UA80048C2 - Warp-knitted elastic band for bandages - Google Patents

Abstract

A warp-knitted elastic band for bandages, elastic in long direction and not elastic in transverse direction, has stitch wales of chains with open stitches bases of which are connected with underlaps of two cross wefts and elastomer long wefts. One transverse weft placed on three stitch pitches connects two stitch wales of chains, the other transverse weft placed on seven needle pitches with height of repeat in four courses connects three stitch wales of chains, elastomer long weft threads are laid as combined ones, in particular with section of winding chain underlaps, for instance in two rowsof knitting, and section of straight sections laid out of stitch wales along six rows with change of direction in three rows, with not complete set of all the combs, for instance in two teeth.

Description

Description of the invention

The invention belongs to knitwear production, namely to warp-knit knitwear of the weft 2 weave class and, in particular, in the form of a tape, can be used as a textile compression material for elastic bandages.

Known technical solutions for the structure of warp-knitted elastic braids, tapes and fabrics based on the class of weft weaves have loop columns of chains made of non-elastomeric threads, transverse weft non-elastomeric threads and longitudinal elastomeric threads (1, 2, 3, 4). These products have different functional 70 purposes: applied, stretching, bandage, bandage.

The closest thing to the claimed invention is the "Coated Compression Bandage Fabric" described in US Pat. No. 41).

The well-known solution is based on a warp-knitted weft jersey that looks like a ribbon. The cored elastic tape has open loop chain columns of non-elastomeric yarns with 72 comb full sweeps, two systems of transverse weft non-elastomeric yarns running the full width of the tape, one system of weft elastomeric yarns having a uniform offset of one needle pitch, with incomplete passing of the comb (the elastomeric longitudinal thread is missing in every third loop column).

Loop columns of chains connecting layers of non-elastomeric weft threads form the ground. The system of longitudinal elastomeric threads wraps, according to the sifting of the combs, the corresponding columns of the chains, tightening the ground of the weave.

However, the known invention has disadvantages related to the possibility of the elastomeric thread coming out of the knitwear structure during tensile deformations during the operation of the product due to the fact that the transverse weft threads do not prevent the opening of the chain loops in the event of thread breakage, and the elastomeric threads are held in the loop structure by calculation of frictional forces. In addition: there is no surface effect in the structure of the prototype, and the existing smooth surface does not make it possible to reliably fix the tape layers during bandaging; the structure of the knitted fabric is dense, (3 which reduces air permeability; and also the disadvantage is the limited use of the stock of basic knitting equipment, since the machines by their design must have the technical ability to lay weft threads across the entire width of the product.

The invention is based on the task of creating a warp-knitted elastic band for bandages, which, due to its structure, based on a class of weft weaves with a certain laying of threads, would make it possible to manufacture /-«f elastic bands for bandages with improved operational properties on all types of bases sewing machines. at

In contrast to the known solution, the transverse weft, laid on three loop steps, connects two loop Ha») columns of chains, the second transverse weft, laid on seven needle steps with a report height of four loop rows, connects three loop columns of chains , elastomeric longitudinal weft threads are laid in combination with a section of wrapping chain stretches (in two rows of knitting) and a section of straight segments laid outside the loop columns along six rows with a change of direction after three rows, has an incomplete tube of all combs (through two teeth) . "

In Fig. the scheme of the structure of the declared structure of the warp-knitted elastic tape for bandages is shown, which C contains looped columns of chains 1 with open loops 2, transverse weft threads C, 4, elastomeric c longitudinal weft threads 5.

From" In the section of the report | knitwear, longitudinal weft elastomeric threads are laid in the form of straight parallel segments along three rows and form transverse ridges from the loops of the chains due to tightening with elastomeric threads, which are laid in a stretched form.

Elastomeric longitudinal weft threads are wrapped around the knitted loops of the chain and form the lowest points of the relief surface on the front side of the knitwear in the section of the ІІ report. aw! The given task is solved by the fact that the warp-knit tape for bandages, which is based on the structure of weft weaves, which is distinguished by the fact that all combs are incompletely blocked and the transverse non-elastomeric weft threads are laid in three and seven needle steps, and the elastomeric threads are laid along " iz" 20 columns of chains with open loops with a rapport containing a straight line in six rows with a change of direction after three rows. co Incomplete sifting of all four combs (1..1..1) reduces the surface density of the knitted fabric; two systems of transverse weft threads, which are laid in two layers at three and seven needle pitches, respectively, allows production of products on widespread warp knitting machines that do not have the technical ability to lay transverse weft threads over the entire width of the product. One layer of cross weft, formed

GF) with doubled non-elastomeric threads, connects two adjacent looped columns of chains in each row, and the second layer of cross weft formed by single non-elastomeric threads is laid stepwise with a report of four rows along three looped columns of chains, while the angle of contact threads increases and contact surfaces, due to which the elastomeric longitudinal weft threads are reliably 60 fixed in the knitwear structure and do not come out of the loop structure during stretching deformations.

Laying of elastomeric weft threads between two layers of transverse weft along all the columns of the chain with a report that contains six rows of weft with a change of direction after three rows, which forms transverse relief ridges on the front surface of the knitwear, which give the product the ability to reliably hold the layers during bandaging. because the reduction of the surface density of the bandage and the presence of a relief surface of the knitwear lead to a decrease in the density of winding the bandage on one or another part of the body with its reliable fixation and preservation of the air permeability of the layers of the bandage.

Literature: 1. France, patent Mo2129267, M.Kl.2 ДО4В21/00, 1972. 2. USSR, A.s. Mo912789, M.Kl.? DO4821/18, 1982

Z. Ukraine, patent Mo51996, M.Kl.2 do4v21/00,21/18, 2004. 4. USA, patent Mo3.965703 M.Kl.? DO4823/08, 1976 (prototype)

Claims (4)

The formula of the invention 1. A bonded elastic tape for bandages, stretchable in the longitudinal direction and non-stretchable in the transverse direction, comprising looped posts of chains with open loops, the backbones of which are connected by 72 passes of two transverse wefts, and elastomeric longitudinal wefts, characterized in that one transverse weft, laid on three loop steps, connects two loop columns of chains, the second transverse weft, laid on seven needle steps with a rapport height of four loop rows, connects three loop columns of chains, elastomeric longitudinal weft threads are laid in combination, namely, with a section of winding of chain stretches, for example, in two rows of knitting, and a section of straight segments laid outside the loop columns along six rows with a change of direction after three rows, has an incomplete recruitment of all combs, for example, through two teeth. 2. A grounded elastic tape for bandages according to claim 1, which is distinguished by having a relief surface, which gives the product the ability to reliably hold the layers during bandaging. 3. A basic elastic tape for bandages according to claim 1, which differs in that it has a smaller surface. CM density of knitwear. at 4. Basic elastic tape for bandages according to claim 1, which differs in that it is produced on common basic knitting machines. (ee) « «c) «c) c - with . and? (ee) («c) («c) sh» IR e) ime) 60 b5