CN113386440A - Heavy release type release film with smooth silicone oil surface and production process thereof - Google Patents
Heavy release type release film with smooth silicone oil surface and production process thereof Download PDFInfo
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- CN113386440A CN113386440A CN202110703318.6A CN202110703318A CN113386440A CN 113386440 A CN113386440 A CN 113386440A CN 202110703318 A CN202110703318 A CN 202110703318A CN 113386440 A CN113386440 A CN 113386440A
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- 229920002545 silicone oil Polymers 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 239000010410 layer Substances 0.000 claims description 116
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 39
- 239000003921 oil Substances 0.000 claims description 39
- 239000010703 silicon Substances 0.000 claims description 39
- 229910052710 silicon Inorganic materials 0.000 claims description 39
- 238000002156 mixing Methods 0.000 claims description 31
- 239000000203 mixture Substances 0.000 claims description 25
- 239000003292 glue Substances 0.000 claims description 24
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 18
- 229920002635 polyurethane Polymers 0.000 claims description 18
- 239000004814 polyurethane Substances 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 18
- 238000000227 grinding Methods 0.000 claims description 12
- -1 polyethylene terephthalate Polymers 0.000 claims description 12
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 12
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910021536 Zeolite Inorganic materials 0.000 claims description 9
- 239000013543 active substance Substances 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 239000002518 antifoaming agent Substances 0.000 claims description 9
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 9
- 239000006258 conductive agent Substances 0.000 claims description 9
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 9
- 239000010439 graphite Substances 0.000 claims description 9
- 229910002804 graphite Inorganic materials 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000010457 zeolite Substances 0.000 claims description 9
- 229910052681 coesite Inorganic materials 0.000 claims description 8
- 229910052906 cristobalite Inorganic materials 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052682 stishovite Inorganic materials 0.000 claims description 8
- 229910052905 tridymite Inorganic materials 0.000 claims description 8
- 238000013035 low temperature curing Methods 0.000 claims description 6
- 238000003892 spreading Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 5
- 239000012790 adhesive layer Substances 0.000 claims description 4
- 238000004821 distillation Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/21—Anti-static
Landscapes
- Laminated Bodies (AREA)
Abstract
The invention discloses a heavy release film with a smooth silicone oil surface and a production process thereof, and belongs to the technical field of release films.
Description
Technical Field
The invention relates to a release film, in particular to a heavy release film with a smooth silicone oil surface, and also relates to a production process of the release film, in particular to a production process of the heavy release film with the smooth silicone oil surface, belonging to the technical field of release films.
Background
Release films are films whose surface energy is differentiated, and release films are not sticky or slightly sticky after being contacted with a particular material under limited conditions.
The smoothness of the outer side of the release film in the prior art is not enough, so that the release film is not comfortable to touch and has a certain astringent feeling, static electricity is easily generated by a silicone oil surface in the prior art, the dust is adsorbed on the release film, and the smooth heavy release film with the silicone oil surface and the production process thereof are designed to optimize the problems.
Disclosure of Invention
The invention mainly aims to provide a heavy release type release film with a smooth silicone oil surface and a production process thereof.
The purpose of the invention can be achieved by adopting the following technical scheme:
the utility model provides a smooth heavy release type of silicon oil face is from type membrane, includes silicon oil face jacket layer subassembly, first antistatic layer and second antistatic layer have been laid respectively to the inboard top of silicon oil face jacket layer subassembly and bottom, the supporting layer has been laid between first antistatic layer and the second antistatic layer, silicon oil face jacket layer subassembly includes first silicon oil face, second silicon oil face and arc silicon oil face, first silicon oil face has been laid at the top of first antistatic layer, second silicon oil face has been laid to the bottom of second antistatic layer, first silicon oil face and the shaping of second silicon oil face tip one day have arc silicon oil face.
Preferably, the support layer is made of polyethylene terephthalate.
Preferably, the silicone oil surface sleeve component is prepared by mixing polyethylene terephthalate and SiO.
Preferably, the first antistatic layer comprises a bottom glue layer and a surface glue layer which are laminated.
Preferably, the primer layer comprises polyurethane, calcium carbonate, a conductive agent and an adhesive which are mixed.
Preferably, the surface glue layer is formed by mixing polyurethane, zeolite powder, an active agent, a defoaming agent and conductive graphite.
