CN104608445B - A multi-layer elastic composite film having functions of bending shape maintenance and impact resistance and a preparing method thereof - Google Patents
A multi-layer elastic composite film having functions of bending shape maintenance and impact resistance and a preparing method thereof Download PDFInfo
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- CN104608445B CN104608445B CN201410796376.8A CN201410796376A CN104608445B CN 104608445 B CN104608445 B CN 104608445B CN 201410796376 A CN201410796376 A CN 201410796376A CN 104608445 B CN104608445 B CN 104608445B
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- 238000005452 bending Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title abstract description 11
- 239000002131 composite material Substances 0.000 title abstract description 10
- 238000012423 maintenance Methods 0.000 title abstract 4
- 238000000576 coating method Methods 0.000 claims abstract description 165
- 239000011248 coating agent Substances 0.000 claims abstract description 150
- 239000000853 adhesive Substances 0.000 claims abstract description 91
- 230000001070 adhesive effect Effects 0.000 claims abstract description 91
- 210000004379 membrane Anatomy 0.000 claims description 155
- 239000012528 membrane Substances 0.000 claims description 155
- 239000010410 layer Substances 0.000 claims description 118
- 239000010408 film Substances 0.000 claims description 58
- 239000000463 material Substances 0.000 claims description 42
- 239000011241 protective layer Substances 0.000 claims description 42
- 239000003292 glue Substances 0.000 claims description 36
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 23
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 23
- 230000035939 shock Effects 0.000 claims description 23
- 210000002469 basement membrane Anatomy 0.000 claims description 22
- -1 polyethylene terephthalate Polymers 0.000 claims description 21
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 18
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 18
- 239000010409 thin film Substances 0.000 claims description 18
- 239000004743 Polypropylene Substances 0.000 claims description 16
- 239000004800 polyvinyl chloride Substances 0.000 claims description 14
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 14
- 238000007711 solidification Methods 0.000 claims description 14
- 230000008023 solidification Effects 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 13
- 238000002834 transmittance Methods 0.000 claims description 13
- 239000003595 mist Substances 0.000 claims description 12
- 229920001684 low density polyethylene Polymers 0.000 claims description 11
- 239000004702 low-density polyethylene Substances 0.000 claims description 11
- 229920001155 polypropylene Polymers 0.000 claims description 10
- 239000004814 polyurethane Substances 0.000 claims description 10
- 238000007761 roller coating Methods 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 8
- 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
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
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- 229920000297 Rayon Polymers 0.000 claims description 5
- 239000000499 gel Substances 0.000 claims description 5
- 239000002356 single layer Substances 0.000 claims description 5
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 3
- 150000005690 diesters Chemical class 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims description 2
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 claims description 2
- 150000004651 carbonic acid esters Chemical class 0.000 claims 1
- 229920006264 polyurethane film Polymers 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000009826 distribution Methods 0.000 description 6
- 229920002799 BoPET Polymers 0.000 description 5
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005253 cladding Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000003440 styrenes Chemical class 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- ZSDJVGXBJDDOCD-UHFFFAOYSA-N benzene dioctyl benzene-1,2-dicarboxylate Chemical compound C(C=1C(C(=O)OCCCCCCCC)=CC=CC1)(=O)OCCCCCCCC.C1=CC=CC=C1 ZSDJVGXBJDDOCD-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
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
- 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
- B32B7/06—Interconnection of layers permitting easy separation
-
- 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
- B32B27/36—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
- 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
- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
-
- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
-
- 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
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a multi-layer elastic composite film having functions of bending shape maintenance and impact resistance and a preparing method thereof. The composite film has a function of cambered surface covering shape maintenance, a function of elastic vibration absorption and a function of resisting violent impact. The composite film comprises a film protecting layer, a using layer and a stripping layer from top to bottom. The film protecting layer is disposed on the using layer. The stripping layer is disposed under the using layer. The using layer comprises a UV coating, an uppermost transparent film, an upper adhesive coating, a first soft transparent film, a first adhesive coating, a second soft transparent film, a second adhesive coating, and a lowest soft transparent film from top to bottom. The composite film can be firmly adhered to a screen, is not liable to rebound, and has good cambered surface fitting and shape maintenance capability, thus achieving cambered surface edge covering.
Description
Technical field
The present invention relates to the display screen protecting film such as a kind of portable mobile termianl, specifically, be particularly to
A kind of guarantor's type that bends that has for globoidal glass edge display screen, and the multilayer elastic of shock resistance function is compound
Thin film.
