CN115976783A - Processing technology for improving ultraviolet resistance of fabric - Google Patents
Processing technology for improving ultraviolet resistance of fabric Download PDFInfo
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- CN115976783A CN115976783A CN202211583157.2A CN202211583157A CN115976783A CN 115976783 A CN115976783 A CN 115976783A CN 202211583157 A CN202211583157 A CN 202211583157A CN 115976783 A CN115976783 A CN 115976783A
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- 239000004744 fabric Substances 0.000 title claims abstract description 100
- 230000006750 UV protection Effects 0.000 title claims abstract description 32
- 238000012545 processing Methods 0.000 title claims abstract description 29
- 238000005516 engineering process Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 229920000742 Cotton Polymers 0.000 claims abstract description 32
- 230000008569 process Effects 0.000 claims abstract description 32
- 238000009990 desizing Methods 0.000 claims abstract description 21
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000004043 dyeing Methods 0.000 claims abstract description 17
- 230000009467 reduction Effects 0.000 claims abstract description 16
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 14
- 238000004061 bleaching Methods 0.000 claims abstract description 13
- 238000009999 singeing Methods 0.000 claims abstract description 13
- 239000004902 Softening Agent Substances 0.000 claims abstract description 10
- 229920000728 polyester Polymers 0.000 claims abstract description 10
- 238000005406 washing Methods 0.000 claims abstract description 9
- 230000002087 whitening effect Effects 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims description 25
- 238000010025 steaming Methods 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims description 2
- 239000004753 textile Substances 0.000 abstract description 5
- 238000007639 printing Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 51
- 239000003795 chemical substances by application Substances 0.000 description 33
- 239000002738 chelating agent Substances 0.000 description 18
- 238000007670 refining Methods 0.000 description 18
- 235000011121 sodium hydroxide Nutrition 0.000 description 17
- 230000000149 penetrating effect Effects 0.000 description 13
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 12
- 238000010998 test method Methods 0.000 description 10
- 210000003491 skin Anatomy 0.000 description 7
- 102000004190 Enzymes Human genes 0.000 description 6
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- 238000002485 combustion reaction Methods 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 239000000984 vat dye Substances 0.000 description 5
- 230000008520 organization Effects 0.000 description 3
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- 102000008186 Collagen Human genes 0.000 description 2
- 108010035532 Collagen Proteins 0.000 description 2
- XUMBMVFBXHLACL-UHFFFAOYSA-N Melanin Chemical compound O=C1C(=O)C(C2=CNC3=C(C(C(=O)C4=C32)=O)C)=C2C4=CNC2=C1C XUMBMVFBXHLACL-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
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- 238000005096 rolling process Methods 0.000 description 2
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
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- 102000016942 Elastin Human genes 0.000 description 1
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Coloring (AREA)
Abstract
The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a processing technology for improving the ultraviolet resistance of fabric. According to the processing technology, the ultraviolet-resistant fabric with the UPF value of 50+ is obtained by subjecting grey cloth of pure cotton, cotton wool or polyester cotton fabric to the following processing procedures: white fabric: singeing → desizing → bleaching → liquid ammonia → whitening washing → tentering → preshrinking; dyeing the fabric: singeing → desizing → bleaching → reduction dyeing → reduction fixation → liquid ammonia → tentering → preshrinking; the feed liquid used in the tentering process comprises the following components: 20-60 g/L of ultraviolet-proof auxiliary agent ISYS-SUN, 20-40 g/L of hydrophilic softening agent MAS and the balance of water. The invention improves the ultraviolet resistance coefficient of pure cotton, cotton elastic and polyester cotton fabrics to more than 50, and simultaneously keeps the characteristics of soft hand feeling, moderate elasticity and better elastic recovery of the fabrics, and the fabrics are comfortable to wear.
Description
Technical Field
The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a processing technology for improving ultraviolet resistance of fabric.
Background
The prevention of the damage of ultraviolet rays to human bodies is paid more and more attention by consumers, and the ultraviolet rays in the solar spectrum not only enable textiles to fade and become brittle, but also enable the skin of the human bodies to be sunburned and aged to generate melanin and color spots, can further induce canceration more seriously and harm the health of the human bodies.
