CN115287854A - Width expansion control method for reducing width shrinkage of outer layer of impregnated cloth - Google Patents
Width expansion control method for reducing width shrinkage of outer layer of impregnated cloth Download PDFInfo
- Publication number
- CN115287854A CN115287854A CN202210892405.5A CN202210892405A CN115287854A CN 115287854 A CN115287854 A CN 115287854A CN 202210892405 A CN202210892405 A CN 202210892405A CN 115287854 A CN115287854 A CN 115287854A
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- Prior art keywords
- width
- fabric
- dipped
- treatment
- cloth
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- 239000004744 fabric Substances 0.000 title claims abstract description 140
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000005452 bending Methods 0.000 claims abstract description 41
- 238000007598 dipping method Methods 0.000 claims abstract description 20
- 239000000835 fiber Substances 0.000 claims abstract description 20
- 238000001035 drying Methods 0.000 claims abstract description 16
- 230000008602 contraction Effects 0.000 claims abstract description 15
- 229920000742 Cotton Polymers 0.000 claims abstract description 14
- 229920001778 nylon Polymers 0.000 claims abstract description 14
- 238000009941 weaving Methods 0.000 claims abstract description 14
- 238000005096 rolling process Methods 0.000 claims abstract description 9
- 238000003892 spreading Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000003292 glue Substances 0.000 claims description 13
- 244000151282 Eucalyptus cambageana Species 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 244000059939 Eucalyptus gunnii Species 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010057 rubber processing Methods 0.000 description 1
Classifications
-
- 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
- D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
- D06C3/06—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics by rotary disc, roller, or like apparatus
-
- 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
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/208—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based
- D03D15/217—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based natural from plants, e.g. cotton
-
- 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
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
-
- 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
- D10B2201/01—Natural vegetable fibres
- D10B2201/02—Cotton
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Botany (AREA)
- Tires In General (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The invention discloses a width expansion control method for reducing the width contraction of the outer layer of gum dipping cloth. Selecting nylon fibers and cotton yarn fibers as basic raw materials, taking the nylon fibers as warp yarns and the cotton yarn fibers as weft yarns, and weaving by adopting a common weaving process to prepare grey cloth; the obtained grey cloth is subjected to spreading treatment by a roller spreader according to a conventional process; then, carrying out spreading treatment by adopting a three-finger spreader; performing conventional gum dipping treatment on the treated grey cloth to obtain gum dipped cloth; drying the obtained dipped fabric, and performing amplitude expansion treatment on the dipped fabric by adopting a roller expander in the drying process; and (3) carrying out spreading treatment on the obtained dipped fabric by adopting three sets of bending roll spreaders and one set of three-finger spreaders according to a conventional process, and finally rolling to obtain the dipped fabric for the tire after the spreading treatment of the product. The difference between the loading creep rate and the unloading creep rate of the weft of the dipped fabric prepared by the method is greatly reduced, and the selvage shrinkage condition of the dipped fabric is also obviously improved.
Description
1. The technical field is as follows:
the invention relates to the production field of impregnated cord fabrics for tires, in particular to an expansion control method for reducing the width shrinkage of the outer layer of the impregnated cord fabrics.
2. Background art:
the production of the rubber tires of the automobiles has been in the history for nearly one hundred years, the general automobile tires in the world are mainly radial rubber tires, and the quality requirements of the rubber tires are higher and higher. In the tire manufacturing process, a filler is generally used to divide the rubber material placed in a roll, and in the rubber processing process, the filler is used to store unvulcanized rubber material or cord fabric coated with rubber, and the filler is used to increase the strength, wear resistance and antifouling property of the tire.
The dipped fabric plays an important role in the comfort, traction performance and dimensional stability of the tire in use. The width uniformity of the dipped fabric causes the width of the dipped fabric to be inconsistent after calendering, particularly the dipped fabric on the outer layer of the fabric roll generates the phenomenon of width narrowing, and the narrowing degree is more obvious after long-term placement, thereby influencing the quality and consumption of tire products.
