WO2020133617A1

WO2020133617A1 - Novel warp-knitted double needle bar fabric

Info

Publication number: WO2020133617A1
Application number: PCT/CN2019/072886
Authority: WO
Inventors: 何贤德
Original assignee: 东莞超盈纺织有限公司
Priority date: 2018-12-25
Filing date: 2019-01-24
Publication date: 2020-07-02
Also published as: CN109736006A

Abstract

A novel warp-knitted double needle bar fabric, comprising a fabric body that is woven by using a double needle bar warp-knitting machine that is provided with a front needle bar and a rear needle bar; the fabric body has a looped surface and a smooth bottom surface that is closely attached to a bottom surface of the looped surface; the looped surface comprises multiple single loops, and adjacent loops among the multiple single loops are looped with one another; and the single loops are obtained by yarn knitting by using guide bars on the front needle bar and the rear needle bar of the double needle bar warp-knitting machine; thus, the present invention attains a dense loop effect.

Description

A new type of warp knitted double needle bed fabric

Technical field

The invention belongs to the technical field of fabrics, in particular to a warp knitted fabric woven on three needle bar warp knitting machines using three bar bars or more bar bars

Background technique

With the improvement of people's living standards, people have made higher demands on textile fabrics, and the requirements for personalized and functional products are becoming more and more vigorous, and the new weaving technology makes new fabrics possible. Towel cloth is a relatively common product in the market, including woven towels, weft knitted single-sided towels, double-sided towels, warp-knitted towels and jacquard towels based on these towels, printed towels and so on.

Woven towel: It is a fabric with terry structure interwoven with three systems of yarns. The yarns of these three systems are wool warp, ground warp and weft. At present, woven towels have developed from the simplest monochrome plain wool towels to jacquard jacquard, printing, non-twist towels, cut pile towels and so on.

Weft-knitted towel: The weft-knitted terry weave is composed of a flat needle coil and a terry loop with an elongated sinker arc. One yarn weaves the loop, and the other yarn weaves the loop with loops. The loop structure can be divided into ordinary loop structure and fancy loop structure, as well as single-sided and double-sided loops. In the process of using the terry fabric, because the terry is loose, the personnel on one or both sides of the fabric are accidentally pulled, causing the terry to shift, which destroys the appearance of the fabric.

Warp-knitted towels: There are many methods for warp knitting next time, such as single-sided warp knitting with looped loose terry fabrics, such fabrics must be knitted into a base fabric in loops on every other needle, terry comb Loops are formed intermittently on the adjacent needles, and loops are formed after they are loosened. Such loops have a large looseness and poor dimensional stability. Super-feeding loop structure, this structure adopts more let-off amount than usual to the back comb, so that the excess let-through amount allows the warp yarn to cross the surface of the technical front of the fabric, thereby forming a loop, the disadvantage is that this kind of wool The loops are not obvious and the fabric is unstable. Others use terry sinkers, full pins, and burnt-out processes to form terry fabrics. The warp-knitted double needle bed had no pile fabrics before, but there were pile fabrics, which were formed by cutting the spacer yarns of the warp-knit spacer fabric.

Cite some peer patents for further explanation:

1) Patent publication number: CN10853209A, the present invention discloses a towel structure and its weaving process, the ground warp and the weft yarn are divided into two groups, the two groups of warp are arranged in the warp cycle in order, the first group of warp and The first group of weft yarns are interwoven on the reverse side of the towel structure to form a pile structure; the second group of ground warp and the second group of weft yarns are interwoven on the front of the product to form an L-shaped warp float structure and a weft float structure; each L-shaped warp The ends of the weft float and weft float tissue are interwoven with the top of the next L-shaped warp float tissue and the weft float long tissue, and then combined into a continuous stepped L-shaped pattern; each adjacent The two sets of continuous stepped L-shaped patterns are staggered by at least one longitude and one weft in the same direction. Compared with traditional towels, the invention has the characteristics of novel and unique patterns, fluffy products, soft hand feeling, etc., and has more excellent breathability.