A production process of a heavy release type release film with a smooth silicone oil surface comprises the following steps:
step 1: weighing polyethylene terephthalate and SiO2And clear water, and weighing polyethylene terephthalate and SiO2Introducing clear water into the mixing and stirring box to perform high-temperature mixing and stirring to obtain a primary mixture of the silicone oil surface jacket layer;
step 2: putting the primary mixture of the silicone oil surface covering layer after high-temperature mixing into a strip-ring-shaped groove grinding tool for high-temperature heating distillation to remove clear water in the primary mixture of the silicone oil surface covering layer after high-temperature mixing;
and step 3: taking out the primary mixture of the silicone oil surface covering layer solidified at low temperature in the strip-ring-shaped groove grinding tool to form a silicone oil surface covering layer assembly;
and 4, step 4: obtaining polyurethane, calcium carbonate, a conductive agent and an adhesive, putting the polyurethane, the calcium carbonate, the conductive agent and the adhesive into a mixing and stirring box, mixing and stirring at a high temperature, and obtaining a primer layer primary mixture;
and 5: spreading the mixed primary mixture of the bottom glue layer on a plate-type grinding tool for low-temperature curing to form the bottom glue layer;
step 6: obtaining polyurethane, zeolite powder, an active agent, a defoaming agent and conductive graphite, putting the polyurethane, the zeolite powder, the active agent, the defoaming agent and the conductive graphite into a mixing and stirring box, mixing and stirring at high temperature, and obtaining a primary mixture of a surface adhesive layer;
and 7: spreading the mixed primary mixture of the surface glue layer on a plate-type grinding tool for low-temperature curing to form a surface glue layer;
and 8: paving the surface glue layer and the bottom glue layer together to form a first antistatic layer and a second antistatic layer;
and step 9: and laying the first antistatic layer and the second antistatic layer on the inner side of the silicone oil surface covering layer component, and then laying the supporting layer between the first antistatic layer and the second antistatic layer to form the release film.
Preferably, wherein the temperature in step 1 is 800-.
Preferably, the low temperature of the step 3, the step 5 and the step 7 is between-100 ℃ and-50 ℃.
The invention has the beneficial technical effects that:
according to the heavy release type film with the smooth silicone oil surface and the production process thereof, the function that the bottom and the top of the film can be smooth is realized by adopting the annularly wrapped silicone oil surface sleeve layer assembly, so that the outer surface and the inner surface are smooth when the film is used, the problem of dust adsorption caused by static electricity is solved when the film is used through the first antistatic layer and the second antistatic layer, and the problem of dust adsorption caused by electronic equipment when the film is used in electronic equipment is also solved.
Drawings
Fig. 1 is an overall perspective view of an apparatus of a preferred embodiment of a silicone oil surface-smooth heavy release film and a production process thereof according to the present invention.
In the figure: 1-a first silicon oil surface, 2-a second silicon oil surface, 3-a first antistatic layer, 4-a supporting layer, 5-a second antistatic layer and 6-an arc-shaped silicon oil surface.
Detailed Description
In order to make the technical solutions of the present invention more clear and definite for those skilled in the art, the present invention is further described in detail below with reference to the examples and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
Example one
As shown in fig. 1, the smooth heavy release type membrane of silicon oil face that this embodiment provided, including silicon oil face jacket layer subassembly, first antistatic layer 3 and second antistatic layer 5 have been laid respectively to the inboard top of silicon oil face jacket layer subassembly and bottom, laid supporting layer 4 between first antistatic layer 3 and the second antistatic layer 5, silicon oil face jacket layer subassembly includes first silicon oil face 1, second silicon oil face 2 and arc silicon oil face 6, first silicon oil face 1 has been laid at the top of first antistatic layer 3, second silicon oil face 2 has been laid to the bottom of second antistatic layer 5, first silicon oil face 1 and the 2 tip of second silicon oil face one day shaping have arc silicon oil face 6.
Wherein the silicon oil face jacket layer subassembly that adopts the loop type parcel has realized its bottom and top can be glossy function enough to not only the smooth internal surface of surface is also smooth when using, has realized avoiding the problem of static adsorption dust when using through first antistatic layer 3 and second antistatic layer 5, has also realized avoiding the problem of electronic equipment adsorption dust to the application in using electronic equipment.
In the present embodiment, the support layer 4 is made of polyethylene terephthalate.
