US 10,022,899 B2 · Method for producing a plate-like product using a double-belt press

Abstract

A double belt press having a first, lower circulating plastic belt and a second, upper circulating plastic belt. The plastic belts have a first, low flexural strength, and a product gap is formed between facing strands of the plastic belts for forming a plate-like product. A first circulating lower steel belt and a second circulating upper steel belt are provided and have a second flexural strength which is high in comparison to the flexural strength of the plastic belts. A forming section is formed between the facing strands of the steel belts, which forms part of the product gap. The first, lower steel belt runs parallel and bears against a rear face of the first plastic belt in the forming section during operation, and the second upper steel belt runs parallel and bears against a rear face of the second plastic belt in the forming section during operation.

Claims11

Dependent claims

A method for producing a plate-like product using a double belt press, comprising the steps of:

applying at least one thermoplastic preproduct in a feed region to a first plastic belt;
introducing the at least one thermoplastic preproduct into a product gap between the first plastic belt and a second plastic belt, the product gap being located downstream of the feed region;
introducing the at least one thermoplastic preproduct into a shaping region, the shaping region forming part of the product gap;
thermally treating and/or compressing the at least one thermoplastic preproduct in the shaping region with two steel belts which bear in the shaping region against a rear side, facing away from the product gap, of the first and second plastic belts, each of the steel belts having a continuous surface bearing on the rear side;
thermally treating and/or compressing the at least one thermoplastic preproduct in the product gap upstream and downstream of the shaping region;
and
heating of the at least one thermoplastic preproduct in the feed region to weld particles of the at least one thermoplastic preproduct to one another.

4 more elements

Dependencies are inferred from the claim text.

Method for producing a plate-like product using a double-belt press

Life of this patent

Method for producing a plate-like product using a double-belt press

Life of this patent

Abstract

Claims11