Invention Grant
US08474689B2 Method for in-die lamination of plural layers of material and paper-containing product made thereby 有权
由此制成的多层材料和含纸制品的模内层压方法

Method for in-die lamination of plural layers of material and paper-containing product made thereby
Abstract:
A method for making a multilayered paper-containing product, for example a paper plate or tray, includes assembling two or more sheets of paper-containing material cut into blanks. The blanks are pressed together and shaped in a die, usually with a bonding agent being used to secure the blanks. Pleats are formed in the curved portion of the shaped product. However, the pleats on each blank are formed independently so that the folded region formed in the pleats are arranged in a staggered array and are not interleaved with the pleats of the other blank.
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