Patent ID: 11858691
Assignee: AMERIGLOBE, LLC
Field: Other special machines (Mechanical engineering)
Classification: CPC B  A  D  Y | IPC A  B  D

Claim 19:
20. A method of forming a flexible plastic fabric bulk bag, comprising the steps of:
a) providing a folded first bag portion having a first open end, wherein the folded first bag portion is formed by folding a substantially flat piece of fabric;
b) providing a folded second bag portion having a second open end, wherein the folded second bag portion is formed by folding a tubular piece of fabric and wherein the second open end of the second folded bag portion has substantially the same shape as the first open end of the folded first bag portion;
c) overlapping the first open end and the second open end to form an overlapped area of the folded first bag portion and the folded second bag portion and to put interior surfaces of the folded first bag portion in contact with exterior surfaces of the folded second bag portion, and wherein part of the folded second bag portion is inside the folded first bag portion and a portion of the folded first bag portion is around the part of the folded second bag portion in the overlapped area, and wherein some exterior surfaces of the folded first bag portion are in contact with one another in the overlapped area;
d) applying heat and pressure to the overlapped area to form a heat sealed bag joint between the interior surfaces of the folded first bag portion and the exterior surfaces of the folded second bag portion that are in contact; and
e) wherein the bag joint is not formed between at least a substantial portion of said exterior surfaces of the folded first bag portion that were in contact with each other in the overlapped area when exposed to the heat and pressure at step (d) and the bag joint is not formed between at least a substantial portion of surfaces of the folded second bag portion that were in contact with each other when exposed to heat and pressure at step (d) so that the bulk bag can expand to an open configuration after the bag joint is formed.