DE1817233A1 - Process for the production of a reinforcement tape and a roll from this tape for use in the production of textile-reinforced, rubber-like articles - Google Patents

Description

1219

PATENT AGENCIES, 1817 ^ 33

DIPL.-ING. F.THIELEKE, _ _γ _ _ _{FR | CKE} DR.-INQ. R. DÖRING DIPL.-PHYS. DR. J. FRICKE

BRAUNSCHWEIG MUNICH

Uniroyal, Inc., 1230 Avenue of the Americas, New York , UY 10020, USA

"Method of making a reinforcement tape as well a roll from this tape for use in the production of textile-reinforced, rubber-like articles "

The invention relates to a method of forming a reinforcement tape roll of at least two essentially non-twisted or twisted multifilament yarns, the Reinforcement tape for use "for the manufacture of textile-reinforced Tubing is suitable and the winding has a winding core on which several layers of the tape on top of each other are wound up. The invention also relates to a

Wrap, which is formed from such a reinforcement tape and finally a hose, in particular a high-pressure hose, which consists of a rubber-like inner tube or hose, a Layer of textile reinforcement tape bound over it and a second rubber-like tube surrounding this layer or Hose is made.

When forming fabric inserts for rubber articles, in particular Tubing, it is common to have a plurality of twisted or twisted tubes to use multifilament yarns that are used to form the

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Reinforcement fabric layer either wound spirally or be braided around the hose,! typical of the The type of yarn used for this is industrial yarn that is twisted or twisted. Ser-like yarns have two up to three turns per 2.5 cm length. The twisting or twisting of the yarns becomes a number of different ones: Purposes carried out. First, it is achieved that the individual threads from which the yarn is formed, in front of a Splicing or separation are protected when the yarns are produced in the manufacture of the hoses when they pass through the machines be treated. In addition, the twisting also leads to that the yarn strength is on a small sewing area is concentrated.

However, the use of twisted or twisted yarns has also created a number of serious problems. For example, it is common to feed the twisted or twisted yarns in single, double, triple or quadruple feed use. This means that the braiding machine must be equipped with spools or a winding on which the twisted or twisted yarns are wound either individually, in pairs, three or four times as required. If two or more yarns are applied to the package, they will not be connected to each other. It has However, it was found that numerous errors occur in the subsequent braiding work, especially the 16s solution the ends of the twine, and that this in turn results in unequal

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shaped Garnsciiicliten, loose garage layers, howling and loose gantends, loops in the yarn and bad shapes the wrap surrendered. It also happened that the ends of the yarn fell off the coils, that the yarn telescoped pushed off the coils, etc. However, these errors ultimately also led to damaged hoses being produced so that production losses occurred. In fact, it had to have the entire hose manufacturing facility or plant be shut down in order to eliminate such errors, so that considerable costs due to idle times of the machine equipment had to be accepted.

Another problem that arises with the use of twisted or twisted multifilament yarns is obtained at the manufacture of high pressure hoses. With these hoses the use of the yarns leads to the occurrence of a wicking effect. It has therefore become common to use the twisted or to treat twisted multi-ply yarns with a binder, to allow the yarns to be glued to the subsequent rubber material. However, it has been shown that too such a treatment is limited solely to the surface of the twisted yarns. So this came about Problem that with Hoehdruükschläuchen, which is made through tissue the said yarns are reinforced, gasfenter pressure, viz dQcht-like, through which yarn migrates and promotes hindurah can be. This process, however, in turn leads to

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stand for a separation and separation of the individual. Layers of tubing. Details of this wick effect are described in detail in the publication "Rubber World" from September 1967.

The invention intends to overcome the difficulties encountered heretofore when producing the fabric reinforcement of rubber-like articles, in particular hoses.

To achieve the above-mentioned object, a method for forming a reinforcement tape roll for the reinforcement of rubber articles, such as hoses, according to the invention in that at least two are essentially non-twisted or twisted multi-filament yarns are impregnated with a polymeric binder, which bonds the yarns with each other as well as with a subsequently applied rubber supply, the yarns with the binder on drier Base, calculated in an amount of at least $ 10 des Weight of yarn, impregnated and then essentially laterally side by side, parallel and coplanar oriented with their Side edges brought into mutual contact and, while the binder is still moist, wound onto the core to form the lap and the binder is then dried to wrap the yarns at their touching edges to form the ribbon and joining the successive layers of the tape so formed to one another, thereby binding the individual

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Tape layers is chosen so that the outer layer is light is detachable from the one below.

