CN103336321B - Polypropylene type optical protective film - Google Patents
Polypropylene type optical protective film Download PDFInfo
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- CN103336321B CN103336321B CN201310228933.1A CN201310228933A CN103336321B CN 103336321 B CN103336321 B CN 103336321B CN 201310228933 A CN201310228933 A CN 201310228933A CN 103336321 B CN103336321 B CN 103336321B
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- -1 Polypropylene Polymers 0.000 title claims abstract description 30
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 23
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 23
- 230000003287 optical effect Effects 0.000 title claims abstract description 19
- 230000001681 protective effect Effects 0.000 title claims abstract description 16
- 239000010410 layer Substances 0.000 claims abstract description 41
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims abstract description 41
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims abstract description 31
- 239000012790 adhesive layer Substances 0.000 claims abstract description 22
- 229920001400 block copolymer Polymers 0.000 claims abstract description 14
- 239000012792 core layer Substances 0.000 claims abstract description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 25
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 24
- 239000004711 α-olefin Substances 0.000 claims description 22
- 238000006555 catalytic reaction Methods 0.000 claims description 20
- 229920000642 polymer Polymers 0.000 claims description 16
- 239000002216 antistatic agent Substances 0.000 claims description 13
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 claims description 11
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 claims description 11
- 239000012748 slip agent Substances 0.000 claims description 11
- 150000001336 alkenes Chemical class 0.000 claims description 10
- 229920001577 copolymer Polymers 0.000 claims description 10
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 9
- 239000005977 Ethylene Substances 0.000 claims description 9
- 239000000178 monomer Substances 0.000 claims description 8
- 238000007334 copolymerization reaction Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 16
- 239000004615 ingredient Substances 0.000 abstract description 10
- 239000000126 substance Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000006224 matting agent Substances 0.000 abstract description 4
- 239000002904 solvent Substances 0.000 abstract description 4
- 238000003763 carbonization Methods 0.000 abstract description 3
- 239000000356 contaminant Substances 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 37
- 238000001816 cooling Methods 0.000 description 19
- 238000005096 rolling process Methods 0.000 description 13
- 238000007766 curtain coating Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 238000001125 extrusion Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000005282 brightening Methods 0.000 description 9
- 238000002844 melting Methods 0.000 description 9
- 230000008018 melting Effects 0.000 description 9
- 238000004806 packaging method and process Methods 0.000 description 9
- 230000032683 aging Effects 0.000 description 8
- 238000003851 corona treatment Methods 0.000 description 8
- 230000035945 sensitivity Effects 0.000 description 8
- 238000007493 shaping process Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000007765 extrusion coating Methods 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 229920000573 polyethylene Polymers 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 210000002469 basement membrane Anatomy 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 235000013599 spices Nutrition 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 239000004831 Hot glue Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- LDVVTQMJQSCDMK-UHFFFAOYSA-N 1,3-dihydroxypropan-2-yl formate Chemical group OCC(CO)OC=O LDVVTQMJQSCDMK-UHFFFAOYSA-N 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- 229920002633 Kraton (polymer) Polymers 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012661 block copolymerization Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- HGAZMNJKRQFZKS-UHFFFAOYSA-N chloroethene;ethenyl acetate Chemical compound ClC=C.CC(=O)OC=C HGAZMNJKRQFZKS-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
A kind of polypropylene type optical protective film, this diaphragm is made up of smooth layer, sandwich layer and self-adhesive layer, and gross thickness is 20-70 micron, and described smooth layer thickness accounts for gross thickness than being 10%-20%, core layer thickness accounts for gross thickness than being 40%-60%, and self-adhesive layer thickness accounts for gross thickness than being 10%-30%; The present invention have cost low, take a photograph without cull, brilliant point less, good appearance, no solvent residue, the tack evenly and easily advantage such as control.The present invention adjusts adhesion strength by POP and EVA adding appropriate level.In addition, the present invention adopts propylene-based block copolymer to produce as major ingredient, makes diaphragm surface have certain shaded effect and rough surface performance, thus plays sun-proof effect against pressure to protected base material.Reach the object of delustring compared to common PE diaphragm by adding matting agent, the present invention further avoids inorganic contaminants in matting agent or the impact of carbonization point crystalline substance point on diaphragm outward appearance.
