CN103818083B - Pure PE three-layer plastic film, corner angle packing bag prepared therefrom and production method thereof - Google Patents
Pure PE three-layer plastic film, corner angle packing bag prepared therefrom and production method thereof Download PDFInfo
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- CN103818083B CN103818083B CN201410053594.2A CN201410053594A CN103818083B CN 103818083 B CN103818083 B CN 103818083B CN 201410053594 A CN201410053594 A CN 201410053594A CN 103818083 B CN103818083 B CN 103818083B
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Abstract
The present invention relates to plastics film manufacturing technology field, specifically a kind of pure PE three-layer plastic film, described film comprises skin, middle layer and internal layer, described skin comprises the raw material of following weight percents: metallocene 78-90%, Low Density Polyethylene 6-15%, high density polyethylene(HDPE) 3-5.5%, slipping agent 0.8-3.2%, described middle layer comprises the raw material of following weight percents: metallocene 70-85%, Low Density Polyethylene 12-25%, high density polyethylene(HDPE) 2-5%, slipping agent 0.8-2.5%, described internal layer comprises the raw material of following weight percents: metallocene 70-85%, Low Density Polyethylene 12-25%, slipping agent 1-5%, the present invention is compared with the existing technology, under the prerequisite ensureing plastics film firmness, intensity, the corner heat-sealing distance controlling of packing bag four banding edges and corners can be made to reach only to be had within 5 millimeters, and breach the drawback of conventional P E industry, four banding bags do not touch PE industry so far, and major part applies to composite membrane, thus simplifies production technique, while ensureing that outer packaging bag is attractive in appearance, it is possible to greatly reduce the packing cost using composite membrane producer.
Description
[technical field]
The present invention relates to plastics film manufacturing technology field, specifically a kind of pure PE three-layer plastic film, corner angle packing bag prepared therefrom and production method thereof.
[background technology]
The technological process of production of plastics film is: after the resin raw material supplied in cylinder from hopper is melted by heater heats, PE resin is extruded, by continuous print, the shape that blowing up becomes film to pinblock, mould head by screw rod. At present, it may also be useful to pure PE plastic pellet, is blow molded into plastics film, when making product external packaging bag, film is all very soft, and, not having corner angle when this packing bag is folding, outward appearance is unsightly. The product plastic packaging bag having corner angle attractive in appearance now seen on the market, all for composite plastic film (such as: CPP and PE compound etc.) is made, from machining angle, composite prod uses glue paste, cost height, more not environmentally, it may also be useful to adhesion phenomenon when there is outside heat-sealing during pure PE plastic packaging bag when sealing, affects attractive in appearance.
[summary of the invention]
The object of the present invention is exactly to be solved above-mentioned deficiency, and a kind of pure PE three-layer plastic film, corner angle packing bag prepared therefrom and production method thereof are provided, utilize the outer packaging sack that this pure PE single layer plastics films is made, produce simple and easy, corner angle are had time folding, erection station can put, directly increase stereoscopic sensation and the aesthetic feeling of packing bag.
Design a kind of pure PE three-layer plastic film for achieving the above object, described film comprises skin, middle layer and internal layer, described skin is made up of the raw material of following weight percents, each raw materials quality per-cent sum is 100%: metallocene 78-90%, Low Density Polyethylene 6-15%, high density polyethylene(HDPE) 3-5.5%, slipping agent 0.8-3.2%, described middle layer is made up of the raw material of following weight percents, each raw materials quality per-cent sum is 100%: metallocene 70-85%, Low Density Polyethylene 12-25%, high density polyethylene(HDPE) 2-5%, slipping agent 0.8-2.5%, described internal layer is made up of the raw material of following weight percents, each raw materials quality per-cent sum is 100%: metallocene 70-85%, Low Density Polyethylene 12-25%, slipping agent 1-5%.