Background technology
Touch screen is seen everywhere in daily life, and touch screen protective film the most more and more occurs in
Around us.Along with quickly popularizing of the intelligent mobile terminal such as smart mobile phone, panel computer, each on market
The configuration of class mobile phone, panel computer is multifarious, and the wherein issue of iPhone6 allows the mobile phone of cambered surface screen cause
The extensive concern of people.Cambered surface screen specifically refers to cambered surface screen glass edge and uses cambered surface, and screen is still
Pure-surface.For such cambered surface edge glass, traditional non-full version screen protecting film, it is impossible to process circular arc
Corner, can only be a little bit smaller toward inside contracting patch, thus causes and has one section between the edge of protecting film and fuselage
Gap, unsightly and affect use feel, though and use the total incapsulation of dead-soft material to be coated with, but can only
Protection mobile phone is not scratched, and this film itself easily grinds flower, the most damaged, film process is loaded down with trivial details.With
Upper two class protecting film products, all cannot have both protection screen damage under severe conditions simultaneously and keep mobile phone
The function carrying out cambered surface cladding attractive in appearance.Therefore, market is needed badly one and can be applicable to cambered surface screen, possess arc
Bread covers guarantor's type and elastic shock sucking function, is resistant to the screen multilayer elastic laminated film element of severe impact.
Summary of the invention
The invention aims to overcome the deficiency of existing protecting film, it is provided that one has bending guarantor's type and resists
Multilayer elastic laminated film of impact function and preparation method thereof, possesses cambered surface cladding guarantor's type and elastic absorbing merit
Can, it is resistant to the multilayer elastic laminated film element of severe impact function, cambered surface screen of more preferably fitting, effectively
The probability that portable mobile terminal display screen assembly is impaired.
For reaching above-mentioned purpose, the present invention uses below scheme:
A kind of have bending guarantor's type and the multilayer elastic laminated film of shock resistance function, includes from top to down:
Cuticular layer, use layer and peel ply, use and be provided with cuticular layer on layer, and use layer has peel ply,
Layer is used to include from top to down: UV coating, the superiors' transparent membrane, upper strata adhesive coating, middle some
Layer soft transparent membrane and be placed in the adhesive coating below every layer of soft transparent membrane, the soft thin transparent of the bottom
Film；Introducing cuticular layer on UV coating, cuticular layer includes from top to down: protective layer basement membrane, protective layer glue
Layer；Introduce protective layer glue-line on UV coating, on protective layer glue-line, be provided with protective layer basement membrane；The bottom
Bottom adhesive coating is introduced between soft transparent membrane and peel ply.
Adhesive coating adhesion strength entirety presents " the highest, middle low；On centre higher than lower " feature；No
Different glue and coating processes parameter is selected according to the diversity of each layer adhesion strength with adhesive coating, adhesion strength
Determine main basis: 1. use layer composite membrane produce whole interior after cambered surface elasticity of flexure deformation tensile stress and
Distribution of the compressive stress, 2. the Young's modulus of different single thin film base materials is different, and deformation varies in size, and causes monolayer
The diversity of base material internal stress distribution.Wherein, from top to down, the requirement of upper strata adhesive coating adhesion strength is
0.2kg/25mm～1.5kg/25mm, if middle dried layer adhesive coating adhesion strength requires to be 0.05
Kg/25mm～0.2kg/25mm, and it is higher than the adhesion strength of lower layer to be placed in upper layer, middle adjacent two glue
The adhesion strength difference 0.03kg/25mm of gel coating, the requirement of bottom adhesive coating layer adhesion strength is
0.18kg/25mm～1.4kg/25mm.
Wherein in some embodiments, if described upper strata adhesive coating, centre dried layer adhesive coating, bottom are viscous
The thickness of gel coating is 10～100 μm；The optional silica gel of adhesive coating material, acrylic glue, OCA optical cement,
PU glue, pressure sensitive adhesive；If middle dried layer adhesive coating includes: the first adhesive coating, the second adhesive coating；
Upper strata adhesive coating adhesion strength is 0.2kg/25mm～1.5kg/25mm, the first adhesive coating adhesion
Power is 0.08kg/25mm～0.2kg/25mm, the second adhesive coating adhesion strength be 0.05kg/25mm～
0.18kg/25mm, bottom adhesive coating adhesion strength is 0.18kg/25mm～1.4kg/25mm.
Wherein in some embodiments, described the superiors transparent membrane thickness is 18～88 μm, and the superiors are transparent
Foamed film material is polyethylene terephthalate (PET), Low Density Polyethylene (LDPE), polypropylene
Thin film (PP), polyvinyl chloride film (PVC), Merlon (PC) etc., wherein with poly terephthalic acid
Glycol ester (PET) is preferred material；Also may be used between second adhesive coating and the soft transparent membrane of the bottom
To introduce the soft transparent membrane of third layer, the 3rd adhesive coating, reach 4 layers of soft transparent membrane structure, the 3rd
Adhesive coating adhesion strength is 0.02kg/25mm～0.18kg/25mm.If middle dried layer adhesive coating uses PU
Glue.
