CN112111843A - Freely cut weft-knitted fabric and manufacturing method thereof - Google Patents
Freely cut weft-knitted fabric and manufacturing method thereof Download PDFInfo
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- CN112111843A CN112111843A CN201910541136.6A CN201910541136A CN112111843A CN 112111843 A CN112111843 A CN 112111843A CN 201910541136 A CN201910541136 A CN 201910541136A CN 112111843 A CN112111843 A CN 112111843A
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- 239000004744 fabric Substances 0.000 title claims abstract description 96
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 229920002334 Spandex Polymers 0.000 claims abstract description 95
- 239000004759 spandex Substances 0.000 claims abstract description 95
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000009940 knitting Methods 0.000 claims abstract description 59
- 239000002131 composite material Substances 0.000 claims abstract description 34
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims description 26
- 230000000694 effects Effects 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 15
- 238000009941 weaving Methods 0.000 claims description 11
- 238000012360 testing method Methods 0.000 claims description 7
- 238000009998 heat setting Methods 0.000 claims description 3
- 239000011265 semifinished product Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 238000010008 shearing Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 2
- 230000008520 organization Effects 0.000 claims 1
- 238000000578 dry spinning Methods 0.000 abstract description 12
- 238000005520 cutting process Methods 0.000 abstract description 11
- 230000007547 defect Effects 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000009957 hemming Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 102220384943 c.120G>C Human genes 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009963 fulling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
- D04B1/18—Other fabrics or articles characterised primarily by the use of particular thread materials elastic threads
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/10—Patterned fabrics or articles
- D04B1/102—Patterned fabrics or articles with stitch pattern
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/10—Patterned fabrics or articles
- D04B1/12—Patterned fabrics or articles characterised by thread material
- D04B1/123—Patterned fabrics or articles characterised by thread material with laid-in unlooped yarn, e.g. fleece fabrics
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/10—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyurethanes
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Of Fabric (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The invention provides a free cutting weft knitting fabric and a manufacturing method thereof, wherein the fabric is a single-sided fabric made by a single-sided weft knitting circular knitting machine, the fabric is provided with a flat net part, the flat net part is a composite tissue circulation formed by taking 4 rows and 2 columns of composite jacquard weave as basic tissue units, odd-even paths of the basic tissue units of the flat net part are designed at intervals corresponding to the number of odd-even paths of a looping system, odd-even paths of the basic tissue units are formed into loops and floating threads which are alternated in the same odd path and are arranged in the odd path in a staggered way, even-even paths of the basic tissue units are two-needle looping weave, and the odd-even paths and the even-even paths can be respectively formed by dry spinning spandex wrapped ammonia or composite yarns formed by dry spinning bare yarns and DTY stretch yarns. Therefore, the invention overcomes the defects in the prior art and provides the weft-knitted free-cutting jacquard fabric which is anti-loosening and not easy to curl.
Description
Technical Field
The invention relates to a freely weft-cut knitted fabric and a manufacturing method thereof.
Background
According to the weft-knitted fabric on the market at present, due to the structural characteristics of the fabric, after the fabric is cut, a series of problems such as raveling, curling and the like easily occur to a coil at a cut position. At present, most weft-knitted fabrics need a series of methods such as slitting and hemming, locking and adding a connecting rib opening to solve the problems of raveling and hemming in the process of making clothes. The fabric appearance and the wearing effect are influenced, more cutting loss is caused, and the fabric is not attractive, uncomfortable and not economical, and is obviously contrary to the current concept of pursuing fashion, conciseness and comfort.
The ravel and crimp resistance of double weft knit fabrics is superior to that of single face fabrics, however, in practice, double weft knit fabrics are not as widely used as single face weft knit fabrics in some areas of the garment industry for a variety of reasons.
