DE1504351C3 - Process for the production of a composite body consisting of webs lying one on top of the other - Google Patents

Description

The invention relates to a method for producing one consisting of webs lying one on top of the other Composite body.

A method for producing such a composite body is known, wherein an adhesive is applied selected places on one side of a foam web, a second web on this side and then both webs are pressed together. This composite body is pliable and elastic and is z. B. related to the manufacture of clothing. Because the glue doesn't on the entire surface of the foam sheet, but only applied to it at certain points there is no continuous layer of hard adhesive and the two webs may come together when bending or folding against each other, so that the product is supple and becomes elastic.

The invention is based on the object of creating such a composite body that not only is supple and elastic, but also has indentations and elevations on its surface having. The surface of the composite body is thus given a contour or an ornament, z. B. the character of a quilt. Such a one provided with a surface pattern. Composite body can be further processed into clothes and quilts. Likewise one can use it to line containers, coat walls; and use it wherever an elastic, shock-absorbing material is required, which at the same time has an attractive surface.

To solve the problem, the invention, based on the known method, provides that the adhesive is applied to below the surface of one side of the foam sheet and after the known per se compression of the foam web with another stretchable Web and at least partially curing the adhesive, the pressure is removed from the webs and the foam sheet while maintaining compression to the treated with adhesive Places on their remaining surface springs back to their original state.

The result is an elastic composite body, which has reduced strength at the areas treated with adhesive Has thickness or depressions, the size of these depressions of the strength of the compression corresponds, while it corresponds to the original thickness of the superimposed on its remaining surface Has tracks.

In an expedient development, the invention provides that a laminar material with extensibility predominantly in the direction of the short dimensions of the elongated ones treated with glue Surface sections is applied to the foam sheet.

To produce a composite body which has depressions on both sides, the invention provides before that both broad sides of the foam sheet are coated. Finally sees the invention before that a layer made of stretchable material is pressed onto the foam sheet and the compression force is decreased while this layer is still stretchable.

The invention is explained in more detail using the example of the embodiments shown in the drawing. It shows

F i g. 1 shows a schematic representation of a device for performing the method according to FIG the invention,

2 shows a schematic representation of another device,

F i g. 3 is a perspective view of a composite body produced according to the invention;

F i g. 4 shows a plan view of a pressure roller for producing the pattern in the case of the composite body according to FIG Fig. 3, '■

5 shows a partial section through a composite body produced according to the invention,

F i g. 6 schematically shows a view of another embodiment of a pressure roller,

F i g. 7 schematically shows a section through a foam web after the adhesive has been applied and

F i g. 8 is a view similar to FIG. 7 in the final state of the composite body.

The method can be easily understood using the example of FIG. 1. A foam sheet 10 from z. B. Polyurethane foam with interconnected pores 11 lies on a carrier layer 12, which expediently consists of a textile fabric or another material. Layer 12 is preferred air-permeable in order to facilitate rapid drying of the foam web 10.

Both webs 10 and 12 are fed by a nip 14 between the rollers 15 and 16 accomplished. The roller 15 is an engraved roller which is wetted with an adhesive 17, which through a stripping plate 18 is applied. In this example, the adhesive contains a color that starts with the foam board 10 contrasts.

The roller 16 is a cylinder with a smooth surface made of metal or rubber or covered with rubber Metal. The support roller 16 can, if this is desired for surface ornamentation, a be engraved roller similar to roller 15, either similar or contrasting Pattern is engraved. Both rollers 15 and 16 are driven synchronously.

The surface of the roller 15 contains recesses 19, 20 and 21. Each recess is with the Adhesive 17 filled, the z. B. runs into the recesses 19 by capillary action. When performing of the web 13 through the nip between the rollers, the recesses 17 are filled with adhesive gradually brought into pressure contact with the web 13, starting at position 22, wherein the adhesive is stored in the foam sheet 10 at positions 23 and 24. The depth of this Wise stored adhesive corresponds to the depth of the recesses in the roller 15. The depth, to to which the adhesive penetrates the foam web 10 and impregnates it, varies between the Pressure points 22, 23 and 24, but at each point the adhesive penetrates transversely into the depth of the web.

It can be seen from the wetted pressure points 26, 27 and 28 that these are relatively straight lines that run across the path 10.

