FORM '2
THE PATENTS ACT, 1970 (39 of 1970)
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION (See Section 10 and rule 13)
1. TITLE OF THE INVENTION
"SOLVENT DESTRUCTIBLE, HEAT DESTRUCTIBLE TAMPER EVIDENT DUPLEX LAMINATE FOR METER SECURITY SEAL" AND THE METHOD OF MANUFACTURING THE SAME.
2. APPLICANTS
(a) Name : PRS Solutions Private Limited
(b) Nationality: Indian
(c) Address : 63, Bombay Samachar Marg, Mumbai - 400 001, Maharashtra State, India
The following specification particularly describes the invention and the manner in which it is to be performed

FIELD OF INVENTION
The present invention relates to a "solvent destructible, heat destructible, tamper evident duplex laminate for meter security seals" and the process of manufacturing the same. It is a heat sensitive, solvent sensitive and tamper evident pressure sensitive adhesive label designed for meter security seal. There are few variants like the silver/bronze or other sparkling colour of the said seals as the base film. The duplex laminate consist of transparent/silver/bronze or other coloured base film partially laminated special destructible vinylic polymer based film or destructible metallised holographic film, coated with adhesive. This product provides to a manufacturer as well as an end customer with the advantage of tamper evident seal' specially designed as an attempt to provide foolproof solution to prevent power theft. The same can also be utilized as tamper evident seal' for any other type of meter to avoid revenue loss and prevent the fraudsters and counterfeiters from illegal, unauthorized and unintended use of the product.
DESCRIPTION OF THE PRIOR ART
Electric power theft is one of the most perennial problem prevalent in almost all parts of our country and particularly in the rural parts.
~£-

These days the country is as it is facing acute electric power crunch.
The demand for power has already surpassed the actual production. Moreover the demand for power is further growing at an enormous rate is not compensated with a simultaneous increase in the production of the same thereby widening the demand-supply gap. With this existing scenario the theft of the already insufficient electricity is a critical issue and solution to it has to found on to priority.
The recent breed of fraudsters are armed with sophisticated manufacturing and detecting equipments coupled with enhanced technical knowledge. Hence, in the light of these facts, the traditional security solutions adopted by the power supply companies are of little help in the current scenario. The need of the hour is requirement of a foolproof solution to curb this menace. In spite of usage of various kind of seals and security measures to curb this menace the problem still persists and needs to be addressed on priority. Traditional technologies for preventing power theft utilized lead seals which are no longer in use today since lead is being recognized as an health hazard and its use as meter seals has been banned. Other plastic seals like interlocking polycarbonate seals with a metallic wire mounted on the metering units are being opened and pilfered with. These seals were not able to prevent power theft. Other protection and authentication
—i —

solutions like labels and seals made using holograms, low strength security papers which would come off in bits and pieces when attempted to be removed from the substrate were also used. Certain features such as watermarks, fluorescent fibers, barcodes etc were also used for providing added security. However, low strength security paper based labels could be easily removed in one piece by the application of some heat energy. Another method was utilization of drops of commonly available solvents which eventually seeps into the adhesive layer swells/dissolves the adhesive thereby loosening it, facilitating the easy peel off of the labels without damaging it in the process. All these shortcomings called for the usage of unique seal which would be tamper evident, destruct on exposure to some temperature, destructible with the aforementioned common solvents at the same time should be easily dispensable to allow easy application. As a positive step towards providing a solution to tackle this issue a method is developed of using a unique self-adhesive duplex laminate seal which incorporates all the aforesaid conditions to prevent this illegal activity. The security level was further increased with various kinds of security inks used for printing on them with visible and hidden messages readable only with the aid of certain specified devices.
-4-

