CN102416746B - A kind of plastic substrate film of packaging for foodstuff and processing technology thereof - Google Patents
A kind of plastic substrate film of packaging for foodstuff and processing technology thereof Download PDFInfo
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- CN102416746B CN102416746B CN201110222926.1A CN201110222926A CN102416746B CN 102416746 B CN102416746 B CN 102416746B CN 201110222926 A CN201110222926 A CN 201110222926A CN 102416746 B CN102416746 B CN 102416746B
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Abstract
The invention discloses a kind of plastic substrate film of packaging for foodstuff, formed by the three-layer co-extruded blowing of internal layer, intermediate layer and skin, described internal layer raw material comprises LDPE low density polyethylene (LDPE), HDPE high density polyethylene (HDPE) and mLLDPE metallocene linear-low density polyethylene, and described intermediate layer and outer raw material are LDPE low density polyethylene (LDPE) and HDPE high density polyethylene (HDPE).Food package plastic base material film barrier of the present invention and air-tightness good, the resistance tocrocking had, resistance to pressure and resistance to impact, have the feature that heat seal strength is high, heat sealability is good simultaneously, meet state food safety certification.Food package plastic base material film production technology of the present invention, reasonable in design, flow process is simple, is easy to realize.
Description
Technical field
The present invention relates to the packaging material of food, the plastic substrate film of specifically a kind of packaging for foodstuff and processing technology thereof.
Background technology
Current food packaging industry says that the packaging base material film quantity needed is large, kind is many, and the film adopting single raw material to produce is difficult to the packing instructions adapting to Special food.Trace it to its cause, although producer's production technology of mainly respectively producing plastic raw materials is each has something to recommend him, often kind of raw material has its weak point, so the film produced is difficult to the demand meeting various situation.Although also there are the way adopting different material used in combination in some companies, owing to lacking necessary testing equipment and the testing program of checkout equipment and system, its effect is unsatisfactory.
Food packing plastic substrate film is produced with polyethylene raw material blow moiding method usually.But wanting to reach these performance requirements above-mentioned is not that single polyethylene blown film technique institute is competent, has therefore developed the polyethylene raw material of multiple performance.But, the barrier of polyethylene film to gases such as oxygen of individual layer is poor, when packing fried class, sealing part is easily caused to pollute, the sealing property (also known as field trash sealing property) that general flexible package punch polyethylene film is packed this type of is poor, the requirement of its technology of the package and connection with wrapping of piece storage period can not be met, therefore must adopt barrier property and be mingled with all good multilaminar polyethylene modified film of sealing property or laminated film.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides that one possesses high barrier, high-air-tightness, resistance tocrocking, heat seal strength is high, heat sealability good, having plastic substrate film and the processing technology thereof of the packaging for foodstuff of certain resistance to pressure and resistance to impact.
Technical scheme of the present invention is achieved in that a kind of plastic substrate film of packaging for foodstuff, formed by the three-layer co-extruded blowing of internal layer, intermediate layer and skin, described internal layer raw material comprises LDPE low density polyethylene (LDPE), HDPE high density polyethylene (HDPE) and mLLDPE metallocene linear-low density polyethylene, and described intermediate layer and outer raw material are LDPE low density polyethylene (LDPE) and HDPE high density polyethylene (HDPE).
In described internal layer, the mass ratio of LDPE, LLDPE and mLLDPE is 25-35:35-45:15-35, and wherein the melt index of LDPE is 1.8-2.2g/10min, and density is 0.923-0.926g/cm
2; The melt index of LLDPE is 1.9-2.2g/10min, and density is 0.918-0.922g/cm
2; The melt index of mLLDPE is 1.9-2.4g/10min, and density is 0.910-0.915g/cm
2;
In described intermediate layer, LDPE, LLDPE mass ratio is 35-45:55-65, and wherein the melt index of LDPE is 1.8-2.2g/10min, and density is 0.923-0.926g/cm
2; The melt index of LLDPE is 1.9-2.2g/10min, and density is 0.918-0.922g/cm
2;
In described skin, the mass ratio of LDPE and LLDPE is 30-40:65-75, and wherein the melt index of LDPE is 0.8-2.1g/10min, and density is 0.923-0.926g/cm
2; The melt index of LLDPE is 1.9-2.2g/10min, and density is 0.918-0.922g/cm
2.
Described internal layer, mass ratio between intermediate layer and skin are 1:1:1.
The processing technology of the plastic substrate film of packaging for foodstuff is: mixed in proportion by described raw material, stir; Feeding extrusion machine fused mass is extruded, and melt temperature is 175-195 DEG C; Carry out the sizing of die head blown film, die head temperature raises gradually from bottom to top, and its scope control is at 165-205 DEG C; Then cutting is drawn; Last rolling.
The time of described stirring is 15-20min.
The rotating speed of described extruder controls at 80-120r/min.
