Durable water-repellent environment-friendly knitted three-dimensional fabric and production process thereof

Abstract

The invention discloses a durable, water-repellent and environment-friendly knitted three-dimensional fabric and a production process thereof.The durable, water-repellent and environment-friendly knitted three-dimensional fabric is knitted on a 22G-28G double-face circular weft knitting machine, the convex part of a waffle lattice is knitted by 100D-300D elastic yarn, the concave part of the waffle lattice is knitted by 75D-200D elastic yarn, and the elastic yarn is woven on the convex part of the waffle lattice. And the thickness of the grey yarn of the convex part is 1.5-3 times that of the grey yarn of the concave part. The production process comprises the following steps of opening and sewing, refining, dyeing, drying, performing waterproof and water-sprinkling treatment and inspecting. The durable water-repellent environment-friendly knitted three-dimensional fabric prepared by the invention is breathable, water-repellent and strong in three-dimensional sense, the preparation process is continuous and controllable, the hand feeling and water-repellent durability of the fabric are greatly improved while the production efficiency is not influenced, and the hand feeling of the fabric can be greatly improved.

Description

Technical Field

[0001] The present invention belongs to the field of textile fabrics, and particularly relates to a durable water-repellent and environmentally friendly knitted three-dimensional fabric and its production process. Background Art

[0002] With the development of science and technology, the progress of society, and the improvement of living standards, people's requirements for the quality of life are getting higher and higher. Textiles have extended from the basic functions of covering the body and keeping warm to functions such as beauty, comfort, fashion, and protection. Similarly, outdoor clothing has extended from the basic functions of windproof and cold-proof to functions such as water-repellent, breathable, moisture-permeable, and windproof. People's consumption concepts have gradually developed from simple applicability to health care, environmental protection, and multi-functionality. Various intelligent and functional textiles have received extensive attention and development, which has put forward new requirements and challenges for the development of high-performance clothing.

[0003] The existing waffle fabric has weak three-dimensionality. Generally, the original yarn mixed with PU is used to make the fabric structure more three-dimensional. However, the three-dimensionality is generally not very strong. In addition, as is well known, the durable waterproof performance of knitted fabrics is generally not very good, which is related to the knitted fabric structure. Especially when performing water-repellent processing on this kind of waffle fabric, the difficulty is even greater. The level is generally 1-2 grades before washing.

[0004] The waffle fabric mixed with PU increases the elasticity and three-dimensionality of the fabric, but the gram weight will be very large and the comfort is poor. For the waffle fabric without PU, the elasticity is poor and there is no three-dimensionality. Especially, the waffle fabric itself has a much lower tightness than other circular knitting structures, and there are many and large gaps between the coils. Generally, water-repellent functional processing is not carried out on it. Even if processed, the water-repellent effect of the obtained water-repellent fabric is not good, only at the level of 1-2 grades before washing. The water-repellent performance drops sharply after washing. Summary of the Invention

[0005] Object of the Invention: To solve the deficiencies of the prior art, the present invention provides a durable water-repellent and environmentally friendly knitted three-dimensional fabric and its production process.

[0006] Technical Solution: A durable water-repellent and environmentally friendly knitted three-dimensional fabric is knitted on a 22G-28G double-sided circular weft knitting machine. The raised part of the waffle is knitted with elastic yarn of 100D-300D, and the concave part of the waffle is knitted with elastic yarn of 75D-200D. Among them, the fineness of the original yarn of the raised part is 1.5-3 times that of the original yarn of the concave part.

[0007] As an optimization: The elastic yarn is a fully recycled PBT / PET bicomponent fiber, and the PBT part is also a recycled fiber, or a fully recycled PTT / PET bicomponent fiber, and the PTT part is also a recycled fiber.

