摘要:
To provide a laminated sheet which has high transparency and withstands long outdoor use, comprising a glass fiber cloth which is free from deformation of the cloth even in a step of bonding the cloth to a fluororesin film. A laminated sheet comprising a woven or nonwoven fabric comprising glass fibers fixed by a binder, and a fluororesin film laminated on each other, wherein the binder contains a copolymer (A) having repeating units (a1) based on at least one fluoromonomer selected from the group consisting of tetrafluoroethylene, chlorotrifluoroethylene and hexafluoropropylene, and repeating units (a2) based on at least one non-fluoromonomer selected from the group consisting of a vinyl ether, a vinyl ester, an isopropenyl ether, an isopropenyl ester, an allyl ether and an allyl ester.
摘要:
To provide an ethylene/tetrafluoroethylene copolymer sheet excellent in the mechanical strength and the outer appearance, continuously produced by extrusion, and a process for producing it. An ethylene/tetrafluoroethylene copolymer sheet obtained by extrusion, which is characterized by having Ro/d (wherein Ro is an in-plane phase difference [unit: nm], and d is a thickness [unit: nm]) of at most 3.0×10 -3 , and a thickness of more than 300 µm, and a process for producing it.
摘要:
Provided is a release film for producing a light emitting diode having desired concaves and convexes accurately transferred directly to the surface of a resin-sealed portion, at a low cost and in high yield, and a process for producing a light emitting diode. A release film 10 having a plurality of convex portions (convex stripes 12) and/or concave portions (grooves 14) formed on the surface is used as a release film to be placed in a cavity of a mold for forming a resin-sealed portion to seal a light emitting element of a light emitting diode.
摘要:
To provide a release film which has an extremely low gas permeability, an enormously small mold contamination by a mold resin and a high releasability. A gas barrier release film for semiconductor resin molds, comprising a release layer (I) having excellent releasability, a plastic support layer (II) supporting the release layer, and a gas restraint layer (III) made of a metal or a metal oxide, formed between the release layer and the support layer, and having a xylene gas permeability of at most 10 -15 (kmol m/(s·m 2 ·kPa)) at 170°C. The release layer (I) is preferably formed from a fluororesin such as an ethylene/tetrafluoroethylene copolymer, and a metal oxide layer is preferably a layer of an oxide such as an aluminum oxide, a silicon oxide or a magnesium oxide.
摘要翻译:为了提供一种具有极低气体渗透性的脱模膜,模具树脂具有极小的模具污染和高脱模性。 一种用于半导体树脂模具的阻气性隔离膜,包括具有优异的剥离性的剥离层(I),支撑脱模层的塑料支撑层(II)和由金属或金属氧化物制成的气体限制层(III) 形成在释放层和支撑层之间,并且在170℃下二甲苯气体渗透率为至多10 -15(kmol / m s(s·m 2·kPa))。 脱模层(I)优选由氟树脂如乙烯/四氟乙烯共聚物形成,金属氧化物层优选为氧化铝,氧化硅或氧化镁等氧化物层。
摘要:
To provide a laminate which has a heat sealing property, a barrier property and mechanical strength, of which elution of impurities from the surface to be in contact with a chemical solution is suppressed, and of which peeling and the like hardly occur at the sealed portion of a bag and at the interfaces between the layers of the laminate when exposed to high temperature, a bag using it and a lithium ion battery. A laminate 10 comprising a first layer 12 containing a fluororesin, a second layer 14 containing a barrier material, a third layer 16 containing a fluororesin and a fourth layer 18 containing a polyamide in this order, wherein each of the fluororesin in the first layer 12 and the fluororesin in the third layer 16 is a fluororesin having a melting point of from 160 to 230°C and having adhesive functional groups.
摘要:
To provide a laminated sheet which has high transparency and withstands long outdoor use, comprising a glass fiber cloth which is free from deformation of the cloth even in a step of bonding the cloth to a fluororesin film. A laminated sheet comprising a woven or nonwoven fabric comprising glass fibers fixed by a binder, and a fluororesin film laminated on each other, wherein the binder contains a copolymer (A) having repeating units (a1) based on at least one fluoromonomer selected from the group consisting of tetrafluoroethylene, chlorotrifluoroethylene and hexafluoropropylene, and repeating units (a2) based on at least one non-fluoromonomer selected from the group consisting of a vinyl ether, a vinyl ester, an isopropenyl ether, an isopropenyl ester, an allyl ether and an allyl ester.
摘要:
To provide a method for producing a fluororesin film, whereby defects due to deterioration (such as fish-eyes due to gelation) of a melt-processable fluororesin are less likely to occur during the production. A method for producing a fluororesin film, which comprises extruding a fluororesin material containing a melt-processable fluororesin through an extruder die, wherein the temperature of the extruder die is from 305 to 355°C, and the average flow velocity V 0.95 of the fluororesin material as obtained by V 0.95 = Q 0.95 /A 0.95 , is at least 1×10 -4 m/sec. Here, when the distance from the flow inlet 22 of the extruder die to the end of the manifold 24 of the extruder die is set to be x=1, Q 0.95 is the flow rate (m 3 /sec) of the fluororesin material flowing in the manifold 24 at a position of x=0.95 from the flow inlet 22, and A 0.95 is the cross-sectional area (m 2 ) of the manifold 24 at a position of x=0.95 from the flow inlet 22.
摘要:
A laminate for flexible printed wiring board excellent in signal response in the high-frequency region. The laminate has a three-layer structure where a reinforcing layer (A), an electrical insulative layer (B), and a conductive layer (C) built up in order of mention. The electric insulative layer (B) is made of a fluorine-containing copolymer containing a repetition unit (a) based on tetrafluoroethylene and/or chrolotrifluoroethylene, a repetition unit (b) based in a fluorine monomer (excluding tetrafluoreoethylene and chrolotrifluoroethylene), and a repetition unit (c) based on a monomer having an acid anhydroxide residue and polymerizable unsaturated bond. The roughness of the surface of the conductive layer (C) in contact with the electric insulative layer (B) is 10 μm or less. The laminate is excellent in signal response in the high-frequency region and flexion resistance.
摘要:
To provide a laminate for a flexible printed wiring board excellent in signal response in the high frequency region. A laminate for a flexible printed wiring board having a three-layer laminated structure where a reinforcing layer (A), an electrical insulator layer (B) and an electrical conductor layer (C) are laminated in this order, wherein the electrical insulator layer (B) is made of a fluorocopolymer comprising repeating units (a) based on tetrafluoroethylene and/or chlorotrifluoroethylene, repeating units (b) based on a fluoromonomer excluding tetrafluoroethylene and chlorotrifluoroethylene, and repeating units (c) based on a monomer having an acid anhydride residue and the electrical conductor layer (C) has a surface roughness of at most 10 µm on the side being in contact with the electrical insulator layer (B). The laminate for a flexible printed wiring board is excellent in signal response in the high frequency region and excellent in flex resistance.