Lightweight building board

US5942307A · kind A · utility

Assignee

• Huels Aktiengesellschaft · DE

Inventors

• Walter Hellermann · Dorsten, DE
• Christian Baron · Haltern am See, DE
• Juergen Finke · Marl, DE
• Hubertus Ohm · Haltern, DE

Key dates

• Filing date: Jun 10, 1996
• Grant date: Aug 24, 1999
• Expiry date: Jun 10, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24149
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A multilayered lightweight building board, comprising a support core, two cover layers on the support core, where the support core is made of laterally fused-together tubes. The tubes have an inner layer, and an outer layer, where the outer layer has a softening point 10-90.degree. C. lower than the softening point of the inner layer. The lightweight building board is made from compatible thermoplastic materials, so they can be mechanically recycled by the customary processing methods for thermoplastics.