EP2204485A1 - Cellulose cloth - Google Patents

Abstract

A cellulosic cloth consists of a liquid absorbing cellulosic fibrous layer (1), bonded on one side to an additional other layer (2), having a different color or color pattern from the fibrous layer. The fibers of the fibrous layer are bonded together by partial pressing to compress the fibers in the pressed regions.

Description

The invention relates to a cellulose cloth, which can find use, for example, as a tablecloth or napkin.

Tablecloths and napkins are available commercially in different materials and qualities. So-called disposable tablecloths and napkins made of paper are often used for large events. These blankets are thin and their absorbency is low, they serve purely decorative purposes, d. H. to cover the table surface. Also, the protection and cleaning function in the form of a napkin is not satisfactory.

The invention has for its object to provide a particularly suitable for tablecloths or napkins pulp cloth, which is of soft product quality and is characterized by a good absorption of hydrophilic and hydrophobic substances and liquids.

To solve this problem, there is proposed a cellulose cloth which has a fibrous layer of absorbent cellulose fibers and at least one additional layer bound thereto, the further layer having a different color or a different color pattern than the fibrous layer, and wherein the fibers of the fibrous layer are obtained by partial compression under compression of the pulp fibers in the compressed areas are interconnected.

Such a tissue is characterized by a soft and supple feel, making it particularly suitable for use as a table napkin or tablecloth. Due to the fiber layer of pulp fibers hydrophilic and hydrophobic substances are particularly well absorbed and bound in the tissue cloth. Another advantage for the appearance as a napkin or tablecloth is the two- or multi-color by the further layer is colored in a color that is different from the color of the pulp fibers of the fiber layer or printed with one or more color pattern.

With one embodiment, it is proposed that the pulp fibers are pressed in the pressed areas under heat. In one possible embodiment the fiber layer and the further layer are also connected to one another by partial compression by means of heat application. The production of such interconnected pulp fibers and fiber layers or webs is described in the German patent applications DE19824825 . DE19803837 . DE19750890 and in the European patent EP1032342 described.

In a further embodiment, it is proposed that the pressed areas are embossed areas with the formation of depressions in the fiber layer. The embossed areas or depressions can be designed round or polygonal. In particular, the embossing areas or recesses in their entirety can give a decorative pattern, which is particularly advantageous in the application for the production of napkins.

• Fig. 1 eine perspektivische Darstellung eines Zellstofftuchs mit 2 Schichten
• Fig. 2 eine perspektivische Darstellung eines Zellstofftuchs mit 3 Schichten

The invention is illustrated in more detail in the attached figures. Show it

• Fig. 1 a perspective view of a cellulose cloth with 2 layers
• Fig. 2 a perspective view of a cellulose cloth with 3 layers

In Fig. 1 is an inventive pulp fabric of two layers 1, 2 shown in perspective on an enlarged thickness scale. The lower, significantly thicker layer is a fiber layer 1 of pulp fibers, optionally with a superabsorbent polymer (SAP). The layer is preferably made of cellulosic material in an airlaid process. Such cellulosic material is available inexpensively as a bulk material. In the production in a continuous airlaid process, the fibrous web is produced from a bed of pulp of cellulose pulp (fluff pulp) piled up in the air stream and, if appropriate, interspersed absorber materials. For the production of a standardized commodity one can make use of the renewable raw materials available on the market.

The method of pulping as a starting material for the fiber layer 1 allows a dry processing of the pulp fibers and thus in the subsequent connection with the other layer a good fusion of the pulp fibers in individual, d. H. Discrete embossing areas 4. Outside of such embossing areas, the fibers lie loosely together, which improves the absorbency and the flexibility of the layer 1.

The further layer 2 is substantially thinner than the fiber layer 1. The layer 2 may be formed, for example, by a web of textile, nonwoven or film-like material. It may have the same basic color as the fiber layer 1 or be different. In one possible embodiment, the fiber layer 1 and the Layer 2 of the same base color, wherein after the two layers 1, 2, one of the layers is printed in color after the two layers.

In a further embodiment, the layer 2 has a base color, which is different from the color of the preferably unbleached pulp fibers of the fiber layer 1, whereby this other colored layer 2 can be printed in a subsequent process step, for example with a pattern.

The bonding of the two layers 1, 2 after planar juxtaposition of the layers takes place, for example, in an embossing process. This results in a partial compression with compression of individual areas of the pulp fibers of the fiber layer 1 and the corresponding areas of the layer 2.

The pressing is not large-uniform, but a pressing takes place mainly in embossing 4, wherein at least in the fiber layer 1 recesses 5 form. The recesses 5 in the embossing areas 4 can be round or polygonal. In the embodiment shown here, they have the shape of truncated pyramids or truncated cones, preferably hexagonal truncated pyramids.

