Apparatus for producing a foamed polystyrene sheet having a dens

Details Apparatus for producing a foamed polystyrene sheet having a dens Apparatus for producing a foamed polystyrene sheet having a dens

1974-11-21

1977-03-01

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Immersed shaping orifice discharging directly into liquid...

Additional downstream means for treating product by fluid

425 71, 425325, 425404, 425817C, B29D 2304

Patent

active

040099768

ABSTRACT:
Polystyrene foam is extruded upwardly as a tube into a cooling media of boiling water, both the interior and exterior surfaces of the cylindrically shaped extrudate passing through a bath of boiling water of variable depth. The polystyrene foam extrudate produced by such a method has a high density at the interior and exterior surfaces, with the density progressively decreasing from these surfaces toward the center core of the extrudate.

REFERENCES:
patent: 2043455 (1936-06-01), Voss et al.
patent: 2176925 (1939-10-01), Reichel et al.
patent: 3121760 (1964-02-01), Kline
patent: 3221084 (1965-11-01), Peticolas
patent: 3364524 (1968-01-01), Hsia
patent: 3702224 (1972-11-01), North et al.
patent: 3749540 (1973-07-01), Upmeier

Affiliated with

Also associated with

Rating

Apparatus for producing a foamed polystyrene sheet having a dens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for producing a foamed polystyrene sheet having a dens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for producing a foamed polystyrene sheet having a dens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1350269