The wraps made of reinforcing tape that can be produced in this way are characterized by a very high degree of dimensional stability and have a no tendency to telescope-like pushing off individual layers. The reinforcement tape itself has a high one Tensile strength, and finally the outermost layer of the tape is again very slightly different from the next one below Removable layer.

To achieve the object on which the invention is based, a high-pressure hose made of rubber is also identified a dextile reinforcing layer, which is made from the reinforcing tape designed according to the invention by braiding or Spiral winding or the like. Is formed. One of those High pressure hose has a rubber inner tube or hose, a layer of reinforcement fabric and a second rubber hose or a second rubber tube wrapped around the reinforcement layer, the reinforcement tape in the form of a braid or in the form of a spiral winding or the like, but with a polymeric binder is impregnated so that the inner or outer tube is made of rubber can be vulcanized together with the binder and on this way a tough, unbreakable connection of the reinforcement layer with the two rubber pipes,

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The invention is explained below with reference to the examples shown in the drawings.

. 1 shows a perspective schematic view of a partially sectioned device for carrying out the invention trained procedure. .

Fig..2 shows a single multi-filament yarn in essence not twisted or twisted condition, in which no more than half a turn per 2.5 cm is provided is.

Pig. Figure 3 shows a reel of reinforcement tape in which Adjacent layers of the tape are detachably connected to each other and with four individual yarns at the end of the Band, which are partially detached from each other.

Pig. 4 shows a partial sectional view of a high-pressure hose, which is produced by means of the belt designed according to the invention.

Reference is now made to FIG. In Fig. 1 is a schematic view of the device is shown, the implementation of the method designed according to the invention is used. This device initially has a plurality of containers 10, each of which picks up a spool on which a multifilament yarn is wound, the essential property of which is that it is not twisted or twisted

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twists dst. (The bobbin with the thread wound on it is not shown.) Loosening eyes 12 and 14, a container 16 with a bath 18 made of a polymeric binder, guide eyelets 20 and 22, a slotted luhrungsöse 24, a tensioning device 26 and a reciprocating yarn guide device 28 and a winding core 30 complete the device.

It has been found that it is essential that the multifilament yarns can essentially be described as not twisted or twisted. The expression "im essential not twisted or not twisted "should be expressed that the twist or twist from 0 to a maximum of 1/2 turn per 2.5 cm of yarn length. This term is used for the following description as well as including the designation used in the claims. A yarn that in the context of the invention is not considered to be twisted or twisted, is in fig. 2 shown. Yarns that are essentially neither twisted nor twisted are, oddly enough, called twist by the manufacturer. This expression is intended to mean that no additional Twisting or twisting of the yarns is carried out by the manufacturer himself after the production.

Reference is again made to FIG. 1. It is recognizable,

ORIGINAL INSPECTED

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that four separate yarns 32a, 32b, 32o and 32d are taken from bobbins which are received in the containers 10a, 10b, 10c and 1Od will. These yarns are passed through four openings in the eyes of the guide eyes 12 and 14. It's closed note that the yarns are datri. at intervals and parallel to each other be guided. The yarns are then fed into the bath in container 16. Every single yarn runs through it below a guide rod 34, which is attached to the inside Walls of the container 16 is attached. Three spaced separating plates 36 are attached to the guide rod 34 arranged, which have the tasks of pulling the four yarns from- to keep each other separate. This design ensures that no errors occur if the yarns during their Immersion through the bath. This will ensure a careful impregnation of the yarn with a polymeric binder guaranteed within the bath.

After the bath, the yarns are first led out and passed through openings in the guide eyes 20 and 22. Following this, the yarns are brought together, through the slotted guide eye 24. This is used to collect the yarns and bring them into a parallel position next to each other.

The four yarns are then passed through the tensioning device 26, which is used to adjust the tension of the yarn.