Description
Technical field
The present invention relates to a kind of diaphragm, especially a kind of polypropylene type optical protective film of being produced by casting technique.
Background technology
Diaphragm is a kind of film being used for protecting easily infringement surface.Its objective is and prevent protected substrate surface from suffering damage in the middle of transport, assembling or process or polluting, diaphragm can be attached to protected substrate surface always, abandons until be just torn when product sends to user.
Optical thin film means on optical element or separate substrates, and system plates or be coated with the combination of one or more layers dielectric film or metal film or this two classes film, to change the transmission characteristic of light wave, comprises the transmission of light, reflection, absorption, scattering, polarization and phase change.Therefore can the penetrance of modulation different-waveband element surface and reflectivity via suitable design, the light of different polarization plane can also be made to have different characteristics.If the film such as brightening piece, polaroid is exactly be conventional optical thin film.
Optical thin film generally for protective film surface and is not damaged in the process used, and uses special optical protection layer to carry out surface protection with regard to needing.Optical protection layer needs to have following characteristic: suitable and stable viscosity; Easily tear, and without cull, do not take a photograph after tearing; After long-time laminating, bubble can not be had to float or alice; Film inclusion-free and brilliant point.
The mode of production of current optical protection layer mainly contains the self-adhering protective film of glue-type diaphragm and an extrusion molding.Upper glue-type diaphragm is first made basement membrane by polyester or polyolefin usually; one or more layers pressure-sensitive hot melt adhesive is coated again on basement membrane; the macromolecular material of composition hot melt adhesive mainly contains polyisobutylene, polyacrylic acid and ester class, ethylene-vinyl acetate copolymer, polyurethane, elastic body etc.; this kind of material all has lower glass transition temperature and lower molecular weight, and therefore after tearing diaphragm, binding resin often easily shifts and remains on the surface of protected body.And also need to use solvent type adhesive during upper glue-type diaphragm production, production run comprises masking, gluing, drying, and job sequence is complicated, and production cost is high, and the pollution of solvent to environment is larger.And due to the change of cohesion along with temperature of adhesive and diaphragm basement membrane and the passing of time, can change, thus cause adhesion property to decline, very easily produce cull when diaphragm is torn from protected device.
It is polyethylene optical protection layer that self-adhering protective film is produced more at present.And polyethylene diaphragm is generally by Multi-layer blown film explained hereafter; tygon heat resistance is poor; easily cracking and produce brilliant point and charing point in process of production; make the surface contact of diaphragm and protected device will out-of-flatness; easily produce bubble or alice in contact position wounded, and blooming surface is easily weighed by the crystalline substance point of diaphragm film and carbonization point.In addition, the adhesive strength of polyethylene diaphragm can change along with the change of environment temperature height, and temperature more high viscosity is stronger, is more difficult to tear, and serious cannot tear at all, have impact on the normal use of protected product; And temperature is lower, viscosity is poorer, there will be the phenomenon that a part or whole part comes off during low temperature, does not reach the object of protection product.Poor stability has become the key factor hindering the development of polythene self-adhering diaphragm.
Summary of the invention
The object of this invention is to provide a kind of polypropylene type optical protective film, to solve existing polythene self-adhering diaphragm poor stability, heat resistance is poor, job sequence is complicated, production cost high-technology problem.
The present invention is mainly solved the problems of the technologies described above by following technical proposals: a kind of polypropylene type optical protective film, this diaphragm is made up of smooth layer, sandwich layer and self-adhesive layer, gross thickness is 20-70 micron, described smooth layer thickness accounts for gross thickness than being 10%-20%, core layer thickness accounts for gross thickness than being 40%-60%, and self-adhesive layer thickness accounts for gross thickness than being 10%-30%;
Described smooth layer is made up of following weight ratio component: propylene-based block copolymer 100 parts and high-purity erucamide slip agent 0.1-0.25 part form;
Described sandwich layer is made up of following weight ratio component: common elastic body 10-50 part of propenyl-alpha-olefin of propylene-based block copolymer 100 parts, metallocene catalysis and the antistatic agent of 0.1-0.3 part form;
Described self-adhesive layer is made up of following weight ratio component: propenyl-alpha-olefin elastic body 50-150 part, ethylene vinyl acetate copolymer 10-50 part altogether of metallocene catalysis polypropylene 100 parts, metallocene catalysis.
