DESC:TECHNICAL FIELD

The present disclosure relates to a system and method of preparing a water soluble films and more particularly relates to a system and method of preparing cold water soluble film for delivering heat sensitive active ingredients. The cold water soluble film thus formed may find application in pharmaceuticals, packaging, formulation and food product strips.

BACKGROUND

Water-soluble films are well known in the art. Water-soluble films have many applications, including non-edible forms, such as pharmaceutical films, packaging materials, and edible forms such as formulation, edible films and food product strips, wherein the film itself is or makes up an edible article. Edible films are known for uses such as delivery of therapeutic agents,breath freshening agents, and flavors and in pharmaceutical industries in the form of delivery system (API’s) for medicines and formulaions.In food packaging applications, food contents packed in a water-soluble film that could dissolve in either hot or cold water and maintain transparency.The conventional system for manufacturing a water soluble film includes a producing unit which produces a water soluble film roll, a separation unit which divides the water soluble film into a plurality of pieces, and a packing unit which packs and seals the water soluble film edible film pieces using wrapping paper to form water soluble packets or pouches. The producing unit, the separation unit and the packing unit are separately provided.

US2014011304 disclose a method and apparatus for manufacturing an edible film. US 2014011304 provides an apparatus for manufacturing an edible film, including: a water-soluble solution supply unit supplying a water-soluble solution for forming the edible film; a first coating conveyer comprising a support for application and transfer of the water soluble solution; a lower wrapping paper supply unit supplying a lower wrapping paper for packing the edible film onto an upper surface of the first coating conveyer; a multi-intermittent water soluble-composition-solution-applying unit applying the water-soluble solution supplied from the water-soluble solution supply unit onto an upper surface of the lower wrapping paper in such a way that a plurality of pieces of edible films are separately formed by repeatedly conducting application of the water soluble solution and interruption of the application. The apparatus may further include a semi-drying unit disposed in rear of the first coating conveyer to semi-dry the water-soluble edible film formed by the multi-intermittent water soluble composition solution applying unit.

The above apparatus for manufacturing water soluble film, known in the art have several limitation, that would include taking up a lot of space for the setup of the apparatus and method of preparing the water soluble film, wherein the substrate/liner on which the water soluble film is formed has to go through various heads or stages to finally form the end product that is the water soluble film. Further the above prior art, has limitation such as excess use of resources and energy, thereby increasing the overall production or preparation time of the water soluble film.

Therefore in order to overcome the above limitation, there is a need to provide an improved system and method of preparing cold water soluble film for use in pharmaceuticals, packaging, formulation and food product strips, wherein the above disadvantages or limitation, may be addressed to the maximum.

OBJECT OF THE INVENTION

The primary object of the present invention is to provide asystem for preparing cold water soluble film for use in pharmaceutical films, packaging, edible films, formulation and food product strips.

Another object of the present invention is to provide a system for cold drying the water soluble film by using dehumidifier or Air dryer.

Yet another object of the present invention is to provide asystem for preparing cold water soluble film for delivering heat sensitive active ingredients.

Yet another object of the present invention is to provide a system that is compact in nature and requires less space for installation.

Yet another object of the present invention is to provide a system that reduces the production time simultaneously increasing the production of water soluble film.
Yet another object of the present invention is to provide a system that is easy to assemble and consumes less energy.

Yet another object of the present invention is to provide a method of preparing cold water soluble film for delivering heat sensitive active ingredients.

Yet another object of the present invention is to provide a method of preparing cold water soluble film, wherein the said water soluble film carrier may be used in pharmaceutical films, packaging, edible films, formulation and food product strips.

Yet another object of the present invention is to provide a method of preparing a cold water soluble film, wherein production of water soluble film is increased with reduction in production time.

Yet another object of the present invention is to provide cold water soluble film for diverse applications, in which a variety of substances such as detergents, enzymes, softeners, perfumes; agrochemicals like pesticides, fungicides, herbicides, weedicides, insecticides; agro nutrients like urea, fertilizers; dyes, pigments, hazardous chemicals, fluff, pulp, absorbents used in diapers; active agents for cleaning laundry, dishes, floorings, walls, furniture and the like are embedded singly or in combination for delivering them in precise and desired dosages.

