DE2148401A1 - FILLABLE HOLLOW ITEMS MADE OF FABRIC COATED WITH RUBBER OR RUBBER SUBSTITUTES - Google Patents

Description

HETZELER AKTIENGESELLSCHAFT, MUNICH

. £ 148401

Sept. 22, 1971 PA 10 404 Kl / Pr

"Fillable hollow articles made from rubber or rubber substitutes coated fabrics "

The invention relates to fillable, flexible hollow bodies made of coated with rubber or rubber-like products Fabrics, in particular gas or liquid mattresses composed of upper and lower webs, gas storage tanks, pneumatic pressure hulls, lifting cushions, gas cushions, pneumatic runners and documents, technical Hollow articles and the like, with the upper and lower web opposing the filling pressure between them extending funds are held.

In known articles of this type, which consist of a coated upper web and a coated lower web exist, the distance between them and the height of the filled article will be obtained by inserting so-called grooves. These grooves are mostly streaky bands with a large or ^ -förraige »cross-section from a likewise coated fabric and in their end areas with the coatings of the upper web and Glued underside.

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It is thus achieved that the hollow bodies do not have a spherical or bubble shape when they are filled can accept. Such hollow bodies equipped with grooves are mostly used as air mattresses for camping purposes, as mattresses in the true sense, as documents or storage organs for technical purposes or for stowing sensitive goods.

Attempts have also been made to build such flexible articles in box shape with largely flat surfaces. However, the built-in grooves counteract this endeavor, since they cause the article to be deformed in a highly visible and tangible manner with protruding ribs or bulges when in use. In order to be able to make the surfaces of these articles more flat, it has also been proposed to leave the spacing of the two tracks to individual threads, which were inserted through both tracks with the aid of sewing machines. However, this sewing is a very time consuming task, as well as the effective length is to keep the übstandsfäden very hard to match, and e is difficult to anchor the threads so that they do not change their position or their length at w occurring tensile stresses. In this way, very bumpy surfaces and hollow bodies of poor quality are usually created with great effort.

With all of the exceptions described above, it is not

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possible to produce fillable hollow articles with actually flat surfaces in the position of use.

The object of the invention is to make fillable To create hollow articles that do not suffer from the disadvantages of the aforementioned, which are in the state of use have largely flat and regular surfaces on the outside and in which the filling pressure is evenly applied to the Upper or lower web is distributed.

This object is achieved by fillable hollow articles which are characterized by a double fabric connected to both the upper sheet and the lower sheet, which has woven or plaited pile threads which determine the respective hollow article height. It is advantageous that the fabric layers of the double fabric are connected to the gas- and / or liquid-tight upper or lower coating of the hollow article fabric by gluing, welding and / or vulcanizing. In order to be able to properly absorb large internal prints, it is important that the fabric layers of the lower sheet are woven, linked or sewn. Conveniently a number and strength of the pile threads, wherein the filling pressure of the hollow article maximum claims the pile threads up to 50% of its breaking load. A solid double fabric is also obtained when the pile threads are bindingly crossed with warp threads / weft threads or the upper or lower double fabric layer. Suitably, further comprising a double fabric, are woven with the warp threads in the upper and lower weft yarns.

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The production of the double weave described above is described, for example, in the magazine "Melliand Textile Reports 7/1970". To generate non-cuboid hollow bodies (wedge mattresses ...) is a double fabric with diagonally opposite one another Fabric layers and pile threads with the slope correspondingly decreasing length are advantageous.

The further embodiment of the invention can be found in the remaining subclaims.

The invention is described below with reference to In; the Drawing illustrated embodiments explained in more detail.

Show it:

Figure 1 is a box mattress shown in section, FIG. 2 shows a section through a gas cushion, FIG. 3 shows a view of a wedge cushion,

Figures 4, 5 and 6 show examples of the structure of double fabrics,

Figures 7 and 8 show details from the previous ones Characters.

