DE3001147C2 - - Google Patents

Description

The invention relates to a knitted, longitudinally elastic Fabric web for use as elastic or permanent elastic compression or support bandage according to the Preamble of the claim.

Such a knitted, longitudinally elastic fabric web is known from US-PS 39 65 703. This concerns a longitudinally elastic, knitted compression bandage material consisting of a variety of rib-like, parallel wales made of stretchy material and transverse weft threads. The gunshot they extend across the entire bandage wide, so that it is a weft acts here. Here are the elastic threads irregularly worked into the wales, so that a different pressure on the skin upper surface arises when this compression bandage material is applied to a part of the body. For this compress However, the bandage material is not dimensionally stable Bandage available, but a bandage that comes with the Stretch becomes narrower and irreversible shifts and bulges in use. This is due to the fact that the wales only loop around the continuous weft so that Shifts and bulges are the result. Also through the additional weft entry over the entire The width of the compression bandage material does not become flattened edge created. In addition, this Compression bandage material no elastic rubber or polyurethane threads used during subject to a 200-400% delay are.  

Permanently elastic bandages are also known, which have elastic elements in the longitudinal direction, which are inherently elastic. With these elastic Elements are rubber or polyurethane threads with cotton or cellulose or synthetic, textured, polyfilen threads or synthetic Staple fiber yarns are wound or wound. These elastic yarn elements are with or several single threads made of cotton twine or viscose or a similar blended yarn or Yarns from other raw materials in a wide variety Relationships arranged in the longitudinal direction. The Weft yarns consist of single or twisted threads made of viscose, cotton or a blended yarn Cotton / viscose or synthetic yarn.

Permanently elastic bandages of this type generally have a stretch of about 180%. It is beyond that also permanently elastic bandages with short stretch from about 60 to 70% and medium stretch known from about 100 to 120%. The elasticity such bandages is on the polyurethane or Rubber threads traced by cotton or Rayon yarn or of textured polyamide or other textured plastic threads of polyfile type are wound or wound.

In these known sanitary napkins, filling threads are used in the warp direction also textured, polyfile, synthetic threads are used so that the warp portion these pads are made entirely of non-absorbent, elastic elements is built. This elastic Elements, especially when it is textured, polyfiles polyamide or other textured, polyfile plastic threads are concerned  the weft yarns made from natural fibers and thus prevent bridging between the skin and fabric so that moisture wicking is extreme is small and warm and humid chambers are the result, which form the basis for inflammation of all kinds. Another disadvantage with these known sanitary napkins, whose chains are only made of synthetic threads consist in the fact that there is a large part allergic symptoms occur from patients can. All of these bandages are different Manufacturing process made on ribbon looms.

Permanently elastic bandages are also known are made on knitting machines and in their Lengthways synthetic, crimped threads point. As "connecting elements" of the warp threads - weft-like type of laying - be cotton or Cotton wool yarns or twists are used that cover the surfaces provide the necessary support. You can also not using these elastic yarns in the warp direction elastic twine elements are combined. Form the elastic and inelastic threads running in parallel in a certain rhythm Mesh stitches made from both elastic and can also consist of inelastic material. The Disadvantage of these known bandages, which are also polyurethane or rubber threads, wound with cotton or rayon or have synthetic, textured threads, is that it narrows when stretched become and thus there are constrictions, d. H. Strangula tion, can come. Furthermore, these are known Tie through the constant return of the shot similar warp thread, the edge is usually a little thicker designed so that it is often in this edge in the area to severe constrictions in the skin got to. When using, especially synthetic  Fiber material also exists in these known ones Bind the risk of formation of damp and warm chambers that are the basis for inflammation of all kinds.

DE-OS 25 36 023 is an elastic band known with a roughened surface. This tape is designed in such a way that in each wale chen an elastic thread as a weft is, with all wales through at least are connected to an inelastic weft thread and with two adjacent wales connected by an inelastic fleece thread are at least one row of stitches each skips. Even if with this stretchy band the incorporated elastic threads in tension State are involved, these extend elastic threads while completing the Band and give the goods a longitudinal elasticity quality, but ultimately there is an essential one Difference in whether the elastic threads in the tensioned state are involved or whether elastic Threads used during the knitting process are subject to a delay, this delay must be in a higher range if one Compression bandage should be obtained while on the other hand, the well-known stretchable band due to its Thread structure and lay not as a compression bandage Can be used, but only as a bandage and is used as a body bandage, whereby by the with integrated fleece threads a textile and stretchable fabric is also obtained, that is roughened on its surface.

