CN216761123U - Directly moldable polyester base film - Google Patents
Directly moldable polyester base film Download PDFInfo
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- CN216761123U CN216761123U CN202220045324.7U CN202220045324U CN216761123U CN 216761123 U CN216761123 U CN 216761123U CN 202220045324 U CN202220045324 U CN 202220045324U CN 216761123 U CN216761123 U CN 216761123U
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Abstract
The utility model discloses a polyester basal membrane capable of being directly molded, which comprises a core layer, wherein a mold pressing layer mainly comprising amorphous polyester is arranged on the upper surface of the core layer, an anti-sticking layer mainly comprising crystalline polyester is arranged on the lower surface of the core layer, and the hardness of the anti-sticking layer, the core layer and the mold pressing layer is reduced in sequence. The utility model provides a polyester base film capable of being directly molded, which has better molding effect.
Description
Technical Field
The utility model relates to the technical field of polyester films, in particular to a polyester base film capable of being directly molded.
Background
The polyester film has good thermal stability, high stiffness, good die pressing brightness, high quality product rate and the like, is more and more widely applied to the die pressing laser fields of cosmetics, ornaments, cigarette and wine packaging boxes and the like, the existing polyester film can be die pressed only after coating, on one hand, the production processes and coating equipment are increased, and on the other hand, because the coating adopts solvent type coatings, the environmental pollution is caused in the coating process.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a polyester base film capable of being directly molded, and can solve the defects of the prior art.
The technical scheme of the utility model is as follows: the anti-sticking and anti-sticking composite material comprises a core layer, wherein a mould pressing layer with amorphous polyester as a main component is arranged on the upper surface of the core layer, an anti-sticking layer with crystalline polyester as a main component is arranged on the lower surface of the core layer, and the hardness of the anti-sticking layer, the core layer and the mould pressing layer is reduced in sequence.
And a second mould pressing layer which is filled with conductive filler and mainly comprises amorphous polyester is arranged on the upper surface of the mould pressing layer, and the hardness of the second mould pressing layer is not higher than that of the mould pressing layer.
Further the directly moldable polyester based film has a total thickness of between 10 μm and 70 μm, wherein the molding layer has a thickness of between 1 μm and 2 μm and the second molding layer has a thickness of less than 1 μm.
Further the thickness of the mould layer is 1.5 μm and the thickness of the second mould layer is 0.5 μm.
The second molding layer is a transparent layer filled with metal oxide.
By implementing the utility model, the main component of the mould pressing layer is the amorphous polyester, so that the mould pressing layer has lower hardness and melting point, the holographic image can be directly mould pressed, the lower surface of the core layer is provided with the anti-sticking layer for preventing sticking, the hardness of the anti-sticking layer, the core layer and the mould pressing layer is sequentially reduced, the mould pressing area is in a better elastic state in the mould pressing process, and the mould pressing effect is better.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Shown in the figure: a core layer 1; a mold pressed layer 2; an anti-sticking layer 3; a second molded layer 4.
Detailed Description
The embodiment of the utility model comprises the following steps: as shown in figure 1, the holographic image comprises a core layer 1, a mould pressing layer 2 with amorphous polyester as a main component is arranged on the upper surface of the core layer 1, an anti-sticking layer 3 with crystalline polyester as a main component is arranged on the lower surface of the core layer 1, the anti-sticking layer 3, the core layer 1 and the mould pressing layer 2 are formed into the polyester basal membrane capable of being directly mould pressed through multilayer coextrusion, wherein the mould pressing layer 2 comprises 50-90% by weight of non-crystalline polyester slices, the anti-sticking layer 3 and the core layer 1 both comprise more than 50% by weight of crystalline polyester, the thicknesses of the anti-sticking layer 3 and the core layer 1 are the same, the content of the crystalline polyester of the anti-sticking layer 3 is larger than that of the crystalline polyester of the core layer 1, the hardness of the anti-sticking layer 3, the core layer 1 and the mould pressing layer 2 is sequentially reduced, the main component of the mould pressing layer 2 is the amorphous polyester, the mould pressing layer has lower hardness and melting point, the holographic image can be directly mould pressed, the anti-sticking layer 3 is arranged on the lower surface of the core layer 1, the anti-sticking layer is used for preventing sticking, and the holographic image due to the anti-sticking layer 3, The hardness of the core layer 1 and the mold pressing layer 2 is reduced in sequence, and the mold pressing area is in a better elastic state in the mold pressing process, so that the mold pressing effect is better.