As preferably, described propylene-based block copolymer is propylene di-block multipolymer or propylene ternary block polymer.
As preferably, in described di-block copolymerization or ternary block polymer, described ethylene contents is 5%-15%.
As preferably, alkene and the propylene copolymer of the propenyl-alpha-olefin of described metallocene catalysis elastic body to be alpha-olefin be C4-C8 altogether.
As preferably, described alpha-olefin is that in the alkene of C4-C8 and propylene copolymer, co-monomer content is 18-22%.
Above-mentioned three layers of raw material carry out spice respectively in airtight container, be conveyed into respectively in three extruder feed bins through special vacuum intaking device again and carry out melting, wherein the linkage section of every platform extruder and die head all has a filter to filter melt, avoids non-fused mass and brilliant point to enter die head.The melt of three extruders combines in die head connector, then extrude through die head, curtain coating cooling, again heating crystalline sizing, online cut and rolling packaging, obtain final diaphragm product.
The present invention adopts polypropylene, propylene copolymer elastomers to be that main material is produced; be based on some consideration following: polypropylene diaphragm is compared with polyethylene protective film; polyacrylic heat resistance is good; than being easier to the generation controlling brilliant point in production run; and polyacrylic processing temperature wide ranges can adapt to casting technique produces, thickness evenness is good, transparency is high.In addition, polypropylene relative density is lighter than mylar, produces relative cost low, and is easy to recycle, and calcination process does not produce toxic gas, and environmental pollution is little.
The invention has the beneficial effects as follows: the present invention have cost low, take a photograph without cull, brilliant point less, good appearance, ageing-resistant performance good, no solvent residue, the tack evenly and easily advantage such as control.The present invention adjusts film adhesion strength, ageing-resistant performance by POP and EVA adding appropriate level.In addition, the present invention adopts propylene-based block copolymer to produce as major ingredient, makes diaphragm surface have certain shaded effect and rough surface performance, thus plays sun-proof effect against pressure to protected base material.Reach the object of delustring compared to common PE diaphragm by adding matting agent, the present invention further avoids inorganic contaminants in matting agent or the impact of carbonization point crystalline substance point on diaphragm outward appearance.
Embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment 1: smooth layer is that the propylene di-block copolymer 1 00 part of 5%-15% and high-purity erucamide slip agent of 0.1 part form by ethylene contents; Sandwich layer by ethylene contents be the propylene di-block copolymer 1 00 part of 5%-15%, alpha-olefin is that the antistatic agent of the alkene of C4-C8 and propylene copolymer (POP, co-monomer content is 18-22%) 20 parts and 0.1 part forms; Self-adhesive layer is the alkene of C4-C8 and propylene copolymer (POP, co-monomer content is 18-22%) 100 parts and ethylene vinyl acetate copolymer (EVA) 40 parts composition by metallocene catalysis polypropylene (mPP) 100 parts, alpha-olefin.Above-mentioned trilaminate material carries out melting respectively through three single screw extrusion machines, then carries out film forming through block of ingredient connector, T-shaped die head co-extrusion, curtain coating cooling.Product follow-up through cooling and shaping, Thickness sensitivity, corona treatment, cut online, rolling and packaging, obtain final products.
Embodiment 2: high-purity erucamide slip agent that smooth layer is 5%-15% propylene di-block copolymer 1 00 part and 0.15 part by ethylene contents forms; Sandwich layer by ethylene contents be 5%-15% propylene di-block copolymer 1 00 part, alpha-olefin is that the antistatic agent of the alkene of C4-C8 and propylene copolymer (POP, co-monomer content is 18-22%) 20 parts and 0.2 part forms; Self-adhesive layer is the alkene of C4-C8 and propylene copolymer (POP, co-monomer content is 18-22%) 150 parts and ethylene vinyl acetate copolymer (EVA) 30 parts composition by metallocene catalysis polypropylene (mPP) 100 parts, alpha-olefin.Above-mentioned trilaminate material carries out melting respectively through three single screw extrusion machines, then carries out film forming through the cooling of block of ingredient connector, T-shaped die head co-extrusion and curtain coating.Product follow-up through cooling and shaping, Thickness sensitivity, corona treatment, cut online, rolling and packaging, obtain final products.