Permanently elastic knitted bandages are also known, which due to their special placement in a  Longitudinal elongation does not produce any transverse contraction and thus its old width even after expansion maintained. The disadvantage of these sanitary napkins, as far as possible have a net-like structure is that when putting these bandages on body parts of everyone Kind of because of the hard wales that are compared to the remaining area of the bandage stand out strongly, and due to their increased traction an increased pressure on the surface of the skin is exercised and thus it leads to groove-shaped impressions comes into the skin surface, so that the venous Reflux severely impaired, even prevented becomes. The longitudinal or machine direction trained fringe sticks made of polyurethane with textured polyamide braided, particularly strong in this way. Another factor is that bandages of this type are none Have cross stability and therefore not as support associations can be used. In addition, that when putting the bandage on body parts with small Radius the hard wales, since these are not Possess resilience, move apart or be pushed apart so that it is too wrong versible, bulge-like protuberances comes, up to the formation of holes, especially in the heel area, can diverge.

The invention has for its object a knitted, longitudinally elastic fabric web at the beginning to create the type mentioned, whose edge at the edges is flattened and when used as a bandage when laying the bandage tours in the fixed No more pressure marks or constrictions occur and no transverse contraction when expanding, d. H. so does not strangle and at the wales have a configuration,  due to the no different on the skin surface Pressure, d. H. no creasing on the whole Width is exerted so that the venous return is not disturbed or prevented.

This object is achieved in the claim marked features solved.

Because of this design, a knitted longitudinally elastic fabric web for use as elastic or permanently elastic compression or support bandage created which is structured as follows and which has the following advantages.

The fabric web is manufactured in such a way that the bare, inherently elastic rubber or Polyurethane threads are subject to warping in the knitting process be around 200 to 400%. An inelastic Cotton or rayon thread or twine same raw materials wrapped in an open or closed fringe formation the permanently elastic Thread so that there are no bulky, thin wales arise in the longitudinal direction. These wales are made together by cotton or rayon threads connected so that a firm, irreversible in the transverse direction, non-displaceable knitted fabric, in the longitudinal direction elastic, arises. What is important is the arrangement the weft threads that this over several needles connect the stitches or fringes together the, so that a weft-like entry arises. This means that after three or four needles the Thread runs back to the exit needle, then the same offset for the next row of stitches to experience. This will cause the expansion first a transverse contraction in the longitudinal direction  avoided because of the tension that occurs when the bandage is expanded arises only perpendicular to the wales can act so that irreversible cross distortions and Bulges are excluded. This is the Appearance of strangulation of a knitted, longitudinal elastic compression or permanent bandage completely excluded. The bandage is on one Elongation of maximum 200% in width unchanged as before. Shifting the stitches chopsticks, like this with knitted, net-like bandages the case is no longer there either. The permanently elastic element lies inside the Mesh and is made of the stitch-forming cotton thread completely enclosed so that a previous one Spinning or winding is no longer necessary is.

In addition, these bandages are flattened Have edge so that these bandages are very can be created well plastically without the Constrict edges or due to the reduced thickness the edge of the bandage to different Druckver can come from the edge to the center of the bandage, by the bandage lying on top of each other at the edge. It is therefore a knitted, longitudinally elastic fabric track created, the edge of which is flattened at the edges and when they are used as a bandage when matching otherwise the bandage tours in the finished bandage no pressure points or pinching occur.

In addition, there is no transverse contraction when stretching one because the wales on the far side the weft threads are vertical. The wales Chen have a soft design due to the no different on the skin surface Press, d. H. no grooving is exercised, so that a uniform over the whole band width  There is pressure on the skin surface. At the Put on the bandage, especially over body parts with a small radius, such as. B. heel, do not kick irreversible displacements of the wales on.

