CN111636129A - Preparation method of cord fabric with multi-group hollow warp marking structure and cord fabric prepared by preparation method - Google Patents
Preparation method of cord fabric with multi-group hollow warp marking structure and cord fabric prepared by preparation method Download PDFInfo
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- CN111636129A CN111636129A CN202010298162.3A CN202010298162A CN111636129A CN 111636129 A CN111636129 A CN 111636129A CN 202010298162 A CN202010298162 A CN 202010298162A CN 111636129 A CN111636129 A CN 111636129A
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
- D03D13/008—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft characterised by weave density or surface weight
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/60—Construction or operation of slay
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
- D06C7/02—Setting
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- 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
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/20—Cellulose-derived artificial fibres
- D10B2201/22—Cellulose-derived artificial fibres made from cellulose solutions
- D10B2201/24—Viscose
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- 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
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
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Abstract
The invention discloses a preparation method of a plurality of groups of hollow warp marked structure cord fabrics and the cord fabrics prepared by the method. According to the reed, the reed dents with different thicknesses are regularly arranged, and the cord fabric in the S twisting direction and the Z twisting direction is regularly arranged, so that the prepared cord fabric shows a hollow warp effect and keeps clear hollow warp marks, the problem of uneven density distribution of the cord fabric is fundamentally solved, the uniformity of the strength of the tire cap ply is ensured, and the safety of tire use is improved.
Description
Technical Field
The invention belongs to the field of textile chemical industry, and particularly relates to a preparation method of a plurality of groups of hollow warp marked structural cord fabrics and the cord fabrics prepared by the same, in particular to a method for preparing a plurality of groups of hollow warp marked structural cord fabrics for tires.
Technical Field
The nylon 66 dipped cord fabric adopts strong plied yarns as warps and medium-thin single yarns as wefts, is an important framework material of a tire, is widely used for a cap ply of a semi-steel radial tire, and has the functions of inhibiting a belt ply from moving in high-speed running of the tire, preventing the belt ply from being separated, keeping the dimensional stability of the tire and playing an important role in the running safety.
At present, various cord fabric structure methods exist, but at present, cord fabrics with cord fabric structures are arranged closely, and the warp density distribution of the dipped cord fabrics only tends to be uniform but cannot be completely the same. Therefore, after calendering and cutting in a tire factory, the cap strip with a certain width has different cord number and uneven density distribution, so that the strength of the tire cap strip is inconsistent, and the tire is lack of safety in the using process.
With the development of the tire industry, the dipped cord fabric used as a tire framework material is continuously changed, the requirement on the calendering and cutting precision of the dipped cord fabric is higher and higher, the width of the tire cap strip is ensured to be consistent, and the number of cord threads in the corresponding width is also ensured to be the same, so that a new cord fabric structure and a corresponding manufacturing process technology are urgently required to be developed to realize the accurate consistency of the width of the tire cap strip and the number of the cord threads.
Disclosure of Invention
The invention aims at the technical problems that: the density distribution of the cord fabric prepared by the reed and the cord fabric preparation method in the prior art is uneven, so that the number of crown band cords of the cord fabric is inconsistent after the cord fabric is calendered and cut in the process of manufacturing a tire, the strength of the prepared tire crown band is inconsistent, the tire is lack of safety in the use process, and especially, greater potential safety hazard exists when the bearing is large.
In order to solve the problems, the invention provides a preparation method of a plurality of groups of hollow warp marked structure cord fabrics. The multiple groups of hollow warp marked structure cord fabrics are fixedly grouped by adopting the number of cord threads, the width of each group is consistent, and a certain width is left between each group as a mark; s, Z the twisted cord is regularly arranged in the weft direction to ensure the clear retention of the empty warp mark; the rubber-dipped cord fabric with the structure is combined with rubber on a calender to produce the rubber cord fabric, the rubber cord fabric is clearly shown at the hollow mark position, and the cutting is carried out along the mark position, so that the width of the cut crown band tape and the number distribution of cord threads in the corresponding width are completely the same. Effectively preventing the problem of uneven density distribution of the cord and obviously improving the strength of the tire cap ply.