SUMMARY

In one aspect of the present disclosure, a system for preparing a cold water soluble film on a liner is disclosed. The system comprises a coating unit and a drying unit. The coating unit comprises a fluid delivery unit and a die for casting/coating a batch solution on the liner. The drying unit comprises a plurality of air handling units such as dehumidifier/air dryer, a plurality of first type guide rollers and a plurality of second type guide rollers, wherein the plurality of first type guide rollers and the plurality of second type guide rollers are arranged in an alternate order. The batch solution is coated on the liner with edges being uncoated, using die-casting and the coated liner with the uncoated edges is transferred to the drying unit so that the coated liner is passed on the plurality of first type guide rollers and uncoated edges of the liner is passed on the plurality of second type guide rollers.

In another aspect of the present disclosure, a method of preparing a cold water soluble film on a liner is disclosed. The method comprises the steps of: providing the liner and a batch solution based on a composition of said water soluble film, feeding the liner and the batch solution to a coating unit, coating the batch solution on the liner with edges being uncoated by using die-casting, transferring the coated liner with the uncoated edges to a drying unit, wherein the drying unit comprises a plurality of air handling units, a plurality of first type guide rollers and a plurality of second type guide rollers. The method further comprises passing the coated liner on the plurality of first type guide rollers and the uncoated edges on the plurality of second type guide rollers and drying the coated liner using the plurality of air handling units while passing the coated liner on the plurality of first type guide rollers.

BRIEF DESCRIPTION OF THE DRAWINGS

Having thus described the disclosure in general terms, reference will now be made to the accompanying figures, wherein:

Fig. 1: illustrated a system for preparing a cold water soluble film on a liner in accordance with the present disclosure.

Fig.2: illustrated schematic of a Type-1 and type-2 roller in accordance with the present disclosure.

Fig.3: illustrated the liner before and after the coating process in accordance with the present disclosure.
It should be noted that the accompanying figures are intended to present illustrations of exemplary embodiments of the present disclosure. These figures are not intended to limit the scope of the present disclosure. It should also be noted that accompanying figures are not necessarily drawn to scale.

REFERENCE NUMERALS:

System for preparing a water soluble film (101)
Coating unit (102)
Drying unit (202)
Liner (103)
First type guide rolls (104)
Second type guide rolls (105)
Air dryer/humidifier/Air handling units (106)
Water soluble film formed as product (107)
Guide roll (108)
Roller shaft (109)
Covering of type one guide rolls (110)
Rim or edges of type two guide rolls (111)
Liner after coating (112)
Uncoated edges (113)

DETAIED DESCRIPTION

The following detailed description illustrates the invention by way of example and not by way of limitation. The description enables one skilled in the art to make and use the present disclosure, and describes several embodiments, adaptations, variations, alternatives, and uses of the present disclosure, including what is presently believed to be the best mode of carrying out the present disclosure.

Reference will now be made in detail to selected embodiments of the present disclosure in conjunction with accompanying figures. The embodiments described herein are not intended to limit the scope of the disclosure, and the present disclosure should not be constructed as limited to the embodiments described. This disclosure may be embodied in different forms without departing from the scope and spirit of the disclosure. It should be understood that the accompanying figures are intended and provided to illustrate embodiments of the disclosure described below and are not necessarily drawn to scale. In the drawings, like numbers refer to like elements throughout, and thicknesses and dimensions of some components may be exaggerated for providing better clarity and ease of understanding.

It should be noted that the terms "first", "second", and the like, herein do not denote any order, ranking, quantity, or importance, but rather are used to distinguish one element from another. Further, the terms "a" and "an" herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item.

The present disclosure relates to a system and method of preparing a cold water soluble film for delivering heat sensitive active ingredients or heat sensitive active pharmaceutical ingredients (APIs). The cold water soluble film thus formed may find application in pharmaceutical film such as mouth dissolving strips, mouth melting strips, oral disintegrating films (ODS), , packaging, edible films, formulation and food product strips.

Water soluble films: are films that are soluble in water. Water soluble film may be comprised into 2 main categories (i) Cold water soluble film, that readily dissolves in cold water and (ii) Hot water soluble film, that dissolves in warm water. These films are used for specific unit dose packaging of detergents, agrochemicals, water treatment chemicals, food ingredients, pharmaceutical drugs, and dyes.

Liner: are the base materials or substrate on which non water soluble film or water soluble films of various compositions may be coated. The liner either single or in combination is selected from materials such as paper, film, foil or fabric; preferably of film, more preferably of polyester film such as PET. The thickness of the film liners ranges from 2 microns to 500 microns, preferably from 10 microns to 300 microns, more preferably from 12 microns to 250 microns.