After the adhesive has been applied, it is at least partially removed by a suitable device brought to hardness. Is the adhesive z. B. in a volatile carrier or a solvent The adhesive is stored when the web 13 is transferred over a heater 29 for expelling at least part of the solvent is curable, and that

3 4

The product is ready for the next step. are wetted. For example, the adhesive is 217

Some glue then becomes sticky. by a stripping pawl 218 onto the roller 215 and

The web 13 is then applied to a printing device on the roller 216 by partially immersing it

fed, for example two nip rollers 29a and 29b, applied to a container 211 , the over-

, which include a nip between them, 5 shots removed with a further scraper 212

which is narrower than the normal thickness of the web 13 . will.

This second compaction of web 13 after the surfaces of rollers 215 and 216 contain-

Adhesive 17 is made curable, sets the strength of the th recesses 219. In these, adhesive 217

Train down. In those areas where the back-

Adhesive applied, keep the selected io kept.

th sections at their compacted state, and when the web 210 is passed through the

the unselected areas spring due to the pinch point 214 between the rollers

their elasticity back to their original strength. Recesses 219 gradually follow the path 210 in

This creates a certain contour on the web, brought pressure contact.

15 The recesses store adhesive in the

worn adhesive. To prevent, foam sheet 210 , essentially

that the wetted surfaces of the web 13 on the as explained with reference to FIG.

Pinch roller 29 a stick, it is sufficient, The pattern on rollers 215 and 216 can

this roller to cool with the usual adhesives, be identical to each other, and both rollers will

preferably driven to a temperature below 21 ° C. 20. The same or can be used on both rollers

After passing through the rollers 29 α and various patterns to be engraved.
29 b sweep only those sections of the web which, after the adhesive has been applied, are free of adhesive, made fully curable to their original at least partially. In Fig. 2 strength is back, while the foam cells in the for this purpose an oven 229 with openings 231 and 232 for surfaces coated with adhesive in the deformed entry and exit of the web 210 .
The web 210 is then fed to two nip rollers 233 of the thickness of the plate in these areas 33 and 234 , which cause a nip between them, which include a certain dimension

A second web 34 is thus over the web 13 below the normal thickness of the web 210 ,
sets that it adapts to their contour. 30 The rollers 233 and 234 also serve to Aufin many cases it is desirable that the web 34 lay the webs 235 and 236 is stretch runs on the top at least in one direction, so that or underside of the web 210. The webs 235 and they are better located to the contour of the web 13 adapts. In 236 , a knitted one is advantageously supplied from the supply rollers 237 and 238 to such a case. Drag rollers 241 and 242 control the fabric used. 35 Tension in the railways.

It is desirable that the adhesive 17 also The second compaction of the webs 210, 235 and

the track 34 connects with the track 13. For example 236 decreases the strength of web 210 at the

the web 34 in Fig. 1 is nipping point of the rollers 233 and 234 via a guide roller and causes

35 is fed to an overlay roller 36 , which rolls the web 34 that rolls the fabric webs 235 and 236 on the foam onto the web 13 and exerts sufficient pressure to adhere 40 fabric web 210 in those areas 220 to cause the two webs to adhere to the adhesive 217 are coated. The rollers ken. The roller 36 may for ease of use 233 and 234 are preferably heated. The heating must be heated. the rollers 233 and 234 facilitate the adherence of the

Of course, additional adhesive can be added to the fabric sheets 235 and 236 on the foam sheet

Attaching the web 34 to the web 13 uses 45 210. The heating is carried out e.g. B. electrical or

be what such an adhesive between the by steam. The roller temperature is z. B. at

Passage under the roller 29 a and under the roller 120 ° C or, more generally, in the range between

■ 36a sprayed on the surface of the web 13 65 and 175 ° C. In many cases it is advisable to

will. the fabric overlay when passing between the

A support roller 36 b acts with the roller 50, rollers 233 and 234 more strongly than the foam web

36 a together. The between the rollers 36 a and to be heated. This improves the adhesion. The b in 36 by passing the composite is therefore overall the pads 220 deposited adhesive bemäß the pattern of the pressure roller 15 is contoured and acts in that the walls of the cells of the foam carries in accordance with this contour, a web 210 adhere to each other and permanently deformed fabric overlay 34. In some cases, can stay 55. Accordingly, after the fabric 34 , these areas become partially transparent and the adhesive passes between the rollers 233 and 234 17 to be colored. no longer show their original strength, and than

In the device according to FIG. The result of both sides of the foam is that the web 12 is previously deformed onto the foam web 210, 235, 236 according to a pattern, the web 10 is applied and that the thickness of both is achieved by the pressure rollers 215 and 216 aligned webs in relation to the fabric overlay 34 correspond to the respective patterns.

is dimensioned so that the contour effect on the i appealingly decorated composite can be

Upper side of the finished composite predominates. thus with the device according to FIG. 2 manufacture,

Contour effects on both sides with z. B. the imitated quilt-like material

the device shown in Fig. 2 is achieved. In 65 Fig. 3.

