CN110172307A - The production method of the SRF film of unlocked by fingerprint under a kind of screen for light sensation - Google Patents

The production method of the SRF film of unlocked by fingerprint under a kind of screen for light sensation Download PDF

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Publication number
CN110172307A
CN110172307A CN201910448987.6A CN201910448987A CN110172307A CN 110172307 A CN110172307 A CN 110172307A CN 201910448987 A CN201910448987 A CN 201910448987A CN 110172307 A CN110172307 A CN 110172307A
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fingerprint
srf
masking liquid
film
coating
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Pending
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CN201910448987.6A
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Chinese (zh)
Inventor
余的军
黄业勇
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Shenzhen Asus New Materials Application Technology Co Ltd
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Shenzhen Asus New Materials Application Technology Co Ltd
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Priority to CN201910448987.6A priority Critical patent/CN110172307A/en
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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
    • 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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • 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
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/16—Antifouling paints; Underwater paints
    • C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
    • C09D5/1662—Synthetic film-forming substance
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/16—Antifouling paints; Underwater paints
    • C09D5/1687—Use of special additives
    • 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
    • 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
    • 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
    • C09J1/00—Adhesives based on inorganic constituents
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/255—Polyesters
    • 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
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • 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
    • C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2475/04—Polyurethanes
    • 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
    • C09J2467/00—Presence of polyester
    • C09J2467/006—Presence of polyester in the substrate

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Laminated Bodies (AREA)

Abstract

The production method that the present invention improves the SRF film of unlocked by fingerprint under a kind of screen for light sensation, comprising the following steps: a. by weight, 94-97% aqueous polyurethane and 3-6% fluorochemical additive is mixed, anti-fingerprint masking liquid is obtained；B. by weight, 97-99%UV coating and 1-3% silicon-containing additive are mixed, obtains UV masking liquid；C., anti-fingerprint masking liquid, UV masking liquid are respectively coated on to the top and bottom of SRF basement membrane by disposable double spread technique, solidification masking liquid surface is irradiated by UV lamp after levelling；Wherein, anti-fingerprint masking liquid is cured as anti-fingerprint coating, and UV masking liquid is cured as UV coating；D. it stretches, wind and cuts, obtain SRF film semi-finished product；E. lower surface being applied in UV and doing coating silica gel, silica gel cures to form layer of silica gel, obtains SRF film；Finally in the layer of silica gel following table face paste PET release film of SRF film.Its optical property of SRF film obtained by this method meets the requirement of unlocked by fingerprint under light sensation screen.

