CN212505288U

CN212505288U - Novel warp knitting fabric

Info

Publication number: CN212505288U
Application number: CN201922330476.2U
Authority: CN
Inventors: 罗文华; 陈官峰; 吴春雨
Original assignee: Best Pacific Textile Ltd
Current assignee: Best Pacific Textile Ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2021-02-09
Anticipated expiration: 2029-12-23

Abstract

A novel warp knit comprising a fabric body formed by at least three bar knitting with a warp knitting machine, said fabric body comprising a face layer and a bottom layer, wherein: forming a surface layer on the front surface of the fabric body by weaving a group of yarns Y1 consisting of a plurality of yarns by using a first guide bar in a satin weave structure; the second guide bar is utilized to weave a group of yarns Y2 consisting of a plurality of yarns by adopting a variable heavy warp structure, and the third guide bar is utilized to weave a group of yarns Y3 consisting of a plurality of yarns by adopting a missing padding weft structure, and the yarns are formed on the bottom surface of the fabric body together to form a bottom layer; the yarn Y1, the yarn Y2 and the yarn Y3 are mutually connected in a penetrating and sleeving manner; any two or three of yarn Y1, yarn Y2, and yarn Y3 are elastic yarns. The utility model discloses have difficult turn-up, not come loose, longitude and latitude elasticity is greater than or equal to 80% the characteristic, improved the rate of utilization of surface fabric, reduced ready-made clothes cost of manufacture, promoted consumer's ready-made clothes comfort level and aesthetic property.

Description

Novel warp knitting fabric

Technical Field

The utility model belongs to the technical field of the warp knitting surface fabric, a novel warp knitting fabric is related to, specifically speaking need only use ordinary yarn and general production facility and technology in industry, can reach the fabric that is difficult for the turn-up, does not come loose, warp and weft elasticity is greater than or equal to characteristics such as 80%.

Background

At present, knitted fabrics have been widely applied to underwear, outerwear, and production and manufacture of sports and leisure clothes, but most knitted fabrics have the problems of curling edges and easy falling off after cutting, so that the edges of the fabrics, such as neckline, armpits, cuffs, hems, trouser legs and the like, need to be hemmed after cutting, and thus, the fabrics have a lot of wasted places, which not only increases the procedure and time for manufacturing ready-made clothes, but also increases the production cost, and particularly, when the knitted fabrics are used for underwear, consumers can also squeeze the bodies of the clothes due to sewing and hemming treatment of the edges of the fabrics when wearing, forming strangle marks, greatly reducing the wearing comfort of the consumers, and influencing the wearing aesthetic property.

Therefore, the fabric with random cutting is more and more favored by clothing manufacturers and consumers, and by inquiring about the material of the clothing fabric industry, the following 4 patents relate to the fabrics:

CN109137249A discloses a two-color free-cutting warp-knitted elastic fabric, which is woven by using two guide bars of a warp knitting machine in cooperation with a specific yarn threading manner, wherein the first guide bar is made of bright nylon and circular light CDP yarn, and the second guide bar is made of spandex elastic yarn. The two guide bars are both in 2-needle opening warp flat weave, the yarn laying directions of the two guide bars are the same, and then the effect of freely cutting and having different colors at different angles is achieved through a special dyeing process. The fabric uses different raw materials, adopts a two-needle opening warp-flat structure, and the directions of the two guide bars for yarn laying are the same, so that the design and variety of the freely cut fabric are increased, but the fabric is easy to crack and has serious weft curling due to the same-direction opening warp-flat structure as known in the industry.

CN109881350A discloses a freely cut warp-knitted elastic fabric, which is knitted by two guide bars of a warp knitting machine, and respectively adopts non-elastic yarns and elastic yarns, the first guide bar adopts a two-needle warp-flat structure, the second guide bar adopts a two-needle warp-flat structure in the same direction, so as to achieve the effect of freely cutting, the defect of the freely cut fabric is the same as that of CN109137249A, that is, the known in the industry, the two guide bars both adopt the structure of the two-needle warp-flat structure in the same direction, and have a larger risk of cracking and serious weft curling.

