Method for the cooling of a tubular extrudate of expanded polyst

Details Method for the cooling of a tubular extrudate of expanded polyst Method for the cooling of a tubular extrudate of expanded polyst

1974-12-02

1976-10-12

Thurlow, Jeffery R.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

264 48, 264 95, 264146, 428320, B29D 2700

Patent

active

039859312

ABSTRACT:
A surface treating device to be attached to the upstream end of a cooling and sizing mandrel used in the manufacture of a web of expanded polystyrene of a general purpose grade from a warm, tubular extrudate of such material, such treating device serving to prepare the dense, radially innermost surface of such tubular extrudate so that it can be drawn over the cooled, cooling and sizing mandrel in tight, surface to surface contact therewith to substantially reduce the amount of material from the web which accumulates on the cooling and sizing mandrel.

REFERENCES:
patent: 2814071 (1957-11-01), Allan et al.
patent: 3221084 (1965-11-01), Peticolas
patent: 3426111 (1969-02-01), Simpson
patent: 3468467 (1969-09-01), Amberg
patent: 3560600 (1971-02-01), Gliniecki
patent: 3574806 (1971-04-01), Potter et al.
patent: 3796781 (1974-03-01), Edwards et al.

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