Tubular liner and a method for connecting ends of liner tubes

Details Tubular liner and a method for connecting ends of liner tubes Tubular liner and a method for connecting ends of liner tubes

F - Mech Eng,Light,Heat,Weapons

16

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F16L 13/00 (2006.01) B29C 65/00 (2006.01) B29C 65/62 (2006.01) F16L 11/20 (2006.01) F16L 31/00 (2006.01) F16L 39/02 (2006.01) B29C 63/00 (2006.01)

Patent

CA 2172456

A method for spirally connecting two liner tubes each having an inner layer of a resin absorbent sheet and an outer layer of a hermetic plastic film: (a) turning over the outer layer film to expose a length of the sheet layer; (b) unthreading that portion of the thread with which the exposed portion of the sheet layer is stitched; (c) unrolling and partially flattening the unthreaded portion of the sheet; (d) cutting the flattened portion of the sheet along a straight oblique line; (e) abutting together the thus cut ends of the sheets of the two liner tubes; (f) stitching together the cut ends of the sheets; (g) rolling up the opened sheets to make them tubular again; (h) re-stitching the sheets along their long sides; and (i) unrolling the overturned film layer so as to cover up the exposed portions of the sheet again.

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