CN110628067A - Release film with ultra-light release force and preparation method thereof - Google Patents
Release film with ultra-light release force and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
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- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- 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
- C09D201/00—Coating compositions based on unspecified macromolecular compounds
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- 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
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2400/00—Characterised by the use of unspecified polymers
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention discloses a release film with ultra-light release force and a preparation method thereof. The invention has good compatibility with solvent, easy dispersion after dissolution, no precipitation, uniform coating, good release effect, recyclable solvent, high chemical crosslinking density, strong adhesive force between the release layer and the film base layer, and avoids the generation of electrostatic sparks in the production process.
Description
Technical Field
The invention relates to the technical field of release films, in particular to a release film with ultra-light release force and a preparation method thereof.
Background
The release film is a product which is made of PET, BOPP, PE, PC, PS and CPP as base materials and has the characteristic of low surface energy on the surface and adjustable peeling force between the release film and an adhesive tape. The release film has the characteristics of smooth surface, high cleanliness, stable subsequent processing dimension, adjustable transparency and color, and wide selectable range of the thickness of the film and the type of the base material. The characteristics of the release film can be utilized to develop the deep processing of parts in the optical and electronic fields, thereby being suitable for more and more automatic production process in the field.
At present, the existing release film has some defects, for example; the existing release film has poor compatibility with a solvent, is not easy to disperse after being dissolved, is easy to generate precipitate, has poor coating uniformity, has relatively common release effect, can not be recycled, has low chemical crosslinking density, has weak adhesive force between a release layer and a film base layer, and easily generates electrostatic spark in the production process.
Disclosure of Invention
The invention aims to provide a release film with ultra-light release force and a preparation method thereof, and solves the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the release film with ultra-light release force comprises a film base layer, wherein a silicon oil layer is coated on the outer surface of the film base layer, and a release layer is coated on the outer surface of the silicon oil layer.
In a preferred embodiment of the present invention, the film base layer is made of polyethylene.
As a preferred embodiment of the present invention, the raw material of the silicone oil layer includes silicone oil and antistatic powder.
As a preferred embodiment of the present invention, the release layer comprises the following raw materials in parts by weight: 5-7 parts by mass of carbamate; 1-1.5 parts by mass of polyvinyl alcohol; 2-5 parts of amino ester; 15-25 parts by mass of toluene; 5-10 parts of cross-linking agent; 6-8 parts of an anchoring agent; 7-9 parts of a curing agent; 2-5 parts by mass of silica particles; 5-10 parts by mass of a surfactant; the resin is 50-80 parts by mass.
As a preferred embodiment of the present invention, the release layer comprises the following raw materials in parts by weight: 7 parts of a cross-linking agent; 6 parts of an anchoring agent; 8 parts of curing agent; 4 parts by mass of silica particles; 9 parts by mass of a surfactant; the resin was 75 parts by mass.
As a preferred embodiment of the present invention, the release layer comprises the following raw materials in parts by weight: 5 parts by mass of carbamate; 1.5 parts by mass of polyvinyl alcohol; amino ester is 3 parts by mass; 17 parts by mass of toluene; 7 parts of a cross-linking agent; 6 parts of an anchoring agent; 8 parts of curing agent; 4 parts by mass of silica particles; 9 parts by mass of a surfactant; the resin was 75 parts by mass.
In a preferred embodiment of the present invention, the antistatic powder is one or more of a mixture of polysulfonic acid-based compound, ethoxylated aliphatic alkylamine, alkyl sulfonic acid-based compound, polythiophene-based compound, nickel powder, copper powder, silver powder, carbon nanotube particles, or quaternary phosphonium salt particles.
In a preferred embodiment of the present invention, the anchoring agent is a viscous anchoring adhesive material prepared from an unsaturated polyester resin, a curing agent, an accelerator and an auxiliary material in a certain ratio.
As a preferred embodiment of the present invention, the preparation method of the release film with ultra-light release force comprises the following steps:
a. weighing the raw materials in parts by weight;
b. b, after the step a is finished, putting the antistatic powder and the silicone oil into a mixer to be uniformly mixed, wherein the mixing temperature is 25-30 ℃, the mixing time is 15-29min, and putting the mixed raw materials into a container A for later use;
c. b, after the step B is finished, putting the carbamate, the polyvinyl alcohol, the amino ester, the toluene, the resin and the silica particles into a mixer for mixing, when the raw materials are mixed into a thick state, the mixing time is 20-30min, adding the crosslinking agent, the anchoring agent, the curing agent and the surfactant into the mixer for mixing, wherein the mixing temperature is 40-50 ℃, the mixing time is 30-50min, and after the raw materials are mixed, putting the raw materials into a container B for later use;
d. after the step c is finished, coating the mixed raw materials in the container A on the film base layer, and precuring, wherein the curing temperature is 30-40 ℃, the curing time is 5-10min, and a silicon oil layer is formed on the film base layer;
e. and d, after the step d is finished, coating the raw materials mixed in the container B on the silicon oil layer by a connecting line type coating method, forming a release layer on the silicon oil layer, and performing thermal curing treatment on the coated release layer, wherein the curing temperature is 95-125 ℃, and the curing time is 5-10 min.