The invention is realized by the following technical scheme
A method for preparing a plurality of groups of hollow warp marked structural cord fabrics comprises the following steps:
(1) twisting:
nylon 66 fiber is taken in a twisting machine, and is processed by the twisting machine to obtain cord threads in S twisting direction and Z twisting direction; (in the preparation process, the rotating speed of the twisting machine is 6000-11000 rpm, and the twist of the cord thread is 240-500 tpm).
In the process, two nylon 66 filaments are taken to prepare 1S-twisted cord through a twisting machine, and the cord is placed for later use after a plurality of S-twisted cords are prepared; taking two nylon 66 filaments to prepare 1Z-direction cord in a twisting machine, preparing a plurality of Z-direction cords, and placing for later use;
(2) weaving:
placing the S-twist cord and the Z-twist cord prepared in the step (1) on a large creel, and then preparing a plurality of groups of cord fabrics with hollow warp marking structures by an air jet loom provided with a reed; (in the process, the rotating speed of the air jet loom is 600-900 rpm);
(3) gum dipping:
performing gum dipping treatment on the cord fabric obtained in the step (2), wherein the specific treatment process is as follows: unwinding → sewing → gumming → drying → drafting → shaping → cooling → coiling → packaging;
in the process, the gum dipping speed is 60-110 m/min, the temperature of the drying zone is 130-150 ℃, the tension is 1350-1950 kg, the temperature of the drawing zone is 220-240 ℃, the tension is 2200-3800 kg, the temperature of the shaping zone is 220-240 ℃, and the tension of the shaping zone is 1350-2800 kg.
The preparation method of the cord fabric with the multi-group hollow warp marking structure comprises the following weaving process in the step (2): firstly, respectively placing the Z-twist cord and the S-twist cord prepared in the step (1) on a large creel, and then sequentially passing through a yarn guide plate → a yarn collecting plate → a lease rod → a balance roller → a yarn guide roller → a feeding device → a pressing roller → a warp stop mechanism → a heald frame → a reed → a take-up roller to prepare a plurality of groups of blank cord fabrics with hollow warp marking structures.
In the preparation method of the cord fabric with the multi-group hollow warp marked structure, the S-twisted cord and the Z-twisted cord in the step (2) are arranged in the manner that the cords in the cord fabric are formed by an air jet loom: from left to right, the first leftmost unit is that 10S-direction cords are adjacently arranged, each unit of the second leftmost unit to the second rightmost unit is that 5Z-direction cords and 5S-direction cords are adjacently arranged, and the first rightmost unit is that 10Z-direction cords are adjacently arranged; (namely, the first unit from left to right is that 10S-direction cords are adjacently arranged, the last unit is that 10Z-direction cords are adjacently arranged, and the middle units are that 5 left and right Z-direction cords and 5S-direction cords are adjacently arranged).
That is, the arrangement of the cords in the gray fabric obtained after the cords are arranged in the above-described arrangement and sequentially passed through the godet plate → the filament collecting plate → the lease rod → the balance roller → the guide roller → the feeding device → the pressure roller → the warp stop mechanism → the heald frame → the reed → the take-up roller is as follows: from left to right, the leftmost side is 10S-direction cord threads which are adjacently arranged, the middle is 5S-direction cord threads which are adjacently arranged from left to right and 5Z-direction cord threads which are adjacently arranged are arranged together to form a unit, and the middle is totally 140-145 units which are adjacently arranged; the rightmost side is 10Z twisted cords which are adjacently arranged.