CN201031291Y discloses a fabric structure reinforced knitted fabric, this utility model provides an improve and contain two sley bars all be the method that the warp knitting including flat structure tears and the self-propelled problem of coming loose, this method proposes that the fabric need contain two kinds of at least raw materials, one of them is the spandex, and the melting point of other raw material yarn is higher than the melting point of spandex yarn, utilizes the spandex yarn can melt after high temperature, forms the adhesion structure to improve the easy problem of tearing and coming loose by oneself of this type of fabric. However, when the method is used, the melting points of different raw materials need to be different, and the limitation of the raw materials is large; the method has the advantages that the melting temperature of the spandex cannot be too high or too low, the spandex is too high or is fused and becomes brittle, the spandex cannot be melted due to too low temperature, and the effect of structure reinforcement cannot be achieved, so that the method is very limited in use, the cracking problem before shaping cannot be solved, and the defect that the CN109137249A and the CN109881350A are easy to crack in structures cannot be fundamentally solved.

CN110042551A discloses a fabric difficult to curl and free to cut, which is knitted by two guide bars of a warp knitting machine in a full-penetration mode, wherein the first guide bar adopts a warp-pile structure, nylon yarns are used, the second guide bar adopts a double-warp-flat structure, spandex yarns are used, the yarn feeding directions of the two guide bars are the same or opposite, namely, the chain block of the first guide bar is 1-0/2-3//, and the chain block of the second guide bar is 3-1/0-2// or 2-0/1-3/. The random cut fabric improves the defect that CN109137249A and CN109881350A are easy to crack structurally, but creates new problems: the structure of the warp and the heavy warp is easy to fluff and fall down, and has poor hand feeling and poor elasticity when touching hands.

The above 4 fabrics are all free cutting (i.e. random cutting) effects achieved by using two guide bars, using warp flat structure, or a combination of a modified warp flat structure and a heavy warp structure, but have the following disadvantages known in the art:

a. the crack is easy to occur in the production process;

b. the finished product has poor hand feeling and poor elasticity;

c. the latitudinal curling is obvious.

Just because the defects are not effectively solved, the fabric cut randomly is difficult to be produced and applied practically, and the higher and higher consumption requirements of the market cannot be met.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a novel warp knitting fabric.

In order to solve the technical problem, the utility model discloses take following technical scheme:

a novel warp knit comprising a fabric body formed by at least three bar knitting with a warp knitting machine, said fabric body comprising a face layer and a bottom layer, wherein:

forming a surface layer on the front surface of the fabric body by weaving a group of yarns Y1 consisting of a plurality of yarns by using a first guide bar in a satin weave structure;

the second guide bar is utilized to weave a group of yarns Y2 consisting of a plurality of yarns by adopting a variable heavy warp structure, and the third guide bar is utilized to weave a group of yarns Y3 consisting of a plurality of yarns by adopting a missing padding weft structure, and the yarns are formed on the bottom surface of the fabric body together to form a bottom layer;

the yarn Y1, the yarn Y2 and the yarn Y3 are mutually connected in a penetrating and sleeving manner;

any two or three of yarn Y1, yarn Y2, and yarn Y3 are elastic yarns;

the first guide bar, the second guide bar and the third guide bar respectively comprise at least one guide bar.

The surface layer comprises a bidirectional looping structure, a first guide bar is adopted to sequentially loop on adjacent N knitting needles along one direction, and then the knitting needles are sequentially looped in the opposite direction to form the bidirectional looping structure, so that the front surface of the fabric body is formed.

The warp satin weave structure is at least a three-needle warp satin weave, namely N is required to be more than or equal to 3 when the first guide bar forms a loop on N adjacent knitting needles.

The warp satin weave structure of the surface layer comprises a single warp satin weave structure and a warp satin variant weave structure, and the warp satin variant weave structure refers to that: and taking the warp satin weave of the first guide bar as the basic weave of the jacquard guide bar, and when weaving patterns, deviating each row according to a pattern weaving process to form the weave.

The variable heavy warp structure in the bottom layer is a four-row variable heavy warp structure, a first row continuously forms two loops on 1 and 2 adjacent knitting needles of the second guide bar, a second row forms a loop on the 2 nd knitting needle, a third row continuously forms two loops on 2 and 3 adjacent knitting needles, and a fourth row forms a loop on the 2 nd knitting needle.

The pad-lacking weft-inserting organization structure in the bottom layer is a single-needle pad-lacking weft-inserting organization, a first row is not knitted on a single knitting needle, a second row is weft-inserted, a third row is not knitted, and a fourth row is weft-inserted.