Described skin comprises the raw material of following weight percents: metallocene 84%, Low Density Polyethylene 9.5%, high density polyethylene(HDPE) 4.5%, slipping agent 2%, described middle layer comprises the raw material of following weight percents: metallocene 78%, Low Density Polyethylene 17%, high density polyethylene(HDPE) 3.5%, slipping agent 1.5%, and described internal layer comprises the raw material of following weight percents: metallocene 79%, Low Density Polyethylene 19%, slipping agent 2%.
A kind of pure PE three-layer plastic film corner angle packing bag, described packing bag uses pure PE three-layer plastic film to make, corner angle are produced after described packing bag is folding, described pure PE three-layer plastic film comprises skin, middle layer and internal layer, described skin is made up of the raw material of following weight percents, each raw materials quality per-cent sum is 100%: metallocene 78-90%, Low Density Polyethylene 6-15%, high density polyethylene(HDPE) 3-5.5%, slipping agent 0.8-3.2%, described middle layer is made up of the raw material of following weight percents, each raw materials quality per-cent sum is 100%: metallocene 70-85%, Low Density Polyethylene 12-25%, high density polyethylene(HDPE) 2-5%, slipping agent 0.8-2.5%, described internal layer is made up of the raw material of following weight percents, each raw materials quality per-cent sum is 100%: metallocene 70-85%, Low Density Polyethylene 12-25%, slipping agent 1-5%.
Described skin comprises the raw material of following weight percents: metallocene 84%, Low Density Polyethylene 9.5%, high density polyethylene(HDPE) 4.5%, slipping agent 2%, described middle layer comprises the raw material of following weight percents: metallocene 78%, Low Density Polyethylene 17%, high density polyethylene(HDPE) 3.5%, slipping agent 1.5%, and described internal layer comprises the raw material of following weight percents: metallocene 79%, Low Density Polyethylene 19%, slipping agent 2%.
The corner heat-sealing distance of described packing bag four banding edges and corners is within 5mm, and described packing bag four banding edges and corners are point-like or netted.
The production method of a kind of pure PE three-layer plastic film corner angle packing bag, comprise the following steps: by above-mentioned skin, middle layer, the PE raw material of internal layer mixes in proportion on mixing machine, heated by three forcing machines and jointly extrude, it is pulled into tubular film by suitable air quantity blowing up when extruding, it is cut into sheet film and rolling film forming volume again through limit cutting knife, it is converted into the tetragon cylinder film with knuckle by knuckle mould according to size, then through heat-sealing bag machine, its four limit is sealed, heat-sealing distance is within 5mm, bottom eventually sever, heat-sealing forms pocket.
The present invention is compared with the existing technology, there is following useful effect: this pure PE three-layer plastic film uses the three layers of blowing of pure PE plastic pellet and becomes, utilize the outer packaging sack that this pure PE three-layer plastic film is made, corner angle are had time folding, outward appearance is more attractive in appearance, can erection station put, directly increase stereoscopic sensation and the aesthetic feeling of packing bag, breach the drawback of conventional P E industry, four banding bags do not touch PE industry so far, major part applies to composite membrane, thus simplify production technique, while ensureing that outer packaging bag is attractive in appearance, can greatly reduce the packing cost using composite membrane producer, in addition, this pure PE three-layer plastic film is under the prerequisite ensureing plastics film firmness, intensity, the corner heat-sealing distance controlling of packing bag four banding edges and corners can be made to reach only to be had within 5 millimeters, and now the corner of the outer packaging four banding edges and corners of composite plastic film on the market seals all more than 5 millimeters, and any shape such as four banding edges and corners can be made point-like, net is strengthened.
