CN105835489B - Optical grade brightening sheet protection film and making method thereof - Google Patents
Optical grade brightening sheet protection film and making method thereof Download PDFInfo
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- CN105835489B CN105835489B CN201610213640.XA CN201610213640A CN105835489B CN 105835489 B CN105835489 B CN 105835489B CN 201610213640 A CN201610213640 A CN 201610213640A CN 105835489 B CN105835489 B CN 105835489B
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Classifications
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- 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
- B32B27/08—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 of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/242—All polymers belonging to those covered by group B32B27/32
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Laminated Bodies (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention provides an optical grade brightening sheet protection film and a making method thereof. The optical grade brightening sheet protection film is composed of an adhesive layer and a substrate layer according to a weight ratio of 1-10:150-300, the adhesive layer is made of an acrylic pressure-sensitive adhesive, the substrate layer is formed by an outer layer, middle layer and inner layer co-extruded film, the adhesive layer is bonded to the outer layer of the substrate layer, and a weight ratio of the outer layer to the middle layer to the inner layer is 1-10:1-50:100-300. The adhesive coating process of the optical grade brightening sheet protection film is completed in a 10<3> grade dust-free workshop, the acrylic pressure-sensitive adhesive is fully-automatically and efficiently thermal-cured and coated, and the coated adhesive is slaked in a slaking room for 72h to make the adhesive layer and the substrate be completely cross-linked and polymerized. The tensile strength reaches 17MPa, the haze is not greater than 20%, so optical grade apparent requirements are reached; and the finished product is easy to plaster and tear, does not release at a high temperature of 120DEG C, and has no residual.
Description
Technical field
Optical functional materialses field of the present invention is and in particular to a kind of optical grade blast piece diaphragm and its manufacture method.
Background technology
Blast piece is most important optical functional materialses in backlight module, and its core technology rests in enterprise of Japan and Korea S always
In, nearly 2 years, with backlight module, liquid crystal display, in domestic production increasing, (this two classes product turnout amount domestic accounted for the whole world within 2014
About 60%), many Zoomlions set up production base in domestic investment one after another, and domestic Ye Youduojia listed company tears huge fund open and enters
The industry.But its surface protection membrane technology is similarly Japan and Korea S's business monopoly.
CN104140768A discloses a kind of diaphragm, wherein, includes a non-adhesion layer and an adhesion layer, and this is non-to stick together
Layer comprises top layer and intermediate layer further；The top layer of non-adhesion layer uses HOPP (H-PP) and low density polyethylene (LDPE)
(LDPE) blend, intermediate layer is with the high density polyethylene (HDPE) (HDPE) in polyethylene (PE) series and low density polyethylene (LDPE) (LDPE)
Blend, adhesion layer adds low durometer plastic with thermoplastic elastomer and makes.
CN104742467A discloses a kind of low melting point self-adhesive film, and specifically discloses the protection film layer of low melting point bonding film
By selected from HDPE (high density polyethylene (HDPE)), MDPE (medium density polyethylene), LLDPE (linear low density polyethylene (LLDPE)), PP polypropylene)
Make with one or more of LDPE (low density polyethylene (LDPE)) material.
CN104476876A discloses a kind of ultrahigh hardness diaphragm with toughness, includes：Peel ply, described stripping
Layer on introduce use layer, on described use layer introduce coating layer, described coating layer, using layer, peel ply form diaphragm
Overall structure；Described use layer comprises successively：Face four light solidifying coating, face three light solidifying coating, face two light solidifying coating, face one
Light solidifying coating, plastic film layers, bottom one or four light solidifying coating, bottom two light solidifying coating, bottom three light solidifying coating, adhesive
Layer, the base material that described use layer adopts is plastic film layers, and plastic film layers adopt：Polyethylene terephthalate vinegar PET, double
To stretched polypropene film BOPP, low-density polyethylene film LDPE, polythene PE, polyvinylchloride, polystyrene PS, or
One of polypropylene PP, is 150 μ -250 μ using thickness degree.
Although disclosing the application in diaphragm of polyethylene and polypropylene in technique scheme, not open
Three layers adopt low density polyethylene (LDPE) (LDPE), LLDPE (LLDPE), polypropylene (PP) and benzene two acyl p-phenylenediamine
(PPA) blend, does not also disclose and to prepare optical grade blast piece diaphragm using suitable proportioning, so that diaphragm is reached
To optical grade appearance and easy sticker is easily torn.