In the prior art, spandex is added during weft knitting weaving, and a fabric containing spandex is subjected to heat treatment at a certain temperature for a period of time, so that the surfaces of spandex filaments are melted, and the spandex filaments among coils are adhered to each other to form a net structure, thereby realizing the effect that the coil structure is not easy to shed. However, in this manner, the detachability and hemmability of the fabric are mainly dependent on melt blocking of the spandex filaments, and thus are greatly affected by the process temperature and the vehicle speed. If the temperature is lower, the spandex is softened but not melted, the fabric coil is still easy to separate, the edge curling is obvious, and the elasticity is general; if the temperature is higher, the melting degree of spandex is higher, and partial spandex filaments are fused or nearly fused, in this case, the fabric has a certain anti-loosing property, but the elasticity is poor.
Disclosure of Invention
Accordingly, improved free-form weft-knitted fabrics and methods of making the same are sought that overcome the problems associated with prior art anti-run weft-knitted fabrics.
The invention utilizes the performance characteristics of the dry spinning spandex raw material, and designs the specific weft knitting composite jacquard weave and the corresponding weaving parameters on the loom in combination with the performance characteristics, thereby weaving the weft knitting free cutting jacquard fabric which can overcome the defects of the prior art and is anti-raveling and not easy to curl.
In order to achieve the above object, according to one aspect of the present invention, there is provided a method of manufacturing a free-cut weft knitted fabric having a flat net portion, characterized in that the method comprises the steps of:
(1) preparing raw materials: wrapping dry-spun spandex with ammonia, dry-spun spandex bare yarn and DTY stretch yarn;
(2) weaving: weaving a flat net part on a single-side weft circular knitting machine by adopting corresponding machine parameters, wherein the flat net part is a composite tissue cycle formed by taking 4 rows and 2 lines of composite jacquard tissues as basic tissue units, odd-even paths of the basic weave units of the plain net part are designed at intervals corresponding to the number of the odd-even paths of the knitting system, odd-even paths of the basic weave units are formed into tuck stitches and float stitches which alternate in the same odd paths and are staggered among the odd paths by odd-even paths of knitting needles of the knitting system, even-even paths of the basic weave units are formed into two-needle knitting stitches by even-even paths of knitting needles of the knitting system, wherein dry-spun spandex wrapped ammonia or a composite yarn consisting of dry-spun spandex bare yarn and DTY elastic yarn is fed into a strange path knitting needle, and dry-spun spandex wrapped ammonia or a composite yarn consisting of dry-spun spandex bare yarn and DTY elastic yarn is fed into the cross knitting needle;
(3) and (3) fabric post-treatment: after the fabric is woven and taken off the machine, carrying out heat setting treatment on the fabric, wherein the presetting temperature of the fabric is 185-195 ℃ and the time is 60-90S;
(4) and (4) checking: after the fabric is subjected to post-treatment, the fabric enters a semi-finished product workshop, and then the fabric is subjected to shearing, edge curling and raveling inspection tests.
Preferably, dry-spun spandex wrapped ammonia is fed to an odd-path knitting needle, and dry-spun spandex bare yarn and DTY stretch yarn are fed to an even-path knitting needle.
Preferably, dry-spun spandex wrapped ammonia is fed to an alley needle, and dry-spun spandex bare yarn and DTY stretch yarn are fed to an alley needle.
Preferably, the DTY stretch yarn and the dry-spun bare spandex yarn are fed into the same yarn nozzle.
Preferably, the yarn feeding is performed by setting the yarn laying longitudinal angle of the DTY stretch yarn to be larger than the yarn laying longitudinal angle of the bare dry-spun spandex yarn, so that the bare dry-spun spandex yarn is covered with the DTY stretch yarn.
Preferably, the odd and even needles of the knitting system are fed independently and the machine parameters are controlled independently.
Preferably, the free weft-knitted fabric further comprises a pattern part, the odd-way knitting needle of the loop forming system is used for knitting the odd-way knitting of the pattern part into a plain stitch, and the odd-way knitting needle of the loop forming system is used for knitting the even-way knitting of the pattern part into a floating stitch and a tuck stitch.
