Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a kind of realization monochrome or polychrome, light, ventilative, comfortable, healthy, environmental protection and energy-conservation, between top layer and bottom, without monochrome or the polychrome double-layer partition jacquard weave warp knitting cloth of middle support layer, the present invention also provides the braid method of realizing irregular braiding between this top layer and bottom.
Technical scheme of the present invention is: the braid method of a kind of monochrome or polychrome double-layer partition jacquard weave warp knitting cloth, and described warp knitting cloth weaves on two-needle bar jacquard warp, and described braid method comprises the following steps:
(1) adopt the figured pattern of computer design warp knitting cloth;
(2) braiding is prepared: described warp knitting machine configuration six, yarn guiding chase comb, is arranged and is followed successively by sley bar GB1, Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4, Jacquard sley bar JB5 and sley bar GB6 after slave forward direction machine, wherein:
A) sley bar GB1 and sley bar GB6 adopt the yarn guide needle block of full plane No.; Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 and Jacquard sley bar JB5 adopt the yarn guide needle block of half plane No.;
B) the full threading yarn of the pin of described sley bar GB1 and sley bar GB6; Pin on described Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 and Jacquard sley bar JB5 is all worn 238 yarns, half pin threading yarn not of the pin threading yarn of half, and the pin interval of the pin of threading yarn and not threading yarn arranges; The warp run-in of yarn is 1000-2800mm/ lacquer;
C) described sley bar GB1 adopts pillar stitch; Described Jacquard sley bar JB2 and Jacquard sley bar JB3 adopt the identical yarn that moves needle method and same color, and the needle method that moves adopting is pillar stitch, warp plain stitch or through suede tissue; Described Jacquard sley bar JB4 and Jacquard sley bar JB5 adopt the identical yarn that moves needle method and same color, and the needle method that moves adopting is pillar stitch, warp plain stitch or through suede tissue; Described sley bar GB6 adopts pillar stitch;
D) described sley bar GB1 braiding forms the top layer of warp knitting cloth; Described sley bar GB6 braiding forms the bottom of warp knitting cloth; Described Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 jointly weave and are connected top layer and bottom with Jacquard sley bar JB5; Between top layer and bottom, connect yarn, or connect yarn and be not connected yarn and be arranged alternately, do not connect yarn place formation wall;
(3) input parameter on jacquard warp, knits, and obtains the double-layer partition jacquard weave warp knitting cloth of predetermined pattern.The present invention adopts above braid method, configures six yarn guiding chase combs, and wherein, sley bar GB1 and sley bar GB6 are and comb, and Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 and Jacquard sley bar JB5 are jacquard comb.
The present invention adopts above braid method, the warp knitting cloth obtaining has top layer and bottom, and all there is jacquard weave on the surface of top layer and bottom, and decorative pattern differs, between top layer and bottom, use yarn to connect, or be used alternatingly and connect yarn and non-connection yarn line balance yarn-using amount, so that form the interval of irregular connection between top layer and bottom, that the double-layer jacquard warp knitting cloth obtaining has is light, ventilative, comfortable, healthy, environmental protection etc. is multi-functional.By braid method of the present invention, not only allow woven cloth there is beautiful picture on surface, also given the special performance of warp knitting cloth top layer, interval and bottom, greatly increased the demand in market.
Described step (3) afterwards, also comprise staining procedure: the woven cloth that step (3) is obtained is put into dye vat, drop into dyestuff and the white anti-fouling agent of corresponding style color, dye vat temperature is increased to 98-102 ℃, is incubated 1 hour, continue to improve dye vat temperature to 118-122 ℃, be incubated 1 hour, again improve dye vat temperature to 128-132 ℃, be incubated 1 hour, complete gauze dyeing.
Further, also disposing the 7th yarn guiding chase comb on warp knitting machine of the present invention, is sley bar GB7, and sley bar GB7 adopts the yarn guide needle block of full plane No., and the pin of sley bar GB7 is worn 476 yarns; Sley bar GB7 adopts inlaid thread tissue or through suede tissue.
