CN104972724A - Matte PET release film - Google Patents
Matte PET release film Download PDFInfo
- Publication number
- CN104972724A CN104972724A CN201510293237.8A CN201510293237A CN104972724A CN 104972724 A CN104972724 A CN 104972724A CN 201510293237 A CN201510293237 A CN 201510293237A CN 104972724 A CN104972724 A CN 104972724A
- Authority
- CN
- China
- Prior art keywords
- layer
- mould release
- release membrance
- sub
- matt layer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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
- 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- 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
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/538—Roughness
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to a matte PET release film comprising a first PET layer, a matte layer, a release agent layer, an adhesive layer, and a second PET layer. The matte layer comprises the materials of, by weight, 100 parts of polyurethane resin, 6-8 parts of silica, and 3-4 parts of PMMA particles, wherein the number average molecular weight of polyurethane resin is 2900-3000g/mol, the particle size of silica is 80-90nm, the specific surface area of silica is 40-45m<2>/g, the particle size of PMMA is 150-160nm, and the number average molecular weight of PMMA is 1500-1600g/mol. According to the invention, the formula of the matte layer is optimized, such that the self-debubbling capacity of the matte layer is improved, and the prepared matte PET release film does not contain bubbles. Therefore, the structural stability of the release film is improved, the flatness of the release film is improved, the surface roughness of the release film is ameliorated, and the matte effect of the release film is improved.
Description
Technical field
The present invention relates to a kind of mould release membrance, be specifically related to a kind of sub-light PET mould release membrance.
Background technology
The Main Function of mould release membrance isolates, fills, protects and be easy to peel off.If divide by the material of base material, can comprise: the multiple mould release membrances such as PE mould release membrance, PET mould release membrance, OPP mould release membrance, PC mould release membrance, PS mould release membrance, BOPP mould release membrance.If go to divide by functional perspective, mould release membrance can be divided into again printing opacity mould release membrance and sub-light mould release membrance, and wherein, the preparation technology of printing opacity mould release membrance is simply ripe, and market accounting is large, and the complicated process of preparation of sub-light mould release membrance, market accounting is little.
For sub-light mould release membrance, main in the prior art exist the following technological deficiency being difficult to overcome: 1) row of matt layer steeps ability, and bubble is difficult to drain; 2) flatness of matt layer is low, little time large during surface roughness, is difficult to control.
Summary of the invention
For above-mentioned technological deficiency, the object of the present invention is to provide a kind of sub-light PET mould release membrance, it is strong from row's bubble ability, and flatness is high, and surface roughness is moderate.
Technical scheme of the present invention is summarized as follows:
A kind of sub-light PET mould release membrance, it is provided with from top to bottom successively: the first pet layer, matt layer, parting agent layer, adhesive layer and the second pet layer; Described matt layer comprises the material of following weight portion:
Polyurethane resin 100 weight portion;
Silica 6 ~ 8 weight portion;
PMMA particle 3 ~ 4 weight portion;
Wherein, the number-average molecular weight of described polyurethane resin is 2900 ~ 3000g/mol;
The particle diameter of described silica is 80 ~ 90nm, and specific area is 40 ~ 45m
2/ g;
The particle diameter of described PMMA particle is 150 ~ 160nm, and number-average molecular weight is 1500 ~ 1600g/mol.
Preferably, described sub-light PET mould release membrance, wherein, described matt layer also comprises the nickel powder of 0.3 ~ 0.4 weight portion, and the particle diameter of described nickel powder is 80 ~ 90nm.
Preferably, described sub-light PET mould release membrance, wherein, described matt layer also comprises the dcpd resin of 2 ~ 3 weight portions.
Preferably, described sub-light PET mould release membrance, wherein, the number-average molecular weight of described dcpd resin is 6300 ~ 6500g/mol.
Preferably, described sub-light PET mould release membrance, wherein, described matt layer also comprises the vinyl-vinyl acetate copolymer of 0.5 ~ 0.6 weight portion.
