Car interior member and method for producing the same
AssigneeIdemitsu Petrochemical Co., Ltd.
InventorsMinoru Sugawara, Koki Hirano, Katsuhiko Tada, Tetsuya Nakamura
Life of this patent
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Abstract
Tubular parison of a molten resin to such an extent as to melt undergoes a pre-blow with a blow molding apparatus, whereupon the blown tubular parison is clamped between dies of a blow molding apparatus, and also, is mutually weld together with parts of the inside faces of the tubular parison to form a multiple of isolated hollows in the parison. Gas is fed through a multiple of gas feed nozzles which are provided in the die into the hollow portions. A number of the hollow portions are opened in a second process to form a functional part.
Claims22
A method for producing a car interior member, comprising the steps of:
- forming a tubular parison of a molten resin and pre-blowing the tubular parison to inflate the tubular parison;
- clamping the inflated tubular parison between a pair of dies to form a multiple of isolated hollow portions in the tubular parison by mutually welding together portions of inside surfaces of the tubular parison;
- and
- carrying out a blow molding of the tubular parison by introducing feed gas from a gas feed nozzle provided in the die into each hollow portion to result in a blow molding having a specified configuration.
A car interior member manufactured according to the process of:
- forming a tubular parison of molten resin;
- pre-blow inflating the tubular parison;
- and blow molding the inflated tubular parison so as to form a car interior member with multiple isolated hollow portions, at least one of a multiple of said hollow portions being a functional part having at least one opening.
Dependencies are inferred from the claim text.