Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1992-10-14
1994-10-18
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
2643281, 2643289, 425116, 425149, 425542, B29C 4500
Patent
active
053565878
ABSTRACT:
A process for producing a hose having a connecting portion includes the steps of a connecting step, and a molding step. In the molding step, a dividable mold is employed in which a first sealing member and a second sealing member are retained so as to form a sealing ring. The sealing ring firmly retains a hose in the mold without pinching and damaging it. Further, the mating surfaces of the first sealing member and the second sealing member are disposed so as to deviate from the center of the sealing ring. Furthermore, a chucking member adapted for locally pressing the hose is disposed adjacent to the sealing ring. Moreover, a recessing portion communicating with the cavity of the mold by way of a narrow passage is formed and the first minimum pressure of the molding material, enabling to pass through the narrow passage, is set less than the sealing pressure exerted between the sealing ring and the hose and is set more than the second minimum pressure thereof, enabling to inhibit the short shot failures.
REFERENCES:
patent: 3458619 (1969-07-01), Prochaska
patent: 3938774 (1976-02-01), Smith
patent: 4490315 (1984-12-01), Charlebois et al.
patent: 4650220 (1987-03-01), Grabowski
patent: 4867663 (1989-09-01), Woerner et al.
patent: 5003775 (1991-04-01), Leistritz
Mitsui Kenichi
Ogawa Hajime
Takada Seiji
Fiorilla Christopher A.
Silbaugh Jan H.
Toyoda Gosei Co,., Ltd.
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