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same and regulate. At the same time it has the task

to arrange the yarns in the form of a ribbon or strip in which the individual yarns are arranged essentially coplanar are. ·

The four yarns are parallel coplanar in that shown Arrangement summarized and passed in this state by the reciprocating guide device 28 and are wound onto the winding core 30 by this. It is of particular advantage if the reciprocating yarn guide device has a rectangular duct cross-section, whose inner clear width corresponds essentially to the sum of the width of the "four yarns or slightly greater than the total width is measured. ' By using one of the type formed cross-section for the yarn guide eyelet, the yarns are arranged again so that they have their flat, parallel, coplanar arrangement, in which the edges of the neighboring yarns touch each other, are maintained-

Maintaining mutual contact is special Significance, because namely the yarns after impregnation with the polymeric binder and after winding on the Winding core are still wet. This ensures that, after a subsequent drying, a layer of impregnated tape is light is tied or glued on by the binder, so that a gluing with the underlying or overlying

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and adjacent layers * of the tape occurs. Drying leads Of course, there is also an intensive connection between the edges of the individual yarns that make up the ribbon "occurs. So results a wrap made of a reinforcement tape that has a firm, dense contour and maintains its shape. A such a winding is completely firm against a telescopic pushing off of individual layers. He's also not prone to Looping. The roll is also designed so that the outermost tape layer is slightly different from the next one below can be deducted.

Although the foregoing description illustrates the use of four yarns, it will be understood that other numbers of yarns are used can be. In general, however, it has been found to be advantageous if between two to twelve yarns be used; because no particular advantages can be achieved if more than twelve yarns are used becomej although this is not excluded according to the invention. However, three to four yarns are preferably used.

Examination of the multi-filament yarns that can be used to form the reinforcement tape shows that it is It is essential that the threads of these yarns are continuous are. The composition of the threads of the yarns can be varied as desired, depending on the desired properties of the fabric reinforcement to be produced

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ten rubber items. For example, any known continuous load can be used, whether it is from syarfchetisehern or natural Material is to be used. Examples of materials for forming the threads are polyamide or polyhexamethylene adipamide and called polykaproamid. It can also polyesters, such as ethylene terephthalate polymers and their copolymers can be used. Acrylic polymers and copolymers, for example polyacrylonitrile, be used. The load of the yarns can also be vinyl polymers, such as "for example polyvinyl alcohol, Be polyvinyl chloride and polyvinylidenic chlorides, fluorinated ethylene polymers, such as polytetrafluoroethylene, can also be used. The use of polyhydric hydrocarbons, such as linear polyethylene, linear polypropylene and copolymers of ethylene with other polymerizable monomers is possible. Regenerated cellulose, cellulose acetate, polyurethane or the like can also be used. Suitable for The reinforcement tape designed according to the invention is also manufactured from yarns made from natural products such as silk and glass or the like

A particularly suitable material for the formation of continuous loading is a two-material loading made of polyamide and Polyesters, e.g., hexamethylene diamine adipic acid polycondensate "polyesters (often referred to as ^ mixed thread). Such, two- : r - - -12-

Substantial threads are commercially available. For example, they are available from Allied Chemical under the trade name EF-121 manufactured. In general, such threads are obtained in such a way that first polyamide and polyester, i. ie hexamethylenediamine adipic acid polycondensate and polyethylene terephthalate melted and mixed, and thereafter the melted mixture thus obtained is extruded in the form of a thread will. Such mixed threads or fibers generally contain 50 to 90% polyester by weight. Such bi-material Threads are described in more detail in the April 16, 1966 issue of Chemical Week on page 55. Further information can be found in the publication "Chemical and, Engineering News" of September 5, 1966 on page 57A.

With such two-material threads made of hexamethylenediamine-adipic acid polycondensate and polyester can be both hexamethylenediamine-adipic acid polycondensate as well as polyester form the continuous phase. It seems, however, that in the case of two-material Threads in which polyester is at least 40% by weight of the thread, the polyester portion continuous phase forms, while with proportions of less than 40 $ polyester, hexamethylenediamine-adipic acid polycondensate represents the continuous phase. It has been found that particularly advantageous results are achieved * if a two-material thread made of hexamethylene diamine adipic acid polycondensate polyester is used, in which hexa-

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methylenediamine-adipic acid polycondensate in an amount of about 70% by weight and polyester in an amount of about 30 weight- ^ is included.

If the reinforcement band formed from several yarns, which is designed in the manner described, for the production of γόη high pressure hoses or similar textile-reinforced If rubber articles are provided, it will be apparent that the nature of the polymeric binder in bath 18 is chosen should be that a gluing of the tape with the subsequently applied rubber materials is possible. So are in fact water based or organic Solvent-dissolved baths, which are known in the art, are suitable for roping or loading in preparation the subsequent gluing of the rubber material. Such baths can be used as leaching medium for the Yarns can be used to form the reinforcement tape-r The laughing man can very easily find a number of suitable baths for a given thread material.

