MANUFACTURING METHOD FOR MULTI-LAYER FLOOR PANELS
卷宗概要
发明人
Grzegorz LASAK; Piotr HOFFMANN
IPC 分类
CPC 分类
In a first pressing stage, constituting preliminary pressing, glued layers forming a single multi-layer floor panel () are pressed for a time between 5 and 50 seconds, until a physical, local joining of the layers is obtained allowing determination of the position of the sheets of solid wood constituting a top layer () being placed on a core composite layer () covered with an adhesive. In the next stage, a stack is formed from numerous floor panels () thus pressed, after which the said stack of preliminarily pressed floor panels () is subjected to pressing, constituting main pressing, for a time longer than 300 seconds, until the adhesive bond of the required durability and strength is obtained, wherein the adhesive () applied to the core composite layer () is a hot-melt polyurethane adhesive.
原文（中文）
In a first pressing stage, constituting preliminary pressing, glued layers forming a single multi-layer floor panel () are pressed for a time between 5 and 50 seconds, until a physical, local joining of the layers is obtained allowing determination of the position of the sheets of solid wood constituting a top layer () being placed on a core composite layer () covered with an adhesive. In the next stage, a stack is formed from numerous floor panels () thus pressed, after which the said stack of preliminarily pressed floor panels () is subjected to pressing, constituting main pressing, for a time longer than 300 seconds, until the adhesive bond of the required durability and strength is obtained, wherein the adhesive () applied to the core composite layer () is a hot-melt polyurethane adhesive.