Wherein in some embodiments, if the described centre soft transparent membrane of dried layer, the soft thin transparent of the bottom
These 3 layers of soft transparent membranes of film are characterised by that single-layer flexible transparent membrane thickness is 30～300 μm, and material is optional
Thermoplastic polyurethane (TPU), thermoplastic polyester elastomer (TPEE), styrene analog thermoplastic elastomer (benzene
Vinyl TPES) etc., wherein with thermoplastic polyurethane (TPU) for first-selected, hardness preferably 20～86HA；
If the middle soft transparent membrane of dried layer includes: the soft transparent membrane of ground floor, the soft transparent membrane of the second layer；
The superiors' transparent membrane is optical-grade transparent thin film, and light transmittance is more than 95%, and mist degree is less than 3%；Described
The soft transparent membrane of ground floor, the soft transparent membrane of the second layer, the bottom soft transparent membrane light transmittance are more than
85%, mist degree is less than 10%.
Wherein in some embodiments, described UV coating layer thickness is 2～30 μm, and UV coating material is epoxy third
Olefin(e) acid ester paint；Described peel ply selects transparent membrane, and its light transmittance is more than 92%, and mist degree is less than 5%, stripping
Absciss layer thickness 25～100 μm；Preferably, the thickness of peel ply is 30 μm；Peel ply membrane material is for gathering benzene
Dioctyl phthalate second diester (PET), Low Density Polyethylene (LDPE), polypropylene film (PP), polrvinyl chloride
Thin film (PVC), Merlon (PC) etc., wherein headed by polyethylene terephthalate (PET)
Material selection.
Wherein in some embodiments, protective layer basement membrane thickness 25～100 μm, its light transmittance is more than 92%,
Mist degree is less than 5%, preferably 30 μm；Protective layer basal lamina material be polyethylene terephthalate (PET),
Merlon (PC), polypropylene film (PP), polyvinyl chloride film (PVC) etc., wherein with PET
For preferred material；Basement membrane protective layer bondline thickness 5～30 μm, preferably 8 μm.
A kind of preparation method of multilayer elastic laminated film with bending guarantor's type and shock resistance function, including with
Lower step:
(1), use the coating processes such as bar coating, micro-gravure roller coating, gravure roller coating and spraying coating process upper
State the superiors' transparent membrane upper surface and uniformly coat UV coating, wherein first-selected nick roll coating process；UV
Coating solidifies after drying baker, UV light irradiation, and the UV coating after solidification has certain anti-scratch, resistance to
Effect of friction；Different according to the thickness after film forming, film case hardness can reach 2H～6H；
(2), the another side having been coated with the superiors' transparent membrane of UV coating is coated with upper strata adhesive coating,
Wherein coating process is: scraper for coating, and slit type is coated with, gravure roller coating, convex roller coat cloth etc.；
(3), upper strata adhesive coating drying solidification after, be covered with the soft transparent membrane of ground floor at its another side；
Then changing glue used and coating thickness, the another side at the soft transparent membrane of ground floor is coated with the first viscose glue
Coating, after drying solidification；It is (another that another side at the first adhesive coating encloses the soft transparent membrane of the second layer again
One layer of soft transparent membrane), then the another side at the soft transparent membrane of the second layer is coated with the second adhesive coating,
Under enclose the soft transparent membrane of the bottom；By that analogy, until the soft transparent membrane enclosed reaches to make
Till the transparent membrane number of plies needed for layer；
Wherein in some embodiments, after operation such as, again change glue used and coating thickness, second
The another side of the soft transparent membrane of layer is coated with the second adhesive coating, after drying solidification, at the second adhesive coating
Another side enclose the soft transparent membrane of the bottom again；
(4), finally, at the bottom soft transparent membrane another side barrier coating adhesive coating, then stripping of fitting
Absciss layer；At UV coating coated thereon protective layer glue-line, protective layer basement membrane of fitting on protective layer glue-line.
By the combination of technique above, so that it is curved to use layer to reach to have having of bending guarantor's type and shock resistance function
Bent guarantor's type and the multilayer elastic laminated film element of shock resistance function.
Wherein in some embodiments, described the superiors transparent membrane thickness is 23 μm, and ground floor is soft
Bright film thickness is 68 μm, and the second layer soft transparent membrane thickness is 30 μm, the soft thin transparent of the bottom
Film thickness is 88 μm, and the hardness of the TPU membrane used is 40 ± 5HA.If middle dried layer adhesive coating is adopted
Use PU glue.
