CN108300353A - A kind of TPU protective films and preparation method thereof - Google Patents
A kind of TPU protective films and preparation method thereof Download PDFInfo
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- CN108300353A CN108300353A CN201810115881.XA CN201810115881A CN108300353A CN 108300353 A CN108300353 A CN 108300353A CN 201810115881 A CN201810115881 A CN 201810115881A CN 108300353 A CN108300353 A CN 108300353A
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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
- 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
-
- 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
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
-
- 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
- C09J2475/00—Presence of polyurethane
- C09J2475/006—Presence of polyurethane in the substrate
Abstract
The present invention provides a kind of TPU protective films, including：Peeling layer；It is arranged and uses layer in the stripping layer surface；It is arranged in the cuticular layer using layer surface；It is described to include using layer：Adhesive-layer in the stripping layer surface is set；TPU layer in the viscose glue layer surface is set；Self-repair function layer on the TPU layer surface is set；Hydrophobic oleophobic functional layer in the self-repair function layer surface is set；The ingredient of the hydrophobic oleophobic layer in parts by weight, including：100~200 parts of polymethyl siloxane；1~2 part of crosslinking agent；2~5 parts of curing agent；300~1000 parts of ethyl acetate；500~1500 parts of n-butyl acetate；The cuticular layer is arranged in the hydrophobic oleophobic function layer surface.TPU protective films provided by the invention have the function of good hydrophobic oleophobic and wearability in the case of no warpage.
Description
Technical field
The present invention relates to protection technical field of membrane more particularly to a kind of TPU protective films and preparation method thereof.
Background technology
There is TPU excellent flexibility, good impact resistance can effectively prevent screen fragmentation；Soft TPU simultaneously
Material effectively can be bonded cambered surface and not blistering, can be used for a long time, not affect the appearance.
It is UV glue in one layer of hydrophobic oleophobic of coated on one side of base material that traditional TPU membrane, which does hydrophobic oleophobic processing, but TPU membrane
Material is too soft, and warpage is serious after coating UV glue, is had adverse effect on to subsequent handling, and the wearability of this TPU membrane is poor.
Invention content
In view of this, the purpose of the present invention is to provide a kind of TPU protective films and preparation method thereof, it is provided by the invention
TPU protective films have preferable hydrophobic oleophobic effect, wearability good, and warpage does not occur.
The present invention provides a kind of TPU protective films, the primary structure of TPU protective films provided by the invention is to be using layer
It is convenient for the transport and use of TPU protective films provided by the invention, TPU protective films provided by the invention preferably further include peeling layer
And cuticular layer.
In the present invention, the TPU protective films preferably include：
Peeling layer；
It is arranged and uses layer in the stripping layer surface；
It is arranged in the cuticular layer using layer surface.
In the present invention, the peeling layer is preferably silicone oil release film.In the present invention, the thickness of the peeling layer is preferred
It is 20~100 μm, more preferably 30~80 μm.In the present invention, the silicone oil release film off-type force is preferably 5~20gf, more
Preferably 10~15gf.
In the present invention, described to be preferably included using layer：
Adhesive-layer in the stripping layer surface is set；
TPU layer in the viscose glue layer surface is set；
Self-repair function layer on the TPU layer surface is set；
Hydrophobic oleophobic functional layer in the self-repair function layer surface is set.
In the present invention, the cuticular layer is preferably provided at the hydrophobic oleophobic function layer surface.
In the present invention, the peeling layer act as protecting TPU adhesive-layers, preventing TPU adhesive-layers impaired and tear
Screen can be perfectly bonded by falling stripping film, played the role of one and formed a connecting link.In the present invention, the thickness of the adhesive-layer is preferred
It is 20~100 μm, more preferably 30~80 μm.In the present invention, the ingredient of the adhesive-layer is preferably acrylic resin, more excellent
It is selected as OCA glue (the extraordinary adhesive for being used for cementing transparent optical element) in the present invention, the peeling force of the adhesive-layer is preferred
For 80~200gf.