2) Patent publication number: CN108486751A. The present invention discloses a method for making a herringbone terry fabric, which includes: (1) the steps of preparing raw cotton modal blended yarn and spandex; (2) preparing step (1) The step of weaving the yarn into a fabric on the big circular machine; (3) The step of finishing. The invention does not cause thread breakage during the fabric manufacturing process, and the triangular fabric arrangement in the large circular machine makes the woven fabric good in permeability and beautiful.

3) Patent publication number: CN102747531A. The present invention relates to a method for forming a double-sided jacquard terry fabric and its fabric. The warp knitting machine of this method is equipped with four guide yarn combs, of which 1) combs GB1, combs GB2 above the needle through the full yarn; 2) above the needle bars GB3 follows: first through X ₁ Y ₁ yarns of the first pin, second pin wear X ₂ yarns of Y _2, ..., X _k needle wear the first kind of yarn Y _k, k being a positive integer; 3) needle bars GB4 above is as follows: the first pin through the first X ₁ Z ₁ kind yarn, needle wear X ₂ Z ₂ kinds of yarns, ..., wear X _k needles and Z _k kinds of yarns, k is a positive integer; (2) The comb bar GB1 uses a warp flat structure to form the back terry; the comb bar GB2 forms a braided chain structure; the comb bar GB3 alternately uses weft insertion and warp Plain weave, when the comb bar GB3 uses weft weft, the comb bar GB4 uses warp weave; when the comb bar GB3 uses warp weave, the comb bar GB4 uses weft weave, the back side of the fabric has solid color loops, and the front side Loops are naturally formed into blocks by yarns of different colors.

The above types of towels all have their shortcomings. Woven towels have the most mature development, but because of the structure, the terry is not stable enough; weft knitted towels have problems such as loose and sparse terry, and require special equipment to do; the current There are many types of warp knitting towels, but there are also problems such as unstable fabrics and unobvious terry. Related inventions also do jacquard on these foundations, and there is no breakthrough in weave. Therefore, inventing a new kind of terry weave, which can adjust the terry length, density and elasticity of the terry fabric according to the needs, will certainly have a wide range of Market application prospects.

technical problem

The existing fabric loops are not dense enough.

Technical solution

In order to solve the above technical problems, the present invention provides a new type of warp knitting double needle bed fabric, which has a more dense pile effect.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

A novel warp-knitted double needle bed fabric includes a fabric body woven by a double needle bed warp knitting machine with a front needle bed and a rear needle bed. The fabric body has a pile surface and a bottom surface closely attached to the pile surface The smooth bottom surface of the terry surface includes several single terry loops. The adjacent terry loops of several single terry loops are nested with each other. The single terry loop is a front needle bed and a double needle bed warp knitting machine. The barbed yarns on the back needle bed are woven, and the smooth bottom surface is an elastic structure or an inelastic structure. The non-elastic structure of the smooth bottom surface uses a double needle bed warp knitting machine. The barbed bar GB3 uses non-elastic yarn to walk through the flat or warp pile structure. The structure is formed by weaving, and the elastic structure of the smooth bottom surface is formed by using the double-bed bed warp knitting machine, the comb bar GB6, which is formed by weaving the elastic yarn through the flat structure.

Embroidery jacquard is also knitted on the loop surface.

The height of the single loop is 0.5 mm to 50 mm.

The loop surface is an inelastic structure or an elastic structure. The elastic structure or the inelastic structure of the loop surface is passed through the comb bar GB4 and the comb bar GB5 on the double needle bed warp knitting machine. The needle bed and the back needle bed are made by weaving a number of single terry loops.

The smooth bottom surface is smooth flat cloth, or flat cloth with jacquard shape.

The non-elastic yarn is a chemical fiber filament or staple fiber, and the elastic yarn is a blended yarn, spandex core-spun yarn or spandex.