[embodiment]
Below in conjunction with embodiment, the invention will be further described:
Pure PE three-layer plastic film of the present invention, this film comprises skin, middle layer and internal layer, outer field raw materials for production are metallocene, Low Density Polyethylene, high density polyethylene(HDPE) and slipping agent, the raw materials for production in middle layer are metallocene, Low Density Polyethylene, high density polyethylene(HDPE), slipping agent, and the raw materials for production of internal layer are metallocene, Low Density Polyethylene and slipping agent, using this pure PE three-layer plastic film to make pure PE three-layer plastic film corner angle packing bag, produce corner angle after this packing bag is folding, the corner heat-sealing distance of these packing bag four banding edges and corners is within 5mm, and packing bag four banding edges and corners are point-like or netted, the production method of this packing bag is the skin of the colorful film (pure PE three-layer plastic film described above) by printing, middle layer, the PE raw material of internal layer mixes in proportion on mixing machine, heated by three forcing machines and jointly extrude, it is pulled into tubular film by suitable air quantity blowing up when extruding, it is cut into sheet film and rolling film forming volume again through limit cutting knife, it is converted into the tetragon cylinder film with knuckle by knuckle mould according to size, then through heat-sealing bag machine, its four limit is sealed, heat-sealing distance is within 5mm, bottom eventually sever, heat-sealing forms pocket.
The present invention is in order to solve existing problem, by improving composition of raw materials design, use pure PE plastic pellet blowing, recycling this pure PE three-layer plastic film and make outer packaging sack, its technical process is: raw material mediation, film production, coating are processed, cut processing, precision work bag, precision work flanging and precision work bag. While not only ensure that the film firmness after pure PE plastic blow molding, intensity, the corner heat-sealing distance controlling of four banding edges and corners of plastic film packaging thing reaches only to be had within 5 millimeters (corner of the outer packaging four banding edges and corners of composite plastic film on the market seals all more than 5 millimeters now), and four banding edges and corners can be made point-like, any shape such as netted.
In the present invention, its formulation principle designs according to the transfer mode of heat-sealing principle and temperature, three-layer thin-film altogether, divide skin, middle layer, internal layer, heat-sealable way is that outer heating and pressurizing makes internal layer heat-sealing reach intensity and outer non-fusible, during design film, the outer internal layer density that arrives is by high to Low, accepting heat-sealing temperature is also by high to Low, more than formula is exactly use this principle of design, also ensure while ensureing internal layer membrane heat seal strength (non-fusible) attractive in appearance of outer membrane, thus arrive the object of design. Its objective is to break through the drawback of PE industry, four banding bags do not touch PE industry so far, and major part applies to composite membrane, thus simplifies production technique, while ensureing that outer packaging bag is attractive in appearance, it is possible to greatly reduce the packing cost using composite membrane producer.
Embodiment 1
Pure PE three-layer plastic film of the present invention, its skin comprises the raw material of following weight percents: metallocene 84%, Low Density Polyethylene 9.5%, high density polyethylene(HDPE) 4.5%, slipping agent 2%, middle layer comprises the raw material of following weight percents: metallocene 78%, Low Density Polyethylene 17%, high density polyethylene(HDPE) 3.5%, slipping agent 1.5%, and internal layer comprises the raw material of following weight percents: metallocene 79%, Low Density Polyethylene 19%, slipping agent 2%.
Embodiment 2
Pure PE three-layer plastic film of the present invention, its skin comprises the raw material of following weight percents: metallocene 78%, Low Density Polyethylene 15%, high density polyethylene(HDPE) 5.5%, slipping agent 1.5%, middle layer comprises the raw material of following weight percents: metallocene 70%, Low Density Polyethylene 25%, high density polyethylene(HDPE) 4.2%, slipping agent 0.8%, and internal layer comprises the raw material of following weight percents: metallocene 70%, Low Density Polyethylene 25%, slipping agent 5%.
Embodiment 3
Pure PE three-layer plastic film of the present invention, its skin comprises the raw material of following weight percents: metallocene 90%, Low Density Polyethylene 6%, high density polyethylene(HDPE) 3%, slipping agent 1%, middle layer comprises the raw material of following weight percents: metallocene 85%, Low Density Polyethylene 12%, high density polyethylene(HDPE) 2%, slipping agent 1%, and internal layer comprises the raw material of following weight percents: metallocene 85%, Low Density Polyethylene 12%, slipping agent 3%.
