DE10260694A1 - Manufacture of thick elastic bandage for medicinal or veterinary use produces and finishes full-area textile before removing separation threads to form bandage strips - Google Patents

Abstract

A thread introduction or pile formation corresponds with the width of bandage required. A mesh bond is formed to hold edges of the bandage strips to be produced. The flat fabric is finished by various processes e.g. washing, drying and/or thermal fixing, before separation. Separating thread(s) introduced into the weave are removed, separating the area of material into bandage strips. To work-in intentional separation locations at the bandage width, threads in outer surfaces of the spacing structure and in the pile region, are omitted. The strips are connected as a composite, using one or more separating threads laid as wefts, as a combined mesh/weft or as meshing. The weft is laid interruptedly at high mesh number. The separation thread is worked in as fringing, weft thread binding or jersey knit in either or both textile surfaces, produced by three-dimensional knitting. Monofilament threads are incorporated in jersey knit. Fine Elastane (RTM) threads are introduced as wefts or as jersey knit. Fewer threads are drawn in at edges of the strips, to make them flatter. To assist later orientation, and use for bandage or absorbent toweling, colored threads or material are introduced at defined spacing from the edges. The separation thread is introduced using a separate, additional guide bar. Monofilament pile threads are thermally-fixed in the composite, to stabilize their molecular structure. An Independent claim is included for the fabric produced.

Description

The invention relates to a method for producing longitudinally elastic three-dimensional textile fabric in strip form of a composite as well as a divisible into longitudinal stripes three-dimensional elastic fabric.

Known are single-surface elastic Binding in woven or knitted form, with or without use of elastane and in different strain limits for compression purposes e.g. used in the medical or veterinary field become.

For Certain medical indications range from these compression bandages not from. For the treatment of lymphedema patients, e.g. in the complex physical decongestive therapy, when using such Tie extra Padding used in the form of padding cotton or foam which result in the Mobility of the limbs enormously limited and the well-being of patients through sweating and accumulation of heat impaired becomes.

Also known are three-dimensional structures in the form of spacer fabrics, fabrics and knits, their textile outer surfaces by spacing threads connected and kept at a distance become.

All these three-dimensional structures lie as a textile surface in front. The production of elastic narrow fabrics based on such Three-dimensional structures is not previously known.

From PCT WO 95/16416 is a compression bandage previously known, consisting of a strip spacer knit as a doubled, with spacing threads Connected structure exists. However, there is no teaching there acceptable solution for one reproducible edge termination removable. Rather limited the revelation generally refers to cutting strips from a textile fabric. By cutting the pile threads and the two textile outer surfaces are destroyed and it can fiber pieces in the Get wound, so that the thus obtained edge structures in any way medical requirements suffice or skin sensory are not acceptable.

The DE 43 36 303 A1 describes a two-ply spacer knitted fabric which has elastic and moisture-conducting properties, the moisture transport being effected by differently filamentated materials in the two textile surfaces and moisture-conducting fiber materials extending between the spacer threads.

The U.S. Patent 5,385,036 discloses a spacer knitted fabric, the two textile surfaces are made elastic, wherein the elastane is formed as a mesh. The invention further discloses the different angular orientation of the pile threads as spacers.

The DE 196 35 170 C1 relates to a moisture-conducting and absorbent spacer fabric for close-fitting textiles in medical, orthopedic and nursing fields. As a spacer and at the same time moisture-guiding thread, a three-component thread is used.

According to DE 198 21 687 A1 a three-dimensional fabric is previously known, in which high-titer elastane are used to achieve a high compression effect, which are involved in the outer surfaces as weft. Here, a high force-strain behavior of the spacer knitted fabric and a good compression is achieved.

According to utility model G 93 09 374.8 belongs to a state of the art spacer fabric, which consists of 100% PES and as spacers threads side by side contains monofilament and multifilament yarns and thus has better feel, good formability and recyclability.