In the preparation method of the cord fabric with the multi-group hollow warp marking structure, the cord threads in the cord fabric formed after the S-twisted cord threads and the Z-twisted cord threads pass through the air jet loom in the step (2) are arranged in the following mode: from left to right, the first leftmost unit is that 11S-direction cords are adjacently arranged, each unit of the second leftmost unit to the second rightmost unit is that 5Z-direction cords and 6S-direction cords are adjacently arranged, each unit is adjacently arranged, and the first rightmost unit is that 11Z-direction cords are adjacently arranged;
that is, the arrangement of the cords in the gray fabric obtained after the cords according to the arrangement are sequentially passed through the godet plate → the filament collecting plate → the lease rod → the balance roller → the guide roller → the feeding device → the pressure roller → the warp stop mechanism → the heald frame → the reed → the take-up roller is as follows: 11 adjacent cords arranged at the leftmost side in the S twisting direction are arranged, wherein 11 cords in the middle of which the number of cords is 5 and 6 are arranged in the middle of which the number of cords is 11 are formed into a unit, and 135-140 cords are arranged in the middle of which the number of cords is 135-140; 11 cords arranged adjacently in the Z-twist direction at the rightmost position are all one unit.
The preparation method of the cord fabric with the multi-group hollow warp marking structure comprises the following steps that the titer of the nylon 66 fibers in the step (1) is 800-1500 dtex; the width of the grey cloth in the step (2) is 154-162 cm, and the weft density of the grey cloth is 5-10 pieces/10 cm; the length of the grey cloth head is 30-60 cm, and the weft density of the cloth head is 40-70 pieces/10 cm; the weft yarn is viscose yarn.
The invention also provides a reed for preparing the multi-group hollow warp marking structure cord fabric, which comprises an upper beam and a lower beam which are parallel to each other, and also comprises reed dent and reed holes between every two adjacent reed dents; the reed dent is vertically arranged between the upper beam and the lower beam, and two ends of the reed dent are respectively and fixedly connected with the upper beam and the lower beam; the reed dent comprises a thin reed dent with the diameter of A mm and a thick reed dent with the diameter of B mm, and a plurality of thin reed dents which are adjacently arranged and have the diameter of A mm and the thick reed dents with the diameter of B mm are arranged between the upper beam and the lower beam in a crossing way;
one side surface of the reed dent is provided with a weft groove; the diameter A mm is 0.2-0.5 mm; the diameter B mm is 2.0-5.0 mm.
The steel reed for cord fabric preparation, the cross arrangement mode of a plurality of thin dents arranged adjacently and having the diameter of A mm and thick dents having the diameter of Bmm is as follows: every 9-10 thin dents which are arranged adjacently and have the diameter of A mm are arranged in a crossed manner with 1 thick dent with the diameter of Bmm; the total width occupied by the 9-10 thin dents with the diameter of A mm and 1 thick dent with the diameter of B mm is 8.0-18.0 mm; the diameter of the reed hole is 0.45-1 mm.
The steel reed for preparing the cord fabric further comprises edge protecting teeth, the edge protecting teeth are arranged at the end parts of the two ends of the upper beam and the lower beam, and the edge protecting teeth and the reed teeth are arranged between the upper beam and the lower beam in parallel; the diameter of the edge protection teeth is 1.5-3.0 mm.
The steel reed for cord fabric preparation is characterized in that the upper end and the lower end of the reed dent are fixedly connected with the upper beam and the lower beam through adhesive in a bonding manner (the adhesive can be epoxy resin adhesive well known by technical personnel in the field), welding and connecting fixedly or in a threaded manner.
The invention also provides a plurality of groups of hollow warp marked structure cord fabrics prepared by the preparation method or the reed for preparing the cord fabrics. The structural cord fabric can be designed strictly according to the width of the cap strip and the number of the cords in a tire factory, the uniformity of the width of the cap strip and the complete uniformity of the number of the cords in the corresponding width are realized after calendering and cutting, the problem of uneven density distribution of the cords is fundamentally solved, and the uniformity of the strength of the tire cap strip layer is ensured; the uniformity of the strength of the tire cap ply is improved under the condition of not increasing any production time and production cost, and the safety of the tire in use is improved. Greatly reducing the potential safety hazard in the using process caused by the manufacture of the cord fabric.
