Process for producing foarmed articles and the foamed article

Details Process for producing foarmed articles and the foamed article Process for producing foarmed articles and the foamed article

2006-11-21

2006-11-21

Kuhns, Allan R. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

C264S051000, C264S053000, C521S084100

Reexamination Certificate

active

07138078

ABSTRACT:
It is an object of the present invention to provide a method for manufacturing a high-quality foam that can be produced stably on an industrial scale and that affords excellent thermal insulation as a foam with thin cell membranes, which method ensures uniform molten mixture fluidity, which is an essential condition for achieving consistent foam quality, in the manufacture of a foam by mixing starch as one molten polymer compound with another polymer compound having a different melt viscosity, and to provide a foam manufactured by this method. Water is added to and mixed with a plant-derived fibrous material and starch to manufacture a foam of a plastic resin containing as compositional components starch and a plant-derived fibrous material such as pulverized paper, pulverized wood, or the like. A foam is manufactured by a method comprising a step of producing pellets in which starch molecular spheres are agglomerated to each other or to the plant-derived fibrous material without the starch undergoing agglutination, and the step of foaming the pellets by mixing them with a plastic resin, and included in between these two steps is a step of drying the pellets at a temperature not higher than the starch agglutination temperature.

REFERENCES:
patent: 5476621 (1995-12-01), Kustner
patent: 5565154 (1996-10-01), McGregor et al.
patent: 6521147 (2003-02-01), Arentsen et al.
patent: 6571802 (2003-06-01), Yamashita
patent: 7-17571 (1995-01-01), None
patent: 2001-354795 (2001-12-01), None
patent: 2002-161162 (2002-06-01), None

Affiliated with

Also associated with

Rating

Process for producing foarmed articles and the foamed article does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing foarmed articles and the foamed article, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing foarmed articles and the foamed article will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3655963