CN116640524A - PU adhesive protection film capable of preventing powder from falling during die cutting - Google Patents
PU adhesive protection film capable of preventing powder from falling during die cutting Download PDFInfo
- Publication number
- CN116640524A CN116640524A CN202310524957.5A CN202310524957A CN116640524A CN 116640524 A CN116640524 A CN 116640524A CN 202310524957 A CN202310524957 A CN 202310524957A CN 116640524 A CN116640524 A CN 116640524A
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- China
- Prior art keywords
- coating
- layer
- protective film
- adhesive
- adhesive protective
- 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
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 27
- 239000000853 adhesive Substances 0.000 title claims abstract description 26
- 239000000843 powder Substances 0.000 title claims abstract description 18
- 238000005520 cutting process Methods 0.000 title abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 98
- 239000011248 coating agent Substances 0.000 claims abstract description 82
- 239000010410 layer Substances 0.000 claims abstract description 63
- 230000001681 protective effect Effects 0.000 claims abstract description 56
- 239000012790 adhesive layer Substances 0.000 claims abstract description 25
- 239000002216 antistatic agent Substances 0.000 claims abstract description 16
- 230000002265 prevention Effects 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000013329 compounding Methods 0.000 claims abstract description 8
- 239000004814 polyurethane Substances 0.000 claims description 89
- 125000005396 acrylic acid ester group Chemical group 0.000 claims description 12
- 239000003292 glue Substances 0.000 claims description 11
- -1 acrylic modified aromatic isocyanate Chemical class 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000000741 silica gel Substances 0.000 claims description 7
- 229910002027 silica gel Inorganic materials 0.000 claims description 7
- 229920000728 polyester Polymers 0.000 claims description 6
- 239000011527 polyurethane coating Substances 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000012948 isocyanate Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 3
- 229920000123 polythiophene Polymers 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 210000000695 crystalline len Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
Classifications
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- 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
- C09J7/29—Laminated material
-
- 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
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
-
- 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
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
Abstract
The invention discloses a PU adhesive protective film free of powder falling during die cutting, which relates to the field of protective films and comprises a wear-resistant layer, an antistatic PU layer, a base material layer, a blue light prevention layer and an adhesive layer which are sequentially stacked from top to bottom, wherein the antistatic PU layer is formed by compounding a PE coating and a PU coating, a plurality of PE coatings and PU coatings are arranged, and the PE coatings and the PU coatings are arranged in a staggered manner. According to the invention, the antistatic PU layer is formed by compounding the PE coating and the PU coating, and the PE coating and the PU coating are compounded with the antistatic agent, so that an antistatic function can be realized, and as the PE coating and the PU coating are compounded in a staggered and overlapped mode, the PE coating is arranged between two adjacent PU coatings, the acting force between molecules of the PU coatings can be reduced, so that the situation that the PU coating is scattered under the influence of die cutting equipment during die cutting can be reduced, and the problem of powder falling of the protective film during die cutting can be solved.
Description
Technical Field
The invention relates to the field of protective films, in particular to a PU adhesive protective film with no powder falling during die cutting.
Background
The PU protective film is a functional protective film which is formed by taking a transparent PET film as a base material, coating polyurethane glue on one side, and attaching a release film on the back side. The optical PU protective film is mainly used for the high-temperature control process protection of liquid crystal panels, the shipment protection of ITO and glass panels, has good adsorptivity, good stability, difficult residual glue, residues, transfer and future protective film markets, the optical PU protective film gradually replaces a silica gel protective film to become the market main force of a touch screen protective film, the touch screen industry adopts an acrylic glue protective film and a silica gel protective film by TP manufacturers, but the acrylic glue and the silica gel protective film always have a plurality of quality problems, such as residual glue, bubbles, fogging, transfer and the like, and the PU protective film is a novel optical protective film product for replacing the acrylic glue protective film and the silica gel protective film, can well solve the problems of residual glue, bubbles, fogging, transfer and the like and has good high-temperature resistance and high-humidity resistance.
