TW575649B - Easily separable double coated tape having extension resistance - Google Patents

Abstract

The present invention relates to an easily separable double coated tape having extension resistance which comprising a release paper, two pressure-sensitive adhesive layers a polymer-layer. Two pressure-sensitive adhesive layers coating on both two sides of polymer-layer, and a release paper covering the pressure-sensitive adhesive layers thereon. The polymer-layer is characteristic of extension resistance and separating easily, and by this characteristic it overcomes inadequacy of prior double coated tape, such as low dimensional stability and low adhesive because of easy extension. Besides, the present invention easily separable double coated tape having extension resistance extend it's application by adding different additives into polymer layer increases color, heat resistance or conductivity, etc.

Description

575649 _Case No. 91113745_year month__ V. Description of the invention (1) The present invention relates to a double-sided adhesive tape with resistance to extension, breakage, and easy cutting, especially an easily punchable, breakable, easy to cut, and extensible resistance. And double-sided tape with excellent dimensional stability, high polymer polymer layer, resistance to extension, breakage and easy cutting. Press, the conventional double-sided tape is generally used for stationery and office supplies, or to replace general adhesives to paste industrial parts. Refer to Figure 1, which is a schematic diagram of the conventional double-sided tape 1, which is mainly composed of release paper 1. 1 and the pressure-sensitive adhesive layer 12. The higher-value non-matrix transparent double-sided tape, when used, is easy to be broken or cut due to the strong stretchability of the film formation of the tape, which leads to poor dimensional stability and even contamination of the attachment. Material surface. In addition, the conventional double-sided tape has poor transparency and cannot be made into double-sided tapes of different colors. Therefore, it does not have the characteristics of hiding power or discrimination. However, if pigments or pigments are added to the gum, it will cause gum Denaturation, which in turn affects the original properties of the colloid. In addition, the conventional double-sided tape has poor glue heat resistance. When the operating temperature reaches 150 t, its glue strength decreases, which may cause the original adhesive substance to fall. The main object of the present invention is to provide a double-sided adhesive tape with a polymer polymer layer, which is resistant to extension, breakage and easy cutting, and has the characteristics of breakability, easy cutting and ductility. A secondary object of the present invention is to provide a double-sided adhesive tape with a polymer polymer layer, which is resistant to extension, breakage and easy cutting, and which can have different colors, high heat resistance, or high conductivity according to the requirements of use. In order to achieve the above object, the present invention is realized as follows: A double-sided adhesive tape with resistance to extension, breakage and easy cutting is mainly composed of release paper, a pressure-sensitive adhesive layer, and a polymer polymer layer. Both sides are equipped with

575649 _Case No. 91113745_ Year Month Amendment _ V. Description of Invention (2)

Pressure-sensitive adhesive layer, and release paper is arranged on the surface of the pressure-sensitive adhesive layer, and the polymer polymer layer has the characteristics of fragile and easy to cut and resistance to ductility; this can improve the easy extensibility of the conventional double-sided tape. Disadvantages of poor dimensional stability and poor adhesion. In addition, dyes, heat-resistant auxiliaries, or conductive auxiliaries can be added to the polymer polymer layer to give it color, high temperature resistance, and good electrical conductivity. In order to make your reviewing committee understand the purpose, features, and effects of the present invention, the following specific embodiments and the accompanying drawings are used to make a detailed description of the present invention, which will be described later.

Please refer to FIG. 2 and FIG. 3, which are a schematic diagram of the present invention and a schematic diagram of a peeling single layer structure, respectively. As shown in the figure: the double-sided adhesive tape 2 with resistance to extension, breakage and cutting according to the present invention is mainly composed of release paper 2 1, pressure-sensitive adhesive layer 2 2, polymer polymer layer 2 3, and pressure-sensitive adhesive layer 2 4 The above-mentioned polymer polymer layer 23 is arranged between the pressure-sensitive adhesive layer 22 and the pressure-sensitive adhesive layer 24, and the release paper 21 is arranged on the surface of the pressure-sensitive adhesive layers 2 2 and 2 4.