[0008] As an optimization: the size of the waffle is a square with a side length of 0.3-1 cm. According to the size of the square, the upper and lower needles are arranged in a 4:3, 6:4 or 8:6 manner, wherein the 4:3 manner is to pull out 3 needles after 4 consecutive needles; the 6:4 manner is to pull out 4 needles after 6 consecutive needles; the 8:6 manner is to pull out 6 needles after 8 consecutive needles.

[0009] As an optimization: one tissue cycle of the durable water-repellent and environmentally friendly knitted three-dimensional fabric is woven with 12, 18 or 24 needles; when 12 needles are used for weaving, 6 needles are half a tissue cycle, the first 4 needles are knitted with a single needle cylinder with full needle output and a single needle disk with half needle output, and the last 2 needle cylinder needle disks have full needle output; the other 6 needle outputs are opposite to the first 6 needle outputs, that is, the first 4 needles are knitted with a single needle disk and the last 2 needle cylinder needle disks have full needle output; when 18 or 24 needles are used for one tissue cycle, the needle output method is analogous to the above method, and the number of full needle outputs is changed to 3 or 5.

[0010] A production process of durable water-repellent environmentally friendly knitted three-dimensional fabric, comprising the following steps: opening the seam - scouring - dyeing - drying - water-repellent treatment - inspection; wherein:

[0011] The scouring temperature is 80-90°C and the speed is 25-35m / min;

[0012] The dyeing temperature is 130-135°C, the time is 30-40 minutes, and the reduction cleaning temperature after dyeing is 80-90°C, the time is 20 minutes;

[0013] The drying temperature is 130°C and the drying time is 2 minutes;

[0014] The plasma treatment method is as follows: power supply power 20KW, working frequency 25KHz, room temperature, voltage 15KV, air is added as reaction gas at room temperature differential pressure, and the equipment is turned on for 1-2 minutes to treat the fabric surface;

[0015] In the waterproof and splashing treatment, the splashing prescription includes: 5-15g / L acid, 5-20g / L penetrant, 30-70g / L propionic acid water repellent, 30-70g / L silicone water repellent, 5-20g / L isocyanate bridging agent; the drying temperature is 110-130°C, the time is 1 minute; the baking temperature is 150-170°C, the time is 1 minute; among them, in the acrylic water repellent: acrylate copolymer accounts for 20-25%, trimer 1,2-propylene glycol accounts for 10-15%; in the silicone water repellent: polydimethylsiloxane accounts for 20-25%, ethoxylated isotridecanol accounts for 4-5%; in the isocyanate bridging agent: dipropylene glycol accounts for 4-5%, and isocyanate compounds account for 15-20%.

[0016] As an optimization: the height difference between the front and back of the fabric of the durable water-repellent and environmentally friendly knitted three-dimensional fabric is 0.2 - 0.5 cm.

[0017] As an optimization: the ISO4920 standard water-repellent grade of the durable water-repellent and environmentally friendly knitted three-dimensional fabric is Grade 4 before washing and still reaches Grade 3 - 4 after 10 washes.

[0018] As an optimization: the air permeability of the IS09237 standard fabric of the durable water-repellent and environmentally friendly knitted three-dimensional fabric is greater than or equal to 150 cc.

[0019] Beneficial effects: The durable water-repellent and environmentally friendly knitted three-dimensional fabric prepared by the present invention is breathable, water-repellent, and has a strong three-dimensional sense. The preparation process is continuous and controllable, does not affect production efficiency, and greatly improves the fabric feel and water-repellent durability, and can significantly improve the fabric feel. Description of the Drawings

[0020] Figure 1 It is a structural schematic diagram of the present invention. Detailed Embodiments

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below, so that those skilled in the art can better understand the advantages and features of the present invention, and thus make a clearer definition of the protection scope of the present invention. The embodiments described in the present invention are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention. Specific Embodiment 1

[0023] As Figure 1 shown, a durable water-repellent and environmentally friendly knitted three-dimensional fabric is knitted on a 22G double-sided circular weft knitting machine. The raised part of the waffle is knitted with 100D elastic yarn, and the concave part of the waffle is knitted with 75D elastic yarn. Among them, the fineness of the original yarn of the raised part is 1.5 times that of the concave part.