In the embodiment, the silicone oil surface covering layer component adopts polyethylene terephthalate and SiO2Mixing and preparing.
In this embodiment, the first antistatic layer 3 includes a primer layer and a topcoat layer laminated together.
In this embodiment, the primer layer includes a mixture of polyurethane, calcium carbonate, a conductive agent, and an adhesive.
In this embodiment, the surface adhesive layer is formed by mixing polyurethane, zeolite powder, an active agent, a defoaming agent and conductive graphite.
Example two
A production process of a heavy release type release film with a smooth silicone oil surface comprises the following steps:
step 1: weighing polyethylene terephthalate and SiO2And clear water, and weighing polyethylene terephthalate and SiO2Introducing clear water into the mixing and stirring box to perform high-temperature mixing and stirring to obtain a primary mixture of the silicone oil surface jacket layer;
step 2: putting the primary mixture of the silicone oil surface covering layer after high-temperature mixing into a strip-ring-shaped groove grinding tool for high-temperature heating distillation to remove clear water in the primary mixture of the silicone oil surface covering layer after high-temperature mixing;
and step 3: taking out the primary mixture of the silicone oil surface covering layer solidified at low temperature in the strip-ring-shaped groove grinding tool to form a silicone oil surface covering layer assembly;
and 4, step 4: obtaining polyurethane, calcium carbonate, a conductive agent and an adhesive, putting the polyurethane, the calcium carbonate, the conductive agent and the adhesive into a mixing and stirring box, mixing and stirring at a high temperature, and obtaining a primer layer primary mixture;
and 5: spreading the mixed primary mixture of the bottom glue layer on a plate-type grinding tool for low-temperature curing to form the bottom glue layer;
step 6: obtaining polyurethane, zeolite powder, an active agent, a defoaming agent and conductive graphite, putting the polyurethane, the zeolite powder, the active agent, the defoaming agent and the conductive graphite into a mixing and stirring box, mixing and stirring at high temperature, and obtaining a primary mixture of a surface adhesive layer;
and 7: spreading the mixed primary mixture of the surface glue layer on a plate-type grinding tool for low-temperature curing to form a surface glue layer;
and 8: paving the surface glue layer and the bottom glue layer together to form a first antistatic layer 3 and a second antistatic layer 5;
and step 9: and the first antistatic layer 3 and the second antistatic layer 5 are laid on the inner side of the silicone oil surface covering layer component, and then the support layer 4 is laid between the first antistatic layer 3 and the second antistatic layer 5 to form the release film.
In the present embodiment, the temperature in step 1 is 800-.
In the present example, the low temperature of step 3 and step 5 and step 7 was between-100 ℃ and-50 ℃.
The above description is only for the purpose of illustrating the present invention and is not intended to limit the scope of the present invention, and any person skilled in the art can substitute or change the technical solution of the present invention and its conception within the scope of the present invention.
Claims (9)
1. The utility model provides a smooth heavy release type of silicone oil face is from type membrane which characterized in that: including silicon oil face jacket layer subassembly, first antistatic layer (3) and second antistatic layer (5) have been laid respectively to the inboard top of silicon oil face jacket layer subassembly and bottom, supporting layer (4) have been laid between first antistatic layer (3) and second antistatic layer (5), silicon oil face jacket layer subassembly includes first silicon oil face (1), second silicon oil face (2) and arc silicon oil face (6), first silicon oil face (1) have been laid to the top of first antistatic layer (3), second silicon oil face (2) have been laid to the bottom of second antistatic layer (5), first silicon oil face (1) and second silicon oil face (2) tip one day shaping have arc silicon oil face (6).
2. The heavy release type film with smooth silicone oil surface as claimed in claim 1, wherein: the supporting layer (4) is prepared from polyethylene terephthalate.
3. The heavy release type film with smooth silicone oil surface as claimed in claim 2, characterized in that: the silicone oil surface jacket layer component adopts polyethylene terephthalate and SiO2Mixing and preparing.
4. The heavy release type film with smooth silicone oil surface according to claim 3, characterized in that: first antistatic layer (3) include the bottom glue film and the laminating of surface glue film forms.
5. The heavy release type film with smooth silicone oil surface as claimed in claim 4, wherein: the primer layer is formed by mixing polyurethane, calcium carbonate, a conductive agent and an adhesive.