According to another aspect of the present invention, there is provided a free-cutting weft-knitted fabric, which is a single-sided fabric produced by a single-sided weft circular knitting machine, the fabric having a plain net portion, the plain net portion being a complex stitch loop formed by using a 4-row 2-column complex jacquard weave as a basic stitch unit, odd-even courses of the basic stitch unit of the plain net portion being alternately designed corresponding to the number of the odd-even courses of a knitting system, odd-even courses of the basic stitch unit being formed by odd-even courses of a knitting system such that tucks and floats are alternately arranged in the same odd course and being alternately arranged between the odd courses, even courses of the basic stitch unit being formed by even-even courses of the knitting system such that two needles are formed into a two-needle looping stitch, the odd-even courses being formed by dry-spun spandex wrapped with ammonia or by composite filaments of dry-spun bare spandex and DTY spandex, and the even-road texture is formed by dry-spun spandex wrapped ammonia or a composite yarn consisting of dry-spun spandex bare yarn and DTY stretch yarn.
Preferably, the front side of the plain net part presents the pattern effect of the raw materials of the even-path knitting needles, and the back side of the plain net part presents the pattern effect of the raw materials of the odd-path knitting needles.
Preferably, the odds structure of the plain net part is formed by dry spinning spandex wrapped ammonia, and the even structure of the plain net part is formed by composite yarn formed by dry spinning bare spandex and DTY stretch yarn.
Preferably, the even stitch of the plain net part is formed by dry-spun spandex wrapped ammonia, and the odd stitch of the plain net part is formed by a composite yarn consisting of dry-spun bare spandex and DTY stretch yarn.
Preferably, the DTY stretch yarn is exposed on the front side of the flat mesh portion and covers the bare dry-spun spandex yarn.
Preferably, the free cutting weft-knitted fabric further comprises a pattern part, the odd-path stitch of the pattern part is a plain stitch knitted by an odd-path knitting needle of the knitting system, and the even-path stitch of the pattern part is a floating stitch and a tuck stitch knitted by an odd-path knitting needle of the knitting system.
Drawings
In order to more clearly illustrate the invention, exemplary, but non-limiting, embodiments are described below with reference to the accompanying drawings, in which some embodiments of the invention are depicted.
Fig. 1 schematically shows a structural jacquard weave basic unit of a plain net section according to an embodiment of the present invention.
Fig. 2 schematically shows a schematic yarn feed when dry-spun bare spandex and DTY stretch yarn are fed to an even yarn feeder according to one embodiment of the invention.
Fig. 3 is a schematic diagram showing the arrangement of loops of dry-spun bare spandex and a DTY stretch yarn in a needle hook according to an embodiment of the invention.
Fig. 4 schematically shows a schematic view of the stitch structure of the composite jacquard base unit of the plain mesh portion according to an embodiment of the present invention.
Fig. 5a shows a state diagram of a fabric made of dry-spun spandex raw material and subjected to 25 times of water washing according to the ISO 63304M F standard in a 4-row 2-column composite jacquard structure according to the invention.
Fig. 5b shows the state of the comparative fabric made of 4 rows and 2 lines of composite jacquard weave and wet spandex raw material after being washed 25 times according to the ISO 63304M F standard.
FIG. 5c shows a state of a comparative fabric made of a stitch with 1-needle tuck and 3-needle float and a dry-spun spandex raw material after being washed 25 times according to ISO 63304M F standard.
Detailed Description
The technical solutions in the exemplary embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, are included in the scope of the present invention.
According to the invention, a special composite jacquard weave structure is formed by using the raw materials of dry-spun spandex wrapped ammonia, dry-spun spandex bare yarn and DTY stretch yarn, so that the weft-knitted free-cutting knitted fabric different from the conventional weft-knitted fabric is obtained.