The box-shaped mattress according to Figure 1 consists of an upper web 1 and a lower web 2, of which each in turn consists of a fabric 3 (only its cut warp threads are shown) and a gas- and liquid-tight coating on the underside composed. Laterally, the upper web 1 is connected to the lower web 2 via edge parts 5, which

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also on the fabric 3 with the coating 4 exist. Inside the hollow article, a double fabric is inserted between the two coatings 4, which consists of an upper and a lower fabric layer 6 and 7 and pile threads 8 connecting them. the Pile threads 8 are woven or plaited into fabric layers 6 and 7. The fabric layers 6 and 7 can ■ be connected to the coating 4 by gluing, welding and / or vulcanization. Is conceivable theoretically also that these tissue layers with de Fabrics are connected by weaving, knotting or sewing.

The gas cushion according to FIG. 2 is constructed similarly to the hollow article according to FIG. 1, but the '

Edge inserts 5. These are not necessary here, since an upper web 11 is connected to a lower web 12 in the edge area thereof by gluing or vulcanizing the coatings 14 directly through a beard seam. In the interior of the gas cushion there is again a double fabric 6,7,8 in the manner already described classified, which determines the shape of the gas cushion when it is full. For the sake of simplicity, are again only the warp threads of the fabric are shown.

Fig. 3 shows a wedge-shaped cushion or pad

Mattress 20, the structure of which is a combination of the characteristics of J the hollow article described above contains. The mattress 20 consists of an upper web 21 and one Lower sheet 22, which are connected laterally by triangular side parts 23 and at the front by a front part 24. In the area of a rear strip 25, the upper web is directly connected to the lower web. Inside the Mattress 20 is classified as a double fabric that connects the upper web to the lower web when the mattress is full keeping the correct distance. This double weave will be described below.

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The double fabric constructed according to Fig. 4 consists of two fabric layers 30 and 31 in which e.g. four weft threads (A, B, C, D) assigned to one another are. With the fabric layers 30 and 31, pile threads 32, 33 of the same length are interwoven, which as Warp threads are provided in the actual fabric and by the optional entry above and below keep the distance between the layers of tissue.

The double weave shown here is for example woven with two protection and contains two different binding pile warp threads 32, 33 in an ABCD weft V bond.

The double fabric according to FIG. 5 is shown in a longitudinal section, with an upper warp 41 with a lower warp 42 is connected by pile threads 43 at a distance 44. In this double fabric there are pile threads 43 as pile chains woven in a 3/6 weft W-weave.

Fig. 6 shows a reinforced double fabric, in which pile threads 51 with a high thread density per unit area are woven in. There are four different binding pile threads 51, again as pile warp threads, however in 3/6 weft W-weave for use.

7 shows a detail of a hollow article 60, namely the connection of a double fabric (Upper layer 61) with an upper web 62 of the hollow article 60. The upper layer 61 of the double fabric (indicated Pile threads 63) are known per se with an inside on a fabric 64 serving as a wear layer Way applied gas- and liquid-tight coating 65 connected. This connection can e.g.

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by gluing, welding and an additional vulcanization or crosslinking is heat resistant be. The coating 65 will be described below.

FIG. 8 shows a detail of the wedge-shaped hollow body according to FIG. 3, specifically a section of its interior Construction.

A double fabric 70, which consists of an upper fabric layer 71 and a lower fabric layer 72 connecting them Pile threads 73 is composed, is in the manner already described between the top sheet 21 and the sub-sheet 22 classified. The length of the pile threads 73 corresponds to the wedge shape of the hollow body designed to decrease.

For the construction of the hollow body it should be added that the double fabric is expediently in the to be glued Edge areas are omitted in view of a good connection of the same.

A very important task of the hollow * according to the invention body - high pressure of space and even distribution of the forces that occur - can still be achieved by the density of the thread (e.g. ten or more pile threads per cm of double fabric) can be controlled. By increasing the thread density an improvement in the evenness of the surfaces of the filled hollow body is also achieved.

Another possibility is seen for the invention that the double fabric, or its upper and The lower layer of fabric is so strong and dense and directly provided with a coating that a

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actual upper or lower web can be omitted. Daait can be another economic step forward ■ be created it the invention.

All coating of the fabric koount expediently for Use:

natural rubber, synthetic rubber and / or other polymers or elastomers with rubber-like ones Properties such as polyisoprene, polybutadiene; Copolymers based on styrene-butadiene; also acrylic nitrile butadiene; chlorosulfonated polyethylene, polyethylene, Polychloroprene; Copolymers of ethylene-propylene-ter-polymers, from ethylene-propylene and a third Component. The products can be used individually as well as in blend qualities, it is possible to produce the internal coatings e.g. based on natural rubber or polyisoprene, while the top layers are made from a blend of natural rubber and a terpolymer ethylene propylene can exist.