In the DE 100 55 902 A1 there is described a medical grade reusable textile composite whose upper body facing textile layer is made of a hydrophobic material intended to guide body moisture into the lower cellulosic fibrous absorbent layer.

Furthermore, in addition to medical Fields of application spacer knitted fabric predominantly in technical fields, such as in the automotive industry as Seat component, as a car roof, as splash protection for trucks etc. Likewise, these three-dimensional structures are used as geotextiles, industrial textiles, oil collecting mats, sporting goods and more.

All known solutions, however, the common liability Disadvantage of this only available as a flat product and tailored to the final product during further processing Need to become. In this case, it is then to nibble the cut edges or border with a band.

From the above, it is therefore an object of the invention to provide a method for producing longitudinally elastic three-dimensional textile fabrics in strip form from a composite and a corresponding divisible in longitudinal strips three-dimensional elastic fabric, which can achieve machine-manufacturable, reproducible edge seals with defined extensional elastic behavior and has. According to the process should be fed to the active process of the composite of a necessary thermal fixation for stabilizing the spacing monofilament pile threads, the subsequent separation to the finishing process, the necessary separation, cutting and winding, but without manual or additional Versäuberungsarbeiten required at the edges of the strips obtained become.

The solution of the object of the invention takes place with a method in its definition according to claim 1 and with a fabric according to the combination of features according to claim 15, wherein the dependent claims at least expedient embodiments and represent further education.

The invention thus provides a method for producing longitudinally elastic three-dimensional narrow textiles, which in measured width, defined stretching and spacing and one by stitching clean edge design are manufacturable, the products obtained in preferably medical applications to achieve a high compression and climate impact and to increase the utility value and the physiological wearing comfort can be used.

In addition to use as compression bandages for complex physical decongestive therapy or for treatment of venous disease can the narrow fabrics of the invention also use as a close up worn belt, equipped with sensor technology or similar for collecting body data, be used. Likewise, a use in the field of veterinary medicine, e.g. to supply the hocks in horses, possible.

According to the invention, one of longitudinal strips with knitted edges existing three-dimensional elastic textile surface, the in the composite, assumed. These longitudinal stripes have sideways to each other a stable mesh connection, which only after the Finishing process is solved and a separation of the longitudinal stripes in a simple way possible power.

It will accordingly according to respective strip width the pile threading or the thread feeder selected around at the opposite Edges of the later Strip to get a stitched connection, which will then only after the aforesaid Refining process the fabric, such as washing, drying and / or thermal fixing is achieved thereby that at least an inserted separation thread is removed or separated.

With the product thus obtained is its use as a spacer fabric for compression therapy in direct skin contact possible without the use of padding material. The meshed edges are particle free and as well elastic as the entire narrow textile. Furthermore, in particular the edges of the product no Abschnüerstekte when applying associations under Compression on the limbs. A separate edge roughening is not required in implementation of the invention.

The distance-retaining zone, too breathable under pressure ensures a comfortable fit, promotes the patient compliance and thus the therapeutic success.

For the incorporation of the predetermined separation point according to the respective Strip width of the longitudinal strips are Threads in the outer surfaces of the Spacer structure and omitted in the pole. Since the pile threads the distance can hold steady in the edge area of the longitudinal stripes less threads be retracted so that the Edge region can be worked in a smaller thickness. The like flattened edges wear when using the longitudinal strips as for example: bandage when overlapping the winding layers less on.

Also, it is possible according to the invention dependence from the width of the longitudinal stripes at a defined distance from the edge a colored material as Orientation for the overlap to introduce the flattened edges during the winding process.

The lateral connection of the longitudinal strips by a separating thread can be realized in various ways. That's a shot either permissive or intermittent then possible when using high mesh is working to later to ensure easier separation.

It is also possible to make the connection as a combined lacing stitch / weft. Of the Edge is strengthened by this binding combination and it is almost a result Breaking point.

Ultimately, the connection can be be realized as a scam.