A system and method of preparing a cold water soluble film on a liner are disclosed. The water soluble film is prepared without using heat in the continuous process on the liner. The preparation method can be used for preparing dairy product strips, chocolate strips, pharma strips or other medicated strips, etc which require low temperature heating.

Batches of water soluble film as disclosed in the present invention is initially prepared, wherein method of preparing batches of water soluble film, comprises the steps of (a) preparing a solution comprising a film former, a water soluble plasticizer, a pharmaceutically active agent, and a solvent, wherein the film former is a polyacrylic acid, cellulose derivative, polyethylene oxide, polyvinyl alcohol, or any combination of any of the foregoing. Suitable cellulose derivatives include, but are not limited to, hydroxyethyl cellulose, carboxymethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, and any combination of any of the foregoing. The film former is preferably polyvinyl alcohol.Suitable plasticizers include, but are not limited to, polyhydroxy compounds, such as propylene glycol, polyethylene glycol, glycerin, and any combination of any of the foregoing.Suitable pharmaceutically active agents include, but are not limited to, imidazole antifungal agents, such as imidazole antifungal agents, nonoxynol 9.The solvent may be water, ethanol, glycerin, ethylene glycol, amides, amines, or any combination of any of the foregoing. The solvent is preferably water or a mixture of water and ethanol.

Accordingly, the composition of water soluble film comprises about 20 to 90% by weight of film forming agent, about 8 to 20% by weight of plasticizer, about 1 to 8% of fillers. Total solid content of the water soluble film batches is up to 50% of the solution.

The batch solution of water soluble film coated over the liner has a thickness ranging from 2 microns to 500 microns, preferably from 10 microns to 300 microns, more preferably from 12 microns to 250 microns.

In one aspect of the present disclosure, a system for preparing a cold water soluble film on a liner is disclosed. The system comprises a coating unit and a drying unit. (i) The coating unit comprises a fluid delivery unit and a die for casting/coating a batch solution of WSF on the liner. (ii)The drying unit comprises a plurality of air handling units, a plurality of first type guide rollers and a plurality of second type guide rollers, wherein the plurality of first type guide rollers and the plurality of second type guide rollers are arranged in an alternate order. The plurality of air handing units are positioned centrally such that the plurality of first type guide rollers and the plurality of second type guide rollers arranged in alternate order surrounds the plurality of air handing units. The batch solution of WSF is coated on the liner with edges being uncoated, using die-casting and the coated liner with the uncoated edges is transferred to the drying unit so that the coated liner is passed on the plurality of first type guide rollers and uncoated edges of the liner is passed on the plurality of second type guide rollers.

Referring to figure 1, there is illustrated a system(101) for preparing a Cold water soluble films (107) on a liner (103) in accordance with an exemplary embodiment of the present disclosure. The system (101) comprises a coating unit (102) and a drying unit (202). The coating unit (102) comprises a fluid delivery unit and a die for casting/coating a batch solution of water soluble film (WSF) on the liner (103). The fluid delivery unit supplies a batch solution of water soluble film that is casted on the liner (103) via die-casting in a measured form to the coating area of the liner to be coated. The batch solution of WSF is prepared based on a composition of said water soluble film as disclosed in the present invention. The batch solution of WSF is coated/casted on the liner (103) with edges being uncoated, using die-casting. The liner may be a hydrophobic, thermally active detachable liner. The Cold water soluble films may comprises one or more layers of water soluble material. The liner (103) is made of a polyester film (PET).

The drying unit (202) comprises a plurality of air handling unit (106), such as a plurality of dehumidifiers/air dryer /for fresh air/ dry air and cold air as per the requirement for drying. The plurality of air handling units (106) may comprise a plurality of air dryers or dehumidifiers (106) as shown in figure 1.The drying unit (202) further comprises a plurality of first type guide rollers (104) and a plurality of second type guide rollers (105). The first type guide rollers are denoted as type-1 rollers (104) and second type guide rollers are denoted as type-2 rollers (105) as shown in figure 1. The plurality of first type guide rollers (104) and the plurality of second type guide rollers (105) are arranged in an alternate order. The plurality of air handing units (106) are positioned centrally such that the plurality of first type guide rollers (104) and the plurality of second type guide rollers (105) are arranged in alternate order surrounding the plurality of air handing units (106).Type-1 rollers (104) are normal commercially available guide rollers. Type-2 rollers (105) are specially designed guide rollers for the usage in the present disclosure. Type-1 and type-2 guide rollers are arranged in vertical direction, and in multiple series. Further, Type-1 and Type-2 guide rollers have two different shapes. The Type-1 and Type-2 guide roller may be made of ceramic, aluminum, stainless steel or any other material as may be required and compatible. During setting up a system for pharmaceutical use, the entire set up of the system may be made of stainless steel including Type-1 and Type-2 guide roller as per the requirement.

