Process for manufacturing weather strip
AssigneeToyoda Gosei Co., Ltd.
InventorMasanori Aritake
Life of this patent
Estimating the term…
Abstract
A weather strip contains an extruded portion and a molded portion, which is integrally connected to an end portion of the extruded portion. The extruded portion includes a sealing portion formed by extrusion molding from a sponge rubber, soft thermoplastic elastomer or sponge thermoplastic elastomer, and an attachment portion having a separable core member embedded therein and formed by co-extrusion molding from a solid rubber, low foamed rubber or thermoplastic elastomer. The molded portion comprises a sealing portion formed of a soft thermoplastic elastomer or spongy thermoplastic elastomer, and an attachment portion formed of a semi-rigid resin.
Claims13
A weather strip comprising:
- an extruded portion having an end portion
- a molded portion having an end portion which is integrally connected to the end portion of said extruded portion,
- wherein said extruded portion comprises a sealing portion, formed by extrusion molding from a sponge rubber, soft thermoplastic elastomer or sponge thermoplastic elastomer, and an attachment portion, having a core member embedded therein and formed by co-extrusion molding from a solid rubber, low foamed rubber or thermoplastic elastomer, and
- wherein said molded portion comprises a sealing portion formed of a soft thermoplastic elastomer or sponge thermoplastic elastomer and an attachment portion formed of a semi-rigid resin.
A process for manufacturing a weather strip comprising an extruded portion and a molded portion which is integrally connected to an end portion of said extruded portion, comprising the steps of:
- setting the end portion of said extruded portion in a mold cavity, said extruded portion comprising a sealing portion formed by extrusion molding from a sponge rubber, soft thermoplastic elastomer or sponge thermoplastic elastomer and an attachment portion having a core member embedded therein and formed by co-extrusion molding from a solid rubber, low foamed rubber or thermoplastic elastomer;
- injecting a semi-rigid resin material into said cavity to form an attachment portion of said molded portion to integrally connect said attachment portion of said molded portion to said attachment portion of said extruded portion;
- and
- injecting thereafter a soft or sponge thermoplastic elastomer material into said cavity to form a sealing portion of said molded portion to integrally connect said sealing portion of said molded portion to said sealing portion of said extruded portion.
Dependencies are inferred from the claim text.