阅读说明：本技术 一种易上色的针织面料及其生产方法 (Knitted fabric easy to color and production method thereof ) 是由 邓铁 于 2021-06-25 设计创作，主要内容包括：本发明具体涉及一种易上色的针织面料及其生产方法,所述针织面料包括如下质量百分比的原料：天然棉纤维45-60％、改性涤纶纤维30-40％、混纺纱10-25％,所制得针织面料手感柔软、弹性优良、吸湿排汗、接触凉感和耐磨性强。所述针织面料采用一次浴洗染色工艺使得针织面料易染色,染色后的针织面料色牢度强且稳定性高。本发明针织面料的生产方法工艺简单、生产成本低、能耗少且生产效率高。(The invention particularly relates to an easily colored knitted fabric and a production method thereof, wherein the knitted fabric comprises the following raw materials in percentage by mass: 45-60% of natural cotton fiber, 30-40% of modified polyester fiber and 10-25% of blended yarn, and the prepared knitted fabric is soft in hand feeling, excellent in elasticity, capable of absorbing moisture and releasing sweat, cool in touch and strong in wear resistance. The knitted fabric is easy to dye by adopting a one-time bath dyeing process, and the dyed knitted fabric is strong in color fastness and high in stability. The production method of the knitted fabric has the advantages of simple process, low production cost, low energy consumption and high production efficiency.)

1. The utility model provides an easy knitted fabric who colors which characterized in that: the knitted fabric comprises the following raw materials in percentage by mass: 45-60% of natural cotton fiber, 30-40% of modified polyester fiber and 10-25% of blended yarn.

2. An easily colored knitted fabric according to claim 1, wherein: the blended yarn is prepared by mixing 50-70% of viscose fiber and UHMWPE fiber in a blending ratio by weight: 30-50% of the blend.

3. An easily colored knitted fabric according to claim 1, wherein: the preparation method of the modified polyester fiber comprises the following steps: adding polyester fibers into 1-1.2g/L JFC penetrant, and then adding 8-10g/L sodium hydroxide solution, wherein the bath ratio is 1:10-12, raising the temperature to 100-130 ℃, keeping the temperature for 30-60min, then discharging waste liquid, adding water for cleaning, raising the temperature to 60-70 ℃, then adding 1-2g/L of terylene oligomer detergent for cleaning, washing with water, dehydrating and drying to obtain the modified terylene fiber.

4. A method for producing a knitted fabric easy to color according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:

A. processing blended yarns: processing the viscose fiber and the UHMWPE fiber into blended yarn through a spinning process;

B. pretreatment of blended yarn: b, performing dipping, padding and pre-setting treatment on the blended yarn obtained in the step A by using a finishing agent;

C. weaving the fabric: weaving the modified polyester fiber, the natural cotton fiber and the blended yarn into grey cloth of the knitted fabric by using a circular knitting machine according to the formula amount;

D. dip dyeing treatment of the knitted fabric: c, dyeing the grey cloth of the knitted fabric obtained in the step C;

E. finishing and processing the knitted fabric: and D, sanding, shearing and high-temperature setting and finishing the knitted fabric dyed in the step D to obtain the knitted fabric.

5. The method for producing knitted fabric easy to color according to claim 4, characterized in that: the finishing agent of the step B is at least one of ZL-523, SANITEX COOL-Z and Queenlight CL-7S.

6. The method for producing knitted fabric easy to color according to claim 4, characterized in that: the dyeing in the step D adopts a one-bath dyeing process, and the dyeing process in the one-bath process comprises the following steps:

the method comprises the following steps: adding reactive dye and disperse dye into a dye bath, raising the temperature to 30-40 ℃, adding acetic acid/sodium acetate buffer solution to adjust the pH value to be within the range of 5-5.5, adding 1.5-3g/L dyeing auxiliary agent, raising the temperature to 125-plus 135 ℃, and keeping the temperature for 30-40min to dye the modified polyester fiber and the blended yarn;

step two: reducing the temperature to 70-80 ℃, adding 50-60g/L anhydrous sodium sulphate and 4-6g/L fixation alkali, and keeping the temperature for 30-40min to dye the natural cotton fiber;

step three: and (3) draining the dye liquor in the second step, adding water, keeping the temperature to be 30-40 ℃, adding 6-8g/L soaping agent, raising the temperature to be 90-100 ℃, keeping the temperature for 15-30min, draining the soaping waste liquor, finally adding water, washing and drying.

