CN112574681A - PVC protective film and preparation method thereof - Google Patents
PVC protective film and preparation method thereof Download PDFInfo
- Publication number
- CN112574681A CN112574681A CN202011514235.4A CN202011514235A CN112574681A CN 112574681 A CN112574681 A CN 112574681A CN 202011514235 A CN202011514235 A CN 202011514235A CN 112574681 A CN112574681 A CN 112574681A
- Authority
- CN
- China
- Prior art keywords
- protective film
- pvc protective
- solution
- acrylate
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 94
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 60
- 239000011248 coating agent Substances 0.000 claims abstract description 59
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 52
- 239000010410 layer Substances 0.000 claims abstract description 46
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 36
- 239000010703 silicon Substances 0.000 claims abstract description 36
- 238000002955 isolation Methods 0.000 claims abstract description 27
- 239000012790 adhesive layer Substances 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 64
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 38
- 238000002156 mixing Methods 0.000 claims description 22
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 18
- 229910052731 fluorine Inorganic materials 0.000 claims description 18
- 239000011737 fluorine Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 15
- 239000008213 purified water Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000007865 diluting Methods 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 claims description 11
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 238000012546 transfer Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000003153 chemical reaction reagent Substances 0.000 claims description 2
- -1 acrylic ester Chemical class 0.000 description 16
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 15
- 235000012431 wafers Nutrition 0.000 description 14
- 229920001577 copolymer Polymers 0.000 description 12
- 239000007788 liquid Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 230000003746 surface roughness Effects 0.000 description 8
- 239000003292 glue Substances 0.000 description 6
- 244000043261 Hevea brasiliensis Species 0.000 description 5
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 5
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 5
- 239000012948 isocyanate Substances 0.000 description 5
- 150000002513 isocyanates Chemical class 0.000 description 5
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 5
- 229920003052 natural elastomer Polymers 0.000 description 5
- 229920001194 natural rubber Polymers 0.000 description 5
- 229920002545 silicone oil Polymers 0.000 description 5
- 229920001187 thermosetting polymer Polymers 0.000 description 5
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- OEIWPNWSDYFMIL-UHFFFAOYSA-N dioctyl benzene-1,4-dicarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C=C1 OEIWPNWSDYFMIL-UHFFFAOYSA-N 0.000 description 1
- BJAJDJDODCWPNS-UHFFFAOYSA-N dotp Chemical compound O=C1N2CCOC2=NC2=C1SC=C2 BJAJDJDODCWPNS-UHFFFAOYSA-N 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/245—Vinyl resins, e.g. polyvinyl chloride [PVC]
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/20—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/201—Adhesives in the form of films or foils characterised by their carriers characterised by the release coating composition on the carrier layer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2427/00—Presence of halogenated polymer
- C09J2427/003—Presence of halogenated polymer in the primer coating
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2427/00—Presence of halogenated polymer
- C09J2427/006—Presence of halogenated polymer in the substrate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2433/00—Presence of (meth)acrylic polymer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2451/00—Presence of graft polymer
- C09J2451/003—Presence of graft polymer in the primer coating
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to the technical field of protective films, in particular to a PVC protective film and a preparation method thereof, wherein one surface of the PVC protective film is a smooth surface, and the other surface of the PVC protective film is a matte surface; the smooth surface of the PVC protective film is provided with a non-silicon release layer; coating an isolation coating on the matte surface of the PVC protective film; an acrylate adhesive layer is arranged on the surface, far away from the PVC protective film, of the isolation coating; by the protective film and the preparation method thereof, the smoothness of the surface of the wafer is improved, the service performance of the wafer is ensured, and the PVC film is more uniform and flat in thickness and stable in viscosity.
Description
Technical Field
The invention relates to the technical field of protective films, in particular to a PVC protective film and a preparation method thereof.
Background
With the rapid development of the LED industry, the semiconductor technology of LED wafers is also changing day by day. According to the existing LED wafer semiconductor development process, a laser technology needs to be applied in the material cutting process, and in the laser processing process, the LED wafer semiconductor must be ensured not to be influenced by laser, so that the wafer damage is avoided.