Described Jacquard sley bar JB2 and Jacquard sley bar JB3 jacquard weave on the first needle-bar of two-needle bar jacquard warp, these two sley bars do not participate in other sley bar braidings, so warp run-in is consistent; Jacquard sley bar JB4 and Jacquard sley bar JB5 jacquard weave on the second needle-bar of two-needle bar jacquard warp, synchronously also on the first needle-bar, participate in braiding, play local connection and be not connected, forming cloth cover has the interval of connection and is not connected interval, so whole tension force will change, have tie point place tension force large, connectionless point place tension force is little, so the tension force of the yarn that Jacquard sley bar JB4 and Jacquard sley bar JB5 wear carries out tension compensating by double-layer spring compensation arrangement.Meanwhile, also can carry out the well-regulated whole tune tension force of large area by the segmentation warp let-off, and the random adjustment tension force of local small size can only lean on art flower type and spring leaf to compensate.
In the present invention, because of between the top layer of the woven cloth that obtains of braiding and bottom, adopt yarn to be connected, or adopt yarn connection and do not adopt yarn to be connected to be arranged alternately, to make whole warp run-in reach the effect of balance.And existing common loop selection cloth adopts intermediate layer (supporting layer) to connect, between the top layer of woven cloth and bottom, cannot accomplish irregular connection.
Further, sley bar GB1 of the present invention adopts the top layer of pillar stitch's braiding warp knitting cloth; Sley bar GB6 adopts the bottom of pillar stitch's braiding warp knitting cloth; Sley bar GB7 adopts inlaid thread tissue or through suede tissue, described Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 and Jacquard sley bar JB5 all adopt warp plain stitch's braiding to be connected top layer and bottom.
Further, sley bar GB1 of the present invention adopts the top layer of pillar stitch's braiding warp knitting cloth; Sley bar GB6 adopts the bottom of pillar stitch's braiding warp knitting cloth; Sley bar GB7 adopts inlaid thread tissue or through suede tissue, described Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 and Jacquard sley bar JB5 all adopt pillar stitch's braiding to be connected top layer and bottom.
In the present invention, pin on each sley bar can be worn the yarn of various materials, make the woven cloth of braiding there is elasticity or not there is elasticity, be specially: the yarn that described sley bar GB1, Jacquard sley bar JB2 and Jacquard sley bar JB3 wear is polyster fibre, nylon fibre, colored fibre, cationic fiber, polyamide composite filaments or mechanical wrap yarn; The yarn that described Jacquard sley bar JB4, Jacquard sley bar JB5 and sley bar GB6 wear is polyster fibre, nylon fibre, colored fibre, cationic fiber, polyamide composite filaments or mechanical wrap yarn; The yarn that described sley bar GB7 wears is polyster fibre, nylon fibre, colored fibre, cationic fiber, polyamide composite filaments or mechanical wrap yarn; Described mechanical wrap yarn is the core silk spandex that its outer uniform winding has fiber filament.
Monochrome or polychrome double-layer partition jacquard weave warp knitting cloth that the present invention also provides described braid method to weave.
Further, warp knitting cloth of the present invention comprises top layer and bottom, between top layer and bottom, adopts yarn to be connected, or adopts yarn to connect and do not adopt yarn to be connected to be arranged alternately, not adopt yarn junction formation clearance layer.
Further, in described clearance layer, be filled with elastic material, this elastic material is cotton-wool, lint or sponge etc.
The braid method that the present invention adopts is unique, rationally control warp run-in and the tension force of each yarn, the monochrome obtaining or polychrome double-layer partition jacquard weave warp knitting cloth comprise top layer and bottom, between its top layer and bottom, adopt irregular braid method, between top layer and bottom, adopt yarn to be connected or adopt yarn to connect and do not adopt yarn to be connected to be arranged alternately, do not adopt yarn junction to form clearance layer, in gap, can fill the elastic materials such as cotton-wool, lint or sponge, make gap portion projection, thereby make woven cloth integral body there is different level effects.