7. The method for producing knitted fabric easy to color according to claim 6, characterized in that: the reactive dye is a divinyl sulfone type reactive dye or a hetero-di-reactive group reactive dye.

8. The method for producing knitted fabric easy to color according to claim 6, characterized in that: the dyeing auxiliary comprises a dispersion leveling agent, an oil removing agent and a chelating agent, and the mass concentration ratio of the dispersion leveling agent to the oil removing agent to the chelating agent is 1:3-4: 1.

9. The method for producing knitted fabric easy to color according to claim 6, characterized in that: the soaping agent is polyester soaping agent.

10. The method for producing knitted fabric easy to color according to claim 6, characterized in that: in the step of the one-bath dyeing process, the bath ratio is 1: 10-12.

Technical Field

The invention relates to the technical field of knitted fabrics, in particular to an easily colored knitted fabric and a production method thereof.

Background

The cotton polyester knitted fabric not only has comfortable and soft properties of cotton fabrics, but also keeps good crease resistance and wear resistance of polyester, is soft in hand feeling, easy to wash and quick to dry, absorbs moisture and perspires, and plays an important role in various garment fabrics. But due to the content difference of the cotton component and the terylene component, the texture, the comfort, the durability and other performances of the prepared fabric are obviously different. The dyeing properties of the terylene and cotton components in the production process are greatly different, the dyeing process flow is complex, the time consumption is long, and the dyeing effect is uneven. The existing dyeing process for cotton-polyester fabrics usually adopts a disperse/direct, disperse/active and disperse/reduction two-bath dip dyeing method, but the two-bath method has the disadvantages of long process flow, complicated process, water and energy consumption, high dyeing cost and more fabric defects. The production method of the fabric has urgent improvement and optimization requirements on fabric manufacturing enterprises seeking economic benefit, production efficiency, energy conservation and consumption reduction at present.

Disclosure of Invention

The invention aims to solve the defects of the prior art and provide the knitted fabric which is easy to color, soft in texture, cool in touch, moisture-absorbing, breathable, excellent in elasticity, good in light resistance and wear resistance, easy to dye, strong in color fastness and high in stability.

The invention also aims to provide a production method of the knitted fabric easy to color, which has the advantages of simple process flow, low production cost and low energy consumption and is suitable for large-scale popularization and application.

The purpose of the invention is realized by the following technical scheme:

the knitted fabric easy to color comprises the following raw materials in percentage by mass: 45-60% of natural cotton fiber, 30-40% of modified polyester fiber and 10-25% of blended yarn.

Preferably, the blended yarn is prepared by mixing 50-70% of viscose fiber and UHMWPE fiber by weight: 30-50% of the blend.

According to the technical scheme, the fabric woven by using the natural cotton fibers, the modified polyester fibers and the blended yarns as raw materials is soft in hand feeling, excellent in elasticity, capable of absorbing moisture and releasing sweat, cool in touch and strong in wear resistance. The natural cotton fiber is moisture-absorbing and breathable, is soft and is not easy to ball, the modified polyester fiber is good in elasticity, strong in wear resistance and light resistance and not easy to deform, the blended yarn has good radiation resistance, ultraviolet resistance and light and wear resistance, and the touch feeling is cool and dry.

Preferably, the preparation method of the modified polyester fiber comprises the following steps: adding polyester fibers into 1-1.2g/L JFC penetrant, and then adding 8-10g/L sodium hydroxide solution, wherein the bath ratio is 1:10-12, raising the temperature to 100-130 ℃, keeping the temperature for 30-60min, then discharging waste liquid, adding water for cleaning for 10-20min, raising the temperature to 60-70 ℃, then adding 1-2g/L of a terylene oligomer detergent for cleaning for 20-30min, cleaning for 10-20min with water, and then dehydrating and drying to obtain the modified terylene fiber.

In the invention, the polyester fiber is modified by adopting the steps, so that the problems of poor dyeing property, poor air permeability, easiness in pilling and easiness in electrostatic generation of the polyester fiber are solved. Through the modification of the steps, the surface of the modified polyester fiber becomes rough and generates micropores, the surface area is increased, and the softness is also better improved.