In a preferred embodiment of the present invention, the mixer in step c is an integrated mixer, the stirring rod during stirring is a double helix stirring rod, and the heater during heating is a high frequency induction heater.
Compared with the prior art, the invention has the following beneficial effects:
the invention has good compatibility with solvent, easy dispersion after dissolution, no precipitation, uniform coating, good release effect, recyclable solvent, high chemical crosslinking density, strong adhesive force between the release layer and the film base layer, and avoids the generation of electrostatic sparks in the production process.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a flow chart of a release film with ultra-light release force and a preparation method thereof.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1, the present invention provides a technical solution: the release film with ultra-light release force comprises a film base layer, wherein a silicon oil layer is coated on the outer surface of the film base layer, and a release layer is coated on the outer surface of the silicon oil layer.
Furthermore, the film base layer is made of polyethylene.
Further, the raw materials of the silicon oil layer comprise silicon oil and antistatic powder.
Further, the release layer comprises the following raw materials in parts by weight: 5-7 parts by mass of carbamate; 1-1.5 parts by mass of polyvinyl alcohol; 2-5 parts of amino ester; 15-25 parts by mass of toluene; 5-10 parts of cross-linking agent; 6-8 parts of an anchoring agent; 7-9 parts of a curing agent; 2-5 parts by mass of silica particles; 5-10 parts by mass of a surfactant; the resin is 50-80 parts by mass.
Further, the release layer comprises the following raw materials in parts by weight: 7 parts of a cross-linking agent; 6 parts of an anchoring agent; 8 parts of curing agent; 4 parts by mass of silica particles; 9 parts by mass of a surfactant; the resin was 75 parts by mass.
Further, the release layer comprises the following raw materials in parts by weight: 5 parts by mass of carbamate; 1.5 parts by mass of polyvinyl alcohol; amino ester is 3 parts by mass; 17 parts by mass of toluene; 7 parts of a cross-linking agent; 6 parts of an anchoring agent; 8 parts of curing agent; 4 parts by mass of silica particles; 9 parts by mass of a surfactant; the resin was 75 parts by mass.
Further, the antistatic powder is one or a mixture of a plurality of polysulfonic acid compounds, ethoxylated aliphatic alkylamine, alkyl sulfonic acid compounds, polythiophene compounds, nickel powder, copper powder, silver powder, carbon nanotube particles or quaternary phosphonium salt particles.
Furthermore, the anchoring agent is a viscous anchoring adhesive material prepared from unsaturated polyester resin, a curing agent, an accelerant and auxiliary materials according to a certain proportion.
Further, the preparation method of the release film with ultra-light release force comprises the following preparation steps:
a. weighing the raw materials in parts by weight;
b. b, after the step a is finished, putting the antistatic powder and the silicone oil into a mixer to be uniformly mixed, wherein the mixing temperature is 25-30 ℃, the mixing time is 15-29min, and putting the mixed raw materials into a container A for later use;
c. b, after the step B is finished, putting the carbamate, the polyvinyl alcohol, the amino ester, the toluene, the resin and the silica particles into a mixer for mixing, when the raw materials are mixed into a thick state, the mixing time is 20-30min, adding the crosslinking agent, the anchoring agent, the curing agent and the surfactant into the mixer for mixing, wherein the mixing temperature is 40-50 ℃, the mixing time is 30-50min, and after the raw materials are mixed, putting the raw materials into a container B for later use;
d. after the step c is finished, coating the mixed raw materials in the container A on the film base layer, and precuring, wherein the curing temperature is 30-40 ℃, the curing time is 5-10min, and a silicon oil layer is formed on the film base layer;
e. and d, after the step d is finished, coating the raw materials mixed in the container B on the silicon oil layer by a connecting line type coating method, forming a release layer on the silicon oil layer, and performing thermal curing treatment on the coated release layer, wherein the curing temperature is 95-125 ℃, and the curing time is 5-10 min.
Further, the mixer in the step c adopts an integrated stirring and heating machine, the stirring rod during stirring adopts a double-helix stirring rod, and the heater during heating adopts a high-frequency induction heater.
