Form 2
THE PATENTS ACT, 1970
(39 OF 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(Section 10; rule 13)
1. TITLE OF THE INVENTION: " A WATER BASED PRESSURE SENSITIVE ADHESIVE, ITS USE AND A METHOD OR PROCESS FOR MANUFACTURING THEREOF "
2. APPLICANT:
a. Name: Mr. Shrikant Prabhakar Athavale
b. Nationality: An Indian National
c. Address: B-801, Vastushree Pearl, Near Utsav Hall,
Kinara Hotel Lane, Paud Road, Kothrud, Pune-411038
PREAMBLE TO THE DESCRIPTION:
The following specification particularly describes the invention and the manner in which it is to be performed.

FIELD OF THE INVENTION
This invention relates to methods and processes for manufacturing of pressure sensitive adhesives, and more particularly to a method and apparatus adapted for manufacturing of water based pressure sensitive adhesive.
BACKGROUND OF THE INVENTION
The use of solvent borne adhesives is very common in industrial applications for manufacturing specialty coated self adhesive tapes. The prior art solvent based adhesives are having large spectrum of applications adapted to be applied on different types of materials, such as for example , Film, fabric, foil, paper based self adhesive tapes, for applications such as packaging, assembly. Electrical- heat cold Insulation, surface protection, holding and pasting. The prior art adhesive compositions are made of organic and/or petroleum based solvents, such as Toluene, n- Hexane, and Octane for example. Various methods and apparatuses are seen in the art for manufacturing solvent based, pressure sensitive adhesives.
For example, US Patent Publication No. 2009/0130188 discloses a solution of a pressure sensitive adhesive comprising an acrylic polymer and a solvent or mixture of solvents, said solvent or mixture of solvents comprising of cyclohexane. The solution also comprises an active ingredient partially dispersed in said solution. The solution is adapted to be used for manufacturing of an article which is a medical tape. Also, US Patent No. 7,008,987 provides a pressure sensitive adhesive composition comprising an aqueous dispersion of a polymer obtained by copolymerizing 100 parts by weight of a monomer mixture comprising one or more alkyl (meth) acrylates as the main component and 0.005 to 1 part by weight of at least one silane monomer, and a phenolic tackifier

selected from the group consisting of rosin-phenol resins, terpene-phenol resins, and alkyl-phenol resins, added to the aqueous dispersion. Further, US patent No. 6, 518, 355 provides a natural rubber-based pressure-sensitive adhesive wherein the natural form of the natural rubber is incorporated therein in a solution (or dispersion) and preferably in an organic solvent. Also, US Patent Publication No. 2005/0277729 teaches pressure sensitive adhesive composition containing one or more species of solvents and additives wherein the solvents are organic solvents along with additives known in the art such as for example leveling agents; colloidal silica, alumina sol and like inorganic fine particles; antifoaming agents; antisagging agents; silane coupling agents; titanium white, composite oxide pigments, carbon black, organic pigments, pigment intermediates. In addition, US Patent Publication No. 2006/0172140 discloses pressure sensitive adhesive composition
However, the prior art pressure sensitive adhesives mainly use organic/ petroleum based solvents in the adhesive manufacturing processes that considerably increase the cost of the adhesive products. Also, the use of petroleum based solvents is found to be the core source of industrial hazards such as fire hazard and explosion hazard. Moreover, the organic/ petroleum solvent based pressure sensitive adhesive compositions are not recyclable that considerably increase the VOH and other health related issues to a great extent. Also, the solvent borne pressure sensitive adhesive compositions in the art are capable of being processed on specific types of coating machines and have substantial limitations to be used on multiple coating machines as the viscosity adjustment is a critical issue associated with prior art pressure sensitive coating compositions.

The adhesive tape manufacturers would appreciate an alternative means of solvents in pressure sensitive adhesive manufacturing technology due to constantly increasing prices of petroleum based products. A user would also appreciate a pressure sensitive coating composition whose viscosity or adhesive coatability can be adjusted to suit practically any kind of coating methods on any kind of coating machines such as, Gravure, Floating knife, Roller over roll (Comma Coating), reverse roll coating, and Air knife coating for example.
The existing pressure sensitive adhesive composition technologies in the art specifically require use of heat energy facilitated by highly energy consuming (electricity) machines such as rubber mixing mill and sigma mixer for processing of polymeric or rubber raw materials. A user would appreciate an alternative means of technology over the existing processes which consumes lower heat energy and saves electrical energy being wasted on preprocessing of the raw materials.
Further, the packaging materials made from solvent based plastics and polymer derivatives are largely excreted as domestic or industrial waste creating environmental pollution by forming a huge amount of plastic and polymer waste. Recycle or reuse of these wastes is cumbersome and time consuming. Also, the treatment of waste is a costlier affair as it needs separate processes and apparatuses to be developed for treatment of the plastic/polymer waste and separation/recovery of petroleum based solvents that considerably increase the financial burden on the user.
A method or process is needed that provides a water based pressure sensitive adhesive composition that is adapted to eliminate the use petroleum based solvents. Further, a method or process is needed that facilitates a water based pressure sensitive

adhesive solvent wastage issues to a great extent. Further, a water based pressure sensitive adhesive composition is needed that is capable of consuming lower heat energy and saving electrical energy being wasted on preprocessing of the raw materials. Further, a water based pressure sensitive adhesive composition is needed that is suitable for any kind of coating method and usable on any kind of coating machine.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a method or process for preparation of a water based pressure sensitive adhesive composition. In first step of said method of the present invention, Liquor ammonia is mixed with Natural rubber latex in a first mixing or reaction vessel to form natural rubber latex solution having an alkaline PH. In next step, tackifying resin, emulsifying agent and pure water are mixed and heated in a second mixing or reaction vessel to form a resin emulsion. In next step, the resin emulsion may be selectively preserved and maintained to have an alkaline PH. In next step, Fillers, emulsifying agent and pure water are mixed and heated in a third mixing or reaction vessel to form a filler emulsion. In next step, antioxidants, emulsifying agent and pure water are mixed and heated in a fourth mixing or reaction vessel to form an antioxidant emulsion. In the final step, the natural rubber latex solution, resin emulsion, filler emulsion and antioxidant emulsion are mixed and moderately heated in the fifth reactor to form the water based pressure sensitive adhesive composition of the present invention.
It is another object of the present invention to provide water based pressure sensitive adhesive composition that provides an alternative to solvent based pressure sensitive adhesive compositions existing in the art.

