CN101758652A - Biaxial stretched polyethylene heat-sealing film - Google Patents
Biaxial stretched polyethylene heat-sealing film Download PDFInfo
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- CN101758652A CN101758652A CN200910272724A CN200910272724A CN101758652A CN 101758652 A CN101758652 A CN 101758652A CN 200910272724 A CN200910272724 A CN 200910272724A CN 200910272724 A CN200910272724 A CN 200910272724A CN 101758652 A CN101758652 A CN 101758652A
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Abstract
The invention belongs to the wrapping material technical field, particularly to a wrapping film. A biaxial stretched polyethylene heat-sealing film is characterized by comprising a functional layer, a core layer and a secondary functional layer, the core layer is located between the functional layer and the secondary functional layer, the functional layer, the core layer and the secondary functional layer are co-extruded and then stretched in two directions to form one; the material for the functional layer is low-density polyethylene; the material for the core layer is composed of (weight percentage) 97.5 percent of metallocene polyethylene, 0.5 percent of erucic amide, 1 percent of smoothness agent, and 1 percent of oxylated amine; and the material for the secondary functional layer is composed of(weight percentage) 70 percent of low-density polyethylene and 30 percent of petroleum resin; the material weight ratio of the functional layer, the core layer and the secondary functional layer is 1:1:1. The invention is characterized by low heat-sealing temperature (55-85 DEG C).
Description
Technical field
The invention belongs to field of packaging material, be specifically related to a kind of film for packaging.
Background technology
Film for packaging { as bidirectional stretching polypropylene film } exists following deficiency: heat-sealing temperature height (100-120 ℃) at present.
Summary of the invention
The object of the present invention is to provide the low biaxial stretched polyethylene heat-sealing film of a kind of heat-sealing temperature.
To achieve these goals, technical scheme of the present invention is: biaxial stretched polyethylene heat-sealing film, it is characterized in that: it is made up of functional layer, sandwich layer and subfunction layer, sandwich layer is between functional layer and subfunction layer, and functional layer, sandwich layer and subfunction layer adopt coextrusion after biaxial tension and being integral;
The material of described functional layer is a low density polyethylene (LDPE);
The material of described sandwich layer is made up of metallocene PE, erucyl amide, slipping agent and ethoxylated amine, and the shared mass percent of each component is: metallocene PE 97.5%, erucyl amide 0.5%, slipping agent 1%, ethoxylated amine 1%;
The material of described subfunction layer is made up of low density polyethylene (LDPE) and Petropols, and the shared mass percent of each component is: low density polyethylene (LDPE) 70%, Petropols 30%;
The material of functional layer: the material of sandwich layer: the mass ratio of the material of subfunction layer is 1: 1: 1.
The invention has the beneficial effects as follows: heat-sealing temperature low (55-85 ℃).
Description of drawings
Fig. 1 is a structural representation of the present invention;
Among the figure: 1-functional layer, 2-sandwich layer, 3-subfunction layer.
The specific embodiment
Embodiment 1:
As shown in Figure 1, biaxial stretched polyethylene heat-sealing film, it is made up of functional layer 1, sandwich layer 2 and subfunction layer 3, sandwich layer 2 is between functional layer 1 and subfunction layer 3, functional layer 1, sandwich layer 2 and subfunction layer 3 adopt coextrusion after biaxial tension and be integral (extrusion temperature is 160-190 ℃, adopts existing co-extrusion, stretch processes);
The material of described functional layer 1 is a low density polyethylene (LDPE);
The material of described sandwich layer 2 is that metallocene PE, erucyl amide, slipping agent and ethoxylated amine (ethoxylated amine) are formed, and the shared mass percent of each component is: metallocene PE 97.5%, erucyl amide 0.5%, slipping agent 1%, ethoxylated amine 1%;
The material of described subfunction layer 3 is that low density polyethylene (LDPE) and Petropols are formed, and the shared mass percent of each component is: low density polyethylene (LDPE) 70%, Petropols 30%;
The material of functional layer 1: the material of sandwich layer 2: the mass ratio of the material of subfunction layer 3 is 1: 1: 1.
The density of described low density polyethylene (LDPE) is 0.925g/cm
3Below.
Described slipping agent is that { (EBS) English name: Ethylenebis-stearamide is commonly called as ethylene bis stearamide: brightener, dispersant, molecular formula: C
38H
76N
2O
2.