With at least one separate guide rail can be incorporated in front and / or behind a fine elastane thread to be after performing of the particular thermal fixing process can be very well separated.

As a binding variant is preferably a jersey, open or closed fringe, shot or a combination of these bonds used.

Due to the targeted bias at the incorporation of the elastane during the knitting process, the thread is stretched and goes to the singulation the strip back to its original state, i. he slides in a lot advantageously in the mesh composite and is in the edge region no longer disturbing.

Another possibility is by means of Mesh formation by preferably an open or closed Fringe laying with inelastic yarns the lateral connection manufacture.

In this case, a separation takes place after the fixing process the connecting threads mechanically or manually.

It is envisaged that the pile thread in the edge region has no lateral connection to the respective next longitudinal strip. Accordingly, the Pollegeschienen be retract, the pile threading must be taken into account. By omitting pile threads or reduced thread feed, eg 1 full, 1 empty or 1 full, 2 empty, a soft and flat zone can be created at the edge, which prevents constriction when winding the elastic webs.

The three-dimensional knitted elastic vertical stripes be with at least five, but preferably made with seven guide rails.

The thickness of the structure is intended for associations to medical use preferably in the range of 1.5 mm to 3 mm lie. For other applications, e.g. as a belt, are Thicknesses up to 6 mm possible.

For the use as a compression bandage according to the invention, the structure the surface purposefully chosen. This structure must not be too smooth, otherwise slipping of the association during the wearing time possible is. Preferably, a surface of the spacer knit structured or velourized and the opposite surface worked smoothly. This has in addition to the increased slip resistance the advantage that by the better modeling the flexibility of the limbs, e.g. Arm or leg, significantly increased during exercise, achieved improved breathability and the well-being of the patient is improved.

Preferably suitable are fine Filet or ribbed structures, fringe-weft leggings, jersey, cloth, satin or twill.

The skin-facing internal structure the spacer knit fabric is preferably made of synthetic filament yarns, the outer side facing away from the skin the spacer knit of moisture absorbing materials, preferably synthetic multifilament microfiber yarns or cellulosic yarns, so that moisture can be absorbed and evaporated.

The invention is based on an embodiment and with the aid of figures will be explained in more detail.

Hereby show:

1 a schematic representation of a moisture-conducting spacer structure;

2 an example of a binding variant for the production of an elastic three-dimensional surface with longitudinal strips that produce by lateral threading systems in the front and rear surface the lateral connection to the adjacent longitudinal strip and are separated from each other only after the refining process;

3 a schematic representation of several three-dimensional narrow textiles with lateral connection;

4 an example of the lateral connection of the longitudinal strips and combination options, where shown from left to right:
Mesh-weft combination, only stitch, only weft, fringe (open or closed) and

5 an exemplary collection scheme.

First, it's supposed to be at different Examples are the material allocation of the available guide rails and thus the connected binding solutions are explained. Be on this referenced below the tabular compilation.

As a separation thread here is elastane in fine titers (22 dtex to 44 dtex) or a synthetic filament yarn used.

For the formation of the skin-near surface are preferably filamentated synthetic fibers in finenesses used between 33 dtex and 150 dtex. Take these fibers Moisture away from the skin and direct it through the capillary action in addition in the distance zone introduced filament threads in the second textile level of the structure, which by suitable Material insert moisture can absorb.

At least one elastic thread system Titles between 44 dtex and 470 dtex provide the required elasticity of the textile. In this case, the elastane thread can be formed as a mesh or as weft to be involved.

For the formation of the skin-remote area are preferably multifilament synthetic fibers and / or cellulosic Fibers are used in finenesses between 33 dtex and 150 dtex. These absorb moisture and evaporate it on the surface.

The spacing zone will be off low denier monofilament synthetic fibers of e.g. 22 dtex formed to 55 dtex. Optionally, to optimize the moisture transport a multifilament thread system are introduced into the clearance zone.