The protection mechanism of the textile against ultraviolet rays is divided into reflection and absorption. Ultraviolet radiation strikes the fabric, is partially absorbed by the fibers, is partially reflected, and is partially transmitted through the interstices between the fibers of the fabric, possibly directly through the fibers themselves, with only the ultraviolet radiation transmitted through the fabric being radiated to the body, and mostly directly to the body, the remainder being reached by scattered radiation. Therefore, the anti-uv fabric is mainly made by subjecting the fiber or fabric to an anti-uv treatment with a shielding agent to enhance the ability of the fabric to absorb or reflect uv light.
Two kinds of penetrating ultraviolet rays, namely UVA and UVB, exist in sunlight, the UVA can directly penetrate into the dermis of the skin to damage collagen and elastin, the UVA becomes wrinkles and causes skin relaxation, the UVA can directly reach the dermis of the skin to damage the elastic fibers and the collagen, the skin is aged and blackened to generate wrinkles, and the UVB can reach the epidermis of the skin to make the skin suntan, red, swollen and peeled.
UPF is the abbreviation of the English Ultraviolet Protection Factor, namely the Ultraviolet Protection Factor. One can understand the physical significance of the UPF, such as a UPF value of 50, and that 1/50 of the UV light can pass through the fabric. The higher the UPF number, the better the UV protection. The highest UPF value of textiles in the national standard is denoted 50+, i.e. UPF >50. Because the influence on the human body is completely negligible after the UPF is more than 50.
The existing uvioresistant fabrics on the market are not particularly many, the currently most main uvioresistant fabrics are mainly terylene uvioresistant fabrics and nylon uvioresistant fabrics, and the uvioresistant fabrics of pure cotton, cotton wool and polyester cotton are fewer, and the main reason is that the uvioresistant effect of the fabrics of the 3 types of yarns is poor, and the UPF value of the fabrics is not 50+.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the processing technology for improving the ultraviolet resistance of the fabric is provided, the ultraviolet resistance coefficient of pure cotton, cotton elastic and polyester cotton fabric is improved to more than 50, the characteristics of soft hand feeling, moderate elasticity and good elastic recovery of 3 types of fabric are kept, the fabric is comfortable to wear, the fabric is not mercerized, the discharge of waste water and waste gas is reduced, and the green and environment-friendly effect of the fabric is realized.
According to the processing technology for improving the ultraviolet resistance of the fabric, the ultraviolet resistance fabric with the UPF value of 50+ is obtained by processing the grey cloth of the pure cotton, cotton wool or polyester cotton fabric through the following processing flows:
white fabric: singeing → desizing → bleaching → liquid ammonia → whitening washing → tentering → preshrinking;
dyeing the fabric: singeing → desizing → bleaching → reduction dyeing → reduction fixation → liquid ammonia → tentering → preshrinking.
In the invention, the grammage of the pure cotton, cotton elastic or polyester cotton fabric is 120g/m 2 The above.
In the singeing procedure, the speed is 80-120 m/min, the flame intensity is 14-20 mbar, and the process is normal firing.
In the desizing and boiling process, the feed liquid used in the desizing process comprises the following components: 6-8 g/L desizing enzyme, 5-8 g/L penetrant, 4-6 g/L chelating agent, 5-7 g/L refining agent and the balance of water; the speed is 80-90 m/min, the temperature of the whole box is 100 ℃, and the piling time of the steam box is 15-20 min. The boiling-off process comprises the following feed liquid components: 40-50 g/L of caustic soda, 6-8 g/L of refining agent (SA-U), 6-8 g/L of refining agent (CRC), 6-8 g/L of penetrating agent, 4-6 g/L of chelating agent and the balance of water; the cloth stacking time of the steam box is 25-30 min.
In the bleaching process, the speed is 60-80 m/min, the temperature of a steam box is 100 ℃, the stacking time of the steam box is 15-25 min, and the used feed liquid comprises the following components: 2-4 g/L of caustic soda, 12-20 g/L of hydrogen peroxide with the concentration of 27.5wt.%, 6-10 g/L of chelating agent, 5-6 g/L of penetrating agent, 5-7 g/L of stabilizing agent and the balance of water.
In the liquid ammonia working procedure of the invention, the speed is 50-65 m/min, the temperature of the steaming chamber is 110-120 ℃, and the temperature of the treatment chamber is 60-70 ℃.
