Abstract A convolutely wound tube having portions adjacent the inside and outside edges thereof more pliable than the remainder thereof for easily conforming to the contour of the inside and outside surfaces thereof and method for making same from a predetermined length of elongate sheet material having opposed first and second surfaces and first and second longitudinal side edges, wherein the method includes mechanically deforming a minor portion of the sheet material adjacent the first or second longitudinal edge, or both, thereof to render same more pliable than the major portion of the sheet material, convolutely winding a predetermined length of the elongate sheet material transversely of the length into a convolute tube while forming the inside edge of the tube from the first longitudinal edge and the outside edge of the tube from the second longitudinal edge of the sheet material so that the pliable portion of the sheet material adjacent the inside and outside edges will readily conform to the contour of the inside and outside surfaces of the convolute tube, and securing the convolute tube in the wound condition with a flop formed by the second longitudinal edge.
A convolutely wound tube formed from a predetermined length of elongate sheet material having opposed surfaces and longitudinal side edges, said tube comprising a plurality of overlying convolute windings of the sheet material including inside and outside surfaces and edges formed by the opposed surfaces and the longitudinal edges of the sheet material; adhesive means for securing said convolute windings in the overlying relation and for securing said inside edge to the next outer convolute winding; a minor portion of the sheet material adjacent at least the outside edge of said tube being rendered more pliable than the major portion thereof and readily conformable to the contour of the surface of said convolute tube; the sheet material rendered more pliable forming a portion of the outside surface of said tube; and said adhesive means omitted from a minor portion of the sheet material adjacent the outside edge thereof to form a flap tube.
Claim 2
Dependent Claim
153 words
A convolutely wound tube formed from a predetermined length of elongate sheet material having opposed surfaces and longitudinal side edges, said tube comprising a plurality of overlying convolute windings of the sheet material including inside and outside surfaces and edges formed by the opposed surfaces and the longitudinal edges of the sheet material; adhesive means for securing said convolute windings in the overlying relation and for securing said inside edge to the next outer convolute winding; a minor portion of the sheet material adjacent at least the outside edge of said tube being rendered more pliable than the major portion thereof and readily conformable to the contour of the surface of said convolute tube; the sheet material rendered more pliable forming a portion of the outside surface of said tube; and said adhesive means omitted from a minor portion of the sheet material adjacent the outside edge thereof to form a flap tube.
Claim 3
Dependent Claim
78 words
A convolutely wound tube as set forth in claim 1 wherein a minor portion only of said sheet material adjacent said inside edge of said tube is rendered more pliable than the major portion thereof and readily conformable to the contour of said inside surface of said convolute tube, said minor portion of the sheet material adjacent said inside edge rendered more pliable comprising a width substantially less than the circumference of the inside surface of said tube.
Claim 4
Dependent Claim
49 words
The convolutely wound tube of Claim 1 wherein said minor portion of said sheet material rendered more pliable comprises longitudinally extending corrugations rendering the sheet more pliable; and said minor portion rendered more pliable having a width substantially less than the circumference of the outside surface of said tube.
Claim 5
Dependent Claim
47 words
A convolutely wound tube as set forth in claim 3 wherein said minor portion of sheet material rendered more pliable extends a greater width than the width of the omitted adhesive, whereby a few only of said corrugations are adhered to the surface of said convolute tube.