Yarn Y1 is a non-elastic yarn with a linear density between 10D and 140D, and yarn Y2 and yarn Y3 are both elastic yarns.

Yarn Y1 is an elastic yarn having a linear density of between 20D and 70D, and at least one of yarn Y2 and yarn Y3 is an elastic yarn.

Yarn Y2 is an elastic yarn having a linear density of between 20D and 70D, and at least one of yarn Y1 and yarn Y3 is an elastic yarn.

Yarn Y2 is a non-elastic yarn with a linear density of 10D-140D, and yarn Y1 and yarn Y3 are both elastic yarns.

Yarn Y3 is an elastic yarn having a linear density of between 20D and 560D, and at least one of yarn Y1 and yarn Y2 is an elastic yarn.

The warp and weft turned edge of the fabric body is less than or equal to 45 degrees, and the warp and weft elasticity is more than or equal to 80 percent.

The linear density of the knitting needles of the warp knitting machine is 28-44/inch.

Compared with the prior knitted fabric, the beneficial effects of the utility model reside in that:

1. the warp satin weave formed by weaving the yarns of the first guide bar is a surface weave to form a surface layer, the extensibility is better than that of a common warp velvet and a common warp diagonal weave, the anti-raveling performance is better than that of a common warp plain weave, and a cross grain texture appearance is formed on the surface of the fabric, so that the fabric has a certain decorative effect;

2. the second guide bar is knitted to form a variable heavy warp structure which is a part of structure, the loops are compact, and the anti-raveling performance and the extensibility are better than those of a common heavy warp flat structure;

3. and the third guide bar is used for knitting yarns to form a pad-lacking weft-inserting structure to form another part of ground structure, so that the internal stress of the fabric is balanced, and the radial retraction and tear resistance of the fabric are improved.

4. The fabric body is formed by the surface texture and the ground texture which are woven by the yarns of the three guide bars, the coils of the surface texture and the ground texture are mutually stretched and restrained, after the fabric passes through production equipment and processes which are general in the industry, the internal stress of the body is mutually balanced, the fabric can achieve the effect of no edge curling, the coils of the three guide bars are mutually interwoven and sleeved, the elasticity and the tearing resistance of the fabric are improved while the internal stress of the fabric is balanced, the arbitrary cutting effect is achieved, the hemming working procedure is reduced when the ready-made clothes is manufactured, the use rate of the fabric is improved, the manufacturing cost of the ready-made clothes is reduced, and meanwhile, the wearing comfort level and the attractiveness of consumers are improved.

Drawings

FIG. 1 shows three adjacent needles in the knitting process of the embodiment of the present invention;

FIG. 2 is a first step of the jacquard bar weaving a first course of basic stitches according to an embodiment of the present invention;

FIG. 3 is a second step diagram of the jacquard bar weaving the first course of basic stitches according to the embodiment of the present invention;

FIG. 4 is a third step of the jacquard bar weaving the first course of basic stitches according to the embodiment of the present invention;

FIG. 5 is a diagram of a fourth step in the practice of the present invention when the Jacquard guide bar is weaving the first course of basic stitches;

FIG. 6 is a basic organization diagram of JB1:1 and JB2:1 jacquard in accordance with an embodiment of the present invention;

FIG. 7 is a schematic diagram of a part of the basic structure of embodiments of the present invention after the basic organization of JB1:1 and JB2:1 Jacquard;

fig. 8 is a GB3 organization schematic diagram of an embodiment of the invention;

fig. 9 is a schematic organization diagram of GB4 according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiment of the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-9, a novel warp knit fabric comprises a fabric body formed by at least three guide bars of a warp knitting machine, wherein the fabric body comprises a surface layer and a bottom layer, and wherein:

the first guide bar is utilized to weave and form a surface layer on the front surface of the fabric body by a group of yarns Y1 consisting of a plurality of yarns in a satin weave structure.

The second bar is used for weaving with a group of yarns Y2 consisting of a plurality of yarns by adopting a variable heavy warp structure, and the third bar is used for weaving with a group of yarns Y3 consisting of a plurality of yarns by adopting a missing padding weft structure, and the yarns are formed together on the bottom surface of the fabric body to form a bottom layer. The number of the lapping yarn with the changed weave structure is 3-1/1-2/0-2/2-1//, as shown in the attached figure 8. The number of the filling yarn of the lack filling weft insertion weave structure is 1-1/0-0/0-0/1-1//, as shown in the attached figure 9.

