B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/934
B29C 33/48 (2006.01) B29C 53/82 (2006.01) F16L 9/16 (2006.01)
Patent
CA 1130526
ABSTRACT A mold for the production of a reinforced plastic tubular body having an annular groove such as a pipe coupling, said mold comprising a mold body and detachably mounted on a predetermined position thereof, an annular groove former consisting of a surface layer of an elastic material and a core covered with the surface layer. The reinforced plastic tubular body is produced by forming a layer of a molding material around the aforesaid mold, curing the layer of molding material, separating the mold body from the cured layer of molding material, and then separating the annular groove former from the cured layer of molding material by removing the core and the surface layer in this sequence.
330806
Fujiwara Sigeharu
Mayumi Masakatu
Mitooka Kenji
Okuyama Takesi
Sekisui Kagaku Kogyo Kabushiki Kaisha
Smart & Biggar
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