The free cutting fabric comprises a plain net part and an optional pattern part, wherein odd-even paths of a plain net part composite jacquard weave basic unit are designed at intervals corresponding to the number of the odd-even paths of a loop forming system, odd-numbered base structures of the plain net part are designed to be that a stitch tucking and a stitch floating line structure are alternately arranged in the same odd path and are staggered among the odd paths, and even-numbered base structures are flat stitch structures; the odd-path structure of the pattern part is a plain stitch structure, and the even-path structure is a floating line and a tuck stitch structure. The plain net part on the front surface of the fabric presents an even-path raw material effect surface, and the pattern part presents an odd-path raw material effect surface. The covering relation of the raw materials is changed according to the design requirement through the change of the structure, and various required pattern effects, such as a double-color jacquard effect, can be realized.
The free cutting weft knitting fabric is knitted on a single-side weft knitting circular knitting machine. The raw material of the wrapped ammonia is dry-spun spandex wrapped with DTY stretch yarn, and the bare spandex yarn is dry-spun spandex. The dry-spun spandex has good heat resistance and rebound resilience, and is not easy to damage in the fabric post-treatment process.
Fig. 1 shows a schematic structural drawing of a 4 row 2 column composite jacquard basic unit of a plain net section of fabric according to the invention, the weaving direction being from bottom to top in the drawing.
The weave structure unit is designed into 4 rows and 2 columns composite jacquard weave, and odd-even paths are designed at intervals corresponding to the number of paths of a loop forming system. The odd-way foundation structure is that a stitch tuck stitch and a stitch floating stitch are alternately arranged in the same odd way and are staggered between the odd ways, the even-way structure is a plain stitch (two stitches are looped), the front surface of the fabric plain net part presents the effect of the even-way raw material patterns, and the back surface of the fabric presents the effect of the odd-way raw material patterns. And an interlocking effect is formed between the odd-path tissue and the even-path tissue, so that the fabric is endowed with excellent anti-raveling performance.
In one embodiment of the invention, the jacquard yarn (e.g., DTY stretch yarn) is fed into the same nozzle as the bare dry-spun spandex yarn, as shown in fig. 2. Figure 2 schematically shows a weft-knitted single-side jacquard couple carrier and its laying pattern. The yarn guide is provided with two yarn guide holes 1 and 2, the yarn guide hole 1 is used for penetrating bare dry-spun spandex, and the yarn guide hole 2 is used for penetrating jacquard yarns; due to the lay-up longitudinal angle alpha of the jacquard yarn A1Greater than the longitudinal angle alpha of dry-spun spandex bare yarn laying2The knitting needle contacts with the jacquard yarn A firstly and then contacts with the dry-spun spandex bare yarn B in the yarn hooking process when descending; as shown in fig. 3, the bare dry-spun spandex and the jacquard yarn are mutually configured in the needle hook of the knitting needle after the yarn laying is finished and the needle latch of the knitting needle is closed, it can be seen from the diagram that the jacquard yarn a is close to the needle back, and the bare dry-spun spandex B is closer to the needle hook tip, so that the jacquard yarn can be exposed on the front of the fabric in the subsequent knocking-over and looping processes, and the bare dry-spun spandex is completely covered by the jacquard yarn.
The change of the covering relation of the two raw materials is realized by controlling the size of the yarn laying longitudinal angle alpha of the two raw materials at the yarn nozzle.
Besides the yarn laying angle, the design can also consider the influence of the performances of the raw materials (linear density, friction factor, rigidity and the like), the shapes of knitting needles and sinkers, the coil length, the yarn tension, the drawing tension and the like on the configuration relation of spandex and jacquard yarn coils, so as to avoid that the jacquard yarn A can not completely cover the bare spandex yarn B. Otherwise, the defects of silk turning can be generated on the grey cloth, and the problems of color absorption difference, white exposure and the like can also be caused in the subsequent dyeing process, so that the design and color effect of the fabric is greatly reduced.