In the present invention, the TPU layer is the material of main part of protective film in the present invention, has preferable toughness and shock resistance
Property, primarily serve defencive function.In the present invention, the thickness of TPU (thermoplastic polyurethane elastomer rubber) layer is preferably
100~200 μm, more preferably 120~180 μm
In the present invention, the work(for acting as to carry out self-regeneration in object damage of the self-repair function layer
Can, when object scratches, self-repair function material can release, and be repaired automatically to impaired body surface.In this hair
In bright, the thickness of the self-repair function layer is preferably 10~50 μm, more preferably 20~40 μm.In the present invention, it is described from
The ingredient of repair function layer is preferably PU resins (polyurethane resin).
In the present invention, the protective film of the hydrophobic oleophobic functional layer acting as making in the present invention has hydrophobic oleophobic work(
Energy.In the present invention, 1 μm of the preferred ＜ of the thickness of the hydrophobic oleophobic functional layer, more preferably 0.2~0.8 μm, most preferably
0.4~0.6 μm.In the present invention, the ingredient of the hydrophobic oleophobic functional layer is preferably included with parts by weight agent：
100~200 parts of polymethyl siloxane；
1~2 part of crosslinking agent；
2~5 parts of curing agent；
300~1000 parts of ethyl acetate；
500~1500 parts of n-butyl acetate.
In the present invention, the polymethyl siloxane is the main component of hydrophobic oleophobic layer；The polymethyl siloxane
Parts by weight are preferably 100~200 parts, more preferably 120~180 parts, most preferably 140~160 parts.
In the present invention, the crosslinking agent act as being crosslinked silane resin system.The present invention is to the crosslinking
The type of agent and source do not have special limitation, such as commercially available using silane crosslinker well known to those skilled in the art
The product of commercially available YZ-85A models.In the present invention, the parts by weight of the crosslinking agent are preferably 1~1.8 part.
In the present invention, the curing agent is preferably platinum curing agent.In the present invention, the parts by weight of the curing agent
Preferably 2~3 parts.The present invention does not have the type of the curing agent and source special limitation, using those skilled in the art
The product of commercially available YZ-82B models such as can be used in well known silica gel curing agent.
Crosslinking agent and curing agent of the present invention are Zhuo 8260 Hes of YOZHO forever that Yong Zhuo Science and Technology Ltd.s provide
The product of 8210 models, wherein crosslinking agent are the product of YZ-85A models, and curing agent is the product of YZ-82B models.
In the present invention, the parts by weight of the ethyl acetate are preferably 400~800 parts, more preferably 500~600 parts.
In the present invention, the parts by weight of the n-butyl acetate are preferably 600~1300 parts, more preferably 700~1000 parts.At this
In invention, the ethyl acetate and n-butyl acetate are solvent, and the mass ratio of the ethyl acetate and n-butyl acetate is preferably
(1~3):(3~10), more preferably (1.5~2.5):(4~8), most preferably 2:(5~6).
In the present invention, the mass ratio of the solvent and polymethyl siloxane is (8~40):(1~3), more preferably (10
~35)：(1.5~2.5), most preferably (20~25)：2.In the present invention, the solvent can also be toluene, gasoline, butanone
Deng preferably ethyl acetate and n-butyl acetate.
In the present invention, the cuticular layer preferably includes glue-line and substrate layer, and the substrate layer is by glue-line and above-mentioned dredges
Water oleophobic functional layer is bonded.In the present invention, the ingredient of the glue-line is preferably acrylic glue.In the present invention, described
The thickness of glue-line is preferably 3~15 μm, more preferably 5~12 μm, most preferably 8~10 μm.In the present invention, the substrate layer
Material be preferably PET (polyethylene terephthalate), OPP (Biaxially oriented polypropylene) or PC (makrolon).
In the present invention, the preparation method of the TPU protective films described in above-mentioned technical proposal is preferably：
Using TPU membrane as TPU layer；
Viscose glue is coated in the lower surface of the TPU membrane, obtains adhesive-layer；
It is bonded stripping film in the viscose glue layer surface, obtains peeling layer；
Self-repair resin is coated in the upper surface of the TPU membrane, obtains self-repair function layer；
Hydrophobic oleophobic feed liquid is coated in the self-repair function layer surface, obtains hydrophobic oleophobic functional layer；
It is bonded protective film in the hydrophobic oleophobic function layer surface, cuticular layer is formed, obtains TPU protective films.
