DE29816352U1 - Bag-like item with a gel or liquid filling - Google Patents

Description

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Nünning GmbH, Harmate 28, 48683 Ahaus

"Bag-like object with a gel or liquid filling"
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The innovation relates to a bag according to the preamble of the main claim.

Bags of the generic type have become known, for example, as shoe soles, where the plastic material is formed by an HF-weldable PVC film. A water gel or a silicone gel is used as the gel filling, for example, and it has surprisingly been found that, particularly when used as shoe soles, such bags show signs of fatigue in the area of the weld seam.

which lead to the upper film in particular opening in the area of the weld seam, so that the bag intended as an insole becomes ineffective.

The innovation is based on the task of creating a bag

create a bag that is suitable for absorbing high pressure, tensile and shear forces, but which should also be relatively insensitive to cold, for example down to - 40° and which does not open despite high pressure and tensile loads in the area of the weld seam, and in which the filling provided in the bag does not

chemical reaction with the bag walls.

This problem underlying the innovation is solved by the teaching of the main claim.
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Advantageous embodiments are explained in the subclaims.

In other words, a bag is created that can be used as a pillow, sole, compress or other medical

Aid can be used and which has a gel or

liquid filling, whereby the plastic films forming the bag are HF weldable, so that the bag in its edge area and finally after filling in the area of the filling opening by a high frequency welding process in the preceding and subsequent basically as

HF welding process, can be sealed.

The PVC film used in the prior art has a tear resistance of 200%, for example, while the modified polyethylene film proposed in accordance with the innovation

has a tear resistance of 500% and surprisingly results in a bag in the area of the weld seams that can absorb high pressure, tensile and shear forces and still maintain its tightness.

If such a filled bag is used as a sole, it is able to ensure good pressure distribution, which also applies to seat cushions that are used, for example, in wheelchairs or car seats, i.e. they have to withstand constant point loading in a wide variety of places

If such a bag is used in the medical field, it is suitable for maintaining its strength even at low temperatures, so that compresses or cooling pads can be made from it, or other aids such as implants or the like.

Claims (3)

HABBEL & HABBEL PATENT ATTORNEYS PO Box 3429 ♦ 48019 Münster "*DIPL\-l>vJQ. H.-Q. HABBfL DIPL.-INQ. LUTZ HABBEL EUROPEAN PATENT ATTORNEYS DIPL.-QEOQR. PETER HABBEL TELEPHONE (0251) 535 780 ♦ FAX (0251) 531 996 OUR FILE: ibiUe) N34/21223 X/SC Münster, 10 September 1998 Nünning GmbH, Harmate 28, 48683 Ahaus "Bag-like object with a gel or liquid filling" Protection claims : 1. Bag with a gel or liquid filling, wherein the filling opening for the filling is closed by welding after the filling process and the bag is made of HF weldable plastic films, characterized in that a highly tear-resistant plastic material is used as the plastic film, which simultaneously has a high compressive strength, a high tensile strength and a high shear strength. 2. Bag according to claim 1, characterized in that a highly tear-resistant plastic material is used as the plastic film, which is at the same time insensitive to cold down to about -40°. 3. Bag according to claim 1 or 2, characterized in that a modified polyethylene is used as the plastic material.