In this embodiment, the wrapped ammonia raw yarn is fed independently in the odd passes. The dry spinning spandex wrapped ammonia can be formed by winding the outer wrapping nylon filament on the surface of the inner core dry spinning spandex bare filament in a spiral mode, the hand feeling and the appearance of the yarn are provided, the strength of the yarn is mainly determined by the strength of the outer wrapping nylon filament, and the dry spinning spandex core filament provides excellent elastic expansion performance, so that the wrapped ammonia has the excellent characteristics of two raw materials.
Because of the large elastic elasticity of the spandex, in order to obtain better dimensional stability and good anti-run performance of the fabric, odd paths of the flat net part tissue circulation unit are designed in the embodiment that tucks formed by dry-spun spandex wrapped yarns and floating threads are alternated in the same odd path and are staggered among the odd paths, the floating threads enable the transverse extensibility of the fabric to be reduced, the tucks appropriately shorten the length of the floating threads and enable two adjacent coil longitudinal rows to be closer in combination with the excellent shrinkage performance of the dry-spun spandex wrapped yarns, and broken yarns can be blocked by tuck hanging arcs when the fabric runs in the reverse weaving direction. In addition, the couple of the weave circulation unit of the plain net part is designed into two-needle looping, and dry-spun bare spandex yarns in the couple weave form complete loops in each course, so that the connection between adjacent courses is tighter. This not only improves the lateral and longitudinal density of the fabric, but also imparts excellent elasticity and structural stability to the fabric.
In addition, as shown in fig. 4, tucks and floating threads are staggered and combined between odd paths to form a physical interlocking effect between adjacent loops, and the interlocking effect is more prominent by the cohesive force and the friction force formed between the odd path wrapped ammonia raw material and the even path composite yarn, so that the fabric has a more stable structure and is not easy to loose.
The method for manufacturing the weft-knitted freely-cut anti-raveling knitted fabric mainly comprises the following steps:
(1) weaving on a single-side weft circular knitting machine: weaving the plain net part by using the 4 rows and 2 columns of composite jacquard weave as a basic circulation unit, wherein odd-even paths of the basic weave unit are designed at intervals corresponding to the number of the odd-even paths of a loop forming system, odd-numbered base weaves of the plain net part are formed into a needle tuck stitch and a needle floating thread which are alternately arranged in the same odd path and are staggered between the odd paths, and even-numbered weaves are formed into plain weave (two needles are looped). The odd path uses an independent yarn feeding mode of dry spinning spandex covered with spandex yarn, the even path uses a composite yarn feeding mode of dry spinning bare spandex yarn and DTY stretch yarn, and the corresponding loom parameters are adopted for loom knitting.
Preferably, the dry-spun spandex-wrapped ammonia raw material: thickness 51D, gauge (E40D + ND 40D/12F); DTY polyester stretch yarn: the thickness is 75D, and the cation can be dyed; dry spinning bare spandex ammonia: the thickness is 30D. The odd-path yarn feeding amount is 24CM/100N, and the tension is about 6 cN; the yarn feeding amount of the even path is 25CM/100N, and the tension is about 3-5 cN. The raw materials are in proportion: PH50/E25/N25 (50% of polyester stretch yarn, 25% of dry-spun spandex and 25% of nylon).
(2) Post-treatment of the grey cloth: after the grey cloth is knitted off the machine, the grey cloth is subjected to heat setting treatment.
Wherein the pre-setting temperature of the grey cloth is 185-195 ℃, and preferably 185-190 ℃; the time is 60S to 90S. The inventor finds out through research that the adhesion force effect between dry-spun bare spandex filaments and stretch yarns is poor when the temperature is lower than 185 ℃, and the flatness and the dimensional stability of the fabric after shaping are relatively poor; when the temperature is higher than 195 ℃, the odd-path raw material is wrapped with dry-spun spandex in ammonia and the bare dry-spun spandex in the even-path raw material is easy to damage, so that the free cutting performance of the fabric is influenced, and needle-eye-shaped defects are formed on the surface of the fabric. The preset temperature of the grey cloth is set to 185-195 ℃, preferably 185-190 ℃, so that the defects are well overcome.