The other purpose of the invention is realized by the following technical scheme:

a production method of the knitted fabric easy to color comprises the following steps:

A. processing blended yarns: processing the viscose fiber and the UHMWPE fiber into blended yarn through a spinning process;

B. pretreatment of blended yarn: b, performing dipping, padding and pre-setting treatment on the blended yarn obtained in the step A by using a finishing agent;

C. weaving the fabric: weaving the modified polyester fiber, the natural cotton fiber and the blended yarn into grey cloth of the knitted fabric by using a circular knitting machine according to the formula amount;

D. dip dyeing treatment of the knitted fabric: c, dyeing the grey cloth of the knitted fabric obtained in the step C;

E. finishing and processing the knitted fabric: and D, sanding, shearing and high-temperature setting and finishing the knitted fabric dyed in the step D to obtain the knitted fabric.

Preferably, the finishing agent of the step B is at least one of ZL-523, SANITEX COOL-Z and Queenlight CL-7S.

Preferably, the dyeing in the step D adopts a one-bath dyeing process, and the dyeing process in the one-bath process comprises the following steps:

the method comprises the following steps: adding reactive dye and disperse dye into a dye bath, raising the temperature to 30-40 ℃, adding acetic acid/sodium acetate buffer solution to adjust the pH value to be within the range of 5-5.5, adding 1.5-3g/L dyeing auxiliary agent, raising the temperature to 125-plus 135 ℃, and keeping the temperature for 30-40min to dye the modified polyester fiber and the blended yarn;

step two: reducing the temperature to 70-80 ℃, adding 50-60g/L anhydrous sodium sulphate and 4-6g/L fixation alkali, and keeping the temperature for 30-40min to dye the natural cotton fiber;

step three: and (3) draining the dye liquor in the second step, adding water, keeping the temperature to be 30-40 ℃, adding 6-8g/L soaping agent, raising the temperature to be 90-100 ℃, keeping the temperature for 15-30min, draining the soaping waste liquor, finally adding water, washing and drying.

More preferably, the reactive dye is a divinyl sulfone type reactive dye or a hetero-di-reactive group reactive dye.

More preferably, the dyeing auxiliary comprises a dispersion leveling agent, an oil removing agent and a chelating agent, and the mass concentration ratio of the dispersion leveling agent to the oil removing agent to the chelating agent is 1:3-4: 1.

More preferably, the soaping agent is a polyester type soaping agent.

More preferably, in the one-bath dyeing process step, the bath ratio is 1: 10-12.

According to the invention, the preparation method of the knitted fabric has the advantages of simple process steps, simple processing and high production efficiency, and the prepared knitted fabric has few defects and high product quality. In the step B of pretreatment of the blended yarn, the blended yarn consisting of the viscose fiber and the UHMWPE fiber is subjected to cool feeling treatment by using a finishing agent, so that the blended yarn has good contact cool feeling characteristics. In the step D, the one-bath dyeing process is adopted, and is simple in process, mild in condition and short in time. Compared with the traditional two-bath method, the one-bath method dyeing process disclosed by the invention has the advantages that the production efficiency is greatly improved, the production cost is remarkably reduced, the energy consumption is reduced, and the dyed knitted fabric has high stability and high color fastness. In the first step, the pH of the system is adjusted to 5 to 5.5, so that the hydrolysis reaction of the reactive dye under the high-temperature condition can be reduced, and the activity of the reactive group is ensured. The addition of the dyeing auxiliary agent can properly increase the solubility of the reactive dye and the disperse dye, promote the adsorption and diffusion of the dye on the fiber surface and improve the dispersion stability of the dye in a system. The dispersing and leveling agent can prevent fabric defects formed in the weaving process of the fabric from influencing the dyeing uniformity. The soaping agent adopted in the third step can effectively remove residual dye on the surface of the fiber and remove loose color. Preferably, the soaping agent is a polyester soaping agent, and the soaping agent has strong loose color removing capacity and improves the color fastness of the knitted fabric.

The invention has the beneficial effects that: the knitted fabric easy to color prepared by the method disclosed by the invention is soft in texture, cool in touch, moisture-absorbing and breathable, excellent in elasticity, good in light resistance and wear resistance, strong in color fastness and high in stability. Moreover, the production method of the knitted fabric is simple in process and mild and controllable in conditions, the dyeing production efficiency is greatly improved, the energy is saved, the consumption is reduced, and the production cost is remarkably reduced through the one-bath dyeing process.

Detailed Description

The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.

Example 1

The knitted fabric easy to color comprises the following raw materials in percentage by mass: 45% of natural cotton fiber, 30% of modified polyester fiber and 25% of blended yarn.

