CN102416748A - Plastic substrate film for food packaging and processing technology thereof - Google Patents
Plastic substrate film for food packaging and processing technology thereof Download PDFInfo
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- CN102416748A CN102416748A CN2011102229420A CN201110222942A CN102416748A CN 102416748 A CN102416748 A CN 102416748A CN 2011102229420 A CN2011102229420 A CN 2011102229420A CN 201110222942 A CN201110222942 A CN 201110222942A CN 102416748 A CN102416748 A CN 102416748A
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Abstract
The invention discloses a plastic substrate film for food packaging. The plastic substrate film comprises the following raw materials: low density polyethylene (LDPE), linear low density polyethylene (LLDPE) and metallocene linear low density polyethylene (mLLDPE) in a mass ratio of (15-25):(40-45):(34-40). The plastic substrate film has the following beneficial effects: the plastic substrate film has good barrier property, air tightness, pollution resistance, pressure resistance and impact resistance, simultaneously has the characteristics of high heat sealing strength and good heat sealing property and conforms to national food safety certification; and a production technology of the plastic substrate film is reasonable in design, simple in flow and easy to implement.
Description
Technical field
The present invention relates to the packaging material of food, specifically is a kind of plastic basis material film and processing technology thereof of packaging for foodstuff.
Background technology
Present packaging for foodstuff industry says that the packing base material film quantity that needs is big, kind is many, adopts the very difficult packing instructions that adapt to Special food of film of single raw material production.Trace it to its cause, though mainly be that respectively to produce producer's production technology of plastic raw materials each has something to recommend him, every kind of raw material all has its weak point, so the film of producing is difficult to satisfy the demand of various situation.Adopt different material to mix the way of using though some companies also have, owing to lack the necessary testing equipment and the testing program of checkout equipment and system, its effect is unsatisfactory.
Packaging for foodstuff plastic basis material film is produced with blow moiding method with the polyethylene raw material usually.But it is competent to want to reach above-mentioned these performance requirements and be not single polyethylene blown film technology institute, has therefore developed the polyethylene raw material of multiple performance.Yet; The polyethylene film of individual layer is poor to the barrier of gases such as oxygen; Pack fried time-like, be prone to cause sealing part to pollute, general flexible package punch polyethylene film is poor to the sealing property (claiming the field trash sealing property again) of this type of packing; Can not satisfy the requirement of its technology of the package and connection with wrapping of piece storage period, therefore must adopt barrier property and be mingled with sealing property all good multilaminar polyethylene modified film or laminated film.
Summary of the invention
In order to overcome above-mentioned defective, the invention provides and a kind ofly possess that high barrier, high-air-tightness, resistance tocrocking, heat seal strength are high, heat sealability is good, the plastic basis material film and the processing technology thereof of the packaging for foodstuff of certain resistance to pressure and resistance to impact arranged.
Technical scheme of the present invention is achieved in that a kind of plastic basis material film of packaging for foodstuff; Comprise following raw material: the LDPE low density polyethylene (LDPE); LLDPE LLDPE and mLLDPE metallocene linear polyethylene, its mass ratio is LDPE:LLDPE:mLLDPE=15-25:40-45:34-40.
The melt index of said LDPE is 1.8-2.0g/10min, and density is 0.924-0.927g/cm
2
The melt index of said LLDPE is 0.9-1.2g/10min, and density is 0.918-0.921 g/cm
2
The melt index of said mLLDPE is 0.9-1.1g/10min, and density is 0.915-0.917g/cm
2
Also contain additive in the said raw material, its content accounts for the 0.4-0.6% of raw material gross weight.
The processing technology of the plastic basis material film of above-mentioned packaging for foodstuff is: said raw material is mixed in proportion, stir; Send into extrusion machine fused mass and extrude, melt temperature is 175-195 ℃; Carry out the typing of die head blown film, die head temperature is to raise gradually from bottom to top, and its scope is controlled at 165-205 ℃; Traction cutting then; Last rolling.
The time of said stirring is 15-20min.
The rotating speed of said extruder is controlled at 80-120r/min.
The invention has the beneficial effects as follows: (1) packaging for foodstuff plastic basis material of the present invention thin-film barrier property and air-tightness are good; Have good resistance tocrocking, resistance to pressure and resistance to impact; Have heat seal strength height, characteristics that heat sealability is good simultaneously, meet the state food safety certification.(2) packaging for foodstuff plastic basis material film production process of the present invention, reasonable in design, flow process is simple, is easy to realize.(3) packaging for foodstuff plastic basis material film production process of the present invention has improved the inherent quality of product, has improved appearance, has reduced labour intensity simultaneously, has improved production efficiency.