The pre-shaping of the grey cloth is also very important for realizing the function of the anti-raveling fabric. The step can better strengthen the cohesive force and the adhesive force of the dry spinning bare spandex and the DTY elastic yarn of the couple; meanwhile, the interlocking effect of the ammonia-coated raw materials of the odd path and the composite raw materials of the even path is more stable.
(3) And (4) checking: after the grey cloth is post-treated, the grey cloth enters a semi-finished product workshop, and then the grey cloth is subjected to a test of cutting, curling and raveling.
Fabrics obtained according to the present invention (containing dry-spun spandex and a specific weave structure) were subjected to 25 water wash tests according to ISO 63304M F standard with fabrics not containing the specific weave structure and dry-spun spandex stock of the present invention. According to the standard evaluation, the fabric of the present invention passed 25 washing tests, while the comparative fabric failed the washing test, as shown in table 1. As can be seen from the state of the washed fabric, the anti-raveling performance of the fabric containing the dry-spun spandex and the specific tissue structure obtained according to the invention is obviously superior to that of a comparative fabric.
Table 1: comparative test for Release Performance
While the specification describes the preferred embodiments of the present invention, those skilled in the art will appreciate that modifications and variations may be made to these embodiments without departing from the spirit and scope of the invention. For example, according to still another embodiment of the present invention, dry-spun spandex wrapped ammonia may be fed in the idol, bare dry-spun spandex and DTY stretch yarn may be fed in the odds, or dry-spun spandex wrapped ammonia or a composite yarn composed of bare dry-spun spandex and DTY stretch yarn may be fed in both the odds and the idol, and the manufacturing process may be adaptively changed accordingly.
The present invention includes various combinations of the embodiments or aspects described herein, the scope of which is defined by the appended claims and equivalents thereof.
Claims (9)
1. A method of making a free-cut weft knitted fabric having a flat mesh portion, the method comprising the steps of:
(1) preparing raw materials: wrapping dry-spun spandex with ammonia, dry-spun spandex bare yarn and DTY stretch yarn;
(2) weaving: weaving a flat net part on a single-side weft circular knitting machine by adopting corresponding machine parameters, wherein the flat net part is a composite tissue cycle formed by taking 4 rows and 2 lines of composite jacquard tissues as basic tissue units, odd-even paths of the basic weave units of the plain net part are designed at intervals corresponding to the number of the odd-even paths of the knitting system, odd-even paths of the basic weave units are formed into tuck stitches and float stitches which alternate in the same odd paths and are staggered among the odd paths by odd-even paths of knitting needles of the knitting system, even-even paths of the basic weave units are formed into two-needle knitting stitches by even-even paths of knitting needles of the knitting system, wherein dry-spun spandex wrapped ammonia or a composite yarn consisting of dry-spun spandex bare yarn and DTY elastic yarn is fed into a strange path knitting needle, and dry-spun spandex wrapped ammonia or a composite yarn consisting of dry-spun spandex bare yarn and DTY elastic yarn is fed into the cross knitting needle;
(3) and (3) fabric post-treatment: after the fabric is woven and taken off the machine, carrying out heat setting treatment on the fabric, wherein the presetting temperature of the fabric is 185-195 ℃ and the time is 60-90S;
(4) and (4) checking: after the fabric is subjected to post-treatment, the fabric enters a semi-finished product workshop, and then the fabric is subjected to shearing, edge curling and raveling inspection tests.
2. The method of claim 1, wherein dry-spun spandex wrapped ammonia is fed to odd-path needles and dry-spun spandex bare yarn and DTY stretch yarn are fed to even-path needles.
3. The method of claim 1, wherein dry-spun spandex covered ammonia is fed to an alley needle, and dry-spun spandex bare yarn and DTY stretch yarn are fed to an alley needle.
4. The method according to any of the preceding claims, characterized in that the DTY stretch yarn and the bare dry-spun spandex yarn are fed to the same yarn nozzle.