In the context of the dicing technique described above, a dicing protective film for an LED wafer substrate is thus produced. Because of foreign technology confidentiality and material banning, the technology for cutting the protective film for the domestic LED wafer substrate is still in the early development and exploration stage, and basically follows the processing route of the PET protective film, namely, the organic silicon release layer is processed on the smooth surface of the PVC protective film, and then the acrylic ester coating is processed on the dumb surface. However, if the route is used, the requirement of the organosilicon curing condition on the temperature is high, so that the PVC protective film is seriously shrunk in the processing process, the thickness of the film is uneven, the subsequent gluing thickness is influenced, and the thickness and the viscosity are not stable. In addition, the raw material of the PVC protective film contains a plasticizer, such as DOP (dioctyl phthalate), DOTP (dioctyl terephthalate), etc., and the presence of the plasticizer causes a certain reduction in the tackiness of the acrylate adhesive layer. In addition, the organic silicon release agent is coated on the back surface of the PVC protective film, when the PVC blue film is rewound, the acrylate adhesive layer is in contact with the organic silicon release layer, and the surface of the acrylate adhesive layer contains silicon due to too high transfer of silicone oil, so that the silicone oil can be transferred to the surface of a wafer of a customer, and further the wafer has quality risks. In sum, the existing processing of the PVC blue protective film has a great improvement space, and the problems of overlarge shrinkage in the thermosetting process, overhigh silicone oil transfer and overlarge acrylic ester viscosity reduction are very easy to occur. Therefore, how to improve the problems and improve the product performance has very important significance in providing reliable PVC blue protective films for the domestic semiconductor industry as soon as possible.
Disclosure of Invention
The invention aims to provide a PVC protective film and a preparation method thereof, aiming at the defects and shortcomings of the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
according to the PVC protective film, one surface of the PVC protective film is a smooth surface, and the other surface of the PVC protective film is a matte surface; the smooth surface of the PVC protective film is provided with a non-silicon release layer; coating an isolation coating on the matte surface of the PVC protective film; and an acrylate adhesive layer is arranged on the surface, far away from the PVC protective film, of the isolation coating.
Furthermore, the light surface roughness Ra value of the PVC protective film is 0.01-0.2 mu m, the matte surface roughness Ra value of the PVC protective film is 0.4-0.6 mu m, the tensile strength of the PVC protective film is 40-60 MPa, and the elongation of the PVC protective film is 150-250%.
Further, the thickness of the non-silicon release layer is 0.3-1 μm; the thickness of the PVC protective film layer is 50-120 mu m; the thickness of the isolation coating is 0.5-4 mu m; the thickness of the acrylate adhesive layer is 6-30 mu m.
Further, the non-silicon release layer is formed by mixing a non-silicon release agent and an isopropanol solution to form a release preparation solution, and then the release preparation solution is coated on the smooth surface of the PVC protective film and is dried, cured and molded.
Further, the isolating coating is prepared by mixing an isolating agent and purified water into an isolating solution, coating the isolating solution on the matte surface of the PVC protective film, and baking and curing the coating.
Further, preparing an acrylate solution from an acrylate adhesive and a diluting solvent, fully mixing the acrylate solution with a curing reagent to obtain the acrylate solution, and baking and curing the acrylate solution to form an acrylate layer.
In order to solve the technical problems, the invention adopts the technical scheme that: the method comprises the following steps:
a. the non-silicon release layer is prepared by fully mixing and dispersing 90-110 parts by weight of non-silicon release agent and 20-50 parts by weight of isopropanol solution into a release preparation solution; coating the prepared release solution on the smooth surface of a PVC protective film, baking at the temperature of 60-80 ℃ for 30-120 seconds, and curing to form a non-silicon release layer;
b. fully mixing 90-110 parts by weight of a separant and 20-50 parts by weight of purified water until the mixture is completely dispersed to form an isolated solution, coating the isolated solution on the dumb surface of the PVC protective film in the step a, and baking at the temperature of 60-80 ℃ for 30-60 seconds to form an isolated coating;
c. adding 10-40 parts by weight of a diluting solvent for dissolving a curing agent into 0.1-4.0 parts by weight of the curing agent to prepare a curing agent; in addition, fully mixing 90-110 parts by weight of acrylate adhesive and 5-20 parts by weight of diluting solvent until the mixture is completely dispersed into an acrylate solution, adding all the curing agents prepared in the above steps into the acrylate solution obtained in the above steps, fully stirring to obtain an acrylate solution containing the curing agents, coating the acrylate solution containing the curing agents on a fluorine film, and baking at 90-100 ℃ for 30-120 seconds to cure the acrylate solution containing the curing agents on the fluorine film into an acrylate layer; transferring the formed acrylate layer on the fluorine film to the isolation coating through transfer coating equipment to form a four-layer PVC protective film;
d. and d, placing the PVC protective film with the four-layer structure in the step c into a curing room at the temperature of 25-60 ℃ for storing for 48-168 hours to obtain the completely cured PVC protective film.
