CN101254672A - Biaxial stretching polypropylene 9 mu m ultra thin type compound film and method of preparing the same - Google Patents
Biaxial stretching polypropylene 9 mu m ultra thin type compound film and method of preparing the same Download PDFInfo
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Abstract
The invention relates to a biaxial-tensile 9-mum ultra-thin composite polypropylene membrane, which comprises an upper surface layer, a middle layer and a lower surface layer, wherein each layer adopts homo-polypropylene as the base material. The composite membrane is characterized in that cross-linked methyl acrylate with a particle diameter of 2 mum is added into the homo-polypropylene base layer material of the upper and the lower surface layers at a ratio of 3.0 to 5.0% the total weight of the homo-polypropylene base layer material as an anti-adhesion material; and adding C9 hydrogenated petroleum resin into the homo-polypropylene base layer material of the middle layer at a ratio of 5 to 10% the total weight of the homo-polypropylene base layer material as a stiffening agent, adding oleamide with a ratio of 0.1 to 0.3% the total weight of the homo-polypropylene base layer material and adding alkyl(C14 to 18)bis(2-hydrox-yethyl)amine at a ratio of 0.1 to 0.3% the total weight of homo-polypropylene base layer material. The composite membrane has stiffness and no adhesion.
Description
Technical field
The present invention relates to a kind of Biaxially oriented polypropylene composite membrane, especially relate to a kind of Biaxially oriented polypropylene 99 mu m ultra thin type compound films and preparation method thereof.Belong to field of packaging material.
Background technology
Along with rapid development of economy, the social demand of Biaxially oriented polypropylene composite membrane increases rapidly thereupon.The international market crude oil price grows steadily in the recent period, impels raw material PP (polypropylene) particle and film price also in rising trend, and the production cost that makes the composite membrane that occupies the market share 1/3 try out producer significantly improves.At present, adopt the biaxial tension laminated film thickness of stretch processes technology production on the market all in 12～18 mu m ranges.If can reduce the thickness of biaxial tension laminated film, just can reduce the production cost of composite membrane.But the thickness as one-side reduction biaxial tension laminated film will reduce laminated film elastic modelling quantity, deflection, influences anti-adhesion, the antistatic effect of film.Properties of product just do not reach instructions for use.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of high-stiffness, NA Biaxially oriented polypropylene 99 mu m ultra thin type compound films and preparation method thereof are provided.
The object of the present invention is achieved like this: a kind of Biaxially oriented polypropylene 99 mu m ultra thin type compound films, be divided into upper epidermis, intermediate layer and following top layer three-decker, and every layer all is base material with the HOPP,
Add in two top layer HOPP base materials up and down that to account for HOPP base material gross weight 3.0～5.0% particle diameters be that the cross-linked acrylic acid methyl esters of 1～3 μ m is as anti-stick glutinous material;
In the HOPP base material of intermediate layer, add the C9 hydrogenated petroleum resin that accounts for HOPP base material gross weight 5～10%, add the oleamide that accounts for HOPP base material gross weight 0.1～0.3%, and adding accounts for 0.1～0.3% alkyl (C14-18) two (2-ethoxy) amine of HOPP base material gross weight
The preparation method of Biaxially oriented polypropylene 99 mu m ultra thin type compound films of the present invention, described method step is as follows successively: prepare burden, extrude sheet, casting sheet, longitudinal stretching, cross directional stretch and rolling, described longitudinal stretching ratio is 4.50～5.50, the cross directional stretch ratio is 6.50～8.00, and in the longitudinal stretching process, preheat temperature is 130～140 ℃, draft temperature is 120～130 ℃, cross directional stretch process, preheat temperature are 160～170 ℃, and draft temperature is 150～160 ℃.
The upper and lower layer thickness of 9 μ m composite membranes as thin as a wafer, in the client's use of downstream, the easy more adhesion of the product that thickness is thin more causes disconnected film influence to be produced.Therefore, when producing 9 μ m composite membranes, add the cross-linked acrylic acid methyl esters, increase the top layer roughness, make between layer and the layer and accompany air, play the effect of anti-adhesion on the top layer, adhesion during uncoiling, more smooth and easy; And the cross-linked acrylic acid methyl esters contains unsatisfied chemical bond, can be better and the polypropylene molecule chain combination, and reduce and produce and the downstream adds to deviate from man-hour, reduced pollution to roll surface.
