| 摘要 |
Bags (38,40) used for storing and/or transporting material (48) such as garbage or refuse prior to collection or transport to disposal. The bags (38,40) are all made by extruding a tube (10) of plastic material. The tube (10) is folded so that it comprises eight panels (12,20a,20b,21a,22b,22a,14;62a,57,56,64a,64b,55,54,62b;75a,76a,77a,78a, 78b,77b,76b,75b) one above the other, in one case by a number of gussets (20,21,22) at one side, in another by gussets (53a,53b) at each side and then folding over the tube (52) and in a third by folding the tube (71) over twice. The panels are welded together. A knife makes a cut in the form of a quarter of sine wave to form an open end for the bags (38,40; 64,66;86) when in use. In another embodiment, the tube is folded over once and the knife makes a cut in the form of half a sine wave. The bag thus has a reduced width for storage and display and in use has four (or in the fourth embodiment, two) tie parts (T) which are capable of being readily tied together by hand. <IMAGE> |