Preferably, described sub-light PET mould release membrance, wherein, the number-average molecular weight of described vinyl-vinyl acetate copolymer is 1700 ~ 1800g/mol.
Preferably, described sub-light PET mould release membrance, wherein, described matt layer also comprises the thiophene-2-formaldehyde of 0.2 ~ 0.3 weight portion.
Preferably, described sub-light PET mould release membrance, wherein, described matt layer also comprises the 2,6-DHBA of 0.2 ~ 0.3 weight portion.
The invention has the beneficial effects as follows: this case by improving and optimizating the formula of matt layer, improve matt layer from row's bubble ability, to make in the sub-light PET mould release membrance obtained not bubbles, add the structural stability of mould release membrance; Also improve the flatness of mould release membrance simultaneously, improve the surface roughness of mould release membrance, to promote the matt effect of mould release membrance.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, can implement according to this with reference to description word to make those skilled in the art.
This case proposes the sub-light PET mould release membrance of an embodiment, and it is provided with from top to bottom successively: the first pet layer, matt layer, parting agent layer, adhesive layer and the second pet layer; Matt layer comprises the material of following weight portion:
Polyurethane resin 100 weight portion;
Silica 6 ~ 8 weight portion;
PMMA particle 3 ~ 4 weight portion;
Wherein, the number-average molecular weight of polyurethane resin is 2900 ~ 3000g/mol;
The particle diameter of silica is 80 ~ 90nm, and specific area is 40 ~ 45m
2/ g;
The particle diameter of PMMA particle is 150 ~ 160nm, and number-average molecular weight is 1500 ~ 1600g/mol.
Polyurethane resin is the main material being used as matt layer first, relative to polymer such as other mylar, epoxy resin, polyolefin, polyethers, it can significantly improve the flatness of matt layer, but find from experimental analysis, only use polyurethane resin to reach optimal value, also must limit its number-average molecular weight, only in specific molecular weight ranges, polyurethane resin just can show this advantage of distinctive high-flatness, otherwise the flatness of matt layer will be affected.
Silica in the technical scheme of this case for improve matt layer from row's bubble ability, in the prior art, nonmetal oxide or even metal oxide do not possess this ability usually, but research finds, when the nano level oxide of certain class contains specific specific area, it effectively can improve the bubble of the row certainly ability of matt layer to a certain extent.Therefore, in above-mentioned formula, not only to limit the addition of silica, more will limit the particle diameter of silica and specific area, 40 ~ 45m is exceeded for specific area
2the silica of this scope of/g, it will be had a greatly reduced quality on the impact of matt layer row bubble performance.
PMMA is the abbreviation of polymethyl methacrylate, and PMMA particle is mainly used in the surface roughness regulating matt layer, thus controls the sub-luminosity of matt layer further.Go to consider from polyurethane resin, silica compatibility aspect, the particle diameter of PMMA particle and number-average molecular weight all should be limited.If the particle diameter of PMMA particle is less than normal, the surface roughness of matt layer can be reduced in theory, but owing to there is critical surface stress between PMMA and polyurethane resin in reality, the surface roughness of matt layer can be increased on the contrary, make sub-luminosity depart from ideal value; If the particle diameter of PMMA particle is bigger than normal, the surface roughness of matt layer can be increased in theory, but the specific surface contacted with polyurethane resin due to PMMA in reality reduces, there is critical surface stress between the two to reduce, the surface roughness of matt layer can be reduced on the contrary, sub-luminosity is partial to transparent, matt effect reduces.If the number-average molecular weight of PMMA particle is less than 1500g/mol, then can reduce the weatherability of matt layer, after long-time use, matt layer can tend to transparence; If the number-average molecular weight of PMMA particle is greater than 1600g/mol, then can increase the hardness of matt layer, thus the adhesive force of mould release membrance and service life are reduced greatly.
As another embodiment of this case, wherein, matt layer also comprises the nickel powder of 0.3 ~ 0.4 weight portion, and the particle diameter of nickel powder is 80 ~ 90nm.Nickel powder can under the prerequisite not increasing matt layer hardness, increase flatness and row's bubble speed of matt layer, but research finds, the addition of nickel powder and particle size range should be defined, otherwise too low addition and too high addition all will make the performance of matt layer depart from optimized scope.