The intermediate layer of 9 μ m composite membranes adds alkyl (C14-18) two (2-ethoxy) amine, makes film that long-acting antistatic effect be arranged.Because thin gauge film adds the easy stored charge in surface in man-hour in the downstream, produce static, influence is used, and has added alkyl (C14-18) two (2-ethoxy) amine, can improve the antistatic property of film surface; Add the C9 hydrogenated petroleum resin, increase the degree of crystallinity of film, improve the elastic modelling quantity (deflection) of product, also improved glossiness simultaneously, reduce mist degree, improved the optical property of film, also improved the barrier property of blister-pack aqueous vapor.The 9 μ m composite membranes (sample 1) that do not add the C9 hydrogenated petroleum resin, the 9 μ m composite membranes (sample 2) that add the 8%C9 Petropols and the performance indications of 12 μ m composite membranes (sample 3) have been done contrast, as table one.
Three groups of sample physical properties of table one table of comparisons
To sum up, the 9 μ m Biaxially oriented polypropylene composite membranes that the present invention produces have the characteristics of good tensile, high elastic modulus, high gloss, low haze, and film self layer with layer between adhesion, uncoiling is smooth and easy during use.Can be used as the base film of paper printing, technology such as compound, both reached and the equal effect of 12 μ m Biaxially oriented polypropylene composite membranes, saved rapidoprint again greatly.
The specific embodiment
Biaxially oriented polypropylene 99 mu m ultra thin type compound films involved in the present invention, be divided into upper epidermis, intermediate layer and following top layer three-decker, upper epidermis thickness is 0.8～1.0 μ m in the three-decker, intermediate layer thickness is 7.0～7.4 μ m, following skin depth is 0.8～1.0 μ m, and the percentage that each component accounts for this layer gross weight in each layer is respectively:
Upper epidermis and following top layer: HOPP 95.0～97.0%, particle diameter is at the cross-linked acrylic acid methyl esters 3.0～5.0% of 2 μ m.
The intermediate layer: HOPP 89.4～94.8%, C9 hydrogenated petroleum resin 5～10%, oleamide 0.1～0.3%, 0.1～0.3% alkyl (C14-18) two (2-ethoxy) amine,
Embodiment 1:
1) batching
Upper epidermis and following top layer: take by weighing the 96.5kg HOPP, cross-linked acrylic acid methyl esters 3.5kg.
Intermediate layer: take by weighing the 91.6kg HOPP, C9 hydrogenated petroleum resin 8.0kg, two (2-ethoxy) amine of 0.2kg alkyl (C14-18) and 0.2kg oleamide 0.1～0.3%.
2) extrude sheet
3) casting sheet
4) longitudinal stretching
Longitudinal stretching is 4.50 times, and in the longitudinal stretching process, preheat temperature is 130～140 ℃, and draft temperature is 120～130 ℃.
5) cross directional stretch
Cross directional stretch is 7.80 times, and cross directional stretch process, preheat temperature are 160～170 ℃, and draft temperature is 150～160 ℃.
6) rolling.
Embodiment 2:
1) batching
Upper epidermis: take by weighing the 96.0kg HOPP, cross-linked acrylic acid methyl esters 4.0kg.
Following top layer: take by weighing the 97.0kg HOPP, cross-linked acrylic acid methyl esters 3.0kg.
Intermediate layer: take by weighing the 92.6kg HOPP, 7.0kgC9 hydrogenated petroleum resin, 0.1kg oleamide and 0.3kg alkyl (C14-18) two (2-ethoxy) amine.
2) extrude sheet
3) casting sheet
4) longitudinal stretching
The longitudinal stretching ratio is 4.80, and in the longitudinal stretching process, preheat temperature is 130～140 ℃, and draft temperature is 120～130 ℃.
5) cross directional stretch
The cross directional stretch ratio is 7.50, and cross directional stretch process, preheat temperature are 160～170 ℃, and draft temperature is 150～160 ℃.
6) rolling.