Description

The production method of the SRF film of unlocked by fingerprint under a kind of screen for light sensation
Technical field
The present invention relates to a kind of systems of the SRF film of unlocked by fingerprint under thin film technique field more particularly to screen for light sensation Make method.
Background technique
Unlocked by fingerprint function is gradually using in smart phone under light sensation screen.The principle of unlocked by fingerprint function under light sensation screen For the process for starting screen after generating fingerprint recognition through unlike material feedback to mobile phone screen using optical transmission.
Screen protecting film is affixed on mobile phone screen surface, for protecting mobile phone screen.But due to screen protecting film and original-pack hand The optical property of the glass of machine screen is different, therefore screen protecting film will affect the use of unlocked by fingerprint function under light sensation screen.It is main The influence factor wanted has the following:
(1) film light transmittance: the light transmittance of general PET and its PET slice raw material are related, light transmittance between 86%-91%, and The light transmittance of PC, SRF, TAC can reach 90% or more.
(2) rainbow line: light can generate different refractions, hemicrystalline BOPET film when through different thin film dielectrics Due to biaxial tension, crystalline texture cannot keep stable indeformable arrangement and can generate rainbow line phenomenon, and other Material such as PC, SRF, TAC and TPU influence translucent effect because molecular structure then will not generate rainbow line.
The material with preferable translucidus has PC, SRF, TAC and PET on the market at present.But these materials have different Defect: PC is linear molecule, not the orientation of light, and phase difference is low, and the rainbow of light interferes low suitable fingerprint recognition sensitivity It is required that.But PC hardness is low (hardness < 1H), and surface is easy to scratch and influence translucent effect in production.SRF does not have rainbow interference, Tg point is lower, and phase difference is high, requires to post-processing position, and material does not have crystalline texture, and material softer and not scratch-resistant are heated and receive Compression deformation processing bad greatly.TAC excellent optical characteristics, but it is not resistant to water, and material is crisp, surface treatment and processing difficulties.
Therefore, PC, SRF, TAC and common PET are not suitable for alone serving as the safeguard film for cellular phone with unlocked by fingerprint.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of for referring under light sensation screen according to above-mentioned the deficiencies in the prior art The preparation method of the SRF film of line unlock, its optical property of SRF film obtained by this method meet unlocked by fingerprint under light sensation screen Requirement.
Technical scheme is as follows:
Under a kind of screen for light sensation the SRF film of unlocked by fingerprint preparation method the following steps are included:
A. by weight, 94-97% aqueous polyurethane and 3-6% fluorochemical additive are mixed, obtains anti-fingerprint masking liquid；
B. by weight, 97-99%UV coating and 1-3% silicon-containing additive are mixed, obtains UV masking liquid；
C., anti-fingerprint masking liquid, UV masking liquid are respectively coated on to the top and bottom of SRF basement membrane by disposable double spread technique, flowed Solidification masking liquid surface is irradiated by UV lamp after flat；Wherein, anti-fingerprint masking liquid is cured as anti-fingerprint coating, and UV masking liquid is cured as UV painting Layer；
D. it stretches, wind and cuts, obtain SRF film semi-finished product；
E. lower surface being applied in UV and doing coating silica gel, silica gel cures to form layer of silica gel, obtains SRF film；Finally in the silicon of SRF film Glue-line following table face paste PET release film.
Further, fluorochemical additive is polytetrafluoroethylene (PTFE).
Further, UV coating includes acrylic monomer and ultraviolet light triggering curing agent, and silicon-containing additive is nanometer two Silica.
Further, anti-fingerprint coating with a thickness of 3-5um, SRF basement membrane with a thickness of 70-90um, the thickness of UV coating For 2-4um, layer of silica gel with a thickness of 20-30um, PET release film with a thickness of 25-50um.
Compared with prior art, the invention has the following beneficial effects:
(1) SRF basement membrane is one kind of PET film, with the same light transmittance of BOPET, is able to satisfy the light sensation screen of safeguard film for cellular phone The optical property of lower unlocked by fingerprint.Also, since SRF basement membrane is unidirectional tape casting, therefore without BOPET like that because of two-way drawing Extended molecular structure deformation and caused by rainbow line problem.
(2) primary raw material is the anti-fingerprint coating of aqueous polyurethane, can guarantee SRF film light transmittance not less than 90%；And And anti-fingerprint coating makes SRF film outer surface have good hardness (2H/500G, JIS5600), realizes anti-scratch colored function, solution SRF basement membrane material in being used alone of having determined is soft, not scratch-resistant the problem of；Meanwhile anti-fingerprint coating also allows SRF film outer surface With good stain resistance (105 ° of water feeler), anti-fingerprint function is realized；And anti-fingerprint coating can also be for outside SRF film Surface generates lower dynamic friction coefficient (< 0.1) to obtain preferable slide sense of touch.
(3) fluorochemical additive can make anti-fingerprint coated tape not glue function, when avoiding SRF film as screen protecting film There is viscous hand phenomenon.
(4) UV coating primary raw material is acrylic coating, has high saturating, weather-proof, wear-resisting, higher temperature resistant, resistant to many The advantages that product burn into surface gloss is good, easy processing, fit in SRF basement membrane be addressed below SRF basement membrane when being used alone by In high phase difference bring processing loss problem；Also, UV coating has preferable heat resistance, and UV coating will not when being coated with silica gel Contraction distortion has well solved SRF basement membrane when being used alone since its tape casting Tg point is lower during applying silica gel The contraction distortion problem of generation.
(5) silicon-containing additive can improve the adhesive force between UV coating and layer of silica gel；Also, the main component of layer of silica gel For silica, when silicon-containing additive is nano silica, the mutual degrees of fusion of the two can be very good, further improves Adhesive force between UV coating and layer of silica gel；Meanwhile nano silica is in addition to transparent, can also provide preferable wearability and compared with High hardness.
(6) it is processed using disposable double spread technique, processing efficiency and yields greatly improve.
(7) number of plies of SRF film is few, and structure is simple, at low cost.
Detailed description of the invention
Fig. 1 is the SRF membrane structure schematic diagram as made from embodiment.
Appended drawing reference
10-SRF film, 11- anti-fingerprint coating, 12-SRF basement membrane, 13-UV coating, 14- layer of silica gel, 20-PET release film.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with attached drawing Step ground detailed description.
Embodiment provided by the invention, under a kind of screen for light sensation the preparation method of the SRF film of unlocked by fingerprint include with Lower step:
A. by weight, 95% aqueous polyurethane and 5% fluorochemical additive are mixed, obtains anti-fingerprint masking liquid；Wherein, fluorine-containing addition Agent is polytetrafluoroethylene (PTFE).
B. by weight, 98%UV coating and 2% silicon-containing additive are mixed, obtains UV masking liquid；Wherein, UV coating includes There are acrylic monomer and ultraviolet light triggering curing agent, silicon-containing additive is nano silica.
C., anti-fingerprint masking liquid, UV masking liquid are respectively coated on to the top and bottom of SRF basement membrane by disposable double spread technique, Solidification masking liquid surface is irradiated by UV lamp after levelling；Wherein, anti-fingerprint masking liquid is cured as anti-fingerprint coating, and UV masking liquid is cured as UV coating.
D. it stretches, wind and cuts, obtain SRF film semi-finished product.
E. lower surface being applied in UV and doing coating silica gel, silica gel cures to form layer of silica gel, obtains SRF film；Finally in SRF film Layer of silica gel following table face paste PET release film.
As shown in Figure 1, SRF film 10 includes the anti-fingerprint coating 11 being successively bonded from top to bottom, SRF basement membrane 12, UV Coating 13 and layer of silica gel 14.Post PET release film 20 in 13 lower surface of layer of silica gel of SRF film 10.The thickness of anti-fingerprint coating For 4um, SRF basement membrane with a thickness of 80um, UV coating with a thickness of 3um, layer of silica gel with a thickness of 25um, the thickness of PET release film Degree is 35um.
When SRF film is used as cellphone screen film: PET release film being torn, the layer of silica gel of SRF film is affixed on mobile phone On screen.
Anti-fingerprint coating and SRF basement membrane are tested, below table (one) is obtained:
Anti-fingerprint coating SRF basement membrane
Water feeler 105° 70°
Pencil hardness (JIS5600) 2H/500G B-HB
Total light transmittance 93% 90%
By above table (one) it can be concluded that
(1) SRF basement membrane light transmittance is outstanding, is able to satisfy the optical property of unlocked by fingerprint under the light sensation screen of safeguard film for cellular phone.
(2) anti-fingerprint coating hardness is high, allows SRF film to realize anti-scratch colored function, solves SRF basement membrane in being used alone Material is soft, not scratch-resistant the problem of.
(3) anti-fingerprint coating water feeler is big, and SRF film outer surface is also allowed to have good stain resistance, realizes anti-fingerprint Function.
The UV coating and SRF basement membrane are tested, below table (two) are obtained:
UV coating SRF basement membrane
Pencil hardness (JIS5600) H/500G B-HB
Dyne value 40 38
By above table (two) it can be concluded that
(1) UV coating hardness and dyne value are higher, fit in SRF basement membrane and SRF basement membrane is addressed below when being used alone due to height Phase difference bring processing loss problem.
The above disclosure is only the preferred embodiments of the present invention, cannot limit right model of the invention certainly with this It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.