In the present invention, the TPU membrane can be the TPU membrane that commercially available upper and lower surface carries stripping film；The stripping film
Preferably PET stripping films.In the present invention, the TPU membrane preferably includes：
TPU base materials；
Stripping film in the TPU substrate upper surfaces is set；
Stripping film in TPU base materials lower surface is set.
The present invention preferably tears the stripping film of the TPU substrate upper surfaces off before the coating viscosity glue of TPU membrane surface, described
Last layer processing procedure film is applied in the surfaces TPU for tearing stripping film off using glue, and the base material of processing procedure film can be in PET, PVC, PC, PP, OPP
Any one, preferably PET.In the present invention, the glue on processing procedure film can be organic siliconresin, acrylic resin, polyurethane
Resin, preferably organic siliconresin.In the present invention, the peeling force of processing procedure film and steel plate is preferably 1~10gf.
Processing procedure film is bonded in the TPU substrate upper surfaces by the present invention.In the present invention, in the TPU substrate upper surfaces
Paste processing procedure film the stretching acting as avoiding between TPU and PET it is excessive can not carry out subsequent production, stripping film PET and TPU dries
Dyestripping power becomes tight after roasting, is changed by removing PET and covers processing procedure film, and processing procedure film will not become tight with TPU bakings.In the present invention, described
The coating thickness of silica gel is preferably 10~50 μm, more preferably 15~45 μm.In the present invention, the processing procedure film is production
Process or transport in play protection product a kind of transitional function membrane material, material used can be PET, PVC, PC,
Any one in PE, PP, OPP.In the present invention, the thickness of the processing procedure film is preferably 20~100 μm, more preferably 40~
80μm.In the present invention, the thickness of the processing procedure film needs that TPU layer is allowed to have certain deflection not curled, it is preferred to use above-mentioned
The processing procedure film of thickness.In the present invention, the peeling force between the processing procedure film and TPU base materials is preferably TPU base materials and its following table
0.1~0.5 times of peeling force between the stripping film in face, with ensure to ensure when tearing the PET of lower surface off will not be by processing procedure film
It tears up and, while the peeling layer for the semi-finished product being prepared will not be torn off when tearing processing procedure film off.
In the present invention, of the invention preferably by the stripping of the lower surfaces TPU after the TPU substrate upper surfaces are bonded processing procedure film
Film removes, and viscose glue is coated in the lower surface of the TPU base materials.In the present invention, the technique of the coating viscose glue is preferably slit
Formula is coated with, and stripping film overlay film is then carried out photocuring in adhesive surface, forms adhesive-layer in stripping layer surface, the present invention uses
Ultraviolet curing process can lead to not carry out subsequent production to avoid TPU and PET stretchings are excessive, and stripping film TPU and PET toasts dyestripping
Power change is tightly since temperature causes, and photocuring glue does not have to use hot setting, the temperature of wherein Philips's lamp generate it is lower,
It can avoid the above problem.In the present invention, lamps and lanterns used in the photocuring are preferably Philips's lamp, and the power of the photocuring is excellent
It is selected as 60~80W, more preferably 65~75W；Lamps and lanterns are preferably 5~20cm at a distance from stripping film in the Light Curing,
More preferably 10~15cm.In the present invention, the energy in the Light Curing is preferably 500~1000 joules, more preferably
It is 600~900 joules.In the present invention, the ingredient of the viscose glue and coating thickness and adhesive layer described in above-mentioned technical proposal
Ingredient and consistency of thickness, details are not described herein.In the present invention, the ingredient of the stripping film and thickness and above-mentioned technical proposal
The ingredient and consistency of thickness of the peeling layer, details are not described herein.
The present invention is before the TPU membrane upper surface coats self-repair resin preferably by the system of the TPU substrate upper surfaces
Journey film removes, and then coats self-repair resin in the TPU substrate upper surfaces.In the present invention, the coating self-repair resin
Method be preferably any one in scraper, slit or dimple.In the present invention, the ingredient of the self-repair resin and coating
The ingredient and consistency of thickness of thickness and self-repair function layer described in above-mentioned technical proposal, details are not described herein.