The linear density of the elastic yarn or non-elastic yarn is between 15D and 420D,

The elastic yarn or non-elastic yarn has a gram weight ranging from 100 grams/square meter to 1000 grams.

The needle density of the double needle bed warp knitting machine is between 10 and 40 needles per inch, preferably 18 to 32 needles.

Beneficial effect

The loops of the present invention are trapped with each other to be more dense, and the fabric can be made elastic or non-elastic, and is used in the fields of clothing, home textiles and the like.

BRIEF DESCRIPTION

Figure 1 is a schematic diagram of the decomposition state of the present invention;

Figure 2 is a schematic front view of the loop surface of the present invention;

Figure 3 is a schematic diagram of an embodiment of the pad yarn movement of the comb bar GB3 of the present invention;

4 is a schematic diagram of an embodiment of the pad movement of the comb bar GB4 and the comb bar GB5 of the present invention;

Fig. 5 is a schematic diagram of an embodiment of the pad yarn movement of the comb bar GB6 of the present invention.

Embodiments of the invention

To further understand the features, technical means, and specific objectives and functions of the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1-5, the present invention discloses a novel warp-knitted double needle bed fabric, which includes a fabric body woven using a double needle bed warp knitting machine with a front needle bed and a rear needle bed. All the knitting needles or part of the knitting needles on the front needle bed of the bed warp knitting machine are looped with spacer yarns, and there are spacer yarns and other combed yarn loops on the rear needle bed, and the spacer yarns are knitted back and forth on the front and back needle beds , Forming the fabric body has the effect of one side loops and one side smooth. Specifically: the fabric body has a loop surface and a smooth bottom surface that is close to the bottom surface of the loop surface, and the loop surface includes several single loops, and adjacent loops among several loops are looped together. The single loop is knitted by using combing yarns on the front needle bed and the rear needle bed of the double needle bed warp knitting machine.

Embroidery jacquard is also knitted on the loop surface, which can be shaped for various types of jacquard.

The height of the monomer loops is between 0.5 mm and 50 mm, and the monomer loops are set to different heights according to different styles.

The loop surface is an inelastic structure or an elastic structure. The elastic structure or the inelastic structure of the loop surface is passed through the comb bar GB4 and the comb bar GB5 on the double needle bed warp knitting machine. The needle bed and the back needle bed are made by weaving a number of single terry loops. The loops are formed by the individual terry loops, making the terry surface more dense.

In addition, the smooth bottom surface is smooth flat cloth, or flat cloth with jacquard shape.

The smooth bottom surface of the fabric body is an elastic structure or an inelastic structure, and the non-elastic structure of the smooth bottom surface is formed by weaving a flat or warp pile structure with a non-elastic yarn through the comb bar of a double needle bed warp knitting machine GB3. The elastic structure is formed by using a double needle bed warp knitting machine, the comb bar GB6 is formed by weaving an elastic yarn through a flat structure. Make the smooth bottom surface have a certain elasticity.

The linear density of the elastic yarn or non-elastic yarn is between 15D and 420D, and the gram weight of the elastic yarn or non-elastic yarn ranges from 100 g/m 2 to 1000 g.

In addition, the needle density of the double needle bed warp knitting machine is between 10 and 40 needles per inch, preferably between 18 and 32 needles.

In the specific weaving, the following methods are used:

1. Yarn warping for warp knitting:

1) Warping of non-elastic yarns:

Warping machine type: Karl Mayer DS 21/30 NC-2, passive yarn feeding.

Warping temperature: 23℃ Warping humidity: 65%

The workshop sets the process parameters under the above temperature and humidity conditions.

2) Warping of elastic yarn:

Warping machine model: Karl Mayer DSE-H21/30 NC-2, active yarn feeding.

Warping temperature: 24℃ Warping humidity: 78%

2. Weaving

Weaving machine model: Karl·Mayer RD7/2-12 EL or other double needle bed warp knitting machine.

Range of machine number: E10-E40

The threading method is full or partial combing.