Content of the invention
For solving the above problems, the present invention provides a kind of optical grade blast piece diaphragm, described optical grade blast piece protection
Film is made up of glue-line and substrate layer, and the weight of described glue-line and substrate layer is than for 1～10:150～300, described glue-line is by sub- gram
Power pressure sensitive adhesive is made, and described substrate layer is formed by outer layer, middle level, the three-layer co-extruded blown film of internal layer, and described glue-line is outer with substrate layer
Layer phase bonding, described outer layer, middle level, the weight ratio of internal layer are for 1～10：1～50：100～300；
Described outer layer is made up of two kinds of blendings of LDPE and LLDPE, and in described outer layer, the weight ratio of two kinds of compositions is, LDPE：
LLDPE=1～5:10～20；
Described middle level is made up of two kinds of blendings of LDPE and PP, and in described middle level, the weight ratio of two kinds of compositions is, LDPE：PP=
200～100：1～5；
Described internal layer is made up of tri- kinds of blendings of LDPE, PP, PPA, and in described internal layer, the weight ratio of three kinds of compositions is, LDPE：
PP：PPA=100～80：1～10：200～400；
The gluing process of described optical grade blast piece diaphragm is to complete in thousand grades of dust-free workshops, by acrylic pressure sensitive adhesive warp
Cross full automatic high efficiency heat cure coating, coating, after curing room curing 72h, makes that glue-line is fully crosslinked with base material to be polymerized.
Preferably, the weight of described glue-line and substrate layer is than for 1～5:200～250.
Preferably, the weight of described outer layer, middle level, internal layer is than for 1～8：20～40：180～250.
Preferably, the weight of described outer layer, middle level, internal layer is than for 1：6：40.
Preferably, in described outer layer, the weight ratio of two kinds of compositions is, LDPE：LLDPE=1:15.
Preferably, in described middle level, the weight ratio of two kinds of compositions is, LDPE：PP=100：3.
Preferably, in described internal layer, the weight ratio of three kinds of compositions is, LDPE：PP：PPA=60：1：150.
Preferably, mist degree≤20% of described optical grade blast piece diaphragm.
The present invention also provides a kind of preparation method of above-mentioned optical grade blast piece diaphragm, and described substrate layer adopts three layers altogether
Extrusion film machines, and according to proportioning, adds outer layer raw material in outer layered material bucket, adds middle level raw material in the hopper of middle level, including
Internal layer raw material is added in layered material bucket；After each hopper mixes respectively, through three-layer co-extruded inflation film manufacturing machine extrusion, outer layer in process
Extruder temperature is 178～188 DEG C, and middle level extruder temperature is 172～186 DEG C, and internal layer extruder temperature is 168～178 DEG C, die head temperature
Spend for 188～200 DEG C, gluing process is to complete in thousand grades of dust-free workshops, by acrylic pressure sensitive adhesive through full automatic high efficiency thermosetting
Change coating, coating, after curing room curing 72h, makes that glue-line is fully crosslinked with substrate layer to be polymerized.
Beneficial effects of the present invention：
(1) tensile strength reaches 17MPa so that during volume to volume overlay film, film is difficult to shrink, and overlay film is smooth, does not make blast piece
Deformation；
(2) it is blended because employing PP and LDPE in three-layer co-extruded, be characterized in easily shearing, after making client's overlay film, cut no hair
Bits, improve process yields；
(3) all using blown film level raw material, film blowing device especially installs high efficiency particulate air filter additional it is ensured that the low fisheye of base material；
(4) coating adopts high performance acrylic pressure sensitive adhesive, completes in thousand grades of dust-free workshops, and reaching optical grade outward appearance will
Ask, finished product easy sticker, easily tear, and high temperature of 120 DEG C is not from rising, do not remain.
Specific embodiment
Below the specific embodiment of the present invention is described further：
The preparation of embodiment 1 optical grade blast piece diaphragm A
Using the machining of three-layer co-extruded blown film, add 0.5kg LDPE and 4.5kg LLDPE in outer layered material bucket, in middle level
Add 28.8kg LDPE, 1.2kg PP in hopper, internal layer hopper adds 50kg LDPE, 1kg PP, 150kg PPA；Plus
During work outer layer extruder temperature be 178～188 DEG C, middle level extruder temperature be 172～186 DEG C, internal layer extruder temperature be 168～
178 DEG C, die head temperature is 188～200 DEG C, and gluing process is to complete in thousand grades of dust-free workshops, and 7kg acrylic pressure sensitive adhesive is passed through
Full automatic high efficiency heat cure is coated with, and coating, after curing room curing 72h, makes that glue-line is fully crosslinked with substrate layer to be polymerized, obtains light
Classes and grades in school blast piece diaphragm A.
