DE1911461U - VALVE BOTTOM BAG MADE OF PLASTIC FILM. - Google Patents

Description

P.Ä.263S55 * 18.ie2

Raunheim / Main, April 16, 1962.

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Eugenie N i t t e 1, Baunlieim / Main, Kelsterbacherstrasse IS. Valve bottom bag made of plastic sheeting.

It is "known to produce so-called valve bags from paper or plastic film, with the aim of obtaining a container-like packaging that can only be filled through a valve nozzle. The advantage of this Packaging lies in the fact that such bags are closed on all sides the valve can be hung on a filling pin of a filling machine and without any further closure (at most, however, by tying or Welding of the valve) are transportable.

"Experience has shown that - especially with heavy products - The sack must have as few seams as possible, as these are always exposed to particular stress during transport. Shear seams in this respect offer the least resistance to the pressing product. Vienna Seams cannot be avoided during manufacture is the overlapped one Always give preference to seams. The previously known seam methods solve this problem insufficiently.

The invention seeks to improve the known valve bags and ZTi. especially in the resilience of the bottom (head) seams, she assumes to produce a valve bottom bag, preferably from plastic film, which only overlapped one at the top and bottom part Seam shows, without this as Eanteniiaht from the pressing filling material is particularly stressed.

In detail, the bottom (Hopf) fold is as follows dar:

A flat section of hose made of plastic film (drawing I / l) is placed in such a way that one end of the upper half of the hose (cut side) is folded to the outside at the width of the floor (drawing II / 2). A prefabricated inner floor sheet is placed in the parts opened in this way (Drawing HI / 3) with smock slit (drawing III / -'-! -) inserted, the valve (drawing HI / 5) is already inserted in the latter. Then the bottom flaps (drawing IV / 6) become the center of the bottom folded back. An also prefabricated floor sheet (drawing V / 8) concludes this bottom fold. Sine IContour welding in reduced bottom shape (drawing V / 9) then connects all the parts mentioned in one welding process. Som.it is achieved that the Only place the product on the outer edges of the bottom (drawing V / 7) of the Sack presses while the bottom weld seam (drawing V / 9) is not exposed to any external edge stress from the filling material.

The head section created in this way is repeated without a valve or air slot at the bottom of the sack =,

It is thought that the bottom inner leaves, especially the valve, made of coated papers, composite foils or even pure plastic foils to manufacture.

Claims (4)

Patent Claims: 1. Valve bottom sack, characterized in that the folded bottom and head part only has an overlapped seam in a reduced size Bottom shape shows, without this being an edge seam from the product is claimed. 2. Valve bottom bag according to claim 1, characterized in that a bottom (head) inner sheet is inserted for reinforcement. 3 valve bottom bag according to claim 1 and 2, characterized in that that the head inner sheet has a central slot through a valve can be pushed. 4. valve bottom sack according to claims 1-3, characterized in that that a bottom (head) cover sheet is placed on the outside will. 5 · valve bottom bag according to claims 1-4, characterized in that the inner leaves and the valve are made of coated paper, composite film or plastic film.