In the present invention, oven for solidifying is crossed after the self-repair function layer surface coats hydrophobic oleophobic feed liquid, is dredged
Water oleophobic functional layer.In the present invention, the ingredient Yu coating thickness of the hydrophobic oleophobic feed liquid are dredged with described in above-mentioned technical proposal
The ingredient and consistency of thickness of water oleophobic functional layer, details are not described herein.
In the present invention, the preparation method of the protective film is preferably：
It is coated with glue in substrate surface, obtains protective film.
In the present invention, substrate layer and glue-line described in the ingredient and above-mentioned technical proposal of the base material and glue at split-phase
Together；The thickness of the base material is consistent with substrate layer described in above-mentioned technical proposal and bondline thickness with the coating thickness of glue, herein
It repeats no more.
In the present invention, the peeling force between the protective layer and hydrophobic oleophobic functional layer is preferably 5~15gf, more preferably
5~10gf.
Compared with prior art, self-repair function layer and hydrophobic oleophobic functional layer is arranged in the present invention in TPU layer, the present invention
The main component of middle hydrophobic oleophobic functional layer is silicone oil, and smaller be arranged of contraction of silicone oil will not cause sticking up for TPU when in TPU layer
It is bent and make TPU layer that there is good hydrophobic oleophobic effect, and the self-repair function layer in the present invention can repair it is tiny
It scratches, improves the wearability of hydrophobic oleophobic functional layer, so that TPU protective films provided by the invention is had in the case of no warpage good
Good hydrophobic oleophobic function and wearability.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structural schematic diagram for the TPU protective films that the embodiment of the present invention 1 is prepared.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Raw materials used following embodiment of the present invention is commercial goods, and the crosslinking agent used in following embodiment of the present invention is forever
The product for the YZ-85A models that tall and erect Science and Technology Ltd. provides, curing agent are the YZ-82B models that Yong Zhuo Science and Technology Ltd.s provide
Product.
Embodiment 1
The PET stripping films of TPU membrane upper surface of the upper and lower surface with PET stripping films are torn off, in the TPU base materials of exposing
Upper surface covers the processing procedure film that a layer thickness is 50 μm, and the peeling force between processing procedure film and TPU base materials is TPU base materials and lower surface
0.2 times of peeling force between PET stripping films.
Tear the PET stripping films of TPU membrane lower surface off again.And use slit coating technique coating thickness viscous for 50 μm of height
OCA glue is covered with the PET silicone oil stripping films that thickness is 50 μm in film surface, then Philips's lamp is used to carry out photocuring, light is solid
The power of Philips's lamp is 70W during change, and lamp is 10cm away from the distance between stripping film, and the energy in Light Curing is
800 joules, the peeling force between OCA adhesive-layers and PET stripping films is 3~5gf.
Then it tears the above-mentioned processing procedure film for being pasted onto TPU substrate layers upper surface off, then uses scraper in TPU substrate upper surfaces
Mode is coated with the PU resins that a layer thickness is 20 μm, forms self-repair function layer.
Use the mode coating thickness that dimple is coated with for 0.2 μm of hydrophobic oleophobic feed liquid in the self-repair function layer surface
Cure afterwards by 120 DEG C of oven dried, forms hydrophobic oleophobic functional layer；The hydrophobic oleophobic feed liquid in parts by weight, including
100 parts of polymethyl siloxane, 1.5 parts of crosslinking agent, 2 parts of curing agent, 300 parts of ethyl acetate and 700 parts of acetic acid are just
Butyl ester.
The acrylic glue for being 15 μm in 75 μm of PET base material surface coating thickness, passes through acrylic glue by the PET base material
Be attached in hydrophobic oleophobic functional layer, obtain TPU protective films, the peeling force between PET base material and hydrophobic oleophobic functional layer be 7~
8gf。
The structure for the TPU protective films that the embodiment of the present invention 1 is prepared is as shown in Figure 1, include：Silicone oil type film, setting exist
The high adhesive-layer of the release film surface of silicone oil；TPU base materials in the high viscose glue layer surface are set；It is arranged in the TPU bases
The self-repair function layer on material surface；Hydrophobic oleophobic functional layer in the self-repair function layer surface is set；Setting is dredged described
The low viscous acrylic of water oleophobic function layer surface；PET base material on the low viscous acrylic layer surface is set.