Conventional system of preparing water soluble films comprises of system that are arranged in a liner manner, such that once the water soluble film is coated over the liner, the coated film with the liner passes over the system in a liner manner for further process such as drying, etc,

The present invention provide a problem solving approach wherein a system for preparing Cold water soluble films for delivering heat sensitive active ingredients is disclosed in the present invention, wherein the said system for preparing Cold water soluble films is compact in nature, since the system comprises of 2 units; (i) the coating unit and (ii) the drying unit, the drying unit is designed such that it comprises plurality of air dryers (106), a plurality of first type guide rollers (104) and a plurality of second type guide rollers (105). The plurality of first type guide rollers (104) and the plurality of second type guide rollers (105) are arranged in an alternate order. Type-1 and type-2 rollers guide rollers are arranged in vertical direction and in multiple series and requires less space for installation. The coated liner (112) with the uncoated edges (113) passes from the coating unit (102) and is then transferred to the drying unit (202). In the drying unit (202), the coated liner (112) is passed on the plurality of first type guide rollers (104) and uncoated edges (113) of the liner (103) are passed on the plurality of second type guide rollers (105), so that to avoid the sticking/touching of coated liner (112) on the second type guide rollers (105), wherein drying of the water soluble film (107) is done by the centrally positioned air dryer (106). Once the process of coating the liner with water soluble film is completed, the guide roll / nip roll (108guides the water soluble film (107) formed, to detach it from the liner (103).

Further, the system for preparing water soluble film as disclosed by the present invention, results in increase in production of water soluble film that simultaneously reduces the production time to prepare the water soluble film. The present invention discloses a system for preparing a water soluble film that is compact in nature and requires less space for installation. The present invention discloses asystem for preparing water soluble film that is easy to assemble and consumes less energy.

Referring to figure 2, there is illustrated schematic of a Type-1 and type-2 roller in accordance with the present disclosure. The first type guide rollers are denoted as type-1 rollers (104) and second type guide rollers are denoted as type-2 rollers (105) as shown in figure 1 and 2. The plurality of first type guide rollers (104) and the plurality of second type guide rollers (105) are arranged in an alternate order. Further, Type-1 and type-2 rollers guide rollers (104,105) have two different shapes. Wherein the Type-1 rollers (104) comprises of roller shaft (109), said roller shaft (109) is covered with a cylindrical roller (110) , for example Type-1 rollers (104) are commercially available guide rollers.. Type-2 rollers (105) are specially designed guide rollers for the usage in the present invention, wherein the Type-2 roller (105) comprises of roller shaft (109), that comprises of cylindrical rollers (111) at the ends of the roller shaft (109) , such that the said roller shaft (109) is only covered at the edges with roller like structure, as disclosed in Fig 2. Type-1 and Type-2 guide rollers are arranged alternatively in vertical direction, and in multiple series. The Type-1 and Type-2 roller may be made of ceramic, aluminum, stainless steel or metal of any kind. During setting up a system for pharmaceutical use, the entire set up of the system may be made of stainless steel including Type-1 and Type-2 roller as per the requirement.

Referring to figure 3A, there is illustrated the liner (103) before coating the said liner with a batch solution of WSF. Figure 3B, there is illustrated the liner (103) that is coated with batch solution of WSF, such that it forms coated liner (112) with the uncoated edges (113) after the batch solution of WSF is coated in accordance with the present disclosure.

In another aspect of the present disclosure, a method of preparing a water soluble film on a liner is disclosed. The method comprises the steps of: (i) providing the liner and a batch solution based on a composition of said water soluble film, feeding the liner and the batch solution to a coating unit, (ii) coating the batch solution in a measured amount on the liner with edges being uncoated by using die-casting(iii) transferring the coated liner with the uncoated edges to a drying unit, wherein the drying unit comprises a plurality of air handling units, a plurality of first type guide rollers and a plurality of second type guide rollers. The method further comprises the step of (iv) passing the coated liner on the plurality of first type guide rollers and the uncoated edges on the plurality of second type guide rollers (v) drying the coated liner using the plurality of air handling units while passing the coated liner on the plurality of first type guide rollers and (vi) guiding the coated liner using a guide roll/nip roll, to detach the cold water soluble film formed from the liner for further use.