The necessary mercerizing procedure of the conventional pure cotton, polyester cotton and cotton elastic fabrics is omitted in the fabric processing flow, because the UPF value of the mercerized fabrics is about 50% lower than that of the fabrics which are not subjected to mercerizing by researching the fabrics with the same tissue specification, the ultraviolet resistance coefficient of the fabrics is greatly reduced, so that the liquid ammonia procedure is used for replacing alkali mercerizing, the dimensional stability of the fabrics is improved by the liquid ammonia procedure, and the UPF of the fabrics subjected to liquid ammonia processing can be improved by about 12% by experimental research.
In the whitening and washing process, the speed is 60-75 m/min, the temperature of the steam box is 100 ℃, and the temperature of the washing tank is 40-50 ℃.
In the reduction dyeing process, the reduction dye is adopted, the vehicle speed is 50-60 m/min, the infrared pre-drying temperature is 70-90 ℃, and the drying room temperature is 70-90 ℃.
The dyed fabric is dyed by using the vat dye, and compared with the reactive dye with the same concentration, the UPF value of the fabric dyed by the vat dye can be improved by about 35% after the fabric is dyed by the vat dye and the reactive dye.
In the reduction color fixing process, the speed is 50-70 m/min, the temperature of the whole box is 100 ℃, and the temperatures of the 1-8 # rinsing baths are 50 ℃, 60 ℃, 95 ℃, 60 ℃ and 50 ℃ in sequence.
In the tentering process of the present invention, the feed liquid composition used is: 20-60 g/L of anti-ultraviolet auxiliary agent ISYS-SUN, 20-40 g/L of hydrophilic softening agent MAS and the balance of water.
Wherein, the manufacturer of the ultraviolet-proof auxiliary agent ISYS-SUN is CHT company, and the manufacturer of the hydrophilic softening agent MAS is CHT company.
The tentering process uses the hydrophilic softening agent and the ultraviolet-proof auxiliary agent to be blended, so that the ultraviolet-proof auxiliary agent can better penetrate into the fiber and the hand feeling of the fabric is improved, and experiments prove that compared with the ultraviolet-proof auxiliary agent only padded, the UPF value of the fabric can be increased by more than 15% by blending the hydrophilic softening agent and the ultraviolet-proof auxiliary agent.
In the preshrinking process, the speed is 50-80 m/min, the blanket temperature is 100-120 ℃, the glue blanket temperature is 90-110 ℃, and the press distance is 5-18 mm.
Tests show that the UPF (ultraviolet protection factor) of the fabric processed and finished by the invention is more than or equal to 50.
Compared with the prior art, the invention has the following beneficial effects:
(1) The production mode of the invention has continuity, and can realize the continuous production of large goods;
(2) The UPF of the fabric processed and finished by the method reaches 50+, and the fabric is soft, comfortable and breathable in hand feeling;
(3) The alkali mercerizing process is not adopted in the fabric processing and finishing process, so that the emission of waste water and waste gas is reduced, and the fabric is green and environment-friendly;
(4) According to the invention, the water-absorbing softening agent and the ultraviolet-proof auxiliary agent are mixed in the tentering process, so that the hand feeling of the fabric is improved under the condition of improving UPF (ultra performance factor), and the wearing comfort of the fabric is improved.
Detailed Description
The present invention will be further described with reference to the following examples. The starting materials used in the examples are, unless otherwise specified, commercially available conventional starting materials; the processes used in the examples are, unless otherwise specified, conventional in the art.
Example 1
Fabric: CPT100/2 × 180 × 90 × 57/58; organization: 2/2Z; pure cotton white fabric.