Example one
The release layer comprises the following raw materials in parts by weight: 7 parts of a cross-linking agent; 6 parts of an anchoring agent; 8 parts of curing agent; 4 parts by mass of silica particles; 9 parts by mass of a surfactant; the resin was 75 parts by mass.
The preparation steps are as follows:
a. weighing the raw materials in parts by weight;
b. b, after the step a is finished, putting the antistatic powder and the silicone oil into a mixer to be uniformly mixed, wherein the mixing temperature is 25-30 ℃, the mixing time is 15-29min, and putting the mixed raw materials into a container A for later use;
c. b, after the step B is finished, putting the carbamate, the polyvinyl alcohol, the amino ester, the toluene, the resin and the silica particles into a mixer for mixing, when the raw materials are mixed into a thick state, the mixing time is 20-30min, adding the crosslinking agent, the anchoring agent, the curing agent and the surfactant into the mixer for mixing, wherein the mixing temperature is 40-50 ℃, the mixing time is 30-50min, and after the raw materials are mixed, putting the raw materials into a container B for later use;
d. after the step c is finished, coating the mixed raw materials in the container A on the film base layer, and precuring, wherein the curing temperature is 30-40 ℃, the curing time is 5-10min, and a silicon oil layer is formed on the film base layer;
e. and d, after the step d is finished, coating the raw materials mixed in the container B on the silicon oil layer by a connecting line type coating method, forming a release layer on the silicon oil layer, and performing thermal curing treatment on the coated release layer, wherein the curing temperature is 95-125 ℃, and the curing time is 5-10 min.
Example two
The release layer comprises the following raw materials in parts by weight: 5 parts by mass of carbamate; 1.5 parts by mass of polyvinyl alcohol; amino ester is 3 parts by mass; 17 parts by mass of toluene; 7 parts of a cross-linking agent; 6 parts of an anchoring agent; 8 parts of curing agent; 4 parts by mass of silica particles; 9 parts by mass of a surfactant; the resin was 75 parts by mass.
The preparation steps are as follows:
a. weighing the raw materials in parts by weight;
b. b, after the step a is finished, putting the antistatic powder and the silicone oil into a mixer to be uniformly mixed, wherein the mixing temperature is 25-30 ℃, the mixing time is 15-29min, and putting the mixed raw materials into a container A for later use;
c. b, after the step B is finished, putting the carbamate, the polyvinyl alcohol, the amino ester, the toluene, the resin and the silica particles into a mixer for mixing, when the raw materials are mixed into a thick state, the mixing time is 20-30min, adding the crosslinking agent, the anchoring agent, the curing agent and the surfactant into the mixer for mixing, wherein the mixing temperature is 40-50 ℃, the mixing time is 30-50min, and after the raw materials are mixed, putting the raw materials into a container B for later use;
d. after the step c is finished, coating the mixed raw materials in the container A on the film base layer, and precuring, wherein the curing temperature is 30-40 ℃, the curing time is 5-10min, and a silicon oil layer is formed on the film base layer;
e. and d, after the step d is finished, coating the raw materials mixed in the container B on the silicon oil layer by a connecting line type coating method, forming a release layer on the silicon oil layer, and performing thermal curing treatment on the coated release layer, wherein the curing temperature is 95-125 ℃, and the curing time is 5-10 min.
The data parameters of the conventional release film are as follows:
| test items | Compatibility | Release effect | Chemical crosslink density | Adhesion force |
| Parameter index | Is poor | In general | Is lower than | Weak (weak) |
Example a release film data parameters table 2 is as follows:
| test items | Compatibility | Release effect | Chemical crosslink density | Adhesion force |
| Parameter index | In general | Good effect | In general | In general |
Example two release film data parameters table 3 is as follows:
| test items | Compatibility | Release effect | Chemical crosslink density | Adhesion force |
| Parameter index | Good effect | Superior food | Good effect | High strength |
In summary, the data in tables 1, 2 and 3 are compared to obtain that the release film has good compatibility with the solvent, is easy to disperse after dissolution, does not generate precipitate, is uniformly coated, has good release effect, can recycle the solvent, has high chemical crosslinking density and strong adhesive force between the release layer and the film base layer, and also avoids the generation of electrostatic sparks in the production process.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides an ultralight is from type membrane of type force which characterized in that: the film comprises a film base layer, wherein a silicon oil layer is coated on the outer surface of the film base layer, and a release layer is coated on the outer surface of the silicon oil layer.
2. The release film with ultra-light release force according to claim 1, wherein: the film base layer is made of polyethylene.
