Compositions – Preservative agents – Anti-corrosion
Patent
1990-12-21
1993-03-02
Lesmes, George F.
Compositions
Preservative agents
Anti-corrosion
428 12, 428 68, 428 76, 428236, 428224, 428289, 428913, 206494, 252358, D21H 2112
Patent
active
051906945
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a strip-form support of natural and/or synthetic fibers in the form of a nonwoven, woven or knitted fabric which is charged with foam-suppressing chemical agents for use with foaming cleaning products.
One such support is known from Applicants' DE-OS 35 27 089. In this case, the support is charged at its surface, for example, with foam-suppressing agents from the group consisting of paraffin oils, waxes, fatty acid esters, trialkyl amines, silicone oils and mixtures thereof. If a support such as this is introduced into a, basically, foaming cleaning liquid or the like, considerably less foaming, if any, occurs.
The packaging of a support of the type in question has so far remained an unsolved problem. Depending on the quantity and nature of the active substance, the support has a moist, tacky or greasy surface, with the result that the support sticks to the packaging material during unpacking or the user comes into skin contact with the active substance during unpacking which can even lead to refusal to purchase the product. In addition, active substances can escape (for example through evaporation) during unpacking of the support so that the useful life of the support is unnecessarily shortened.
The problem addressed by the invention is to provide a solution by which a support of the type in question can be compactly and handily packed before use, i.e. before coming into contact with cleaning products, and is unable to release any foam-suppressing agents before use.
According to the invention, this problem is solved by a support of the type described at the beginning in that, to ensure that it only develops its full effectiveness on contact with the cleaning products, the support is arranged in packed form in a compact, water-soluble film.
Packaging of the support in this way leads to a considerable improvement in its handling properties. When introducing the support into a cleaning appliance or the like, the user does not come into hand contact with the surface charged with active substance, but only with the skin-friendly water-soluble film. This film dissolves on contact with the cleaning product so that the active substance with which the support is charged can be given off to the cleaning product. The fact that the support is packed in the film considerably reduces its space requirement. Under the effect of the flow of the cleaning preparation and its own gravity, the support only unfolds its full surface after dissolution of the film and only then releases its active substance.
In one particularly practical embodiment, the support is longitudinally folded concertina-fashion. This method of folding enables the support to be unfolded particularly quickly and reliably, particularly when it is arranged in a tube through which foaming liquid flows.
In another embodiment, the support is transversely folded in several layers. This embodiment is particularly intended for relatively wide supports to reduce the space requirement in the packed state.
In one particularly favorable embodiment, a fastener projecting from the film is arranged on the support. By means of this fastener, the support can be attached to a certain part of a cleaning appliance or to a certain part of a tube carrying cleaning product. At the same time, after its effectiveness has been exhausted, the support can be removed again without hand contact by means of the fastener.
In one particularly simple and favorable embodiment of the invention, the fastener is in the form of a cord with hooks at its ends. One of the hooks is pushed through the support while the other is used for fastening.
The invention also relates to the use of the support described above for suppressing foam in the intake pipe of a spray extractor. The use of a support packed in this way in such an apparatus is particularly suitable. A floor surface to be cleaned is first sprayed with a cleaning liquid using a spray extractor, after which the cleaning liquid is removed by suction in the same operation. The arrangement of the support in the sucti
REFERENCES:
English translation of German patent 3,527,089, Kresse et al., pp. 1-13.
Kresse Franz
Osberghaus Rainer
Scheller Bernfrid
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
Lesmes George F.
Ortiz Daniel S.
Pawlikowski Beverly A.
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