초록 ▼

A honeycomb product is made by providing a pleated sheet having legs which are made by securing two parts of a fold together. Two sheets are combined by securing the end of a leg to a crease of an opposite sheet. The sheet material is folded to provide alternating taller and shorter folds, and the t

A honeycomb product is made by providing a pleated sheet having legs which are made by securing two parts of a fold together. Two sheets are combined by securing the end of a leg to a crease of an opposite sheet. The sheet material is folded to provide alternating taller and shorter folds, and the taller folds are modified to provide the legs by cementing parts of the taller folds together. Gluing is accomplished by moving glue heads across the sheet at high velocity through the use of linear motors. The glue lines are heated after being laid down by the use of electromagnetic radiation, preferably from a high-powered laser. The finished product may be used as insulated window coverings, or the like.

대표청구항 ▼

A process for the manufacture of expandable, collapsible material having hollow portions therein, for use in a blind, shade or the like, comprising folding a first sheet of material to provide a plurality of transverse creased folds therein, folding a second sheet of material to provide a plurality

A process for the manufacture of expandable, collapsible material having hollow portions therein, for use in a blind, shade or the like, comprising folding a first sheet of material to provide a plurality of transverse creased folds therein, folding a second sheet of material to provide a plurality of transverse creased folds therein, modifying the first sheet to provide a plurality of first legs therein by forming folds and by securing parts of each of said folds together and combining said first and second sheets of material so that said first legs are directed towards the second sheet and a fold of said second sheet is directed towards and in-line with each of said first legs, and adhering said first legs at their free ends to the folds of the second sheet in line therewith.