Embodiment 3: smooth layer is that the propylene ternary block polymer 100 parts of 5%-15% and high-purity erucamide slip agent of 0.2 part form by ethylene contents; Sandwich layer by ethylene contents be the propylene di-block copolymer 1 00 part of 5%-15%, alpha-olefin is that the antistatic agent of the alkene of C4-C8 and propylene copolymer (POP, co-monomer content is 18-22%) 20 parts and 0.15 part forms; Self-adhesive layer is the alkene of C4-C8 and propylene copolymer (POP, co-monomer content is 18-22%) 80 parts and ethylene vinyl acetate copolymer (EVA) 20 parts composition by metallocene catalysis polypropylene (mPP) 100 parts, alpha-olefin.Above-mentioned trilaminate material carries out melting respectively through three single screw extrusion machines, then carries out film forming through the cooling of block of ingredient connector, T-shaped die head co-extrusion and curtain coating.Product follow-up through cooling and shaping, Thickness sensitivity, corona treatment, cut online, rolling and packaging, obtain final products.
Embodiment 4: smooth layer is that in the propylene ternary block polymer of 5%-15%, high-purity erucamide slip agent of 100 parts and 0.25 part forms by ethylene contents; Sandwich layer is made up of the antistatic agent of common 10 parts, the elastic body (POP) of the propenyl-alpha-olefin of propylene ternary block polymer 100 parts, metallocene catalysis and 0.3 part; Self-adhesive layer is total to 135 parts, elastic body (POP) by the propenyl-alpha-olefin of metallocene catalysis polypropylene (mPP) 100 parts, metallocene catalysis, ethylene vinyl acetate copolymer (EVA) 10 parts forms.Above-mentioned trilaminate material carries out melting respectively through three single screw extrusion machines, then carries out film forming through the cooling of block of ingredient connector, T-shaped die head co-extrusion and curtain coating.Product follow-up through cooling and shaping, Thickness sensitivity, corona treatment, cut online, rolling and packaging, obtain final products.
Embodiment 5: smooth layer is made up of high-purity erucamide slip agent of 100 parts and 0.15 part in propylene ternary block polymer; Sandwich layer is made up of the antistatic agent of common 20 parts, the elastic body (POP) of the propenyl-alpha-olefin of propylene ternary block polymer 100 parts, metallocene catalysis and 0.15 part; Self-adhesive layer is total to 120 parts, elastic body (POP) by the propenyl-alpha-olefin of metallocene catalysis polypropylene (mPP) 100 parts, metallocene catalysis and ethylene vinyl acetate copolymer (EVA) 50 parts forms.Above-mentioned trilaminate material carries out melting respectively through three single screw extrusion machines, then carries out film forming through the cooling of block of ingredient connector, T-shaped die head co-extrusion and curtain coating.Product follow-up through cooling and shaping, Thickness sensitivity, corona treatment, cut online, rolling and packaging, obtain final products.
Above-mentioned raw materials is as propylene-based block copolymer, propylene-alpha-olefin is elastic body altogether, metallocene catalysis polypropylene, ethylene vinyl acetate copolymer, high-purity erucamide slip agent, (antistatic agent is monoglyceride to antistatic agent, sorbitan ester, one or more combinations of the conventional antistatic agent such as amine ethoxylate) be all that market is buied, wherein most of raw material is imported raw material, major vendor is selected from DOW Chemical (DOW), E.I.Du Pont Company (DUPONT), Basel (BASELL), Mitsui Chemicals (MITSUICHEMICALS), section rises (KRATON), Samsung Dao Daer (SUMSUNGTOTAL), Exxon (EXXON), the renowned companies such as Constant general (CONSTAB).