Wherein in some embodiments, described upper strata adhesive coating (is arranged at the superiors' transparent membrane and first
Layer soft transparent membrane between) use material be high viscosity acrylic glue, its thickness is 50 μm；It is arranged at
The first adhesive coating between one layer of soft transparent membrane and the soft transparent membrane of the second layer uses material to be PU
Glue, its thickness is 30 μm；It is arranged between the soft transparent membrane of the second layer and the soft transparent membrane of the bottom
Second adhesive coating uses material to be PU glue, and its thickness is 20 μm；It is arranged under the soft transparent membrane of the bottom
The bottom adhesive coating on surface uses material to be special high viscosity silica gel, and its thickness is 20 μm；It is arranged at and goes up most
The UV coating of layer transparent membrane upper surface, thickness is 2～30 μm, preferably 5 μm.
The invention have the benefit that
1, the composite film of the transparent film substrate composition that layer employing soft or hard is different is used, by intermembranous adhesion strength
" the highest, middle low；On centre higher than lower " particular adhesive coating, effectively overcome composite membrane overall
Diversity stress distribution between bending elastic force and each base material so that it is can firmly be pasted on screen and be difficult to resilience,
There is good cambered surface laminating guarantor's type ability, thus realize cambered surface edge cladding.
2, soft transparent membrane is 1～4 layer so that it is possesses the most elastic shock sucking function, is resistant to severe impact,
250 grams of test ball/100 cm height shock-testings, can effectively protect mobile phone watch surface glass in instantaneous impact
Do not rupture.
3, the light transmission having had, light transmittance reaches more than 80%.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the stress envelope of the embodiment of the present invention.
Seeing shown in accompanying drawing 2, in figure, E1 is the superiors' transparent membrane stress envelopes, and E2 is that ground floor is soft
Property transparent membrane stress envelope, E3 is integrated stress scattergram after compound.Stress envelope is fixed by Hooke
Rule σ=Ε ε data represent.
Description of reference numerals:
Protective layer basement membrane 110, protective layer glue-line 120, UV coating 210, the superiors' transparent membrane 220,
Upper strata adhesive coating 230, the soft transparent membrane of ground floor 240, the first adhesive coating 250, the second layer is soft
Property transparent membrane 260, the second adhesive coating 270, the soft transparent membrane of the bottom 280, bottom viscose glue be coated with
Layer 290, peel ply 300.
Detailed description of the invention
By inventive feature, technological means and the specific purposes reached, function can be further appreciated that,
Resolve the advantages and spirit of the present invention, by the present invention is further elaborated by the following examples.
The raw material that the embodiment of the present invention is used is as follows:
Silica gel, acrylic glue, OCA optical cement, PU glue, pressure sensitive adhesive, adding benefit chemical industry purchased from Dongguan City has
Limit company；
Polyethylene terephthalate, Low Density Polyethylene, polypropylene film, polyvinyl chloride film, poly-carbon
Acid esters, purchased from Changxing (Guangzhou) precise dipping company limited；
Thermoplastic polyurethane, thermoplastic polyester elastomer, styrene analog thermoplastic elastomer, purchased from Shanghai day
Liter development of new techniques company limited；
UV coating material: epoxy acrylate coating, purchased from Dongguan City Tian Yi Chemical Co., Ltd..
There is bending guarantor's type and the multilayer elastic laminated film element of shock resistance function, include from top to down: protect
Film layer, use layer and peel ply 300, use and be provided with cuticular layer on layer, and use layer has peel ply 300,
Use layer include from top to down: UV coating 210, the superiors' transparent membrane 220, upper strata adhesive coating 230,
The soft transparent membrane of ground floor the 240, first adhesive coating 250, the soft transparent membrane of the second layer 260, second
The soft transparent membrane of adhesive coating 270, the bottom 280.Cuticular layer includes from top to down: protective layer basement membrane 110,
Protective layer glue-line 120, introduces protective layer glue-line 120, sets on protective layer glue-line 120 on UV coating 210
Matcoveredn basement membrane 110；；Introduce bottom viscose glue between the soft transparent membrane of the bottom 280 and peel ply 300 to be coated with
Layer 290.
In certain embodiments, it is arranged between every two-layer transparent membrane and the soft transparent membrane of the bottom 280
The adhesive coating thickness of lower surface is 10～100 μm.The optional silica gel of adhesive coating material, acrylic glue, OCA
Optical cement, PU glue, pressure sensitive adhesive.
