CN101049750B - Stick resistant heat shrinkage film - Google Patents
Stick resistant heat shrinkage film Download PDFInfo
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- CN101049750B CN101049750B CN2007100397016A CN200710039701A CN101049750B CN 101049750 B CN101049750 B CN 101049750B CN 2007100397016 A CN2007100397016 A CN 2007100397016A CN 200710039701 A CN200710039701 A CN 200710039701A CN 101049750 B CN101049750 B CN 101049750B
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- heat shrinkage
- resistant heat
- shrinkage film
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Abstract
An antisticking thermoshrinking film is prepared from PE layer and antisticking layer through extruding out. Said antisticking layer is prepared from PP and/or PS and/or PET through mixing.
Description
Technical field
The invention belongs to plastic products, field of packaging material, relate to the polyethylene heat-shrinkable film.
Background technology
The packing of commodity for the storage of commodity, transport, guarantee the quality, beautify and have important function.Traditional manner of packing mainly is packed in cases and enlacement packaging.But along with making rapid progress of progress, the product of expanding economy, science and technology, and people's life is tending towards convenient and leisure more, and the packing of product has also been had higher requirement.Based on this, along with the appearance of new material, people begin to adopt polyethylene (PE) heat-shrinkable film to pack to replace packed in cases and tie up.The polyethylene heat-shrinkable film has lot of advantages as packing: economical with materials, reduce cost, protection against the tide, health, easy to use; Attractive in appearance, the conserve space of commodity after the packing.The heat-shrinkable film packing can be accomplished " fit " packing, makes commodity have distinguished outward appearance; The technology of the package of heat-shrinkable film packing is also simple especially, as long as heating just can be finished packaging process to heat-shrinkable film, improved the production efficiency of commodity packaging.
Consider from the cost and the intensity of packing, existing polyethylene heat-shrinkable film adopts three layers version usually, every layer is LDPE (low density polyethylene (LDPE)), HDPE (high density polyethylene (HDPE)), LLDPE (LLDPE) mixing, and just three's mixing ratio is different in each layer.
This polyethylene heat-shrinkable film generally is used for assembly package (a plurality of commodity or a plurality of inner wrapping are packaged into big packing), if the top layer of content is PE, cause easily in the pyrocondensation drying tunnel that then the top layer of outer field polyethylene heat-shrinkable film and content sticks together.As shown in Figure 1, this is laughable packing schematic diagram, at first with polyethylene heat-shrinkable film 01 6 jars of colas 02 is packaged into a group, and then with polyethylene heat-shrinkable film 01 cola of four groups is packaged into one and organizes greatly.In group being packaged into big group process, in the thermal contraction drying tunnel, the polyethylene heat-shrinkable film 01 of the polyethylene heat-shrinkable film 01 of packing group and the big group of packing can be sticked together owing to having identical polarity and softening temperature between the two.
Summary of the invention
Purpose of the present invention aims to provide a kind of stick resistant heat shrinkage film, and this heat-shrinkable film has anti-adhesion characteristic, can not stick together with the PE top layer of content, thereby overcomes the defective that existing heat-shrinkable film exists.
To achieve these goals, the present invention adopts following technical scheme:
A kind of stick resistant heat shrinkage film is layer structure, it is characterized in that: be made of PE layer and adherent layer co-extrusion, wherein adherent layer is mixture or the mixture of PS and PE or the mixture of PET and PE of PP or PS or PET or PP and PE.
For cost consideration, in a preferred embodiment of the invention, described PE layer is divided into two-layer, and the upper and lower mix by LDPE, HDPE and LLDPE, and this two-layer mixing ratio difference.
During packing, allow adherent layer contact with the PE top layer of content, because PP, PS, PET have higher softening point than PE, thus this when just making in hot drying tunnel heating this stick resistant heat shrinkage film can not stick together and improved the packaging quality of film with the PE top layer of content.
Description of drawings
The present invention is described in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the structural representation of existing polyethylene heat-shrinkable film;
Fig. 2 is laughable packing schematic diagram;
Fig. 3 is a structural representation of the present invention.