The yarn Y1, the yarn Y2 and the yarn Y3 are mutually connected in a penetrating and sleeving manner, so that the internal force of the fabric body is balanced, and the fabric has the characteristics of difficult edge curling, no looseness and warp and weft elasticity of more than or equal to 90 percent.

The first guide bar, the second guide bar and the third guide bar respectively comprise at least one guide bar, namely the whole body can be woven by adopting three guide bars, or four guide bars, or other numbers.

The surface layer comprises a bidirectional looping structure, a first guide bar is adopted to sequentially loop on adjacent N knitting needles along one direction, and then the knitting needles are sequentially looped in the opposite direction to form the bidirectional looping structure, so that the front surface of the fabric body is formed. The satin weave structure is at least three-needle satin weave, namely N is required to be more than or equal to 3 when a first guide bar forms a loop on N adjacent knitting needles, and as shown in the attached drawing 1, three adjacent knitting needles are respectively a knitting needle 101, a knitting needle 102 and a knitting needle 103. As shown in figure 6, the structure of the three-needle opening warp section is set, and the yarn laying number can be 2-3/2-1/1-0/1-2//.

Any two or three of yarn Y1, yarn Y2, and yarn Y3 are elastic yarns, specifically any one of the following:

1. yarn Y1 is a non-elastic yarn with a linear density between 10D and 140D, and yarn Y2 and yarn Y3 are both elastic yarns.

2. Yarn Y1 is an elastic yarn having a linear density of between 20D and 70D, and at least one of yarn Y2 and yarn Y3 is an elastic yarn.

3. Yarn Y2 is an elastic yarn having a linear density of between 20D and 70D, and at least one of yarn Y1 and yarn Y3 is an elastic yarn.

4. Yarn Y2 is a non-elastic yarn with a linear density of 10D-140D, and yarn Y1 and yarn Y3 are both elastic yarns.

5. Yarn Y3 is an elastic yarn having a linear density of between 20D and 560D, and at least one of yarn Y1 and yarn Y2 is an elastic yarn.

Any one of the above yarn combination schemes is selected to ensure that two yarns are elastic yarns at the same time.

The warp and weft turned edge of the fabric body is less than or equal to 45 degrees, and the warp and weft elasticity is more than or equal to 80 percent. The linear density of the knitting needles of the warp knitting machine is 28-44/inch.

The following is illustrated by way of example.

This embodiment is woven on a jacquard station, using a total of two jacquard bars, two ground bars, of which the jacquard bars are marked JB1:1 and JB2:1, and the two ground bars are marked GB3 and GB 4.

Raw materials: the two jacquard guide bars are made of 30D/34F chinlon, the elastic spandex yarn adopted by GB3 is 40 deniers, and the elastic spandex yarn adopted by GB4 is 140 deniers.

The threading mode: full puncture

Warping yarns:

warping of a.30D/34F chinlon:

the warping machine type: karl Mayer DS 21/30NC-2, negative feed

Warping temperature: 23 deg.C

Warping humidity: 65 percent of

And (3) setting process parameters in the workshop under the conditions of the temperature and the humidity, and determining whether to perform oiling treatment on the yarns according to actual conditions.

b, warping of 40 and 140 denier spandex elastic yarns:

the warping machine type: karl Mayer DSE-H21/30NC-2, positive feed.

Warping temperature: 24 deg.C

Warping humidity: 78 percent of

The warping draft of 40 denier spandex elastic yarn is 1.6

The warping draft of 140 denier spandex elastic yarn is 1.5

And setting process parameters in the workshop under the conditions of the temperature, the humidity and the drafting.

Weaving on a loom:

weaving conditions are as follows: the temperature is 25 ℃, and the humidity is 65%

Weaving machine: warp knitting raschel jacquard, type: vertical page of RSJ5/1E 28130

And (3) a weaving process:

1. jacquard weaving process: the jacquard bar is not fixed in the knitting process due to the pattern, but the overall knitting process is largely different from the basic structure, and only the jacquard basic structure will be described below as an example. The jacquard basic weave of the embodiment is formed by knitting jacquard yarns on three

adjacent needles

101, 102 and 103 from left to right, as shown in figure 1; four courses in total, the first course is knitted on the knitting needle 101; the first step is as shown in figure 2: the needle body 1 and the needle core 2 are at the lowest position, the sinker 3 moves forward to push the old coil away from the moving line of the needle, the needle body starts to rise, then the needle core also starts to rise, the two gradually separate, the needle opening 4 is opened, and the old coil is retreated onto the needle rod. The sinker holds the old coil by a throat, the yarn guide needle 5 starts to swing backwards to prepare for carrying out yarn laying before the needle; second step, as in fig. 3: after the needle body and the needle core are lifted to the highest position, the needle body and the needle core are static for a period of time, the yarn guiding needle is swung to the forefront position of the knitting needle, a needle is transversely moved from right to left to prepare for yarn padding before the needle, the yarn guiding needle is swung back to the back position of the needle at the moment, the yarn padding is completed in a needle opening opened by the yarn padding, and the needle body is lowered; third, as shown in fig. 4: after the needle body descends for a certain distance, the needle core also begins to descend, but the speed is slower than that of the needle body until the hook tip of the needle hook meets the head end of the needle core, the needle opening is completely closed, the old thread is sleeved on the yarn, and the sinker rapidly retreats; step four, as shown in fig. 5: the needle body and the needle core descend at the same speed, the needle hook hooks the yarn to bend the yarn, when the needle head is lower than the sinker belly, the old loop is taken off from the needle head, and the old loop and the needle core continue to descend to gradually bend to the required length to form a new loop. The sinker is in the last position and the guide needle is stationary in the foremost position. The sinker moves forward to hold the old loop and push the old loop away from the moving line of the needle for traction, and the yarn guide needle moves a needle from left to right behind the needle to move the needle back and forth to prepare for the next course of yarn laying. The second course is knitted on the knitting needle 102, the first and third steps are the same as the first course, the second step is that the yarn guide needle swings from left to right, and the fourth step is that the yarn guide needle does not transversely move left and right; the third row is knitted on the knitting needle 103, the first step and the third step are the same as the first row, the second step swings from left to right, and the fourth step swings from right to left; the fourth course is knitted on the knitting needle 102, the first, third and fourth steps are the same as the first course, the yarn guide needle of the second step swings from right to left, and the fourth step does not transversely move left and right. Thus, basic group weaves of jacquard guide bars JB1:1 and JB2:1, namely three-stitch open warp satin weaves and chain blocks of 2-3/2-1/1-0/1-2//, are obtained, as shown in figure 6.

Under the influence of jacquard process, when the jacquard pattern part is woven, the structure of the jacquard guide bar is subjected to certain structural variation on the basis of the basic structure, and fig. 7 is a small part of the structure after structural variation.

GB3 knitting process, this example GB3 is a loop of yarn on three

needles

101, 102, 103 adjacent from left to right, with four courses in a loop. The knitting process is as follows, a first course is knitted on the knitting needle 101, the first step and the third step are the same as the first step and the third step when knitting on the jacquard guide bar, after the second step guide needle is swung to the forefront position of the knitting needle, the guide needle transversely moves two needles from left to right, the other processes are the same as the second step when knitting on the jacquard guide bar, and the fourth step guide needle does not transversely move left and right. The second course is knitted on the knitting needle 102, the first step and the third step are the same as the first step and the third step when knitting on the jacquard guide bar, the guide needle moves two needles from right to left after the guide needle of the second step is swung to the forefront position of the knitting needle, other processes are the same as the second step when knitting on the jacquard guide bar, and the guide needle moves one needle from left to right at the fourth step. The third course is knitted on the knitting machine 103, the first step and the third step are the same as the first step and the third step when knitting with the jacquard guide bar, the guide needle moves two needles from right to left after the guide needle of the second step is arranged at the most front position of the knitting needle, other processes are the same as the second step when knitting with the jacquard guide bar, and the guide needle of the fourth step does not move left and right. The fourth course is knitted on the knitting needle 102, the first step and the third step are the same as the first step and the third step when knitting on the jacquard guide bar, the guide needle moves two needles from left to right after the guide needle of the second step is swung to the forefront position of the knitting needle, other processes are the same as the second step when knitting on the jacquard guide bar, and the guide needle moves one needle from right to left in the fourth step. Thus forming a varying repeating pattern with a chain length of 3-1/1-2/0-2/2-1//, as shown in FIG. 8.