[0024] The elastic yarn is a fully recycled PBT / PET bicomponent fiber, and the PBT part is also a recycled fiber, or a fully recycled PTT / PET bicomponent fiber, and the PTT part is also a recycled fiber.

[0025] The size of the waffle grid is a square with a side length of 0.3 cm. According to the size of the square, the upper and lower needles are arranged in a 4:3, 6:4 or 8:6 manner, wherein the 4:3 manner is to pull out 3 needles after 4 consecutive needles; the 6:4 manner is to pull out 4 needles after 6 consecutive needles; and the 8:6 manner is to pull out 6 needles after 8 consecutive needles.

[0026] One weave cycle of the durable water-repellent environmentally friendly knitted three-dimensional fabric is woven with 12, 18 or 24 loops; when 12 loops are used, 6 loops are half a weave cycle, the first 4 loops are woven with single cylinder full needle out and single needle disk half needle out, and the last 2 loops are woven with full needle out of the needle cylinder. The other 6 loops are woven in the opposite way to the previous 6 loops, that is, the first 4 loops are woven with single needle disk out and the last 2 loops are woven with full needle out of the needle cylinder; when 18 or 24 loops are woven for one weave cycle, the needle out method is similar to the above method, and the number of full needle out is changed to 3 or 5 loops.

[0027] A production process of durable water-repellent environmentally friendly knitted three-dimensional fabric, comprising the following steps: opening the seam - scouring - dyeing - drying - water-repellent treatment - inspection; wherein:

[0028] The scouring temperature is 80°C and the speed is 25m / min;

[0029] The dyeing temperature is 130°C for 30 minutes, and the reduction cleaning temperature after dyeing is 80°C for 20 minutes;

[0030] The drying temperature is 130°C and the drying time is 2 minutes;

[0031] The plasma treatment method is as follows: power supply power 20KW, working frequency 25KHz, room temperature, voltage 15KV, air is added as reaction gas at room temperature differential pressure, and the equipment is turned on for 1 minute to treat the fabric surface.

[0032] In the waterproof and splashing treatment, the splashing formula includes: 5g / L acid, 5g / L penetrant, 30g / L propionic acid water repellent, 30g / L silicone water repellent, 5g / L isocyanate bridging agent; the drying temperature is 110°C, the time is 1 minute; the baking temperature is 150°C, the time is 1 minute. Among them, in the acrylic water repellent: acrylate copolymer accounts for 20%, trimer 1,2 propylene glycol accounts for 10%; in the silicone water repellent: polydimethylsiloxane accounts for 20%, ethoxylated isotridecanol accounts for 4%; in the isocyanate bridging agent: dipropylene glycol accounts for 4%, isocyanate compound accounts for 15%.

[0033] The height difference between the surface and the inside of the durable water-repellent and environment-friendly knitted three-dimensional fabric is 0.2 cm.

[0034] The ISO standard water repellency level of the durable water repellent environmentally friendly knitted three-dimensional fabric is: level 4 before washing, and still reaches level 3-4 after 10 washings. The air permeability of the ISO standard fabric is greater than or equal to 150cc. Specific embodiment 2

[0036] like Figure 1 As shown, a durable water-repellent and environmentally friendly knitted three-dimensional fabric is woven on a 28G double-sided circular knitting machine, the waffle raised part is woven with 300D elastic yarn, and the waffle concave part is woven with 200D elastic yarn, wherein the original yarn thickness of the raised part is 3 times the original yarn thickness of the concave part.

[0037] The elastic yarn is a fully regenerated PBT / PET bicomponent fiber, the PBT portion is also a regenerated fiber, or a fully regenerated PTT / PET bicomponent fiber, the PTT portion is also a regenerated fiber.