It is further object of the present invention to provide water based pressure sensitive adhesive composition that is selectively and optionally usable in one or more of the following coating methods namely Gravure coating, Floating Knife coating, Roller over Roll or Comma coating, Reverse Roll coating, and Air Knife coating.
It is yet another object of the present invention to provide water based pressure sensitive adhesive composition that is optionally usable on one or more of the following machines namely an air knife coating machine, a spray coating machine and a gravure coating machine.
It is still another object of the present invention to provide water based pressure sensitive adhesive composition that eliminates the need of primer coating on coating machines that saves time, utilities and heat energy being consumed on coating machines.
It is still another object of the present invention to provide water based pressure sensitive adhesive composition that is capable of consuming lower heat energy and saving electrical energy being wasted on preprocessing of the raw materials.
STATEMENT OF THE INVENTION
According to present invention there is provided a method and a process for manufacturing of water based pressure sensitive adhesive composition made from a homogeneous mixture of eco-friendly ingredients comprising of natural rubber latex, resin emulsion, filler emulsion, and antioxidant emulsion.
BRIEF DESCRIPTION OF THE INVENTION

FIG. 1 is a schematic process flow diagram adapted to carry out a method of
manufacturing of water repellent pressure sensitive adhesive in accordance with the
present invention;
FIG. 2 is an enlarged view of a second reaction or mixing vessel in the schematic process
flow diagram of FIG. 1;
FIG. 3 is an enlarged view of the second reaction or mixing vessel in the schematic
process flow diagram of FIG. 1;
FIG. 4 is an enlarged view of a third reaction or mixing vessel in the schematic process
flow diagram of FIG. 1;
FIG. 5 is an enlarged view of a third reaction or mixing vessel in the schematic process
flow diagram of FIG. 1;
FIG. 6 is an enlarged view of a fourth reaction or mixing vessel in the schematic process
flow diagram of FIG. 1; and
FIG. 7 is an enlarged view of a fourth reaction or mixing vessel in the schematic process
flow diagram of FIG. 1.
DETAILED DESCRIPTION OF THE INVENTION
In the context of a preferred embodiment of the present invention, the present invention provides a water based pressure sensitive adhesive composition
In particular, the present invention provides a method and a process for manufacturing of water based pressure sensitive adhesive composition, wherein the process comprising steps of:

a) Mixing Liquor ammonia with Natural rubber latex in a first mixing or reaction vessel to form natural rubber latex solution;
b) Preserving the natural rubber latex solution and maintaining PH on alkaline side;
c) Mixing tackifying resin, emulsifying agent and water in a second mixing or reaction vessel followed by heating to form a resin emulsion;
d) Mixing fillers, emulsifying agent and water in a third mixing or reaction vessel followed by heating to form a filler emulsion;
e) Mixing antioxidants, emulsifying agent and water in a fourth mixing or reaction vessel followed by heating to form an antioxidant emulsion;
f) Mixing the natural rubber latex solution, resin emulsion, filler emulsion and antioxidant emulsion in a fifth mixing or reaction vessel followed by moderate heating to obtain the water based pressure sensitive adhesive composition of the present invention.
The above said method or process for preparation of water based pressure sensitive adhesive composition is set forth in detail in FIG. 1 wherein a schematic process flow diagram illustrating the preferred article and method or process for manufacturing of the water based pressure sensitive adhesive composition is shown.
In this preferred embodiment of the present invention, Natural rubber latex raw material 10 admeasuring about 100 parts per hundred (PPH hereinafter), in its naturally occurring form, is added to a first mixing vessel 12 through an inlet 14. A predefined amount of liquor ammonia 16 admeasuring about 0.125 PPH is added to first mixing vessel 12 at a single instance through an inlet 18. The first mixing vessel 12 includes an agitator 20 coupled with a motor 22 and a gearbox 24 arrangement. The agitator 20 is

adapted to be automatically operated through gear box 24 to thoroughly mix the liquid ammonia 16 with the natural rubber latex material 10 to form natural rubber latex solution 26 of alkaline nature. However, it is understood here that the liquor ammonia 16 may be continuously added to the first mixing vessel 12 in other alternative embodiments of the present invention until the PH of the natural rubber latex solution 26 is of alkaline nature. Natural rubber latex solution 26 is stabilized and stored in the first mixing vessel 12 in this one preferred embodiment. However, it is understood that natural rubber latex solution 26 may be stabilized and stored in a separate storing vessel in other alternative embodiments of the present invention. The first vessel 12 has an outlet valve 28 adapted to withdraw or remove stabilized natural rubber latex solution 26 from the vessel 10. In this one preferred embodiment Natural rubber latex material 10 is utilized, however it is understood that other types of raw materials may be utilized in other alternative embodiments of the adhesive composition of the present invention such as for example Acrylic Adhesive- PSA- WB- Al17, and SBR Latex- PT 800.
In next step, a tackifying resin material 30 admeasuring about 50 PPH of the total reaction mixture is added to a second mixing or reaction vessel 32 through an inlet valve 34, An emulsifying or wetting agent 36 admeasuring about 1.25 PPH of the total reaction mixture is added to second vessel 32 through an inlet valve 38. Water 40 admeasuring about 45 PPH of the total reaction mixture is added to the second vessel 32 through an inlet valve 42. In this one preferred embodiment, the resin material 30 used is FERQUATAC 50100X resin. However, it is understood here that other types of resin materials 30 such as Poly Terpene Resin , Satbilite Ester resin and Ester Gum Resin may be used per intended application of the pressure sensitive adhesive composition of the