Embodiment 4
Pure PE three-layer plastic film of the present invention, its skin comprises the raw material of following weight percents: metallocene 90%, Low Density Polyethylene 6%, high density polyethylene(HDPE) 3.2%, slipping agent 0.8%, middle layer comprises the raw material of following weight percents: metallocene 80%, Low Density Polyethylene 12.5%, high density polyethylene(HDPE) 5%, slipping agent 2.5%, and internal layer comprises the raw material of following weight percents: metallocene 85%, Low Density Polyethylene 14%, slipping agent 1%.
The present invention, not by the change done under the restriction of above-mentioned enforcement mode, the spirit of other any the present invention of not deviating from and principle, modification, replacement, combination, simplification, all should be the substitute mode of equivalence, is included within protection scope of the present invention.
Claims (6)
1. a pure PE three-layer plastic film, it is characterized in that, described film comprises skin, middle layer and internal layer, described skin is made up of the raw material of following weight percents, each raw materials quality per-cent sum is 100%: metallocene 78-90%, Low Density Polyethylene 6-15%, high density polyethylene(HDPE) 3-5.5%, slipping agent 0.8-3.2%, described middle layer is made up of the raw material of following weight percents, each raw materials quality per-cent sum is 100%: metallocene 70-85%, Low Density Polyethylene 12-25%, high density polyethylene(HDPE) 2-5%, slipping agent 0.8-2.5%, described internal layer is made up of the raw material of following weight percents, each raw materials quality per-cent sum is 100%: metallocene 70-85%, Low Density Polyethylene 12-25%, slipping agent 1-5%.
2. pure PE three-layer plastic film as claimed in claim 1, it is characterized in that, described skin comprises the raw material of following weight percents: metallocene 84%, Low Density Polyethylene 9.5%, high density polyethylene(HDPE) 4.5%, slipping agent 2%, described middle layer comprises the raw material of following weight percents: metallocene 78%, Low Density Polyethylene 17%, high density polyethylene(HDPE) 3.5%, slipping agent 1.5%, and described internal layer comprises the raw material of following weight percents: metallocene 79%, Low Density Polyethylene 19%, slipping agent 2%.
3. a pure PE three-layer plastic film corner angle packing bag, it is characterized in that, described packing bag uses pure PE three-layer plastic film to make, corner angle are produced after described packing bag is folding, described pure PE three-layer plastic film comprises skin, middle layer and internal layer, described skin is made up of the raw material of following weight percents, each raw materials quality per-cent sum is 100%: metallocene 78-90%, Low Density Polyethylene 6-15%, high density polyethylene(HDPE) 3-5.5%, slipping agent 0.8-3.2%, described middle layer is made up of the raw material of following weight percents, each raw materials quality per-cent sum is 100%: metallocene 70-85%, Low Density Polyethylene 12-25%, high density polyethylene(HDPE) 2-5%, slipping agent 0.8-2.5%, described internal layer is made up of the raw material of following weight percents, each raw materials quality per-cent sum is 100%: metallocene 70-85%, Low Density Polyethylene 12-25%, slipping agent 1-5%.
4. pure PE three-layer plastic film corner angle packing bag as claimed in claim 3, it is characterized in that, described skin comprises the raw material of following weight percents: metallocene 84%, Low Density Polyethylene 9.5%, high density polyethylene(HDPE) 4.5%, slipping agent 2%, described middle layer comprises the raw material of following weight percents: metallocene 78%, Low Density Polyethylene 17%, high density polyethylene(HDPE) 3.5%, slipping agent 1.5%, and described internal layer comprises the raw material of following weight percents: metallocene 79%, Low Density Polyethylene 19%, slipping agent 2%.
5. pure PE three-layer plastic film corner angle packing bag as claimed in claim 3, it is characterised in that: the corner heat-sealing distance of described packing bag four banding edges and corners is within 5mm, and described packing bag four banding edges and corners are point-like or netted.