The specific embodiment
Below in conjunction with specific embodiment the present invention is further explained.The manufacturing equipment of packaging for foodstuff plastic basis material film all adopts in following examples: three-layer co-extruded traction rotation blown film unit, drawn subsidiary engine, winder etc. and formed by three extruders, a die head, typing cage, a cover; Checkout equipment all adopts: GBL-L electronic tension tester and MXD-01 friction coefficient instrument.
Embodiment 1
With the ratio preparation raw materials for production of raw material in low density polyethylene 25%, LLDPE LLDPE40%, metallocene linear polyethylene mLLDPE34.5% and additive (opening is used) 0.5%; Stir 15-20min; Sending into extrusion machine fused mass extrudes; Melt temperature is 175-185 ℃, and the rotating speed of extruder is controlled at 80r/min; Carry out the typing of die head blown film, die head temperature is to raise gradually from bottom to top, and its scope is controlled at 165-195 ℃; Traction cutting then; Last rolling.The performance of products parameter of producing is: hot strength: 35Mpa; Elongation at break: 950%; Heat seal strength: 9.6; Coefficient of friction: 0.187.
Embodiment 2
With the ratio preparation raw materials for production of raw material in low density polyethylene 20%, LLDPE LLDPE40%, metallocene linear polyethylene mLLDPE39.6% and additive (opening is used) 0.4%; Stir 15-20min; Sending into extrusion machine fused mass extrudes; Melt temperature is 175-195 ℃, and the rotating speed of extruder is controlled at 120r/min; Carry out the typing of die head blown film, die head temperature is to raise gradually from bottom to top, and its scope is controlled at 165-185 ℃; Traction cutting then; Last rolling.The performance of products parameter of producing is: hot strength: 40Mpa; Elongation at break: 1018%; Heat seal strength: 10.2; Coefficient of friction: 0.198.
Embodiment 3
With the ratio preparation raw materials for production of raw material in low density polyethylene 15%, LLDPE LLDPE45%, metallocene linear polyethylene mLLDPE39.4% and additive (opening is used) 0.6%; Stir 15-20min; Sending into extrusion machine fused mass extrudes; Melt temperature is 185-195 ℃, and the rotating speed of extruder is controlled at 100r/min; Carry out the typing of die head blown film, die head temperature is to raise gradually from bottom to top, and its scope is controlled at 175-205 ℃; Traction cutting then; Last rolling.The performance of products parameter of producing is: hot strength: 42Mpa; Elongation at break: 1021%; Heat seal strength: 10; Coefficient of friction: 0.195.
The above; Be merely the preferable specific embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technical staff who is familiar with the present technique field is equal to replacement or change according to technical scheme of the present invention and inventive concept thereof in the technical scope that the present invention discloses, all should be encompassed within protection scope of the present invention.
Claims (8)
1. the plastic basis material film of a packaging for foodstuff; It is characterized in that; Comprise following raw material: the LDPE low density polyethylene (LDPE), LLDPE LLDPE and mLLDPE metallocene linear polyethylene, its mass ratio is LDPE:LLDPE:mLLDPE=15-25:40-45:34-40.
2. the plastic basis material film of packaging for foodstuff according to claim 1 is characterized in that, the melt index of said LDPE is 1.8-2.0g/10min, and density is 0.924-0.927g/cm
2
3. the plastic basis material film of packaging for foodstuff according to claim 1 is characterized in that, the melt index of said LLDPE is 0.9-1.2g/10min, and density is 0.918-0.921 g/cm
2
4. the plastic basis material film of packaging for foodstuff according to claim 1 is characterized in that, the melt index of said mLLDPE is 0.9-1.1g/10min, and density is 0.915-0.917g/cm
2
5. the plastic basis material film of packaging for foodstuff according to claim 1 is characterized in that, also contains additive in the said raw material, and its content accounts for the 0.4-0.6% of raw material gross weight.
6. like the processing technology of the plastic basis material film of each described packaging for foodstuff of claim 1-5, it is characterized in that processing step is: said raw material is mixed in proportion, stir; Send into extrusion machine fused mass and extrude, melt temperature is 175-195 ℃; Carry out the typing of die head blown film, die head temperature is to raise gradually from bottom to top, and its scope is controlled at 165-205 ℃; Traction cutting then; Last rolling.
