Title:
DEVICE FOR MANUFACTURING MOLDED SHAPE FROM FOAMED PLASTIC
Document Type and Number:
Japanese Patent JPS62179927
Kind Code:
A
Abstract:
An improved machine for the production of foamed plastic molded parts, including soft foam plastics, i.e. for processing particles without foaming capacity, and including the processing of greatly frothed plastic foam particles, i.e. particles with but little foaming capacity, is obtained in that a pressure equalization system is provided which creates virtually equal pressure conditions while the mold cavity is being filled, i.e. the same overpressure in the material supply line as in the mold cavity. This makes it possible to introduce the foam particles, already compressed in the material supply system, into the mold cavity in a continuous flow by means of an injector, with excess foam particles being blown back into a tank provided in the material supply system by the injector after the mold cavity is filled. Due to this operating principle, the machine can be designed so that it can be set up for the processing of different materials such as soft foam particles, rigid foam particles and greatly expanded rigid foam particles.
Inventors:
HANSU ERURENBATSUHA
Application Number:
JP17901486A
Publication Date:
August 07, 1987
Filing Date:
July 31, 1986
Export Citation:
Assignee:
ERLENBACH HANS
International Classes:
B29C44/00; B29B11/00; B29C44/34; B29C44/44; B29C44/60; (IPC1-7): B29C67/22
Attorney, Agent or Firm:
Toshio Yano