CN113997608A - Production method of high-temperature-resistant polyester film - Google Patents
Production method of high-temperature-resistant polyester film Download PDFInfo
- Publication number
- CN113997608A CN113997608A CN202111228518.7A CN202111228518A CN113997608A CN 113997608 A CN113997608 A CN 113997608A CN 202111228518 A CN202111228518 A CN 202111228518A CN 113997608 A CN113997608 A CN 113997608A
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- China
- Prior art keywords
- polyester film
- temperature
- heat treatment
- treatment
- producing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 229920006267 polyester film Polymers 0.000 title claims abstract description 71
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000000137 annealing Methods 0.000 claims abstract description 4
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 238000007493 shaping process Methods 0.000 claims abstract description 3
- 238000003851 corona treatment Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
- B29C2071/022—Annealing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/003—PET, i.e. poylethylene terephthalate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a production method of a high-temperature-resistant polyester film, which comprises the following steps: step 1), producing the polyester film in a ten thousand-grade clean room, and performing high-temperature heat treatment at 150-300 ℃ by adopting a heat treatment mode; step 2), performing shrinkage treatment on the polyester film during high-temperature heat treatment to give a certain tension to the polyester film; step 3), after the polyester film is tightened, the polyester film reaches a certain temperature and the temperature does not influence the polyester film any more, and then annealing treatment is carried out; step 4), shaping the polyester film; and 5) rolling the finished polyester film. The invention has the beneficial effects that: the invention adopts a pre-shrinking heat treatment mode, and the finished polyester film can resist the high temperature of more than 200 ℃ and the limit high temperature of 250 ℃.
Description
Technical Field
The invention relates to the technical field of polyester films, in particular to a production method of a high-temperature-resistant polyester film.
Background
Polyester film (PET) is a high molecular plastic film, and is more and more popular among consumers due to its excellent comprehensive performance. As the production capacity and the technical level in China still cannot meet the requirements of the market, part of the production capacity and the technical level still need to depend on import. Particularly, the core technology of the high temperature resistant polyester film (PET) is mastered by foreign companies for a long time, and the import price is high, so that the development of a production method of the high temperature resistant polyester film (PET) is required.
At present, the electronic industry needs polyester film (PET) with better performance, the main performance requirement is that the high temperature resistance of the polyester film needs to be further improved, after the development of several years, the high temperature resistant polyester film (PET) is the general requirement of the electronic industry, and because of the low price of the polyester film relative to the PI film, the polyester film partially replaces the PI film in the field of flexible electronic circuits, occupies 50% of market share, and is mainly imported. Therefore, if a high-temperature resistant polyester film can be developed in China, the high-temperature resistant polyester film can replace an imported product, so that the material is brought to the soft electronic circuit industry, the industry requires that the high-temperature resistant polyester film (PET) is very flat, pollution and flaw are avoided, the temperature resistance needs to meet certain requirements, generally more than 200 ℃, the basic performance needs to be consistent with that of an original film, and the high-temperature resistant polyester film is free of impurities, uneven and has flaws.
Disclosure of Invention
The present invention is directed to a method for producing a high temperature resistant polyester film, which solves the above problems.
The technical problem solved by the invention can be realized by adopting the following technical scheme:
the production method of the high-temperature-resistant polyester film is characterized by comprising the following steps of:
step 1), producing the polyester film in a ten thousand-grade clean room, and performing high-temperature heat treatment at 150-300 ℃ by adopting a heat treatment mode;
step 2), performing shrinkage treatment on the polyester film during high-temperature heat treatment to give a certain tension to the polyester film;
step 3), after the polyester film is tightened, the polyester film reaches a certain temperature and the temperature does not influence the polyester film any more, and then annealing treatment is carried out;
step 4), shaping the polyester film;
and 5) rolling the finished polyester film.
In a preferred embodiment of the present invention, in step 1), the temperature of the high temperature heat treatment is 200 ℃.
In a preferred embodiment of the invention, in step 2), the shrinkage of the shrinking treatment is < 0.2%, and the temperature of the reducing heat treatment is 200 ℃ for 30 min.
In a preferred embodiment of the present invention, in step 4), the surface of the polyester film is simultaneously subjected to corona treatment to increase the surface processability.
Due to the adoption of the technical scheme, the invention has the beneficial effects that: the invention adopts a pre-shrinking heat treatment mode, and the finished polyester film can resist the high temperature of more than 200 ℃ and the limit high temperature of 250 ℃.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of the production flow of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below.