Because of the thin-walledness of the further layer 2, the embossing pattern produced during the pressing is also recognizable on the outside of the layer 2, whereby its design is positively influenced. In particular, the embossing regions 4 may be arranged in the manner of a pattern and in particular of a decorative pattern.

The embossing takes place between two oppositely rotating rolls, one of which is provided with the depressions 5 forming structures (are). These structures are pyramids or truncated cones protruding from the respective roll surface. In this way, an increased pressure and a high compression of the pulp fibers is achieved in the discrete embossing areas 4. Outside the embossing areas 4, the fibers lie loosely together, leaving the absorbency and flexibility of the layer 1 untouched. In the manufacture of the cellulose cloth are neither adhesives nor other binders, such. As latex required. Rather, the connection is made via the pressure and the temperature increase generated thereby. The weight per unit area of the fiber layer 1 can be between 15 g / m ² and 600 g / m ² . The basis weight is preferably between 20 g / m ² and 200 g / m ² .

Fig. 2 shows a further embodiment of the present invention, namely a cellulose fabric with 3 layers. In this embodiment, the fibrous web 1 has on both sides bound thereto further webs 2, 3 of textile, fleece-like or foil-like material. The webs 2 and 3 may consist of the same or of different materials. The webs 2 and 3 can each independently glued to the fiber layer 1 and / or welded and / or as described above with this be connected by embossing. In the embodiment shown here, webs 2 and 3 are connected by partial pressing with the fiber layer 1, this results in an embossed pattern on both sides.

A smooth surface structure is obtained, for example, when the webs 2 and / or 3 are placed on the fiber layer 1 / and the fiber layer 1 is glued to the web 2 and / or 3 in a conventional manner or otherwise connected in a planar manner. The surface structure of the finished cellulose cloth can be determined by the type of connection of the fiber layer 1 with one or two webs 2, 3. Also via the color design and pattern selection of the webs 2, 3, the appearance of the cellulose fabric according to the invention can be varied.

Another object of the present invention relates to a tablecloth made of a pulp sheet as described above.

Yet another object of the present invention, as above, is a napkin made from a pulp sheet as described above.

Napkins and tablecloths or runners made from the cellulose cloth according to the invention have the advantage that the possibilities of variation are much greater than with conventional napkins made of airlaid materials, which are only available in unicoloured. In addition, the tissue shows a significantly improved absorption of hydrophilic and hydrophobic substances, are also very soft and therefore very pleasant to the touch.

LIST OF REFERENCE NUMBERS

1

fiber layer

2

upper track

3

lower track

4

stamping area

5

deepening

Claims (15)

A cellulose fabric consisting of a fibrous layer (1) of liquid-absorbent cellulose fibers and at least one further layer (2) bound thereto, the further layer (2) having a different color or a different color pattern than the fibrous layer (1), and wherein the fibers the fiber layer (1) are interconnected by partial compression with compression of the pulp fibers in the compressed areas. A cellulose cloth according to claim 1, characterized in that the color or the color pattern is applied by printing the pressed layers. A cellulose cloth according to claim 1 or 2, characterized in that the pulp fibers are pressed in the pressed areas under heat. A cellulose fabric according to any one of claims 1 to 3, characterized in that the fiber layer on its side facing away from the further layer (2) has a further layer (3). A cellulose fabric according to any one of claims 1 to 4, characterized in that the further layers (2) and (3) have a different color or color pattern from the pulp layer. A cellulose cloth according to claim 5, characterized in that the layers (2) and (3) have mutually different colors or color patterns. Cellulose cloth according to one of claims 1 to 3, characterized in that the further layers (2, 3,) are selected from textile, fleece-like or foil-like material. A cellulose fabric according to any one of claims 1 to 3, characterized in that the compressed areas are embossed areas (4) to form depressions (5) in the fibrous layer (1). A cellulose cloth according to claim 4, characterized in that the depressions (5) are round or polygonal. A cellulose cloth according to claim 7, characterized in that the recesses (5) together give a decorative pattern. A cellulose cloth according to any one of claims 1 to 10, characterized in that the fiber layer (1) and one or more layers (2, 3) are interconnected in the embossing regions. A cellulose fabric according to any one of claims 1 to 10, characterized in that the fiber layer (1) and one or more layers (2, 3) are glued or connected in a planar manner in another way. A cellulose cloth according to one of the preceding claims, characterized in that the material density of the fibrous layer (1) is between 15 g / m ² and 600 g / m ² , preferably between 20 g / m ² and 200 g / m ² . Tablecloth consisting of a cellulose cloth according to one of claims 1 to 13. Napkin consisting of a cellulose cloth according to one of claims 1 to 13.

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