In certain embodiments, above-mentioned adhesive coating adhesion strength entirety presents " the highest, middle low；Middle
On higher than lower " feature；Different adhesive coatings select different glue and coating according to the diversity of each layer adhesion strength
Technological parameter, the main basis of determination of adhesion strength: after 1. using layer composite membrane to produce cambered surface elasticity of flexure deformation
The tensile stress of whole interior and distribution of the compressive stress, 2. the Young's modulus of different single thin film base materials is different, deformation
Vary in size, cause the diversity of single layer of substrate material internal stress distribution.Wherein, from top to down, upper strata is glued
Gel coating 230 adhesion strength requires as 0.2kg/25mm～1.5kg/25mm, the first adhesive coating 250 adhesion strength
Requiring to be 0.08kg/25mm～0.2kg/25mm, the second adhesive coating 270 adhesion strength requirement is
0.05kg/25mm～0.18kg/25mm, bottom adhesive coating 290 adhesion strength require as 0.18kg/25mm～
1.4kg/25mm。
The superiors' transparent membrane 220 transparent membrane thickness is 18～88 μm, and this layer membrane materials is for gathering benzene two
Formic acid second diester (PET), Low Density Polyethylene (LDPE), polypropylene film (PP), polrvinyl chloride are thin
Film (PVC), Merlon (PC) etc., wherein with polyethylene terephthalate (PET) for first-selected
Material.2～4 layers of soft transparent membrane are characterised by that single-layer flexible transparent membrane thickness is 30～300 μm, material
The optional thermoplastic polyurethane of matter (TPU), thermoplastic polyester elastomer (TPEE), styrene analog thermoplastic bullet
Gonosome (phenylethylene TPES) etc., wherein with thermoplastic polyurethane (TPU) for first-selected, hardness preferably 20～
86HA。
UV coating 210 thickness of the superiors' transparent membrane 220 transparent membrane upper surface is 2～30 μm.
In certain embodiments, the superiors' transparent membrane 220 uses PET film, the soft transparent membrane of ground floor 240
Using TPU membrane, the soft transparent membrane of the second layer 260 uses TPU membrane, and the soft transparent membrane of the bottom 280 is adopted
Use TPU membrane.The superiors' transparent membrane 220 (such as PET)+beneath 1 to 4 layer can also be used in structure soft
The protecting film of transparent membrane (such as TPU), and improve technique determine adhesive coating adhesion strength according to concrete stress,
Mainly present " the highest, middle low；On centre higher than lower " feature.
In certain embodiments, layer is used to include: the transparent membrane of the superiors' transparent membrane 220, ground floor is soft
Property transparent membrane 240, the soft transparent membrane of the second layer 260, the soft transparent membrane of the bottom 280, this 2～
In 4 layers of soft transparent membrane, it is arranged between the soft transparent membrane of every two-layer and the soft transparent membrane of the bottom
280 lower surfaces are provided with adhesive coating, the superiors' transparent membrane 220 transparent membrane upper surface is provided with UV and is coated with
Layer 210.
In certain embodiments, above-mentioned have bending guarantor's type and the multilayer elastic THIN COMPOSITE membrane element of shock resistance function
Part, peel ply 300 thickness 25～100 μm, peel ply 300 membrane material is polyethylene terephthalate
(PET), Low Density Polyethylene (LDPE), polypropylene film (PP), polyvinyl chloride film (PVC),
Merlon (PC) etc., wherein with polyethylene terephthalate (PET) as preferred material.
Protective layer includes protective layer basement membrane 110 and protective layer glue-line 120.Protective layer basement membrane 110 thickness 25～
100 μm, protective layer basement membrane 110 material be polyethylene terephthalate (PET), Merlon (PC),
Polypropylene film (PP), polyvinyl chloride film (PVC) etc., wherein with PET as preferred material.Basement membrane is protected
Sheath glue-line 120 thickness 5～30 μm.
In certain embodiments, the present invention uses bar coating, micro-gravure roller coating, gravure roller coating and spraying work
The coating processes such as skill uniformly coat UV coating at above-mentioned the superiors transparent membrane 220 transparent membrane upper surface
210.Wherein first-selected nick roll coating process.UV coating 210 solidifies after drying baker, UV light irradiation,
UV coating 210 after solidification has certain anti-scratch, effect of rub resistance.According to the thickness after film forming not
With, film case hardness can reach 2H～6H.The superiors' transparent membrane of UV coating 210 will be had been coated with
The another side coating upper strata adhesive coating 230 of 220 transparent membranes, wherein coating process is: scraper for coating,
Slit type is coated with, gravure roller coating, convex roller coat cloth etc..
After the solidification of upper strata adhesive coating 230 drying, cover the soft thin transparent of last layer ground floor at its another side
Film 240.Then glue used and coating thickness are changed, at another of the soft transparent membrane of this ground floor 240
Topcoating cloth the first adhesive coating 250, after drying solidification, encloses at the first adhesive coating 250 another side again
The soft transparent membrane of the second layer 260 (another layer of soft transparent membrane), by that analogy, until enclosed
Till transparent membrane reaches to use the transparent membrane number of plies needed for layer.By the combination of technique above, so that
Layer is used to reach have bending guarantor's type and the multilayer elastic laminated film element of shock resistance function.
