Extruder with exchangeable filter for foamed plastic material

Details Extruder with exchangeable filter for foamed plastic material Extruder with exchangeable filter for foamed plastic material

1986-12-24

1988-02-16

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

Means permitting removal or substitution of elements during...

210234, 210236, 425198, B29C 4768

Patent

active

047252154

ABSTRACT:
An extruder wherein the housing which defines a passage for the flow of foamed plastic material at elevated pressure and temperature to the shaping station contains a reciprocable carrier of one or more filters. The carrier has a filter compartment and is movable relative to the housing between a first position wherein the plastic material must flow from the inlet of the passage, through the compartment and the filter therein, and on to the outlet of the passage, and a second position in which the compartment is sealed from the passage. An expansion chamber in the housing and/or in the carrier communicates or can be caused to communicate with the compartment in the second position of the carrier so as to allow for a controlled reduction of pressure of plastic material before the compartment is made accessible for removal of inspection of the filter in the compartment. The compartment is thereupon rendered accessible, either in the second position of the carrier or by moving the carrier to a further position.

REFERENCES:
patent: 3455357 (1969-07-01), Zink
patent: 3804758 (1974-04-01), Cooper et al.
patent: 3900399 (1975-08-01), Kreyenborg et al.
patent: 4025434 (1977-05-01), Mladota
patent: 4202659 (1980-05-01), Kinoshita et al.
patent: 4507072 (1985-03-01), Gaul, Jr.
patent: 4588502 (1986-05-01), Zibell et al.

Affiliated with

Also associated with

Rating

Extruder with exchangeable filter for foamed plastic material does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Extruder with exchangeable filter for foamed plastic material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extruder with exchangeable filter for foamed plastic material will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2218494