CN107554024A - A kind of mould release membrance and preparation method thereof - Google Patents
A kind of mould release membrance and preparation method thereof Download PDFInfo
- Publication number
- CN107554024A CN107554024A CN201710780889.3A CN201710780889A CN107554024A CN 107554024 A CN107554024 A CN 107554024A CN 201710780889 A CN201710780889 A CN 201710780889A CN 107554024 A CN107554024 A CN 107554024A
- Authority
- CN
- China
- Prior art keywords
- layer
- polypropylene
- white
- polypropylene layer
- release membrance
- Prior art date
- 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.)
- Pending
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- -1 polypropylene Polymers 0.000 claims abstract description 97
- 239000004743 Polypropylene Substances 0.000 claims abstract description 95
- 229920001155 polypropylene Polymers 0.000 claims abstract description 95
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 229920002545 silicone oil Polymers 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 238000003475 lamination Methods 0.000 claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- 229920000728 polyester Polymers 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 6
- 150000001336 alkenes Chemical class 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 238000005187 foaming Methods 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 229910052710 silicon Inorganic materials 0.000 abstract description 6
- 239000010703 silicon Substances 0.000 abstract description 6
- 238000002386 leaching Methods 0.000 abstract description 5
- 210000004379 membrane Anatomy 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 abstract description 4
- 239000004033 plastic Substances 0.000 abstract description 4
- 229920003023 plastic Polymers 0.000 abstract description 4
- 210000002469 basement membrane Anatomy 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 4
- 229920001131 Pulp (paper) Polymers 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 3
- 239000008240 homogeneous mixture Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007766 curtain coating Methods 0.000 description 2
- 210000002615 epidermis Anatomy 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a kind of mould release membrance and preparation method thereof, the mould release membrance, it is characterised in that possess：The release coating of substrate layer, silicone oil；The substrate layer lamination polypropylene layer, white polypropylene layer, polypropylene expanded layer, white polypropylene layer, functional form polypropylene layer successively, the release coating lamination of silicone oil is on the outermost polypropylene layer as substrate layer；Substrate layer proportion is 0.7g/cm3Below.The mould release membrance of the present invention overcomes traditional leaching membrane paper not folding, crease easily and easily occur imprinting the defects of, while be not required to film technical process, silicon directly applied by basement membrane and is made, production process is simplified, improves yield.The unrenewable shortcoming of the release base stock of traditional paper-plastic stick is overcome simultaneously, can very be recycled.
Description
Technical field
The present invention relates to polymeric film art, and in particular to a kind of mould release membrance and preparation method thereof.
Background technology
At present, the mould release membrance of in the market uses paper-plastic stick release liners mostly, and its base stock typically uses common wood pulp paper
Apply silicon after film to be made, plain paper creases easily, not folding, easily imprints, and can not directly apply silicon, it is necessary to leaching in advance
It can be just coated after film.Using the release liners not only complex process of this technique productions, and the peel strength of release liners by
It is limited to film this technical process.The complexity of technique improves fraction defective, has also increased cost.Leaching membrane paper typically uses wood pulp
As film base material, the process of production itself needs to consume a large amount of timber body paper, and largely produces waste water, easily causes environment dirt
Dye, it is often more important that, the release base stock of paper-plastic stick can not reclaim substantially once use is finished and can only abandoned, and this will produce a large amount of
Trade waste, seriously pollute environment.
The content of the invention
To solve problems of the prior art, the present invention provides a kind of mould release membrance, it is therefore an objective to solves not folding, Yi Qi
Wrinkle, easily there is the problems such as impressing, not environmentally friendly enough, specifically, it is an object of the invention to provide a kind of returning for polypropylene material
Receive mould release membrance, it overcomes traditional leaching membrane paper not folding, crease easily and easily occur imprinting the defects of, while be not required to film
Technical process, silicon is directly applied by basement membrane and is made, production process is simplified, improves yield.Overcome traditional paper simultaneously
The compound unrenewable shortcoming of release base stock, can very be recycled.
Specifically, the present invention provides a kind of mould release membrance, and it possesses：The release coating of substrate layer, silicone oil；
The substrate layer from top to bottom successively lamination polypropylene layer, white polypropylene layer, polypropylene expanded layer, white poly- third
Alkene layer, functional form polypropylene layer, the release coating lamination of silicone oil is on the outermost polypropylene layer as substrate layer；Base material
Layer proportion is 0.7g/cm3Below.