GB4 knitting process, this example GB4, is a single needle knitting of the yarn, with four courses in one cycle. The weaving process is as follows: the first step and the third step of the first course are the same as the first step and the third step when knitting with the jacquard guide bar, the guide needle does not transversely move left and right after the guide needle of the second step is swung to the most front position of the knitting needle, other processes are the same as the second step when knitting with the jacquard guide bar, and the guide needle of the fourth step does not transversely move left and right. The first step and the third step of the second row are the same as the first step and the third step when knitting with the jacquard guide bar, the guide needle does not shift left and right after the guide needle of the second step is swung to the forefront position of the knitting needle, other processes are the same as the second step when knitting with the jacquard guide bar, and the guide needle of the fourth step transversely moves one needle from left to right. The first step and the third step of the third row are the same as the first step and the third step when knitting with the jacquard guide bar, the guide needle does not shift left and right after the guide needle of the second step is swung to the most front position of the knitting needle, other processes are the same as the second step when knitting with the jacquard guide bar, and the guide needle of the fourth step does not shift left and right. The first step and the third step of the fourth course are the same as the first step and the third step in the knitting process of the jacquard guide bar, the guide needle does not shift left and right after the guide needle of the second step is swung to the forefront position of the knitting needle, other processes are the same as the second step in the knitting process of the jacquard guide bar, and the guide needle of the fourth step transversely moves one needle from right to left. Thus forming a pad-lacking weft-inserting organization, the chain blocks are 1-1/0-0/0-0/1-1//, as shown in figure 9.

The back-end production flow: open width washing → high temperature reservation → dyeing → dehydration → finishing

Open width water washing equipment: gaole oil removing washing machine.

Open width water washing technological parameters:

high temperature predetermined equipment: m0NFORTS forming machine

High temperature predetermined process parameters

Dyeing equipment: and the overflow dyeing machine is used for carrying out dyeing treatment according to the required color.

And (3) finishing equipment: m0NFORTS forming machine

Performance testing

a. Edge curl test

The conventional hemming test method is to cut a cloth into a shape like a Chinese character 'mi', manually pull each edge strip, and observe the hemming condition by naked eyes, but in actual conditions, the ready-made clothes are often pulled for many times, and the visual observation is greatly influenced by subjective consciousness. The conventional test method is not standard and unstable, and the test requirement of the excellent clothing library guest on the fabric edge rolling performance is known to be strict, so the embodiment adopts the test method of UNIQLO, specifically, a test sample of 1cmX20CM is taken, the clamping distance is 10cm, the radial test sample is taken after being stretched to 150% of the original length, the test sample is taken, the test sample is stretched to 60% of the original length in the weft direction, the test sample is kept for 1min, then the test sample is returned to the original point, the test sample is kept for 3min, and the cycle is repeated for 3 times. The warp and weft turned edge of the fabric body is less than or equal to 45 degrees through testing.

b. Run-off test

Cut off in the fabric according to the similar Chinese character 'mi', and the cut-off part has no run-off phenomenon.

c. Elasticity test

In the opening test of the embodiment, an LTD03 test method is adopted to test the edges and the middle parts of the full width of the fabric by sampling plates respectively. The total number of the radial 2 test samples is marked as 1 and 3, the latitudinal 2 test samples is marked as 2 and 4, wherein the taking and handling positions of 1 and 2 are positioned at 1/4 of the full-width cloth plate, the taking and handling positions of 3 and 4 are positioned at 1/2 of the full-width cloth plate, and the specific test conditions are as follows

Testing equipment: Zwick/Roell ZO.5 pulling machine

And (3) testing environment: the temperature is 21 +/-1 ℃, and the relative humidity is 65% +/-2%. The test specimens were conditioned for at least 4 hours prior to testing.

Test sample size: width: length of 7.62 cm: 25.4cm

Loading: 7.5lbf

Clipping: 1.27cm

Stretching speed: 20 inch/min

And (4) circularly stretching twice.

The openness of two test samples in the radial direction of the fabric is 165% and 168.7%, the openness of two test samples in the weft direction of the fabric is 103.6% and 105.1%, and the elasticity of the fabric in both the warp direction and the weft direction is more than 80%.

Example 2

Compared with the example 1, the example only changes the GB4 spandex elastic yarn to 105 deniers, other conditions and production procedures are the same as the example 1, the hemming and releasing performance of the fabric is the same as the example 1, the sampling position and the test conditions in the opening degree test are the same as the example 1, and the test results are as follows: the openness of two test samples in the radial direction of the fabric is 123.3% and 124.1%, the openness of two test samples in the weft direction of the fabric is 184.7% and 171.0%, and the elasticity of the fabric in the warp direction and the weft direction is both larger than 80%.