7. the processing technology of the plastic basis material film of packaging for foodstuff according to claim 6 is characterized in that, the time of said stirring is 15-20min.
8. the processing technology of the plastic basis material film of packaging for foodstuff according to claim 6 is characterized in that, the rotating speed of said extruder is controlled at 80-120r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102229420A CN102416748A (en) | 2011-08-05 | 2011-08-05 | Plastic substrate film for food packaging and processing technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102229420A CN102416748A (en) | 2011-08-05 | 2011-08-05 | Plastic substrate film for food packaging and processing technology thereof |
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| CN102416748A true CN102416748A (en) | 2012-04-18 |
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| CN2011102229420A Pending CN102416748A (en) | 2011-08-05 | 2011-08-05 | Plastic substrate film for food packaging and processing technology thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103540006A (en) * | 2012-07-13 | 2014-01-29 | 广东天元印刷有限公司 | Special film resin composition for express delivery packaging bags and preparation method thereof |
| CN104356977A (en) * | 2014-11-27 | 2015-02-18 | 河源市普立隆新材料科技有限公司 | Preparation method of adhesive resin for multilayer coextruded plastic composite hose |
| CN104385734A (en) * | 2014-12-09 | 2015-03-04 | 黑龙江省润特科技有限公司 | Ultraviolet crosslinked polyethylene heat shrinkage package film and preparation method thereof |
| CN104985785A (en) * | 2015-06-09 | 2015-10-21 | 无锡佳泰科技有限公司 | Blend film processing technology |
| CN112126146A (en) * | 2020-09-21 | 2020-12-25 | 四川维克多工业有限公司 | Food packaging film bag and preparation process thereof |
Citations (3)
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|---|---|---|---|---|
| WO2004000552A1 (en) * | 2002-06-19 | 2003-12-31 | Honeywell International Inc. | High barrier antifog laminate for case ready meat packaging |
| CN101367283A (en) * | 2008-07-22 | 2009-02-18 | 黄山永新股份有限公司 | Antimicrobial polyethylene film and preparing technique thereof |
| CN101417515A (en) * | 2007-10-25 | 2009-04-29 | 上海紫华企业有限公司 | High-intensity low-gramweight embossing casting film and manufacture method thereof |
-
2011
- 2011-08-05 CN CN2011102229420A patent/CN102416748A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004000552A1 (en) * | 2002-06-19 | 2003-12-31 | Honeywell International Inc. | High barrier antifog laminate for case ready meat packaging |
| CN101417515A (en) * | 2007-10-25 | 2009-04-29 | 上海紫华企业有限公司 | High-intensity low-gramweight embossing casting film and manufacture method thereof |
| CN101367283A (en) * | 2008-07-22 | 2009-02-18 | 黄山永新股份有限公司 | Antimicrobial polyethylene film and preparing technique thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103540006A (en) * | 2012-07-13 | 2014-01-29 | 广东天元印刷有限公司 | Special film resin composition for express delivery packaging bags and preparation method thereof |
| CN104356977A (en) * | 2014-11-27 | 2015-02-18 | 河源市普立隆新材料科技有限公司 | Preparation method of adhesive resin for multilayer coextruded plastic composite hose |
| CN104356977B (en) * | 2014-11-27 | 2018-01-09 | 河源市普立隆新材料科技有限公司 | A kind of preparation method of multi-layer co-extruded plastics composite soft tube adhering resin |
| CN104385734A (en) * | 2014-12-09 | 2015-03-04 | 黑龙江省润特科技有限公司 | Ultraviolet crosslinked polyethylene heat shrinkage package film and preparation method thereof |
| CN104985785A (en) * | 2015-06-09 | 2015-10-21 | 无锡佳泰科技有限公司 | Blend film processing technology |
| CN112126146A (en) * | 2020-09-21 | 2020-12-25 | 四川维克多工业有限公司 | Food packaging film bag and preparation process thereof |
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Owner name: DALIAN RUIXIANDA PLASTIC CO., LTD. Free format text: FORMER OWNER: DALIAN FANGSHENG PLASTIC CO., LTD. Effective date: 20130603 |
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Effective date of registration: 20130603 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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Application publication date: 20120418 |