present invention. In this one preferred embodiment, the emulsifying agent 36 used is W&D which is aqueous solution of low molecular weight acrylic with pigment affinity group Ammonium salt. However, it is understood that other emulsifying agents 36 such as DC- 2210, WA- 300 (madeCytec) and PSA-336 (made Air products) may be used in other alternative embodiments of the pressure sensitive adhesive composition of the present invention.
The second mixing vessel 32 includes an agitator 44 coupled with a motor 46 and gearbox 48 arrangement. The agitator 44 is adapted to be necessarily rotated at a high speed, to thoroughly mix resin 30, emulsifying agent 36 and water 40. The resultant mixture is continuously stirred for approximately 10- 20 minutes at relatively higher speed and heated in the temperature range of 80 °C -85 °C to form a resin emulsion 50. However, it is understood that the stirring time may vary per batch size in vessel 32 in other alternative embodiments of the present invention. The heating is provided to second vessel 32 through a heating mantle 52 in this one preferred embodiment of the present invention. However, it is understood that second vessel 32 may be provided with a jacket 52 through which heating utilities such as for example, steam and thermic fluid may be circulated to facilitate heating of second vessel 32.
Referring to FIGS. 2 and 3, molecules 54 of resin 30 (see FIG. 1) melt in to a liquid state at the temperature of 80 °C -85 °C of the second mixing vessel 32. In this state, molecules 56 of emulsifying agent 36 (see FIG. I) are capable to wet and get coated over the resin molecules 54 in the mixture that generates means for the molecules of water 40 (see FIG. 1) to wet and penetrate the resin molecules 54 for forming a homogeneous mixture of resin emulsion 50 (see FIG. 1) that is preferably of white color

in this one preferred embodiment of the present invention. However, it is understood here that the color of resin emulsion 50 may change with use of alternative emulsifying agents in other alternative embodiments of pressure sensitive adhesive composition of the present invention.
Referring back again to FIG. 1, resin emulsion 50 is cooled, stabilized and stored in the second mixing vessel 32 in this one preferred embodiment. However, it is understood that resin emulsion 50 may be stabilized and stored in a separate storing vessel in other alternative embodiments of the present invention. It is understood here that the liquor ammonia 16 may be optionally added to the mixing vessel 32 in other alternative embodiments of the present invention until the PH of the resin emulsion 54 is of alkaline nature. The second vessel 32 has an outlet valve 58 adapted to withdraw or remove cooled, stabilized alkaline resin emulsion 50 from the second mixing vessel 32.
In next step, a filler material 60 admeasuring about 22.5 PPH of the total reaction mixture is added to a third mixing or reaction vessel 62 through an inlet valve 64. An emulsifying or wetting agent 66 admeasuring about 1.0 PPH of the total reaction mixture is added to third vessel 62 through an inlet valve 68. Water 70 admeasuring about 25 PPH of the total reaction mixture is added to the third vessel 62 through an inlet valve 72. In this one preferred embodiment, the filler materials 60 are selected from one or more of the following C-black, PPt CaCo3, Antimony Trioxide, Ti02, ZN Oxide, and Barium Sulphate. In this one preferred embodiment, the emulsifying agent 36 used is W&D which is aqueous solution of low molecular weight acrylic with pigment affinity group Ammonium salt. However, it is understood that other emulsifying agents 36 such as DC-2210, WA- 300 (made Cytec) and PSA-336 (made Air products) may be used in other

alternative embodiments of the pressure sensitive adhesive composition of the present invention.
The third mixing vessel 62 includes an agitator 74 coupled with a motor 76 and gearbox 78 arrangement. The agitator 74 is adapted to be necessarily rotated at a high speed, to thoroughly mix fillers 60, emulsifying agent 66 and water 70. The resultant mixture is continuously stirred for approximately 10- 20 minutes at relatively higher speed and heated in the temperature range of 80 °C -85 C to form a filler emulsion SO. However, it is understood that the stirring time may vary per batch size in vessel 62 in other alternative embodiments of the present invention. The heating is provided to third vessel 62 through a heating mantle 82 in this one preferred embodiment of the present invention. However, it is understood that third vessel 62 may be provided with a jacket 82 through which heating utilities such as for example, steam and thermic fluid may be circulated to facilitate heating of third vessel 82.
Referring to FIGS. 4 and 5, molecules 84 of fillers 60 (see FIG. 1) melt in to a liquid state at the temperature of 80 °C -85 °C of the third mixing vessel 62. In this state, molecules 86 of emulsifying agent 66 (see FIG. 1) are capable to wet and get coated over the filler molecules 84 in the mixture that generates means for the molecules of water 70 (see FIG. 1) to wet and penetrate the filler molecules 84 for forming a homogeneous mixture of filler emulsion 80 (see FIG. 1) that is preferably of white color in this one preferred embodiment of the present invention. However, it is understood here that the color of filler emulsion 80 may change with use of alternative emulsifying agents in other alternative embodiments of pressure sensitive adhesive composition of the present invention.