Embodiment 2
The PET stripping films of TPU membrane upper surface of the upper and lower surface with PET stripping films are torn off, in the TPU base materials of exposing
Upper surface covers the processing procedure film that a layer thickness is 80 μm, and the peeling force between processing procedure film and TPU base materials is TPU base materials and lower surface
0.3 times of peeling force between PET stripping films.
Tear the PET stripping films of TPU membrane lower surface off again.And use slit coating technique coating thickness viscous for 60 μm of height
OCA glue is covered with the PET silicone oil stripping films that thickness is 36 μm in film surface, then Philips's lamp is used to carry out photocuring, light is solid
The power of Philips's lamp is 70W during change, and lamp is 10cm away from the distance between stripping film, and the energy in Light Curing is
800 joules, the peeling force between OCA adhesive-layers and PET stripping films is 3~5gf.
Then it tears the above-mentioned processing procedure film for being pasted onto TPU substrate layers upper surface off, then uses scraper in TPU substrate upper surfaces
Mode is coated with the PU resins that a layer thickness is 10 μm, forms self-repair function layer.
Use the mode coating thickness that dimple is coated with for 0.2 μm of hydrophobic oleophobic feed liquid in the self-repair function layer surface
Cure afterwards by 120 DEG C of oven dried, forms hydrophobic oleophobic functional layer；The hydrophobic oleophobic feed liquid in parts by weight, including
100 parts of polymethyl siloxane, the curing agent of 1.5 parts of 2 parts of crosslinking agent, 300 parts of ethyl acetate and the positive fourth of 500 parts of acetic acid
Ester.
The acrylic glue for being 15 μm in 75 μm of PET base material surface coating thickness, passes through acrylic glue by the PET base material
Be attached in hydrophobic oleophobic functional layer, obtain TPU protective films, the peeling force between PET base material and hydrophobic oleophobic functional layer be 7~
8gf。
Embodiment 3
The PET stripping films of TPU membrane upper surface of the upper and lower surface with PET stripping films are torn off, in the TPU base materials of exposing
Upper surface covers the processing procedure film that a layer thickness is 50 μm, and the peeling force between processing procedure film and TPU base materials is TPU base materials and lower surface
0.5 times of peeling force between PET stripping films.
Tear the PET stripping films of TPU membrane lower surface off again.And use slit coating technique coating thickness viscous for 50 μm of height
OCA glue is covered with the PET silicone oil stripping films that thickness is 50 μm in film surface, then Philips's lamp is used to carry out photocuring, light is solid
The power of Philips's lamp is 70W during change, and lamp is 10cm away from the distance between stripping film, and the energy in Light Curing is
800 joules, the peeling force between OCA adhesive-layers and PET stripping films is 3~5gf.Then it tears off and above-mentioned is pasted onto TPU substrate layers
Then the processing procedure film of upper surface uses scraper mode to be coated with a layer thickness as 50 μm of PU resins, is formed in TPU substrate upper surfaces
Self-repair function layer.
Use the mode coating thickness that dimple is coated with for 0.2 μm of hydrophobic oleophobic feed liquid in the self-repair function layer surface
Cure afterwards by 120 DEG C of oven dried, forms hydrophobic oleophobic functional layer；The hydrophobic oleophobic feed liquid in parts by weight, including
100 parts of polymethyl siloxane, 1.5 parts of crosslinking agent, 2 parts of curing agent, 600 parts of ethyl acetate and 600 parts of acetic acid are just
Butyl ester.
The acrylic glue for being 15 μm in 75 μm of PET base material surface coating thickness, passes through acrylic glue by the PET base material
Be attached in hydrophobic oleophobic functional layer, obtain TPU protective films, the peeling force between PET base material and hydrophobic oleophobic functional layer be 7~
8gf。
The TPU protective films that the embodiment of the present invention is prepared are tested for the property, test method and test result are such as
Shown in table 1, table 1 is the performance test results of TPU protective films prepared by the embodiment of the present invention.