The PU protective film is improperly processed in the die cutting process, and various phenomena such as fog, residual glue, bubble marks, dust, dirt and the like are usually caused, so that the technology for processing the protective film is particularly important.
Therefore, it is necessary to solve the above problems by inventing a PU adhesive protective film which is die-cut and does not fall off powder.
Disclosure of Invention
The invention aims to provide a PU adhesive protective film without powder falling during die cutting so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: a PU adhesive protective film without powder falling during die cutting comprises a wear-resistant layer, an antistatic PU layer, a substrate layer, a blue light prevention layer and an adhesive layer which are sequentially stacked from top to bottom;
the antistatic PU layer is formed by compounding a PE coating and a PU coating, a plurality of PE coatings and PU coatings are arranged, the PE coatings and the PU coatings are arranged in a staggered mode, and the thicknesses of the PE coatings and the PU coatings are respectively 1.2 mu m and 0.8 mu m;
the PE coating is a polyvinylidene fluoride coating added with an antistatic agent TM, and the PU coating is a propylene acetate modified aromatic isocyanate-based polyurethane coating or a polyester polyurethane coating added with the antistatic agent TM.
Preferably, the PE coating and the PU coating are both provided with inclined structures, and the inclined angles of the PE coating and the PU coating are 45 degrees.
Preferably, the antistatic agent of the PE coating and the PU coating is added in an amount of 1.5% of the mass of the antistatic agent.
Preferably, the wear-resistant layer is made of one of UV resin, PVC or PP, and the thickness of the wear-resistant layer is 100-150 mu m.
Preferably, the substrate layer is made of one of PE material, PP material or PET material, and the thickness of the substrate layer is 17-75 μm.
Preferably, the blue light prevention layer is an AP blue light prevention film, and the thickness of the blue light prevention layer is 15-40 μm.
Preferably, the adhesive layer is a layer obtained by mixing one or more of acrylic acid ester, polyester acrylic acid ester, polyether acrylic acid ester, polyurethane acrylic acid ester, epoxy acrylic acid ester and polythiophene, and the adhesive layer can also be a layer obtained by mixing one or more of acrylic acid ester, PU adhesive, organic silica gel and epoxy resin.
Preferably, the thickness of the adhesive layer is 100-150 mu m, and the lower surface of the adhesive layer is provided with a release film.
The invention has the technical effects and advantages that:
1. according to the invention, the antistatic PU layer is formed by compounding the PE coating and the PU coating, and the PE coating and the PU coating are compounded with the antistatic agent, so that an antistatic function can be realized;
2. according to the invention, the antistatic PU layer is formed by compounding the PE coating and the PU coating, the PE coating and the PU coating are both of 45-degree inclined structures, and the arrangement of the inclined structures ensures the light transmission effect of the PE coating and the PU coating, so that the problem of powder falling of the protective film during die cutting is solved, and meanwhile, the light transmission effect of the protective film is ensured;
3. according to the invention, the wear-resistant layer is made of one of UV resin, PVC or PP, and is arranged on the outer layer of the protective film, the wear-resistant layer can achieve the protection effect of the antistatic PU layer so as to prolong the service life of the protective film, the blue light-resistant layer is arranged so as to improve the blue light-resistant performance of the protective film, the use experience of a user is improved, the adhesive layer is arranged so that the protective film is conveniently attached to the surface of the screen, and the adhesive layer is made of an adhesive layer which is not adhesive, so that the protective film can be replaced according to actual requirements by the user.
Drawings
FIG. 1 is a schematic cross-sectional view of the overall structure of the present invention.
FIG. 2 is a schematic diagram of an antistatic PU layer structure according to the present invention.
Fig. 3 is an enlarged schematic view of the structure a in fig. 2 according to the present invention.
