Document Type and Number:
Japanese Patent JPH0242340
Kind Code:
B2
Abstract:
A method of bonding plastic pipes, which comprises heat-melting the outer circumferential surface of an end portion of a plastic pipe and the inner circumferential surface of a socket protion of a plastic joint, and inserting the end portion of the plastic pipe into the socket portion of the plastic joint to thereby bond the two; wherein the inner circumferential surface of the socket portion of the plastic joint is tapered so that the socket portion becomes progressively smaller in diameter in a direction away from its end portion, or the outer circumferential surface of the end portion of the plastic pipe tapered so that the end portion becomes progressively is smaller in diameter toward its insertion end, and wherein when the end portion of the plastic pipe is to be heated, the length from its insertion end of a part to be heated is made nearly equal to the final insertion length of the pipe and when the socket portion of the plastic joint is to be heated, the length from the socket end of a part to be heated is made shorter than the final insertion length of the pipe by a predetermined distance.
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Application Number:
JP28055084A
Publication Date:
September 21, 1990
Filing Date:
December 26, 1984
Export Citation:
International Classes:
B29C57/00; B29C65/02; B29C65/20; F16L47/02; B29K27/06; B29L23/00