Wherein, the polypropylene layer, white polypropylene layer, the polyester foamed layer of polypropylene, white polypropylene layer, functional form gather
The thickness of propylene layer is respectively 3-4 μm, 6-8 μm, 3-8 μm, 6-8 μm, 3-4 μm；The thickness of the release coating of silicone oil is 1-2 μ
m。
In addition, the polypropylene layer, white polypropylene layer, the polyester foamed layer of polypropylene, white polypropylene layer, functional form gather
Preferably 3 μm, 8 μm, 3 μm, 8 μm, 4 μm respectively of the thickness of propylene layer；Preferably 1 μm of the thickness of the release coating of silicone oil.
In addition, the polypropylene in the polypropylene layer is made up of the common film grade polypropylene of in the market.
In addition, the white polypropylene layer be by weight ratio be 5:1 polypropylene is made with white master material.
In addition, the polypropylene expanded layer be by weight ratio be 8:1 polypropylene is made with polyester foamed dose.
Described polyester foamed dose can be in polyethylene terephthalate or polybutylene terephthalate (PBT) etc.
It is one or more of.
In addition, the functional form polypropylene layer is by delustring polypropylene, COPP or low-temperature heat-sealing type polypropylene
One kind is made.
The present invention also provides a kind of preparation method of mould release membrance as described above, and it comprises the steps：
(1) by each raw material according to polypropylene layer, white polypropylene layer, polypropylene expanded layer, white polypropylene layer, functional form
The order of polypropylene layer goes out through five layers of T-shaped mould coextrusion head, is cast at 50 DEG C, cooling；
(2) longitudinal stretching and cross directional stretch are carried out, wherein, 140 DEG C of longitudinal drawing temperature, 5 times of stretching ratio；Cross directional stretch
170 DEG C of temperature, 8 times of stretching ratio；
(3) cool down, corona；
(4) silicone oil is coated with polypropylene layer.
Wherein, in step (1), the extrusion temperature of the polypropylene layer is 250 DEG C, the extrusion of the white polypropylene layer
Temperature is 240 DEG C, the extrusion temperature of the polypropylene expanded layer is 230 DEG C, the extrusion temperature of the functional form polypropylene layer is
245℃.The extrusion temperature of five layers of T-shaped mould head is 230 DEG C.
The present invention is made by applying silicon in base material layer surface.The new mould release membrance is made using stretch processes, i.e.,
The raw materials such as the polypropylene after melting are extruded through five-layer co-squeezing T-shaped mould head, its upper epidermis is polypropylene, and layer is according to client
The functional form polypropylene for needing and using, secondary top layer are the polypropylene of addition white master material.Sandwich layer is then used mixed with polyester foamed
The polypropylene of agent.After five layers of melt through die are extruded, by curtain coating, longitudinal stretching, cross directional stretch finally cools down corona winding
New organic mould release membrance can be obtained, such substrate layer possesses deflection height, resistant to bending, the features such as not creasing easily, and can
To be directly coated with silicone oil, without other film.Low using mould release membrance off-type force made of such a technique, product quality is stable.
Different from traditional leaching membrane paper, raw material produced by the invention uses the acrylic resin that can be degraded to gather as base material
Ester does not produce any environmental contaminants as foaming agent, itself and catabolite.Production process is nearly free from any poisonous
Harmful substance, environmental pollution is avoided in terms of raw material and production process two, avoided in traditional film paper base material production process
Discharge of wastewater, decrease the consumption of wood pulp paper, protect the forest reserves of increasingly reduction, be a kind of complete environment-friendly
Product.Prior is due to all using polypropylene material, and mould release membrance is once finish can very recycling for use
Or be granulated again, the shortcomings that overcoming traditional paper-plastic stick release base stock recycling difficulty, further reduce Industry Waste
The discharge of thing.
Brief description of the drawings
Fig. 1 is the structural representation of mould release membrance of the present invention.
Fig. 2 is the production technological process of mould release membrance of the present invention.