Referring back again to FIG. 1, filler emulsion 80 is cooled, stabilized and stored in the third mixing vessel 62 in this one preferred embodiment. However, it is understood that filler emulsion 80 may be stabilized and stored in a separate storing vessel in other alternative embodiments of the present invention. It is understood here that the liquor ammonia 16 may be optionally added to third mixing vessel 62 in other alternative embodiments of the present invention until the PH of the filler emulsion 80 is of alkaline nature. The third vessel 62 has an outlet valve 88 adapted to withdraw or remove cooled, stabilized alkaline filler emulsion 80 from the third mixing vessel 62.
In next step, an antioxidant material 90 admeasuring about 0.375 PPH of the total reaction mixture is added to a fourth mixing or reaction vessel 92 through an inlet valve 94. An emulsifying or wetting agent 96 admeasuring about 0.25 PPH of the total reaction mixture is added to fourth vessel 92 through an inlet valve 98. Water 100 admeasuring about 5.0 PPH of the total reaction mixture is added to the fourth vessel 92 through an inlet valve 102. In this one preferred embodiment, the antioxidant materials 90 are selected from one or more of the following ZDC and Irganox. In this one preferred embodiment, the emulsifying agent 36 used is W&D which is aqueous solution of low molecular weight acrylic with pigment affinity group Ammonium salt. However, it is understood that other emulsifying agents 36 such as WA- 300 (made Cytec) and PSA-336 (made Air products) may be used in other alternative embodiments of the pressure sensitive adhesive composition of the present invention.
The fourth mixing vessel 92 includes an agitator 104 coupled with a motor 106 and gearbox 108 arrangement. The agitator 104 is adapted to be necessarily rotated at a

high speed, to thoroughly mix antioxidants 90, emulsifying agent 96 and water 100. The resultant mixture is continuously stirred for approximately 10- 20 minutes at relatively higher speed and heated in the temperature range of 80 °C -85 °C to form an antioxidant emulsion 110. However, it is understood that the stirring time may vary per batch size in vessel 92 in other alternative embodiments of the present invention. The heating is provided to fourth vessel 92 through a heating mantle 112 in this one preferred embodiment of the present invention. However, it is understood that fourth vessel 92 may be provided with a jacket 112 through which heating utilities such as for example, steam and thermic fluid may be circulated to facilitate heating of fourth vessel 92.
Referring to FIGS. 6 and 7, molecules 114 of antioxidants 90 (see FIG. 1) melt in to a liquid state at the temperature of 80 °C -85 °C of the fourth mixing vessel 92. In this state, molecules 116 of emulsifying agent 66 (see FIG. 1) are capable to wet and get coated over the antioxidant molecules 114 in the mixture that generates means for the molecules of water 100 (see FIG. 1) to wet and penetrate the antioxidant molecules 114 for forming a homogeneous mixture of antioxidant emulsion 110 (see FIG. 1) that is preferably of white color in this one preferred embodiment of the present invention. However, it is understood here that the color of antioxidant emulsion 90 may change with use of alternative emulsifying agents in other alternative embodiments of pressure sensitive adhesive composition of the present invention.
Referring back again to FIG. 1, filler emulsion 90 is cooled, stabilized and stored in the fourth mixing vessel 92 in this one preferred embodiment. However, it is understood that antioxidant emulsion 90 may be stabilized and stored in a separate storing vessel in other alternative embodiments of the present invention. It is understood

here that the liquor ammonia 16 may be optionally added to fourth mixing vessel 92 in other alternative embodiments of the present invention until the PH of the antioxidant emulsion 90 is of alkaline nature. The fourth vessel 92 has an outlet valve 118 adapted to withdraw or remove cooled, stabilized alkaline antioxidant emulsion 90 from the fourth mixing vessel 92.
In final step, the natural rubber latex solution 26 admeasuring about 100 PPH of the total reaction mixture, withdrawn through outlet valve 28 of first vessel 12, is added to a fifth mixing or reaction vessel 120 through an inlet valve 122. The resin emulsion 50 admeasuring about 50 PPH of the total reaction mixture, withdrawn from outlet valve 58 of second vessel 32, is added to fifth mixing vessel 120 through an inlet valve 124. The filler emulsion 80 admeasuring about 22.5 PPH of the total reaction mixture, withdrawn from outlet valve 86 of third vessel 62, is added to fifth mixing vessel 120 through an inlet valve 126. The antioxidant emulsion 110 admeasuring about 0.375 PPH of the total reaction mixture, withdrawn from outlet valve 118 of fourth vessel 92, along with combined quantity of water in first, second, third and fourth vessels admeasuring about 75 PPH are added to fifth mixing vessel 120 through an inlet valve 128.
The fifth mixing vessel 120 includes an agitator 130 coupled with a motor 132 and gearbox 134. The agitator 130 is adapted to be necessarily rotated at a high speed, to thoroughly mix natural rubber latex solution 26, resin emulsion 50, filler emulsion 80 and antioxidant emulsion 110 at relatively higher speed and heated in the temperature range of about 75 °C -80 °C for a period of about 15-20 minutes to form the water based pressure sensitive adhesive composition 136 of the present invention admeasuring about 401 PPH. The heating is provided to the fifth vessel 120 through a heating mantle 138 in

this one preferred embodiment of the present invention. However, it is understood that fifth vessel 120 may be provided with a jacket 138 through which heating utilities such as for example, steam and thermic fluid may be circulated to facilitate heating of fifth vessel 120.
Referring to FIGS. 1-7, the water based pressure sensitive adhesive composition 136, in operation, is optionally usable on any of the prior art coating machines such as Air Knife coating machine, Spray coating machine and most preferably with a Gravure coating machine that is well known in the art.
Also, pressure sensitive adhesive composition 136 includes the ingredients that are advantageously dissolvable in water that is available at very cheaper cost as compared to alcoholic solvents. Hence, the resultant pressure sensitive adhesive composition is about 30-40 % cost effective as compared to prior art pressure sensitive adhesives and considerable capital investment of the user. The pressure sensitive adhesive 136 is water based that advantageously eliminates the health hazards and fire Hazards that might arise due to use of alcoholic solvents in the prior art pressure sensitive adhesives.
The pressure Sensitive Adhesives composition 136 is advantageously usable in the manufacture of self adhesive tapes that can be used in various applications like, packaging, printing, paint masking, electrical insulation, heat and cold Insulation, health care industries. The pressure Sensitive Adhesives composition 136 includes the formulations and the preparation of all solid ingredients in water emulsion form, using all naturally occurring products or bi-products to be advantageously used in specialty self adhesive coated products as mentioned above.