[0038] The size of the waffle grid is a square with a side length of 1 cm. According to the size of the square, the upper and lower needles are arranged in a 4:3, 6:4 or 8:6 manner, wherein the 4:3 manner is to pull out 3 needles after 4 consecutive needles; the 6:4 manner is to pull out 4 needles after 6 consecutive needles; and the 8:6 manner is to pull out 6 needles after 8 consecutive needles.

[0039] One weave cycle of the durable water-repellent and environmentally friendly knitted three-dimensional fabric is woven using 12, 18 or 24 loops; when 12 loops are used for weaving, 6 loops are half a weave cycle, the first 4 loops are woven using a single needle cylinder with full needle output and a single needle disk with half needle output, and the last 2 loops are woven using a needle cylinder with full needle output; the other 6 loops are woven in the opposite manner to the first 6 loops, that is, the first 4 loops are woven using a single needle disk with needle output, and the last 2 loops are woven using a needle cylinder with full needle output; when 18 or 24 loops are used for weaving one weave cycle, the needle output method is analogous to the above method, and the number of full needle outputs is changed to 3 or 5 loops.

[0040] A production process of durable water-repellent environmentally friendly knitted three-dimensional fabric, comprising the following steps: opening the seam - scouring - dyeing - drying - water-repellent treatment - inspection; wherein:

[0041] The scouring temperature is 90°C and the speed is 35m / min;

[0042] The dyeing temperature is 135°C for 40 minutes, and the reduction cleaning temperature after dyeing is 90°C for 20 minutes;

[0043] The drying temperature is 130°C and the drying time is 2 minutes;

[0044] The described plasma treatment method is as follows: power of the power supply is 20KW, operating frequency is 25KHz, at room temperature, voltage is 15KV, and air is added as the reaction gas under normal temperature differential pressure. The equipment is started for 1 minute to treat the fabric surface.

[0045] In the described water-repellent treatment, the water-repellent formulation includes: acid 15g / L, penetrant 20g / L, acrylic acid-based water repellent 70g / L, silicone-based water repellent 70g / L, isocyanate-based crosslinking agent 20g / L; drying temperature is 130°C and time is 1 minute; curing temperature is 170°C and time is 1 minute. Among them, in the acrylic acid-based water repellent: acrylate copolymer accounts for 25%, and 1,2-propanediol trimer accounts for 15%; in the silicone-based water repellent: polydimethylsiloxane accounts for 25%, and ethoxyisotridecanol accounts for 5%; in the isocyanate-based crosslinking agent: dipropylene glycol accounts for 5%, and isocyanate compound accounts for 20%.

[0046] The height difference between the front and back of the fabric of the described durable water-repellent and environmentally friendly knitted three-dimensional fabric is 0.5 cm.

[0047] The ISO4920 standard water-repellent grade of the described durable water-repellent and environmentally friendly knitted three-dimensional fabric: it is grade 4 before washing and still reaches grade 4 after 10 washes. The air permeability of the ISO9237 standard fabric is greater than or equal to 150 cc. Specific Example 3

[0049] As Figure 1 shown, a durable water-repellent and environmentally friendly knitted three-dimensional fabric, the described durable water-repellent and environmentally friendly knitted three-dimensional fabric is knitted on a 26G double-sided circular weft knitting machine. The raised part of the waffle is knitted with 200D elastic yarn, and the concave part of the waffle is knitted with 140D elastic yarn. Among them, the fineness of the original yarn of the raised part is 2 times that of the concave part.

[0050] The described elastic yarn is a fully recycled PBT / PET bicomponent fiber, and the PBT part is also a recycled fiber, or a fully recycled PTT / PET bicomponent fiber, and the PTT part is also a recycled fiber.

