CN2794811Y - Laser moulding polyester film - Google Patents
Laser moulding polyester film Download PDFInfo
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- CN2794811Y CN2794811Y CN 200520082052 CN200520082052U CN2794811Y CN 2794811 Y CN2794811 Y CN 2794811Y CN 200520082052 CN200520082052 CN 200520082052 CN 200520082052 U CN200520082052 U CN 200520082052U CN 2794811 Y CN2794811 Y CN 2794811Y
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- polyester film
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Abstract
The utility model discloses a novel laser moulding polyester film which has a layer structure. The upper surface layer of the layer structure is a laser moulding layer taking polyester copolymer as the main component. The laser moulding layer is in direct coextrulamination with a sandwich layer taking polyester homopolymer as the main component. The utility model can directly carry out moulding on the laser moulding layer to form holographic images, which omits the process of coating a holographic imaging layer on an ordinary polyester film at present, solves the problems of low work efficiency and high production cost in the current traditional method of producing the laser moulding polyester film, improves the quality of products and further widens the application area of the polyester film.
Description
Technical field
The utility model relates to the polyester film production technical field, a kind of laser molding polyester film of more specifically saying so.
Background technology
Recently during the last ten years, development and progress along with packaging industry, a kind of have an anti-fraud functional plastic film product, laser molding film (or claiming holographic false proof moulding film, mode of laser press mold) beginning is used for the plastic film packaging of high-grade goods, for example high-grade cigarette, high-grade famous brand of wine, high-grade commodity or the like in large quantities.
At present, known laser molding polyester film is divided into two kinds, and a kind of is the composite mould pressing film, is characterized in that the polyester film that mold pressing is had a hologram image layer directly uses with the compound back of other packaging material, for example makes cigarette pack with paperboard after compound; Another kind is the transfevent moulding film, is characterized in transferring on other material and using being embossed in hologram image layer on the polyester film surface by certain mode.
At present, the production of laser molding polyester film mainly realizes by coating process, promptly the way by coating special resin on the surface of conventional polyester film forms embossed plies (or claiming image layer, imaging layer, hologram layer, laser layer etc.), then carry out the picture that is molded into of hologram image, be molded into the polyester film behind the picture or directly use (for example with paperboard compound then make cigarette pack), perhaps hologram image is transferred on other carrier and (for example transferred to and make cigarette pack on the paperboard) by the effect of transfer adhesive adhesion coating with the compound back of other packaging material.In general, in the process of laser molding polyester film,, cry hard the pressure usually if on imaging layer, aluminize the back mold pressing earlier.If first mold pressing is aluminized again on imaging layer, be " soft pressure " usually.
For the composite mould pressing film of producing with rubbing method, complex process not only, cost is more expensive, and has a series of homogeneity questions such as coating, planarization problem, temperature stability problem or the like, thus influenced the quality stability of molded product.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of laser molding polyester film that can directly carry out mold pressing on the film top layer is provided, to solve the polyester film of producing by rubbing method at present, the quality stability of its molded product is poor, the problem that production cost is high.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of laser molding polyester film, has layer structure, the upper epidermis of this layer structure is that main component is the laser molding layer of polyester copolymer, and it is the sandwich layer of polyester homopolymer that the direct coextru-lamination of this laser molding layer has main component.
The characteristics of technique scheme are, because polyester copolymer belongs to noncrystalline or the low-crystalline material, and fusing point and softening point are very low, so be very easy to form hologram image on its surface by the mold pressing of hologram image mold pressing version.If carry out vacuum aluminum-coatedly at the hologram image layer upper surface of its mold pressing, just form " soft pressure " radium-shine film.Perhaps,, just form " the hard pressure " radium-shine film if on hologram image layer, aluminize mold pressing more earlier with upper film.
With the laser molding film that the utility model is produced, saved the painting process of mold pressing medium (image layer), not only improved efficient, reduce production cost, and improved product quality, expanded the application of anti-fake product.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing is the structure cutaway view of the utility model embodiment.
The specific embodiment
As shown in drawings, a kind of novel laser molding polyester film, or claim holographic false proof mold pressing polyester film, laser anti-counterfeit mold pressing polyester film etc., be three-layer co-extruded composite construction.The upper epidermis of this layer structure is that main component is the laser molding layer 1 of polyester copolymer, and it is the sandwich layer 2 of polyester homopolymer that this laser molding layer 1 direct coextru-lamination has main component.It is the following top layer 3 of polyester homopolymer that the direct coextru-lamination in another surface of sandwich layer 2 has main component.
The gross thickness 16 μ m of this laser molding film, wherein:
Following top layer 3 thickness are 2 μ m, select for use the additive of the section of 75% polyester homopolymer and 25% to cut into slices;
Above-mentioned additive section is silica containing polyester homopolymer, and wherein the content of silica in the additive section is 3000ppm by weight.
Simultaneously as required, the thickness on laser molding layer 1, following top layer 3 also can be controlled at respectively within the scope of 0.5 μ m～10 μ m, by adjusting the thickness of sandwich layer 2, the gross thickness of polyester film can be adjusted in the scope of 8 μ m～80 μ m; Generally, the polyester film gross thickness is generally 12 μ m～36 μ m.The thickness of laser molding layer 1 is generally about 2 μ m, and the thickness on following top layer 3 is generally also about 2 μ m.