The processing technology provided by the invention is adopted to improve the ultraviolet resistance of the fabric, and comprises the following steps:
(1) Singeing: the vehicle speed is 80m/min, the flame intensity is 20mbar, and normal combustion is carried out;
(2) And (3) cooking: the desizing process has the speed of 80m/min, the temperature of the whole box is 100 ℃, the stacking time of a steam box is 15min, and the used feed liquid comprises the following components: 6g/L desizing enzyme, 8g/L penetrant, 4g/L chelating agent, 7g/L refining agent and the balance of water; the boiling-off process steam box stacking time is 25min, and the used material liquid comprises the following components: 44g/L of caustic soda, 8g/L of refining agent (SA-U), 8g/L of refining agent (CRC), 8g/L of penetrating agent, 6g/L of chelating agent and the balance of water;
(3) Bleaching: the vehicle speed is 70m/min, the steam box temperature is 100 ℃, the steam box stacking time is 25min, and the used feed liquid comprises the following components: 4g/L of caustic soda, 20g/L of hydrogen peroxide with the concentration of 27.5wt.%, 6g/L of chelating agent, 6g/L of penetrating agent, 7g/L of stabilizing agent and the balance of water;
(4) Liquid ammonia: the speed of the vehicle is 65m/min, the temperature of the steaming chamber is 120 ℃, and the temperature of the treatment chamber is 70 ℃;
(5) Whitening and washing: the speed is 73m/min, the temperature of the steam box is 100 ℃, the temperature of the rinsing bath is 50 ℃, and the used material liquid comprises the following components: whitening agent CF-200 16g/L, and the balance of water;
(6) Tentering: the feed liquid comprises the following components: 20g/L of an anti-ultraviolet auxiliary agent ISYS-SUN, 30g/L of a hydrophilic softening agent MAS and the balance of water; the vehicle speed is 70m/min, the air volume on the drying room is 60%, the air volume under the drying room is 50%, and the temperature of the drying room (8 groups) is as follows: 120 ℃, 130 ℃ and 130 ℃;
(7) Pre-shrinking: the speed is 60m/min, the blanket temperature is 100 ℃, the rubber blanket temperature is 110 ℃, and the press distance is 6mm.
Through testing, the indexes of the finished fabric are as follows:
(1) breaking strength: ASTM D5034-2009 test method, warp direction: 64Lb, weft: 42Lb;
(2) tearing strength: ASTM D1424-2009 test method, warp direction: 5.1Lb, weft: 3.6Lb;
(3) UPF (ultraviolet protection factor), AATCC 183, UPF is more than or equal to 64.2.
Example 2
Fabric: CPT70 × SPANDEX50 (40D) + CM50 × 206 × 130/56; organization: 4/1 satin; cotton bullet dyed fabric.
The processing technology provided by the invention is adopted to improve the ultraviolet resistance of the fabric, and comprises the following steps:
(1) Singeing: the vehicle speed is 120m/min, the flame intensity is 20mbar, and normal combustion is carried out;
(2) And (3) stewing: the desizing process has the speed of 90m/min, the temperature of the whole box is 100 ℃, the stacking time of a steam box is 20min, and the used feed liquid comprises the following components: 8g/L desizing enzyme, 5g/L penetrant, 6g/L chelating agent, 5g/L refining agent and the balance of water; the stacking time of the boiling-off process steam box is 30min, and the used feed liquid comprises the following components: 40g/L of caustic soda, 6g/L of refining agent (SA-U), 6g/L of refining agent (CRC), 6g/L of penetrating agent, 4g/L of chelating agent and the balance of water;
(3) Bleaching: the speed of the vehicle is 80m/min, the temperature of the steam box is 100 ℃, and the piling time of the steam box is 15min; the feed liquid comprises the following components: 2g/L of caustic soda, 12g/L of hydrogen peroxide with the concentration of 27.5wt.%, 10g/L of chelating agent, 5g/L of penetrating agent, 5g/L of stabilizing agent and the balance of water;
(4) Reduction dyeing: the vehicle speed is 60m/min, the infrared pre-drying temperature is 90 ℃, the drying room temperature is 90 ℃, and the used material liquid comprises the following components: CLF 5.5g/L, 100% RB 0.53g/L, the remainder being water;
(5) And (3) reduction and fixation: the vehicle speed is 70m/min, the whole box temperature is 100 ℃, the 1-8 # rinsing bath temperatures are 50 ℃, 60 ℃, 95 ℃, 60 ℃ and 50 ℃ in sequence, and the used feed liquid comprises the following components: 50g/L of sodium hydrosulfite, 80g/L of caustic soda and the balance of water;
(6) Liquid ammonia: the speed of the vehicle is 55m/min, the temperature of the steaming chamber is 110 ℃, and the temperature of the treatment chamber is 60 ℃; liquid ammonia is carried out after the vat dye is used for dyeing and rolling dry, and the liquid ammonia is used for improving dyeing depth and improving fabric hand feeling and dimensional stability;
(7) Tentering: the feed liquid comprises the following components: 30g/L of an anti-ultraviolet auxiliary agent ISYS-SUN, 20g/L of a hydrophilic softening agent MAS and the balance of water; the vehicle speed is 60m/min, the air quantity on the drying room is 60%, the air quantity under the drying room is 50%, and the temperature of the drying room (8 groups) is as follows: 130 ℃, 130 ℃;
(8) Pre-shrinking: the speed is 70m/min, the blanket temperature is 100 ℃, the rubber blanket temperature is 110 ℃, and the press distance is 12mm.