The present disclosure provides a method and system for preparing water soluble film without using heat on the detachable liner, wherein drying of the water soluble film is carried out with the help of centrally positioned air drying unit of the system. The drying unit comprises plurality of air handling units such as dehumidifier/air dryer. Optionally, the water soluble film may also be dried without using heat in continuous process on the detachable liner. Further, optionally the water soluble film may also be dried by using heat, wherein the drying temperature can be set in any required range.. More particularly the drying temperature can be set in the range from 50°C to 250°C, preferably from 60°C to 200°C, more preferably from 55°C to 170°C.

The system can be used for producing low flash point water-soluble film strips and edible film with heat sensitive material. Other film forming heat sensitive material can be converted into the water soluble film by using the system as disclosed in the present disclosure. Further, Multi layered water soluble film can be prepared by using the method with help of the detachable Liner i.e. Polyester. With the help of the system as disclosed in the present disclosure, dairy products, chocolates, pharma actives, other medicated actives having very low flesh point can be converted into the continuous film and flammable actives can be converted into the film.

Further, plurality of units of the system for preparing water soluble film as disclosed in the present invention, may be made and arranged in a vertical manner or in series due to its compactness, thereby increasing the productivity of preparing the cold water soluble film.

The Cold water soluble films as disclosed in the present invention can find diverse applications, in which a variety of substances such as detergents, enzymes, softeners, perfumes; agrochemicals like pesticides, fungicides, herbicides, weedicides, insecticides; agro nutrients like urea, fertilizers; dyes, pigments, hazardous chemicals, fluff, pulp, absorbents used in diapers; active agents for cleaning laundry, dishes, floorings, walls, furniture and the like are embedded singly or in combination for delivering them in precise and desired dosages. The cold water soluble film thus formed may find application in pharmaceutical film such as mouth dissolving strips, mouth melting strips, oral disintegrating films (ODS), API’s, packaging, edible films, formulation and food product strips.

Cold water soluble films find its use in a wide range of applications. These Cold water soluble films are used for specific unit dose packaging of detergents, agrochemicals, water treatment chemicals, food ingredients, pharmaceutical drugs, and dyes. Apart from these, the Cold water soluble films are used in embroidery and laundry bag manufacturing. Detergent packaging is the largest application for this type of cold water soluble film. The demand from other applications such as food packaging, pharmaceuticals, and laundry bags, and the rising awareness about environment-friendly products are driving the demand for water soluble films globally.

Conventional system of preparing water soluble films comprises of system that are arranged in a liner manner, such that once the water soluble film is coated over the liner, the coated film with the liner passes over the system in a liner manner for further process such as drying, etc, The present invention provide a problem solving approach wherein a system for preparing Cold water soluble films for delivering heat sensitive active ingredients is disclosed in the present invention is compact in nature and requires less space for installation.

The system and method of preparing a cold water soluble films as disclosed in the present invention has numerous advantages over the prior art. The present invention discloses a system for preparing a cold water soluble film that is compact in nature and requires less space for installation.The present invention discloses a system for preparing water soluble film that is easy to assemble and consumes less energy. Further, the system for preparing water soluble film as disclosed by the present invention, results in increase in production of water soluble film that simultaneously reduces the production time to prepare the water soluble film. The system for manufacturing cold water soluble films as disclosed in the present invention, address the drawback of the conventional system, wherein excess space requirement is avoided, with easy of assembling the system.

The above description is intended to describe the preferred embodiments of the invention in sufficient detail to enable those skilled in the art to practice the invention. The above description is intended to be illustrative and should not be interpreted as limiting the scope of the invention. Those skilled in the art to which the invention relates will appreciate that many variations of the described example implementations and other implementations exist within the scope of the claimed invention.

It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms mentioned.

,CLAIMS:
1. A system (101 ) for preparing a cold water soluble film(107) on a liner (103), comprising:
a coating unit (102) comprising a fluid delivery unit and a die for casting/coating a batch solution on the liner (103);
a drying unit (202) comprising a plurality of air handling units (106),
a plurality of first type guide rollers (104) and a plurality of second type guide rollers (105), wherein the plurality of first type guide rollers (104) and the plurality of second type guide rollers (105) are arranged in an alternate order;
Wherein the batch solution of water soluble film is coated on the liner (103) with edges being uncoated, using die-casting and the coated liner (112) with the uncoated edges (113) is transferred to the drying unit (202) so that the coated liner (112) is passed on the plurality of first type guide rollers (104) and uncoated edges (113) of the liner (103) is passed on the plurality of second type guide rollers (105).

