FR2631225A1 - Discardable hygienic covering for WC seats - Google Patents

Abstract

The discardable hygienic covering is made of biodegradable materials, assembled without bonding, and discharged automatically after use under the action of the water flush. Consisting of a horizontal part 1, radiated, and treated for non-adherence 3; and a receptacle 4, with tucks 5 under the overhangs of the pan, a non-return flap 6 and projections 7.

Description

Disposable hygienic cover for water closet seats.

The present invention relates to a disposable hygienic coating, to be used on the seats of water closets, in order to protect themselves from dirt and the risk of infections.

The cleanliness and sanitary problems of.

water closet seats, particularly in public places, have sparked many inventions. In particular disposable coverings after use, since as early as 1924 there is a patent IARYER, USA, n2 1505067, others have followed. And it is paradoxical to note that, in spite of the strong hygienic tendency of the modern world, none of these products has entered common use. We think their disadvantages prevented them
These drawbacks, listed below, affect all or part of all existing coatings:
Discontinuity or perforations that do not provide sufficient insulation for the user, relative to the seat.

Difficult installation due to the softness of the materials used, generally paper.

Lack of comfort due to the thinness of these materials and the frequent humidity of the seats.

Difficulties of automatic elimination in the emptying under the effect of flushing. There are several reasons for this: seat crowns are often soiled with urine when it is not more viscous, and wet with water.

Existing coatings stick to these places.

The shapes of their central parts, descending into the bowls of water closets, are not functional: in particular they do not go under the overhangs of the upper edge of the bowls, precisely where the flushing outlets are generally located. This, in addition to puncturing or disfavouring the automatic entrainment by the stream of water, also has the drawback of reducing the volume of passage of the excrements, sometimes causing the user to get dirty with them. The lower bottoms of these coverings are most often too short vertically, and too wide horizontally. They are partially out of the water stream, further weakening the automatic evacuation.

And, retaining the materials above the water of the siphons, they promote the release of bad odors, and the spurts.

Finally, assembly adhesives delay or prevent the natural degradation of the materials used.

The present invention aims to remedy all these drawbacks, its main advantages are to ensure the automatic evacuation of coatings under the effect of flushing water, even when they have been applied to a soiled, sticky or wet surface. . To prevent the spattering of materials and water, the backwash of bad odors. Improve the ease of fitting the covering on the seat, and the comfort of the user. Avoid glues.

As described below, these coatings are made of biodegradable or water-soluble materials, such as cellulose wadding, polyvinyl alcohols for example. They take, of course, a horizontal part covering the crown of the seat on which one sits, and integrally a part forming a container which descends into the bowl.

But by difference with the existing products:
They are assembled without binder or glue, by means such as heat sealing, ultrasound, high frequency or preferably by dry stapling. I1 is here reminded that in stationery, dry stapling consists in strongly pressing the layers of paper to be assembled between hard and notched surfaces, so that the layers interpenetrate slightly without between perforated.

The horizontal upper part of the coating is made non-stick on the one hand by spoke faganese, obtained by grooving or embossing, on the other hand by the treatment of its underside by granulation, coating or spraying, hot or cold, non-stick products such as microgranules of crushed grains, or plastics of the same effect.This treatment prevents sticking to the crown of the seat, facilitates installation by slightly stiffening this part of the coating, and improves by thickening the user comfort,
The container, secured to the part described above, descends into the bowl and has the following functional features: At the top, a return passes under the overhang of the seat crown under the outlets through which the water gushes during flushing , so that this water automatically drives the used coating. -This arrangement also has the advantage of removing the coating of human orifices from stool and mixtures.

In this container part, at the level of the water in the siphon, a non-return valve opens to the gravitational passage of the excrement, then closes under their weight, avoids spurts and the rise of bad odors.

The container has, in its lower part, lateral projections intended also to catch the water during flushing and thus to reinforce the automatic evacuation.

The shapes of the water closet seats are multiple, this results in a relative diversity of the models of coverings, an embodiment is described below, by way of nonlimiting example, represented by the drawing 1/1 , in which Figure 1 is a perspective, and Figure 2 a median vertf-wedge section. The plot numbers are common to these two figures, -except the (2) visible in Figure 1 only
Disposable hygienic coating for water closet seats, made of biodegradable paper, assembled by dry stapling, comprising a horizontal part (7), radiated by grooving (2), treated on its underside by granulation (3). And a container (4), integral with the previous part, which has returns (5) under the interior overhangs of the bowl. The container (4) comprises a non-return valve (6) at the level of the surface of the water of the siphon;
The lower part of the container (4) has external projections (7). In this embodiment, the returns (5) and projections (7) are angular.

The non - return valve (6), also made of biodegradable paper, has an inverted "V" shape.

Claims (6)

 1 - Hygienic disposable covering for water closet seats, consisting of a horizontal part (1) placed on the crown of the seat, and of a container (4) integral with the horizontal part (1), which descends into the bowl of the seat, the assembly made of biodegiadable materials, characterized in that the assembly is carried out by dry stapling, or heat welding, or ultrasound, or high frequency, without glue or binder.  2 - coating according to claim 1, characterized in that the horizontal part (1) is radiated by grooving (2), or embossing.  3 - Coating according to claim 1, characterized in that the horizontal part (1) is made non-stick by granulation (3) coated or sprayed on its underside.  4 - Coating according to claim 1, characterized in that the container (4) has returns (5) under the internal overhangs of the seat bowl.  5 - Coating according to claim 1, characterized in that the container (4) comprises a non-return valve (6), at the surface of the water of the siphon of the bowl.  6 - Coating according to claim 1, characterized in that the container (4) has projections (7? In its lower part.