Method of making a welded double fabric tube

摘要

A fabric tube with two passages comprises a fabric tube sheet. A first fabric weld strip with right and left flanges extending laterally from a bottom edge of a weld fin is welded to a first surface extending the length of the fabric tube sheet at a distance D1 from the first edge thereof A second fabric weld strip is welded to an opposite second surface and extends the length of the fabric tube sheet between the first fabric weld strip and the second edge of the fabric tube sheet at a distance D2 from the second edge of the fabric tube sheet. The first edge of the fabric tube sheet is welded to the weld fin of the second fabric weld strip and the second edge of the fabric tube sheet is welded to the weld fin of the first fabric weld strip to form two passages.

主权项

1. A method of making a fabric tube with two passages, the method comprising:
providing a fabric tube sheet with a length L between opposite first and second ends thereof, a width W between opposite first and second substantially parallel edges thereof, a first surface, and a second surface opposite the first surface; providing a first fabric weld strip comprising right and left flanges extending laterally from a bottom edge of a weld fin and welded to the first surface such that the weld fin thereof extends from the first surface and such that the first fabric weld strip extends from the first end to the second end of the fabric tube sheet at a selected first distance D1 from the first edge of the fabric tube sheet; providing a second fabric weld strip comprising right and left flanges extending laterally from a bottom edge of a weld fin and welded to the second surface such that the weld fin thereof extends from the second surface and such that the second fabric weld strip extends along the second surface from the first end to the second end of the fabric tube sheet between the first fabric weld strip and the second edge of the fabric tube sheet at a selected second distance D2 from the second edge of the fabric tube sheet; when the first and second fabric weld strips have been welded to the fabric tube sheet to form a fabric tube sheet with weld strips, welding the first edge of the fabric tube sheet to the weld fin of the second fabric weld strip and welding the second edge of the fabric tube sheet to the weld fin of the first fabric weld strip to form two passages.