CN202727490U - Thermal shrinkage polyester film - Google Patents
Thermal shrinkage polyester film Download PDFInfo
- Publication number
- CN202727490U CN202727490U CN 201220434001 CN201220434001U CN202727490U CN 202727490 U CN202727490 U CN 202727490U CN 201220434001 CN201220434001 CN 201220434001 CN 201220434001 U CN201220434001 U CN 201220434001U CN 202727490 U CN202727490 U CN 202727490U
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- China
- Prior art keywords
- polyester film
- heat shrinkable
- polyester
- thermal shrinkage
- antiblocking agent
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- Expired - Fee Related
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- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The utility model relates to the technical field of plastic films and provides a thermal shrinkage polyester film. The thermal shrinkage polyester film has at least three layers of structures and comprises an anti-blocking agent polyester surface layer and a polyester core layer. According to the thermal shrinkage polyester film, the using amount of anti-blocking agents is reduced, the cost is saved, and the product transparency is improved.
Description
Technical field
The utility model relates to the plastic sheeting technical field, is specially a kind of heat shrinkable polyester film.
Background technology
Heat-shrinkable film had certain contractility and is widely used because of when heating under predetermined temperature, for example: mark bottle, battery pack, packing container and other products.Heat-shrinkable film commonly used is by polyvinyl chloride (PVC), and polystyrene (OPS) or polyester (PET) are made.
The heat shrink films of being made by PVC and OPS is relative relatively poor at aspects such as shrinkage factor and printing and dyeing property, especially can emit poisonous pollutant when burning, and does not meet the developing direction of green industry, and use step by step has been under an embargo.The PET heat shrink films is because having good heat resistance, and chemical resistance, shrinkage and printing and dyeing and caused people's concern belong to the shrink-down material of a new generation, and more meets environmental protection, green, New Times requirement attractive in appearance, has broad application prospects.
But existing heat shrinkable polyester film is by simple tension technique mostly, cross directional stretch explained hereafter particularly, and production efficiency is low, percent thermal shrinkage on film is vertical and hot strength etc. can not get effective control, and adopt single layer structure, the antiblocking agent consumption is large more, and the film transparency is poor.So that heat-shrinkable film in use, in special-shaped bottle cover mark process, causes shrinking inhomogeneous, aesthetics is poor like this, tears the problems such as difficulty behind the cover mark.
The utility model content
Technical problem to be solved in the utility model is: a kind of heat shrinkable polyester film that has at least three-decker is provided, only adds antiblocking agent in the polyester of top layer, to reduce the consumption of antiblocking agent, not only save cost, also improve the product transparency.
For solving the problems of the technologies described above, the utility model provides following technical scheme:
A kind of heat shrinkable polyester film, described heat shrinkable polyester film has three-decker at least, comprises at least one antiblocking agent polyester surface and a polyester sandwich layer.
Preferably, described heat shrinkable polyester film gross thickness is 20-80 μ m, and described sandwich layer accounts for the 80%-90% of described heat shrinkable polyester film gross thickness.
Preferably, described heat shrinkable polyester film has three-decker, comprises two antiblocking agent polyester surfaces and a polyester sandwich layer.
After having adopted technique scheme, the beneficial effects of the utility model are: because described heat shrinkable polyester film has three-decker at least, comprise at least one antiblocking agent polyester surface and a polyester sandwich layer, therefore, greatly reduced the use of antiblocking agent, not only save cost, also improved the product transparency, also be beneficial to the research to the heat-shrinkable film differentiated products simultaneously.Be suitable for use as the packaging material of mark bottle, battery pack, packing container etc., in particular as the cover timestamp of special-shaped bottle, greatly improved contraction uniformity and aesthetics in the product use procedure.
Description of drawings
Fig. 1 is that the utility model specific embodiment is used the state perspective view;
Wherein, 1,2. antiblocking agent polyester surface; 3. polyester sandwich layer.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.
A kind of heat shrinkable polyester film as shown in Figure 1, adopt three-layer co-extruded and biaxial tension technology to be prepared from, have two antiblocking agent polyester surfaces 1,2 and polyester sandwich layers 3, gross thickness is 45 μ m, in order to reduce the consumption of antiblocking agent, two antiblocking agent polyester surfaces 1 only, add antiblocking agent in 2, its antiblocking agent is silica, silica is at antiblocking agent polyester surface 1, quality in 2 is 900ppm than consumption, two top layers account for 15% of polyester film gross thickness altogether, polyester sandwich layer 3 accounts for 85% of gross thickness, wherein two antiblocking agent polyester surfaces 1,2 thickness can be identical with raw material, also can be different.