For yarns made from artificial silk fibers, hexamethylenediamine adipic acid polycondensate threads or two-material hexamethylenediamine adipic acid polycondensate polyester threads, in which hexamethylenediamine-adipic acid polycondensate represents the continuous phase, it is particularly advantageous if a solvent bath is used, which is called

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tion "Rn ^ solution bath is known and an aqueous resorcinol-IPormaldehyde ^ rubber latex represents. Examples of such "RFI" solution baths are found in US Patents 2,128,229,

2 128 635, 2 429 397, 2 561 215 and 2 615 826. Further information can be found in the publication "Rubber World" Torah October 1954 on page 126 and from September 1957 on pages 847 to 851.

If glass threads are used to form yarns, then it is advantageous to use solvents that are particularly suitable are to enable the bonding of rubber with glass fibers. Examples are in the US patent

3 029 589.

If the thread material for the yarns is polyester becomes or if two-material polyamide-polyester threads are used, with polyester being the continuous phase, then it is advantageous in the so-called Second immersion technique to work covered in the Belgian patents Scripture 696 860 is described.

A preferred way of enabling an excellent adhesive bond with subsequently applied rubber supply and the yarns, If the yarn is made of polyester threads or polyester-hexamethylenediamine-adipic acid polycondensate shutters consist in which polyester is the continuous phase

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represents, firstly in that firstly the threads are immersed in an aqueous slurry of a phenol-blocked isocyanate in which water-soluble epoxy resins are dissolved, after which drying takes place at temperatures around 180 ° for a period of 2 minutes and that secondly, the dried yarns are immersed is made in an aqueous solution of a bath with resorcinol-formaldehyde resin, which additionally contains a latex of a terpolymer butadiene, vinylpyridine and styrene. This treatment is followed by winding the yarns, while still wet, onto a winding core in order to form the winding. Then followed by a further drying at about 180 ⁰ C. TJM to achieve good bonding results, it is advantageous if a methylene acceptor is incorporated into the solid rubber material, which is applied after the formation of the fabric reinforcement for the tube formation, for example, in the form methylated Mtroalkanes or can be based on resorcinol. This creates a very good connection with the threads of the yarn. This type of procedure is described in detail in the corresponding patent application Serial-No. 617 808 of February 23, 1967.

It is apparent, however, that known chemical vulcanizing compounds can be added to the solid rubber supply in order to improve the connection in a known manner Rubber with the reinforcement consisting of several yarns

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band to reach.

After the yarns impregnated with polymeric binder are wound onto the winding core while the binder is still wet and the winding has been formed, it is subjected to drying. The drying conditions can be changed within wide limits. For example, higher temperatures can be used with shorter drying times. For example, a temperature of the order of magnitude of 400 ^° C. can be used with a drying time of only a few minutes, while drying can be carried out just as well at room temperatures, the drying time required then being several days.

An important aspect of the invention is the discovery that the amount of solids pickup of the yarns from the bath is substantial must be bigger than before. So far has been used to prepare yarn for the production of fabric-reinforced Rubber hoses using twisted or twisted multi-ply yarns prepared by treatment in a solvent bath. The immersion of these twisted or twisted ' Twisted yarn in the solvent bath leads to a solids absorption of about 4 to 7 $ of the weight of the yarn, calculated on the dry substance of the binder. The amount of solids pickup was essentially due in large part determines the geometric shape of the yarn. That means,

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that the twisting or twisting of the yarns led to relatively solid yarns with a circular cross-section, which resisted impregnation with the material of the solvent right into the interior of the yarn bundle. Instead, the surface was almost exclusively coated with solids from the solvent bath. This resulted in the above-mentioned solids absorption in the order of magnitude of 4 to Tfo and this value had to be accepted. Likewise, the resulting bond strengths between the yarns treated in this way and the rubber material stocks applied during hose production also had to be accepted.