6. The heavy release type film with smooth silicone oil surface as claimed in claim 5, wherein: the surface glue layer is formed by mixing polyurethane, zeolite powder, an active agent, a defoaming agent and conductive graphite.
7. The production process of the heavy release type release film with the smooth silicone oil surface according to claim 6, characterized in that: the method comprises the following steps:
step 1: weighing polyethylene terephthalate and SiO2And clear water, andweighed polyethylene terephthalate and SiO2Introducing clear water into the mixing and stirring box to perform high-temperature mixing and stirring to obtain a primary mixture of the silicone oil surface jacket layer;
step 2: putting the primary mixture of the silicone oil surface covering layer after high-temperature mixing into a strip-ring-shaped groove grinding tool for high-temperature heating distillation to remove clear water in the primary mixture of the silicone oil surface covering layer after high-temperature mixing;
and step 3: taking out the primary mixture of the silicone oil surface covering layer solidified at low temperature in the strip-ring-shaped groove grinding tool to form a silicone oil surface covering layer assembly;
and 4, step 4: obtaining polyurethane, calcium carbonate, a conductive agent and an adhesive, putting the polyurethane, the calcium carbonate, the conductive agent and the adhesive into a mixing and stirring box, mixing and stirring at a high temperature, and obtaining a primer layer primary mixture;
and 5: spreading the mixed primary mixture of the bottom glue layer on a plate-type grinding tool for low-temperature curing to form the bottom glue layer;
step 6: obtaining polyurethane, zeolite powder, an active agent, a defoaming agent and conductive graphite, putting the polyurethane, the zeolite powder, the active agent, the defoaming agent and the conductive graphite into a mixing and stirring box, mixing and stirring at high temperature, and obtaining a primary mixture of a surface adhesive layer;
and 7: spreading the mixed primary mixture of the surface glue layer on a plate-type grinding tool for low-temperature curing to form a surface glue layer;
and 8: paving the surface glue layer and the bottom glue layer together to form a first antistatic layer (3) and a second antistatic layer (5);
and step 9: and a first antistatic layer (3) and a second antistatic layer (5) are laid on the inner side of the silicone oil surface covering layer component, and then a supporting layer (4) is laid between the first antistatic layer (3) and the second antistatic layer (5) to form a release film.
8. The production process of the heavy release type release film with the smooth silicone oil surface according to claim 7, characterized in that: wherein the temperature in the step 1 is 800-1000 ℃, and the temperature in the step 2 is 1200-1600 ℃.
9. The production process of the heavy release type release film with the smooth silicone oil surface according to claim 8, characterized in that: wherein the low temperature of the step 3, the step 5 and the step 7 is between 100 ℃ below zero and 50 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110703318.6A CN113386440A (en) | 2021-06-24 | 2021-06-24 | Heavy release type release film with smooth silicone oil surface and production process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110703318.6A CN113386440A (en) | 2021-06-24 | 2021-06-24 | Heavy release type release film with smooth silicone oil surface and production process thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106079796A (en) * | 2016-06-29 | 2016-11-09 | 东莞市航达电子有限公司 | The two-sided Anti-static release liner of transparent PET and processing technology thereof |
| CN207523144U (en) * | 2017-10-11 | 2018-06-22 | 盐城杉智光学材料有限公司 | A kind of PU protective films |
| CN210679977U (en) * | 2019-10-09 | 2020-06-05 | 昆山驰诺新材料科技有限公司 | Ultralight CPP is from type membrane |
| CN211165721U (en) * | 2019-09-18 | 2020-08-04 | 深圳市睿华涂布科技有限公司 | Antistatic BOPET coating release film |
-
2021
- 2021-06-24 CN CN202110703318.6A patent/CN113386440A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106079796A (en) * | 2016-06-29 | 2016-11-09 | 东莞市航达电子有限公司 | The two-sided Anti-static release liner of transparent PET and processing technology thereof |
| CN207523144U (en) * | 2017-10-11 | 2018-06-22 | 盐城杉智光学材料有限公司 | A kind of PU protective films |
| CN211165721U (en) * | 2019-09-18 | 2020-08-04 | 深圳市睿华涂布科技有限公司 | Antistatic BOPET coating release film |
| CN210679977U (en) * | 2019-10-09 | 2020-06-05 | 昆山驰诺新材料科技有限公司 | Ultralight CPP is from type membrane |
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