As the another embodiment of this case, wherein, matt layer also comprises the dcpd resin of 2 ~ 3 weight portions.Research finds, a small amount of dcpd resin can significantly improve the bubble of the row certainly ability of matt layer, and dcpd resin also can improve the ageing resistace of matt layer simultaneously, makes the sub-luminosity of mould release membrance more stable.But it is noted that, the addition of dcpd resin should be limited.It is further preferred that the number-average molecular weight of dcpd resin also should be defined, preferable range is 6300 ~ 6500g/mol.If the number-average molecular weight of dcpd resin is less than 6300g/mol, then cannot reach the row improving matt layer and steep ability, if the number-average molecular weight of dcpd resin is greater than 6500g/mol, then can increase matt layer internal stress, make the matt layer in mould release membrance easy to crack.
As the another embodiment of this case, wherein, matt layer also comprises the vinyl-vinyl acetate copolymer of 0.5 ~ 0.6 weight portion.Research finds, vinyl-vinyl acetate copolymer can improve the flatness of matt layer, but the polymer such as polyethylene, polyvinyl acetate, propylene-vinyl acetate copolymer does not all have this effect.In vinyl-vinyl acetate copolymer, the quality accounting of ethene and vinyl acetate is not construed as limiting, and both arbitrary ratios all can improve the flatness of matt layer, but is 30 ~ 35wt% as the content that more preferably scope is ethene.But the addition of vinyl-vinyl acetate copolymer should be restricted, because addition can affect the impact of vinyl-vinyl acetate copolymer on matt layer flatness.It is further preferred that the number-average molecular weight of vinyl-vinyl acetate copolymer also should be defined, preferred value is 1700 ~ 1800g/mol, if depart from this scope, then matt layer flatness will be caused to reach optimum value.Need it is to be noted that the synthetic method of vinyl-vinyl acetate copolymer belongs to prior art in addition, adopt the polymerization that general olefin polymerization conditions can realize vinyl-vinyl acetate copolymer.
As the another embodiment of this case, wherein, matt layer also comprises the thiophene-2-formaldehyde of 0.2 ~ 0.3 weight portion.Research finds, thiophene-2-formaldehyde can regulate the overall structure toughness of matt layer, thus can improve the flatness of matt layer.But other thiophenes such as thiophene-2-methanol, thiophene-2-carboxylic acid or thiophene-2-acetic acid then do not have this function.Further, the addition of thiophene-2-formaldehyde must be strictly limited, if the addition of thiophene-2-formaldehyde is less than 0.2 weight portion, then cannot produce good effect to flatness; If the addition of thiophene-2-formaldehyde is greater than 0.3 weight portion, then excessive aldehyde radical easily with other resinous polymer generation side reactions, cause the aging of matt layer or sclerosis, the service life of serious reduction mould release membrance.
As the another embodiment of this case, wherein, matt layer also comprises the 2,6-DHBA of 0.2 ~ 0.3 weight portion.2,6-DHBA steeps ability and row's bubble speed for the row improving matt layer, but similar to its structure 2,6-4-dihydroxy benzaldehyde, 2,6-dihydroxybenzyl alcohol, 2,6-dihydroxyphenyl acetic acids, 2,6-dihydroxy benzenes and 2 hydroxybenzoic acid etc. all do not have this effect.And, 2, the introducing of 6-dihydroxy-benzoic acid must be very careful, its addition must be limited, if be less than 0.2 weight portion, then cannot produce substantial effect, if be greater than 0.3 weight portion, then 2,6-DHBA easily and PMMA particle generation ester exchange side reaction, thus have impact on the structural stability of matt layer, flatness and surface roughness.