Tests show that the indexes of the finished fabric are as follows:
(1) breaking strength: ASTM D5034-2009 test method, warp direction: 72Lb, weft: 50Lb;
(2) tearing strength: ASTM D1424-2009 test method, warp direction: 5.8Lb, weft: 4.2Lb;
(3) UPF (ultraviolet protection factor), AATCC 183, UPF is not less than 73.2.
Example 3
Fabric: CM40 × P150D 160 × 90 × 57/58; organizing: 2/1S; polyester cotton dyeing fabric.
The processing technology provided by the invention is adopted to improve the ultraviolet resistance of the fabric, and comprises the following steps:
(1) Singeing: the vehicle speed is 120m/min, the flame intensity is 14mbar, and normal combustion is carried out;
(2) And (3) stewing: the desizing process has the speed of 80m/min, the temperature of the whole box is 100 ℃, the stacking time of a steam box is 15min, and the used feed liquid comprises the following components: 6g/L desizing enzyme, 8g/L penetrant, 4g/L chelating agent, 7g/L refining agent and the balance of water; the boiling-off process steam box stacking time is 30min, and the used material liquid comprises the following components: 50g/L of caustic soda, 7g/L of refining agent (SA-U), 7g/L of refining agent (CRC), 7g/L of penetrating agent, 5g/L of chelating agent and the balance of water;
(3) Bleaching: the vehicle speed is 70m/min, the steam box temperature is 100 ℃, and the steam box stacking time is 20min; the feed liquid comprises the following components: 4g/L of caustic soda, 20g/L of hydrogen peroxide with the concentration of 27.5wt.%, 6g/L of chelating agent, 6g/L of penetrating agent, 7g/L of stabilizing agent and the balance of water;
(4) Reduction dyeing: the vehicle speed is 50m/min, the infrared pre-drying temperature is 70 ℃, the drying room temperature is 70 ℃, and the used material liquid comprises the following components: CLF 5.5g/L, 100% RB 0.53g/L, the remainder being water;
(5) And (3) reduction and fixation: the speed is 50m/min, the temperature of the whole box is 100 ℃, the temperature of the No. 1-8 rinsing bath is 50 ℃, 60 ℃, 95 ℃, 60 ℃ and 50 ℃ in sequence, and the used feed liquid comprises the following components: 50g/L sodium hydrosulfite, 80g/L caustic soda and the balance of water;
(6) Liquid ammonia: the speed of the vehicle is 55m/min, the temperature of the steaming chamber is 120 ℃, and the temperature of the treatment chamber is 70 ℃; liquid ammonia is carried out after the vat dye is used for dyeing and rolling dry, and is used for improving dyeing depth and improving fabric hand feeling and size stability;
(7) Tentering: the feed liquid comprises the following components: 30g/L of an anti-ultraviolet auxiliary agent ISYS-SUN, 20g/L of a hydrophilic softening agent MAS and the balance of water; the vehicle speed is 60m/min, the air volume on the drying room is 60%, the air volume under the drying room is 50%, and the temperature of the drying room (8 groups) is as follows: 130 ℃, 130 ℃;
(8) Pre-shrinking: the speed is 80m/min, the blanket temperature is 110 ℃, the rubber blanket temperature is 100 ℃, and the press distance is 8mm.
Tests show that the indexes of the finished fabric are as follows:
(1) breaking strength: ASTM D5034-2009 test method, warp direction: 43Lb, weft: 35Lb;
(2) tearing strength: ASTM D1424-2009 test method, warp direction: 4.6Lb, weft: 3.3Lb;
(3) UPF (ultraviolet protection factor), AATCC 183, UPF is not less than 78.5.
Comparative example 1
Fabric: CPT100/2 × 180 × 90 × 57/58; organization: 2/2Z; pure cotton white fabric.
The fabric is finished by adopting a conventional processing technology, and the steps are as follows:
(1) Singeing: the vehicle speed is 80m/min, the flame intensity is 20mbar, and normal combustion is carried out;
(2) And (3) stewing: the desizing process has the speed of 80m/min, the temperature of the whole box is 100 ℃, the stacking time of a steam box is 15min, and the used feed liquid comprises the following components: 6g/L desizing enzyme, 8g/L penetrant, 4g/L chelating agent, 7g/L refining agent and the balance of water; the stacking time of the boiling-off process steam box is 25min, and the used feed liquid comprises the following components: 44g/L of caustic soda, 8g/L of refining agent (SA-U), 8g/L of refining agent (CRC), 8g/L of penetrating agent, 6g/L of chelating agent and the balance of water;
(3) Bleaching: the speed is 70m/min, the temperature of the steam box is 100 ℃, the stacking time of the steam box is 25min, and the used feed liquid comprises the following components: 4g/L of caustic soda, 20g/L of hydrogen peroxide with the concentration of 27.5wt.%, 6g/L of chelating agent, 6g/L of penetrating agent, 7g/L of stabilizing agent and the balance of water;
(4) Mercerizing: the feed liquid comprises the following components: 210g/L of caustic soda and the balance of water; the temperature of the weak base is 50 ℃, and the vehicle speed is 70m/min;
(5) Whitening and washing: the speed of the vehicle is 73m/min, the temperature of the steam box is 100 ℃, the temperature of the rinsing bath is 50 ℃, and the used feed liquid comprises the following components: whitening agent CF-200 1lg/L, and the balance of water;
(6) Tentering: the feed liquid comprises the following components: 20g/L of ultraviolet-proof auxiliary agent ISYS-SUN, and the balance of water; the vehicle speed is 70m/min, the air quantity on the drying room is 60%, the air quantity under the drying room is 50%, and the temperature of the drying room (8 groups) is as follows: 120 deg.C, 130 deg.C;
(7) Pre-shrinking: the speed is 60m/min, the blanket temperature is 100 ℃, the rubber blanket temperature is 110 ℃, and the press distance is 6mm.
Tests show that the indexes of the finished fabric are as follows:
(1) breaking strength: ASTM D5034-2009 test method, warp direction: 64Lb, weft: 42Lb;
(2) tearing strength: ASTM D1424-2009 test method, warp direction: 5.1Lb, weft: 3.6Lb;
(3) UPF (ultraviolet protection factor), AATCC 183, UPF is more than or equal to 29.5.
Comparative example 2
Fabric: CPT70 × SPANDEX50 (40D) + CM50 × 206 × 130/56; organizing: 4/1 satin; cotton bullet dyed fabric.
The fabric is finished by adopting a conventional processing technology, and the steps are as follows:
(1) Singeing: the vehicle speed is 120m/min, the flame intensity is 20mbar, and normal combustion is carried out;
(2) And (3) stewing: the desizing process has the speed of 90m/min, the temperature of the whole box is 100 ℃, the stacking time of a steam box is 20min, and the used feed liquid comprises the following components: 8g/L desizing enzyme, 5g/L penetrant, 6g/L chelating agent, 5g/L refining agent and the balance of water; the boiling-off process steam box stacking time is 30min, and the used material liquid comprises the following components: 40g/L of caustic soda, 6g/L of refining agent (SA-U), 6g/L of refining agent (CRC), 6g/L of penetrating agent, 4g/L of chelating agent and the balance of water;
(3) Bleaching: the speed of the vehicle is 80m/min, the temperature of the steam box is 100 ℃, and the piling time of the steam box is 15min; the feed liquid comprises the following components: 2g/L of caustic soda, 12g/L of hydrogen peroxide with the concentration of 27.5wt.%, 10g/L of chelating agent, 5g/L of penetrating agent, 5g/L of stabilizing agent and the balance of water;
(4) Mercerizing: the feed liquid comprises the following components: 210g/L of caustic soda and the balance of water; the temperature of the weak base is 50 ℃, and the vehicle speed is 70m/min;
(5) And (3) reactive dyeing: the vehicle speed is 60m/min, the infrared pre-drying temperature is 90 ℃, the drying room temperature is 90 ℃, and the used feed liquid comprises the following components: BF-2B 0.28g/L, BE-BR 5.3g/L, and the balance of water;
(6) And (3) active fixation: the vehicle speed is 60m/min, the whole box temperature is 100 ℃, the temperatures of No. 1-8 rinsing baths are 50 ℃, 60 ℃, 95 ℃, 60 ℃ and 50 ℃ in sequence, and the used feed liquid comprises the following components: 30g/L of soda ash, 12g/L of caustic soda, 220g/L of anhydrous sodium sulphate and the balance of water;
(7) Tentering: the used feed liquid is: 30g/L of ultraviolet-proof auxiliary agent ISYS-SUN, and the balance of water; the vehicle speed is 60m/min, the air quantity on the drying room is 60%, the air quantity under the drying room is 50%, and the temperature of the drying room (8 groups) is as follows: 130 ℃, 130 ℃ and 130 ℃;
(8) Pre-shrinking: the speed is 70m/min, the blanket temperature is 100 ℃, the rubber blanket temperature is 110 ℃, and the press distance is 12mm.
Tests show that the indexes of the finished fabric are as follows:
(1) breaking strength: ASTM D5034-2009 test method, warp direction: 72Lb, weft: 50Lb;
(2) tearing strength: ASTM D1424-2009 test method, warp direction: 5.8Lb, weft: 4.2Lb;
(3) UPF (ultraviolet protection factor), AATCC 183, UPF is more than or equal to 22.4.
Claims (10)
1. A processing technology for improving ultraviolet resistance of fabric is characterized by comprising the following steps: the method comprises the following steps of processing grey cloth of pure cotton, cotton wool or polyester cotton fabric to obtain the ultraviolet-resistant fabric with a UPF value of 50 +:
white fabric: singeing → desizing → bleaching → liquid ammonia → whitening washing → tentering → preshrinking;
dyeing the fabric: singeing → desizing → bleaching → reduction dyeing → reduction fixation → liquid ammonia → tentering → preshrinking;
in the tentering process, the feed liquid comprises the following components: 20-60 g/L of anti-ultraviolet auxiliary agent ISYS-SUN, 20-40 g/L of hydrophilic softening agent MAS and the balance of water.
2. The processing technology for improving the ultraviolet resistance of the fabric according to claim 1, characterized in that: the grammage of the pure cotton, cotton elastic or polyester cotton fabric is 120g/m 2 The above.
3. The processing technology for improving the ultraviolet resistance of the fabric according to claim 1, which is characterized in that: in the singeing procedure, the vehicle speed is 80-120 m/min, the flame intensity is 14-20 mbar, and the process is just singed.
4. The processing technology for improving the ultraviolet resistance of the fabric according to claim 1, which is characterized in that: in the desizing and boiling procedure, the speed of the desizing process is 80-90 m/min, the temperature of the whole box is 100 ℃, and the cloth stacking time of a steam box is 15-20 min; the cloth piling time of the boiling-off process steam box is 25-30 min.
5. The processing technology for improving the ultraviolet resistance of the fabric according to claim 1, which is characterized in that: in the bleaching process, the speed is 60-80 m/min, the temperature of the steam box is 100 ℃, and the stacking time of the steam box is 15-25 min.
6. The processing technology for improving the ultraviolet resistance of the fabric according to claim 1, characterized in that: in the liquid ammonia process, the speed is 50-65 m/min, the temperature of the steaming chamber is 110-120 ℃, and the temperature of the treatment chamber is 60-70 ℃.
7. The processing technology for improving the ultraviolet resistance of the fabric according to claim 1, which is characterized in that: in the whitening washing procedure, the speed of the vehicle is 60-75 m/min, the temperature of the steam box is 100 ℃, and the temperature of the water washing tank is 40-50 ℃.
8. The processing technology for improving the ultraviolet resistance of the fabric according to claim 1, characterized in that: in the reduction dyeing process, a reduction dye is adopted, the vehicle speed is 50-60 m/min, the infrared pre-drying temperature is 70-90 ℃, and the drying room temperature is 70-90 ℃.
9. The processing technology for improving the ultraviolet resistance of the fabric according to claim 1, which is characterized in that: in the reduction color fixing process, the speed is 50-70 m/min, the temperature of the whole box is 100 ℃, and the temperature of the No. 1-8 rinsing bath is 50 ℃, 60 ℃, 95 ℃, 60 ℃ and 50 ℃ in sequence.
10. The processing technology for improving the ultraviolet resistance of the fabric according to claim 1, which is characterized in that: in the preshrinking procedure, the speed is 50-80 m/min, the blanket temperature is 100-120 ℃, the blanket temperature is 90-110 ℃, and the press distance is 5-18 mm.
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