Compared with the prior art, the invention has the following positive beneficial effects
The multi-group hollow warp marking structure cord fabric adopts a form of fixed grouping of the number of cord threads, the width of each group is consistent, a certain width is reserved between each group to serve as a mark, the structure cord fabric can be designed strictly according to the width of a cap ply of a tire factory and the number of the cord threads, the width of the cap ply is consistent after calendering and cutting, and the number of the cord threads in the corresponding width is completely the same, so that the problem of uneven density distribution of the cord threads is fundamentally solved, the strength uniformity of the cap ply of the tire is ensured, meanwhile, when the cord fabric is cut after calendering of the tire factory, the cord fabric can be directly cut along the marking line, the width is not required to be measured, and the working efficiency is greatly improved; therefore, the invention increases the uniformity of the strength of the tire cap ply and improves the safety of the tire in use under the condition of not increasing any production time and production cost.
In the process of preparing the cord fabric, the cords in the S twisting direction and the Z twisting direction are regularly distributed (figure 3), so that the blank warp marks in the process can be kept clear.
In the reed, the reed dents with different thicknesses are regularly distributed, so that the finally produced cord fabric shows the effect of hollow warp, the obtained hollow warp marked cord fabric is strictly designed according to the width of a tire plant cap ply and the number of cord threads, the uniformity of the width of the cap ply is realized after calendering and cutting, and the number of the cord threads in the corresponding width is completely the same, so that the problem of nonuniform density distribution of the cord threads is fundamentally solved, the uniformity and the consistency of the strength of the tire cap ply are ensured, meanwhile, when the cord fabric is cut after calendering and cutting in the tire plant, the cutting can be directly carried out along the marking line, the width does not need to be measured, and the working efficiency is greatly improved; therefore, the invention increases the uniformity of the strength of the tire cap ply and improves the safety of the tire in use under the condition of not increasing any production time and production cost. Especially for the tire with larger bearing capacity, the potential safety hazard in the using process caused by the manufacture of the cord fabric is greatly reduced. The schematic diagram of the arrangement structure of the cords in the cord fabric prepared by the reed is shown in FIG. 4, and the schematic diagram of the distribution of S, Z twist cords in the prepared cord fabric is shown in FIG. 5;
the reed also avoids the problems of line fuzzing, broken ends and the like caused by the friction between the reed and weaving lines (the distance between reed dent is larger than the diameter of the lines), prolongs the service life of the reed, achieves double effects and has good application prospect.
Drawings
Figure 1 shows a schematic view of the reed structure according to example 1,
figure 2 shows a schematic view of the reed structure according to example 2,
the symbols in the drawings indicate that: 1 denotes an upper beam, 2 denotes a lower beam, 3 denotes an edge protection dent, 4 denotes a dent body, 401 denotes a thin dent, 402 denotes a thick dent, 403 denotes a weft groove, 5 denotes a set of dents in fig. 1, 6 denotes a reed hole, 7 denotes a plurality of sets of dent portions omitted in the middle in fig. 1, 8 denotes a set of dents in fig. 2, and 9 denotes a plurality of sets of dent portions omitted in the middle in fig. 2;
figure 3 shows a side view of a reed,
FIG. 4 is a schematic view of a cord having S-twist and Z-twist produced by the method of the present invention,
FIG. 5 is a schematic view showing the arrangement structure of cords in the cord fabric prepared in example 3,
FIG. 6 shows a schematic view of S, Z twist cord distribution in the cord fabric produced in example 3,
FIG. 7 shows a schematic view of a cord fabric produced by the method of the present invention.