As far as it is a question of crosslinkable products, the crosslinking can take place, for example, by sulfur vulcanization or also by peroxide crosslinking, furthermore by radiation crosslinking. It It is also possible to intentionally leave certain layers uncrosslinked and to crosslink others, e.g. around the To improve the thermal stability of a bond.

Uncrosslinked plastic compounds with rubber-like properties can also be used, such as plasticized compounds PVC, copolymers of ethylene and vinyl acetate.

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The connections between the double fabric and the coating can usually be achieved without any special measures, since the individual components are combined in a state in which the rubber is still uncrosslinked and therefore usually has self-adhesive properties. The bond is made heat-stable by subjecting the made-up article to heat, possibly also to pressure , as a result of which the masses are crosslinked, ie vulcanized, in a known manner.

For the production of air mattresses or other pneumatic or liquid-filled devices In systems, rot-proof textiles are expediently used.

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Claims (15)

METZELER AKTIENGESELLSCHAFTj MUNICH ' Sept. 22, 1971 PA 10 404 Kl / Pr. Claims Ί.) Fillable hollow articles made of fabrics coated with rubber or rubber-like products, in particular gas or liquid mattresses composed of at least one upper and one lower sheet, gas storage tanks, pneumatic pressure bodies, Lifting bags, gas bags, pneumatic runners and pads, technical hollow articles or the like, the top and bottom webs opposing the filling pressure by means extending between them are held, characterized by a connected to both the upper web and the lower web Double fabric, the woven or plaited pile threads that determine the height of the hollow article having. 2. Hollow article according to claim 1, characterized in that the fabric layer of the double fabric with the gas and liquid-tight upper and lower coatings of the hollow article fabric by gluing, Welding or vulcanizing are connected. 3. Hollow article according to claim 1 and 2, characterized in that the fabric layers of the double fabric are connected to the upper or lower sheet by a self-vulcanizing adhesive. 30981 4/0099 - * - 2U8401 4. Hollow article according to claim 1 and 2, characterized in that the fabric layers of the double fabric are thermally stable connected by an adhesive containing a vulcanization or crosslinking agent with the application of heat with the upper or lower web. 5. Hollow article according to claim 1, characterized in that the fabric layers of the double fabric are woven, linked or sewn with the hollow body tissue. G. hollow article according to claims 1 to 5, characterized in that the pile threads with warp threads / Weft threads of the upper or lower double fabric layer are bindingly crossed. 7. Hollow article according to claims 1 to 6, characterized by a double fabric in which Warp threads are woven into the top and bottom wefts. 8. Hollow article according to several of the preceding claims, in particular with inclined surfaces, characterized by a double fabric with fabric layers running diagonally against one another and with pile threads _# which decrease or increase in length. 9. Hollow article according to claims 1 to 8, characterized by a double fabric with in the raw material and in the strength optionally different warp threads, weft threads and pile threads. - 3 309814/0099 2U8401 1Ζ 10. Hollow article according to claims 1 to 7, characterized by one made of a yarn woven double weave. 11. Hollow article according to claims 1 to 10, characterized in that the double fabric a woven fabric, a scrim of yarns, threads twisted, cord is for its production wholly or partially endless material, such as z. B. rayon or fiber yarn was used. 12. Hollow article according to claims 1 to 11, characterized by a double fabric, consisting of natural fibers such as cotton, hemp, silk or the like and their Mix. 13. Hollow article according to claims 1 to 11, characterized by a double fabric produced made of synthetic silks or fibers based on polyamides or polyester (Polyterephthalic acid ester), polyethylene, polypropylene, polyvinyl alcohol or from P combinations of these substances. 14. Hollow body according to claims 1 to 11, marked is characterized by a partially or entirely Double weave consisting of glass fibers, metal fibers or rayon. 15. Hollow article according to several of the preceding claims, characterized in that the Double fabric is coated gas, air and / or liquid tight and without additional upper and sub-webs can be used to form a hollow article. 3098U / 0099