CN102673060A - Highly-smooth polyethylene film and manufacturing method thereof - Google Patents
Highly-smooth polyethylene film and manufacturing method thereof Download PDFInfo
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- CN102673060A CN102673060A CN2012101633445A CN201210163344A CN102673060A CN 102673060 A CN102673060 A CN 102673060A CN 2012101633445 A CN2012101633445 A CN 2012101633445A CN 201210163344 A CN201210163344 A CN 201210163344A CN 102673060 A CN102673060 A CN 102673060A
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Abstract
The invention discloses a highly-smooth polyethylene film and a manufacturing method thereof. The highly-smooth polyethylene film comprises an outer layer, a middle layer and an inner layer. The outer layer is made of, by weight ratio, 10:90-90:10 of low-density polyethylene and linear low-density polyethylene. The middle layer is made of, by weight ratio, 10:90-90:10 of low-density polyethylene and linear low-density polyethylene. The inner layer is made of, by weight ratio, 50:50:0.5-50:50:10 of low-density polyethylene, linear low-density polyethylene and anti-plastering agents. The manufacturing method includes mixing the outer layer, the middle layer and the inner layer by a quantitative batcher, adding the layers to an extruder to be subjected to plastifying extrusion, extruding the layers into film tubes by triple coextrusion die heads, and wrapping up the layers after the layers are blown up. Compared with the prior art, the highly-smooth polyethylene film is more precise and stable in friction coefficient and well solves the problems of slipping of composite films on a package machine and slipping agent precipitation.
Description
Technical field
The present invention relates to flexible packaging film and preparation method thereof, relate in particular to a kind of high smooth polyethylene film and preparation method thereof.
Background technology
Polyethylene film mainly is used as the hot sealing layer of composite membrane as a kind of flexible package composite material, have quality softness, density little, be prone to seal, cost is low, be prone to advantages such as machine-shaping, thereby use very extensively.At present, many package compound films consumption producer is when using with polyethylene film to the volume membrane material of hot sealing layer, and film volume internal layer is often of a specified duration because of standing time; Under the situation such as the rolling of volume film is improper; Inorganic slipping agent in the polyethylene becomes to analyze serious, causes the inside and outside composite membrane coefficient of friction of composite membrane volume uneven, and skidding appears in composite membrane easily on packing machine; Influence ordinary production, cause unnecessary wasting phenomenon simultaneously.The patent No. like China national Department of Intellectual Property bulletin is 200910116112.2; Name is called a kind of patent of invention of self-lubricating polyethylene membrane, and its disclosed polyethylene film adopts low density polyethylene (LDPE), LLDPE, metallocene linear-low density polyethylene, erucyl amide or its substituent, the moulding of auxiliary agent coextrusion film blowing.Though this invention can reduce the coefficient of friction of film; But because erucyl amide or its substituent are low-molecular-weight inorganic matter; Its smooth effect leans on the slipping agent molecule to decide to the migration of film surface; Because in the process of compound rolling of film and packing production, this kind slipping agent amount of separating out inside and outside the film volume can inhomogeneously cause the widely different of coefficient of friction, thereby normal packing of influence produced.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of high smooth polyethylene film and preparation method thereof is provided.
High smooth polyethylene film comprises skin, middle level, the internal layer that connects in order; Wherein, Outer is that low density polyethylene (LDPE) and the LLDPE of 10:90～90:10 formed by mass ratio, and the middle level is that low density polyethylene (LDPE) and the LLDPE of 10:90～90:10 formed by mass ratio; Internal layer is that 50:50:0.5～50:50:10 low density polyethylene (LDPE), LLDPE and the smooth antiplastering aid of organosilicon are formed by mass ratio, and the smooth antiplastering aid of organosilicon is that molecular weight surpasses 500,000 dimethyl silicone polymer.
The thickness ratio of described skin, middle level, internal layer is: 1:1:1～1:3:1, gross thickness is 20～150 microns.