Detailed Description
The present invention will be described in more detail with reference to the following embodiments to facilitate understanding of the technical solutions of the present invention, but the present invention is not limited to the scope of the present invention.
Example 1
A reed for preparing a plurality of groups of hollow warp marked structure cord fabrics comprises an upper beam 1 and a lower beam 2 which are parallel to each other, and also comprises reed dent 4 and reed holes 6 between every two adjacent reed dents, as shown in figures 1 and 3; the reed dent is vertically arranged between the upper beam and the lower beam, and two ends of the reed dent are respectively and fixedly connected with the upper beam and the lower beam and are bonded together by gluing; a weft groove 403 is arranged on one side surface of the reed dent body (grooves are arranged on the side surfaces of all the reed dents, and all the grooves are at the same height of the reed dents);
the reed dent comprises a thin reed dent 401 with the diameter of A mm and a thick reed dent 402 with the diameter of B mm; nine thin dents 401 arranged adjacently and one thick dent 402 are arranged adjacently to form a group of dents 5, and 144 groups of dents are arranged between the upper beam and the lower beam (7 in the figure represents a plurality of groups of dents parts with the middle omitted);
wherein the diameter of the thin reed dent 401 with the diameter of A mm is 0.4mm, and the diameter of the thick reed dent 402 with the diameter of B mm is 2.0 mm; the reed holes in each group have a diameter of 0.55 mm. (0.55 mm from group to group).
Further, the end parts of the two ends of the upper beam and the lower beam are respectively provided with an edge part tooth protector 3, the diameter of the edge part tooth protector 3 is 1.6mm, the edge part tooth protector 3 is parallel to the thin reed teeth 401 and the thick reed teeth 402, and the two ends of the edge part tooth protector are respectively connected with the upper beam and the lower beam (are bonded together through an adhesive for fixation).
The diameter of the thin reed, the diameter of the thick reed and reed holes in each group can be changed according to actual needs.
The schematic diagram of the cord arrangement structure of the cord fabric prepared by the reed of this embodiment is shown in FIG. 5; wherein, 10 warps correspond to the clearance formed by 9 thin dents in the reed, and the empty warps correspond to the clearance of one thick dent in the reed.
Example 2
A reed for preparing a plurality of groups of hollow warp marked structure cord fabrics comprises an upper beam 1 and a lower beam 2 which are parallel to each other, and also comprises reed dent 4 and reed holes 6 between every two adjacent reed dents, as shown in figures 2 and 3; the reed dent is vertically arranged between the upper beam and the lower beam, and two ends of the reed dent are respectively and fixedly connected with the upper beam and the lower beam and are bonded together by welding; a weft groove 403 is arranged on one side surface of the reed dent body (grooves are arranged on the side surfaces of all the reed dents, and all the grooves are at the same height of the reed dents);
the reed dent comprises a thin reed dent 401 with the diameter of A mm and a thick reed dent 402 with the diameter of B mm; ten of the thin dents 401 arranged adjacently and one of the thick dents 402 are arranged adjacently to form a set of dents 8, and 140 sets of dents are arranged between the upper beam and the lower beam (9 in the figure represents a plurality of sets of dents with the middle omitted);
wherein the diameter of the thin reed dent 401 with the diameter of A mm is 0.28mm, and the diameter of the thick reed dent 402 with the diameter of B mm is 2.2 mm; the diameter of the reed hole in each group is 0.60 mm. (0.60 mm between groups).
Further, the end parts of the two ends of the upper beam and the lower beam are respectively provided with an edge part tooth protector 3, the diameter of the edge part tooth protector 3 is 2.5mm, the edge part tooth protector 3 is parallel to the thin reed teeth 401 and the thick reed teeth 402, and the two ends of the edge part tooth protector are respectively connected with the upper beam and the lower beam (are bonded together through an adhesive for fixation).
The diameter of the thin reed, the diameter of the thick reed and reed holes in each group can be changed according to actual needs.
