| 摘要 |
PROBLEM TO BE SOLVED: To provide the blow molding method capable of integrating a skin material with the adhesive resin of the outer layer of a parison having at least two layers in a planar state to bond the same thereto. SOLUTION: A molten substrate resin A is allowed to meet with a separately melted adhesive rsin B in a crosshead die 2 to allow a softened parison C having at least two layers wherein an inner layer comprises the substrate resin A and an outer layer comprises the adhesive resin B to flow down and the two- layered parison C is suspended between the molds 41, 41 provided under the crosshead die 2 so that the skin material D arranged to the parting surface of the molds held to a closed state is positioned as the outermost layer and the molds are closed along with the skin material C after the parison becomes predetermined length and, then, compressed air is allowed to flow in the two- layered parison C confined in the molds 41, 41 in such a state that the skin material D is in contact with the inner surfaces 41a, 41a of the molds to obtain a skin integrated multilayered hollow molded product wherein the skin material D is bonded to the adhesive resin B of the two-layered parison C.
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