Table one lists the concrete composition of the matt layer of different embodiment and the performance parameter of obtained mould release membrance thereof:
Table one
Table two lists the concrete composition of the matt layer of different comparative example and the performance parameter of obtained mould release membrance thereof:
Table two
Although embodiment of the present invention are open as above, but it is not restricted to listed in description and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details.
Claims (8)
1. a sub-light PET mould release membrance, it is provided with from top to bottom successively: the first pet layer, matt layer, parting agent layer, adhesive layer and the second pet layer; Described matt layer comprises the material of following weight portion:
Polyurethane resin 100 weight portion;
Silica 6 ~ 8 weight portion;
PMMA particle 3 ~ 4 weight portion;
Wherein, the number-average molecular weight of described polyurethane resin is 2900 ~ 3000g/mol;
The particle diameter of described silica is 80 ~ 90nm, and specific area is 40 ~ 45m
2/ g;
The particle diameter of described PMMA particle is 150 ~ 160nm, and number-average molecular weight is 1500 ~ 1600g/mol.
2. sub-light PET mould release membrance according to claim 1, it is characterized in that, described matt layer also comprises the nickel powder of 0.3 ~ 0.4 weight portion, and the particle diameter of described nickel powder is 80 ~ 90nm.
3. sub-light PET mould release membrance according to claim 1, it is characterized in that, described matt layer also comprises the dcpd resin of 2 ~ 3 weight portions.
4. sub-light PET mould release membrance according to claim 3, is characterized in that, the number-average molecular weight of described dcpd resin is 6300 ~ 6500g/mol.
5. sub-light PET mould release membrance according to claim 4, it is characterized in that, described matt layer also comprises the vinyl-vinyl acetate copolymer of 0.5 ~ 0.6 weight portion.
6. sub-light PET mould release membrance according to claim 5, is characterized in that, the number-average molecular weight of described vinyl-vinyl acetate copolymer is 1700 ~ 1800g/mol.
7. sub-light PET mould release membrance according to claim 6, it is characterized in that, described matt layer also comprises the thiophene-2-formaldehyde of 0.2 ~ 0.3 weight portion.
8. sub-light PET mould release membrance according to claim 7, it is characterized in that, described matt layer also comprises the 2,6-DHBA of 0.2 ~ 0.3 weight portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510293237.8A CN104972724B (en) | 2015-05-27 | 2015-05-27 | Matte PET release film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510293237.8A CN104972724B (en) | 2015-05-27 | 2015-05-27 | Matte PET release film |
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| Publication Number | Publication Date |
|---|---|
| CN104972724A true CN104972724A (en) | 2015-10-14 |
| CN104972724B CN104972724B (en) | 2017-05-03 |
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|---|---|---|---|
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5928834A (en) * | 1998-03-19 | 1999-07-27 | Agfa Corporation | Spot gloss film for color images |
| CN103709952A (en) * | 2013-12-31 | 2014-04-09 | 深圳市摩码科技有限公司 | Black matt rubber belt and making method thereof |
| CN103911085A (en) * | 2013-04-09 | 2014-07-09 | 北京康得新复合材料股份有限公司 | Biaxially oriented polyester matte precoat and preparation method thereof |
-
2015
- 2015-05-27 CN CN201510293237.8A patent/CN104972724B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5928834A (en) * | 1998-03-19 | 1999-07-27 | Agfa Corporation | Spot gloss film for color images |
| CN103911085A (en) * | 2013-04-09 | 2014-07-09 | 北京康得新复合材料股份有限公司 | Biaxially oriented polyester matte precoat and preparation method thereof |
| CN103709952A (en) * | 2013-12-31 | 2014-04-09 | 深圳市摩码科技有限公司 | Black matt rubber belt and making method thereof |
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| CN104972724B (en) | 2017-05-03 |
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Address after: 223900 Sihong Province Economic Development Zone, West Ocean Road, No. 6, No. Applicant after: Jiangsu Stick new materials Polytron Technologies Inc Address before: 215400 Taicang Economic Development Zone, Jiangsu, Qingdao West Road, No. 11, No. Applicant before: Suzhou Sidike New Material Science & Technology Co., Ltd. |
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