Further, the isopropanol solution is formed by mixing isopropanol and purified water; the weight ratio of the isopropanol to the purified water is 1: 3.
In order to solve the technical problems, the invention adopts the technical scheme that: the method comprises the following steps:
a. coating a non-silicon release layer on the smooth surface of the PVC protective film;
b. coating an isolation coating on the matte surface of the PVC protective film prepared in the step a;
c. c, coating an acrylate adhesive layer on the isolation coating on the PVC protective film in the step b to form a four-layer PVC protective film;
d. and d, placing the PVC protective film with the four-layer structure in the step c into a curing room at the temperature of 25-60 ℃ for storing for 48-168 hours to obtain the completely cured PVC protective film.
Compared with the prior art, the invention has the beneficial effects that:
1. the non-silicon release agent is coated on the smooth surface of the PVC film, and the component of the non-silicon release agent is a copolymer containing long-chain alkyl, so that silicone oil is prevented from transferring to the surface of the wafer, the smoothness of the surface of the wafer is improved, and the service performance of the wafer is ensured. Meanwhile, the non-silicon release agent has lower curing temperature than the organic silicon release agent, so that the problem of shrinkage of the PVC film in the thermosetting process can be effectively solved.
2. The PVC film is processed by a barrier coating which is a copolymer of vinyl chloride, ethyl acetate and maleic anhydride or a copolymer of methyl methacrylate and natural rubber or an isocyanate solution, and the barrier coating has the functions of preventing DOP of the PVC film from being separated out and preventing the performance of a gluing layer from being influenced. Meanwhile, the adhesive can also play a role in enhancing the adhesion of the adhesive and the PVC base film.
3. Firstly, coating acrylic ester glue on a PET fluorine release film, and then transferring the acrylic ester glue to a PVC film matte surface isolation coating. The transfer coating mode can prevent the PVC film from being baked at high temperature, and avoid the problem of overlarge shrinkage in the thermosetting process, so that the thickness of the PVC film is more uniform and smooth, and the viscosity is stable.
Detailed Description
The present invention will now be described in detail with reference to specific examples, which are provided for illustration only and are not to be construed as limiting the invention
The raw materials used in the invention are non-silicon release agents produced by Nippon Zhongjing grease company, release agents produced by Shanghai Bozhang chemical company limited and acrylate glue produced by Anzo chemical company limited.
Example 1
The method for producing the PVC protective film comprises the following steps:
a. selecting a PVC protective film with the smooth surface roughness Ra value of 0.01 mu m, the matte surface roughness Ra value of 0.4 mu m, the tensile strength of 60MPa, the elongation of 200 percent and the thickness of 120 mu m, coating a release preparation solution on the smooth surface of the PVC protective film, and baking at the temperature of 70 ℃ for 30 seconds to solidify the release preparation solution into a non-silicon release layer with the thickness of 0.3 mu m;
wherein, 12.5 weight parts of isopropanol and 37.5 weight parts of purified water are fully mixed to prepare isopropanol solution, and then the prepared isopropanol solution is fully added into 90 weight parts of non-silicon release agent to be mixed and dispersed into the release preparation solution;
b. coating an isolation solution on the matte surface of the PVC protective film in the step a, baking the film at the temperature of 70 ℃ for 30 seconds, and curing the film into an isolation coating with the thickness of 2 microns;
wherein the isolating solution is prepared by fully mixing 100 parts by weight of isolating agent and 35 parts by weight of purified water until the isolating agent is completely dispersed; the release agent is any one of chloroethylene, ethyl acetate, isocyanate solution, copolymer of maleic anhydride and copolymer of methyl methacrylate and natural rubber.
