Method and apparatus for molding fiber mixture

Details Method and apparatus for molding fiber mixture Method and apparatus for molding fiber mixture

1998-07-23

2000-03-07

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Controlling fluid pressure in direct contact with molding...

264517, 264121, 264122, 425 801, D04H 154

Patent

active

060336072

ABSTRACT:
A method and apparatus for molding a cushion member from a fiber mixture by a filling process comprising filling a fiber mixture composed of synthetic matrix fibers and binder fibers dispersed therein into a mold cavity of an air-permeable mold by a transportation air stream and a heat-treatment process comprising making a molding air stream for heating and/or cooling the fiber mixture filled in the mold cavity to pass through the fiber mixture, wherein a contact surface of the mold with the fiber mixture is divided into a plurality of contact sections, and a flow rate and/or pressure of an air stream passing through each of the contact sections are regulated to a predetermined condition so that the air stream in the mold cavity is differently controlled in the filling process and the heat-treatment process.

REFERENCES:
patent: 4379101 (1983-04-01), Smith
patent: 5108691 (1992-04-01), Elliott
patent: 5378296 (1995-01-01), Vesa
patent: 5571465 (1996-11-01), Gill et al.
patent: 5587121 (1996-12-01), Vesa

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