The preparation of embodiment 2 optical grade blast piece diaphragm B
Using the machining of three-layer co-extruded blown film, add 2.5kg LDPE and 4.5kg LLDPE in outer layered material bucket, in middle level
Add 18.8kg LDPE, 0.7kg PP in hopper, internal layer hopper adds 45kg LDPE, 1.5kg PP, 100kg PPA；
In process, outer layer extruder temperature is 180～185 DEG C, and middle level extruder temperature is 175～180 DEG C, and internal layer extruder temperature is 170
～175 DEG C, die head temperature is 190～195 DEG C, and gluing process is to complete in thousand grades of dust-free workshops, by 5.5kg acrylic pressure sensitive adhesive
Through full automatic high efficiency heat cure coating, coating, after curing room curing 72h, makes that glue-line is fully crosslinked with substrate layer to be polymerized, obtains
To optical grade blast piece diaphragm B.
Comparative example contrasts the preparation of optical grade blast piece diaphragm
According to technical formula in embodiment 1, feed change composition and ratio in comparative example, it is the raw material proportioning in comparative example
Less than in the scope of embodiment 1, and the scope described in the technical scheme not be given in the present invention, other process conditions are not
Become, prepare contrast optical grade blast piece diaphragm, concrete data is shown in Table 1：
Table 1
Comparative example 5 is that compared with Example 1, the curing time of gluing process is little for 24 according to technical formula in embodiment 1
When, other process conditions are constant, prepare diaphragm A5.
The performance comparison of effect example diaphragm
The physical property implementing the diaphragm of preparation in 1-2 and comparative example 1-4 is contrasted, and have detected diaphragm respectively
Tensile strength, mist degree, table 2 properties data takes five cell means, and tensile strength detection method adopts GB/T13022-1991,
Haze detection method adopts GBT 2410-2008, and adhesion strength detection method adopts GB/T 7124, concrete data such as table 2：
Table 2
The tensile strength that correction data from table 2 can be seen that the diaphragm of comparative example preparation is below embodiment 1-
2, during the diaphragm volume to volume overlay film of comparative example preparation, film easily shrinks, overlay film out-of-flatness, and the easy deformation of blast piece, using height
The acrylic pressure sensitive adhesive of performance, completes in thousand grades of dust-free workshops, and mist degree is less than 20%, reaches optical grade appearance requirement；From enforcement
Example 1-2 it can be seen that adopting embodiment 1-2 technique, 72 hours curing times, makes glue-line complete with substrate layer compared with comparative example 5
Full cross-linked polymeric, glue-line is increased with the adhesion strength of substrate layer, finished product easy sticker, easily tears, and high temperature of 120 DEG C is not from rising, do not remain.
The substrate layer of the present invention adopts three-layer co-extruded technology, in mixing unlike material, reaches stretch-proof, lower shrinkage, easily cuts
Cut, low fisheye requires；Three layers adopt low density polyethylene (LDPE) (LDPE), LLDPE (LLDPE), polypropylene (PP) and
The blend of benzene two acyl p-phenylenediamine (PPA), using automatic die and whole computer controls it can be ensured that work flow uniform
Cause, reduce the impact that extraneous variable causes to film quality；Meanwhile, using rational screw design, temperature automatically controlled, can be more accurate
True ground control material melting, it is to avoid form gel in film surface；Therefore to outward appearanceFlake can control, lines≤
2mm, mist degree≤20%；Gluing process：Complete in thousand grades of dust-free workshops, using the acrylic pressure sensitive adhesive of Korea S's import, Jing Guoquan
Automatical and efficient heat cure coating, coating, after curing room curing 72h, makes that glue-line is fully crosslinked with base material to be polymerized.
The announcement of book and teaching according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is changed.Therefore, the invention is not limited in specific embodiment disclosed and described above, to invention
In the scope of the claims that a little modifications and changes should also be as fall into the present invention.Although additionally, employing in this specification
Some specific terms, but these terms are merely for convenience of description, do not constitute any restriction to the present invention.