The above polymer polymerization layer 23 is composed of 2-Ethylhexyl acrylate, Butyl acrylate, Ethyl acrylate, Methyl acrylate, and acrylic acid ( Acrylic acid), Methyl methacrylate ^ Methacrylic acid, Vinyl acetate, Styrene, or 2-Methacrylic acid Various monomers such as 2-Hydroxyethyl methacrylate, and Ethyl acetate, Toluene, xylene

Page 7 575649 _Case No. 91113745_Amendment _ V. Explanation of the invention (3) (Xylene), Methyl ethyl ketone, Acetone, Methanol, Ethanol or isopropyl Alcohol (I s ◦ pr opa η ο 1) and other solvents are mixed. The types and proportions of the monomers and solvents used are shown in Tables 1 and 2. The monomers and solvents required for the reaction can be matched as required. , As long as its proportion is within the limit and its overall percentage is 100%. Table 1. Types of monomers and their usage ratios Monomer name usage ratio (%> Isooctyl acrylate 0.1-20 Butyl acrylate 10-¾ Ethyl acrylate 0.1-20 Methyl acrylate 10-30 Acrylic acid 0.1-15 A Methyl acrylate 15-70 methacrylic acid 0.1-15 vinyl acetate 0.1-30 styrene 0.1-60 2-hydroxyethyl methacrylate 0.1-15 <%> Ethyl acetate 0.1-100 toluene 0.1 — 100 xylene 0.1-50 methyl ethyl ketone 0.1 — 100 propane 0.1-30 methanol 0.1-30 ethanol 0.1-30 isopropanol 0.1-30

575649 _Case No. 91113745_year month_ || i_ V. Description of the invention (4) Next, benzene peroxide (86112〇71 Peroxide) is added to the reaction axe in an amount of 0.1% to 10% relative to the monomer. ) Or Azobisoisobutylnitrile as a starter, and react at a temperature of 60 to 100 ° C. for 4 to 24 hours to cause a polymerization reaction of the monomers to form a high molecular polymer. The above-mentioned polymer has a 2nd glass transfer temperature of -20 to 100 ° C and a molecular weight of 50,000 to 1 million, rather than non-volitile. It accounts for 20-60 〇 / 〇. Then, based on this polymer, add appropriate additives, such as bridging agent, tackifier, dye, pigment, flame retardant, conductive powder, thermal conductive powder or other additives, etc. The homogeneous sentence is stirred to make it mixed with the polymer material, and then the polymer polymer layer 2 3 with a thickness of about 2-100 micrometers or even thicker is made by a coating machine. After that, on the polymer polymer layer 23, various pressure-sensitive adhesive layers are applied or transferred to form a double-sided adhesive tape with a polymer polymer layer, which is resistant to extension, breakage and easy cutting. The above-mentioned pressure-sensitive adhesive layer may be an acrylic pressure-sensitive adhesive layer, a pressure-sensitive adhesive layer prepared by natural rubber, a pressure-sensitive adhesive layer formed by natural rubber reaction, a pressure-sensitive adhesive layer prepared by synthetic rubber, or a synthetic rubber reaction. Into a pressure-sensitive adhesive layer. Because it is double-sided sizing, the pressure-sensitive adhesive layers with different adhesive properties can be coated or recoated separately to make easy-to-break, transparent double-sided adhesive tapes with different adhesive properties on both sides. The double-sided adhesive tape with resistance to extension, breakage and cutting can be made into a thinner or even thicker double-sided adhesive tape with the same thickness as the conventional double-sided adhesive tape by adjusting the thickness of the polymer layer 23.

575649 _Case No. 91113745_ Year Month Date__ V. Description of the invention (5) The double-sided adhesive tape of the present invention with resistance to extension, breakage and easy cutting, the pressure-sensitive adhesive layer of the present invention can be highly adhesive or can be peeled off temporarily Can be directly coated on the release paper 21, and then transferred to the polymer layer 23, or directly coated on the polymer layer 23 and dried, and then release paper 2 1 Rewinded into double-sided tape. In addition, other natural or synthetic fragile films, such as natural starch, polyvinyl alcohol, polyacrylamide, or cellophane film, can also be used as a matrix to make a fragile, easy-to-cut, ductile, etc. Double-sided tape. To sum up, the double-sided adhesive tape with anti-extension, breakability, and easy cutting of the present invention is based on a macromolecular polymer, and is coated or transferred with various pressure-sensitive adhesive layers. The polymer's easy-to-cut and cut-resistant properties are more convenient to use than conventional double-sided adhesive tapes, and its transparency is higher than that of conventional double-sided adhesive tapes consisting of only pressure-sensitive adhesive layers. With different additives to enhance its properties, to expand the scope of application of double-sided tape with resistance to extension and easy to break and cut. Although the present invention is disclosed as above with the general preferred embodiments, it is not intended to limit the scope of implementation of the present invention. Any person skilled in the art can make some modifications and retouches without departing from the spirit and scope of the present invention, and any structural changes made according to the description or illustrated content of the present invention are included in the present invention. Equal changes and modifications shall be covered by the patent scope of the present invention, and the definition shall be based on the patent scope. In order to make your reviewers better understand the characteristics of the double-sided adhesive tape of the present invention, which is resistant to extension, breakage and easy cutting, the attached samples of double-sided adhesive tapes used in Annexes 1, 2, 3, and 4 and the attachments of the present invention are 5 Easy-cut double-sided tape samples for your review members' reference!

