COMMITTEE ON INVENTIONS AND DISCOVERIES - INVENTOR'S CERTIFICATE NO. SU 665037 - SINGLE-THICKNESS WARP KNIT TWO-SIDED PILE KNITTED FABRIC

Sep 21, 2026

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Invention certificate SU 665037 (USSR) describes technology for manufacturing single-thickness warp knit two-sided pile knitted fabric. The invention targets shortcomings of known structures where pile loops appear mainly on the face side, where the ground weave limits use, or where achieving two-sided pile requires more bars and increases thickness and unevenness. The proposed structure simplifies manufacture and improves quality by forming pile-loop systems on the face side as plaited loops in the ground, then forming weft stitches that fix the pile loops through weft drawings, with alternating face and ground loops across rows. Manufacturing uses a warp knitting machine with a minimum of three bars and specific yarn bar threading arrangements.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages28

Reading Time1 h 11 min

AccessFree to download

Application and publication information

Patent and classification details

Prior art and shortcomings

Known warp knit pile fabrics

Goal and solution

Simplification and quality improvement

Construction and manufacturing

Yarn systems and bar threading

Figures and analysis references

Ladonkin,N.A. Single-thickness warp knit two-sided pileknitted fabric /by N.A.Ladonkin and others.8 p. Patent(Russian)No.665037(1979).Filed: TRANSLATION NO.4651 Russian Patent No.:SU 665037 ● Code:360-5487-1 # COMMITTEE ON INVENTIONS AND DISCOVERIES,COUNCIL OF MINISTERS,USSRINVENTOR'S CERTIFICATE NO.:SU 665037 Int.Cl.: D 04 B 21/02 Russian Cl.: 677.61(088.8) Application No.: 2552701/28-12 Application Date: October 31,1977 Publication Date: May 30,1979 Bulletin No.20 Publication Date of Description: May 30,1979 SINGLE-THICKNESS WARP KNIT TWO-SIDED PILE KNITTED FABRIC N.A.Ladonkin,L.A.Kudryavin, Inventors: F.F.Biryukov,V.A.Nosakin, A.S.Karev The Moscow Order of Labor'sRed Banner Textile Institute Applicant: The invention relates to the knitting industry,in particular,it concerns technology for manufacture of single-thicknesstwo-sided pile knitted fabric. There is a known knitted fabric manufactured on a warpknitting machine of the "warp loom"type [1]. This fabric isproduced both on three-and on four-bar machines. Digitized by the Internet Archivein 2016 https://archive.org/details/singlethicknessw00lado A shortcoming of this knitted fabric is the fact that the pileloops are all on the face side of the fabric. There is also a single-thickness two-sided pile knittedfabric which is manufactured on a three-bar machine,but theground of this fabric is a filet weave,which limits the useof this knitted fabric;it is used only for summer garments,underwear or special purpose items [2]. In addition,the pilelevel of this fabric is not great and the pile,which is formedby one bar,is distributed on the face and back sides of the fabric. There is a warp knit single-thickness pile fabric which isproduced by weaving together several systems of yarns withdrawing-in every other tooth [3]. To make a two-sided pilefabric it is necessary,at a minimum,to have four bars,ofwhich two -the second and third -knit the ground,usingevery second needle,and the third bar knits a chain stitch,and the second [sic]connects the chain with a weft stitch. The first and fourth bars make stitches in one row onto the needleswhich knit the ground,and in the next row onto needles free ofground yarns,while the last in the next row will be dropped;inthis way pile loops are formed. The first bar forms pile loopson the back side of the ground and the fourth on the face,sincethey are positioned on different sides of the ground bars. A shortcoming of this knitted fabric is the need to have onthe machine as a minimum four bars,and it is much more complicatedto run a four-bar machine than a three-bar one. In addition,besides yarns of the ground yarns of the pile are knitted throughin every second row both on the face and on the back,whichsharply increases the overall thickness of the yarns,impedesknitting through by the needles and causes the knitted fabricto be thicker in this row. Thicker and thinner rows alternatein this weave,which produces transverse ribbing and reduces thequality of the knitted fabric. The goal of the invention is a simplification of manufactureand improvement of quality of knitted fabric. This goal is achieved by the fact that in the proposedknitted fabric the system of yarns which form the pile loopson the face side plaited loops in one row of the ground,andin the next row of the foundation it forms weft stitches,andthe pile loops are fixed in the ground by the weft drawings. The pile loops on the face side and the loops of the ground,which are formed from a single system of yarns,alternatebetween each other every other row. Figure 1 shows a graph of the placement of the yarns ofthe proposed single-thickness warp knit two-sided pile fabric;Figure 2 shows the threading of the bars;Figure 3 shows ananalysis recording of the placement of the yarn;Figure 4 showsa graph of the placement of yarns for anchoring the velour loopstighter of the face side;Figure 5 shows the threadin

FAQs

What invention does SU 665037 focus on?

SU 665037 focuses on manufacturing technology for single-thickness warp knit two-sided pile knitted fabric, improving how pile loops are formed and fixed while keeping production simpler and higher quality.

What problems in earlier fabrics does the invention address?

Earlier fabrics often place pile loops only on the face side, restrict usage due to ground weave limitations, or require at least four bars, which increases complexity and causes uneven thickness and transverse ribbing.

How does the proposed fabric form and fix pile loops?

The system forming pile loops on the face side creates plaited loops in one row of the ground; the next row forms weft stitches, and the pile loops are fixed in the ground by these weft drawings. Face-side pile loops and ground loops alternate every other row.

Sep 21, 2026

Uploaded by Quinn