6. the production method of a pure PE three-layer plastic film corner angle packing bag, it is characterized in that, comprise the following steps: by the skin according to any one of claim 3-5, middle layer, the PE raw material of internal layer mixes in proportion on mixing machine, heated by three forcing machines and jointly extrude, it is pulled into tubular film by suitable air quantity blowing up when extruding, it is cut into sheet film and rolling film forming volume again through limit cutting knife, it is converted into the tetragon cylinder film with knuckle by knuckle mould according to size, then through heat-sealing bag machine, its four limit is sealed, heat-sealing distance is within 5mm, bottom eventually sever, heat-sealing forms pocket.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410053594.2A CN103818083B (en) | 2014-02-17 | 2014-02-17 | Pure PE three-layer plastic film, corner angle packing bag prepared therefrom and production method thereof |
| PCT/JP2015/052138 WO2015122269A1 (en) | 2014-02-17 | 2015-01-27 | Sharp-cornered packaging bag and manufacturing method therefor |
| JP2015562773A JP6306066B2 (en) | 2014-02-17 | 2015-01-27 | Square standing packaging bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410053594.2A CN103818083B (en) | 2014-02-17 | 2014-02-17 | Pure PE three-layer plastic film, corner angle packing bag prepared therefrom and production method thereof |
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| CN103818083A CN103818083A (en) | 2014-05-28 |
| CN103818083B true CN103818083B (en) | 2016-06-01 |
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| CN201410053594.2A Active CN103818083B (en) | 2014-02-17 | 2014-02-17 | Pure PE three-layer plastic film, corner angle packing bag prepared therefrom and production method thereof |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105713241A (en) * | 2016-04-15 | 2016-06-29 | 上海福助工业有限公司 | Biodegradable thermoplastic starch resin film and preparation method thereof |
| CN106626636A (en) * | 2016-12-01 | 2017-05-10 | 成泰昌包装制品(深圳)有限公司 | High-strength packaging film |
| CN109335261B (en) * | 2017-02-10 | 2020-02-21 | 嘉兴乾昆工业设计有限公司 | Bag body production process of moisture-proof rice packaging bag |
| CN109305462B (en) * | 2017-02-10 | 2020-02-21 | 嘉兴乾昆工业设计有限公司 | Method for preparing separated son-mother conjoined mask bag body |
| CN109435403A (en) * | 2018-12-28 | 2019-03-08 | 大连大富塑料彩印有限公司 | A kind of puncture resistance composite membrane |
| WO2021084464A1 (en) * | 2019-10-30 | 2021-05-06 | DIEDLOFF, Manley | Recyclable polyethylene-based packaging material for use on horizontal form-fill-seal machines and a method of its manufacture |
| CN110979956B (en) * | 2019-12-11 | 2022-02-11 | 黄山永新股份有限公司 | Aseptic packaging bag for milk machine and production process thereof |
| CN114573893A (en) * | 2020-12-01 | 2022-06-03 | 中国石油天然气股份有限公司 | Middle layer composite material of heavy packaging film and preparation method thereof |
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| CN102240299A (en) * | 2010-05-14 | 2011-11-16 | 北京润德康医药技术有限公司 | Improved intravenously dripped multi-vitamin injection |
| CN102350843A (en) * | 2011-09-13 | 2012-02-15 | 佛山新长盛塑料薄膜有限公司 | Formula of standing bag laminated film with high impact resistance and high stiffness |
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Patent Citations (3)
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| CN102240299A (en) * | 2010-05-14 | 2011-11-16 | 北京润德康医药技术有限公司 | Improved intravenously dripped multi-vitamin injection |
| CN102173160A (en) * | 2010-12-29 | 2011-09-07 | 东莞市正新包装制品有限公司 | Heavy-duty thermal shrinkage polyethylene film and preparation method thereof |
| CN102350843A (en) * | 2011-09-13 | 2012-02-15 | 佛山新长盛塑料薄膜有限公司 | Formula of standing bag laminated film with high impact resistance and high stiffness |
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