초록 ▼

A packaging material web for a self-supporting packaging container wall which includes a number of continuous wall panels manufactured from flexible material layers which are interconnected with one another by means of a pattern of seals. Between the seals, there are formed cells which are inflatabl

A packaging material web for a self-supporting packaging container wall which includes a number of continuous wall panels manufactured from flexible material layers which are interconnected with one another by means of a pattern of seals. Between the seals, there are formed cells which are inflatable with a view to imparting to the material the requisite rigidity. A packaging container manufactured from the packaging material comprises a number of wall panels provided with inflatable cells, the length of the wall panels on inflation of the cells being reduced so that the height of the packaging container shrinks. Along one of the vertical side edges of the packaging container, there is a sealing joint (10) which is less flexible and counteracts such shrinkage so that the packaging container tends to be warped. In order to counteract this, the seals defining the cells are given asymmetric form, with one narrow and one broad end. The narrow end of the seals is turned to face towards the sealing joint (10) and the interjacent cells will hereby have ends of varying size, which corrects the shrinkage of the material such that the effect of the sealing joint (10) is reduced and the packaging container obtains the desired, symmetric form.

대표청구항 ▼

[ What is claimed is:] [1.] A packaging material web for a self-supporting packaging container wall comprising a plurality of continuous wall panels, each of which includes flexible material layers which are interconnected with one another in a pattern of seals distributed over the surface area of t

[ What is claimed is:] [1.] A packaging material web for a self-supporting packaging container wall comprising a plurality of continuous wall panels, each of which includes flexible material layers which are interconnected with one another in a pattern of seals distributed over the surface area of the layers, the seals between them dividing up a chamber defined by the layers into patterns of mutually interconnected, substantially elongate and inflatable cells, wherein a number of the seals within at least one wall panel have substantially the same orientation and display one narrow end and one broad end, wherein each of the seals has the flexible material layers interconnected across the entire width at all cross sections of the seal.