Patent ID: 6238610
Filing Date: 2001-05-29
Classification: B29C,F28F

Abstract:
A method of producing a tank for a heat exchanger, comprising the steps of:forming an annular groove of a rectangular cross-section in an open end surface of an annular skirt portion formed at an open end of the tank over an entire periphery thereof;receiving said skirt portion in a space formed by molds so that an outer side surface and an inner side surface of said skirt portion are held by said molds;urging said outer side surface and said inner side surface of said skirt portion toward each other by a projection formed on a surface of one of said molds facing one of said outer side surface and said inner side surface of said skirt portion, said projection being formed on a portion of said one of said molds operative to be opposed to a portion of said one of said outer side surface and said inner side surface of said skirt portion disposed in the vicinity of said open end surface;guiding, by a guide surface (55) formed on said surface of said one of said molds having said projection and extending from a bottom of said projection to a portion of said one of said molds operative to be disposed in lateral registry with a bottom surface of said annular groove, the deformation of said one of said outer side surface and said inner side surface of said skirt portion toward said annular groove; andinjecting a seal resin into said annular groove and a seal-forming space formed in another of said molds opposed to said annular groove.