[0051] The size of the described waffle is a square with a side length of 0.6 cm. According to the size of the square, both the upper and lower needles adopt a needle arrangement method of 4:3 or 6:4 or 8:6. Among them, the 4:3 needle arrangement method is to withdraw 3 needles after 4 consecutive needles; the 6:4 needle arrangement method is to withdraw 4 needles after 6 consecutive needles; the 8:6 needle arrangement method is to withdraw 6 needles after 8 consecutive needles.

[0052] One repeat of the structure of the durable water-repellent and environmentally friendly knitted three-dimensional fabric is knitted with 12 courses or 18 courses or 24 courses; when knitted with 12 courses, 6 courses are half a repeat. In the first 4 courses, all needles on the single cylinder are out, and half of the needles on the single dial are out for knitting. In the last 2 courses, all needles on the cylinder and dial are out. For the other 6 courses, the needle-out mode is opposite to that of the previous 6 courses, that is, in the first 4 courses, needles on the single dial are out, and in the last 2 courses, all needles on the cylinder and dial are out for knitting; when knitting one repeat with 18 courses or 24 courses, the needle-out mode follows the above method by analogy, and the number of courses with all needles out changes to 3 courses or 5 courses.

[0053] A production process of a durable water-repellent and environmentally friendly knitted three-dimensional fabric includes the following steps: unseaming and seaming the fabric - scouring - dyeing - drying - water-repellent treatment - inspection; where:

[0054] The temperature of the scouring is 84°C and the speed is 29 m / min;

[0055] The temperature of the dyeing is 132°C and the time is 35 minutes. After dyeing, the reduction cleaning temperature is 85°C and the time is 20 minutes;

[0056] The temperature of the drying is 130°C and the time is 2 minutes;

[0057] The method of the plasma treatment is as follows: the power of the power supply is 20 KW, the working frequency is 25 KHz, at room temperature, the voltage is 15 KV, air is added as the reaction gas under normal temperature differential pressure, and the equipment is started for 2 minutes to treat the fabric surface.

[0058] In the water-repellent treatment, the water-repellent formulation includes: 10 g / L of acid, 12 g / L of penetrant, 50 g / L of acrylic acid-based water repellent, 50 g / L of silicone-based water repellent, 14 g / L of isocyanate-based crosslinking agent; the drying temperature is 120°C and the time is 1 minute; the baking temperature is 160°C and the time is 1 minute. Among them, in the acrylic acid-based water repellent: the acrylate copolymer accounts for 23%, and the trimer of 1,2-propanediol accounts for 12%; in the silicone-based water repellent: polydimethylsiloxane accounts for 22%, and ethoxyisotridecanol accounts for 4.5%; in the isocyanate-based crosslinking agent: dipropylene glycol accounts for 4.5%, and the isocyanate compound accounts for 17%.

[0059] The height difference between the front and back of the fabric of the durable water-repellent and environmentally friendly knitted three-dimensional fabric is 0.4 cm.

[0060] The IS4920 standard water-repellent grade of the durable water-repellent and environmentally friendly knitted three-dimensional fabric: it is Grade 4 before washing and still reaches Grade 4 after 10 washes. The air permeability of the ISO9237 standard fabric is greater than or equal to 150 cc.

[0061] The durable water-repellent and environmentally friendly knitted three-dimensional fabric prepared by the present invention is breathable, water-repellent, and has a strong three-dimensional sense. The preparation process is continuous and controllable, which does not affect the production efficiency while greatly improving the fabric handle and water-repellent durability, and can significantly improve the fabric handle.

Claims

1. A durable water-repellent environmentally friendly knitted three-dimensional fabric, characterized by: The durable water-repellent and environmentally friendly knitted three-dimensional fabric is woven on a 22G-28G double-sided circular knitting machine, the raised part of the waffle is woven with 100D-300D elastic yarn, and the concave part of the waffle is woven with 75D-200D elastic yarn, wherein the original yarn thickness of the raised part is 1.5-3 times the original yarn thickness of the concave part.