Preparation method of the present invention is: the raw material of apolegamy is sent into extruder be processed into melt, melt becomes sheet (extrusion temperature is 160-190 ℃) by curtain coating casting sheet co-extrusion, sheet becomes film through biaxial tension, film becomes female film through sided corona treatment or flame treatment, parent roll cuts into the biaxial stretched polyethylene heat-sealing film finished product at last through Ageing Treatment.
Biaxial stretched polyethylene heat-sealing film of the present invention is carried out the heat-sealing temperature experiment: experiment shows that heat-sealing temperature is 55-85 ℃, and the heat-sealing temperature of existing bidirectional stretching polypropylene film is 100-120 ℃, illustrates that the heat-sealing temperature of biaxial stretched polyethylene heat-sealing film of the present invention is low.
Embodiment 2:
Substantially the same manner as Example 1, difference is: described slipping agent is an oleamide.
Embodiment 3:
Substantially the same manner as Example 1, difference is: described slipping agent is an oleamide.
The present invention cited each raw material (comprising different molecular weight, different manufacturers) can both be realized the present invention, does not enumerate embodiment one by one at this.
Claims (2)
1. biaxial stretched polyethylene heat-sealing film, it is characterized in that: it is made up of functional layer, sandwich layer and subfunction layer, and sandwich layer is between functional layer and subfunction layer, and functional layer, sandwich layer and subfunction layer adopt coextrusion after biaxial tension and being integral;
The material of described functional layer is a low density polyethylene (LDPE);
The material of described sandwich layer is made up of metallocene PE, erucyl amide, slipping agent and ethoxylated amine, and the shared mass percent of each component is: metallocene PE 97.5%, erucyl amide 0.5%, slipping agent 1%, ethoxylated amine 1%;
The material of described subfunction layer is made up of low density polyethylene (LDPE) and Petropols, and the shared mass percent of each component is: low density polyethylene (LDPE) 70%, Petropols 30%;
The material of functional layer: the material of sandwich layer: the mass ratio of the material of subfunction layer is 1: 1: 1.
2. biaxial stretched polyethylene heat-sealing film according to claim 1 is characterized in that: described slipping agent is ethylene bis stearamide, fatty acid ester or grease acid amides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102727240A CN101758652B (en) | 2009-11-10 | 2009-11-10 | Biaxial stretched polyethylene heat-sealing film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102727240A CN101758652B (en) | 2009-11-10 | 2009-11-10 | Biaxial stretched polyethylene heat-sealing film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101758652A true CN101758652A (en) | 2010-06-30 |
| CN101758652B CN101758652B (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102727240A Expired - Fee Related CN101758652B (en) | 2009-11-10 | 2009-11-10 | Biaxial stretched polyethylene heat-sealing film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101758652B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009751A (en) * | 2012-12-25 | 2013-04-03 | 海南赛诺实业有限公司 | Biaxial stretching polypropylene high heat-seal film and manufacturing method thereof |
| CN103538325A (en) * | 2012-07-10 | 2014-01-29 | 湖北富思特材料科技集团有限公司 | B0PP (biaxially-oriented polypropylene) extrusion coating membrane |
-
2009
- 2009-11-10 CN CN2009102727240A patent/CN101758652B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103538325A (en) * | 2012-07-10 | 2014-01-29 | 湖北富思特材料科技集团有限公司 | B0PP (biaxially-oriented polypropylene) extrusion coating membrane |
| CN103538325B (en) * | 2012-07-10 | 2015-06-17 | 湖北富思特材料科技集团有限公司 | B0PP (biaxially-oriented polypropylene) extrusion coating membrane |
| CN103009751A (en) * | 2012-12-25 | 2013-04-03 | 海南赛诺实业有限公司 | Biaxial stretching polypropylene high heat-seal film and manufacturing method thereof |
| CN103009751B (en) * | 2012-12-25 | 2015-04-22 | 海南赛诺实业有限公司 | Biaxial stretching polypropylene high heat-seal film and manufacturing method thereof |
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| Publication number | Publication date |
|---|---|
| CN101758652B (en) | 2012-04-25 |
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Effective date of registration: 20110909 Address after: 20 No. 432500 Yunmeng County of Hubei Province Chengguan Mengzhe Avenue Applicant after: Hubei Firsta Material Science and Technology Group Co., Ltd. Address before: The first 20 building No. 432500 Yunmeng County of Hubei Province Chengguan Mengzhe Avenue 2 floor Sun Lin Technology Center Applicant before: Hubei Firsta Material S&T Co., Ltd. |
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