| 摘要 |
The carrier bag is of the type having two wide sides and a folded bottom and it is manufactured from a tubular synthetic resin web. At the open end the bag is provided with reinforcing folds or reinforcing strips extending transversely of the bag. Grip openings are punched out in the centre of the opening edge. The reinforcing folds or strips are welded to the wide sides of the bag by means of weld seams extending obliquely towards the opening edge, one on either side of the grip opening, and across the entire width of the folds or strips. The carrying grips are thus formed by the centre part of the reinforcing folds or strips between the two inclined weld seams. Consequently stresses on the handle are uniformly distributed on the four weld seams, in that each weld seam need only absorb a quarter of the load of the goods in the bag. |