In the figure: 1. a wear-resistant layer; 2. an antistatic PU layer; 3. a substrate layer; 4. a blue light prevention layer; 5. an adhesive layer; 6. a PE coating; 7. and (3) PU coating.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a PU adhesive protective film without powder falling after die cutting, which is shown in figures 1 to 3, and comprises a wear-resistant layer 1, an antistatic PU layer 2, a substrate layer 3, a blue light prevention layer 4 and an adhesive layer 5 which are sequentially stacked from top to bottom;
specifically, the antistatic PU layer 2 is formed by compounding a PE coating 6 and a PU coating 7, the PE coating 6 and the PU coating 7 are provided with a plurality of PE coatings 6 and PU coatings 7 which are arranged in a staggered manner, the antistatic agent addition amount of the PE coating 6 and the PU coating 7 is 1.5% of the antistatic agent addition amount by mass, and the thicknesses of the PE coating 6 and the PU coating 7 are respectively 1.2 mu m and 0.8 mu m;
more specifically, the PE coating 6 and the PU coating 7 are both provided with inclined structures, and the inclined angles of the PE coating 6 and the PU coating 7 are 45 degrees;
the wear-resistant layer 1 is made of one of UV resin, PVC or PP, the thickness of the wear-resistant layer 1 is 100-150 mu m, the base material layer 3 is made of one of PE, PP or PET, the thickness of the base material layer 3 is 17-75 mu m, the wear-resistant layer 1 is arranged on the outer layer of the protective film, and the wear-resistant layer 1 can achieve the protection effect of the antistatic PU layer so as to prolong the service life of the protective film;
moreover, the blue light prevention layer 4 is set to be an AP blue light prevention film, the thickness of the blue light prevention layer 4 is 15-40 mu m, and the blue light prevention layer 4 can filter high-energy short-wave blue light which can cause serious health threat to eyes, so that the energy blue light is prevented from penetrating through a crystalline lens to reach fundus retina, and the use experience of a user can be improved;
further, the adhesive layer 5 is set as an adhesive layer obtained by mixing one or more of acrylic ester, polyester acrylic ester, polyether acrylic ester, polyurethane acrylic ester, epoxy acrylic ester and polythiophene, the adhesive layer 5 can also be set as an adhesive layer obtained by mixing one or more of acrylic ester, PU adhesive, organic silica gel and epoxy resin, the thickness of the adhesive layer 5 is 100-150 mu m, a release film is arranged on the lower surface of the adhesive layer 5, and the release film can realize protection of the adhesive layer 5 so as to ensure the adhesive effect of the adhesive layer 5 in use;
furthermore, the PE coating 6 is a polyvinylidene fluoride coating added with an antistatic agent TM, the PU coating 7 is an acrylic ester modified aromatic isocyanate polyurethane coating or a polyester polyurethane coating added with the antistatic agent TM, and the antistatic effect of the PE coating 6 and the PU coating 7 is ensured by the astronomical safety of the antistatic agent.