Different rolling equipment of different tire manufacturers has different requirements on the width standard of the dipped fabric, and most of the requirements are controlled to be 140 cm-155 cm. The grey cloth is subjected to multiple actions of heat, tension, glue solution and the like in the process of gum dipping heat treatment, and the actions lead the fabric structure of the cord fabric, warp yarns and weft yarns to be changed to a certain extent and show larger transverse shrinkage. The width of the dipped fabric of the machine just below reaches the standard range required by customers, and after long-term placement, 5-10 layers of width narrowing phenomena with different degrees exist at the distance of 8-20 cm from the side parts at two sides.
3. The invention content is as follows:
the technical problem to be solved by the invention is as follows: according to the phenomenon that the width of the existing impregnated cloth for the tire is narrowed to different degrees, the invention provides a width expansion control method for reducing the width contraction of the outer layer of the impregnated cloth in order to achieve the purpose of reducing the width contraction of the outer layer of the impregnated cloth.
In order to solve the problems, the invention adopts the technical scheme that:
the invention provides a width expansion control method for reducing the width contraction of the outer layer of gum dipping cloth, which comprises the following steps:
a. selecting nylon fibers and cotton yarn fibers as basic raw materials, taking the nylon fibers as warp yarns and the cotton yarn fibers as weft yarns, and weaving by adopting a common weaving process to prepare grey cloth;
b. b, according to conventional treatment, carrying out spreading treatment on the grey cloth obtained in the step a by using a roller spreader;
c. c, performing expanding treatment on the grey cloth obtained by the expanding treatment in the step b by using a three-finger expander;
d. gum dipping: c, placing the grey cloth processed in the step c into glue solution for conventional glue dipping treatment to obtain dipped cloth;
e. d, drying the dipped fabric obtained in the step d, and expanding the dipped fabric by using a roller expander in the drying process;
f. and e, carrying out spreading treatment on the dipped fabric obtained in the step e by adopting three sets of bending roll spreaders and one set of three-finger spreaders according to a conventional process, and finally rolling to obtain the product spread dipped fabric for the tire.
According to the width expansion control method for reducing the width contraction of the outer layer of the impregnated cloth, the angle of the three-finger width expander is adjusted to be 60-90 degrees in the step c (the angle is the included angle between the three fingers of the width expander and the warp direction of the impregnated cloth, and the transverse width of the white grey cloth is improved and stabilized by adjusting the angle between the three fingers of the width expander and the white grey cloth).
According to the width expansion control method for reducing the width contraction of the outer layer of the impregnated cloth, the width expansion width of the three-finger width expander in the step c is 155-165 cm.
According to the width expansion control method for reducing the width contraction of the outer layer of the dipped fabric, in the step e, three sets of bending roller expanders are adopted to perform width expansion treatment on the dipped fabric (acting force in the width direction is applied to the dipped fabric, and finally the width of the dipped fabric meets the standard requirement, so that the width is more stable, and the forming of the dipped fabric is facilitated).
According to the width expansion control method for reducing the width contraction of the outer layer of the dipped fabric, the three sets of bending roll width expanders are arranged at the inlet positions of the tension frames in the step e (so that the dipped cord fabric is subjected to the width expansion acting force in the heat treatment process, and the width is more stable).
According to the width expansion control method for reducing the width contraction of the outer layer of the impregnated cloth, the width expansion of the impregnated cloth is 135-145 cm when the impregnated cloth passes through the first set of bending roll expander, the width expansion of the impregnated cloth is 135-145 cm when the second set of bending roll expander is used, and the width expansion of the impregnated cloth is 137-145 cm when the third set of bending roll expander is used.
The invention has the following positive beneficial effects:
1. the invention adds the bending expander and the three-finger expander to ensure that the grey cloth receives the expanding acting force before and during the heat treatment, thereby achieving the purpose of reducing the width shrinkage of the outer layer of the dipped cloth.