The specific embodiment
Below in conjunction with the specific embodiment, the present invention is further detailed explanation.
The braid method of a kind of monochrome of the present invention or polychrome double-layer partition jacquard weave warp knitting cloth, described warp knitting cloth weaves on two-needle bar jacquard warp, and described braid method comprises the following steps:
(1) adopt the figured pattern of computer design warp knitting cloth;
(2) braiding is prepared: described warp knitting machine configuration six, yarn guiding chase comb, is arranged and is followed successively by sley bar GB1, Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4, Jacquard sley bar JB5 and sley bar GB6 after slave forward direction machine, wherein:
A) sley bar GB1 and sley bar GB6 adopt the yarn guide needle block of full plane No.; Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 and Jacquard sley bar JB5 adopt the yarn guide needle block of half plane No.;
B) the full threading yarn of the pin of described sley bar GB1 and sley bar GB6; Pin on described Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 and Jacquard sley bar JB5 is all worn 238 yarns, half pin threading yarn not of the pin threading yarn of half, and the pin interval of the pin of threading yarn and not threading yarn arranges; The warp run-in of yarn is 1000-2800mm/ lacquer;
C) described sley bar GB1 adopts pillar stitch; Described Jacquard sley bar JB2 and Jacquard sley bar JB3 adopt the identical yarn that moves needle method and same color, and the needle method that moves adopting is pillar stitch, warp plain stitch or through suede tissue; Described sley bar GB6 adopts pillar stitch; Described Jacquard sley bar JB4 and Jacquard sley bar JB5 adopt the identical yarn that moves needle method and same color, and the needle method that moves adopting is pillar stitch, warp plain stitch or through suede tissue;
D) described sley bar GB1 braiding forms the top layer of warp knitting cloth; Described sley bar GB6 braiding forms the bottom of warp knitting cloth; Described Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 jointly weave and are connected top layer and bottom with Jacquard sley bar JB5; Between top layer and bottom, connect yarn, or connect yarn and be not connected yarn and be arranged alternately, do not connect yarn place formation wall;
(3) input parameter on jacquard warp, knits, and obtains the double-layer partition jacquard weave warp knitting cloth of predetermined pattern.
Described step (3) afterwards, also comprise staining procedure: the woven cloth that step (3) is obtained is put into dye vat, drop into dyestuff and the white anti-fouling agent of corresponding style color, dye vat temperature is increased to 98-102 ℃, is incubated 1 hour, continue to improve dye vat temperature to 118-122 ℃, be incubated 1 hour, again improve dye vat temperature to 128-132 ℃, be incubated 1 hour, complete gauze dyeing.
Further, also disposing the 7th yarn guiding chase comb on warp knitting machine of the present invention, is sley bar GB7, and sley bar GB7 adopts the yarn guide needle block of full plane No., and the pin of sley bar GB7 is worn 476 yarns; Sley bar GB7 adopts inlaid thread tissue or through suede tissue.
Described Jacquard sley bar JB2 and Jacquard sley bar JB3 jacquard weave on the first needle-bar of two-needle bar jacquard warp, these two sley bars do not participate in other sley bar braidings, so warp run-in is consistent; Jacquard sley bar JB4 and Jacquard sley bar JB5 jacquard weave on the second needle-bar of two-needle bar jacquard warp, synchronously also on the first needle-bar, participate in braiding, play local connection and be not connected, forming cloth cover has the interval of connection and is not connected interval, so whole tension force will change, have tie point place tension force large, connectionless point place tension force is little, so the tension force of the yarn that Jacquard sley bar JB4 and Jacquard sley bar JB5 wear carries out tension compensating by double-layer spring compensation arrangement.Meanwhile, also can carry out the well-regulated whole tune tension force of large area by the segmentation warp let-off, and the random adjustment tension force of local small size can only lean on art flower type and spring leaf to compensate.
