Patent · US Expired

Method for the vertical manufacture of sandwich structural elements

US4961810A · kind A · utility

2Cited by

12References

4Claims

0Family size

Inventors

Paul Svensson · Laholm, SE
Christer Nilson · Laholm, SE
Jan Backlund · Lidingö, SE
Karl G. Ericsson · Enköping, SE
Leif Jilkén · Kalmar, SE
Harry Kihlberg · Säffle, SE

Key dates

Filing date	Sep 9, 1988
Grant date	Oct 9, 1990
Priority date	—
Expiry date	Sep 9, 2008

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24661
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

Method and apparatus for manufacturing so-called sandwich structural elements in laminated materials, where a core (10) is provided with a covering layer (18) on at least one side. The core in the form of a solid or expandable material is advanced from above and downwards in a substantially vertical path, and the covering layer or layers (18) are pressed against, and joined to the core during continued vertical advance thereof from above and downwards.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.