The preparation method of high smooth polyethylene film is: will be that low density polyethylene (LDPE) and the LLDPE of 10:90～90:10 is as skin by mass ratio; By mass ratio is that low density polyethylene (LDPE) and the LLDPE of 10:90～90:10 is as the middle level; By weight ratio is that the smooth antiplastering aid of low density polyethylene (LDPE), LLDPE and organosilicon of 50:50:0.5～50:50:10 is as internal layer; Mixed through the quantitative ingredient device respectively, the adding extruder plastifies to be extruded, through triple extrusion die head extruded film pipe; Rolling behind inflation obtains high smooth polyethylene film.
The smooth antiplastering aid of organosilicon that the present invention adopts is to be processed by the super high molecular weight siloxanes.This slipping agent is evenly distributed in polyethylene film and is stable, and can not change and move with external condition, thereby stable friction factor when making composite membrane have high smooth property; Through the ratio of reasonable interpolation organosilicon slipping agent, can control the coefficient of friction of composite membrane accurately; The interpolation of said slipping agent simultaneously can not cause the composite membrane peel strength to descend; Thereby the present invention can solve composite membrane since in the volume external friction uneven caused transmit and packaging facilities on phenomenon such as skid.
Description of drawings
The following accompanying drawing that combines is described further the present invention:
Fig. 1 is the structural representation of high smooth polyethylene film.
The specific embodiment
As shown in Figure 1; High smooth polyethylene film comprises skin 1, middle level 2, the internal layer 3 that connects in order; Wherein, Outer is that low density polyethylene (LDPE) and the LLDPE of 10:90～90:10 formed by mass ratio, and the middle level is that low density polyethylene (LDPE) and the LLDPE of 10:90～90:10 formed by mass ratio; Internal layer is that 50:50:0.5～50:50:10 low density polyethylene (LDPE), LLDPE and the smooth antiplastering aid of organosilicon are formed by mass ratio, and the smooth antiplastering aid of organosilicon is that molecular weight surpasses 500,000 dimethyl silicone polymer.
The thickness ratio of described skin, middle level, internal layer is: 1:1:1～1:3:1, gross thickness is 20～150 microns.
The preparation method of high smooth polyethylene film is: will be that low density polyethylene (LDPE) and the LLDPE of 10:90～90:10 is as skin by mass ratio; By mass ratio is that low density polyethylene (LDPE) and the LLDPE of 10:90～90:10 is as the middle level; By weight ratio is that the smooth antiplastering aid of low density polyethylene (LDPE), LLDPE and organosilicon of 50:50:0.5～50:50:10 is as internal layer; Mixed through the quantitative ingredient device respectively, the adding extruder plastifies to be extruded, through triple extrusion die head extruded film pipe; Rolling behind inflation obtains high smooth polyethylene film.
The present invention uses multi-layer co-extruded blow moulding equipment and processes, comprises following operation: operation, inflation traction operation, vane refrigerating work procedure, herringbone clamping plate operation, carry-over pinch rolls traction operation, corona treatment operation, film take-up operation are extruded in spice operation, charging process, plasticizing.
Get the low density polyethylene (LDPE) and the LLDPE of outer usefulness, mass ratio is: 50%:50%;
Get low density polyethylene (LDPE) and the LLDPE used in the middle level, mass ratio is: 50%:50%;
Get the smooth antiplastering aid of low density polyethylene (LDPE), LLDPE and organosilicon that internal layer is used, weight ratio is: 50%:50%:4%;
Described skin, middle level, internal layer, thickness ratio are: 1:2:1; 70 microns of film thicknesses.
The material of above proportioning with multi-layer co-extruded blow moulding equipment and processes, is comprised following operation: operation, inflation traction operation, vane refrigerating work procedure, herringbone clamping plate operation, carry-over pinch rolls traction operation, corona treatment operation, film take-up operation are extruded in spice operation, charging process, plasticizing.