c. Adding 10 parts by weight of a diluting solvent for dissolving the curing agent into 0.1 part by weight of the curing agent to prepare a curing agent; in addition, 100 parts by weight of acrylate adhesive and 12 parts by weight of diluting solvent are fully mixed until the acrylate compound liquid is completely dispersed, the curing agent prepared in the step is fully added into the acrylate compound liquid obtained in the step and fully stirred to obtain the acrylate compound liquid containing the curing agent, the acrylate compound liquid containing the curing agent is coated on a fluorine film, and the fluorine film is baked at the temperature of 100 ℃ for 120 seconds to cure the acrylate compound liquid containing the curing agent on the fluorine film into an acrylate layer with the thickness of 30 mu m; b, transferring the acrylate layer on the fluorine film to the isolation coating on the PVC protective film in the step b by using transfer equipment to form a four-layer PVC protective film;
d. and d, placing the PVC protective film with the four-layer structure in the step c into a curing room at 60 ℃ for 48 hours to obtain the completely cured PVC protective film.
Example 2:
the method for producing the PVC protective film comprises the following steps:
a. selecting a PVC protective film with the smooth surface roughness Ra value of 0.02 mu m, the matte surface roughness Ra value of 0.5 mu m, the tensile strength of 50MPa, the elongation of 150 percent and the thickness of 50 mu m, coating a release preparation solution on the smooth surface of the PVC protective film, and baking at the temperature of 60 ℃ for 120 seconds to solidify the release preparation solution into a non-silicon release layer with the thickness of 0.4 mu m;
fully mixing 10 parts by weight of isopropanol and 30 parts by weight of purified water to prepare isopropanol solution, and then adding all the prepared isopropanol solution into 110 parts by weight of non-silicon release agent to mix and disperse into the release preparation solution;
b. coating an isolation solution on the matte surface of the PVC protective film in the step a, baking for 60 seconds at the temperature of 80 ℃ to solidify into an isolation coating with the thickness of 4 mu m;
wherein the isolating solution is prepared by fully mixing 110 parts by weight of isolating agent and 50 parts by weight of purified water until the isolating agent is completely dispersed; the release agent is any one of chloroethylene, ethyl acetate, isocyanate solution, copolymer of maleic anhydride and copolymer of methyl methacrylate and natural rubber.
c. Adding 25 parts by weight of a diluting solvent for dissolving the curing agent into 2 parts by weight of the curing agent to prepare a curing agent; in addition, fully mixing 90 parts by weight of acrylate adhesive and 5 parts by weight of diluting solvent until the acrylate compound liquid is completely dispersed, adding all the curing agents prepared in the step into the acrylate compound liquid obtained in the step, fully stirring to obtain the acrylate compound liquid containing the curing agents, coating the acrylate compound liquid containing the curing agents on a fluorine film, and baking at the temperature of 95 ℃ for 30 seconds to cure the acrylate compound liquid containing the curing agents on the fluorine film into an acrylate layer with the thickness of 10 microns; b, transferring the acrylate layer on the fluorine film to the isolation coating on the PVC protective film in the step b by using transfer equipment to form a four-layer PVC protective film;
d. and d, placing the PVC protective film with the four-layer structure in the step c into a curing room at 25 ℃ for 168 hours to obtain the completely cured PVC protective film.
Example 3:
the method for producing the PVC protective film comprises the following steps:
a. selecting a PVC protective film with the smooth surface roughness Ra value of 0.01 mu m, the matte surface roughness Ra value of 0.6 mu m, the tensile strength of 40MPa, the elongation of 250% and the thickness of 80 mu m, coating a release preparation solution on the smooth surface of the PVC protective film, and baking at the temperature of 80 ℃ for 75 seconds to solidify the release preparation solution into a non-silicon release layer with the thickness of 1 mu m;
fully mixing 5 parts by weight of isopropanol and 15 parts by weight of purified water to prepare isopropanol solution, then putting all the prepared isopropanol solution into 100 parts by weight of non-silicon release agent, mixing and dispersing to obtain the release preparation solution;
b. coating an isolation solution on the matte surface of the PVC protective film in the step a, baking for 45 seconds at the temperature of 60 ℃ to solidify into an isolation coating with the thickness of 0.5 mu m;
wherein the isolating solution is prepared by fully mixing 90 parts by weight of isolating agent and 20 parts by weight of purified water until the isolating agent is completely dispersed; the release agent is any one of chloroethylene, ethyl acetate, isocyanate solution, copolymer of maleic anhydride and copolymer of methyl methacrylate and natural rubber.