According to the invention, the antistatic PU layer 2 is arranged, so that the antistatic effect of the protective film can be realized, the antistatic PU layer 2 is formed by compounding the PE coating 6 and the PU coating 7, and the PE coating 6 and the PU coating 7 are compounded with antistatic agents, so that the antistatic function can be realized, the PE coating 6 and the PU coating 7 are compounded in a staggered and overlapped mode, the PE coating 6 is arranged between two adjacent PU coatings 7, the acting force between molecules of the PU coatings 7 can be reduced, when the protective film is subjected to die cutting, the die cutting equipment applies cutting stress to the antistatic PU layer 2, at the moment, the PE coating 6 and the PU coating 7 are broken under the action of the cutting stress, and the PU coating 7 is divided into multiple layers by the PE coating 6, so that the acting force between molecules of the PU coating 7 is smaller and the influence of the cutting stress is smaller, so that the molecules of the PU coating 7 are prevented from falling off due to the cutting stress, the situation that the PU coating 7 is scattered due to the influence of die cutting equipment can be reduced when the protective film is subjected to die cutting, and the problem of falling powder when the protective film is subjected to die cutting is solved;
when the anti-blue light protective device is used, the release film below the adhesive layer 5 is torn, then the protective film is aligned and attached to the surface of the screen, and the attachment of the protective film can be completed.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (8)
1. The PU adhesive protective film is characterized by comprising a wear-resistant layer (1), an antistatic PU layer (2), a substrate layer (3), a blue light prevention layer (4) and an adhesive layer (5) which are sequentially stacked from top to bottom;
the antistatic PU layer (2) is formed by compounding a PE coating (6) and a PU coating (7), the PE coating (6) and the PU coating (7) are provided in a plurality, the PE coating (6) and the PU coating (7) are arranged in a staggered manner, and the thicknesses of the PE coating (6) and the PU coating (7) are respectively 1.2 mu m and 0.8 mu m;
the PE coating (6) is arranged as a polyvinylidene fluoride coating added with an antistatic agent TM, and the PU coating (7) is arranged as an acrylic modified aromatic isocyanate-based polyurethane coating or a polyester polyurethane coating added with the antistatic agent TM.
2. The PU adhesive protective film of claim 1, wherein the PU adhesive protective film is die-cut to prevent powder from falling, and further comprising: the PE coating (6) and the PU coating (7) are both of inclined structures, and the inclination angles of the PE coating (6) and the PU coating (7) are 45 degrees.
3. The PU adhesive protective film of claim 1, wherein the PU adhesive protective film is die-cut to prevent powder from falling, and further comprising: the antistatic agent addition amount of the PE coating (6) and the PU coating (7) is 1.5% of the mass of the antistatic agent.
4. The PU adhesive protective film of claim 1, wherein the PU adhesive protective film is die-cut to prevent powder from falling, and further comprising: the wear-resistant layer (1) is made of one of UV resin, PVC or PP, and the thickness of the wear-resistant layer (1) is 100-150 mu m.
5. The PU adhesive protective film of claim 1, wherein the PU adhesive protective film is die-cut to prevent powder from falling, and further comprising: the base material layer (3) is made of one of PE material, PP material or PET material, and the thickness of the base material layer (3) is 17-75 mu m.
6. The PU adhesive protective film of claim 1, wherein the PU adhesive protective film is die-cut to prevent powder from falling, and further comprising: the blue light prevention layer (4) is an AP blue light prevention film, and the thickness of the blue light prevention layer (4) is 15-40 mu m.
7. The PU adhesive protective film of claim 1, wherein the PU adhesive protective film is die-cut to prevent powder from falling, and further comprising: the adhesive layer (5) is a glue layer obtained by mixing one or more of acrylic acid ester, polyester acrylic acid ester, polyether acrylic acid ester, polyurethane acrylic acid ester, epoxy acrylic acid ester and polythiophene, and the adhesive layer (5) can also be a glue layer obtained by mixing one or more of acrylic acid ester, PU glue, organic silica gel and epoxy resin.
8. The PU adhesive protective film of claim 1, wherein the PU adhesive protective film is die-cut to prevent powder from falling, and further comprising: the thickness of the adhesive layer (5) is 100-150 mu m, and a release film is arranged on the lower surface of the adhesive layer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310524957.5A CN116640524A (en) | 2023-05-10 | 2023-05-10 | PU adhesive protection film capable of preventing powder from falling during die cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310524957.5A CN116640524A (en) | 2023-05-10 | 2023-05-10 | PU adhesive protection film capable of preventing powder from falling during die cutting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116640524A true CN116640524A (en) | 2023-08-25 |
Family
ID=87622201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310524957.5A Pending CN116640524A (en) | 2023-05-10 | 2023-05-10 | PU adhesive protection film capable of preventing powder from falling during die cutting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116640524A (en) |
-
2023
- 2023-05-10 CN CN202310524957.5A patent/CN116640524A/en active Pending
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