The coefficient of friction of this film changes like following table:
Get the low density polyethylene (LDPE) and the LLDPE of outer usefulness, mass ratio is: 10%:90%;
Get low density polyethylene (LDPE) and the LLDPE used in the middle level, mass ratio is: 90%:10%;
Get the smooth antiplastering aid of low density polyethylene (LDPE), LLDPE, metallocene linear-low density polyethylene and organosilicon that internal layer is used, weight ratio is: 50%:50%:2%;
Described skin, middle level, internal layer, thickness ratio are: 1:1:1; 20 microns of film thicknesses.
The material of above proportioning with multi-layer co-extruded blow moulding equipment and processes, is comprised following operation: operation, inflation traction operation, vane refrigerating work procedure, herringbone clamping plate operation, carry-over pinch rolls traction operation, corona treatment operation, film take-up operation are extruded in spice operation, charging process, plasticizing.
The coefficient of friction of this film changes like following table:
Get the low density polyethylene (LDPE) and the LLDPE of outer usefulness, mass ratio is: 90%:10%:;
Get low density polyethylene (LDPE) and the LLDPE used in the middle level, mass ratio is: 10%:90%;
Get the smooth antiplastering aid of low density polyethylene (LDPE), LLDPE, metallocene linear-low density polyethylene and organosilicon that internal layer is used, weight ratio is: 50%:50%:6%;
Described skin, middle level, internal layer, thickness ratio are: 1:3:1; 150 microns of film thicknesses.
The material of above proportioning with multi-layer co-extruded blow moulding equipment and processes, is comprised following operation: operation, inflation traction operation, vane refrigerating work procedure, herringbone clamping plate operation, carry-over pinch rolls traction operation, corona treatment operation, film take-up operation are extruded in spice operation, charging process, plasticizing.
The coefficient of friction of this film changes like following table:
Claims (3)
1. one kind high smooth polyethylene film; It is characterized in that comprising the skin (1), middle level (2), the internal layer (3) that connect in order; Wherein, Outer is that low density polyethylene (LDPE) and the LLDPE of 10:90～90:10 formed by mass ratio, and the middle level is that low density polyethylene (LDPE) and the LLDPE of 10:90～90:10 formed by mass ratio; Internal layer is that 50:50:0.5～50:50:10 low density polyethylene (LDPE), LLDPE and the smooth antiplastering aid of organosilicon are formed by mass ratio, and the smooth antiplastering aid of organosilicon is to be surpassed 500,000 dimethyl silicone polymer by molecular weight.
2. a kind of high smooth polyethylene film according to claim 1, it is characterized in that the thickness ratio of described skin, middle level, internal layer is: 1:1:1～1:3:1, gross thickness is 20～150 microns.
3. preparation method of high smooth polyethylene film according to claim 1; It is characterized in that to be that low density polyethylene (LDPE) and the LLDPE of 10:90～90:10 is as skin by mass ratio; By mass ratio be low density polyethylene (LDPE) and the LLDPE of 10:90～90:10 as the middle level, by weight ratio be the smooth antiplastering aid of low density polyethylene (LDPE), LLDPE and organosilicon of 50:50:0.5～50:50:10 as internal layer, mixed through the quantitative ingredient device respectively; The adding extruder plastifies to be extruded; Through triple extrusion die head extruded film pipe, rolling behind inflation obtains high smooth polyethylene film.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104015448A (en) * | 2014-06-11 | 2014-09-03 | 永新股份（黄山）包装有限公司 | Casting polypropylene film with controllable friction coefficient and preparation method thereof |