c. Adding 40 parts by weight of a diluting solvent for dissolving the curing agent into 4 parts by weight of the curing agent to prepare a curing agent; in addition, fully mixing 110 parts by weight of acrylate adhesive and 20 parts by weight of diluting solvent until completely dispersing into an acrylate solution, adding all the curing agents prepared in the above step into the acrylate solution obtained in the above step, fully stirring to obtain an acrylate solution containing the curing agents, coating the acrylate solution containing the curing agents on a fluorine film, and baking at the temperature of 90 ℃ for 80 seconds to cure the acrylate solution containing the curing agents on the fluorine film into an acrylate layer with the thickness of 6 microns; b, transferring the acrylate layer on the fluorine film to the isolation coating on the PVC protective film in the step b by using transfer equipment to form a four-layer PVC protective film;
d. and c, placing the PVC protective film with the four-layer structure in the step c into a curing room at 40 ℃ for storage for 100 hours to obtain the completely cured PVC protective film.
Table 1 shows the data of the three examples of the present invention.
| Detecting items | Example 1 | Example 2 | Example 3 |
| Film shrinkage (horizontal/longitudinal) in the release coating process | 0.2%/0.5% | 0.3%/0.5% | 0.3%/0.6% |
| ② film shrinkage ratio (horizontal/longitudinal) in gluing process | 0.2%/0.5% | 0.3%/0.5% | 0.2%/0.6% |
| ③ silicon content of acrylic acid ester adhesive layer (%) | 0 | 0 | 0 |
| Iv viscosity Change value (gf/inch) | 5 | 6 | 5 |
| Fifthly, the thickness of the glue layer is different value (mum) | 1 | 1 | 1 |
Compared with the prior art, the invention has the beneficial effects that:
1. the non-silicon release agent is coated on the smooth surface of the PVC film, and the component of the non-silicon release agent is a copolymer containing long-chain alkyl, so that silicone oil is prevented from transferring to the surface of the wafer, the smoothness of the surface of the wafer is improved, and the service performance of the wafer is ensured. Meanwhile, the non-silicon release agent has lower curing temperature than the organic silicon release agent, so that the problem of shrinkage of the PVC film in the thermosetting process can be effectively solved.
2. The PVC film is processed by a barrier coating which is a copolymer of vinyl chloride, ethyl acetate and maleic anhydride or a copolymer of methyl methacrylate and natural rubber or an isocyanate solution, and the barrier coating has the functions of preventing DOP of the PVC film from being separated out and preventing the performance of a gluing layer from being influenced. Meanwhile, the adhesive can also play a role in enhancing the adhesion of the adhesive and the PVC base film.
3. Firstly, coating acrylic ester glue on a PET fluorine release film, and then transferring the acrylic ester glue to a PVC film matte surface isolation coating. The transfer coating mode can prevent the PVC film from being baked at high temperature, and avoid the problem of overlarge shrinkage in the thermosetting process, so that the thickness of the PVC film is more uniform and smooth, and the viscosity is stable.
The foregoing is for the purpose of illustrating the invention only and various simple changes and modifications within the spirit of the invention made by those skilled in the art should fall within the scope of the invention.
Claims (8)
1. A PVC protection film which is characterized in that: one surface of the PVC protective film is a smooth surface, and the other surface of the PVC protective film is a matte surface; the smooth surface of the PVC protective film is provided with a non-silicon release layer; coating an isolation coating on the matte surface of the PVC protective film; and an acrylate adhesive layer is arranged on the surface, far away from the PVC protective film, of the isolation coating.