The pressure sensitive adhesive composition 136 advantageously eliminates the VOH and Plastic wastage issues to a great extent. Pressure sensitive adhesive 136 advantageously eliminates the need of primer coating in coating techniques that considerably saves time and utilities by about 60% from being wasted. Also, the heat energy required for processing of coating over prior art coating machines is considerably lowered due to use of the pressure sensitive adhesive 136 of the present invention.
The pressure sensitive adhesive 136 is very simple , to manufacture and coat on various substrates like paper, Foil, fabrics, and various kinds of plastic films such as Polyester, Bi Axially oriented Pp, PVC, Poly ethylene for example.
The water borne technology for manufacturing of pressure sensitive adhesive 136 is very flexible in terms of the viscosity adjustments wherein the adhesive coatability / viscosity can be adjusted , to suit, practically any kind of coating method, such as for example, Gravure, Floating knife, Roller over roll( Comma Coating ), reverse roll coating, and Air knife coating.
The pressure sensitive adhesive 136 is advantageously used for the manufacture of water Repellent/resistant paper, which will be used in the manufacture of eco friendly paper based products such as for example paper pouches, paper bags, and water resistant packaging Boxes, obeying to recent Green Revolution , generated by Govt, of India ,by avoiding the usage of petroleum based solvents, which in turn would help Indian government to save a lot of Foreign exchange , in terms of Imports of the petroleum products.

The invention is further elaborated with the help of following examples. However, it is understood that these examples should not be construed to limit the scope of the invention.
EXAMPLES EXAMPLE-1:
160 grams of natural rubber latex was mixed with 2 grams of liquor ammonia in a first mixing or reaction vessel 12 to form a natural rubber latex solution 26. The prepared natural rubber latex emulsion 26 was preserved and maintained to have an alkaline PH by using liquor ammonia in the first mixing or reaction vessel 12. In next step, 80 grams of FERQUATAC 50100X resin, emulsifying agents W&D- 4grams, DC-2210- 0.3 grams and 60 grams water, were added to the second mixing vessel 32 and rigorously mixed for 15 minutes along with parallel heating in a second mixing or reaction vessel 32 at temperature 85 C to form a resin emulsion 50. The resin emulsion 50 obtained was of white color that was preserved in the second mixing or reaction vessel 32 and maintained to have an alkaline PH by using 2 grams of liquor ammonia. In next step, filler materials namely 8 grams of Ti02, 8 grams of ZN Oxide, and 20 grams of Barium Sulphate, and 60 grams of water along with emulsifying agents weighing W&D- 4grams, DC-2210- 0.3 grams were added to the third mixing vessel 62 and rigorously mixed for 15 minutes along with parallel heating in a third mixing or reaction vessel 62 at temperature of 85 °C to form a filler emulsion 80. The filler emulsion 80 obtained was of white color that was preserved in the third mixing or reaction vessel 62. In next step, antioxidant materials namely 0.6 gram ZDC, 0.6 gram Irganox-1010 and water 120 grams along with emulsifying agents weighing W&D- 0.2 grams, DC-2210- 0.1 grams were added to the

fourth mixing vessel 92 and rigorously mixed for 15 minutes along with parallel heating in a fourth mixing or reaction vessel 92 at temperature of 85 °C to form a antioxidant emulsion 110. The antioxidant emulsion 110 obtained was of white color that was preserved in the fourth mixing or reaction vessel 92. In the final step, natural rubber latex emulsion 26, resin emulsion 50, filler emulsion 80, antioxidant emulsion 110 are mixed in the fifth mixing or reaction vessel 120 for 15 minutes along with parallel heating in a fifth mixing or reaction vessel 120 at temperature of 75 °C to form 402 grams of the water based pressure sensitive adhesive composition 136 of the present invention.
EXAMPLE-2: Pressure sensitive adhesive composition manufactured for Friction tape:
100 PPH of natural rubber latex, 100 PPH SBR latex- PT 800 and 50 PPH Acrylic Adhesive- PSA- WB- A 117 were mixed with 0.15 PPH of liquor ammonia in a first mixing or reaction vessel 12 to form a natural rubber latex solution 26. The prepared natural rubber latex emulsion 26 was preserved and maintained to have an alkaline PH by using liquor ammonia in the first mixing or reaction vessel 12. In next step, 37.50 PPH of Ester gum (ultrarez CEG) resin and 37.50 PPH of Wing tack extra, along with emulsifying agents W&D, and DC-2210, were added to the second mixing vessel 32 and rigorously mixed for 15 minutes along with parallel heating in a second mixing or reaction vessel 32 at temperature 85 C to form a resin emulsion 50. The resin emulsion 50 obtained was of white color that was preserved in the second mixing or reaction vessel 32 and maintained to have an alkaline P by using liquor ammonia, if needed. In next step, filler materials namely 1 PPH of C-black, 1 PPH of Zn oxide and 5 PPH of PPt Caco3 along with water and emulsifying agents weighing W&D and DC-2210 to the

third mixing vessel 62 and rigorously mixed for 15 minutes along with parallel heating in a third mixing or reaction vessel 62 at temperature of 85 °C to form a filler emulsion 80. The filler emulsion 80 obtained was of white color that was preserved in the third mixing or reaction vessel 62. In next step, antioxidant materials namely 0.55 PPH ZDC, 0.55 PPH Irganox-1010 along with water and emulsifying agents W&D and DC-2210 were added to the fourth mixing vessel 92 and rigorously mixed for 15 minutes along with parallel heating in a fourth mixing or reaction vessel 92 at temperature of 85 °C to form a antioxidant emulsion 110. The antioxidant emulsion 110 obtained was of white color that was preserved in the fourth mixing or reaction vessel 92. In the final step, natural rubber latex emulsion 26, resin emulsion 50, filler emulsion 80, antioxidant emulsion 110 are mixed in the fifth mixing or reaction vessel 120. In above process, total amount of water utilized was 38.10 PPH and total amount of emulsifying agents utilized was 0.57 PPH of W&D and 0.57 PPH of DC-2210. The reaction mixture was stirred for 15 minutes along with parallel heating in a fifth mixing or reaction vessel 120 at temperature of 75 °C to form 372.50 PPH of the water based pressure sensitive adhesive composition 136 adapted to be used for Friction Tape.
EXAMPLE-3: Pressure sensitive adhesive composition manufactured for FLRT cloth tape:
100 PPH of natural rubber latex, 100 PPH SBR latex- PT 800 and 50 PPH Acrylic Adhesive- PSA- WB- A 117 were mixed with 0.11 PPH of liquor ammonia in a first mixing or reaction vessel 12 to form a natural rubber latex solution 26. The prepared natural rubber latex emulsion 26 was preserved and maintained to have an alkaline PH by