Page 10 575649 _Case No. 91113745_ Rev. _ V. Description of the Invention (6) Attachment 1. Traditional cotton paper double-sided tape, although it can be torn by hand, is slightly extensible and opaque. Attachment 2. The intermediate substrate is a transparent PET film. Although it can be made into a transparent double-sided tape, it cannot be torn off by hand. Attachment 3. The foamed double-sided adhesive tape is neither transparent nor easy to tear. Attachment IV. Generally, the so-called non-substrate transparent double-sided adhesive tape is transparent, but when it is torn, it is easy to stretch and stick to the knife, and it will even rebound. It has poor dimensional stability. Attachment 5. The present invention is a double-sided adhesive tape that is transparent, easy to tear, easy to cut, and has good dimensional stability.

575649 _Case No. 91113745_ Year Month Revision _ Brief Description of Drawings Figure 1 is a schematic diagram of a conventional double-sided tape. FIG. 2 is a schematic diagram of a double-sided adhesive tape with resistance to extension, breakage and easy cutting according to the present invention. Fig. 3 is a schematic diagram showing the structure of peeling a single layer of a double-sided adhesive tape with resistance to extension, breakage and easy cutting according to the present invention. Brief description of drawing number: double-sided tape .............. 1 Forming paper ......... 11 Pressure sensitive adhesive layer. ........................ 12 Pairs with resistance to extension and breakability Masking tape ......... 2 Release paper ............... .............. 2 1 Pressure-sensitive adhesive layer ............ ........... 22 Polymer Polymer I &quot; '............... 23 Pressure-sensitive adhesive layer ............ 24

Claims (1)

