PROCESS FOR MAKING A LAMINATED SHEET

摘要

A process is provided for making stiff, lightweight laminate materials. At least one sheet of textured lamina having raised pointed structures is forced against a softer plain lamina so as to embed the structures therein. The pointed structures raised from grooves carved into the surface of the sheet material by means of a set of teeth carried on a knife element. The pointed structures may pierce through the softer lamina such that the protruding tips may be bent over or clinched to prevent their easy withdrawal. Two such texturized lamina may be used to sandwich and pierce through the softer lamina and are co-clinched by the other. In this way a light and stiff laminate is created.

主权项

1. A process for making a laminate sheet, comprising:
providing at least one face of a sheet of a first relatively hard material with a surface texture having a plurality of generally pointed structures that have been raised from the face of the sheet; bringing the textured face of the first material into contact with a face of a second softer material; and forcing the two faces together such that at least some of the pointed structures enter the second material to form a laminate sheet.