The example after 2 of a longitudinally elastic three-dimensional narrow textile with separating thread in front and behind is defined as follows:

In summary, according to the invention of a Incorporation of a separation gate within a textile composite assumed, over the Trenngasse defined widths of later obtained strips festlegbar are.

By incorporating the Trenngasse. is a clean edge design possible. The Trenngasse itself Hold the defined in longitudinal width longitudinal elastic strips together, at least until the refining process, that of economic establish on the fabric carried out will happen. Only afterwards is a separation of the longitudinally elastic Made tracks in the individual strips. The Trenngasse can by a Trennfadeneinarbeitung, either monofilament threads in Fransenlegung or fine elastane threads as weft binding or tricot, in at least one of the two textile surfaces of the Abstandsgewirkes done. Also, a single track refinement is possible. In In this case, the webs are separated on the double raschel machine knitted and wound up. Compared to the prior art it no longer necessary, pile threads to cut so that too There is no danger that later fiber pieces in the Get wound when the product thus realized as a binding in the medical field application finds.

1

up close surface

2

distance zone (Pile yarn)

3

remote from the skin surface

4

front separating thread (L ₁ )

5

rear divider (L ₂ )

Claims (18)

A process for the production of longitudinally elastic three-dimensional textile fabrics in strip form from a composite, wherein according to the respective strip width, the pile threading or the thread take-up is selected to obtain at the opposite edges of the later strips a mesh connection, which only after the finishing process on the fabric, such as Washing, drying and / or thermal fixing is achieved by removing or introducing at least one introduced separating thread is separated. Method according to claim 1, characterized in that that for the incorporation the predetermined breaking point corresponding to the respective strip width threads in the Outside surfaces of the Spacer structure and are omitted in the pole. Method according to claim 1 or 2, characterized that the Connection of the strips in the composite by at least one separating thread as a shot, realized as a combined lacing stitch / weft or as a stitch becomes. Method according to claim 3, characterized that the weft lapping selected at high mesh size is selected. Method according to claim 1, characterized in that that this Trennfadeneinarbeiten fringe laying, as weft insertion or tricot in at least one of the two textile surfaces of the three-dimensional Spacer knitted takes place. Method according to claim 5, characterized in that that monofilament Threads in Fransenlegung be used. Method according to claim 5, characterized in that that fine elastane as weft binding or tricot be used. Method according to one of the preceding claims, characterized characterized in that the edge areas of the longitudinal strips To obtain flat, non-applied edges, fewer threads are drawn become. Method according to claim 8, characterized in that that as Orientation for The later obtained strips and their use as a bandage during winding in a defined distance from the respective edge a colored Material or thread is introduced or provided. Method according to claim 5, characterized by the use of a separate, additional guide bar for incorporation of the separating thread. Method according to claim 10, characterized in that that used elastic separating threads stretched during the active process and to be prestressed, these being after being singulated into the mesh composite, Relaxing, slide in. Method according to claim 1, characterized in that that the lateral connection of the strip edges by stitching through preferably open or closed fringe laying with inelastic Yarns or threads takes place, which after the refining process for the purpose of separating the strip will be cut out. Method according to one of the preceding claims, characterized characterized in that for use the scattered stripes of the three-dimensional textile fabric structured as a medical association a surface of the knitted fabric and the opposite Side with smooth surface is trained. Method according to claim 13, characterized in that that the the skin-facing side of the spacer knit synthetic Filament yarns and the side facing away from the skin of moisture-absorbing Materials is made. Three-dimensional elastic fabric than in longitudinal stripes defined width divisible composite, characterized in that the longitudinal strips are laterally interconnected and scored by stitching stable longitudinal edges after strip separation. Three-dimensional sheet according to claim 15, characterized in that two textile outer surfaces through spacing monofilament pile threads are connected. Three-dimensional sheet according to claim 16, characterized in that the monofilament pile threads to thermally stabilize their monocular structure in the composite are fixed. Three-dimensional sheet, made after a method according to at least one of the claims 1 to 14.