3. The release film with ultra-light release force according to claim 1, wherein: the raw materials of the silicone oil layer comprise silicone oil and antistatic powder.
4. The release film with ultra-light release force according to claim 1, wherein: the release layer comprises the following raw materials in parts by weight: 5-7 parts by mass of carbamate; 1-1.5 parts by mass of polyvinyl alcohol; 2-5 parts of amino ester; 15-25 parts by mass of toluene; 5-10 parts of cross-linking agent; 6-8 parts of an anchoring agent; 7-9 parts of a curing agent; 2-5 parts by mass of silica particles; 5-10 parts by mass of a surfactant; the resin is 50-80 parts by mass.
5. The release film with ultra-light release force according to claim 4, wherein: the release layer comprises the following raw materials in parts by weight: 7 parts of a cross-linking agent; 6 parts of an anchoring agent; 8 parts of curing agent; 4 parts by mass of silica particles; 9 parts by mass of a surfactant; the resin was 75 parts by mass.
6. The release film with ultra-light release force according to claim 4, wherein: the release layer comprises the following raw materials in parts by weight: 5 parts by mass of carbamate; 1.5 parts by mass of polyvinyl alcohol; amino ester is 3 parts by mass; 17 parts by mass of toluene; 7 parts of a cross-linking agent; 6 parts of an anchoring agent; 8 parts of curing agent; 4 parts by mass of silica particles; 9 parts by mass of a surfactant; the resin was 75 parts by mass.
7. The release film with ultra-light release force according to claim 4, wherein: the antistatic powder is one or a mixture of a plurality of polysulfonic acid compounds, ethoxylated aliphatic alkylamine, alkyl sulfonic acid compounds, polythiophene compounds, nickel powder, copper powder, silver powder, carbon nano tube particles or quaternary phosphonium salt particles.
8. The release film with ultra-light release force according to claim 4, wherein: the anchoring agent is a viscous anchoring adhesive material prepared from unsaturated polyester resin, a curing agent, an accelerant and auxiliary materials according to a certain proportion.
9. The method for preparing the release film with ultra-light release force according to claim 1, which is characterized in that: the preparation steps are as follows:
a. weighing the raw materials in parts by weight;
b. b, after the step a is finished, putting the antistatic powder and the silicone oil into a mixer to be uniformly mixed, wherein the mixing temperature is 25-30 ℃, the mixing time is 15-29min, and putting the mixed raw materials into a container A for later use;
c. b, after the step B is finished, putting the carbamate, the polyvinyl alcohol, the amino ester, the toluene, the resin and the silica particles into a mixer for mixing, when the raw materials are mixed into a thick state, the mixing time is 20-30min, adding the crosslinking agent, the anchoring agent, the curing agent and the surfactant into the mixer for mixing, wherein the mixing temperature is 40-50 ℃, the mixing time is 30-50min, and after the raw materials are mixed, putting the raw materials into a container B for later use;
d. after the step c is finished, coating the mixed raw materials in the container A on the film base layer, and precuring, wherein the curing temperature is 30-40 ℃, the curing time is 5-10min, and a silicon oil layer is formed on the film base layer;
e. and d, after the step d is finished, coating the raw materials mixed in the container B on the silicon oil layer by a connecting line type coating method, forming a release layer on the silicon oil layer, and performing thermal curing treatment on the coated release layer, wherein the curing temperature is 95-125 ℃, and the curing time is 5-10 min.
10. The method for preparing the release film with ultra-light release force according to claim 9, is characterized in that: and c, adopting a stirring and heating integrated machine as the mixer in the step c, adopting a double-helix stirring rod as a stirring rod during stirring, and adopting a high-frequency induction heater as a heater during heating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910845861.2A CN110628067A (en) | 2019-09-09 | 2019-09-09 | Release film with ultra-light release force and preparation method thereof |
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| CN201910845861.2A CN110628067A (en) | 2019-09-09 | 2019-09-09 | Release film with ultra-light release force and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113277224A (en) * | 2021-05-31 | 2021-08-20 | 嘉兴市金荣科技股份有限公司 | Ultra-light release film with release force |
| CN113306878A (en) * | 2021-05-31 | 2021-08-27 | 嘉兴市金荣科技股份有限公司 | Low-cost heavy release film |
-
2019
- 2019-09-09 CN CN201910845861.2A patent/CN110628067A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113277224A (en) * | 2021-05-31 | 2021-08-20 | 嘉兴市金荣科技股份有限公司 | Ultra-light release film with release force |
| CN113306878A (en) * | 2021-05-31 | 2021-08-27 | 嘉兴市金荣科技股份有限公司 | Low-cost heavy release film |
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