摘要:
The present invention provides a CTFE copolymer-containing laminate produced by coextrusion molding of a PFA and/or FEP layer and a CTFE copolymer layer with the thermal degradation of the latter layer being suppressed and the liquid chemical impermeability and gas barrier properties, among others, being improved as well as a method of producing the same. The present invention is a chlorotrifluoroethylene copolymer-containing laminate having a layer (A) comprising a tetrafluoroethylene/perfluoro(vinyl ether) copolymer and/or a tetrafluoroethylene/hexafluoropropylene copolymer and a layer (B) comprising a chlorotrifluoroethylene copolymer, the layer (A) and the layer (B) being formed by coextrusion molding under a condition such that the temperature of a flow path (pa) through which a layer (A)-forming material (a) flows is 300 to 400° C. and the temperature of a flow path (pb) through which a layer (B)-forming material (b) flows is 250 to 350° C. prior to the material (a) and the material (b) coming into contact with each other in a multilayer die.
摘要:
The present invention provides a laminate having an environmental cracking resistance for a fuel and a fuel impermeability and, in addition, higher in productivity. The present invention is a laminate including a chlorotrifluoroethylene copolymer layer (C) and a fluorine-free organic material layer (K), wherein the chlorotrifluoroethylene copolymer has a melt flow rate of 15.0 to 40.0 (g/10 minutes) and contains 15.0 to 25.0 mole percent of chlorotrifluoroethylene units relative to all monomer units.
摘要:
The present invention provides a laminate having an environmental cracking resistance for a fuel and a fuel impermeability and, in addition, higher in productivity. The present invention is a laminate including a chlorotrifluoroethylene copolymer layer (C) and a fluorine-free organic material layer (K), wherein the chlorotrifluoroethylene copolymer has a melt flow rate of 15.0 to 40.0 (g/10 minutes) and contains 15.0 to 25.0 mole percent of chlorotrifluoroethylene units relative to all monomer units.
摘要:
The present invention provides a laminate which is highly impermeable to fuels and has high fuel crack resistance. The present invention is a laminate having:a layer (A) comprising a fluorinated ethylenic polymer; a layer (B) comprising a chlorotrifluoroethylene copolymer; and a layer (C) comprising a fluorine-free organic material (P); the fluorinated ethylenic polymer being different from the chlorotrifluoroethylene copolymer forming the layer (B) in one and the same laminate and the layer (A), the layer (B), and the layer (C) being bonded together in that order.
摘要:
It is an object of the present invention to provide a fluororesin excellent in thin wall forming ability and capable of forming electric wire insulatings having good flame retardancy, thermal stability and electrical characteristics. The present invention relates to a fluororesin which does not cause cone break, when used for insulating a core wire having a diameter of 0.05 to 0.07 mm under the conditions of a resin temperature of 320 to 370° C., a drawdown rate [DDR] of 80 to 120, a draw rate balance [DRB] of 1.0, a wire coating speed of 700 feet/minute and a insulating thickness of 30 to 50 μm.
摘要:
The present invention provides a laminate in which at least one fluororesin is used and which is highly impermeable to fuels. The present invention is a laminate having a layer (A) comprising a fluororesin and a layer (B) comprising a fluorine-free organic material, wherein said laminate has a fuel permeation rate of not higher than 1.5 g/m2/day.
摘要翻译:本发明提供了使用至少一种氟树脂并且对燃料高度不透过的层压体。 本发明是具有含有氟树脂的层(A)和含有无机有机材料的层(B)的层叠体,其中,所述层叠体的燃料透过率为1.5g / m 2以下, / SUP> /天。
摘要:
A fluororesin which does not cause cone break, when used for insulating a core wire having a diameter of 0.05 to 0.07 mm under the conditions of a resin temperature of 320 to 370° C., a drawdown rate [DDR] of 80 to 120, a draw rate balance [DRB] of 1.0, a wire coating speed of 700 feet/minute and an insulating thickness of 30 to 50 μm.
摘要:
A semiconductor device of the invention includes: a substrate having a hollowed hollow section on a top surface; a semiconductor chip mounted in the hollow section of the substrate; and a lid having a substantially plate-shaped top plate section that opposes the substrate and covers the hollow section, and having at least one pair of side wall sections that project from a circumference of the top plate section towards the substrate and that engage with a side surface of the substrate. The substrate and the lid can be accurately positioned.
摘要:
A semiconductor device is designed such that a semiconductor sensor chip having a diaphragm for detecting pressure variations based on the displacement thereof is fixed onto the upper surface of a substrate having a rectangular shape, which is covered with a cover member so as to form a hollow space embracing the semiconductor sensor chip between the substrate and the cover member. Herein, the substrate is sealed with a molded resin such that chip connection leads packaging leads are partially exposed externally of the molded resin; the chip connection leads are electrically connected to the semiconductor sensor chip and are disposed in line along one side of the semiconductor sensor chip; and the packaging leads are positioned opposite the chip connection leads by way of the semiconductor sensor chip. Thus, it is possible to downsize the semiconductor device without substantially changing the size of the semiconductor sensor chip.
摘要:
A semiconductor device is designed such that a semiconductor sensor chip having a diaphragm for detecting pressure variations based on the displacement thereof is fixed onto the upper surface of a substrate having a rectangular shape, which is covered with a cover member so as to form a hollow space embracing the semiconductor sensor chip between the substrate and the cover member. Herein, the substrate is sealed with a molded resin such that chip connection leads packaging leads are partially exposed externally of the molded resin; the chip connection leads are electrically connected to the semiconductor sensor chip and are disposed in line along one side of the semiconductor sensor chip; and the packaging leads are positioned opposite the chip connection leads by way of the semiconductor sensor chip. Thus, it is possible to downsize the semiconductor device without substantially changing the size of the semiconductor sensor chip.