Description of reference numerals
1. polypropylene layer；2. white polypropylene layer；3. polypropylene expanded layer；4. white polypropylene layer；5. functional form poly- third
Alkene layer；6. substrate layer；7. the release coating of silicone oil；
Embodiment
Technical solution of the present invention is discussed in detail below in conjunction with the accompanying drawings, but the present invention is not limited to this.
Fig. 1 is the structural representation of mould release membrance of the present invention.As shown in figure 1, the mould release membrance of the present invention, possesses substrate layer 6, silicon
The release coating 7 of oil.
Substrate layer 6 includes the polypropylene layer 1 of lamination, white polypropylene layer 2, polypropylene expanded layer 3, white polypropylene successively
Layer 4, functional form polypropylene layer 5, the release lamination of coating 7 of silicone oil is on the outermost polypropylene layer 1 as substrate layer.
Fig. 2 is the production technological process of mould release membrance of the present invention.
Wherein, specific implementation is exemplified as：
It is as shown in Fig. 2 film grade polypropylene (Yangtze petrochemical industry PPHF03D), polypropylene and white master material (U.S. connection W2335) is mixed
Compound, polypropylene mix with polyester foamed dose of (can not provide the trade mark) mixture, polypropylene with white master material (U.S. connection W2335)
Thing, functional form polypropylene (delustring polypropylene (the superior XG0010 in Jiangyin)) melt and in five layers of T-shaped mould head respectively by extruder
In extrude in the lump.
Upper epidermis uses film grade polypropylene, and extrusion temperature is 250 DEG C, 3 μm of thickness；
Last time top layer using weight ratio be 5:1 polypropylene and the homogeneous mixture of white master material, extrusion temperature 240
DEG C, 8 μm of thickness；
Centre uses weight ratio as 8:1 polypropylene and polyester foamed dose of homogeneous mixture, extrusion temperature is 230 DEG C,
3 μm of thickness；
Next top layer is 5 using weight ratio:1 polypropylene and the homogeneous mixture of white master material, extrusion temperature 240
DEG C, 8 μm of thickness；
Layer is employed as the extraordinary polyacrylic delustring polypropylene of functional form, and extrusion temperature is 245 DEG C, and thickness is 4 μm.
In addition, the extrusion temperature of five layers of T-shaped mould head is 230 DEG C.
After above-mentioned raw materials are melted respectively by extruder and are extruded in the lump in five layers of T-shaped mould head, it is cast, cools down, indulges
Substrate layer is made to technical process such as stretching, cross directional stretch, cooling, corona, windings.Then substrate layer is cut again, applied
Cloth silicone oil, it is finally made the mould release membrance of the present invention.
Wherein casting temperature is 50 DEG C, is exchanged heat using water cooling.Longitudinal stretching attaches heating, heat transfer temperature 140 using roller
DEG C, 5 times of stretching ratio, 170 DEG C of transverse drawing temperature, 8 times of stretching ratio, mould release membrance of the invention is made.
Melt is by curtain coating slab, 5 times of longitudinal stretching, 8 times of cross directional stretch.Polyester foamed dose is stretched in this process
Space is formed so as to obtain the structure of foaming so that the proportion of mould release membrance drops to 0.7g/cm3Hereinafter, cost is reduced.Together
Shi Lashen manufacturing method thereof makes substrate layer obtain the tensile strength of common bidirectional stretching polypropylene film, the addition of white master material
Improve the covering performance of substrate layer.
Test example
The proportion of substrate layer is 0.7g/cm in above-mentioned mould release membrance3Below；Surveyed according further to national standard TASA7475 adhesive tapes
Determine off-type force, test result is as follows：Off-type force initial bonding strength is less than 100g, is less than 120g after stable 4h, stabilization is less than within 24 hours
150g.Method of testing is carried out with reference to national standard, and specific standards are：TESA7475 adhesive tapes are affixed on tested mould release membrance by standard method
On, it is slitting by adhesive tape shape, 24 hours (20 grams/cm) are pressed with standard stainless steel, with release test machine (KT-
1056 release force testers) test draw rapidly degree be 300mm/min, pulling force when to draw refreshing angle be 180 degree had both been off-type force.
Claims (8)
1. a kind of mould release membrance, it is characterised in that possess：The release coating of substrate layer, silicone oil；
The substrate layer lamination polypropylene layer, white polypropylene layer, polypropylene expanded layer, white polypropylene successively from top to bottom
Layer, functional form polypropylene layer, the release coating lamination of silicone oil is on the outermost polypropylene layer as substrate layer；The base
Material layer proportion is 0.7g/cm3Below.