By using yarns that are essentially as can be called untwisted or untwisted, results a solids absorption from the impregnation bath, the at least 10 $ of the weight of the yarn, calculated on the dry matter of the impregnation binder. This uptake of solids is much higher than before. By using of yarns which are essentially untwisted or untwisted, and in that these yarns through an impregnation bath are guided, there is a continuous impregnation with polymeric binder, which extends into the interior of the yarn runs so that essentially every single paser or every single thread of the yarn is impregnated. So results the relatively high solids uptake in the order of magnitude of at least $ 10 of the weight of the yarn, which is very easy

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Way can be achieved. The impregnation of all yarn cross-sections with the polymeric binder leads to a considerably improved adhesion between the reinforcing tapes, the formed from such yarns and the rubber layers applied to such tapes.

The amount of polymeric binder used to impregnate the Yarns should advantageously be used is, calculated on the dry substance of the binder, about 10 to 25 weight- ^ and in the best case it should be between 12 to 15 $ of the weight of the thread. About these solids uptake values it is advantageous to use a solvent bath, in which the polymeric binder is contained in a high concentration, i.e. at least 10 to 40 percent by weight is. It is more advantageous if the polymeric binder is contained in the bath in the range between 12 and 25% by weight.

As stated earlier in this description, the flat multi-yarn yarns are used Bundles in that they are dried while still wet after soaking with polymeric binder, through the Effect of the binder at their contiguous edges connected bands united. This drying process also serves to create a weak connection or bonding process (based on the polymeric binder) of an already existing one Layer of tape with adjacent layers or

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Layers of tape above, below or next to it to accomplish. This leads to the formation of tight wraps that are able to maintain their shape and size.

One such wrap is in Pig. 3 shown. This wrap is tight or firm and completely resistant to it a telescopic pushing off of individual parts, and yet the free end of a belt 38 can very easily from Windings are withdrawn, as is the case for braiding or spinning or spiral wrapping of a hose or Like. Is required if the fabric reinforcement is to be created. It should be noted that the belt 38 in the shown Ausfübriingsbeispiel consists of four yarns 32a, 32b, 32c and 32d, some of which are shown separately from one another in the Pigur are. However, this representation only serves to clarify or separate the individual yarns in order to illustrate3 that the ribbon is a body consisting of four individual yarns. In practice, however, the ends become solid united with each other by the action of the polymeric binder.

It should be mentioned that the inventively designed, from tape consisting of several yarns can essentially be regarded as a body with a rectangular cross-section, the width of which is about at least twice, but essentially several times the thickness of the individual yarn. Typical Tapes of the type designed according to the invention, which are used for

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braid "or formation of fabric reinforcements for hoses widths can range from 0.3 "to 4 mm have, but it must be taken into account that smaller or narrower as well as significantly larger or wider tapes can be used.

These multi-thread tapes are characterized by the fact that the individual threads that are used to form the tape tend to flatten. This is to be understood as meaning that yarns are also viewed as being essentially rectangular in cross section can be, the length of the rectangular cross-section (or width of the yarn) in accordance with the width of the belt and the height of the rectangular cross-section corresponds to the thickness of the belt. That leads to a further enhancement of the flat character of the entire band. The possibility of flattened (rectangular in cross section The use of trained yarns arises from the fact that each individual yarn is essentially non-twisted or twisted can be viewed and contrasted with the twisted or twisted yarns that were previously used in manufacture used by high-pressure hoses differs significantly. Own the twisted or twisted yarns a substantially circular cross-section.

Neither the number of threads from which the essentially non-twisted or non-twisted yarns consist

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are used to form the reinforcement tape, nor the. The fineness of the individual thread of the yarn is critical. Typical for yarns that are suitable, the following values are: Is, yarns selected from about 50 to 2000, preferably however, about 100 "to 1000, and most preferably about 150 to 400 threads exist. A value that is advantageously in the range between 1100 is recommended as the fineness for the yarns up to 4400 den. lies, although higher or lower den. can be used just as well,

The winding of the reinforcement tape in the one formed according to the invention Execution is particularly suitable for use in the production of fabric-reinforced rubber hoses or the like. The winding is, if it is produced in the specified manner, very highly impregnated with polymeric binder, which is able to bond between the individual yarns of the tapes as well as between this tape and a solid rubber material.

The production of fabric-reinforced 'rubber hoses, such as the production of high pressure hoses is carried out according to the usual methods. These differ merely differ from known methods according to the invention, that winding of reinforcement tape are used instead of the previous yarn winding. In connection with it see U.S. Patents 3,083,130; 3,296,047 and

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3,336,172, in which details of the usual procedures described for the production of textile-reinforced rubber hoses are.