To sum up, the utility model provides a pair of novel warp knitting surface fabric has difficult turn-up, does not break away and longitude and latitude elasticity is greater than or equal to 80% advantage. Compared with the existing fabric cut at will, the fabric can achieve the characteristics of difficult curling and non-loosening and good elasticity in the warp and weft directions only by adopting common yarns and passing through production equipment and processes which are general in the industry, and can be more widely applied to the production of ready-made clothes.

It should be noted that the above is only a preferred embodiment of the present invention, and the present invention is not limited to the above, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments can be modified or some technical features can be replaced with equivalents, but any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel warp knit fabric comprising a fabric body formed by at least three guide bars of a warp knitting machine, characterized in that the fabric body comprises a face layer and a bottom layer, wherein:

any two or three of yarn Y1, yarn Y2, and yarn Y3 are elastic yarns;

2. The novel warp knit fabric according to claim 1 wherein the face layer includes a bi-directional knit structure formed by sequentially knitting adjacent N needles with a first bar in one direction and then in an opposite direction to form the bi-directional knit structure forming the front face of the fabric body.

3. Novel warp knit fabric according to claim 2, characterized in that said satin weave is at least a three-needle satin weave, i.e. the first bar has to satisfy N ≧ 3 for the looping on the adjacent N needles.

4. The novel warp knit fabric according to claim 3, wherein the satin weave structure of the face layer includes a single satin weave structure and a satin variant weave structure, and the satin variant weave structure is: and taking the warp satin weave of the first guide bar as the basic weave of the jacquard guide bar, and when weaving patterns, deviating each row according to a pattern weaving process to form the weave.

5. The novel warp knit fabric according to claim 1 wherein the varying repeat structure in the bottom layer is a four course varying repeat, a first course forming two loops in succession on adjacent 1, 2 needles on the second bar, a second course forming one loop on 2 nd needle, a third course forming two loops in succession on adjacent 2, 3 needles, and a fourth course forming one loop on 2 nd needle.

6. A novel warp knit fabric as claimed in claim 1 wherein said miss-fill stitch configuration in said bottom layer is a single needle miss-fill stitch configuration with a first course not engaged, a second course engaged, a third course not engaged and a fourth course engaged on a single needle.

7. Novel warp knit according to claim 1, characterized in that yarn Y1 is a non-elastic yarn with a linear density between 10D and 140D, and both yarn Y2 and yarn Y3 are elastic yarns.

8. The novel warp knit fabric of claim 1 wherein yarn Y1 is an elastic yarn having a linear density between 20D and 70D and at least one of yarn Y2 and yarn Y3 is an elastic yarn.

9. The novel warp knit fabric of claim 1 wherein yarn Y2 is an elastic yarn having a linear density between 20D and 70D and at least one of yarn Y1 and yarn Y3 is an elastic yarn.

10. The novel warp knit fabric according to claim 1, wherein yarn Y2 is a non-elastic yarn having a linear density of between 10D and 140D, and both yarn Y1 and yarn Y3 are elastic yarns.

11. The novel warp knit fabric of claim 1 wherein yarn Y3 is an elastic yarn having a linear density of between 20D and 560D and at least one of yarn Y1 and yarn Y2 is an elastic yarn.

12. The novel warp knit fabric according to any one of claims 1 to 11, wherein the warp and weft crimping of the fabric body is less than or equal to 45 °.

13. Novel warp knit according to any one of claims 1 to 11, characterized in that the warp knitting machine needles used have a linear density of from 28 to 44 needles/inch.

14. Novel warp knit according to any one of claims 1 to 11, characterized in that the fabric non-detachability refers to the following two aspects:

in any link from weaving to a finished product, when yarn breakage occurs or the fabric body is cut, the fabric body cannot automatically split into two parts along the fracture part under the condition that the fabric body is not intentionally torn by man-made or mechanical force;

the finished fabric is cut into a shape like a Chinese character 'mi' along the upper, lower, left, right, upper right, lower right, upper left and lower left, and no raveling occurs at any cut place.

15. Novel warp knit fabric according to any one of claims 1 to 11, characterized in that the elasticity in warp and weft direction of the fabric is equal to or greater than 80%.