CN102416748A - Plastic base material film for food packaging and processing technology thereof - Google Patents
Plastic base material film for food packaging and processing technology thereof Download PDFInfo
- Publication number
- 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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- material film
- packaging
- plastic basis
- basis material
- lldpe
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- 239000000463 material Substances 0.000 title claims abstract description 24
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 23
- 229920003023 plastic Polymers 0.000 title claims abstract description 23
- 239000004033 plastic Substances 0.000 title claims abstract description 23
- 238000005516 engineering process Methods 0.000 title claims description 12
- 238000012545 processing Methods 0.000 title claims description 9
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 16
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 16
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 14
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 14
- 239000004698 Polyethylene Substances 0.000 claims abstract description 12
- -1 polyethylene Polymers 0.000 claims abstract description 12
- 229920000573 polyethylene Polymers 0.000 claims abstract description 12
- 229920001526 metallocene linear low density polyethylene Polymers 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 7
- 239000000155 melt Substances 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 5
- 230000000996 additive effect Effects 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 abstract description 6
- 230000004888 barrier function Effects 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract 2
- 239000010408 film Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Wrappers (AREA)
Abstract
The invention discloses a plastic base material film for food packaging, which comprises the following raw materials: LDPE low-density polyethylene, LLDPE linear low-density polyethylene and mLLDPE metallocene linear polyethylene, wherein the mass ratio of the LDPE: LLDPE: mLLDPE =15-25:40-45: 34-40. The food packaging plastic base material film disclosed by the invention is good in barrier property and air tightness, has good pollution resistance, pressure resistance and impact resistance, has the characteristics of high heat sealing strength and good heat sealing performance, and accords with national food safety certification. Moreover, the production process of the food packaging plastic base material film has the advantages of reasonable design, simple flow and easy realization.
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 base material 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 base material film for food packaging and processing technology thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102416748A true CN102416748A (en) | 2012-04-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102229420A Pending CN102416748A (en) | 2011-08-05 | 2011-08-05 | Plastic base material film for food packaging and processing technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102416748A (en) |
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)
| 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 |
| 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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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: DALIAN RUIXIANDA PLASTIC CO., LTD. Free format text: FORMER OWNER: DALIAN FANGSHENG PLASTIC CO., LTD. Effective date: 20130603 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
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. |
|
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120418 |