In general, this procedure is such that a rubber tube or hose is first drawn over a mandrel will. This rubber tube serves as the inner tube for the finished hose. Then the textile fabric reinforcement layer around this rubber tube, either by a braiding or spinning process or by the yarn be wrapped around the rubber tube in a spiral or similar manner.

For the production of hoses designed according to the invention, instead of the yarns that have hitherto been customary, tapes are used of the type described above, which are impregnated by polymeric binder. The reinforcement tape will be in the desired Braided way over the inner rubber tube, although spiral coiling or a similar technique is also used can be. It should be taken into account that the use of a flat ribbon for braiding to form a Reinforcing fabric layer of a hose has particular advantages; because in this way it can be better or closer packing of the fabric than before with twisted or twisted yarns with circular cross-sections reach. There is also a guarantee that

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that the yarns of the reinforcement stand in the invention trained execution no tendency to separate during the braiding process "own.

Particularly suitable for hose production with use The type of reinforcement mentioned is the so-called lead jacket technique, in which the hose is surrounded by a lead jacket generated by extrusion. In connection The hose enclosed in this way is vulcanized to form the lead jacket, under steam pressure at -about 60 minutes. The lead jacket is then stripped off so that the fully vulcanized textile-reinforced high-pressure hose is obtained.

If only a single layer of reinforcement fabric is required to form the tube, then that layer is over a second rubber tube or a second rubber hose is applied and the entire arrangement is vulcanized in the usual way.

If more than one layer of textile reinforcement is required, then this is also possible. In such After the second rubber layer has been applied, which is laid over the first fabric layer, a second fabric layer is used arranged from textile material and on this one more Rubber layer applied. Afterwards daraiyk can also be used in

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vulcanized in the manner already mentioned. I am one of those Two-layer fabric-reinforced hose is shown in FIG. The hose 40 shown there has an inner one Rubber tube 42, a first reinforcement layer 44, an overlying one Rubber tube 46, a second reinforcement layer 48 and an outer rubber tube 50. Each of the reinforcement layers 44 and 48 are formed by braiding using the ribbon 38 (Pig.3). The tape is carefully beforehand impregnated with polymeric binder. After the 'hose has been vulcanized, for example using the lead jacket technique, which has already been described above, is each of the rubber layers 42, 46, 50 with the respectively adjacent one Layer of polymeric binder intimately connected, so that there is an intense solid bond with the neighboring Reinforcement layers results.

Obviously, in some circumstances hoses are needed that have three or more layers of reinforcement. In such cases, the technique already explained is continued accordingly.

As already mentioned in the introduction, the described shape of the reinforcement tape allows the achievement of a very dense, firm packing of the fabric during the lapping process, whereby the tape its flat, rectangular cross-section in the tubular carcass maintains. The braided band leads to formation

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an essentially regular, smooth profile, which clearly differs from the previously usual irregular profile, that occurs when braiding with twisted or twisted yarns (with a circular cross-section). Such irregular profiles can be caused by the appearance of hills and valleys above the smart carcass can be recognized. From it As a result, for example, couplings on hoses often only have an interrupted contact with the hose surface obtained and that there are significant sources of error in this way, because the clutches are then easily from let the hoses pull out. In contrast, the uniform packing and wrapping is achieved through use of the reinforcement tape designed according to the invention is achieved, able to maintain very tight dimensional tolerances to ensure between hose and coupling, so that a greater surface contact between the coupling pieces and the braided fabric product is created. There is therefore also a considerably reduced inclination of the hose to failures caused by the detachment of clutches or the like.

It is easy to see that the wrap of reinforcement tape, which can be created according to the invention, for the production of a large number of different high pressure hoses as well can also be used to make other types of fabric-reinforced rubber articles.

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The type of rubber material used, which are used to form the fabric-reinforced tubes or other articles, is not critical. Indeed, virtually all common types of rubber, such as natural rubber or synthetic rubber, can be used. The following examples may be mentioned: polychloroprene, nitrile rubber, SBR, butyl rubber, natural rubber, synthetic natural rubber, ethylene-propylene copolymer rubber, EPDM rubber (ethylene-propylene-diene rubber, also known as EPT rubber) , Polyurethane rubber, chlorosulfonate-polyethylene rubber, regenerated rubber and the like. It should be mentioned that the rubber used as a rubber material or stock can also be mixed with other components such as polyvinyl chloride or the like, if necessary. Such a mixture can consist, for example, of polyvinyl chloride with nitrile rubber, which is sold under the trade name ¹¹ OZO "by Naugatuck Chemical.