Comparative example 1: smooth layer is made up of high-purity erucamide slip agent of propylene ternary block polymer 100 parts and 0.15 part; Sandwich layer is made up of the antistatic agent of propylene ternary block polymer 100 parts, propylene-alpha-olefin altogether 20 parts, elastic body (POP) and 0.15 part; Self-adhesive layer is made up of metallocene catalysis polypropylene (mPP) 100 parts and ethylene vinyl acetate copolymer (EVA) 50 parts.Above-mentioned trilaminate material carries out melting respectively through three single screw extrusion machines, then carries out film forming through the cooling of block of ingredient connector, T-shaped die head co-extrusion and curtain coating.Product follow-up through cooling and shaping, Thickness sensitivity, corona treatment, cut online, rolling and packaging, obtain final products.
Comparative example 2: smooth layer is made up of high-purity erucamide slip agent of propylene ternary block polymer 100 parts and 0.15 part; Sandwich layer is made up of the antistatic agent of propylene ternary block polymer 100 parts and 0.15 part; Self-adhesive layer is made up of metallocene catalysis polypropylene (mPP) 100 parts and ethylene vinyl acetate copolymer (EVA) 50 parts.Above-mentioned trilaminate material carries out melting respectively through three single screw extrusion machines, then carries out film forming through the cooling of block of ingredient connector, T-shaped die head co-extrusion and curtain coating.Product follow-up through cooling and shaping, Thickness sensitivity, corona treatment, cut online, rolling and packaging, obtain final products.
Comparative example 3: smooth layer is made up of high-purity erucamide slip agent of propylene ternary block polymer 100 parts and 0.05 part; Sandwich layer is made up of the antistatic agent of propylene ternary block polymer 100 parts and 0.1 part; Self-adhesive layer is made up of polypropylene (mPP) 100 parts.Above-mentioned trilaminate material carries out melting respectively through three single screw extrusion machines, then carries out film forming through the cooling of block of ingredient connector, T-shaped die head co-extrusion and curtain coating.Product follow-up through cooling and shaping, Thickness sensitivity, corona treatment, cut online, rolling and packaging, obtain final products.
The item following points that production run of the present invention pays particular attention to: one, the dust impurities of raw material controls: raw material is from spice to conveying, require to carry out under air-proof condition, isolate with the curtain coating workshop of extruding of film between storage workshop and spice skip car, avoid the dust of raw material to enter casting unit; Two, crystalline substance point and the charing point control of process is melt extruded: every platform extruder and die head connector have filter, filtrator is to adopt the mode of cascade filtration for the best, filtrator divides coarse filtration and essence to filter two sections, thus avoids brilliant some charing point to wait impurity to enter die head to greatest extent; Three, deflector roll requires: casting unit to the deflector roll that rolling unit is all needs through special surface treatment, and guide roller surface adopts Teflon spraying or bag Teflon gum cover mode to process, thus avoids film self-adhesive layer and deflector roll to stick together plucking; Four, workshop environmental requirement: production run requires to carry out in dust-free workshop inside, workshop degree of purification requires more than 1000 grades, wherein require from curtain coating cooling unit to rolling unit to adopt poly (methyl methacrylate) plate to isolate, production operation personnel need to dress special garment for clean room, headgear and mouth mask as far as possible; Five, film dividing mode: the mode of cutting is taked to cut online, unreels the infringement of process to film self-adhesion protective seam when avoiding film secondary to cut.Six, the process of heating crystalline again of film: needed a heating and cooling device to heat again film before rolling, heating-up temperature 50 DEG C-100 DEG C, its objective is to accelerate film recrystallization, reduce the film curing time, thus polymer molecular chain is fully extended sizing, avoid rolling rear film to shrink distortion.