2. The invention adopts a new width expanding method, and adds a width expanding device before and during the gum dipping heat treatment, so that the width tends to be in a stable state in the whole heat treatment process, the width is transversely stressed, the weft yarn is drafted and shaped, and the transverse shrinkage of the width is reduced. Thereby solving the problem of narrowing the width of the cord fabric on the outer layer of the impregnated cloth and improving the appearance quality of the end face rolling posture.
3. According to the technical scheme, in the process of gum dipping heat treatment, the width of the gum dipped cloth in each area is stabilized, and the setting is carried out according to the required target value, so that the weft yarn is subjected to acting force in the width direction in the heat treatment process, and the phenomenon of width shrinkage of the outer layer of the gum dipped cloth is reduced.
4. According to the technical scheme, in the heat treatment process, the bending roller expander is added, the expanding is performed step by step according to the width requirement of the lower machine, the expanding pressure of the winding part is reduced, the working state of the expanding device of the winding part is more stable, and the roll posture forming of the impregnated cloth is facilitated.
5. The dipped fabric for the tire obtained by the width expanding treatment of the technical scheme of the invention has the selvage shrinkage phenomenon of only 1-2 layers, and has obvious technical effect compared with the selvage shrinkage phenomenon of 8-10 layers of the dipped fabric for the tire obtained by the existing treatment.
6. The dipped fabric for the tire obtained through the amplitude-expanding treatment of the technical scheme of the invention has the mounting creep rate of 2.3-4.0% and the unloading creep rate of 2.2-3.9%, and compared with the dipped fabric for the tire obtained through the treatment of the prior art (the mounting creep rate of the dipped fabric obtained through the prior treatment is-2.0-3.5% and the unloading creep rate is 0-0.5%), the difference value between the mounting creep rate and the unloading creep rate is greatly reduced.
4. The specific implementation mode is as follows:
the invention is further illustrated by the following examples, which do not limit the scope of the invention.
Comparative example 1:
a production method of dipped fabric for tires comprises the following detailed steps:
a. selecting nylon fibers and cotton yarn fibers as basic raw materials, taking the nylon fibers as warp yarns and the cotton yarn fibers as weft yarns, and weaving by adopting a common weaving process to prepare grey cloth;
b. b, according to conventional treatment, carrying out expanding treatment on the grey cloth obtained in the step a by using a roller expander, wherein the expanding treatment is carried out to 158cm;
c. gum dipping: c, placing the grey cloth processed in the step c into glue solution for conventional glue dipping treatment to obtain dipped cloth;
d. c, placing the dipped fabric obtained in the step c into a drying oven for drying;
e. and d, carrying out spreading treatment on the dipped fabric obtained by drying in the step d by adopting three sets of bending roll spreaders and one set of three-finger spreaders according to a conventional process (the first set of bending roll spreaders is spread to 135cm, the second set of bending roll spreaders is spread to 137cm, the third set of bending roll spreaders is spread to 140cm, the third set of bending roll spreaders is spread to 143 cm), and finally rolling to obtain the product spread dipped fabric for the tire.
The left side of the dipped fabric obtained in the comparative example has 8 layers of fabric edges which shrink by 17.0cm; the shrinkage phenomenon of 7 layers of cloth edges appears on the right side, and the shrinkage is 16.5cm.
Comparative example 2:
a production method of dipped fabric for tires comprises the following detailed steps:
a. selecting nylon fibers and cotton yarn fibers as basic raw materials, taking the nylon fibers as warp yarns and the cotton yarn fibers as weft yarns, and weaving by adopting a common weaving process to prepare grey cloth;
b. b, according to conventional treatment, carrying out expanding treatment on the grey cloth obtained in the step a by using a roller expander, wherein the expanding is carried out to 165cm;
c. gum dipping: c, placing the grey cloth processed in the step c into glue solution for conventional glue dipping treatment to obtain dipped cloth;
d. c, placing the dipped fabric obtained in the step c into a drying oven for drying;
e. and d, carrying out spreading treatment on the dipped fabric obtained by drying in the step d by adopting three sets of bending roll spreaders and one set of three-finger spreaders according to a conventional process (the first set of bending roll spreaders is spread to 137cm, the second set of bending roll spreaders is spread to 140cm, the third set of bending roll spreaders is spread to 145cm, the third set of bending roll spreaders is spread to 150 cm), and finally rolling to obtain the product spread dipped fabric for the tire.
The left side of the dipped fabric obtained in the comparative example has 9 layers of fabric edges which shrink by 20.0cm; the shrinkage of 10 layers of selvage appears on the right side, and the shrinkage is 18.5cm.
Embodiment 1 of the present invention:
the invention relates to an expanding control method for reducing the width shrinkage of the outer layer of gum dipping cloth, which comprises the following detailed steps:
a. selecting nylon fibers and cotton yarn fibers as basic raw materials, taking the nylon fibers as warp yarns and the cotton yarn fibers as weft yarns, and weaving by adopting a common weaving process to prepare grey cloth;
b. b, according to conventional treatment, carrying out expanding treatment on the grey cloth obtained in the step a by using a roller expander, and expanding to 158cm;
c. c, performing expanding treatment on the grey cloth obtained by the expanding treatment in the step b by using a three-finger expander, wherein the expanding is up to 158cm; adjusting the angle of the three-finger expander to 80 degrees;
d. gum dipping: c, placing the grey cloth processed in the step c into glue solution for conventional glue dipping treatment to obtain dipped cloth;
e. d, drying the dipped fabric obtained in the step d, and expanding the dipped fabric by adopting three sets of bent roll expanders in the drying process, wherein the three sets of bent roll expanders are arranged at the inlet positions of the tension frames;
the width is expanded to 137cm when the fiber passes through a first set of bending roll expanders, the width is expanded to 138cm when the fiber passes through a second set of bending roll expanders, and the width is expanded to 138cm when the fiber passes through a third set of bending roll expanders;
f. and e, performing expanding treatment on the impregnated cloth obtained in the step e by adopting three sets of bending roll expanders and one set of three-finger expanders according to a conventional process (the first set of bending roll expanders expand to 137cm, the second set of bending roll expanders expand to 138cm, the third set of bending roll expanders expand to 140cm, the third set of bending roll expanders expand to 143 cm), and finally rolling to obtain the product of the impregnated cloth for the tire after the expanding treatment.
The left side of the dipped fabric obtained in the embodiment of the invention has the shrinkage phenomenon of 2 layers of fabric edges, and the shrinkage is 5.0cm; the shrinkage phenomenon of 1 layer of cloth edge appears on the right side, and the shrinkage is 3.5cm.
Embodiment 2 of the present invention:
the invention relates to an expanding control method for reducing the width shrinkage of the outer layer of gum dipping cloth, which comprises the following detailed steps:
a. selecting nylon fibers and cotton yarn fibers as basic raw materials, taking the nylon fibers as warp yarns and the cotton yarn fibers as weft yarns, and weaving by adopting a common weaving process to prepare grey cloth;
b. b, according to conventional treatment, carrying out expanding treatment on the grey cloth obtained in the step a by using a roller expander, wherein the expanding is carried out to 165cm;
c. c, performing expanding treatment on the grey cloth obtained by the expanding treatment in the step b by using a three-finger expander, wherein the expanding is up to 165cm; adjusting the angle of the three-finger expander to 65 degrees;
d. gum dipping: c, placing the grey cloth treated in the step c into glue solution for conventional glue dipping treatment to obtain dipped cloth;
e. d, drying the dipped fabric obtained in the step d, and expanding the dipped fabric by adopting three sets of bent-roll expanders in the drying process, wherein the three sets of bent-roll expanders are all arranged at the inlet positions of each tension bracket;
the width is increased to 143cm when the fiber passes through a first set of bending roll expanders, the width is increased to 143cm when the fiber passes through a second set of bending roll expanders, and the width is increased to 145cm when the fiber passes through a third set of bending roll expanders;
f. and e, performing expanding treatment on the impregnated cloth obtained in the step e by adopting three sets of bending roll expanders and one set of three-finger expanders according to a conventional process (the first set of bending roll expanders expand to 140cm, the second set of bending roll expanders expand to 143cm, the third set of bending roll expanders expand to 147cm, the third set of bending roll expanders expand to 150 cm), and finally rolling to obtain the product of the impregnated cloth for the tire after the expanding treatment.
The left side of the dipped fabric obtained in the embodiment of the invention has the shrinkage phenomenon of 2 layers of fabric edges, and the shrinkage is 2.5m; the shrinkage phenomenon of 2 layers of cloth edges appears on the right side, and the shrinkage is 3.5cm.
Claims (6)
1. A width expansion control method for reducing the width contraction of the outer layer of the impregnated cloth is characterized by comprising the following steps:
a. selecting nylon fibers and cotton yarn fibers as basic raw materials, taking the nylon fibers as warp yarns and the cotton yarn fibers as weft yarns, and weaving by adopting a common weaving process to prepare grey cloth;
b. b, according to conventional treatment, carrying out spreading treatment on the grey cloth obtained in the step a by using a roller spreader;
c. c, performing expanding treatment on the grey cloth obtained by the expanding treatment in the step b by using a three-finger expander;
d. gum dipping: c, placing the grey cloth treated in the step c into glue solution for conventional glue dipping treatment to obtain dipped cloth;
e. d, drying the dipped fabric obtained in the step d, and expanding the dipped fabric by using a roller expander in the drying process;
f. and e, performing amplitude expanding treatment on the dipped fabric obtained in the step e by adopting three sets of bending roll expanders and one set of three-finger expander according to a conventional process, and finally rolling to obtain the product of the dipped fabric for the tire after the amplitude expanding treatment.
2. The method for controlling the width expansion of the outer layer of the treated fabric to reduce the width contraction of the treated fabric as claimed in claim 1, wherein: and c, adjusting the angle of the three-finger spreader to be 60-90 degrees.
3. The method for controlling the width expansion of the outer layer of the treated fabric to reduce the width contraction of the treated fabric as claimed in claim 1, wherein: in the step c, the width of the third-finger spreader is 155-165 cm.
4. The method for controlling the width expansion of the outer layer of the treated fabric to reduce the width contraction of the treated fabric as claimed in claim 1, wherein: and e, adopting three sets of bending roller expanders to expand the dipped fabric.
5. The method for controlling the width expansion of the outer layer of the treated fabric to reduce the width contraction of the treated fabric as claimed in claim 4, wherein: and e, setting the three sets of bending roll expanders at the inlet positions of the tension frames.
6. The method for controlling the width expansion of the outer layer of the treated fabric to reduce the width contraction of the treated fabric as claimed in claim 4, wherein: the width of the dipped fabric is 135-145 cm when the dipped fabric passes through the first set of bending roll width expander, 135-145 cm when the dipped fabric passes through the second set of bending roll width expander, and 137-145 cm when the dipped fabric passes through the third set of bending roll width expander.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210892405.5A CN115287854B (en) | 2022-07-27 | 2022-07-27 | Expanding control method for reducing width shrinkage of outer layer of impregnated fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210892405.5A CN115287854B (en) | 2022-07-27 | 2022-07-27 | Expanding control method for reducing width shrinkage of outer layer of impregnated fabric |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115287854A true CN115287854A (en) | 2022-11-04 |
| CN115287854B CN115287854B (en) | 2024-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210892405.5A Active CN115287854B (en) | 2022-07-27 | 2022-07-27 | Expanding control method for reducing width shrinkage of outer layer of impregnated fabric |
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| Country | Link |
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| CN (1) | CN115287854B (en) |
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-
2022
- 2022-07-27 CN CN202210892405.5A patent/CN115287854B/en active Active
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| CN115287854B (en) | 2024-08-09 |
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