The following examples serve to further illustrate the invention. All quantitative data are unless expressly stated otherwise stated, to be understood as weight / t.

Example 1 :

In this example the device according to FIG. 1 is used. Commercially available RPL latex solution ($ 40 Solids, available from Versatile Products, Pine Brook, New Jersey, available at

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under the trade name "Capitol 232 EFL solution" up to $ 20 solids are dissolved in water and used as bath 18.

Four _{yarn ends 5} of which each yarn is made from 1260 denier. There is a strong load in the number of 240 and the twist number 0. A material is used as the thread, which is a combination of hexamethylenediamine adipic acid polycondensate with polyester. The material is available from Allied Chemical under the designation "EF 121". These yarns 32a, 32b, 32c and 32d are passed through said bath at a speed of about 37 »5 m per minute. After being immersed in the bath, the yarns are collected and fed through the slotted guide eye 24 to the tensioning device 26 and arranged in a parallel coplanar position until the individual yarn edges touch each other as a result of the guide device 28. In this state and while the yarns are still wet, they are wound onto the winding core 30.

The winding created in this way from the reinforcing tape is ^{dried in hot air at about 90 to 100 °} C. for a period of about 2 hours and then cooled to room temperature. The tape then shows a solids uptake of about 14% by weight. Four yarns are combined at their edges to form a band in order to create the flat kopla- '-28-

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nare tape, in which four yarns form one end of the tape, to accomplish. Again, every single yarn is very carefully impregnated right down to the middle of its cross-section. The formed roll of reinforcement tape is uniformly strong and compact, in turn every layer of the roll with is connected to the adjacent layers, but the topmost layer is very easily peeled off from the layers below can be.

Example 2;

Reinforcement tape wrap produced according to Example 1 are used to manufacture "SAE 100 R3" hydraulic hose used. Such a hose is a seamless, oil-resistant hose, the inner tube of which is made of polychloroprene. Rubber is made up of a fabric layer of high strength and flat contour, which is made by braided organic Yarn is formed. An intermediate layer of polychloroprene is applied and then a second braid before another polychloroprene topcoat is applied. The polychloroprene tube is made in the desired Size extruded over a flexible plastic core. A standard New England butt braider with two Worktables and 24 spools is used, with each winding of yarn being used to apply the first and second braid layers is used. (Twenty-four tapes made according to Example 1 are now used.)

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The first layer is braided over the polychloroprene tube, A polychloroprene layer of the appropriate size is placed over the first braid applied and then a second braid performed. A polychloroprene sheath is in corresponding, dimension extruded over the second braid.

Each of the polychloroprene rubber layers is previously coated with suitable ones Vulcanizing agents, accelerators, fillers and plasticizers have been provided which are commonly used for the Hose formation or vulcanization are required.

The hose that has not yet cured is then connected to a Surround the lead sheath using a lead press and after this wrapping for a period of 45 minutes vulcanized in superheated steam. Then the lead jacket is stripped off the hose.

The tube thus obtained was used for quality control by testing it in accordance with "SAE" regulations. It turned out that it fully meets these requirements. The adhesion between the rubber layers and the textile reinforcement layers surpassed everything before.

-30-909838 / 123 1

Claims (1)