5. Method according to any one of the preceding claims, characterized in that the odd-numbered needles and the even-numbered needles of the knitting system are fed separately and the machine parameters are controlled separately.
6. A freely cut weft knitting fabric is characterized in that the fabric is a single-sided fabric made by a single-sided weft knitting circular knitting machine, the fabric is provided with a plain net part, the plain net part is a composite tissue circulation formed by taking 4 rows and 2 lines of composite jacquard weave as basic tissue units, odd-even paths of the basic organization units of the plain net part are designed at intervals corresponding to the number of odd-even paths of a looping system, the odd-path stitch of the basic stitch unit is formed by odd-path knitting needles of the stitch forming system to form tucks and floats which alternate in the same odd path and are staggered between the odd paths, the loop stitch of the basic stitch unit is formed into a two-needle loop stitch by a loop needle of the loop-forming system, the strange path tissue is formed by dry-spun spandex wrapped ammonia or a composite yarn consisting of dry-spun spandex bare yarn and DTY stretch yarn, and the even-road texture is formed by dry-spun spandex wrapped ammonia or a composite yarn consisting of dry-spun spandex bare yarn and DTY stretch yarn.
7. The free-form weft-knitted fabric according to claim 6, wherein the front side of the flat net portion exhibits a pattern effect of a material for even-path knitting needles, and the back side of the flat net portion exhibits a pattern effect of a material for odd-path knitting needles.
8. The free-form weft-knitted fabric according to any one of the preceding claims, wherein the open stitch of the flat net portion is formed by dry-spun spandex wrapped ammonia, and the even stitch of the flat net portion is formed by composite yarns formed by dry-spun bare spandex and DTY stretch yarns.
9. The free-form weft-knitted fabric according to any one of the preceding claims, wherein the even weave of the plain mesh portion is formed by dry-spun spandex wrapped ammonia, and the odd weave of the plain mesh portion is formed by composite yarns formed by dry-spun bare spandex and DTY stretch yarns.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910541136.6A CN112111843A (en) | 2019-06-21 | 2019-06-21 | Freely cut weft-knitted fabric and manufacturing method thereof |
| JP2019228432A JP7189119B2 (en) | 2019-06-21 | 2019-12-18 | Weft-knitted fabric that can be freely cut and method for producing the same |
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| JP4860261B2 (en) * | 2005-12-27 | 2012-01-25 | 旭化成せんい株式会社 | Polyurethane elastic fiber |
| JP6808901B2 (en) * | 2017-02-28 | 2021-01-06 | グンゼ株式会社 | Lower body clothing |
| JP6908227B2 (en) * | 2017-03-07 | 2021-07-21 | グンゼ株式会社 | Thick stretch knitted fabric |
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- 2019-12-18 JP JP2019228432A patent/JP7189119B2/en active Active
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| JP2005350800A (en) * | 2004-06-09 | 2005-12-22 | Nisshinbo Ind Inc | Weft knitted fabric for polyurethane elastic fiber blend and method for producing the same |
| CN101564204A (en) * | 2005-04-01 | 2009-10-28 | 郡是株式会社 | Clothes capable of being freely cut |
| CN101496641A (en) * | 2009-02-27 | 2009-08-05 | 山东华润厚木尼龙有限公司 | Technique for producing run-resistant spandex core-spun silk stockings |
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| CN107366080A (en) * | 2017-08-24 | 2017-11-21 | 无锡红豆居家服饰有限公司 | Weft knitting on-run crimping manufacturing method of fabric |
| CN109137249A (en) * | 2018-09-03 | 2019-01-04 | 互太(番禺)纺织印染有限公司 | One kind is double-colored freely to cut out warp-knitted face fabric and its production method and application |
| CN210394719U (en) * | 2019-06-21 | 2020-04-24 | 广州市天海花边有限公司 | Freely cut weft knitting fabric |
Also Published As
| Publication number | Publication date |
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| JP2021001423A (en) | 2021-01-07 |
| JP7189119B2 (en) | 2022-12-13 |
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