2. A PVC protective film according to claim 1, characterized in that: the roughness Ra value of the smooth surface of the PVC protective film is 0.01-0.2 mu m, the roughness Ra value of the dummy surface of the PVC protective film is 0.4-0.6 mu m, the tensile strength of the PVC protective film is 40-60 MPa, and the elongation of the PVC protective film is 150-250%.
3. A PVC protective film according to claim 1, characterized in that: the thickness of the non-silicon release layer is 0.3-1 mu m; the thickness of the PVC protective film layer is 50-120 mu m; the thickness of the isolation coating is 0.5-4 mu m; the thickness of the acrylate adhesive layer is 6-30 mu m.
4. A PVC protective film according to claim 1, characterized in that: the non-silicon release layer is formed by mixing a non-silicon release agent and an isopropanol solution to form a release preparation solution, and then the release preparation solution is coated on the smooth surface of the PVC protective film and is dried, cured and molded.
5. A PVC protective film according to claim 1, characterized in that: the isolation coating is prepared by mixing an isolating agent and purified water into an isolation solution, coating the isolation solution on the dummy surface of the PVC protective film, and baking and curing the isolation coating.
6. A PVC protective film according to claim 1, characterized in that: preparing an acrylate solution from an acrylate adhesive and a diluting solvent, fully mixing the acrylate solution with a curing reagent to obtain the acrylate solution, and baking and curing the acrylate solution to form an acrylate layer.
7. The method for preparing a PVC protective film according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:
a. the non-silicon release layer is prepared by fully mixing and dispersing 90-110 parts by weight of non-silicon release agent and 20-50 parts by weight of isopropanol solution into a release preparation solution; coating the prepared release solution on the smooth surface of a PVC protective film, baking at the temperature of 60-80 ℃ for 30-120 seconds, and curing to form a non-silicon release layer;
b. fully mixing 90-110 parts by weight of a separant and 20-50 parts by weight of purified water until the mixture is completely dispersed to form an isolated solution, coating the isolated solution on the dumb surface of the PVC protective film in the step a, and baking at the temperature of 60-80 ℃ for 30-60 seconds to form an isolated coating;
c. adding 10-40 parts by weight of a diluting solvent for dissolving a curing agent into 0.1-4.0 parts by weight of the curing agent to prepare a curing agent; in addition, fully mixing 90-110 parts by weight of acrylate adhesive and 5-20 parts by weight of diluting solvent until the mixture is completely dispersed into an acrylate solution, adding all the curing agents prepared in the above steps into the acrylate solution obtained in the above steps, fully stirring to obtain an acrylate solution containing the curing agents, coating the acrylate solution containing the curing agents on a fluorine film, and baking at 90-100 ℃ for 30-120 seconds to cure the acrylate solution containing the curing agents on the fluorine film into an acrylate layer; transferring the formed acrylate layer on the fluorine film to the isolation coating through transfer coating equipment to form a four-layer PVC protective film;
d. and d, placing the PVC protective film with the four-layer structure in the step c into a curing room at the temperature of 25-60 ℃ for storing for 48-168 hours to obtain the completely cured PVC protective film.