Example 3
A preparation method of a cord fabric with a multi-group hollow warp marking structure comprises the following steps:
(1) twisting:
1440 nylon 66 with the fineness of 940dtex is taken and placed in a twisting machine, a rotating spindle is controlled to rotate rightwards, 720S-twisted cord threads are prepared (one S-twisted cord thread is prepared from every 2 nylon 66 filaments), and the cord threads are placed for standby; then 1440 nylon 66 with the titer of 940dtex is taken and placed in a twisting machine, a rotating spindle is controlled to rotate leftwards, 720Z-direction cord threads are prepared (one Z-direction cord thread is prepared from every 2 nylon 66 filaments), and the cord threads are placed for standby;
(2) weaving:
with viscose yarn as weft, sequentially placing the S-twisted cord prepared in the step (1) and the Z-twisted cord on a large creel, and then sequentially passing through a godet → a collection plate → a lease rod → a balance roller → a guide roller → a feeding device → a pressing roller → a warp stop mechanism → a heald frame → a reed shown in example 1 → prepared white gray fabric is placed by being wound by a winding roller for standby; the rotating speed of the air jet loom in the process is 600 rpm;
wherein the placing sequence on the large creel is that the arrangement sequence of the cord threads in the prepared grey cloth from left to right is as follows: the leftmost cord is 10S twisted cords (i.e., the leftmost cord is made from a set of S twisted cords), and the rightmost cord is 10Z twisted cords (i.e., the rightmost cord is made from a set of Z twisted cords); there are 142 groups in the middle, wherein the arrangement order of each group is: the method comprises the following steps that (1) 5 cords which are adjacently arranged in the Z twisting direction from left to right and 5 cords which are adjacently arranged in the S twisting direction are arranged (namely 10 cords form a group, and 142 groups are adjacently arranged in total);
the width of the obtained white grey cloth is 154cm, and the weft density of the white grey cloth is 5 pieces/10 cm; the length of the cloth head of the grey cloth is 30cm, and the weft density of the cloth head is 40 pieces/cm;
(3) gum dipping:
performing gum dipping treatment on the grey cloth prepared from the cord thread in the step (2), wherein the process comprises the following steps: unwinding → sewing → gumming → drying → drafting → shaping → cooling → coiling → packaging; obtaining the gum dipping cord fabric; the structure of the resulting dipped cord fabric is shown in table 1:
the gum dipping speed in the process is 70m/min, the temperature of the drying area during drying is 130 ℃, and the tension is 1350 kg; the temperature of the drafting zone is 220 ℃ and the tension is 2200 kg; the temperature of the shaping zone is 220 ℃, the tension is 1350kg, and then the temperature is naturally cooled to the room temperature. (the adopted dipping solution is an RFL system). The cord arrangement structure of the cord fabric produced in this example is shown in fig. 5, and the cord distribution of S, Z in the twisted direction of the cord fabric produced in the cord fabric is shown in fig. 6.