Claims (2)
1, a kind of Biaxially oriented polypropylene 99 mu m ultra thin type compound films are divided into upper epidermis, intermediate layer and following top layer three-decker, and every layer is base material with the HOPP all, it is characterized in that:
Add in two top layer HOPP base materials up and down that to account for HOPP base material gross weight 3.0～5.0% particle diameters be that the cross-linked acrylic acid methyl esters of 2 μ m is as anti-adhering material;
In the HOPP base material of intermediate layer, add and account for the C9 hydrogenated petroleum resin of HOPP base material gross weight 5～10% as intensity strengthening agent, add the oleamide that accounts for HOPP base material gross weight 0.1～0.3%, and add alkyl (C14-18) two (2-ethoxy) amine that accounts for HOPP base material gross weight 0.1～0.3%.
2, a kind of preparation method of Biaxially oriented polypropylene as claimed in claim 199 mu m ultra thin type compound films, it is characterized in that: described method step is as follows successively: prepare burden, extrude sheet, casting sheet, longitudinal stretching, cross directional stretch and rolling, described longitudinal stretching ratio is 4.50～5.50, the cross directional stretch ratio is 6.50～8.00, in the longitudinal stretching process, preheat temperature is 130～140 ℃, draft temperature is 120～130 ℃, the cross directional stretch process, preheat temperature is 160～170 ℃, and draft temperature is 150～160 ℃.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103538325A (en) * | 2012-07-10 | 2014-01-29 | 湖北富思特材料科技集团有限公司 | B0PP (biaxially-oriented polypropylene) extrusion coating membrane |
| CN107351496A (en) * | 2017-07-17 | 2017-11-17 | 安徽国风塑业股份有限公司 | A kind of high-barrier type biaxial tension co-extrusion film and preparation method |
| CN108943940A (en) * | 2018-08-01 | 2018-12-07 | 宁波瑞成包装材料有限公司 | High-barrier visible heavy packaging composite film and production method thereof |
| CN109228580A (en) * | 2018-08-01 | 2019-01-18 | 宁波瑞成包装材料有限公司 | High-stiffness ultrathin paper towel packaging film and production method thereof |
| CN109705446A (en) * | 2018-12-27 | 2019-05-03 | 佛山佛塑科技集团股份有限公司 | A kind of modified polyolefin mother material and its preparation method and application |
| CN111844984A (en) * | 2020-07-15 | 2020-10-30 | 珠海嘉雄包装材料有限公司 | Three-layer co-extrusion-stretching high-temperature-resistant tear-resistant composite film and preparation method thereof |
-
2008
- 2008-03-20 CN CN2008100200110A patent/CN101254672B/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103538325A (en) * | 2012-07-10 | 2014-01-29 | 湖北富思特材料科技集团有限公司 | B0PP (biaxially-oriented polypropylene) extrusion coating membrane |
| CN103538325B (en) * | 2012-07-10 | 2015-06-17 | 湖北富思特材料科技集团有限公司 | B0PP (biaxially-oriented polypropylene) extrusion coating membrane |
| CN107351496A (en) * | 2017-07-17 | 2017-11-17 | 安徽国风塑业股份有限公司 | A kind of high-barrier type biaxial tension co-extrusion film and preparation method |
| CN107351496B (en) * | 2017-07-17 | 2019-06-07 | 安徽国风塑业股份有限公司 | A kind of high-barrier type biaxial tension co-extrusion film and preparation method |
| CN108943940A (en) * | 2018-08-01 | 2018-12-07 | 宁波瑞成包装材料有限公司 | High-barrier visible heavy packaging composite film and production method thereof |
| CN109228580A (en) * | 2018-08-01 | 2019-01-18 | 宁波瑞成包装材料有限公司 | High-stiffness ultrathin paper towel packaging film and production method thereof |
| CN109705446A (en) * | 2018-12-27 | 2019-05-03 | 佛山佛塑科技集团股份有限公司 | A kind of modified polyolefin mother material and its preparation method and application |
| CN111844984A (en) * | 2020-07-15 | 2020-10-30 | 珠海嘉雄包装材料有限公司 | Three-layer co-extrusion-stretching high-temperature-resistant tear-resistant composite film and preparation method thereof |
| CN111844984B (en) * | 2020-07-15 | 2022-05-13 | 珠海嘉雄包装材料有限公司 | Three-layer co-extrusion stretched high-temperature-resistant tear-resistant composite film and preparation method thereof |
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|---|---|
| CN101254672B (en) | 2011-05-25 |
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