SUMMARY OF THE INVENTION
The present invention provides a unique solution to electricity boards, brand owners, various industries manufacturing their products, components, parts, assemblies and users of such products, instruments such as energy meters and/or any other meter to
safeguard their brands by curbing pilferage and vandalism by counterfeiters and subsequently avoid massive revenue losses due to
sizeable power thefts. This product offers a perfect balance of advanced effectiveness versus the cost for the same.
The present invention relates to the development and process of manufacturing solvent destructible, heat destructible and tamper evident duplex film laminate having inherent property of exhibiting different coloured glow when exposed to UV light or optionally in-built silver/bronze or other sparkling effects. These films are printing ink-receptive, thermal transfer printable and can be easily printed with water based printing inks, invisible and other security inks available in the market. To make the combination all the more complicated and foolproof, it has been partially laminated on the top printed side with a special white co-extruded film made of expandable vinylic polymer layer coated with a clear acrylic adhesive. The laminating self adhesive strip could be made up of desructible metallised holographic strip

coated with acrylic adhesive. The entire construction of the seal can be printed with a generic pattern inscribing the name/logo of the customer using regular flexo printing inks or special UV, IR readable or any other security ink available in the market. Other printing methods can also be used for making of this seal.
The base self adhesive film of this duplex laminate seal is formulated by a combination of vinylic copolymer with a thermoplastic acrylic polymer in ratios of 100:9 to 100:32 to form a solution made in regular aromatic solvent. This solution is coated on a double sided silicone release resin coated substrate by conventional method of coating by coating equipment to form a uniform film. The coated film such obtained has a suitable thickness maintaining desire properties. The film has a special property of being strong enough to facilitate dispensing in its final (label) form at the same time strength low enough to prevent its removal after being applied on the substrate without tearing in the end product form. This film is coated with hereinafter described a special high tack adhesive by the transfer adhesive coating technique to convert the film into a self-adhesive film which forms the basic raw material for the manufacturing of the said tamper evident, destructible with heat and solvent destructible seals. For achieving this the high tack adhesive is coated on double sided silicone resin coated substrate and laminated with the said film. The
-4 -

double sided silicone release resin coated substrate utilized for the first step of film forming is removed by rewinding the stock on the
mechanical rewinder to get the solvent destructible, heat destructible, tamper evident multi purpose security base film.
The high tack adhesive is applied by process using conventional method of coating by coating equipment followed by using known drying-methods. This special high tack adhesive exhibits property of adhering to regular substrates as well as low energy surfaces like polypropylene, polyethylene etc. The high tack special adhesive is manufactured by blending various materials comprising natural and/or synthetic rubbers, tackifying resins of natural/synthetic type, antioxidants followed by solvating with hydrocarbon/ aromatic solvents to form a compound of proper consistency to facilitate coating and texture commensurate to the coating equipment. In the present invention, the special high tack adhesive includes a tackifier which can be formed of hydrocarbon resins, rosin and rosin derivatives, polyterpenes, coumarone-indene resins, any compatible conventional tackifier or mixtures thereof along with mineral oils which serve as plasticizers.
The material used for the double sided silicone release resin coated substrate could be different papers like Glassine, Kraft or various
~ 1 -

polymeric films like Polyester, Polyethylene, Polyvinyl Chloride etc or
polycoated papers.
The stock formed herewith utilizing the aforesaid technique and ingredients is utilized as the basic raw material which goes into the making the seals. For achieving this, the solvent sensitive, heat sensitive and tamper evident self adhesive film of this duplex laminate seal is slit in to desired width. This slit self adhesive tamper evident film forms the base of the duplex laminate.
This self adhesive base film roll is mounted on a centre drum based flexo printing machine equipped with unwind and windup stations for printing as well as laminating one or more self adhesive films on one another.
The base film can be printed with require printing of customer name/logo with regular or UV, IR readable inks or other security printing inks available in the market, followed by partially laminating on the top printed side with expandable vinylic self adhesive film or destructible metallised holographic film having acrylic adhesive thereby forming a duplex laminate. Further, security features may be added in the form of UV, IR readable inks or other security printing inks available in the market. The seal can be further raised to still

