Method of forming a foamed article having a simulated wood grain

Details Method of forming a foamed article having a simulated wood grain Method of forming a foamed article having a simulated wood grain

1975-03-10

1976-11-23

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 459, 264 465, 264 466, 264176R, 264DIG14, B29D 702, B29D 2700, B29F 308

Patent

active

039937216

ABSTRACT:
An improved process for preparing foamed articles of thermoplastic resin having a hard, mar-resistant surface that is flat and smooth and resembles natural wood, and an extrusion die therefor. In the process a softened thermoplastic is extruded through apertures of the extrusion die of the invention which is a fiered die having a resin discharge plate having a peripheral recessing portion and a protruding interior portion which are formed on the resin discharge plate by one or more step-ups. Each of the peripheral and interior portions of the resin discharge plate is provided with a plurality of apertures, the aperture density of the peripheral portion being greater than that of the interior portion. A longitudinally extending cooling frame is mounted adjacent the resin discharge plate and extends in the direction of extrusion to at least the forward face of the interior portion of the plate. The cooling frame together with the interior portion of the resin discharge plate form a restrictive contact zone into which foamable resin members from the recessing portion are extruded. These members are thereafter coalesced with resin members extruded from the interior portion of the plate.
The process is particularly suitable for preparing simulated wood articles.

REFERENCES:
patent: 3720572 (1973-03-01), Soda et al.
patent: 3764642 (1973-10-01), Boutillier
patent: 3857914 (1974-12-01), Ashima et al.

Affiliated with

Also associated with

Rating

Method of forming a foamed article having a simulated wood grain does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of forming a foamed article having a simulated wood grain, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of forming a foamed article having a simulated wood grain will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-231995