The yarn used in the fabric: non-elastic yarn or elastic yarn.

For example, in Figures 1, 2, and 3, the structural diagram of the fabric is shown. GB3 uses non-elastic yarn with a closed warp and flat structure, which is exposed on the non-terry side of the fabric. GB4 uses non-elastic yarn and the front and back needle beds form a loop. To form the terry effect, GB5 uses non-elastic yarns, and the front and back needle beds form loops to form the terry effect. GB6 uses elastic yarns to provide the elasticity required by the fabric in the middle of the fabric.

3. Dyeing and finishing

Dry cleaning (or water washing) → reservation → overflow dyeing → dehydration → finishing.

Examples:

Item No.: T9400051

Color: any blue

Model: Double needle bed warp knitting machine RD7/2-12 EL 24GG 138 inch

Raw materials: GB3: PES 50/72 SD DTY;

GB4: PES 50/72 SD DTY;

GB5: PES 50/72 SD DTY

GB6: PU 70D

Yarn drawing: see attached picture 1,2,3

Width: 200CM

Weight: 435GSM

Spandex content: 9%

Physical test parameters (Method LTD 03 pull),

Warp direction: The warp opening is smaller

Weft direction:

Elongation: 70%

Modulus (20% Elongation): 0.275 lbf

Modulus (40% Elongation): 1.424lbf.

It should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, for those skilled in the art, it can still implement the foregoing The technical solutions described in the examples are modified, or some of the technical features are equivalently replaced, but any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection of the present invention Within range.

Claims

A novel warp-knitted double needle bed fabric, including a fabric body woven by a double needle bed warp knitting machine with a front needle bed and a rear needle bed, characterized in that the fabric body has a pile surface and is closely attached The smooth bottom surface of the bottom surface of the terry surface. The terry surface includes several single terry loops. The adjacent terry loops of several single terry loops are nested together. The single terry loop is made of a double needle bed warp knitting machine. The combed yarns of the front needle bed and the rear needle bed are woven, and the smooth bottom surface is an elastic structure or an inelastic structure. The non-elastic structure of the smooth bottom surface uses the double needle bed warp knitting machine. Or the warp knitting structure is formed by weaving, and the elastic structure of the smooth bottom surface is formed by weaving the warp knitting machine GB6 of the double needle bed warp knitting machine with elastic yarn and passing through the flat structure structure.
The novel warp-knitted double needle bed fabric according to claim 1, wherein an embroidered jacquard pattern is knitted on the loop pile surface.
The novel warp-knitted double needle bed fabric according to claim 2, wherein the height of the single pile loop is between 0.5 mm and 50 mm.
The novel warp-knitted double needle bed fabric according to claim 3, characterized in that the pile surface is an inelastic structure or an elastic structure, and the elastic structure or the inelastic structure of the pile surface is passed through the double needle bed warp knitting machine The comb bar GB4 and comb bar GB5 are made of non-elastic yarns or elastic yarns, knitted on the front needle bed and the rear needle bed by weaving several single loops.
The novel warp-knitted double needle bed fabric according to claim 4, wherein the smooth bottom surface is a smooth flat cloth, or a flat cloth with a jacquard shape.
The novel warp-knitted double needle bed fabric according to claim 5, wherein the non-elastic yarn is a chemical fiber filament or staple fiber, and the elastic yarn is a blended yarn, spandex core-spun yarn or spandex.
The novel warp-knitted double needle bed fabric according to claim 6, wherein the linear density of the elastic yarn or non-elastic yarn is between 15D and 420D,

The novel warp-knitted double needle bed fabric according to claim 7, characterized in that the gram weight of the elastic yarn or non-elastic yarn ranges from 100 grams/square meter to 1000 grams.
The novel warp-knitted double needle bed fabric according to claim 8, characterized in that the needle density of the double-needle bed warp knitting machine is between 10 and 40 needles per inch, preferably between 18 and 32 needles needle.