higher level of security by printing barcodes and serial numbers using a separate pass on a separate barcode & serial numbering machine.
The following is the schematic representation of the construction of
the solvent destructible, heat destructible, tamper evident meter seal
Security Label:
PPPPPPPPPPPPPPP UV/IR readable printing,
barcoad/serial number
FFFFFFFFFFFFFFF — -Expandable
Vinylic / Destructible
metallised holographic film partial
lamination
AAAAAAAAAAAAA Acrylic adhesive
FFFFFFFFFFFFFFF Tamper evident, heat sensitive,
solvent sensitive film.
AAAAAAAAAAAAAA —High tack adhesive
LLLLLLLLLLLLLLLL Double sided Silicone resin
coated substrate
— e)~

WE CLAIM
1. A method of manufacturing "solvent destructible, heat destructible, tamper evident duplex laminate for meter security seal" comprises of the following :
(a) coating the formulated compound to constitute a film on a double sided silicone resin coated substrate;
(b) coating of high tack adhesive on double side silicone resin coated substrate and then by laminating the said film formed in the step 1 (a) to the said high tack adhesive to get the "solvent destructible, heat destructible, tamper evident film for security label";
(c) The said formulated adhesive coated film obtained in step 1 (b) is slit in desired length and size;
(d) Lamination of adhesive coated destructible metallised holographic film and/or a tamper evident semigloss, white co-extuded film made of vinylic polymer to coated film obtained in step 1 (c);
(e) Printing with conventional inks, UV 8B IR readable special security printing inks in generic, message format or as per specific customer requirement;
\o

(f) Printing with unique barcodes(decodable with barcode reader) and/or serial numbers to raise the label security to a higher level.
2. "Solvent destructible, heat destructible, tamper evident meter security seal as claimed in claim 1, wherein the said formulated compound is made by combination of vinylic copolymer with a thermoplastic acrylic polymer in ratios of 100:9 to 100:32 to form a paste in regular aromatic solvent by conventional method of coating by coating equipment.
3. "Solvent destructible, heat destructible, tamper evident meter security seal as claimed in claim 1, where in the said high tack adhesive is made by blending various materials comprising natural and/or synthetic rubbers, tackifying resins of natural/synthetic type, antioxidants, a tackifier which can be formed of hydrocarbon resins, rosin and rosin derivatives, polyterpenes, coumarone-indene resins, any compatible conventional tackifier or mixtures thereof along with mineral oils which are used as plastisizers followed by solvating with hydrocarbon/ aromatic solvents to form a compound of proper consistency to facilitate coating and texture commensurate to the coating equipment.

4. Solvent destructible, heat destructible, tamper evident meter security seal as claimed in claim 1, wherein the said substrate could be papers like Glassine, Kraft or polymeric films like Polyester, Polyethylene, Polyvinyl Chloride or poly coated papers.
5. A method of manufacturing "Solvent destructible, heat destructible, tamper evident meter security seal" as substantially described hereinabove.
6. A method of manufacturing "Solvent destructible, heat destructible, tamper evident meter security seal" as claimed in Claims 1, 2, 3 & 4 above by which "solvent destructible, heat destructible, tamper evident meter security label" is obtained.
Dated this 16th day of November, 2006
BHARAT S.SHAH
Duly Constituted Attorney
— Yl~~

ABSTRACT
A method of manufacturing "solvent destructible, heat destructible, tamper evident duplex laminate meter security label" comprising coating the formulated compound to constitute a film on a double sided silicone resin coated substrate, thereafter coated with high tack adhesive on double side silicone resin coated substrate followed by lamination of adhesive coated holographic metallised film and/or a tamper evident semigloss, white co-extuded film made of vinylic polymer and printed with conventional flexographic and other inks, UV and/or IR readable inks, barcoades, serial numbers etc. followed by punching to desired shape and size.
(Bharat S. Shah) Duly Constituted Attorney