Preferably, the upper surface of the molding layer 2 is provided with a second molding layer 4 filled with metal oxide, wherein the amorphous polyester accounts for more than 50 percent of the weight, the thickness, hardness and melting point of the second molding layer 4 are not higher than those of the molding layer 2, the molding pattern needs to reach a certain depth, if the molding layer is too thin, the pattern information is seriously lost, the molding effect is influenced, and if only one molding layer is used, the thickness of the molding layer is relatively thick, and more conductive filler is used for achieving a good antistatic effect, the utility model arranges the molding layer 2 and the second molding layer 4, the total thickness of the molding layer 2 and the second molding layer 4 can be the same as that of the molding layer only using one layer, wherein the thickness of the second molding layer 4 can be thinner, the molding layer 2 does not need to be filled with conductive filler, only the second molding layer 4 needs to be filled with conductive filler, and the same or even better antistatic effect can be achieved by using a smaller amount of conductive filler compared with the molding layer only one layer, the production cost is saved, the filled conductive filler is metal oxide, the tin oxide is optimal, the hue is light, the particle size is small, the good transparency is realized under the condition of meeting the antistatic requirement, and the die pressing effect is not influenced.
Preferably, the thickness of the core layer 1 and the release layer 3 is adjusted to provide a total thickness of the directly moldable polyester base film of between 10 μm and 70 μm, typically between 15 μm and 30 μm, wherein the thickness of the molding layer 2 is between 1 μm and 1.8 μm, the thickness of the second molding layer 4 is between 0.2 μm and 0.5 μm, and the four layers are manufactured by a co-extrusion stretching process.
As a preference, since the depth of the embossed pattern is generally not more than 1.8 μm, if the pattern information is lost seriously due to too thin thickness, which increases the cost, the thickness of the embossed layer is 1.5 μm, and the thickness of the second embossed layer 4 is preferably 0.3 μm.
Claims (5)
1. A directly moldable polyester-based film, characterized in that: the anti-sticking and anti-sticking composite material comprises a core layer, wherein a mould pressing layer with amorphous polyester as a main component is arranged on the upper surface of the core layer, an anti-sticking layer with crystalline polyester as a main component is arranged on the lower surface of the core layer, and the hardness of the anti-sticking layer, the core layer and the mould pressing layer is reduced in sequence.
2. The directly moldable polyester based film of claim 1, wherein: and a second mould pressing layer which is filled with conductive filler and mainly comprises amorphous polyester is arranged on the upper surface of the mould pressing layer, and the hardness of the second mould pressing layer is not higher than that of the mould pressing layer.
3. The directly moldable polyester based film of claim 2, wherein: the directly moldable polyester base film has a total thickness of between 10 μm and 70 μm, wherein the molding layer has a thickness of between 1 μm and 2 μm and the second molding layer has a thickness of less than 1 μm.
4. The directly moldable polyester based film of claim 3, wherein: the thickness of the molding layer was 1.5 μm and the thickness of the second molding layer was 0.5 μm.
5. The directly moldable polyester based film of claim 2, wherein: the second mold pressing layer is a transparent layer filled with metal oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220045324.7U CN216761123U (en) | 2022-01-10 | 2022-01-10 | Directly moldable polyester base film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220045324.7U CN216761123U (en) | 2022-01-10 | 2022-01-10 | Directly moldable polyester base film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216761123U true CN216761123U (en) | 2022-06-17 |
Family
ID=81977298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220045324.7U Active CN216761123U (en) | 2022-01-10 | 2022-01-10 | Directly moldable polyester base film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216761123U (en) |
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2022
- 2022-01-10 CN CN202220045324.7U patent/CN216761123U/en active Active
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