F i g. 2 is a foam sheet 210 between. 3 removes, the quilting

Rolls 215 and 216 performed. The rollers 215 cover-like composite body 310 made of an open

and 216 are engraved rollers coated with adhesive 217 porous elastic plate 311, e.g. B. made of polyurethane

foam, which is inserted between corresponding layers 312 and 313 made of cloth material. Knitted Textile fabric is particularly useful because it is elastically stretchable and follows the scheme of the Adjusts depressions 314, which give the quilt effect in the composite body 310.

Fig. 4 shows one form of a platen which is for producing the material according to FIG. 3 is suitable. The roller 320 has a cylindrical surface 321 with depressions 322 which form a pattern with a grid-like structure.

While the in F i g. 2 and the corresponding method shown with the immediate Applying the adhesive to the foam sheet may be advisable in some cases be to wet the fabric overlay with the adhesive that is then applied when the Fabric and the foam sheet is applied to this so that essentially the same Result as in FIG. 2 entry.

F i g. FIG. 5 shows an embossed composite body 50 which, for example, can be used on the device shown in FIG can be produced and recesses 51 and 52 has. A surface sheet 53 consists of one knitted or woven material or from a plastic film, e.g. B. made of polyethylene or a Vinyl layer. In a preferred form, the material is extensible to provide deep contouring the layer plate to facilitate. The base layer 54 is applied before or after the deformation process attached or attached. It can also be omitted.

To produce the composite body 50, the adhesive is first applied in the manner described above applied. The adhesive contains a color component only in the case of a transparent web 53. the Tracks 50, 53 and 54 can be connected to one another in the manner described above.

As in Fig. 6, the platen 61 has long projections 62 and short projections 63, to take up adhesive 64 from a rubber roller 64 a. When the foam web 65 the nip between rollers 61 and 66 applies the adhesive at 67, 68 and so on.

The longer protrusions 62 receive less adhesive, while the shorter protrusions 63 absorb a larger amount, so that essentially the same result as with the device according to Fig. 1 is achieved. Various other types pressure rollers can be used to apply the adhesive.

F i g. 7 shows a cross-section of a base layer 70 carrying a foam sheet 71 having a Has surface portion 72 which extends over the entire depth of the foam web, and another wedge-shaped portion 73 or adhesive attached to another selected area is applied. The layer is heated after the adhesive has been applied, as shown in Fig. 7, making the adhesive sticky, and then passed through a cold nip. After the shape recovery, the result in FIG. 8 composite body shown. Here the one points to the base layer 70 attached foam sheet 71 a compacted Surface portion 72 ', which corresponds to the printed surface portion 72, and a another beveled surface section 73 ', which generally corresponds to one of the pressure surface 73 Has contour. This allows contours of the desired slope as well as depth to be formed and in the reproduce substantially in an overlying layer (not shown). Figures 7 and 8 illustrate hence the way in which the depth and slope of the contour are influenced by the density of the adhesive applied with the roller 15 can be determined.

The composite body produced according to the invention is not only useful as a decorative material, but can also be used as a heat and sound insulator, e.g. B. on the walls of aircraft cabins, in motor vehicles, on room walls, as a housing lining, as a bed cover, on items of clothing and in other cases where decoration or insulation or both are desired is. In the case of automobile linings, its flexibility and elasticity greatly facilitate installation, -by untrained workers. Fire retardant or other coatings can be applied to its outside apply either before or after the treatment according to the invention, if such an application does not adversely affect the properties desired for the end product.

Claims (4)

Patent claims: 1. A method for producing a composite body consisting of one on top of the other webs, wherein an adhesive is applied to selected locations on one side of a foam sheet, another strip is placed on this side and both strips are pressed together, characterized in that the adhesive extends below the surface of one side applied to the foam sheet and after the known compression of the Foam sheet with another stretchable sheet and at least partially curing the The pressure of the adhesive is removed from the webs (and the foam web under Maintaining compression at the adhesive treated areas on their remaining surface springs back to its original state. 2. The method according to claim 1, characterized in that a laminar material with Extensibility predominantly in the direction of the short dimensions of those treated with glue elongated surface sections is applied to the foam web. 3. The method according to claim 1 and 2, characterized in that both broad sides of the Foam web are coated. 4. The method according to claims 1 to 3, characterized in that a layer of stretchable made material pressed onto the foam sheet and the compression force decreased becomes while this layer is still stretchable. 1 sheet of drawings