The test result of specific embodiment is as shown in the table:
The comparative test result of specific embodiment:
| Interventions Requested | Thickness (μm) | Product appearance | Clinging power scope (N) | Whether cull after stripping | Aging test | Adhere to base material |
| Embodiment 1 | 50 | Face is even | 1.4～1.6 | Nothing | Qualified | Brightening piece, electrical screen |
| Embodiment 2 | 50 | Face mist degree is poor | 1.9～2.5 | Nothing | Qualified | Brightening piece, electrical screen |
| Embodiment 3 | 50 | Face is even | 1.3～1.5 | Nothing | Qualified | Brightening piece, electrical screen |
| Embodiment 4 | 50 | Face is even | 1.2～1.3 | Nothing | Qualified | Brightening piece, electrical screen |
| Embodiment 5 | 50 | Face is even | 1.2～1.5 | Nothing | Qualified | Brightening piece, electrical screen |
| Comparative example 1 | 50 | Face is even | 1.2～1.3 | Have | Defective | Brightening piece, electrical screen |
| Comparative example 2 | 50 | Face is even | 0.9～1.0 | Have | Defective | Brightening piece, electrical screen |
| Comparative example 3 | 50 | Face is even | Very weak, can not as diaphragm | — | Defective | Brightening piece, electrical screen |
Remarks: the method for aging test is as follows: diaphragm and protected substrate adhesion is even, then dry 10 days in the baking oven of 50 DEG C, tear after taking-up, observe and have glue-free residual phenomena.
As can be seen from above-mentioned test, one, add POP in sandwich layer, self-adhesive layer is when adopting mPP, POP and EVA, ageing resistance is good, adhesion property is better.When two, only using mPP and EVA in self-adhesive layer, when doing aging test, when film is separated with base material, easily produce glue residual phenomena.Three, make in self-adhesive layer only to use mPP and EVA, when sandwich layer does not add POP, easily produce glue residual phenomena, ageing resistance is poor.Four, when self-adhesive layer does not add POP, EVA, when sandwich layer does not add POP, the adhesion property of film is poor, and ageing resistance is poor, can not use as diaphragm.
As can be seen here, when adding POP, self-adhesive layer employing mPP, POP and EVA in sandwich layer, product adhesion better performances, ageing resistance is good.According to the different requirements of different substrate materials to adhesion, suitably regulate the content ratio of POP and EVA, thus reach best just sticky effect, avoid that adhesion is excessive causes damage to substrate surface.
Claims (5)
1. a polypropylene type optical protective film, it is characterized in that this diaphragm is made up of smooth layer, sandwich layer and self-adhesive layer, gross thickness is 20-70 micron, and described smooth layer thickness accounts for gross thickness than being 10%-20%, core layer thickness accounts for gross thickness than being 40%-60%, and self-adhesive layer thickness accounts for gross thickness than being 10%-30%; Described smooth layer is made up of following weight ratio component: propylene-based block copolymer 100 parts and high-purity erucamide slip agent 0.1-0.25 part form; Described sandwich layer is made up of following weight ratio component: common elastic body 10-50 part of propenyl-alpha-olefin of propylene-based block copolymer 100 parts, metallocene catalysis and the antistatic agent of 0.1-0.3 part form; Described self-adhesive layer is made up of following weight ratio component: propenyl-alpha-olefin elastic body 50-150 part, ethylene vinyl acetate copolymer 10-50 part altogether of metallocene catalysis polypropylene 100 parts, metallocene catalysis.
2. a kind of polypropylene type optical protective film according to claim 1, is characterized in that described propylene-based block copolymer is propylene di-block multipolymer or propylene ternary block polymer.
3. a kind of polypropylene type optical protective film according to claim 2, is characterized in that, in the copolymerization of described propylene di-block or propylene ternary block polymer, ethylene contents is 5%-15%.
4. a kind of polypropylene type optical protective film according to claim 1, alkene and the propylene copolymer of the propenyl-alpha-olefin that it is characterized in that described metallocene catalysis altogether elastic body to be alpha-olefin be C4-C8.