The invention has the beneficial effects as follows: (1) food package plastic base material film barrier of the present invention and air-tightness good, the resistance tocrocking had, resistance to pressure and resistance to impact, there is the feature that heat seal strength is high, heat sealability is good simultaneously, meet state food safety certification.(2) food package plastic base material film production technology of the present invention, reasonable in design, and flow process is simple, is easy to realize.(3) food package plastic base material film production technology of the present invention, improves the inherent quality of product, improves appearance, reduce labour intensity simultaneously, improve production efficiency.
Detailed description of the invention
Below in conjunction with specific embodiment, explanation is further explained to the present invention.In following examples, the manufacturing equipment of food package plastic base material film all adopts: three-layer co-extruded traction rotates blown film unit, is made up of three extruders, die head, sizing cage, a set of traction subsidiary engine, a winder etc.; Checkout equipment all adopts: GBL-L electronic tension tester and MXD-01 friction coefficient instrument.
By the ratio of raw material in internal layer low density polyethylene 45%, high density polyethylene 20%, metallocene linear polyethylene mLLDPE 35%; Intermediate layer is in the ratio of low density polyethylene 30%, high density polyethylene 70%; The outer ratio in low density polyethylene 30%, high density polyethylene 70%, internal layer, mass ratio between intermediate layer and skin are that 1:1:1 prepares raw materials for production, stir 15-20min, feeding extrusion machine fused mass is extruded, melt temperature is 175-185 DEG C, and the rotating speed of extruder controls at 120r/min; Carry out the sizing of die head blown film, die head temperature raises gradually from bottom to top, and its scope control is at 165-195 DEG C; Then cutting is drawn; Last rolling.The performance parameter of the product produced is: hot strength: 27.82Mpa; Elongation at break: 638.4%; Heat seal strength: 10.1; Coefficient of friction: 0.287.
The above; be only the present invention's preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (4)
1. the plastic substrate film of a packaging for foodstuff, it is characterized in that, formed by the three-layer co-extruded blowing of internal layer, intermediate layer and skin, described internal layer raw material comprises LDPE low density polyethylene (LDPE), HDPE high density polyethylene (HDPE) and mLLDPE metallocene linear-low density polyethylene, described intermediate layer and outer raw material are LDPE low density polyethylene (LDPE) and HDPE high density polyethylene (HDPE), processing step is: mixed in proportion by described raw material, stir; Feeding extrusion machine fused mass is extruded, and melt temperature is 175-195 DEG C; Carry out the sizing of die head blown film, die head temperature raises gradually from bottom to top, and its scope control is at 165-205 DEG C; Then cutting is drawn; Last rolling;
In described internal layer, the mass ratio of LDPE, HDPE and mLLDPE is 40-50:15-25:50-60, and wherein the melt index of LDPE is 1.8-2.2g/10min, and density is 0.923-0.926g/cm
2; The melt index of HDPE is 0.9-1.2g/10min, and density is 0.958-0.962g/cm
2; The melt index of mLLDPE is 1.9-2.4g/10min, and density is 0.910-0.915g/cm
2;
In described intermediate layer, LDPE, HDPE mass ratio is 25-35:65-75, and wherein the melt index of LDPE is 1.8-2.2g/10min, and density is 0.923-0.926g/cm
2; The melt index of HDPE is 0.9-1.2g/10min, and density is 0.958-0.962g/cm
2;
In described skin, the mass ratio of LDPE and HDPE is 25-35:65-75, and wherein the melt index of LDPE is 1.8-2.2g/10min, and density is 0.923-0.926g/cm
2; The melt index of HDPE is 0.9-1.2g/10min, and density is 0.958-0.962g/cm
2.
2. the plastic substrate film of packaging for foodstuff according to claim 1, is characterized in that, described internal layer, mass ratio between intermediate layer and skin are 1:1:1.
3. the plastic substrate film of packaging for foodstuff according to claim 1, is characterized in that, the time of described stirring is 15-20min.