Among the figure:
01, polyethylene heat-shrinkable film 02, cola
1, PE layer 11, upper strata 12, lower floor 2, adherent layer
The specific embodiment
Stick resistant heat shrinkage film as shown in Figure 3, comprise PE layer 1 (part that empty frame line comprises) and adherent layer 2, described PE layer 1 has again and is divided into two-layerly, and two-layer LDPE, HDPE and the LLDPE of being mixes, and wherein mixing ratio is: LDPE3～8 part, LLDPE0.5～3.5 part, HDPE0～4 part.In actual product, this two-layer mixing ratio is different, as in the present embodiment preferred version, and the mixing ratio on upper strata 11: LDPE6 part, LLDPE2 part, HDPE2 part; The mixing ratio of lower floor 12: LDPE5 part, LLDPE2 part, HDPE3 part.Such benefit is neither to reduce the performance of antiseized heat shrink films, also can save cost.
Described adherent layer 2 adopts the mixture of PP (polypropylene) and PE.At the PE of this layer is LDPE and LLDPE.Mixing ratio: PP0.5～10 part, LDPE0～5 part, LLDPE0～4 part.Preferred mixing ratio: PP3 part, LDPE4 part, LLDPE3 part.
Because the softening point temperature of adherent layer is 120～130 ℃ in this stick resistant heat shrinkage film, 110～120 ℃ of softening point temperatures that are higher than PE, so be used to pack content with this stick resistant heat shrinkage film with PE top layer, the PE top layer that film and content take place the Shi Buhui that is heated in the hot drying tunnel situation that sticks together, thus packaging quality improved.
Based on same principle, above-mentioned adherent layer can adopt 100%PP or the mixture of 100%PS or 100%PET or PS and PE or the mixture of PET and PE.
Certain described PE layer can have only one deck, also can be two-layer more than, as long as determine that according to the desired performance indications of product suitable LDPE, LLDPE and HDPE mixing ratio are just passable.
Claims (2)
1. a stick resistant heat shrinkage film is layer structure, it is characterized in that: be made of PE layer and adherent layer co-extrusion, described PE layer is divided into two-layer, and the upper and lower mix by LDPE, HDPE and LLDPE, and this two-layer mixing ratio difference; Described adherent layer is mixture or the mixture of PS and PE or the mixture of PET and PE of PP or PS or PET or PP and PE.
2. a kind of stick resistant heat shrinkage film according to claim 1 is characterized in that: described adherent layer is the mixture of PP and PE, and the PE of this layer is LDPE and LLDPE, and wherein PP is 0.5～10 part, and LDPE is 4～5 parts, and LLDPE is 3～4 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100397016A CN101049750B (en) | 2007-04-20 | 2007-04-20 | Stick resistant heat shrinkage film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100397016A CN101049750B (en) | 2007-04-20 | 2007-04-20 | Stick resistant heat shrinkage film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101049750A CN101049750A (en) | 2007-10-10 |
| CN101049750B true CN101049750B (en) | 2010-10-27 |
Family
ID=38781447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100397016A Expired - Fee Related CN101049750B (en) | 2007-04-20 | 2007-04-20 | Stick resistant heat shrinkage film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101049750B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140124790A (en) * | 2012-03-23 | 2014-10-27 | 다이이찌 산쿄 가부시키가이샤 | Layered body for ptp or blister pack, and ptp or blister pack |
| CN105584178A (en) * | 2016-01-12 | 2016-05-18 | 东莞市华宇包装有限公司 | Color shrink film and preparation method thereof |
| CN106113858B (en) * | 2016-06-24 | 2018-02-02 | 佛山市顺德区金潮宇新材料有限公司 | A kind of multilayer heat shrinkable film |
| CN109732891A (en) * | 2019-01-03 | 2019-05-10 | 大连大诺印刷包装有限公司 | A kind of production technology of M resin |
| CN111100413B (en) * | 2019-12-27 | 2022-05-06 | 东莞市正新包装制品有限公司 | PE shrink film |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201070863Y (en) * | 2007-04-20 | 2008-06-11 | 上海紫泉标签有限公司 | Polythene anti-sticking thermal contraction film |
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2007
- 2007-04-20 CN CN2007100397016A patent/CN101049750B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201070863Y (en) * | 2007-04-20 | 2008-06-11 | 上海紫泉标签有限公司 | Polythene anti-sticking thermal contraction film |
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| Publication number | Publication date |
|---|---|
| CN101049750A (en) | 2007-10-10 |
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