8. The method for preparing a PVC protective film according to claim 8, characterized in that: the isopropanol solution is formed by mixing isopropanol and purified water; the weight ratio of the isopropanol to the purified water is 1: 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011514235.4A CN112574681A (en) | 2020-12-21 | 2020-12-21 | PVC protective film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011514235.4A CN112574681A (en) | 2020-12-21 | 2020-12-21 | PVC protective film and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112574681A true CN112574681A (en) | 2021-03-30 |
Family
ID=75136305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011514235.4A Pending CN112574681A (en) | 2020-12-21 | 2020-12-21 | PVC protective film and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112574681A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115197649A (en) * | 2022-08-04 | 2022-10-18 | 浙江铭天电子新材料有限公司 | Preparation method of PVC blue film for wafer grinding and scribing substrate |
| CN115287004A (en) * | 2022-04-19 | 2022-11-04 | 广东莱尔新材料科技股份有限公司 | Adhesive tape for processing semiconductor wafer and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100255240A1 (en) * | 2007-11-08 | 2010-10-07 | Lintec Corporation | Release sheet and pressure-sensitive adhesive article |
| CN103562327A (en) * | 2011-05-31 | 2014-02-05 | 电气化学工业株式会社 | Primer composition and adhesive tape |
| CN203429100U (en) * | 2012-12-28 | 2014-02-12 | 佛山佛塑科技集团股份有限公司 | Floor adhesive tape |
| CN107760221A (en) * | 2017-10-25 | 2018-03-06 | 上海固柯胶带科技有限公司 | A kind of UV adhesive tapes and preparation method thereof |
-
2020
- 2020-12-21 CN CN202011514235.4A patent/CN112574681A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100255240A1 (en) * | 2007-11-08 | 2010-10-07 | Lintec Corporation | Release sheet and pressure-sensitive adhesive article |
| CN103562327A (en) * | 2011-05-31 | 2014-02-05 | 电气化学工业株式会社 | Primer composition and adhesive tape |
| CN203429100U (en) * | 2012-12-28 | 2014-02-12 | 佛山佛塑科技集团股份有限公司 | Floor adhesive tape |
| CN107760221A (en) * | 2017-10-25 | 2018-03-06 | 上海固柯胶带科技有限公司 | A kind of UV adhesive tapes and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115287004A (en) * | 2022-04-19 | 2022-11-04 | 广东莱尔新材料科技股份有限公司 | Adhesive tape for processing semiconductor wafer and preparation method thereof |
| CN115197649A (en) * | 2022-08-04 | 2022-10-18 | 浙江铭天电子新材料有限公司 | Preparation method of PVC blue film for wafer grinding and scribing substrate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112574681A (en) | PVC protective film and preparation method thereof | |
| CN111440551A (en) | Flexible silica gel screen protective film and preparation method thereof | |
| CN109749672B (en) | UV curing heat-reducing adhesive and preparation method and application thereof | |
| CN110628355A (en) | Double-sided mucosa reducing film and preparation method thereof | |
| TW201915125A (en) | Adhesive composition and surface-protective film | |
| TW201439260A (en) | Adhesive composition for optical members, adhesive film for optical members, and surface-protective adhesive film | |
| WO2012091283A2 (en) | Adhesive composition for polarizer, and polarizer having same | |
| CN110358465B (en) | High-temperature bearing film for circuit board and manufacturing method thereof | |
| CN113956800A (en) | Viscosity-reducing adhesive composition and preparation method and application thereof | |
| CN114106709A (en) | Optical adhesive for explosion-proof membrane and preparation method thereof | |
| CN104459842A (en) | Optical composite membrane and manufacturing method of optical composite membrane | |
| CN113683994B (en) | Modified cyanate-based adhesive and preparation method thereof | |
| CN113789133A (en) | Double-layer antistatic acrylic protective film and preparation method thereof | |
| CN113480769A (en) | Preparation method of high-temperature-resistant antistatic non-silicon release film | |
| CN112882142A (en) | Friction-resistant light diffusion film and manufacturing method thereof | |
| CN112094594A (en) | UV-cured acrylate pressure-sensitive adhesive, adhesive tape and preparation method thereof | |
| CN109796880B (en) | Crosslinking rubber adhesive, high-bonding-strength damping and silencing adhesive tape applying same and preparation method thereof | |
| KR100587496B1 (en) | Composition of adhesion containing acrylates resin and the use of its | |
| CN115820173B (en) | Glue for die-cutting PET protective film and preparation method of glue | |
| CN113773769B (en) | Adhesive layer, acrylic protective film and preparation method of acrylic protective film | |
| CN112662337A (en) | Non-silicon UV (ultraviolet) anti-adhesion film and preparation method thereof | |
| CN112126006B (en) | Hydrofluoric acid-resistant acrylic resin, preparation method thereof, and pressure-sensitive adhesive tape containing acrylic resin | |
| WO2015102149A1 (en) | Composition for forming resin layer and flexible display substrate using the same | |
| KR101453847B1 (en) | Hydrophilic composition for preparaing optical sheets and optical sheets prepared by using same | |
| CN115772283B (en) | Special anti-static ionization film for OCA optical cement coating and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210330 |
|
| RJ01 | Rejection of invention patent application after publication |