Seeing shown in accompanying drawing 2, in figure, E1 is the superiors' transparent membrane 220 stress envelope, and E2 is
One layer of soft transparent membrane 240 stress envelope, E3 is compound rear integrated stress scattergram.Stress distribution
As Hooke's law σ=Ε ε data represent.Hooke's law: in the case of stress is less than proportional limit, Gu
Stress σ in body is directly proportional to strain stress, i.e. σ=Ε ε, and in formula, E is constant (Young's modulus).Attached
Shown in Fig. 2, this product outer layer surface (the superiors, orlop) stress is maximum, it is illustrated that line of tension is the longest；Produce
Product intermediate layer (in the middle part of section) stress is minimum, it is illustrated that line of tension is the shortest.
Preparation method of the present invention, comprises the following steps:
As shown in Figure 1, a kind of of the present embodiment offer has bending guarantor's type and the multilayer elastic of shock resistance function
Laminated film element, including: use layer, protective layer and peel ply 300.
Use layer includes: the superiors' transparent membrane 220, and its thickness is 23 μm；The soft transparent membrane of ground floor
240, its thickness is 68 μm；The soft transparent membrane of the second layer 260, its thickness is 30 μm；The bottom is soft
Its thickness of transparent membrane 280 is 88 μm；The hardness of the TPU membrane used is 40 ± 5HA.
It is arranged at the upper strata adhesive coating between the superiors' transparent membrane 220 and the soft transparent membrane of ground floor 240
230, its adhesion strength is maximum, and using material is high viscosity acrylic glue, and its thickness is 50 μm；It is arranged at
The first adhesive coating 250 between one layer of soft transparent membrane 240 and the soft transparent membrane of the second layer 260, needs
Will higher adhesion strength, use material be PU glue, its thickness is 30 μm；It is arranged at the soft transparent membrane of the second layer
The second adhesive coating 270 between 260 and the soft transparent membrane of the bottom 280, it is desirable to have certain adhesion strength,
Using material is PU glue, and its thickness is 20 μm；It is arranged at the end of the bottom soft transparent membrane 280 lower surface
Layer adhesive coating 290, adhesion strength requires higher, and using material is special high viscosity silica gel, and its thickness is 20 μm；
Being arranged at the UV coating 210 of the superiors' transparent membrane 220 upper surface, thickness is 2～30 μm, and thickness is preferably
5μm。
Protective layer includes protective layer basement membrane 110 and protective layer glue-line 120.
The PET film 220 using layer to use is optical-grade transparent PET film, and light transmittance is more than 95%, and mist degree is less than
3%.The TPU membrane used is TPU film, and light transmittance is more than 85%, and mist degree is less than 10%.
Peel ply 300 selects clear PET film, and its light transmittance is more than 92%, and mist degree is less than 5%, this stripping
Layer thickness 25～100 μm.Preferably, the thickness of peel ply 300 is 30 μm.
Protective layer basement membrane 110 selects clear PET film, and its light transmittance is more than 92%, and mist degree is less than 5%, should
Basement membrane thickness is 25～100 μm, thickness preferably 30 μm；Protective layer glue-line 120 thickness is 5～30 μm, thick
Degree preferably 8 μm.
Above-mentioned case study on implementation, manufacturing process is: use nick roll coating process at above-mentioned the superiors transparent membrane
220 upper surfaces uniformly coat UV coating 210.UV coating 210 is solid after drying baker, UV light irradiation
Changing, the UV coating after solidification has certain anti-scratch, effect of rub resistance.UV coating 210 will be had been coated with
The another side of the superiors' transparent membrane 220 use scraper for coating technique coating upper strata adhesive coating 230.On
After layer adhesive coating 230 drying solidification, it is covered with the soft transparent membrane of ground floor 240 at its another side；So
Glue and coating thickness used by rear change, the another side at the soft transparent membrane of ground floor 240 is coated with first and glues
Gel coating 250, after drying solidification；It is soft that another side at the first adhesive coating 250 encloses the second layer again
Transparent membrane 260；Again change glue used and coating thickness, at the soft transparent membrane of the second layer 260
Another side is coated with the second adhesive coating 270, after drying solidification, at the another side of the second adhesive coating 270
Enclose the soft transparent membrane of the bottom 280 again；Finally, in another topcoating of the soft transparent membrane of the bottom 280
Cloth bottom adhesive coating 290, then peel ply 300 of fitting；At UV coating 210 coated thereon protective layer glue
Layer 120, protective layer basement membrane 110 of fitting on protective layer glue-line 120.
By the combination of technique above, so that using layer to reach have bending guarantor's type and the tool of shock resistance function
There are bending guarantor's type and the multilayer elastic laminated film element of shock resistance function.