Sanitary towels that are made from the knitted, longitudinally elastic web of fabric consist almost exclusively of pure cotton or cotton / cellulose or cellulose, so that excellent moisture and heat transport is ensured and the feared damp and warm chambers cannot occur, which are the prerequisite for inflammation. Depending on the desired compression force and tissue thickness, finer or thicker material is used. For the production of a light compression bandage with an extensibility of about 180%, for example, stitch-forming threads made of 12 tex × 2 cotton are used, as permanently elastic elements polyurethane 156 dtex and as weft material 14 tex × 2 cotton, the binding being for example as follows:
Laying rail 1 - 2.0-0.2
Laying rail 2 - 0.0-2.2
Laying rail 3 - 0.0-10.10.

Such a bandage has an elongated m2 weight of about 60 g. The edge is on the edge from the fourth Wales flattened so that the bandage in the Range of overlapping tours none exerts increased pressure.

Such a knitted, longitudinally elastic fabric web is a permanently elastic knitted or Raschel bandage usable, the advantage of which is that that it is without all of the above  the known bandages as compression or support bandage can be used, whereby no transverse contraction when stretching in the longitudinal direction occurs when the bandage is thinned at the edge is that when the request is made, the superimposed ones Layers cannot exert increased pressure. The Laying is designed so that no different Pressure on the skin across the entire bandage width is exerted and thus the venous reflux is not can be prevented. Furthermore, the cross is Stability of a bandage from the knitted, longitudinal elastic the tissue web so increased that irreversible plasti no changes in the transverse direction occur can.

Embodiments of the invention are as follows explained in more detail with reference to the drawing. It shows

Fig. 1 shows the course of the stitch-forming yarn image of a Flächenge designed as a knitted fabric web,

Fig. 2 shows the stitch-forming yarn in the form of a fraying,

Fig. 3 shows the profile of the permanently elastic yarn,

Fig. 4 is a planar structure in accordance with Figs. 1 to 3 with a weft lapping over four needles,

Fig. 5 shows the offset of a weft over five needles and

Fig. 6 is a partially wound into a roll knitted fabric web in a diagrammatical view.

The sheet 10 shown in Fig. 1 consists of stitch-forming threads 20 made of cotton, rayon or twine threads and of elastic or permanently elastic threads 30 made of elastic rubber or polyurethane threads, each elastic thread 30 lying inside the so-called fringed rod, which is the bare, of Surrounding nature made of elastic rubber or polyurethane thread 30 protective. The stitch-forming thread 20 of the fabric 10 is fringed ( Fig. 2). The permanently elastic thread 30 is then passed through the fringe openings formed ( FIG. 3). As can be seen in FIG. 4, the surface structure de 10 is connected to one another by a weft laying over four needles. The non-elastic, stitch-forming threads are shown at 20 , the permanently elastic threads at 30 and the inelastic "weft threads" serving as connecting elements at 40 , while FIG. 5 shows the displacement of a weft thread over five needles.

Claims (1)

Knitted, longitudinally elastic fabric web for use as an elastic or permanently elastic compression or support bandage made of a flat structure with fringes and with longitudinally running wales, each with two wales connecting weft threads and an elastic thread bound by the fringe, characterized in that the fabric ( 10 )

• a) made of untreated, naturally elastic rubber or polyurethane threads ( 30 ), which have been subjected to a distortion lying at 200 to 400%, wherein
• b) each permanently elastic thread ( 30 ) in a single stitch rod made of an inelastic cotton or rayon thread or twisted thread ( 20 ) with the formation of longitudinal, non-bulky, thin, uniform pressure on the entire contact surface (skin surface) with a bandage wielding wales,
• c) the wales are connected to one another by inelastic weft threads ( 40 ) made from cotton or rayon threads to form a solid knitted fabric which has no irreversible displacement in the transverse and longitudinal directions,
• d) each of the weft threads ( 40 ) is laid over at least three, preferably over four or five wales and the weft threads ( 40 ) over a larger width to increase the fringe rod to fringe rod on both sides of the fabric in a ratio 1-2- 3-4-5 are offset at an offset up to five needles increasing edge thickness and
• e) the stitch-forming threads ( 20 ) made of 12 tex × 2 cotton, the permanently elastic threads ( 30 ) made of polyurethane of dimension 156 dtex and the weft threads ( 40 ) made of 14 tex × 2 cotton.