4. the plastic substrate film of packaging for foodstuff according to claim 3, is characterized in that, the rotating speed of described extruder controls at 80-120r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110222926.1A CN102416746B (en) | 2011-08-05 | 2011-08-05 | A kind of plastic substrate film of packaging for foodstuff and processing technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110222926.1A CN102416746B (en) | 2011-08-05 | 2011-08-05 | A kind of plastic substrate film of packaging for foodstuff and processing technology thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN102416746A CN102416746A (en) | 2012-04-18 |
| CN102416746B true CN102416746B (en) | 2015-10-21 |
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| CN201110222926.1A Expired - Fee Related CN102416746B (en) | 2011-08-05 | 2011-08-05 | A kind of plastic substrate film of packaging for foodstuff and processing technology thereof |
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Families Citing this family (17)
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| CN102632600B (en) * | 2012-04-25 | 2014-11-19 | 昆明东方塑纸包装有限公司 | Method for preparing low-temperature freshness protection package by applying high polymer material |
| CN102924778A (en) * | 2012-10-25 | 2013-02-13 | 无锡市三力胶带厂 | Medical high-polymer material |
| CN104191766A (en) * | 2014-09-03 | 2014-12-10 | 黄山永新股份有限公司 | Polyethylene film, packaging composite film and preparation method thereof |
| CN104494130A (en) * | 2014-11-28 | 2015-04-08 | 桐城市新丰彩印包装有限公司 | Production process of thin film for packaging foods |
| CN104555088A (en) * | 2014-12-31 | 2015-04-29 | 苏州安特实业有限公司 | Container packaging materials |
| CN105015120A (en) * | 2015-08-19 | 2015-11-04 | 浙江金石包装有限公司 | High-transparency polyethylene film and preparation method thereof |
| CN105172291B (en) * | 2015-09-06 | 2017-05-03 | 黄山永新股份有限公司 | Polyethylene film with easy straight-line tearing and preparation method for polyethylene film |
| CN105922699A (en) * | 2016-06-23 | 2016-09-07 | 厦门艾美森新材料科技股份有限公司 | High-strength plastic thin film and preparation method thereof |
| JP7059648B2 (en) * | 2018-01-24 | 2022-04-26 | 住友ベークライト株式会社 | Multi-layer sheets, trays and packaging |
| CN109130416B (en) * | 2018-07-11 | 2020-05-05 | 汪培杰 | Polyethylene cast film and preparation process thereof |
| CN110181911A (en) * | 2019-06-27 | 2019-08-30 | 常州工程职业技术学院 | A kind of multi-layer co-extruded polyethylene torsion film of simple tension |
| CN110328821B (en) * | 2019-07-22 | 2021-10-12 | 广东安德力新材料有限公司 | Extinction label film, preparation method thereof and preparation method of transparent label film |
| CN110370765A (en) * | 2019-08-09 | 2019-10-25 | 黄山永新股份有限公司 | A kind of resistance to boiling freeze-resistant curtain coating polyethylene film and its production method |
| 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 |
| CN110816004A (en) * | 2019-11-19 | 2020-02-21 | 山东亚新塑料包装有限公司 | Ultralow-temperature PE (polyethylene) membrane and raw material process thereof |
| CN114851655B (en) * | 2021-02-04 | 2024-04-09 | 广东福瑞杰新材料有限公司 | Completely recyclable barrier PE film material and preparation method and application thereof |
| CN114851665A (en) * | 2022-05-26 | 2022-08-05 | 绍兴新航塑料制品有限公司 | Anti-tearing blow-moulding film and preparation process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1608841A (en) * | 2003-09-24 | 2005-04-27 | 埃克森美孚化学专利公司 | Collation shrink |
| CN101049749A (en) * | 2007-04-20 | 2007-10-10 | 上海紫泉标签有限公司 | Heat shrinkage film of high transparent multilaminar polyethylene |
| CN201070864Y (en) * | 2007-04-20 | 2008-06-11 | 上海紫泉标签有限公司 | Highly transparent polythene thermal contraction film |
| CN102029755A (en) * | 2010-09-27 | 2011-04-27 | 沈阳防锈包装材料有限责任公司 | Flame-retardant shrinkable anticorrosive packaging film and manufacturing method thereof |
-
2011
- 2011-08-05 CN CN201110222926.1A patent/CN102416746B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1608841A (en) * | 2003-09-24 | 2005-04-27 | 埃克森美孚化学专利公司 | Collation shrink |
| CN101049749A (en) * | 2007-04-20 | 2007-10-10 | 上海紫泉标签有限公司 | Heat shrinkage film of high transparent multilaminar polyethylene |
| CN201070864Y (en) * | 2007-04-20 | 2008-06-11 | 上海紫泉标签有限公司 | Highly transparent polythene thermal contraction film |
| CN102029755A (en) * | 2010-09-27 | 2011-04-27 | 沈阳防锈包装材料有限责任公司 | Flame-retardant shrinkable anticorrosive packaging film and manufacturing method thereof |
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| Publication number | Publication date |
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| CN102416746A (en) | 2012-04-18 |
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Owner name: DALIAN RUIXIANDA PLASTIC CO., LTD. Free format text: FORMER OWNER: DALIAN FANGSHENG PLASTIC CO., LTD. Effective date: 20130606 |
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Effective date of registration: 20130606 Address after: Zhanqian street Jinzhou District of Dalian City, Liaoning province 116100 WUJIATUN Airport Applicant after: Dalian Ruixianda Plastic Co., Ltd. Address before: 116100, Liaoning, Dalian province Jinzhou District Station Street Wu Tun Airport Applicant before: Dalian Fangsheng Plastic Co., Ltd. |
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