Using the protecting film after above base material and technique preparation to use layer, test data are as follows:
Embodiment described above only have expressed the some embodiments of the present invention, and it describes more concrete and detailed
Carefully, but therefore can not be interpreted as limitation of the scope of the invention.It should be pointed out that, for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and
Improving, these broadly fall into protection scope of the present invention.Therefore, protection scope of the present invention should be with appended right
Requirement is as the criterion.
Claims (9)
1. there is bending guarantor's type and a multilayer elastic laminated film for shock resistance function, comprise from top to down
Have: cuticular layer, use layer and peel ply (300), on described use layer, be provided with cuticular layer, described use
Layer have peel ply (300), it is characterised in that described use layer includes from top to down: UV coating
(210), the superiors' transparent membrane (220), upper strata adhesive coating (230) if, middle dried layer soft
Bright thin film and be placed in the adhesive coating below every layer of soft transparent membrane, the soft transparent membrane of the bottom (280)；
Cuticular layer is introduced on described UV coating (210)；The soft transparent membrane of the described bottom (280) and stripping
Bottom adhesive coating (290) is introduced between absciss layer (300)；
Described soft transparent membrane material selects thermoplastic polyurethane, thermoplastic polyester elastomer, phenylethylene heat
Thermoplastic elastic；
Described upper strata adhesive coating (230) adhesion strength is 0.2kg/25mm～1.5kg/25mm；If it is middle
Dried layer adhesive coating adhesion strength is 0.05kg/25mm～0.2kg/25mm, if in middle dried layer adhesive coating
It is placed in upper layer higher than the adhesion strength of lower layer, the adhesion strength difference 0.03 of adjacent two adhesive coatings
kg/25mm；Described bottom adhesive coating layer (290) adhesion strength is 0.18kg/25mm～1.4kg/25mm.
A kind of multilayer elastic with bending guarantor's type and shock resistance function the most according to claim 1 is combined
Thin film, it is characterised in that described upper strata adhesive coating (230) if, middle dried layer adhesive coating, bottom glue
The thickness of gel coating (290) is 10～100 μm；If described centre dried layer adhesive coating includes: the first viscose glue
Coating (250), the second adhesive coating (270)；Adhesive coating material uses silica gel, acrylic glue, OCA
Optical cement, PU glue, pressure sensitive adhesive；
Described first adhesive coating (250) adhesion strength is 0.08kg/25mm～0.2kg/25mm, described
Second adhesive coating (270) adhesion strength is 0.05kg/25mm～0.18kg/25mm.
A kind of multilayer elastic with bending guarantor's type and shock resistance function the most according to claim 1 is combined
Thin film, it is characterised in that described the superiors transparent membrane (220) thickness is 18～88 μm, described goes up most
Layer transparent membrane (220) material be polyethylene terephthalate, Low Density Polyethylene, polypropylene film,
Polyvinyl chloride film, Merlon.
A kind of multilayer elastic with bending guarantor's type and shock resistance function the most according to claim 1 is combined
Thin film, it is characterised in that if the described centre soft transparent membrane of dried layer, the soft transparent membrane of the bottom (280)
The single-layer flexible transparent membrane thickness used is 30～300 μm, hardness 20～86HA；
If the described centre soft transparent membrane of dried layer includes: the soft transparent membrane of ground floor (240), the second layer
Soft transparent membrane (260)；
Described the superiors transparent membrane (220) are optical-grade transparent thin film, and light transmittance is more than 95%, and mist degree is low
In 3%；Described, the bottom soft transparent membrane (280) light transmittance is more than 85%, and mist degree is less than 10%.
A kind of multilayer elastic with bending guarantor's type and shock resistance function the most according to claim 1 is combined
Thin film, it is characterised in that described cuticular layer includes from top to down: protective layer basement membrane (110), protective layer glue
Layer (120)；Protective layer glue-line (120), described protective layer glue-line is introduced on described UV coating (210)
(120) protective layer basement membrane (110) it is provided with on；Described UV coating (210) thickness is 2～30 μm,
UV coating (210) material is epoxy acrylate coating；
Described peel ply (300) selects transparent membrane, and its light transmittance is more than 92%, and mist degree is less than 5%, institute
State peel ply (300) thickness 25～100 μm；Described peel ply (300) membrane material is poly terephthalic acid
Second diester, Low Density Polyethylene, polypropylene film, polyvinyl chloride film, Merlon.
A kind of multilayer elastic with bending guarantor's type and shock resistance function the most according to claim 1 is combined
Thin film, it is characterised in that described protective layer basement membrane (110) thickness 25～100 μm, its light transmittance is more than 92%,
Mist degree is less than 5%；Described protective layer basement membrane (110) material is polyethylene terephthalate, poly-carbonic acid
Ester, polypropylene film, polyvinyl chloride film；Described protective layer glue-line (120) thickness 5～30 μm.