The performance test results of TPU protective films prepared by 1 embodiment of the present invention of table
As seen from the above embodiment, the present invention provides a kind of TPU protective films, including：Peeling layer；It is arranged in the peeling layer
Surface uses layer；It is arranged in the cuticular layer using layer surface；It is described to include using layer：It is arranged in the stripping layer surface
Adhesive-layer；TPU layer in the viscose glue layer surface is set；Self-repair function layer on the TPU layer surface is set；Setting exists
The hydrophobic oleophobic functional layer of the self-repair function layer surface；The ingredient of the hydrophobic oleophobic layer in parts by weight, including：100
~200 parts of polymethyl siloxane；1~2 part of crosslinking agent；2~5 parts of curing agent；300~1000 parts of ethyl acetate；500
~1500 parts of n-butyl acetate；The cuticular layer is arranged in the hydrophobic oleophobic function layer surface.TPU provided by the invention is protected
Cuticula has the function of good hydrophobic oleophobic and wearability in the case of no warpage.
Claims (8)
1. a kind of TPU protective films, including use layer；
It is described to include using layer：
Adhesive-layer；
TPU layer in the viscose glue layer surface is set；
Self-repair function layer on the TPU layer surface is set；
Hydrophobic oleophobic functional layer in the self-repair function layer surface is set；
The ingredient of the hydrophobic oleophobic layer in parts by weight, including：
100~200 parts of polymethyl siloxane；
1~2 part of crosslinking agent；
2~5 parts of curing agent；
300~1000 parts of ethyl acetate；
500~1500 parts of n-butyl acetate.
2. TPU protective films according to claim 1, which is characterized in that the TPU protective films further include peeling layer；It is described
Peeling layer is silicone oil release film；The thickness of the peeling layer is 20~100 μm.
3. TPU protective films according to claim 1, which is characterized in that the ingredient of the adhesive-layer is acrylic resin；Institute
The thickness for stating adhesive-layer is 20~100 μm.
4. TPU protective films according to claim 1, which is characterized in that the thickness of the TPU layer is 100~200 μm.
5. TPU protective films according to claim 1, which is characterized in that the ingredient of the self-repair function layer is PU resins；
The thickness of the self-repair function layer is 10~50 μm.
6. TPU protective films according to claim 1, which is characterized in that 1 μm of the thickness ＜ of the hydrophobic oleophobic layer.
7. TPU protective films according to claim 1, which is characterized in that the TPU protective films further include cuticular layer；It is described
Cuticular layer includes：Glue-line and substrate layer, the substrate layer are bonded by glue-line and the hydrophobic oleophobic functional layer.
8. TPU protective films according to claim 7, which is characterized in that the ingredient of the glue-line is acrylic glue；
The material of the substrate layer is PET, OPP or PC.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111732889A (en) * | 2019-03-25 | 2020-10-02 | 天津大学青岛海洋技术研究院 | Preparation method of organic silicon hydrophobic coating |
| CN113201158A (en) * | 2021-04-29 | 2021-08-03 | 江西昊泽光学膜科技有限公司 | TPU protective film, TPU base film and preparation method thereof |
| US11708469B2 (en) | 2020-12-07 | 2023-07-25 | Saint-Gobain Performance Plastics Corporation | Composite film and methods of forming a composite film |
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| CN111732889A (en) * | 2019-03-25 | 2020-10-02 | 天津大学青岛海洋技术研究院 | Preparation method of organic silicon hydrophobic coating |
| US11708469B2 (en) | 2020-12-07 | 2023-07-25 | Saint-Gobain Performance Plastics Corporation | Composite film and methods of forming a composite film |
| CN113201158A (en) * | 2021-04-29 | 2021-08-03 | 江西昊泽光学膜科技有限公司 | TPU protective film, TPU base film and preparation method thereof |
| CN113201158B (en) * | 2021-04-29 | 2022-12-13 | 江西昊泽光学膜科技有限公司 | TPU (thermoplastic polyurethane) protective film and preparation method thereof |
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