Referring to fig. 1, a method for producing a high temperature resistant polyester film comprises the following steps:
step 1), producing the polyester film a in a ten thousand-grade clean room, and performing high-temperature heat treatment at 150-300 ℃ by adopting a heat treatment mode. The temperature of the high-temperature heat treatment in the present embodiment is preferably 200 ℃. Specifically, the polyester film is conveyed to a multi-temperature-zone heat reflux box 10 for high-temperature heat treatment by unwinding through a guide roller 1, and the heat treatment time is controlled by the multi-temperature-zone heat reflux box 10, so that the optimal heat treatment temperature and time are preferably selected. A purification device 20 is additionally arranged on the multi-temperature-zone hot reflux box 10 for dedusting, and the purification device 20 controls dust in a workshop, cleans the environment and removes dust on the ground.
And 2) performing shrinkage treatment when the polyester film is subjected to high-temperature heat treatment to give a certain tension to the polyester film. The shrinkage rate of the shrinkage treatment in this example was < 0.2%, the temperature of the heat treatment was lowered to 200 ℃ and the time was 30 min. In order to solve the problem of uneven polyester film, the tension is increased through the guide roller 1, and the guide roller 1 has a dust adhering function so as to remove defective products caused by the pollution of the polyester film contacting the guide roller 1,
and 3) after the polyester film is tightened, enabling the polyester film to reach a certain temperature and enabling the temperature not to influence the polyester film any more, and then carrying out annealing treatment.
And 4), setting the polyester film, and simultaneously carrying out corona treatment on the surface of the polyester film to increase the surface processability.
And 5) rolling the finished polyester film.
By using the production method of the invention, the polyester film can resist the high temperature of more than 200 ℃, and the limit high temperature resistance can reach 250 ℃.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The production method of the high-temperature-resistant polyester film is characterized by comprising the following steps of:
step 1), producing the polyester film in a ten thousand-grade clean room, and performing high-temperature heat treatment at 150-300 ℃ by adopting a heat treatment mode;
step 2), performing shrinkage treatment on the polyester film during high-temperature heat treatment to give a certain tension to the polyester film;
step 3), after the polyester film is tightened, the polyester film reaches a certain temperature and the temperature does not influence the polyester film any more, and then annealing treatment is carried out;
step 4), shaping the polyester film;
and 5) rolling the finished polyester film.
2. The method for producing a high temperature resistant polyester film as claimed in claim 1, wherein the temperature of the high temperature heat treatment in step 1) is 200 ℃.
3. The method for producing a high temperature resistant polyester film as claimed in claim 1, wherein in the step 2), the shrinkage rate of the shrinking treatment is less than 0.2%, the temperature of the heat treatment is 200 ℃ and the time is 30 min.
4. The method for producing a high temperature resistant polyester film as claimed in claim 1, wherein in the step 4), the surface of the polyester film is simultaneously subjected to corona treatment to increase the surface processability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111228518.7A CN113997608A (en) | 2021-10-21 | 2021-10-21 | Production method of high-temperature-resistant polyester film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111228518.7A CN113997608A (en) | 2021-10-21 | 2021-10-21 | Production method of high-temperature-resistant polyester film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113997608A true CN113997608A (en) | 2022-02-01 |
Family
ID=79923486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111228518.7A Pending CN113997608A (en) | 2021-10-21 | 2021-10-21 | Production method of high-temperature-resistant polyester film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113997608A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104044281A (en) * | 2013-03-11 | 2014-09-17 | 远东新世纪股份有限公司 | Thermal contraction polyester film preparation method |
| CN205310974U (en) * | 2015-11-24 | 2016-06-15 | 广东东立新材料科技有限公司 | Low shrink polyester protection film that ITOFILM is high temperature resistant |
| CN110435127A (en) * | 2019-08-13 | 2019-11-12 | 苏州鼎政电子科技有限公司 | High temperature resistant PET protection film production technology |
-
2021
- 2021-10-21 CN CN202111228518.7A patent/CN113997608A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104044281A (en) * | 2013-03-11 | 2014-09-17 | 远东新世纪股份有限公司 | Thermal contraction polyester film preparation method |
| CN205310974U (en) * | 2015-11-24 | 2016-06-15 | 广东东立新材料科技有限公司 | Low shrink polyester protection film that ITOFILM is high temperature resistant |
| CN110435127A (en) * | 2019-08-13 | 2019-11-12 | 苏州鼎政电子科技有限公司 | High temperature resistant PET protection film production technology |
Non-Patent Citations (2)
| Title |
|---|
| 岳德茂: "《印刷科技实用手册》", 印刷工业出版社, pages: 99 - 100 * |
| 岳德茂: "《现代包装材料加工与应用研究》", 31 May 2018, 中国商业出版社, pages: 91 - 100 * |
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