Table 1 structure of cord fabric obtained in example 1
Example 4
A preparation method of a cord fabric with a multi-group hollow warp marking structure comprises the following steps:
(1) twisting:
placing 1540 nylon 66 with the titer of 1400dtex in a twisting machine, controlling a rotating spindle to rotate rightwards, preparing 770 cords in an S twisting direction, and placing for later use; then 1540 nylon 66 with the titer of 1400dtex is taken and placed in a twisting machine, the rotating spindle is controlled to rotate leftwards, 770 cords in the Z twisting direction are prepared and placed for standby;
(2) weaving:
with viscose yarn as weft, sequentially placing the S-twist cord and the Z-twist cord prepared in the step (1) on a large creel, sequentially passing through a yarn guide plate → a yarn collecting plate → a lease rod → a balance roller → a yarn guide roller → a feeding device → a pressing roller → a warp stop mechanism → a heald frame → an example 2 reed → preparing white grey cloth, and then rolling and placing the white grey cloth through a rolling roller for standby; the rotating speed of the air jet loom in the process is 900 rpm;
wherein the placing sequence on the large creel is that the arrangement sequence of the cord threads in the prepared grey cloth from left to right is as follows: 11S-twisted cords are arranged on the leftmost side (namely, the leftmost side is a group of cords formed by 11S-twisted adjacently arranged cords), and 11Z-twisted cords are arranged on the rightmost side (namely, the rightmost side is a group of cords formed by 11Z-twisted adjacently arranged cords); 138 groups are arranged in the middle, wherein the arrangement sequence of each group is as follows: from left to right, 5 cords arranged adjacently in the Z twisting direction and 6 cords arranged adjacently in the S twisting direction (namely, the 5 cords arranged adjacently in the Z twisting direction and the 6 cords arranged adjacently in the S twisting direction form a group, 11 cords are arranged adjacently in the middle, and 138 groups are arranged);
the width of the obtained white grey cloth is 162cm, and the weft density of the white grey cloth is 10 pieces/10 cm; the length of the cloth head of the grey cloth is 60cm, and the weft density of the cloth head is 70 pieces/cm;
(3) gum dipping:
performing gum dipping treatment on the grey cloth prepared from the cord thread in the step (2), wherein the process comprises the following steps: unwinding → sewing → gumming → drying → drafting → shaping → cooling → coiling → packaging; obtaining the gum dipping cord fabric; the structure of the resulting dipped cord fabric is shown in table 2:
the gum dipping speed in the process is 110m/min, the temperature of the drying area during drying is 150 ℃, and the tension is 1950 kg; the temperature of the drafting zone is 240 ℃ and the tension is 3800 kg; the temperature of the shaping zone is 240 ℃ and the tension is 2800kg when shaping is carried out, and then the temperature is naturally cooled to the room temperature. (the adopted dipping solution is an RFL system).
Table 2 structure of cord fabric obtained in example 2
Claims (10)
1. A preparation method of a plurality of groups of hollow warp marked structural cord fabrics is characterized by comprising the following steps:
(1) twisting:
nylon 66 fiber is taken in a twisting machine, and is processed by the twisting machine to obtain cord threads with S twisting direction or Z twisting direction; in the twisting process, the rotating speed of a twisting machine is 6000-11000 rpm, and the twist degree of the cord thread is 240-500 tpm;
(2) weaving:
placing the S-twist cord and the Z-twist cord obtained in the step (1) on a large creel, and then processing the S-twist cord and the Z-twist cord by using an air jet loom provided with a reed to prepare a plurality of groups of cord fabrics with hollow warp marking structures;
(3) gum dipping:
performing gum dipping treatment on the cord fabric obtained in the step (2), wherein the specific treatment process is as follows: unwinding → sewing → gumming → drying → drafting → shaping → cooling → coiling → packaging;
in the process, the gum dipping speed is 60-110 m/min, the temperature of the drying zone during drying is 130-150 ℃, the tension is 1350-1950 kg, the temperature of the drawing zone is 220-240 ℃, the tension is 2200-3800 kg, the temperature of the shaping zone is 220-240 ℃, and the tension is 1350-2800 kg.
2. The method for preparing a plurality of groups of hollow warp marked structural cord fabrics according to claim 1, wherein the weaving process in the step (2) specifically comprises the following steps: and (2) placing the Z-twist cord and the S-twist cord prepared in the step (1) on a large creel, and then sequentially passing through a yarn guide plate → a yarn collecting plate → a lease rod → a balance roller → a yarn guide roller → a feeding device → a pressing roller → a warp stop mechanism → a heald frame → a reed → a take-up roller to prepare a plurality of groups of blank cord fabrics with the hollow warp marking structure.