575649 Case No. 91113745 Amended on June 6, Patent Application Scope 1. A double-sided adhesive tape with resistance to extension, breakage and easy cutting, which mainly includes release paper, pressure-sensitive adhesive layer and polymer polymer layer. Among them, the polymer The polymerization layer may be an acrylic resin, which is made by mixing monomers and solvents with an initiator and directly synthesized through polymerization reaction or adding appropriate additives after polymerization, and the pressure-sensitive adhesive layer may be acrylic pressure-sensitive One of an adhesive layer, a pressure-sensitive adhesive layer prepared from natural rubber, a pressure-sensitive adhesive layer made from natural rubber, a pressure-sensitive adhesive layer made from synthetic rubber, and a pressure-sensitive adhesive layer made from synthetic rubber, the polymer Both sides of the polymer layer are provided with a pressure-sensitive adhesive layer, and the surface of the pressure-sensitive adhesive layer is provided with a release paper, and the polymer polymer layer has the characteristics of being easy to cut and cut and extending resistance; thereby improving the conventional double-sided Disadvantages such as poor dimensional stability and poor adhesion due to easy stretch of the tape. 2. The double-sided adhesive tape with resistance to extension, breakability and cutting as described in item 1 of the scope of patent application, wherein the polymer layer is made of isooctyl acrylate, butyl acrylate, ethyl acrylate, methyl acrylate , Acrylic acid, methyl methacrylate, methyl acrylic acid, vinyl acetate, styrene, or 2-hydroxyethyl methacrylate and other various monomers are selected to add at least two totals of 100%, and ethyl acetate , Xylene, xylene, acetophenone, acetone, methanol, ethanol, or isopropanol, and other solvents are selected to add up to 100% and mixed, and the initiator is added, and the polymer is synthesized through polymerization. Thing. 3. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 2 of the scope of the patent application, wherein the ratio of isooctyl acrylate to the total monomers used is 0.1% to 2 0/0 ° 4. The double-sided adhesive tape with resistance to extension and breakage and easy cutting as described in the second item of the patent application scope, wherein butyl acrylate accounts for 10 to 30% of the total monomers used. Page 13 575649 Case No. 91113745 Amendment VI. Patent application scope 5. The double-sided adhesive tape with resistance to extension and breakage and easy cutting as described in item 2 of the patent application scope, in which ethyl acrylate accounts for the total monomers used The ratio is 0.1% to 20%. 6. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 2 of the scope of the patent application, in which ethyl acrylate accounts for 10 to 30% of the total monomers used. 7. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 2 of the scope of patent application, wherein acrylic acid accounts for 0.1% to 15% of the total monomers used. 8. The double-sided adhesive tape with resistance to extension, breakability, and cutting as described in item 2 of the scope of the patent application, wherein methyl methacrylate accounts for 15 to 70% of the total monomers used. 9. The double-sided adhesive tape with resistance to extension, breakability and cutting as described in item 2 of the scope of patent application, wherein the proportion of methacrylic acid in the total monomer used is 0.1% to 15% 〇I 0. The double-sided adhesive tape with resistance to extension, breakage, and easy cutting as described in item 2 of the patent scope, wherein vinyl acetate accounts for 0.1% to 30% of the total monomers used. The double-sided adhesive tape with resistance to elongation, breakage and cutting, wherein styrene accounts for 0.1% to 60% of the total monomers used. 1 2. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 2 of the scope of patent application, wherein the proportion of ethyl 2-hydroxyfluorenyl ethyl acrylate in the total monomers used is 0.1% to 15%. 13. The double-sided adhesive tape with resistance to extension, breakability, and cutting as described in item 2 of the scope of patent application, wherein ethyl acetate accounts for 0.1 to 100% of the total solvent used. 1 4. Double sides with resistance to extension and breakability and easy cutting as described in item 2 of the scope of patent application Page 14 575649 Case No. 91113745 Amendment S. Patent application tape. Among them, toluene accounts for 0.1 to 100% of the total solvent used. 15. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 2 of the scope of patent application, wherein xylene accounts for 0.1 to 50% of the total solvent used. 16. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 2 of the scope of patent application, wherein methyl ethyl ketone accounts for 0.1 to 100% of the total solvent used. 17. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 2 of the scope of patent application, wherein acetone accounts for 0.1 to 30% of the total solvent used. 18. The double-sided adhesive tape with resistance to extension, breakage and easy cutting as described in item 2 of the scope of patent application, in which methanol accounts for 0.1 to 30% of the total solvent used. 1 9. Double-sided with resistance to extension and breakage and easy cutting as described in item 2 of the scope of patent application Adhesive tape, in which ethanol accounts for 0.1 to 30% of the total solvent used. 20. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 2 of the scope of patent application, wherein isopropanol accounts for 0.1 to 30% of the total solvent used. 2 1. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 2 of the scope of patent application, wherein the initiator may be phenylhydrazine peroxide or azobisisobutyl. 2 2. The double-sided adhesive tape with resistance to elongation, breakage, and cutting as described in item 2 of the scope of patent application, wherein the amount of the initiator added is 0.1% to 10% relative to the monomer. 2 3. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 2 of the scope of patent application, wherein the polymerization reaction temperature is 60 to 100 ° C, and the reaction time is 4 to 24 hours. . 2 4. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 2 of the scope of patent application, wherein the second glass transition temperature of the polymer is -2 0 Page 15 575649 Case No. 9Π13745 Month, Amendment 6. The scope of patent application is between 100 ° C. 25. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 2 of the scope of patent application, wherein the molecular weight of the high molecular polymer is between 50,000 and 1 million. 26. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 2 of the scope of patent application, wherein the non-volatile content of the high molecular polymer accounts for 20-60%. 27. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 1 of the scope of patent application, wherein the additive may be a bridging agent, a tackifier, a dye, a pigment, a flame retardant, a conductive powder, a thermally conductive powder, or Other additives. 2 8. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 1 of the scope of patent application, wherein the polymer layer can be natural starch, polyvinyl alcohol, polypropylene amidamine, or cellophane film. 29. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 1 of the scope of patent application, wherein the thickness of the polymer layer is about 2-100 microns, or even thicker. 30. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 1 of the scope of patent application, wherein the pressure-sensitive adhesive layer may be highly adhesive or temporarily adhered and then peelable. 31. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 1 of the scope of patent application, wherein the pressure-sensitive adhesive layer can be applied or transferred onto the polymerized polymer layer. 32. The double-sided adhesive tape with resistance to extension, breakage and easy cutting as described in item 1 of the scope of patent application, wherein the pressure-sensitive adhesive layer can be directly coated on a release paper and then transferred to a polymer layer. P.16 575649 _Case No. 91113745_ Revised Year of the Month_ Sixth, the scope of patent application 3 3. The double-sided adhesive tape with resistance to extension, breakage and cut as described in the first scope of patent application, wherein the pressure-sensitive adhesive layer Can be directly glued on the polymer layer and dried, and then rolled up with release paper. 3 4. The double-sided adhesive tape with resistance to extension, breakage, and cutting as described in item 1 of the scope of patent application, wherein the adhesiveness of the pressure-sensitive adhesive layer on the front and back sides may be the same or different. Page 17