In the present invention, because of between the top layer of the woven cloth that obtains of braiding and bottom, adopt yarn to be connected, or adopt yarn connection and do not adopt yarn to be connected to be arranged alternately, to make whole warp run-in reach the effect of balance.And existing common loop selection cloth adopts intermediate layer (supporting layer) to connect, between the top layer of woven cloth and bottom, cannot accomplish irregular connection.
Further, sley bar GB1 of the present invention adopts the top layer of pillar stitch's braiding warp knitting cloth; Sley bar GB6 adopts the bottom of pillar stitch's braiding warp knitting cloth; Sley bar GB7 adopts inlaid thread tissue or through suede tissue, described Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 and Jacquard sley bar JB5 all adopt warp plain stitch's braiding to be connected top layer and bottom.
Further, sley bar GB1 of the present invention adopts the top layer of pillar stitch's braiding warp knitting cloth; Sley bar GB6 adopts the bottom of pillar stitch's braiding warp knitting cloth; Sley bar GB7 adopts inlaid thread tissue or through suede tissue, described Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 and Jacquard sley bar JB5 all adopt pillar stitch's braiding to be connected top layer and bottom.
In the present invention, pin on each sley bar can be worn the yarn of various materials, make the woven cloth of braiding there is elasticity or not there is elasticity, be specially: the yarn that described sley bar GB1, Jacquard sley bar JB2 and Jacquard sley bar JB3 wear is polyster fibre, nylon fibre, cationic fiber, polyamide composite filaments or mechanical wrap yarn; The yarn that described Jacquard sley bar JB4 and Jacquard sley bar JB5, sley bar GB6 wear is polyster fibre, nylon fibre, colored fibre, cationic fiber, polyamide composite filaments or mechanical wrap yarn; The yarn that described sley bar GB7 wears is polyster fibre, nylon fibre, colored fibre, cationic fiber, polyamide composite filaments or mechanical wrap yarn; Described mechanical wrap yarn is the core silk spandex that its outer uniform winding has fiber filament.
Monochrome or polychrome double-layer partition jacquard weave warp knitting cloth that the present invention also provides described braid method to weave.
Further, warp knitting cloth of the present invention comprises top layer and bottom, between top layer and bottom, adopts yarn to be connected, or adopts yarn to connect and do not adopt yarn to be connected to be arranged alternately, not adopt yarn junction formation clearance layer.
Further, in described clearance layer, be filled with elastic material, this elastic material is cotton-wool, lint or sponge etc.
Below in conjunction with object lesson, be elaborated.
Embodiment 1
A kind of warp knitting cloth weaves on two-needle bar jacquard warp, and described braid method comprises the following steps:
(1) adopt the figured pattern of computer design warp knitting cloth, as shown in Figure 1;
(2) braiding is prepared: described warp knitting machine configuration six, yarn guiding chase comb, is arranged and is followed successively by sley bar GB1, Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4, Jacquard sley bar JB5 and sley bar GB6 after slave forward direction machine, wherein:
A) sley bar GB1 and sley bar GB6 adopt the yarn guide needle block of full plane No.; Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 and Jacquard sley bar JB5 adopt the yarn guide needle block of half plane No.;
B) the full threading yarn of the pin of described sley bar GB1 and sley bar GB6; Pin on described Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 and Jacquard sley bar JB5 is all worn 238 yarns, half pin threading yarn not of the pin threading yarn of half, and the pin interval of the pin of threading yarn and not threading yarn arranges; The warp run-in of yarn is 2000-2350 mm/ lacquer; The tension force of the yarn on Jacquard sley bar JB4 and Jacquard sley bar JB5 carries out tension compensating by double-layer spring compensation arrangement;
C) described sley bar GB1 adopts pillar stitch, and the yarn that the pin of sley bar GB1 is worn is polyster fibre; Described Jacquard sley bar JB2 adopts the identical yarn that moves needle method and same color with Jacquard sley bar JB3, and the needle method that moves adopting is pillar stitch, and the yarn adopting is polyster fibre; Described Jacquard sley bar JB4 adopts the identical yarn that moves needle method and same color with Jacquard sley bar JB5, and the needle method that moves adopting is warp plain stitch, and the yarn adopting is colored fibre (blue polyster fibre); Described sley bar GB6 adopts pillar stitch, and the yarn that the pin of sley bar GB6 is worn is nylon fibre;
D) top layer of described sley bar GB1 braiding warp knitting cloth; The bottom of described sley bar GB6 braiding warp knitting cloth; Described Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 jointly weave and are connected top layer and bottom with Jacquard sley bar JB5; Between top layer and bottom, connect yarn, so that form and be connected between top layer and bottom;
(3) input parameter on jacquard warp, knits, and obtains the double-layer partition jacquard weave warp knitting cloth of predetermined pattern.