In the embodiment, the blended yarn is prepared by mixing viscose fibers and UHMWPE fibers in a blending ratio of 50%: 50 percent of the blend is blended.

In this embodiment, the preparation method of the modified polyester fiber comprises the following steps: adding polyester fibers into 1g/L JFC penetrant, and then adding 8g/L sodium hydroxide solution, wherein the bath ratio is 1: and 10, raising the temperature to 100 ℃, keeping the temperature for 60min, then discharging waste liquid, adding water for washing for 10min, raising the temperature to 60 ℃, then adding 1g/L of polyester oligomer detergent for washing for 20min, washing for 10min with water, and then dehydrating and drying to obtain the modified polyester fiber.

A production method of the knitted fabric easy to color comprises the following steps:

A. processing blended yarns: processing the viscose fiber and the UHMWPE fiber into blended yarn through a spinning process;

B. pretreatment of blended yarn: b, performing dipping, padding and pre-setting treatment on the blended yarn obtained in the step A by using a finishing agent;

C. weaving the fabric: weaving the modified polyester fiber, the natural cotton fiber and the blended yarn into grey cloth of the knitted fabric by using a circular knitting machine according to the formula amount;

D. dip dyeing treatment of the knitted fabric: c, dyeing the grey cloth of the knitted fabric obtained in the step C;

E. finishing and processing the knitted fabric: and D, sanding, shearing and high-temperature setting and finishing the knitted fabric dyed in the step D to obtain the knitted fabric.

In this example, the finishing agent of step B is ZL-523, and the concentration of the finishing agent is 60 g/L.

In this embodiment, the dyeing in step D adopts a one-bath dyeing process, and the dyeing process in the one-bath process includes the following steps:

the method comprises the following steps: adding reactive dye and disperse dye into a dye bath, raising the temperature to 30 ℃, adding acetic acid/sodium acetate buffer solution to adjust the pH value to be within 5, adding 1.5g/L dyeing auxiliary agent, raising the temperature to 125 ℃, and keeping the temperature for 30min to dye the modified polyester fibers and the blended yarns;

step two: reducing the temperature to 70 ℃, adding 50g/L of anhydrous sodium sulphate and 4g/L of fixation alkali, and keeping the temperature for 30min to dye the natural cotton fiber;

step three: and (3) draining the dye liquor in the second step, adding water, keeping the temperature to be 30 ℃, adding 6g/L soaping agent, raising the temperature to be 90 ℃, keeping the temperature for 30min, draining the soaping waste liquor, and finally adding water for washing and drying.

In this embodiment, the reactive dye is a hetero-double reactive group reactive dye, specifically a reactive blue 2GF dye.

In this embodiment, the dyeing assistant includes a dispersion leveling agent, an oil removal agent, and a chelating agent, and the mass concentration ratio of the dispersion leveling agent, the oil removal agent, and the chelating agent is 1:3: 1.

In this embodiment, the soaping agent is polyester soaping agent WWRC.

In this embodiment, in the one-bath dyeing process, the bath ratio is 1: 10.

Example 2

The knitted fabric easy to color comprises the following raw materials in percentage by mass: 50% of natural cotton fiber, 35% of modified polyester fiber and 15% of blended yarn.

In the embodiment, the blended yarn is prepared by mixing viscose fibers and UHMWPE fibers in a blending ratio of 65% by weight: 35 percent of the blend is blended.

In this embodiment, the preparation method of the modified polyester fiber comprises the following steps: adding polyester fibers into 1.1g/L JFC penetrant, and then adding 10g/L sodium hydroxide solution, wherein the bath ratio is 1:11, raising the temperature to 120 ℃, keeping the temperature for 45min, then discharging waste liquid, adding water for cleaning for 15min, raising the temperature to 70 ℃, then adding 1.5g/L of terylene oligomer detergent for cleaning for 25min, cleaning for 15min with water, and then dehydrating and drying to obtain the modified terylene fiber.

A production method of the knitted fabric easy to color comprises the following steps:

A. processing blended yarns: processing the viscose fiber and the UHMWPE fiber into blended yarn through a spinning process;

B. pretreatment of blended yarn: b, performing dipping, padding and pre-setting treatment on the blended yarn obtained in the step A by using a finishing agent;

C. weaving the fabric: weaving the modified polyester fiber, the natural cotton fiber and the blended yarn into grey cloth of the knitted fabric by using a circular knitting machine according to the formula amount;

D. dip dyeing treatment of the knitted fabric: c, dyeing the grey cloth of the knitted fabric obtained in the step C;

E. finishing and processing the knitted fabric: and D, sanding, shearing and high-temperature setting and finishing the knitted fabric dyed in the step D to obtain the knitted fabric.