Claims (9)
1. a kind of optical grade blast piece diaphragm is it is characterised in that described optical grade blast piece diaphragm is by glue-line and substrate layer
Composition, the weight of described glue-line and substrate layer ratio is for 1～10：150～300, described glue-line is made up of acrylic pressure sensitive adhesive, described
Substrate layer is formed by outer layer, middle level, the three-layer co-extruded blown film of internal layer, and described glue-line is mutually bonding with the outer layer of substrate layer, described outer layer,
Middle level, the weight of internal layer are than for 1～10：1～50：100～300；
Described outer layer is made up of two kinds of blendings of LDPE and LLDPE, and in described outer layer, the weight ratio of two kinds of compositions is, LDPE：LLDPE
=1～5：10～20；
Described middle level is made up of two kinds of blendings of LDPE and PP, and in described middle level, the weight ratio of two kinds of compositions is, LDPE：PP=200
～100：1～5；
Described internal layer is made up of tri- kinds of blendings of LDPE, PP, PPA, and in described internal layer, the weight ratio of three kinds of compositions is, LDPE：PP：
PPA=100～80：1～10：200～400；
The gluing process of described optical grade blast piece diaphragm is to complete in thousand grades of dust-free workshops, by acrylic pressure sensitive adhesive through complete
Automatical and efficient heat cure coating, coating, after curing room curing 72h, makes that glue-line is fully crosslinked with base material to be polymerized.
2. optical grade blast piece diaphragm according to claim 1 is it is characterised in that the weight of described glue-line and substrate layer
Than for 1～5：200～250.
3. optical grade blast piece diaphragm according to claim 1 is it is characterised in that described outer layer, middle level, the weight of internal layer
Amount ratio is 1～8：20～40：180～250.
4. optical grade blast piece diaphragm according to claim 3 is it is characterised in that described outer layer, middle level, the weight of internal layer
Amount ratio is 1：6：40.
5. the optical grade blast piece diaphragm according to any one of claim 1-4 is it is characterised in that two kinds in described outer layer
The weight ratio of composition is, LDPE：LLDPE=1:15.
6. the optical grade blast piece diaphragm according to any one of claim 1-4 is it is characterised in that two kinds in described middle level
The weight ratio of composition is, LDPE：PP=100：3.
7. the optical grade blast piece diaphragm according to any one of claim 1-4 is it is characterised in that three kinds in described internal layer
The weight ratio of composition is, LDPE：PP：PPA=60：1：150.
8. the optical grade blast piece diaphragm according to any one of claim 1-4 is it is characterised in that described optical grade blast
Mist degree≤20% of piece diaphragm.
9. a kind of preparation method of optical grade blast piece diaphragm described in any one according to claim 1-8 is it is characterised in that institute
State substrate layer and adopt three-layer co-extruded blown film machining, according to proportioning, add outer layer raw material in outer layered material bucket, in the hopper of middle level
Add middle level raw material, internal layer hopper adds internal layer raw material；After each hopper mixes respectively, squeeze through three-layer co-extruded inflation film manufacturing machine
Go out, in process, outer layer extruder temperature is 178～188 DEG C, middle level extruder temperature is 172～186 DEG C, internal layer extruder temperature is
168～178 DEG C, die head temperature is 188～200 DEG C, and gluing process is to complete in thousand grades of dust-free workshops, by acrylic pressure sensitive adhesive warp
Cross full automatic high efficiency heat cure coating, coating, after curing room curing 72h, makes that glue-line is fully crosslinked with substrate layer to be polymerized.
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|---|---|---|---|
| CN201610213640.XA CN105835489B (en) | 2016-04-06 | 2016-04-06 | Optical grade brightening sheet protection film and making method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610213640.XA CN105835489B (en) | 2016-04-06 | 2016-04-06 | Optical grade brightening sheet protection film and making method thereof |
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| Publication Number | Publication Date |
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| CN105835489A CN105835489A (en) | 2016-08-10 |
| CN105835489B true CN105835489B (en) | 2017-02-15 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104742467A (en) * | 2013-12-31 | 2015-07-01 | 现代自动车株式会社 | Low-melting adhesive film |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101448963B1 (en) * | 2012-06-26 | 2014-10-13 | 주식회사 유엠티랩스 | Film for mobile equipment with shocking absorption |
| CN105328958B (en) * | 2014-08-15 | 2017-12-12 | 湖北航天化学技术研究所 | Diaphragm High-transparent polyethylene film |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104742467A (en) * | 2013-12-31 | 2015-07-01 | 现代自动车株式会社 | Low-melting adhesive film |
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Address after: 8 road 528325 in Guangdong province Foshan city Shunde District Xingtan town Bai'an road Qijiao Industrial Zone No. 1 Patentee after: Guangdong Dongli new materials Polytron Technologies Inc Address before: 8 road 528325 in Guangdong province Foshan city Shunde District Xingtan town Bai'an road Qijiao Industrial Zone No. 1 Patentee before: GUANGDONG DONGLI NEW MATERIALS SCIENCE & TECHNOLOGY CO., LTD. |