The warp knitting cloth of the present embodiment braiding comprises top layer and bottom, between top layer and bottom, adopts yarn to be connected, realizes two sides difference figured patterns, two sides open-work etc.
Embodiment 2
A kind of warp knitting cloth weaves on two-needle bar jacquard warp, and described braid method comprises the following steps:
(1) adopt the figured pattern of computer design warp knitting cloth, as shown in Figure 2;
(2) braiding is prepared: described warp knitting machine configuration six, yarn guiding chase comb, is arranged and is followed successively by sley bar GB1, Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4, Jacquard sley bar JB5 and sley bar GB6 after slave forward direction machine, wherein:
A) sley bar GB1 and sley bar GB6 adopt the yarn guide needle block of full plane No.; Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 and Jacquard sley bar JB5 adopt the yarn guide needle block of half plane No.;
B) the full threading yarn of the pin of described sley bar GB1 and sley bar GB6; Pin on described Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 and Jacquard sley bar JB5 is all worn 238 yarns, half pin threading yarn not of the pin threading yarn of half, and the pin interval of the pin of threading yarn and not threading yarn arranges; The warp run-in of yarn is 2000-2800 mm/ lacquer;
C) described sley bar GB1 adopts pillar stitch, and the yarn that the pin of sley bar GB1 is worn is polyster fibre; Described Jacquard sley bar JB2 adopts the identical yarn that moves needle method and same color with Jacquard sley bar JB3, and the needle method that moves adopting is warp plain stitch, and the yarn adopting is polyster fibre; Described Jacquard sley bar JB4 adopts the identical yarn that moves needle method and same color with Jacquard sley bar JB5, and the needle method that moves adopting is that the yarn adopting is nylon fibre through suede tissue; Described sley bar GB6 adopts pillar stitch, and the yarn that the pin of sley bar GB6 is worn is nylon fibre;
D) top layer of described sley bar GB1 braiding warp knitting cloth; The bottom of described sley bar GB6 braiding warp knitting cloth; Described Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 jointly weave and are connected top layer and bottom with Jacquard sley bar JB5; Jacquard sley bar JB4 and Jacquard sley bar JB5 carry out local irregularities and are connected and weave, and adopt yarn to connect or do not adopt yarn to connect, and two kinds of structures are arranged alternately, and do not adopt yarn junction to form clearance layer.Owing to adopting yarn to connect between top layer and bottom or not adopting yarn to connect, cause yarn tension degree of tightness to differ larger, the tension force of yarn is by selecting craft woven and double-layer spring compensation arrangement to carry out tension compensating; When large area view picture rule connects, view picture adopts yarn to connect or does not adopt yarn to connect, and can adopt (EBC) segmentation warp let-off to adjust tension force;
(3) input parameter on jacquard warp, knits, and obtains the double-layer partition jacquard weave warp knitting cloth of predetermined pattern.