using liquor ammonia in the first mixing or reaction vessel 12. In next step, 13.75 PPH of Ester gum (ultrarez CEG) resin and 13.75 PPH of Wing Tack along with emulsifying agents W&D, and DC-2210, were added to the second mixing vessel 32 and rigorously mixed for 15 minutes along with parallel heating in a second mixing or reaction vessel 32 at temperature 85 °C to form a resin emulsion 50. The resin emulsion 50 obtained was of white color that was preserved in the second mixing or reaction vessel 32 and maintained to have an alkaline PH by using liquor ammonia, if needed. In next step, filler materials namely 2 PPH of C-black, 2 PPH of Zn-oxide and 5 PPH of PPt Caco3 and 5.50 PPH of Antimony Trioxide along with water and emulsifying agents weighing W&D and DC-2210 to the third mixing vessel 62 and rigorously mixed for 15 minutes along with parallel heating in a third mixing or reaction vessel 62 at temperature of 85 °C to form a filler emulsion 80. The filler emulsion 80 obtained was of white color that was preserved in the third mixing or reaction vessel 62. In next step, antioxidant materials namely 0.55 PPH ZDC, 0.55 PPH Irganox-1010 along with water and emulsifying agents W&D and DC-2210 were added to the fourth mixing vessel 92 and rigorously mixed for 15 minutes along with parallel heating in a fourth mixing or reaction vessel 92 at temperature of 85 °C to form a antioxidant emulsion 110. The antioxidant emulsion 110 obtained was of white color that was preserved in the fourth mixing or reaction vessel 92, Additionally, Chlorinated rubber admeasuring 25 PPH and Tolune admeasuring 5 PPH were loaded with filler emulsion 80 especially to enhance fire retardant properties of the adhesive composition of the present invention. Also, CPW admeasuring about 40 PPH and TBBA admeasuring about 45 PPH were also added. In the final step, natural rubber latex emulsion 26, resin emulsion 50, filler emulsion 80, antioxidant emulsion 110 are mixed

in the fifth mixing or reaction vessel 120. In above process, total amount of water utilized was 26.60 PPH and total amount of emulsifying agents utilized was 0.40 PPH of W&D and 0.40 PPH of DC-2210. The reaction mixture was stirred for 15 minutes along with parallel heating in a fifth mixing or reaction vessel 120 at temperature of 75 °C to form 435.60 PPH of the water based pressure sensitive adhesive composition 136 adapted to be used for FLRT cloth tape.
EXAMPLE-4: Pressure sensitive adhesive composition manufactured for WP cloth tape:
100 PPH of natural rubber latex, 100 PPH of SBR latex- PT 800 and 50 PPH of Acrylic Adhesive- PSA- WB- A 117 were mixed with 0.11 PPH of liquor ammonia in a first mixing or reaction vessel 12 to form a natural rubber latex solution 26. The prepared natural rubber latex emulsion 26 was preserved and maintained to have an alkaline PH by using liquor ammonia in the first mixing or reaction vessel 12. In next step, 13.75 PPH of Ester gum (ultrarez CEG) resin and 13.75 PPH of Wing tack, along with emulsifying agents W&D, and DC-2210, were added to the second mixing vessel 32 and rigorously mixed for 15 minutes along with parallel heating in a second mixing or reaction vessel 32 at temperature 85 C to form a resin emulsion 50. The resin emulsion 50 obtained was of white color that was preserved in the second mixing or reaction vessel 32 and maintained to have an alkaline P by using liquor ammonia, if needed. In next step, filler materials namely 5.50 PPH Ti02, 5.50 PPH Zn oxide and 5.50 PPH of Barium Sulphate along with water and emulsifying agents weighing W&D and DC-2210 to the third mixing vessel 62 and rigorously mixed for 15 minutes along with parallel heating in a third mixing or reaction vessel 62 at temperature of 85 °C to form a filler emulsion 80. The filler

emulsion 80 obtained was of white color that was preserved in the third mixing or reaction vessel 62. In next step, antioxidant materials namely 0.55 PPH ZDC, 0.55 PPH Irganox-1010 along with water and emulsifying agents W&D and DC2210 were added to the fourth mixing vessel 92 and rigorously mixed for 15 minutes along with parallel heating in a fourth mixing or reaction vessel 92 at temperature of 85 °C to form a antioxidant emulsion 110. The antioxidant emulsion 110 obtained was of white color that was preserved in the fourth mixing or reaction vessel 92. In the final step, natural rubber latex emulsion 26, resin emulsion 50, filler emulsion 80, antioxidant emulsion 110 are mixed in the fifth mixing or reaction vessel 120. In above process, total amount of water utilized was 28.60 PPH and total amount of emulsifying agents utilized was 0.43 PPH of W&D and 0.43 PPH of DC-2210: The reaction mixture was stirred for 15 minutes along with parallel heating in a fifth mixing or reaction vessel 120 at temperature of 75 °C to form 324.67 PPH of the water based pressure sensitive adhesive composition adapted to be used for WP cloth tape.
EXAMPLE-5: Pressure sensitive adhesive composition manufactured for DS cloth tape:
100 PPH of natural rubber latex, 100 PPH SBR latex- PT 800 and 50 PPH Acrylic Adhesive-PSA-WB-A 117 were mixed with 0.30 PPH of liquor ammonia in a first mixing or reaction vessel 12 to form a natural rubber latex solution 26. The prepared natural rubber latex emulsion 26 was preserved and maintained to have an alkaline PH by using liquor ammonia in the first mixing or reaction vessel 12. In next step, 25.00 PPH of Ester gum (ultrarez CEG) resin 12.50 PPH of Wing tack extra and 12.50 PPH of Escorez 1401, along with emulsifying agents W&D, and DC-2210, were added to the

