Daikin Industries, Ltd.

Shigeru Ichiba

Tetsuya Higuchi

Mikio Morita

Takuo Kawamura

Masaomi Goromaru

Hiroshi Yamaguchi

Shunichi Nomura

Kazuhiro Takeda

Kazuhisa Fujita

Akira Watanabe

Yasuyuki Moriyama

Tomizo Sota

Yutaka Nakata

Kazuhiko Shimada

Tomizo Soda

An excellent low temperature heat sealing property is imparted to a surface of a non-perfluoro fluorine-containing resin molded article having F/C of not more than 1.8. A non-perfluoro fluorine-containing resin molded article having a surface layer portion having a low temperature heat sealing property on at least a part of the surface layer thereof; said surface layer portion having a low temperature heat-sealing property has a ratio F/C of the number of fluorine atoms to the number of carbon atoms of 0.2&lE;F/C&lE;0.9 and a ratio O/C of the number of oxygen atoms to the number of carbon atoms of 0.09&lE;O/C&lE;0.40, and a remaining portion of the surface layer has a ratio F/C of the number of fluorine atoms to the number of carbon atoms which is larger than that of the surface layer portion having a low temperature heat-sealing property and is 0.8&lE;F/C&lE;1.8.

Non-perfluoro fluorine-containing resin molded article having low-temperature heat-sealing property

A process for continuously preparing a wet powder of PTFE, comprising the step of continuously slurrying a PTFE aqueous dispersion with a high shear machine having a rotating element, and the step of continuously granulating the slurry by using vertical agitator. The process can be carried out for a long time without trouble, and can continuously provide a dry powder having good powder properties. The powder properties can be controlled by regulating operation conditions.

Continuous process for preparing polytetrafluoroethylene wet powder

Method for emulsion polymerization of tetrafluoroethylene and method for

A process for continuously preparing a wet powder of PTFE, comprising the step of continuously slurrying a PTFE aqueous dispersion with a high shear machine, and the step of continuously granulating the slurry by using vertical agitator. The process can be carried out for a long time without trouble, and can continuously provide a dry powder having good powder properties. The powder properties can be controlled by regulating operation conditions.

Continunous process for preparing polytetrafluoroethlene wet powder

Method of measuring concentration of polymerization inhibitor contained

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Osaka, Japan

Shigeru Ichiba