(4) woven cloth step (3) being obtained is put into dye vat, drop into dyestuff and the white anti-fouling agent of corresponding style color, dye vat temperature is increased to 100 ℃, be incubated 1 hour, continue to improve dye vat temperature to 118 ℃, be incubated 1 hour, again improve dye vat temperature to 132 ℃, be incubated 1 hour, complete gauze dyeing.Under different temperatures, different yarns is eaten look to corresponding dyestuff, and under the effect that prevents pollutant, prevents and other adjacent yarn union dyeing, and the process a dye bath becomes the dyeing that can complete two kinds of colors thus.
The warp knitting cloth of the present embodiment braiding comprises top layer and bottom, between top layer and bottom, adopts yarn to be connected or does not adopt yarn to connect, and two kinds of structures are arranged alternately, and do not adopt yarn junction formation clearance layer.In clearance layer, be filled with elastic material, this elastic material is cotton-wool, lint or sponge etc.
Embodiment 3
A kind of warp knitting cloth weaves on two-needle bar jacquard warp, and described braid method comprises the following steps:
(1) adopt the figured pattern of computer design warp knitting cloth, as shown in Figure 3;
(2) braiding is prepared: described warp knitting machine configuration seven, yarn guiding chase comb, is arranged and is followed successively by sley bar GB1, Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4, Jacquard sley bar JB5, sley bar GB6 and sley bar GB7 after slave forward direction machine, wherein:
A) sley bar GB1, sley bar GB6 and sley bar GB7 adopt the yarn guide needle block of full plane No.; Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 and Jacquard sley bar JB5 adopt the yarn guide needle block of half plane No.;
B) the full threading yarn of the pin of described sley bar GB1, sley bar GB6 and sley bar GB7; Pin on described Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 and Jacquard sley bar JB5 is all worn 238 yarns, half pin threading yarn not of the pin threading yarn of half, and the pin interval of the pin of threading yarn and not threading yarn arranges; The warp run-in of yarn is 2000-2350 mm/ lacquer; C) described sley bar GB1 adopts pillar stitch, and the yarn that the pin of sley bar GB1 is worn is polyster fibre; Described Jacquard sley bar JB2 adopts the identical yarn that moves needle method and same color with Jacquard sley bar JB3, and the needle method that moves adopting is warp plain stitch, and the yarn adopting is polyster fibre; Described Jacquard sley bar JB4 adopts the identical yarn that moves needle method and same color with Jacquard sley bar JB5, and the needle method that moves adopting is warp plain stitch, and the yarn adopting is nylon fibre; Described sley bar GB6 adopts pillar stitch, and the yarn that the pin of sley bar GB6 is worn is nylon fibre; Sley bar GB7 adopts through suede tissue, and the yarn that the pin of sley bar GB7 is worn is cationic fiber;
D) top layer of described sley bar GB1 braiding warp knitting cloth; The bottom of described sley bar GB6 braiding warp knitting cloth; Described Jacquard sley bar JB2, Jacquard sley bar JB3, Jacquard sley bar JB4 jointly weave and are connected top layer and bottom with Jacquard sley bar JB5; Between top layer and bottom, connect yarn, so that form and be connected between top layer and bottom;
(3) input parameter on jacquard warp, knits, and obtains the double-layer partition jacquard weave warp knitting cloth of predetermined pattern.
(4) woven cloth step (3) being obtained is put into dye vat, drop into dyestuff and the white anti-fouling agent of corresponding style color, dye vat temperature is increased to 100 ℃, be incubated 1 hour, continue to improve dye vat temperature to 118 ℃, be incubated 1 hour, again improve dye vat temperature to 130 ℃, be incubated 1 hour, complete gauze dyeing.Under different temperatures, different yarns is eaten look to corresponding dyestuff, and under the effect that prevents pollutant, prevents and other adjacent yarn union dyeing, and the process a dye bath becomes the dyeing that can complete three kinds of colors thus.
The warp knitting cloth of the present embodiment braiding comprises top layer and bottom, between top layer and bottom, adopts yarn to be connected, realizes multicolour effect, two sides difference figured patterns, two sides open-work etc.