2. The system as claimed in claim 1, wherein the liner (103) is made from materials such as paper, film, foil or fabric; more preferably of polyester film such as PET.

3. The system as claimed in claim 1, wherein the liner (103) is at least coated with one water soluble film.

4. The system as claimed in claim 1, wherein the cold water soluble film optionally comprises one or more layers of water soluble material.

5. The system as claimed in claim 1, wherein the cold water soluble film has a thickness ranging from 2 microns to 500 microns, preferably from 10 microns to 300 microns, more preferably from 12 microns to 250 microns.

6. The system as claimed in claim 1, wherein the plurality of air handling units comprises the plurality of air dryers (106).
7. The system as claimed in claim 1, wherein the drying unit (202) comprises a plurality of dehumidifiers (106).

8. The system as claimed in claim 1, wherein optionally, the drying temperature is set in the range from 50°C to 250°C, preferably from 60°C to 200°C, more preferably from 55°C to 170°C.

9. The system as claimed in claim 1, wherein the plurality of first type guide rollers (104) and the plurality of second type guide rollers (105) are arranged in vertical direction in an alternate order.

10. The system as claimed in claim 1, wherein the plurality of first type guide rollers (104) and the plurality of second type guide rollers (105) are arranged in multiple series.

11. 11. The system as claimed in claim 1, wherein the plurality of first type guide rollers (104) and the plurality of second type guide rollers (105) have two different shapes.

12. The system as claimed in claim 1, wherein the first type guide rollers (104) comprises of roller shaft (109) that is covered with a cylindrical roller (110).

13. The system as claimed in claim 1, wherein the second type guide rollers (105) comprises of cylindrical roller at the edges of the roller shaft (109), such that the said shaft (109) is only surrounded at the edges (111) with cylindrical roller.

14. The system as claimed in claim 1, wherein the plurality of first type guide rollers (104) and the plurality of second type guide rollers (105) are made of stainless steel, alluminium, or ceramic or any metallic material.

15. A method of preparing a cold water soluble film(107) on a liner (103), the method comprising the steps of:

providing the liner (103) and a batch solution based on a composition of said water soluble film;
feeding the liner (103) and the batch solution to a coating unit (102);
coating the batch solution on the liner (103) with edges being uncoated by using die-casting;
transferring the coated liner (112) with the uncoated edges (113) to a drying unit (202), wherein the drying unit (202) comprises a plurality of air handling units, a plurality of first type guide rollers (104) and a plurality of second type guide rollers (105);
passing the coated liner (112) on the plurality of first type guide rollers (104) and the uncoated edges (113) on the plurality of second type guide rollers (105);
drying the coated liner (112) using the plurality of air handling units while passing the coated liner (112) on the plurality of first type guide rollers (104);and
guiding the coated liner (112) using a guide roll/nip roll (108), to detach the liner (103) from the cold water soluble film (107) for further use.

16. The method as claimed in claim 15, the plurality of air handling units may comprise a plurality of air dryers or dehumidifiers (106)

17. The method as claimed in claim 15, wherein the liner is made of a polyester film.

18. The method as claimed in claim 15, wherein the water soluble film comprises one or more layers of water soluble material.

19. The method as claimed in claim 15, wherein the cold water soluble films may find diverse applications, in which a variety of substances such as detergents, enzymes, softeners, perfumes; agrochemicals like pesticides, fungicides, herbicides, weedicides, insecticides; agro nutrients like urea, fertilizers; dyes, pigments, hazardous chemicals, fluff, pulp, absorbents used in diapers; active agents for cleaning laundry, dishes, floorings, walls, furniture and the like are embedded singly or in combination for delivering them in precise and desired dosages

20. The method as claimed in claim 15,wherein the cold water soluble film formed may find application in pharmaceutical film such as mouth dissolving strips, mouth melting strips, oral disintegrating films (ODS), API’s, packaging, edible films, formulation and food product strips.

21. The method as claimed in claim 15,wherein the cold water soluble films formed may find application in dairy products, chocolates, pharma actives, other medicated actives having very low flesh point that may be converted into the continuous film and flammable actives may be converted into the film.