2. mould release membrance according to claim 1, it is characterised in that the polypropylene layer, white polypropylene layer, polypropylene gather
Ester foaming layer, white polypropylene layer, the thickness of functional form polypropylene layer are respectively 3-4 μm, 6-8 μm, 3-8 μm, 6-8 μm, 3-4 μ
m；The thickness of the release coating of silicone oil is 1-2 μm.
3. mould release membrance according to claim 1, it is characterised in that the white polypropylene layer be by weight ratio be 5:1
Polypropylene is made with white master material.
4. mould release membrance according to claim 1, it is characterised in that the polypropylene expanded layer be by weight ratio be 8:1
Polypropylene is made with polyester foamed dose.
5. mould release membrance according to claim 1, it is characterised in that the functional form polypropylene layer by delustring polypropylene, altogether
One kind in poly- polypropylene or low-temperature heat-sealing type polypropylene is made.
6. the preparation method of the mould release membrance in a kind of 1-5 such as claim as described in any one, it is characterised in that including following steps
Suddenly：
(1) by each raw material according to polypropylene layer, white polypropylene layer, polypropylene expanded layer, white polypropylene layer, functional form poly- third
The order of alkene layer goes out through five layers of T-shaped mould coextrusion head, is cast at 50 DEG C, cooling；
(2) longitudinal stretching and cross directional stretch are carried out, wherein, 140 DEG C of longitudinal drawing temperature, 5 times of stretching ratio；Transverse drawing temperature
170 DEG C, 8 times of stretching ratio；
(3) cool down, corona；
(4) silicone oil is coated with polypropylene layer.
7. preparation method according to claim 6, it is characterised in that in step (1),
The extrusion temperature of the polypropylene layer is 250 DEG C, the extrusion temperature of the white polypropylene layer is 240 DEG C, described poly- third
The extrusion temperature of alkene foaming layer is 230 DEG C, the extrusion temperature of the functional form polypropylene layer is 245 DEG C.
8. preparation method according to claim 6, it is characterised in that the extrusion temperature of five layers of T-shaped mould head is 230 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710780889.3A CN107554024A (en) | 2017-09-01 | 2017-09-01 | A kind of mould release membrance and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710780889.3A CN107554024A (en) | 2017-09-01 | 2017-09-01 | A kind of mould release membrance and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107554024A true CN107554024A (en) | 2018-01-09 |
Family
ID=60978816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710780889.3A Pending CN107554024A (en) | 2017-09-01 | 2017-09-01 | A kind of mould release membrance and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107554024A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024088A (en) * | 2018-07-20 | 2018-12-18 | 无锡和烁丰新材料有限公司 | A kind of formula and its manufacturing process of Ultra-low Specific weight synthetic paper |
| CN110527452A (en) * | 2019-09-02 | 2019-12-03 | 东莞市宇川塑胶制品有限公司 | Multi-layer co-extruded release film |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693395A (en) * | 2005-06-16 | 2005-11-09 | 海南赛诺实业有限公司 | Separated coating film and its preparation process |
| CN102825883A (en) * | 2012-08-31 | 2012-12-19 | 浙江大东南包装股份有限公司 | BOPP synthetie paper and manufacturing method |
-
2017
- 2017-09-01 CN CN201710780889.3A patent/CN107554024A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693395A (en) * | 2005-06-16 | 2005-11-09 | 海南赛诺实业有限公司 | Separated coating film and its preparation process |
| CN102825883A (en) * | 2012-08-31 | 2012-12-19 | 浙江大东南包装股份有限公司 | BOPP synthetie paper and manufacturing method |
Non-Patent Citations (1)
| Title |
|---|
| 李良主编: "《食品包装学》", 中国轻工业出版社, pages: 88 - 89 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024088A (en) * | 2018-07-20 | 2018-12-18 | 无锡和烁丰新材料有限公司 | A kind of formula and its manufacturing process of Ultra-low Specific weight synthetic paper |
| CN110527452A (en) * | 2019-09-02 | 2019-12-03 | 东莞市宇川塑胶制品有限公司 | Multi-layer co-extruded release film |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20180109 |