Process for producing foamed material from waste paper and the l

Details Process for producing foamed material from waste paper and the l Process for producing foamed material from waste paper and the l

1996-10-11

1998-01-13

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Producing or treating porous product

264 37, 264 48, 264 53, 264162, 264232, 264DIG69, 521 841, B29C 4402, B29C 4420

Patent

active

057075794

ABSTRACT:
A process for the production of foamed material from waste paper and the like, such as paper, cardboard, waste cardboard or materials with similar properties, are usable in the same way as raw material, either sorted by type of material or as a raw material mixture. First, a liquid-containing pulp is prepared from the raw materials. The foaming and hardening of this pulp takes place under the action of microwave radiation. By using suitable molds permitting an unobstructed access of the radiation to the liquid-containing mass and unhindered expulsion of the resulting vapor, it is possible to manufacture any type of shaped bodies in a continuous or batch-wise process.

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