Between the draw roll of longitudinal stretching and chill roll, increase some Heat treating rolls, the longitudinal stretching of appropriateness not only can be enhanced productivity, can also improve heat shrink films mechanical performance in the vertical, make in the vertical ordered arrangement of polyester molecule, easily tear from bottle behind the cover mark.Add vertical thermal treatment zone, polyester molecule obtains hot lax fully behind longitudinal stretching, processes 10s in 90 ℃ of hot water, and the longitudinal contraction rate is controlled in 3%, and on not impact of lateral shrinkage, improve contraction uniformity and aesthetics in special-shaped bottle cover mark process.
Production of the present utility model increases some Heat treating rolls between the draw roll of longitudinal stretching and chill roll, after stretched, transverse tensile strength is 252MPa, and longitudinal tensile strength is 61Mpa, processed in 90 ℃ of hot water 10 seconds, its lateral shrinkage is 74%, the longitudinal contraction rate is 2.5%.
The concrete production process of the utility model heat shrinkable polyester film may further comprise the steps: raw material set-up procedure, fill process, extrusion, slab process, longitudinal stretching process, cross directional stretch process, traction wrapup procedure.
Table 1 is the contrast of the performance indications of the performance indications of heat shrinkable polyester film of the present utility model and the heat shrinkable polyester film that individual event stretches:
Table 1
The utility model heat shrinkable polyester film has greatly reduced the use of antiblocking agent, not only saves cost, has also improved the product transparency.
The utility model is suitable for use as the packaging material such as mark bottle, battery pack, packing container, in particular as the cover timestamp of special-shaped bottle, has greatly improved contraction uniformity and aesthetics in the product use procedure.
The utility model is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done all drop within the protection domain of the present utility model.
Claims (3)
1. heat shrinkable polyester film, it is characterized in that: described heat shrinkable polyester film has three-decker at least, comprises at least one antiblocking agent polyester surface and a polyester sandwich layer.
2. a kind of heat shrinkable polyester film as claimed in claim 1, it is characterized in that: described heat shrinkable polyester film gross thickness is 20-80 μ m, and described sandwich layer accounts for the 80%-90% of described heat shrinkable polyester film gross thickness.
3. a kind of heat shrinkable polyester film as claimed in claim 1 or 2, it is characterized in that: described heat shrinkable polyester film has three-decker, comprises two antiblocking agent polyester surfaces and a polyester sandwich layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220434001 CN202727490U (en) | 2012-08-28 | 2012-08-28 | Thermal shrinkage polyester film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220434001 CN202727490U (en) | 2012-08-28 | 2012-08-28 | Thermal shrinkage polyester film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202727490U true CN202727490U (en) | 2013-02-13 |
Family
ID=47653230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220434001 Expired - Fee Related CN202727490U (en) | 2012-08-28 | 2012-08-28 | Thermal shrinkage polyester film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202727490U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738015A (en) * | 2013-10-18 | 2014-04-23 | 杭州大东南高科包装有限公司 | Transverse-thermal-shrinkage bidirectional stretching polyester thin film and preparation method thereof |
| CN104608448A (en) * | 2015-01-30 | 2015-05-13 | 山东圣和塑胶发展有限公司 | Two-way stretch polylactic acid film capable of being directly thermally sealed and preparation method of two-way stretch polylactic acid film |
| CN106273949A (en) * | 2016-08-17 | 2017-01-04 | 东莞市亚兰包装材料制品有限公司 | A kind of ultra-thin prestretched PE is wound around film |
| CN106626679A (en) * | 2016-11-17 | 2017-05-10 | 安徽国风塑业股份有限公司 | High-strength and two-way-stretching PEN film and preparation method thereof |
-
2012
- 2012-08-28 CN CN 201220434001 patent/CN202727490U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738015A (en) * | 2013-10-18 | 2014-04-23 | 杭州大东南高科包装有限公司 | Transverse-thermal-shrinkage bidirectional stretching polyester thin film and preparation method thereof |
| CN103738015B (en) * | 2013-10-18 | 2016-08-17 | 杭州大东南高科包装有限公司 | A kind of transverse-thermal-sbidirectional bidirectional stretching polyester thin film and preparation method thereof |
| CN104608448A (en) * | 2015-01-30 | 2015-05-13 | 山东圣和塑胶发展有限公司 | Two-way stretch polylactic acid film capable of being directly thermally sealed and preparation method of two-way stretch polylactic acid film |
| CN106273949A (en) * | 2016-08-17 | 2017-01-04 | 东莞市亚兰包装材料制品有限公司 | A kind of ultra-thin prestretched PE is wound around film |
| CN106626679A (en) * | 2016-11-17 | 2017-05-10 | 安徽国风塑业股份有限公司 | High-strength and two-way-stretching PEN film and preparation method thereof |
| CN106626679B (en) * | 2016-11-17 | 2018-11-02 | 安徽国风塑业股份有限公司 | A kind of high intensity biaxial tension PEN films and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20210828 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |