CN109664563A - Liquid crystal polymer film and manufacturing method - Google Patents
Liquid crystal polymer film and manufacturing method Download PDFInfo
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- CN109664563A CN109664563A CN201811343548.0A CN201811343548A CN109664563A CN 109664563 A CN109664563 A CN 109664563A CN 201811343548 A CN201811343548 A CN 201811343548A CN 109664563 A CN109664563 A CN 109664563A
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- Prior art keywords
- film
- liquid crystal
- crystal polymer
- orientation
- polymer film
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/08—PCBs, i.e. printed circuit boards
Abstract
The invention discloses a kind of liquid crystal polymer film and manufacturing methods, liquid crystal polymer film includes the first orientation film and second orientation film of successively intersecting setting, the adjacent first orientation film intersects with the differently- oriented directivity of the second orientation film, and the first orientation film and second orientation film obtain the liquid crystal polymer film through hot press molding.Liquid crystal polymer film has comparable mechanical property on the direction MD and the direction TD, is suitable for production flexible circuit board；The manufacturing method of the liquid crystal polymer film is simple, and low manufacture cost is easy to mass production.
Description
Technical field
The present invention relates to materials processing technology field more particularly to a kind of liquid crystal polymer film and manufacturing methods.
Background technique
Liquid crystal polymer (Liquid Crystalline Polymer, LCP) is to grow up phase early 1980s
A kind of novel high polymer material.Since (1~40GHz) has lower dielectric constant and dielectric loss, liquid crystal in high frequency
Thin polymer film is widely applied in high-frequency high-speed communication flexible circuit board.
The main preparation methods of liquid crystal polymer film, which have extrusion blow molding processes and squeeze out, is cast double daraf(reciprocals of farad).Application No. is
03156468.2 Chinese invention patent discloses a kind of production method of inflation film, and the inflation film of production has smooth
Surface not will form gap and/or fold.Application No. is 200410080693.6 Chinese invention patents to disclose a kind of thermoplastic
The manufacturing method of property liquid crystal polymer film, can manufacture at low temperature for flexibility circuit substrate or Mulitilayer circuit board etc.
Insulating materials, the liquid crystal polymer films that control thermal expansion coefficient.
But since liquid crystal polymer has height-oriented property under shearing force, using the thin of conventional method preparation
Film mechanical property with higher on the direction MD (Machine Direction, mechanical direction), and in the direction TD
Tensile strength on (Transverse Direction, perpendicular to mechanical direction) is very poor, that is, has anisotropy, anisotropy
Liquid crystal film be unable to satisfy the use demand of flexible circuit board.
Summary of the invention
The technical problems to be solved by the present invention are: a kind of liquid crystal polymer film and manufacturing method are provided, in the direction MD
There is comparable mechanical property on the upper and direction TD.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of liquid crystal polymer film, first orientation film and second orientation film including the setting of successively intersecting,
The adjacent first orientation film intersects with the differently- oriented directivity of the second orientation film, and the first orientation film and
Two oriented films obtain the liquid crystal polymer film through hot press molding.
Another technical solution that the present invention uses are as follows:
A kind of manufacturing method of liquid crystal polymer film, by be used to manufacture liquid crystal polymer film first orientation film and
Successively intersecting is arranged second orientation film, makes the orientation of adjacent the first orientation film and the second orientation film
Direction intersection, obtains stepped construction；Stepped construction progress is hot-forming, obtain the liquid crystal polymer film.
The beneficial effects of the present invention are: by the first orientation film in different orientation direction and second orientation film cross-bedding
Folded setting, and liquid crystal polymer film is hot-forming, and liquid crystal polymer film can be made to have phase on the direction MD and the direction TD
When mechanical property, be suitable for production flexible circuit board.The manufacturing method of the liquid crystal polymer film is simple, cost of manufacture
It is low, it is easy to mass production.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the liquid crystal polymer film of the embodiment of the present invention one.
Label declaration:
1, first orientation film；2, second orientation film.
Specific embodiment
To explain the technical content, the achieved purpose and the effect of the present invention in detail, below in conjunction with embodiment and cooperate attached
Figure is explained.
The most critical design of the present invention is: successively by the first orientation film in different orientation direction and second orientation film
Intersecting setting, can make liquid crystal polymer film have comparable mechanical property on the direction MD and the direction TD.
Fig. 1, a kind of liquid crystal polymer film are please referred to, the first orientation film 1 and second including intersecting setting takes
To film 2, the adjacent first orientation film 1 intersects with the differently- oriented directivity of the second orientation film 2, and described first takes
The liquid crystal polymer film is obtained through hot press molding to film 1 and second orientation film 2.
As can be seen from the above description, the beneficial effects of the present invention are: by the first orientation film in different orientation direction and
The setting of two oriented film intersectings, and liquid crystal polymer film is hot-forming, and liquid crystal polymer film can be made in the direction MD
With on the direction TD have comparable mechanical property, be suitable for production flexible circuit board.
Further, the thickness of the first orientation film 1 and second orientation film 2 is 5~100 μm.
Further, the number of plies of the first orientation film 1 and second orientation film 2 is 1~5 layer.
Seen from the above description, the thickness and the number of plies of first orientation film and second orientation film can according to need into
Row setting.
Further, the differently- oriented directivity of adjacent the first orientation film 1 and the second orientation film 2 is mutually perpendicular to
Setting.
Seen from the above description, the differently- oriented directivity of the oriented film of adjacent two layers is set as being mutually perpendicular to, is conducive to make
Liquid crystal polymer film has isotropism.
Further, the material of the liquid crystal polymer film is poly- for the liquid crystal polymer containing phenyl ring, naphthalene-ring containing liquid crystal
Close object, the liquid crystal polymer of fatty race's segment or the liquid crystal polymer of the group containing cyclic polyester.
Seen from the above description, the material of liquid crystal polymer film, which can according to need, is selected.
Another technical solution of the present invention are as follows:
A kind of manufacturing method of liquid crystal polymer film, by be used to manufacture liquid crystal polymer film first orientation film and
Successively intersecting is arranged second orientation film, makes the orientation of adjacent the first orientation film and the second orientation film
Direction intersection, obtains stepped construction；Stepped construction progress is hot-forming, obtain the liquid crystal polymer film.
Seen from the above description, the manufacturing method of the liquid crystal polymer film is simple, and low manufacture cost is easy to mass
Production.
Further, the hot-forming temperature is Ts~Tm, wherein Ts is that the dimension card of first orientation film softens
Point, Tm are the fusing point of first orientation film.
Further, the hot-forming temperature is (Ts+15 DEG C)~(Tm-5 DEG C).
Seen from the above description, hot-forming temperature is unsuitable excessively high or too low, excessively high to destroy each layer oriented film
Original orientation, it is too low, it is unfavorable for adjacent two layers oriented film and fits together.
Further, the hot-forming pressure is 2~20MPa.
Further, the differently- oriented directivity of adjacent the first orientation film and the second orientation film is mutually perpendicular to set
It sets.
Please refer to Fig. 1, the embodiment of the present invention one are as follows:
A kind of liquid crystal polymer film, first orientation film 1 and second orientation film including the setting of successively intersecting
2, the differently- oriented directivity of the first orientation film 1 of adjacent two layers intersects with the differently- oriented directivity of the second orientation film 2, and institute
It states first orientation film 1 and second orientation film 2 obtains the liquid crystal polymer film through hot press molding.In 1 in figure, first is taken
It is parallel with the direction that two arrows indicate respectively to the differently- oriented directivity of film 1 and second orientation film 2.It is described in the present embodiment
The thickness of first orientation film 1 and second orientation film 2 is 5~100 μm, and the first orientation film 1 and second orientation are thin
The number of plies of film 2 is 1~5 layer, and the number of plies of finally obtained liquid crystal polymer film is 2~10 layers.Preferably, adjacent two layers
The differently- oriented directivity of the first orientation film 1 and the differently- oriented directivity of the second orientation film 2 are arranged in a mutually vertical manner.The present embodiment
In, the material of the liquid crystal polymer film is liquid crystal polymer, naphthalene-ring containing liquid crystal polymer, fatty race's chain containing phenyl ring
The liquid crystal polymer of section or the liquid crystal polymer of the group containing cyclic polyester.
The embodiment of the present invention two are as follows:
A kind of manufacturing method of liquid crystal polymer film obtains the liquid crystal polymer film in embodiment one for manufacturing,
Mainly include the following steps:
The first orientation film of 5~100 μ m-thicks is prepared using extrusion blow molding processes, the extrusion techniques such as the tape casting or extrusion calendaring
With second orientation film, first orientation film and second orientation film can be using with a collection of films, and only placement direction is different
Cause final differently- oriented directivity different.
By the first orientation film for being used to manufacture liquid crystal polymer film and second orientation film, successively intersecting is arranged,
Intersect the differently- oriented directivity of the adjacent first orientation film with the differently- oriented directivity of the second orientation film, obtains stacking knot
Structure.Preferably, the differently- oriented directivity and the differently- oriented directivity phase of the second orientation film of the first orientation film of adjacent two layers
Mutually it is vertically arranged.In the present embodiment, stepped construction can be stacked in layer, can also using single-orientated film into
Row folding, so that the differently- oriented directivity of adjacent two layers is different, folding is suitble to roll-to-roll process production.
Stepped construction progress is hot-forming, obtain the liquid crystal polymer film.The hot-forming temperature
For Ts~Tm, wherein Ts is the Vicat softening point of first orientation film, and Tm is the fusing point of first orientation film, it is preferred that described
Hot-forming temperature is (Ts+15 DEG C)~(Tm-5 DEG C).In the present embodiment, the hot-forming pressure is 2~20MPa,
It can be pressed in atmospheric conditions or under vacuum condition, the liquid crystal polymer that vacuum condition is more advantageous to obtain densification is thin
Film.
The embodiment of the present invention three are as follows:
A kind of manufacturing method of liquid crystal polymer film, with embodiment two the difference is that:
Using extrusion blow molding machine, thermoplastic liquid crystal polymer resin (VECTRA A950) is blow molded at 310 DEG C
Film.Extruder screw revolving speed is 80rpm, and extrusion die diameter is 60mm, and gap 0.8mm, blow-up ratio 1:4 obtain thickness
About 50 μm of first orientation film and second orientation film.
By first orientation film and second orientation film according to the crisscross carry out lamination of MD, TD, lamination number is 2 layers, so
It is pressed under laminating machine afterwards, pressing-in temp is 240 DEG C, pressure 10MPa, and it is thin to obtain 100 μm of thickness of liquid crystal polymer
Film.
The embodiment of the present invention four are as follows:
A kind of manufacturing method of liquid crystal polymer film, with embodiment two the difference is that:
Using extrusion blow molding machine, thermoplastic liquid crystal polymer resin (VECTRA A950) is blow molded at 310 DEG C
Film.Extruder screw speed is 80rpm, and extrusion die diameter is 40mm, and gap 0.6mm, blow-up ratio 1:4 obtain thickness
About 25 μm of first orientation film and second orientation film.
By first orientation film and second orientation film according to the crisscross carry out lamination of MD, TD, lamination number is 4 layers,
It is pressed under laminating machine, pressing-in temp is 240 DEG C, pressure 10MPa, obtains 100 μm of thickness of liquid crystal polymer film.
The embodiment of the present invention five are as follows:
A kind of manufacturing method of liquid crystal polymer film, with embodiment two the difference is that:
Using extrusion blow molding machine, thermoplastic liquid crystal polymer resin (VECTRA A950) is blow molded at 310 DEG C
Film.Extruder screw speed is 80rpm, and extrusion die diameter is 120mm, and gap 1.5mm, blow-up ratio 1:4 obtain thickness
About 100 μm of first orientation film and second orientation film.
By first orientation film and second orientation film according to the crisscross carry out lamination of MD, TD, lamination number is 2 layers,
It is pressed under laminating machine, pressing-in temp is 240 DEG C, pressure 2MPa, obtains the liquid crystal polymer film that thickness is about 200 μm.
The embodiment of the present invention six are as follows:
A kind of manufacturing method of liquid crystal polymer film, with embodiment two the difference is that:
Using extrusion blow molding machine, thermoplastic liquid crystal polymer resin (VECTRAA950) is blow molded at 310 DEG C
Film.Extruder screw speed is 80rpm, and extrusion die diameter is 30mm, and gap 0.2mm, blow-up ratio 1:4 obtain thickness
About 5 μm of first orientation film and second orientation film.
By first orientation film and second orientation film according to the crisscross carry out lamination of MD, TD, lamination number is 10 layers,
It is pressed under laminating machine, pressing-in temp is 240 DEG C, pressure 20MPa, obtains the liquid crystal polymer film that thickness is about 50 μm.
Comparative example
Using extrusion blow molding machine, thermoplastic liquid crystal polymer resin (VECTRA A950) is blow molded at 310 DEG C
Film.Extruder screw revolving speed is 80rpm, and extrusion die diameter is 40mm, and gap 1.2mm, blow-up ratio 1:2.5 obtain thickness
The oriented film of about 100 μm of degree.
Performance test
By the liquid crystal polymer film that three~embodiment of embodiment six obtains and the oriented film that comparative example obtains
The test of tensile strength is carried out, test result is as shown in table 1.
1 tensile strength test result of table
As shown in Table 1, isotropism, the mechanical property on the direction MD and the direction TD is presented in liquid crystal polymer film of the invention
It can be quite.
In conclusion a kind of liquid crystal polymer film provided by the invention and manufacturing method, liquid crystal polymer film is in MD
There is comparable mechanical property on direction and the direction TD, be suitable for production flexible circuit board；The system of the liquid crystal polymer film
It is simple to make method, low manufacture cost is easy to mass production.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalents made by bright specification and accompanying drawing content are applied directly or indirectly in relevant technical field, similarly include
In scope of patent protection of the invention.
Claims (10)
1. a kind of liquid crystal polymer film, which is characterized in that the first orientation film and second including the setting of successively intersecting
Oriented film, the adjacent first orientation film intersects with the differently- oriented directivity of second orientation film, and the first orientation is thin
Film and second orientation film obtain the liquid crystal polymer film through hot press molding.
2. liquid crystal polymer film according to claim 1, which is characterized in that the first orientation film and second orientation
The thickness of film is 5~100 μm.
3. liquid crystal polymer film according to claim 1, which is characterized in that the first orientation film and second orientation
The number of plies of film is 1~5 layer.
4. liquid crystal polymer film according to claim 1, which is characterized in that the adjacent first orientation film and institute
The differently- oriented directivity for stating second orientation film is arranged in a mutually vertical manner.
5. liquid crystal polymer film according to claim 1, which is characterized in that the material of the liquid crystal polymer film is
The liquid crystal polymer of liquid crystal polymer, naphthalene-ring containing liquid crystal polymer, fatty race's segment containing phenyl ring or base containing cyclic polyester
The liquid crystal polymer of group.
6. a kind of manufacturing method of liquid crystal polymer film, which is characterized in that will be used to manufacture the first of liquid crystal polymer film
Successively intersecting is arranged for oriented film and second orientation film, makes the adjacent first orientation film and the second orientation
The differently- oriented directivity of film intersects, and obtains stepped construction；Stepped construction progress is hot-forming, obtain the liquid crystal polymer
Film.
7. the manufacturing method of liquid crystal polymer film according to claim 6, which is characterized in that the hot-forming temperature
Degree is Ts~Tm, wherein Ts is the Vicat softening point of first orientation film, and Tm is the fusing point of first orientation film.
8. liquid crystal polymer film according to claim 7, which is characterized in that the hot-forming temperature is (Ts+15
DEG C)~(Tm-5 DEG C).
9. the manufacturing method of liquid crystal polymer film according to claim 6, which is characterized in that the hot-forming pressure
Power is 2~20MPa.
10. the manufacturing method of liquid crystal polymer film according to claim 6, which is characterized in that adjacent described first
The differently- oriented directivity of oriented film and the second orientation film is arranged in a mutually vertical manner.
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| CN201811343548.0A CN109664563A (en) | 2018-11-13 | 2018-11-13 | Liquid crystal polymer film and manufacturing method |
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| CN201811343548.0A CN109664563A (en) | 2018-11-13 | 2018-11-13 | Liquid crystal polymer film and manufacturing method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5571583A (en) * | 1995-04-26 | 1996-11-05 | Becton, Dickinson And Company | Injection spin molding process and articles made therewith |
| CN1176619A (en) * | 1994-06-27 | 1998-03-18 | 美孚石油公司 | Cross-laminated multilayer film structures for use in the production of bank notes or the like |
| US6027771A (en) * | 1993-02-25 | 2000-02-22 | Moriya; Akira | Liquid crystal polymer film and a method for manufacturing the same |
| CN100349734C (en) * | 2001-10-24 | 2007-11-21 | 杜邦三井氟化物有限公司 | Fluoropolymer laminates and a process for manufacture thereof |
| CN101846853A (en) * | 2009-03-27 | 2010-09-29 | 北京京东方光电科技有限公司 | Substrate for liquid crystal display |
| CN102224451A (en) * | 2008-11-27 | 2011-10-19 | 夏普株式会社 | Orientation film, liquid crystal display having orientation film, and method for forming orientation film |
| CN103412441A (en) * | 2013-08-07 | 2013-11-27 | 京东方科技集团股份有限公司 | Array substrate, color-filter substrate, display device and manufacturing method of orientation layers |
-
2018
- 2018-11-13 CN CN201811343548.0A patent/CN109664563A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6027771A (en) * | 1993-02-25 | 2000-02-22 | Moriya; Akira | Liquid crystal polymer film and a method for manufacturing the same |
| CN1176619A (en) * | 1994-06-27 | 1998-03-18 | 美孚石油公司 | Cross-laminated multilayer film structures for use in the production of bank notes or the like |
| US5571583A (en) * | 1995-04-26 | 1996-11-05 | Becton, Dickinson And Company | Injection spin molding process and articles made therewith |
| CN100349734C (en) * | 2001-10-24 | 2007-11-21 | 杜邦三井氟化物有限公司 | Fluoropolymer laminates and a process for manufacture thereof |
| CN102224451A (en) * | 2008-11-27 | 2011-10-19 | 夏普株式会社 | Orientation film, liquid crystal display having orientation film, and method for forming orientation film |
| CN101846853A (en) * | 2009-03-27 | 2010-09-29 | 北京京东方光电科技有限公司 | Substrate for liquid crystal display |
| CN103412441A (en) * | 2013-08-07 | 2013-11-27 | 京东方科技集团股份有限公司 | Array substrate, color-filter substrate, display device and manufacturing method of orientation layers |
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