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Patent Searching and Data


Title:
MANUFACTURE OF FLUOROCARBON PREPREG
Document Type and Number:
Japanese Patent JPH04179510
Kind Code:
A
Abstract:

PURPOSE: To increase a quantity of resin adherence per one coating process, and enable temperature control to be performed at which coated film cracks are likely to be reduced by repeatedly effecting a process wherein an impregnated fiber base material is passed through a heating furnace set at a temperature of the melting point or lower of fluorocarbon resin, and then passing the impregnated fiber base material through a heating furnace set at a temperature of the melting point or higher of the fluorocarbon resin.

CONSTITUTION: The same fluorocarbon resin dispersion is put unto either of two baths 4. A drying furnace 3 is divided into two areas such as low temperature area and a middle temperature area, and the temperature setting of the low temperature area is made into 50-120°C and the temperature setting of the middle temperature is made into 150-220°C. A baking furnace 2 is controlled into a temperature of 280-380°C. After a glass cloth 1 is immersed into the first bath 4, it is passed through a drying furnace 3 without using of a hackling rod, and after soaked into the second bath 4, excess resin is scratched off by a doctor bar, following this, it is passed through the drying furnace 3 and baking furnace 2 and then wound up on around a winding part 7. By repeating this coating process twice, fluorocarbon resin prepreg is obtained, wherein there is no coated film cracks thereon and the resin content is 70wt.%.


Inventors:
IWATA TERUHIKO
INOUE MITSUHIRO
ONOSE KATSUHIRO
TSUMURA KOHEI
NEGISHI HARUMI
Application Number:
JP1990000308327
Publication Date:
June 26, 1992
Filing Date:
November 14, 1990
Export Citation:
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Assignee:
HITACHI CHEMICAL CO LTD
International Classes:
B29B11/16; B29B15/08; B32B15/08; B32B15/082; B29K27/12; B29K105/08; H05K1/03; H05K3/02; (IPC1-7): B29B11/16; B29B15/08; B29K27/12; B29K105/08