5. a kind of polypropylene type optical protective film according to claim 4, is characterized in that described alpha-olefin is that in the alkene of C4-C8 and propylene copolymer, co-monomer content is 18-22%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310228933.1A CN103336321B (en) | 2012-12-24 | 2013-06-09 | Polypropylene type optical protective film |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210565603.7 | 2012-12-24 | ||
| CN201210565603 | 2012-12-24 | ||
| CN2012105656037 | 2012-12-24 | ||
| CN201310228933.1A CN103336321B (en) | 2012-12-24 | 2013-06-09 | Polypropylene type optical protective film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103336321A CN103336321A (en) | 2013-10-02 |
| CN103336321B true CN103336321B (en) | 2016-04-27 |
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| CN201310228933.1A Active CN103336321B (en) | 2012-12-24 | 2013-06-09 | Polypropylene type optical protective film |
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| CN105172287B (en) * | 2015-08-26 | 2017-09-05 | 宜昌宏裕塑业有限责任公司 | A kind of cast polypropylene film |
| CN105150650B (en) * | 2015-10-15 | 2017-05-10 | 昆山金华安电子科技有限公司 | Long-service life and high-viscosity building material self-adhered protective film |
| CN105835490A (en) * | 2016-04-08 | 2016-08-10 | 苏州长弓光电科技有限公司 | A manufacturing method of a high-haze high-viscosity protective film |
| CN105966011A (en) * | 2016-05-05 | 2016-09-28 | 永新股份（黄山）包装有限公司 | Self-adhesive surface protection film with high temperature resistance and manufacturing method thereof |
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| CN106188859A (en) * | 2016-07-29 | 2016-12-07 | 启明新材料股份有限公司 | A kind of delustring bag film |
| CN106142787B (en) * | 2016-09-07 | 2019-01-11 | 深圳市丰兆新材料股份有限公司 | Light guide plate online laminating protective film and preparation process thereof |
| CN107083203A (en) * | 2017-05-23 | 2017-08-22 | 成都市惠家胶粘制品有限公司 | Preparation method with highly viscous environment-friendly type light guide plate privacy protection film |
| CN107193075A (en) * | 2017-05-23 | 2017-09-22 | 成都市惠家胶粘制品有限公司 | Environment friendly heat resistant type is used for the diaphragm of light guide plate |
| CN107037530A (en) * | 2017-05-23 | 2017-08-11 | 成都市惠家胶粘制品有限公司 | A kind of high light guide plate privacy protection film of cleanliness factor |
| CN108251006B (en) * | 2017-12-30 | 2021-10-26 | 湖北慧狮塑业股份有限公司 | Polypropylene type protective film for photosensitive dry film and production method thereof |
| CN109920869B (en) * | 2019-02-27 | 2021-08-20 | 黄山天马新材料科技有限公司 | High-performance protective film on the back of photovoltaic module containing silane coupling agent and preparation method thereof |
| CN111440556B (en) * | 2019-09-29 | 2022-02-22 | 宁波激智科技股份有限公司 | Protective film and preparation method thereof |
| CN112442323B (en) * | 2020-11-20 | 2022-08-19 | 昆山金盟塑料薄膜有限公司 | Self-adhesive protective film and preparation method thereof |
| CN112760053A (en) * | 2020-12-16 | 2021-05-07 | 苏州绍荣光学科技有限公司 | Preparation process of CPP (chlorinated Polypropylene) protective film for conductive film |
| CN113415056B (en) * | 2021-06-30 | 2023-03-17 | 福建技术师范学院 | Flexible gloss type environment-friendly hot-melt direct-coating film and preparation method thereof |
| CN114701228B (en) * | 2022-04-12 | 2024-12-27 | 芊惠半导体科技(苏州)有限公司 | Environmentally friendly substrate for optical filter and wafer cleaving sheet and preparation method thereof |
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| CN1984952A (en) * | 2004-07-13 | 2007-06-20 | 埃克森美孚化学专利公司 | Improved surface treatment of polymeric articles |
| ES2659060T3 (en) * | 2008-06-27 | 2018-03-13 | Tredegar Film Products Corporation | Protective film with removable surface |
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| CN2880723Y (en) * | 2006-03-20 | 2007-03-21 | 杨亮 | Composite plastic packaging board |
| TW200911951A (en) * | 2007-04-27 | 2009-03-16 | Nitto Denko Corp | Pressure-sensitive adhesive sheet |
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Denomination of invention: Polypropylene optical protective film Effective date of registration: 20220119 Granted publication date: 20160427 Pledgee: Bank of China Limited Xiantao branch Pledgor: Hubei Huishi Plastics Industry Co.,Ltd. Registration number: Y2022420000019 |
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