7. one kind has bending guarantor's type and the multilamellar bullet of shock resistance function as described in any one of claim 1～6
The preparation method of property laminated film, it is characterised in that comprise the following steps:
(1) bar coating, micro-gravure roller coating, gravure roller coating and spraying coating process coating process, is used to go up most
Layer transparent membrane (220) upper surface uniformly coats UV coating (210)；UV coating (210) is through overdrying
Dry case, solidification after UV light irradiation, UV coating (210) film case hardness reaches 2H～6H；
(2) another topcoating of the superiors' transparent membrane (220) of UV coating (210) will, be had been coated with
Cloth upper strata adhesive coating (230), wherein coating process is: scraper for coating, and slit type is coated with, gravure roller coating,
Convex roller coat cloth；
(3), upper strata adhesive coating (230) drying solidification after, be covered with ground floor at its another side soft
Transparent membrane (240)；Then glue used and coating thickness are changed, at ground floor soft transparent membrane film
(240) another side is coated with the first adhesive coating (250), after drying solidification；It is coated with at the first viscose glue
The another side of layer (250) encloses the soft transparent membrane of the second layer (260) again, then soft at the second layer
The another side of bright thin film (260) is coated with the second adhesive coating (270), under to enclose the bottom soft
Bright thin film (280)；By that analogy, until the soft transparent membrane enclosed reach to use needed for layer transparent
Till the thin film number of plies；
(4), last, at the bottom soft transparent membrane (280) another side barrier coating adhesive coating
, then peel ply of fitting (300) (290)；At UV coating (210) coated thereon protective layer glue-line (120),
Fit above protective layer basement membrane (110) at protective layer glue-line (120).
The most according to claim 7, there is bending guarantor's type and the multilayer elastic laminated film of shock resistance function
Preparation method, it is characterised in that described the superiors transparent membrane (220) thickness is 23 μm, described
Ground floor soft transparent membrane (240) thickness is 68 μm, the soft transparent membrane of the described second layer (260)
Thickness is 30 μm, and the described bottom soft transparent membrane (280) thickness is 88 μm, the thermoplastic used
The hardness of property polyurethane film is 40 ± 5HA.
The most according to claim 7, there is bending guarantor's type and the multilayer elastic laminated film of shock resistance function
Preparation method, it is characterised in that described upper strata adhesive coating (230) uses material to be sub-gram of high viscosity
Power glue, its thickness is 50 μm；It is arranged at the soft transparent membrane of ground floor (240) soft with the second layer
The first adhesive coating (250) between bright thin film (260) uses material to be PU glue, and its thickness is 30 μm；
Be arranged between the soft transparent membrane of the second layer (260) and the soft transparent membrane of the bottom (280)
Two adhesive coatings (270) use material to be PU glue, and its thickness is 20 μm；It is arranged at the bottom soft
The bottom adhesive coating (290) of transparent membrane (280) lower surface uses material to be high viscosity silica gel, its
Thickness is 20 μm；It is arranged at the UV coating (210) of the superiors' transparent membrane (220) upper surface, thick
Degree is 2～30 μm.
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| CN201410796376.8A CN104608445B (en) | 2014-12-18 | 2014-12-18 | A multi-layer elastic composite film having functions of bending shape maintenance and impact resistance and a preparing method thereof |
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| CN105415832A (en) * | 2015-12-21 | 2016-03-23 | 江苏宏远新材料科技有限公司 | Impact-resisting polyurethane film |
| CN105522799A (en) * | 2016-01-13 | 2016-04-27 | 东莞市纳利光学材料有限公司 | A kind of thermocompression formable protective film with flash diamond and antistatic effect and preparation method thereof |
| CN106273951A (en) * | 2016-10-20 | 2017-01-04 | 东莞市纳利光学材料有限公司 | A kind of impact-resistant heat insulation film |
| CN106833423A (en) * | 2017-03-22 | 2017-06-13 | 东莞市纳利光学材料有限公司 | A kind of adhesive anti-blue light composite film |
| CN107253383B (en) * | 2017-04-28 | 2019-05-21 | 东莞市纳利光学材料有限公司 | Hot bending film and preparation method thereof |
| CN110828387B (en) * | 2018-08-10 | 2021-10-22 | 财团法人工业技术研究院 | Protective structure and electronic device having the same |
| CN109321158A (en) * | 2018-10-24 | 2019-02-12 | 佛山市佳世达薄膜科技有限公司 | A kind of soft PC protective film |
| CN112339382A (en) * | 2019-08-09 | 2021-02-09 | 华为技术有限公司 | Protective film, preparation method thereof and electronic equipment |
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| CN202271605U (en) * | 2011-10-24 | 2012-06-13 | 上佳粘胶股份有限公司 | Insulating pads for touch entities for touch screens |
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