Flexible bags – With closure – Self-closing type
Patent
1984-05-29
1986-04-08
Kittle, John E.
Flexible bags
With closure
Self-closing type
383 44, 383 57, 604323, 604335, 604350, B65D 3024, A61F 544
Patent
active
045817634
ABSTRACT:
A container, which is flat in its empty condition, of plastic, rubber or another flexible material, especially for the collection of urine and/or faeces. The container comprises two outer walls (2) joined together in a surrounding seam (6), an inlet (54) and, if desired, an outlet (58). The inlet is provided with a non-return valve formed by enveloping a tube end (76) in two intermediate layers having the same extent as the outer walls (2) in the width direction of the container, the intermediate layers having free edges (80) spaced from the mouth (78) of the tube. The intermediate layers lie closely against each other in an area (56) situated between the edges (80) and the mouth (78) and delimited laterally by seams (72,74) joining the intermediate layers. In the length direction of the container the intermediate layers extend to a greater distance from the mouth (78) than the distance from the mouth (78) to the free edges (80), the free edges (80) bordering on an aperture (66) in each of the intermediate layers, which apertures (66) delimit the non-return valve. Preferably, the intermediate layers have the same extent as the two outer walls (2) both in the length and width directions and all four layers are joined together in the surrounding seam (6), preferably forming a flange (96) situated outside the seam (6). The outer walls (2) and the intermediate walls can be joined in longitudinal seams (8,10,12,14,16,18,20,22,24,26,28), running in the length direction of the container, forming a number of interconnected chambers, the intermediate walls being formed by the intermediate layers, which are joined with each other in a number of not through-going seams (24,26,28) and with the respective adjacent outer wall (2) in a number of not through-going secondary seams (8,10,12,14,16,18,20,22), said secondary seams being displaced with respect to said primary seams, and the intermediate layers have one or more apertures (66,68,86,88,90,92), preferably near the top and bottom of the container.
The container is suitable for large scale production. It has a reliable non-return valve, which eliminates the risk of leakages.
REFERENCES:
patent: 3797734 (1974-01-01), Fleury et al.
patent: 3823716 (1974-07-01), Hale
patent: 3888236 (1975-06-01), Marx
patent: 4421509 (1983-12-01), Schneider et al.
patent: 4462510 (1984-07-01), Steer et al.
Coloplast A/S
Kittle John E.
Rosen Lawrence
Seidleck James J.
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