The production technology of present embodiment mainly comprises the steps:
It is dry that A, sandwich layer 2 raw materials mix the back, enters extruder and melt body, through pre-filtering, measuring pump, the main filtration, enters die head again;
The raw material on B laser molding layer 1 and following top layer 3 enters each self-corresponding double screw extruder after evenly mixing respectively, becomes and melts body, vacuumizes at the extruder place and gets rid of steam and oligomer, through pre-filtering, measuring pump, the main filtration, enters die head again;
Three layers that form among C, A and the B melt body and flow out after die head converges, and are pressed on the chilling roller by the Electrostatic Absorption band, and cooling forms the casting sheet rapidly; The casting sheet is successively through vertically and walk crosswise stretching (draw ratio all is 3.5);
After the basement membrane cooling after D, the stretching, thickness measuring, limit portion cut edge, eliminate static and rolling again.
E, cut into the finished product of client's needs according to client's needs.
The laser molding polyester film of the 16 μ m that produce by said ratio and process conditions, its physical performance index sees the following form.
| Project | Unit | Test value | Method of testing | |
| Hot strength | Longitudinal stretching | N/mm 2 | 210 | ASTM D 882 |
| Cross directional stretch | N/mm 2 | 210 | ||
| Elastic modelling quantity | Longitudinal stretching | N/mm 2 | 4000 | |
| Cross directional stretch | N/mm 2 | 4200 | ||
| Elongation at break | Longitudinal stretching | ％ | 140 | |
| Cross directional stretch | ％ | 130 | ||
| Percent thermal shrinkage | Longitudinal stretching | ％ | 1.5 | 150℃/30min |
| Cross directional stretch | ％ | 0 | ||
| Mist degree | ％ | 2.2 | ASTM D1003 | |
| Glossiness | ％ | 130 | ASTM D2457 | |
| Coefficient of friction | μ s/μ k | 0.5/0.4 | ASTM D 1894 | |
| Light transmittance | ％ | 88 | ||
| The mold pressing surface wetting tension | Mn/m | 48 | ASTM D 2578 | |
| Molding temperature | ℃ | 100℃-200℃ |
The specific embodiment has only been enumerated an above-mentioned embodiment, and the product of other thickness, prescription as the laser molding polyester film of specifications such as 19 μ m, 23 μ m, 30 μ m, 36 μ m, is adjusted related process as long as press domain knowledge.
More than be to adopt two-step stretch method biaxial tension processing technology to realize, by the chilling roller cool off rapidly forms sheet after, also can adopt and carry out the synchro-draw method production that vertical and horizontal stretch simultaneously.
The radium-shine BOPET mold pressing polyester film that the utility model disclosed has following characteristics: 1) be not limited to three retes, also can be 2 layers, but be at least two-layer.2) laser molding layer 1 is positioned at the top layer of layer structure film.3) because polyester copolymer is noncrystalline (or degree of crystallinity is very low),, can form hologram image by the mold pressing of hologram image mold pressing version easily so fusing point is lower.
Claims (3)
1, a kind of laser molding polyester film, it is characterized in that: have layer structure, the upper epidermis of this layer structure is that main component is the laser molding layer (1) of polyester copolymer, and it is the sandwich layer (2) of polyester homopolymer that the direct coextru-lamination of this laser molding layer (1) has main component.
2, a kind of laser molding polyester film as claimed in claim 1, it is characterized in that: layered structure is three layers, it is the following top layer (3) of polyester homopolymer that the direct coextru-lamination in another surface of described sandwich layer (2) has main component.
3, a kind of laser molding polyester film as claimed in claim 2 is characterized in that: the gross thickness of described laser molding polyester film is 12 μ m～36 μ m, and wherein the thickness on upper epidermis (1) and following top layer (3) is respectively 2 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520082052 CN2794811Y (en) | 2005-04-02 | 2005-04-02 | Laser moulding polyester film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520082052 CN2794811Y (en) | 2005-04-02 | 2005-04-02 | Laser moulding polyester film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2794811Y true CN2794811Y (en) | 2006-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520082052 Expired - Lifetime CN2794811Y (en) | 2005-04-02 | 2005-04-02 | Laser moulding polyester film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2794811Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102119079A (en) * | 2008-06-12 | 2011-07-06 | 3M创新有限公司 | Biocompatible hydrophilic compositions |
| CN105619983A (en) * | 2015-12-25 | 2016-06-01 | 杭州大东南高科包装有限公司 | Transfer type laser impressing polyester film and preparing method thereof |
| CN107877958A (en) * | 2017-09-29 | 2018-04-06 | 安徽国风塑业股份有限公司 | A kind of molding laser BOPET film without silane coupling agent and preparation method thereof |
| CN112644134A (en) * | 2019-12-27 | 2021-04-13 | 富维薄膜（山东）有限公司 | Laser mould pressing polyester film |
-
2005
- 2005-04-02 CN CN 200520082052 patent/CN2794811Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102119079A (en) * | 2008-06-12 | 2011-07-06 | 3M创新有限公司 | Biocompatible hydrophilic compositions |
| CN102119079B (en) * | 2008-06-12 | 2014-09-10 | 3M创新有限公司 | Biocompatible hydrophilic compositions |
| CN105619983A (en) * | 2015-12-25 | 2016-06-01 | 杭州大东南高科包装有限公司 | Transfer type laser impressing polyester film and preparing method thereof |
| CN105619983B (en) * | 2015-12-25 | 2018-01-23 | 杭州大东南高科包装有限公司 | A kind of transfevent laser imprinting polyester film and preparation method thereof |
| CN107877958A (en) * | 2017-09-29 | 2018-04-06 | 安徽国风塑业股份有限公司 | A kind of molding laser BOPET film without silane coupling agent and preparation method thereof |
| CN107877958B (en) * | 2017-09-29 | 2019-11-29 | 安徽国风塑业股份有限公司 | A kind of BOPET film and preparation method thereof of the no silane coupling agent of molding laser |
| CN112644134A (en) * | 2019-12-27 | 2021-04-13 | 富维薄膜（山东）有限公司 | Laser mould pressing polyester film |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150402 Granted publication date: 20060712 |