2. The durable water-repellent and environmentally friendly knitted three-dimensional fabric according to claim 1, characterized in that: The elastic yarn is a fully regenerated PBT / PET bicomponent fiber, the PBT portion is also a regenerated fiber, or a fully regenerated PTT / PET bicomponent fiber, the PTT portion is also a regenerated fiber.

3. The durable water-repellent and environmentally friendly knitted three-dimensional fabric according to claim 1, characterized in that: The size of the waffle grid is a square with a side length of 0.3-1 cm. According to the size of the square, the upper and lower needles are arranged in a 4:3, 6:4 or 8:6 arrangement. The 4:3 arrangement is to pull out 3 needles after 4 consecutive needles; the 6:4 arrangement is to pull out 4 needles after 6 consecutive needles; and the 8:6 arrangement is to pull out 6 needles after 8 consecutive needles.

4. The durable water-repellent and environmentally friendly knitted three-dimensional fabric according to claim 1, characterized in that: One weave cycle of the durable water-repellent and environmentally friendly knitted three-dimensional fabric is woven using 12, 18 or 24 loops; when 12 loops are used for weaving, 6 loops are half a weave cycle, the first 4 loops are woven using a single needle cylinder with full needle output and a single needle disk with half needle output, and the last 2 loops are woven using a needle cylinder with full needle output; the other 6 loops are woven in the opposite manner to the first 6 loops, that is, the first 4 loops are woven using a single needle disk with needle output, and the last 2 loops are woven using a needle cylinder with full needle output; when 18 or 24 loops are used for weaving one weave cycle, the needle output method is analogous to the above method, and the number of full needle outputs is changed to 3 or 5 loops.

5. A production process for durable water-repellent environmentally friendly knitted three-dimensional fabric, characterized by: The process includes the following steps: opening the seam - scouring - dyeing - drying - plasma treatment - waterproofing - inspection; among which: The scouring temperature is 80-90°C and the speed is 25-35m / min; The dyeing temperature is 130-135°C, the time is 30-40 minutes, and the reduction cleaning temperature after dyeing is 80-90°C, the time is 20 minutes; The drying temperature is 130°C and the drying time is 2 minutes; The plasma treatment method is as follows: power supply power 20KW, working frequency 25KHz, room temperature, voltage 15KV, air is added as reaction gas at room temperature differential pressure, and the equipment is turned on for 1-2 minutes to treat the fabric surface; In the waterproof and splashing treatment, the splashing prescription includes: 5-15g / L acid, 5-20g / L penetrant, 30-70g / L propionic acid water repellent, 30-70g / L silicone water repellent, 5-20g / L isocyanate bridging agent; the drying temperature is 110-130°C, the time is 1 minute; the baking temperature is 150-170°C, the time is 1 minute; among them, in the acrylic water repellent: acrylate copolymer accounts for 20-25%, trimer 1,2-propylene glycol accounts for 10-15%; in the silicone water repellent: polydimethylsiloxane accounts for 20-25%, ethoxylated isotridecanol accounts for 4-5%; in the isocyanate bridging agent: dipropylene glycol accounts for 4-5%, and isocyanate compounds account for 15-20%.

6. The production process of the durable water-repellent and environmentally friendly knitted three-dimensional fabric according to claim 5, characterized in that: The height difference between the surface and the inside of the durable water-repellent and environment-friendly knitted three-dimensional fabric is 0.2-0.5 cm.

7. The production process of the durable water-repellent and environmentally friendly knitted three-dimensional fabric according to claim 5, characterized in that: The ISO4920 standard water repellency level of the durable water repellent environmentally friendly knitted three-dimensional fabric is: level 4 before washing, and still reaches level 3-4 after washing 10 times.

8. The production process of the durable water-repellent and environmentally friendly knitted three-dimensional fabric according to claim 5, characterized in that: The air permeability of the ISO9237 reference fabric of the durable water-repellent and environmentally friendly knitted three-dimensional fabric is greater than or equal to 150cc.

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