3. The method for preparing a plurality of sets of blank warp marked structural cords according to claim 1 or 2, wherein the cords in the cords formed after the S twisted cords and the Z twisted cords pass through the air jet loom in the step (2) are arranged in the following way: from left to right, the first leftmost unit is that 10S-direction cords are adjacently arranged, each unit of the second leftmost unit to the second rightmost unit is that 5Z-direction cords and 5S-direction cords are adjacently arranged from left to right, and the first rightmost unit is that 10Z-direction cords are adjacently arranged.
4. The method for preparing a plurality of groups of hollow warp marked structural cords according to claim 1 or 2, wherein the cords in the cords formed by the S twisted cords and the Z twisted cords in step (2) after passing through the air jet loom are arranged in the following way: from left to right, the first leftmost unit is that 11S-direction cords are arranged adjacently, each unit of the second leftmost unit to the second rightmost unit is that 5Z-direction cords and 6S-direction cords are arranged adjacently, and the first rightmost unit is that 11Z-direction cords are arranged adjacently.
5. The method for preparing the dipped cord fabric by using the reed for preparing the dipped cord fabric according to claim 1, wherein the fineness of (1) the nylon 66 fiber is 700 to 2100 dtex; the cloth width of the grey cloth in the step (2) is 154-162 cm, and the weft density of the grey cloth is 5-10 pieces/10 cm; the length of the grey cloth head is 30-60 cm, and the weft density of the grey cloth head is 40-70 pieces/cm; the weft yarn is viscose yarn.
6. A reed for preparing a plurality of groups of hollow warp marked structural cord fabrics is characterized by comprising an upper beam, a lower beam, reed dent and reed holes between every two adjacent reed dents, wherein the upper beam and the lower beam are parallel to each other; the reed dent is vertically arranged between the upper beam and the lower beam, and two ends of the reed dent are respectively and fixedly connected with the upper beam and the lower beam; the reed dent comprises a thin reed dent with the diameter of A mm and a thick reed dent with the diameter of B mm, and a plurality of thin reed dents which are adjacently arranged and have the diameter of A mm and the thick reed dents with the diameter of B mm are arranged between the upper beam and the lower beam in a crossing way;
one side surface of the reed dent is provided with a weft groove; the diameter A mm is 0.2-0.5 mm; the diameter B mm is 2.0-5.0 mm.
7. The reed for cord fabric production according to claim 6, wherein the thin dents arranged adjacently and having a diameter of A mm are arranged alternately with the thick dents having a diameter of B mm in such a manner that: every 9-10 thin dents which are adjacently arranged and have the diameter of A mm are arranged in a crossed manner with 1 thick dent with the diameter of B mm; the total width occupied by the 9-10 thin dents with the diameter of A mm and 1 thick dent with the diameter of B mm is 8.0-18.0 mm;
the diameter of the reed hole is 0.45-1 mm.
8. The reed as claimed in claim 6, further comprising edge protection teeth provided at both ends of the upper and lower beams, the edge protection teeth being provided between the upper and lower beams in parallel with the reed teeth; the diameter of the edge protection teeth is 1.5-3.0 mm.
9. The reed for cord fabric production according to claim 6, wherein the upper and lower ends of the dents are fixedly bonded to the upper and lower beams by an adhesive, fixedly bonded by welding, or fixedly connected by a thread.
10. A plurality of groups of hollow warp marked structure cord fabrics prepared by the preparation method of claim 1 or the reed for preparing cord fabrics of claim 6.
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| CN202010298162.3A CN111636129A (en) | 2020-04-16 | 2020-04-16 | Preparation method of cord fabric with multi-group hollow warp marking structure and cord fabric prepared by preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113584690A (en) * | 2021-07-06 | 2021-11-02 | 神马实业股份有限公司 | Drafting method for rapidly identifying slitting position of cord fabric |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113584690A (en) * | 2021-07-06 | 2021-11-02 | 神马实业股份有限公司 | Drafting method for rapidly identifying slitting position of cord fabric |
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