CN203726941U - Release barrier film - Google Patents
Release barrier film Download PDFInfo
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- CN203726941U CN203726941U CN201420067509.3U CN201420067509U CN203726941U CN 203726941 U CN203726941 U CN 203726941U CN 201420067509 U CN201420067509 U CN 201420067509U CN 203726941 U CN203726941 U CN 203726941U
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- pbt
- alloy
- release
- barrier film
- thickness
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Abstract
The utility model discloses a release barrier film. The release barrier film comprises an upper PBT/PP (polybutylene terephthalate/propene polymer) alloy layer, a middle thermoplastic layer and a lower PBT/PP alloy layer which are arranged sequentially from top to bottom. The release barrier film comprises the upper PBT/PP alloy layer, the middle thermoplastic layer and the lower PBT/PP alloy layer which are arranged from top to bottom, the heat-resistant temperature of a PBT/PP alloy can reach 220 DEG C, the use requirement of an FPC (flexible printed circuit) under a high temperature can be met, melting point of the middle thermoplastic layer is low, the inner-layer material flow under the high temperature of 190 DEG C is realized, and the barrier effect is excellent; and the production cost of the release barrier film is reduced.
Description
Technical field
The utility model relates to the Obstruct membrane using in flexible PCB production process, specifically a kind of release Obstruct membrane.
Background technology
Flexible PCB is to take polyimides or polyester film a kind ofly to have height reliability, an excellent flexible printed circuit as what base material was made.Flexible PCB is called for short soft board or FPC, has that distribution density is high, lightweight, the feature of thin thickness.Flexible PCB is mainly used a lot of products at mobile phone, notebook computer, PDA, digital camera, LCM etc.At present, the release Obstruct membrane using in FPC production process, is mainly TPX mould release membrance, and it not only will meet the instructions for use under the above high temperature of 190 degree in FPC production process, also will meet the resistance glue effect requiring in FPC production.And the material of release resistance glue new film of the present utility model replaces TPX mould release membrance, also met the requirement of the rationality Obstruct membrane using in FPC production process simultaneously.A kind of material that TPX material Shi You Mitsui company produces, it is expensive and buy and receive all restrictions.
Utility model content
The purpose of this utility model is to provide a kind of release Obstruct membrane.
The purpose of this utility model can be achieved through the following technical solutions:
A release Obstruct membrane, is characterized in that, this release Obstruct membrane comprises PBT/PP alloy upper strata, thermoplastic intermediate layer and the PBT/PP alloy lower floor setting gradually from top to bottom.
Described PBT/PP alloy upper thickness is 20-40 μ m, and described thermoplastic intermediate layer thickness is 40-80 μ m, and described PBT/PP alloy lower thickness is 20-40 μ m.
Described PBT/PP alloy upper thickness is 30 μ m, and described thermoplastic intermediate layer thickness is 60 μ m, and described PBT/PP alloy lower thickness is 30 μ m.
Described thermoplastic is low density polyethylene (LDPE).
The beneficial effects of the utility model: the release Obstruct membrane of the utility model is comprised of PBT/PP alloy upper strata, thermoplastic intermediate layer and PBT/PP alloy lower floor from top to bottom, PBT/PP alloy heat resisting temperature can reach 220 ℃, can expire the requirement of using under FPC high temperature, thermoplastic intermediate layer fusing point is low, meet inner layer material under 190 ℃ of high temperature and flow, barriering effect is excellent; The utility model production cost reduces.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
In figure: 1, PBT/PP alloy upper strata, 2, thermoplastic intermediate layer, 3, PBT/PP alloy lower floor.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, a kind of release Obstruct membrane, this release Obstruct membrane comprises PBT/PP alloy upper strata, thermoplastic intermediate layer and the PBT/PP alloy lower floor setting gradually from top to bottom.PBT/PP alloy upper thickness is 20-40 μ m, and thermoplastic intermediate layer thickness is 40-80 μ m, and PBT/PP alloy lower thickness is 20-40 μ m.As further preferred, PBT/PP alloy upper thickness is 30 μ m, and thermoplastic intermediate layer thickness is 60 μ m, and PBT/PP alloy lower thickness is 30 μ m.The utility model thermoplastic is low density polyethylene (LDPE).
The utility model PBT selects medium viscosity resin, and PP selects homopolymerization resin, and PBT and PP are made into PBT/PP alloy with the ratio of 100:20-40.
The preparation method of PBT/PP alloy of the present invention comprises the following steps:
(1) by PBT resin dry 3h under 140 ℃ of conditions;
(2) PP resin, GMA grafting PP are mixed, mix, then add in blender and mix together with being dried the PBT resin after processing with step (1), wherein, GMA grafting PP accounts for the 8-10% of PBT resin, PP resin total amount, and GMA grafting PP percent grafting is 8-20%;
(3) raw material step (2) fully being mixed drops into double screw extruder, through double-screw extruding pelletizing machine, extrudes processing, obtains PBT/PP alloy material.
The processing temperature of double-screw extruding pelletizing machine is 200-300 degree, and screw speed is 30-50r/min, and the time of staying is 2-3h.
Claims (4)
1. a release Obstruct membrane, is characterized in that, this release Obstruct membrane comprises PBT/PP alloy upper strata, thermoplastic intermediate layer and the PBT/PP alloy lower floor setting gradually from top to bottom.
2. release Obstruct membrane according to claim 1, is characterized in that, described PBT/PP alloy upper thickness is 20-40 μ m, and described thermoplastic intermediate layer thickness is 40-80 μ m, and described PBT/PP alloy lower thickness is 20-40 μ m.
3. release Obstruct membrane according to claim 2, is characterized in that, described PBT/PP alloy upper thickness is 30 μ m, and described thermoplastic intermediate layer thickness is 60 μ m, and described PBT/PP alloy lower thickness is 30 μ m.
4. release Obstruct membrane according to claim 1, is characterized in that, described thermoplastic is low density polyethylene (LDPE).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420067509.3U CN203726941U (en) | 2014-02-17 | 2014-02-17 | Release barrier film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420067509.3U CN203726941U (en) | 2014-02-17 | 2014-02-17 | Release barrier film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203726941U true CN203726941U (en) | 2014-07-23 |
Family
ID=51197045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420067509.3U Expired - Fee Related CN203726941U (en) | 2014-02-17 | 2014-02-17 | Release barrier film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203726941U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105838046A (en) * | 2016-05-16 | 2016-08-10 | 久裕电子科技（江苏）有限公司 | Three-layer co-extrusion high-temperature-resistant glue blocking release film and production process thereof |
| CN106273959A (en) * | 2016-08-11 | 2017-01-04 | 厦门新旺新材料科技有限公司 | Three layers of resistance glue mould release membrance |
| CN115003753A (en) * | 2020-01-21 | 2022-09-02 | 巴斯夫欧洲公司 | PBT-based composition |
-
2014
- 2014-02-17 CN CN201420067509.3U patent/CN203726941U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105838046A (en) * | 2016-05-16 | 2016-08-10 | 久裕电子科技（江苏）有限公司 | Three-layer co-extrusion high-temperature-resistant glue blocking release film and production process thereof |
| CN106273959A (en) * | 2016-08-11 | 2017-01-04 | 厦门新旺新材料科技有限公司 | Three layers of resistance glue mould release membrance |
| CN115003753A (en) * | 2020-01-21 | 2022-09-02 | 巴斯夫欧洲公司 | PBT-based composition |
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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: 20140723 Termination date: 20150217 |
|
| EXPY | Termination of patent right or utility model |