| CN106147634A (en) * | 2015-03-30 | 2016-11-23 | 常熟市新明宇塑胶有限公司 | A kind of three-layer co-extruded blown film glued membrane and preparation technology thereof |
| CN109094160A (en) * | 2018-10-29 | 2018-12-28 | 昆山金盟塑料薄膜有限公司 | A kind of FFS packaging film and preparation method thereof |
| CN110370764A (en) * | 2019-04-15 | 2019-10-25 | 北京市永生运佳包装材料有限公司 | A kind of PE base material film and preparation method thereof |
| CN111093989A (en) * | 2017-09-13 | 2020-05-01 | 利奎-保克斯公司 | Method for preventing sensory deterioration of sensitive food in flexible packages and packaged products thereof |
| CN111117508A (en) * | 2019-12-27 | 2020-05-08 | 无锡达美新材料有限公司 | Polyethylene protective film with ultralow surface energy and preparation method thereof |
| CN113580705A (en) * | 2021-07-29 | 2021-11-02 | 海南赛诺实业有限公司 | Ultralow-temperature heat-sealing wear-resistant BOPP film and preparation method thereof |
| CN114619733A (en) * | 2022-03-17 | 2022-06-14 | 金华市联宾塑料制品有限公司 | High-smoothness PE composite film for ultrahigh-speed packaging |
| CN114889274A (en) * | 2022-04-06 | 2022-08-12 | 珠海市德燊环保包装有限公司 | Powder-free PE film for food packaging and preparation method thereof |
| KR102568905B1 (en) * | 2022-07-13 | 2023-08-21 | 이주라 | A tube-type multi-layer polyethylene film and manufacturing method thereof |
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| JPH11507605A (en) * | 1995-06-13 | 1999-07-06 | モービル・オイル・コーポレーション | Stretched polypropylene film with high moisture barrier |
| US6387529B1 (en) * | 1997-12-24 | 2002-05-14 | Exxon Mobil Oil Corporation | Biaxially oriented HDPE multilayer film |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104015448A (en) * | 2014-06-11 | 2014-09-03 | 永新股份（黄山）包装有限公司 | Casting polypropylene film with controllable friction coefficient and preparation method thereof |
| CN106147634A (en) * | 2015-03-30 | 2016-11-23 | 常熟市新明宇塑胶有限公司 | A kind of three-layer co-extruded blown film glued membrane and preparation technology thereof |
| CN111093989A (en) * | 2017-09-13 | 2020-05-01 | 利奎-保克斯公司 | Method for preventing sensory deterioration of sensitive food in flexible packages and packaged products thereof |
| CN109094160A (en) * | 2018-10-29 | 2018-12-28 | 昆山金盟塑料薄膜有限公司 | A kind of FFS packaging film and preparation method thereof |
| CN110370764A (en) * | 2019-04-15 | 2019-10-25 | 北京市永生运佳包装材料有限公司 | A kind of PE base material film and preparation method thereof |
| CN110370764B (en) * | 2019-04-15 | 2022-06-28 | 永生运佳(宣城)薄膜科技有限公司 | PE (polyethylene) base material film and preparation method thereof |
| CN111117508A (en) * | 2019-12-27 | 2020-05-08 | 无锡达美新材料有限公司 | Polyethylene protective film with ultralow surface energy and preparation method thereof |
| CN113580705A (en) * | 2021-07-29 | 2021-11-02 | 海南赛诺实业有限公司 | Ultralow-temperature heat-sealing wear-resistant BOPP film and preparation method thereof |
| CN113580705B (en) * | 2021-07-29 | 2023-03-17 | 海南赛诺实业有限公司 | Ultralow-temperature heat-sealing wear-resistant BOPP film and preparation method thereof |
| CN114619733A (en) * | 2022-03-17 | 2022-06-14 | 金华市联宾塑料制品有限公司 | High-smoothness PE composite film for ultrahigh-speed packaging |
| CN114889274A (en) * | 2022-04-06 | 2022-08-12 | 珠海市德燊环保包装有限公司 | Powder-free PE film for food packaging and preparation method thereof |
| KR102568905B1 (en) * | 2022-07-13 | 2023-08-21 | 이주라 | A tube-type multi-layer polyethylene film and manufacturing method thereof |
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Application publication date: 20120919 |