Patent Number: 6,251,330

Title: Method and device for manufacturing plastic-based materials in web form, such as floor and wall covering materials, and also such material manufactured by the method

Abstract: Method and device for manufacturing plastic-based materials in web form, such as floor and wall covering materials, and also such a material manufactured by the method. During the production, spherical particles (12) in substantially one size are used. The particles are deposited as a layer (18) on a substrate (1) by doctoring by means of allowing the particle mass to flow down into a gap between a depositing member (16) and the passing substrate (1). Thereafter, the particles are sintered together by heating, whereafter the solidified layer (25) is caused to fuse into a homogenous form by means of heating during simultaneous compression in order to shape the web material (26).

Inventors: Johnard; Bengt Otto (Gothenburg, SE), Linden; Per Anders Fredrik (Askim, SE), Ryde; Lasse (Ravlanda, SE)

Assignee: Forbo International SA

International Classification: B29C 43/22 (20060101); B29C 43/30 (20060101); B29D 31/00 (20060101); B29C 035/10 (); B29C 043/22 (); B29C 043/52 ()

Expiration Date: 06/26/2018