- 30 claims 1. A method for forming a reinforcement tape lap from at least two multi-thread yarns, wherein the reinforcement "tape is suitable for use in the production of textile-reinforced hoses and the winding has a winding core has, on which several layers of the tape are wound one above the other, characterized in that that essentially untwisted or untwisted yarns (32a-32d) are impregnated with a polymeric binder (18) which glue the yarns to one another and to a subsequently applied rubber supply (42,44,50) allows the yarns with the binder on a dry basis, calculated in one amount of at least $ 10 the weight of the yarn, impregnated and then essentially laterally side by side parallel and coplanar oriented with their side edges in mutual Brought into contact and wound onto the core (30) while the binder is still moist, and then the binder is dried to the yarns at their touching edges to form the tape (38) and the successive. To connect layers of the tape together,. whereby the binding of the individual tape layers is chosen so that the respective outer layer can easily be detached from the one underneath. -31-909838 / 1231 2. The method according to claim "1," thereby marked z calibration nets that the yarns (32a-32d) for impregnating - are immersed in an aqueous Resorcinoiformaldehyd rubber latex. Method according to Claim 1 and / or 2, d a d u rc h marked without t that the polymeric binder for Impregnation of the yarns on a dry basis, calculated in an amount equal to 12 Ms 15 $ of the weight of the yarn will. 4. The method according to one or more of claims 1 to 3, characterized in that for Formation of the tape multifilament yarns are used whose Two-material threads, namely polyamide and polyester, are composed. 5. The method according to one or more of claims 1 to 3, characterized in that for Ribbon formation of two-material multi-thread yarns with threads made of hexamethylenediamine-adipic acid polycondensate and polyethylene terephthalate can be used. 6. The method according to one or more of claims 1 to 5, characterized in that three up to six multi-thread yarns are arranged side by side for band formation. 9 0 9838/12: 3: 1. 7. Winding of reinforcing tape, characterized in that a large number of them are placed on a winding core superimposed layers of a tape are wound, which consists of at least two essentially untwisted or non-twisted multifilament yarns, which are made with a polymeric binder in an amount of at least 10 $ of the yarn, calculated on the dry matter of the Binders, are impregnated to bond the yarns to one another and to a rubber supply that is subsequently torn on to enable, the yarns being arranged essentially coplanar and parallel to one another and in this Arrangement along their touching edges are connected by the binder to the tape, while successive Layers of the tape are also connected by the polymeric binder, but the outer layers Location of the tape is easily removable from the next one below. 8. winding according to claim 7> characterized in that that the polymeric binder is made from resorcinol formaldehyde rubber consists. 9. winding according to claim 7 and / or 8, characterized gekennz e i without t that the proportion of the polymeric binder used to impregnate the yarns is 12 to 15% of the weight of the yarn, calculated on the dry substance of the binder. -33- 90983 8/1231 10 ", winding according to one or more of claims 7" to 9 _9, characterized in that the "threads of the multi-stranded yarns are composed of two materials, of polyamide and polyester ₉ " IT »lap according to one or more of claims 7" to 10, characterized in that the two-fabric threads made of hexamethylene diarain adipic acid polycondensate and polyethylene erephthalate "exist" 12. "winding according to one or more of claims 7 Ms 11, characterized in that there is a band consists of three Ms six multifilament yarns. 13ο high pressure hose, "consisting of a rubber-like inner tube, a layer of textile reinforcement tape wound over it and a second layer surrounding this layer rubber-like tube, marked thereby et that the reinforcing tape (38) from at least two essentially untwisted or untwisted multi-thread Yarns (32a-32d), which are impregnated with a polymeric binder (18), which glue the yarns together with each other and with the gourami-like tubes (42,44,50) and the amount of which is at least 10 $ of the yarn, calculated on the dry substance of the binder, is -34-9 0 9-8 38/1231 the yarns being substantially parallel and coplanar arranged and connected along the "touching edges" to the tape, while the inner and outer Rubber pipe are vulcanized together with the binder, so that each rubber pipe is unbreakable and tough with the textile reinforcement connected is. '14. A hose according to claim 13, characterized in that wound on the second rubber-like tube a second location of the text lien reinforcing band and above a third rubber-like tube is applied, and that all the elastomeric tubes are vulcanized together with the polymeric binder in the adjacent layers. 15. Hose according to claim 13 and / or 14, characterized characterized in that the polymeric binder consists of resorcinol formaldehyde gum. 16. Hose according to one or more of claims 13 to 15, characterized in that the binder portion 12 to 15 $ of the weight of the yarn, calculated on the dry substance of the binder is. 17. Hose according to one or more of claims 13 to 16, characterized in that oils -35 -9 0 9 8 3 3/1231 unload the multi-ply yarns made of two-fabric twisted threads Polyamide and polyester, "are made of. 18. Hose according to one or more of. Claims 13 "to 17, characterized in that the two-material threads made from hexamethylenediamine adipic acid polycondensate and polyethylene terephthalate. 19. Hose according to one or more of claims 13 "to 18, characterized in that the Ribbon consists of three to six multifilament yarns. 909838 / 1.231 Blank page