Claims (4)

1. the preparation method of the SRF film of unlocked by fingerprint under a kind of screen for light sensation, which comprises the following steps:
A. by weight, 94-97% aqueous polyurethane and 3-6% fluorochemical additive are mixed, obtains anti-fingerprint masking liquid；
B. by weight, 97-99%UV coating and 1-3% silicon-containing additive are mixed, obtains UV masking liquid；
C., anti-fingerprint masking liquid, UV masking liquid are respectively coated on to the top and bottom of SRF basement membrane by disposable double spread technique, flowed Solidification masking liquid surface is irradiated by UV lamp after flat；Wherein, anti-fingerprint masking liquid is cured as anti-fingerprint coating, and UV masking liquid is cured as UV painting Layer；
D. it stretches, wind and cuts, obtain SRF film semi-finished product；
E. lower surface being applied in UV and doing coating silica gel, silica gel cures to form layer of silica gel, obtains SRF film；Finally in the silicon of SRF film Glue-line following table face paste PET release film.
2. according to claim 1 under a kind of screen for light sensation the SRF film of unlocked by fingerprint preparation method, feature exists In: fluorochemical additive is polytetrafluoroethylene (PTFE).
3. according to claim 1 under a kind of screen for light sensation the SRF film of unlocked by fingerprint preparation method, feature exists In: UV coating includes acrylic monomer and ultraviolet light triggering curing agent, and silicon-containing additive is nano silica.
4. according to claim 1 under a kind of screen for light sensation the SRF film of unlocked by fingerprint preparation method, feature exists In: anti-fingerprint coating with a thickness of 3-5um, SRF basement membrane with a thickness of 70-90um, UV coating with a thickness of 2-4um, layer of silica gel With a thickness of 20-30um, PET release film with a thickness of 25-50um.
CN201910448987.6A 2019-05-28 2019-05-28 The production method of the SRF film of unlocked by fingerprint under a kind of screen for light sensation Pending CN110172307A (en)

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CN111690332A (en) * 2020-05-29 2020-09-22 深圳市象形科技有限公司 High-definition hydrophobic screen protective film and application thereof
WO2021208609A1 (en) * 2020-04-15 2021-10-21 Oppo广东移动通信有限公司 Protective film for display screen, preparation method therefor, and electronic device

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CN109762479A (en) * 2019-02-28 2019-05-17 东莞市赛越新材料科技有限公司 Unlocked by fingerprint protective film and forming method under Multi-layer composite screen

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021208609A1 (en) * 2020-04-15 2021-10-21 Oppo广东移动通信有限公司 Protective film for display screen, preparation method therefor, and electronic device
CN111690332A (en) * 2020-05-29 2020-09-22 深圳市象形科技有限公司 High-definition hydrophobic screen protective film and application thereof
CN111690332B (en) * 2020-05-29 2021-04-20 深圳市象形科技有限公司 High-definition hydrophobic screen protective film and application thereof

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