second mixing vessel 32 and rigorously mixed for 15 minutes along with parallel heating in a second mixing or reaction vessel 32 at temperature 85 C to form a resin emulsion 50. The resin emulsion 50 obtained was of white color that was preserved in the second mixing or reaction vessel 32 and maintained to have an alkaline PH by using liquor ammonia. In next step, filler materials namely 50 PPH Ti02, and 10 PPH Zn oxide along with water and emulsifying agents weighing W&D and DC-2210 to the third mixing vessel 62 and rigorously mixed for 15 minutes along with parallel heating in a third mixing or reaction vessel 62 at temperature of 85 C to form a filler emulsion 80. The filler emulsion 80 obtained was of white color that was preserved in the third mixing or reaction vessel 62. In next step, antioxidant materials namely 0.55 PPH ZDC, 0.55 PPH Irganox-1010 along with water and emulsifying agents W&D and DC-2210 were added to the fourth mixing vessel 92 and rigorously mixed for 15 minutes along with parallel heating in a fourth mixing or reaction vessel 92 at temperature of 85 °C to form a antioxidant emulsion 110. The antioxidant emulsion 110 obtained was of white color that was preserved in the fourth mixing or reaction vessel 92. In the final step, natural rubber latex emulsion 26, resin emulsion 50, filler emulsion 80, antioxidant emulsion 110 are mixed in the fifth mixing or reaction vessel 120. In above process, total amount of water utilized was 76.10 PPH and total amount of emulsifying agents utilized was 1.14 PPH of W&D and 1.14 PPH of DC-2210. The reaction mixture was stirred for 15 minutes along with parallel heating in a fifth mixing or reaction vessel 120 at temperature of 75 °C to form 439.79 of the water based pressure sensitive adhesive composition 136 adapted to be used for DS cloth Tape.

EXAMPLE- 6: Testing of the pressure sensitive adhesive composition of the present invention used in WP tape:
The pressure sensitive adhesive composition is applied on WP tape amounting to have thickness of about 115 Micron to form a tape of 110 GSM which were then tested with different tests such as Peel adhesion test, Shear test, Tacking test and BDV test. Accordingly, in the context of the present invention, the test results were then tabulated to ascertain pressure sensitive costing ability of the pressure sensitive adhesive composition as described in table 1 herein:
TABLE 1: A COMPARASION OF DIFFERENT TEST RESULTS FOR WP TAPE APPLIED WITH PRESSURE SENSITIVE ADHESIVE COMPOSITION OF THE PRESENT INVENTION

Main substrate- WP TAPE (110 GSM)
Coating with Pressure sensitive adhesive composition -115 Micron
Test Parameters Test Values
Peel adhesion gm/ 25 mm 700
Shear test in hrs 12
Tacking value 4
BDV in volts Nil
Accordingly, the significant pressure sensitive adhesive coating ability of the pressure sensitive adhesive composition with regard to WP tape was confirmed.

EXAMPLE- 7: Testing of the pressure sensitive adhesive composition of the present invention used in Friction tape;
The pressure sensitive adhesive composition is applied on Friction tape amounting to have thickness of about 115 Micron to form a tape of 110 GSM which were then tested with different tests such as Peel adhesion test, Shear test, Tacking test and BDV test. Accordingly, in the context of the present invention, the test results were then tabulated to ascertain pressure sensitive coating ability of the pressure sensitive adhesive composition as described in table 2 herein:
TABLE 2: A COMPARAS10N OF DIFFERENT TEST RESULTS FOR FRICTION TAPE APPLIED WITH PRESSURE SENSITIVE ADHESIVE COMPOSITION OF THE PRESENT
INVENTION

Main substrate- FRICTION TAPE (110 GSM)
Coating with Pressure sensitive adhesive composition - 115 Micron
Test Parameters Test Values
Peel adhesion gm/ 25 mm 550
Shear test in hrs 8
Tacking value 4
BDV in volts 1200
Accordingly, the significant pressure sensitive adhesive coating ability of the pressure sensitive adhesive composition with regard to Friction tape was confirmed.

EXAMPLE- 8: Testing of the pressure sensitive adhesive composition of the present invention used in Specialty tape:
The pressure sensitive adhesive composition is applied on Specialty tape amounting to have thickness of about 115 Micron to form a tape of 110 GSM which were then tested with different tests such as Peel adhesion test, Shear test, Tacking test and BDV test. Accordingly, in the context of the present invention, the test results were then tabulated to ascertain pressure sensitive coating ability of the pressure sensitive adhesive composition as described in table 3 herein:
TABLE 3: A COMPARAS10N OF DIFFERENT TEST RESULTS FOR SPECIALITY TAPE APPLIED WITH PRESSURE SENSITIVE ADHESIVE COMPOSITION OF THE PRESENT INVENTION

Main substrate- SPECIALITY TAPE (110 GSM)
Coating with Pressure sensitive adhesive composition - 115 Micron
Test Parameters Test Values
Peel adhesion gm/ 25 mm 1200
Shear test in hrs More than 24
Tacking value 3
BDV in volts Nil
Accordingly, the significant pressure sensitive adhesive coating ability of the 15 pressure sensitive adhesive composition with regard to Speciality tape was confirmed.

