Plastic and nonmetallic article shaping or treating: processes – Utilizing heat releasable stress to reshape solid workpiece
Patent
1998-09-09
2000-11-14
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Utilizing heat releasable stress to reshape solid workpiece
264235, 264237, 264322, 264327, 264346, 264348, 264481, 264519, 264DIG65, 425384, 425393, 432 18, B29C 6102, B29C 6108, B29C 3502, B29C 3510, B29C 3516
Patent
active
061465720
ABSTRACT:
A method for forming a socket on a pipe of biaxially oriented polyvinyl chloride including: placing a support in an end section of the pipe, heating the pipe in the region of the end section; deforming the pipe to produce a socket in the region of the heated end section, the heated end section being supported internally while the socket is being formed; cooling the pipe in the region of the end section, the end section being supported internally during the cooling operation; and removing the support from the pipe. For the purpose of heating the internally supported end section of the pipe, the end section is first heated until the end section has reached, substantially homogeneously, the glass transition temperature of polyvinyl chloride and is then further heated until the end section has reached, substantially homogeneously, a temperature near, preferably just above, the orientation temperature of polyvinyl chloride.
REFERENCES:
patent: 3557278 (1971-01-01), Kuhlemann
patent: 3806301 (1974-04-01), Osterhagen et al.
patent: 4094949 (1978-06-01), Yokokawa et al.
patent: 4150087 (1979-04-01), De Putter et al.
patent: 4255137 (1981-03-01), Guyer
patent: 4276010 (1981-06-01), Shartzer
patent: 4847094 (1989-07-01), Parmann
patent: 5928451 (1999-07-01), Johnasson et al.
International Type Search Report, EPO, Dated Nov. 8, 1996, ISA No. 27289 NL, Patent Application No. 1002604, Country--The Netherlands (NL), Filed Mar. 13, 1996; and Translation thereof.
International Search Report, EPO, Dated Jun. 3, 1997, PCT International Application No. PCT/NL97/00117, Filed Mar. 10, 1997.
Poe Michael I.
Silbaugh Jan H.
Wavin B.V.
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