EXAMPLE- 9: Testing of the pressure sensitive adhesive composition of the present invention used in Fire Retardant Low Tension (FRLT) tape:
The pressure sensitive adhesive composition is applied on FRLT tape amounting to have thickness of about 115 Micron to form a tape of 110 GSM which were then tested with different tests such as Peel adhesion test, Shear test, Tacking test and BDV test. Accordingly, in the context of the present invention, the test results were then tabulated to ascertain pressure sensitive coating ability of the pressure sensitive adhesive composition as described in table 4 herein:
TABLE 4: A COMPARASION OF DIFFERENT TEST RESULTS FOR FRLT TAPE APPLIED WITH PRESSURE SENSITIVE ADHESIVE COMPOSITION OF THE PRESENT INVENTION

Main substrate- FRLT TAPE (110 GSM)
Coating with Pressure sensitive adhesive composition - 115 Micron
Test Parameters Test Values
Peel adhesion gm/ 25 mm 500
Shear test in hrs 10
Tacking value 2
BDV in volts 1500
Accordingly, the significant pressure sensitive adhesive coating ability of the pressure sensitive adhesive composition with regard to FLRT tape was confirmed.

The present invention has been described in an illustrative manner, and it is to be understood that the terminology used is intended to be in the nature of description rather than of limitation.
It is not intended to be exhaustive or to limit the invention to the precise form disclosed. Many modifications and verifications are possible in light of the above teaching. It is intended that the scope of the invention be limited not by this detailed description, but rather by the claims appended hereto. It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention described herein.

I CLAIM:
1. A method or process for preparation of water based pressure sensitive adhesive composition, wherein the process comprising steps of:
a) Mixing Liquor ammonia admeasuring about 0.125 parts and Natural rubber latex admeasuring about 100 parts in a first mixing or reaction vessel to form natural rubber latex solution;
b) Preserving the natural rubber latex solution and maintaining PH on alkaline side;
c) Mixing tackifying resin admeasuring about 50 parts, emulsifying agent admeasuring about 1.25 parts and water admeasuring about 45 parts in a second mixing or reaction vessel followed by heating to form a resin emulsion;
d) Mixing filler material admeasuring about 22.5 parts, emulsifying agent admeasuring about 1 parts and water admeasuring about 25 parts in a third mixing or reaction vessel followed by heating to form a filler emulsion;
e) Mixing antioxidants admeasuring about 0.375 parts, emulsifying agent admeasuring about 0.25 parts and water admeasuring about 5 parts in a fourth mixing or reaction vessel followed by heating to form an antioxidant emulsion;
f) Mixing the rubber latex solution admeasuring about 100 parts, resin emulsion admeasuring about 50 parts, filler emulsion admeasuring about 22.5 parts and antioxidant emulsion admeasuring about 0.375 parts of in a fifth mixing or reaction vessel followed by moderate heating to obtain about 401 parts of the water based pressure sensitive adhesive composition of the present invention.

2. The method or process for preparation as claimed in claim 1, wherein the tackifying resin is selected from one or more of the following: FERQUATAC-50100X, Acrylic Adhesive- PSA- WB- All 7, Styrene Butadiene Rubber Latex- PT 800, Poly Terpene Resin, Satbilite Ester resin, and Ester Gum Resin,.
3. The method or process for preparation as claimed in claim 1, wherein the filler material is selected from one or more of the following: Carbon black, PPt- Calcium Carbonate, Antimony Trioxide, Titanium Oxide, Zinc Oxide, and Barium Sulphate.
4. The method or process for preparation as claimed in claim 1, wherein the antioxidant is selected from one or more of the following: ZDC and Irganox.
5. The method or process for preparation as claimed in claim I, wherein emulsifying agent is selected from one or more of the following: WA-300, PSA-336, DC- 2210 and W&D.
6. The method or process for preparation as claimed in claim 1, wherein the reaction mixture in the second, third and fourth mixing or reaction vessels is adapted to be heated at a temperature range of about 80 °C to 85 °C and a time period of about 15 minutes to 20 minutes.
7. The method or process for preparation as claimed in claim 7, wherein the heating in the second, third and fourth mixing or reaction vessels respectively facilitate the resin,

filler and antioxidant molecules to melt in to liquid state with an increased viscosity to facilitate the molecules of the emulsifying agent to be coated over the resin, filler and antioxidant molecules.
8. The method or process for preparation as claimed in claim 1, wherein the reaction
mixture in the fifth mixing or reaction vessel is adapted to be heated at a temperature
range of about 75 °C and for a time period of about 15 minutes to 20 minutes.
9. A water based pressure sensitive adhesive composition, the composition comprises Natural rubber latex, Liquor ammonia. Tackifying resin, Fillers, Antioxidants, emulsifying agents and water in the following weight proportions about 100 parts natural rubber latex , about 0.125 parts liquor ammonia, about 50 parts tackifying resin, about 22.5 parts Fillers, about 0.375 parts Antioxidants, about 2.5 parts emulsifying agent and about 75 parts water, the adhesive composition adapted to made in exclusive aqueous formulation of water solvent wherein the natural rubber latex and the resin are emulsified with specific proportions of emulsifying agents and fillers followed by mixing for specific time and heating at specific temperature, the pressure sensitive adhesive composition adapted to replace solvent based adhesive compositions.
10. The pressure sensitive adhesive composition as claimed in claim 9, wherein the pressure sensitive adhesive composition is prepared in accordance with the method as claimed in claim 1.

11. The pressure sensitive adhesive composition as claimed in claim 9, wherein the pressure sensitive adhesive composition adapted to eliminate the need of primer coatings on the coating machines that saves time, utilities and heat energy being consumed on the coating machines.
12. The pressure sensitive adhesive composition as claimed in claim 9, wherein the pressure sensitive adhesive composition adapted to eliminate the use of alcoholic solvents.
13. Jhe pressure sensitive adhesive composition as claimed in claim 9, wherein the pressure sensitive adhesive composition adapted to be used in manufacturing of one or more of the following: Friction Tape, Fire Retardant Low Tension Tape, Water Proof Cloth Tape and Double Sided Cloth Tape.