In the embodiment, the finishing agent of the step B is Queenlight CL-7S, and the concentration of the finishing agent is 40 g/L.

In this embodiment, the dyeing in step D adopts a one-bath dyeing process, and the dyeing process in the one-bath process includes the following steps:

the method comprises the following steps: adding reactive dye and disperse dye into a dye bath, raising the temperature to 40 ℃, adding acetic acid/sodium acetate buffer solution to adjust the pH value to be within 5, adding 2g/L dyeing auxiliary agent, raising the temperature to 130 ℃, and keeping the temperature for 40min to dye the modified polyester fibers and the blended yarns;

step two: reducing the temperature to 70 ℃, adding 55g/L of anhydrous sodium sulphate and 5g/L of fixation alkali, and keeping the temperature for 40min to dye the natural cotton fiber;

step three: and (3) draining the dye liquor in the second step, adding water, keeping the temperature to 40 ℃, adding 7g/L soaping agent, raising the temperature to 100 ℃, keeping the temperature for 20min, draining the soaping waste liquor, and finally adding water for washing and drying.

In this embodiment, the reactive dye is a divinyl sulfone type reactive dye, specifically, a reactive red RHS dye.

In this embodiment, the dyeing assistant includes a dispersion leveling agent, an oil removal agent, and a chelating agent, and the mass concentration ratio of the dispersion leveling agent, the oil removal agent, and the chelating agent is 1:4: 1.

In this embodiment, the soaping agent is polyester soaping agent WWRC.

In this embodiment, in the one-bath dyeing process, the bath ratio is 1: 11.

Example 3

The knitted fabric easy to color comprises the following raw materials in percentage by mass: 60% of natural cotton fiber, 30% of modified polyester fiber and 10% of blended yarn.

In the embodiment, the blended yarn is prepared by mixing viscose fibers and UHMWPE fibers in a blending ratio of 70% by weight: 30 percent of the blend is blended.

In this embodiment, the preparation method of the modified polyester fiber comprises the following steps: adding polyester fibers into 1.2g/L JFC penetrant, and then adding 10g/L sodium hydroxide solution, wherein the bath ratio is 1: and 12, raising the temperature to 130 ℃, keeping the temperature for 30min, then discharging waste liquid, adding water for cleaning for 20min, raising the temperature to 70 ℃, then adding a 2g/L terylene oligomer detergent for cleaning for 30min, cleaning for 20min with water, and then dehydrating and drying to obtain the modified terylene fiber.

A production method of the knitted fabric easy to color comprises the following steps:

A. processing blended yarns: processing the viscose fiber and the UHMWPE fiber into blended yarn through a spinning process;

B. pretreatment of blended yarn: b, performing dipping, padding and pre-setting treatment on the blended yarn obtained in the step A by using a finishing agent;

C. weaving the fabric: weaving the modified polyester fiber, the natural cotton fiber and the blended yarn into grey cloth of the knitted fabric by using a circular knitting machine according to the formula amount;

D. dip dyeing treatment of the knitted fabric: c, dyeing the grey cloth of the knitted fabric obtained in the step C;

E. finishing and processing the knitted fabric: and D, sanding, shearing and high-temperature setting and finishing the knitted fabric dyed in the step D to obtain the knitted fabric.

In this example, the finishing agent of step B is SANITEX COOL-Z, and the concentration of the finishing agent is 40 g/L.

In this embodiment, the dyeing in step D adopts a one-bath dyeing process, and the dyeing process in the one-bath process includes the following steps:

the method comprises the following steps: adding reactive dye and disperse dye into a dye bath, raising the temperature to 40 ℃, adding acetic acid/sodium acetate buffer solution to adjust the pH value to be within 5.5, adding 3g/L dyeing auxiliary agent, raising the temperature to 135 ℃, and keeping the temperature for 30min to dye the modified polyester fibers and the blended yarns;

step two: reducing the temperature to 80 ℃, adding 60g/L anhydrous sodium sulphate and 6g/L fixation alkali, and keeping the temperature for 30min to dye the natural cotton fiber;

step three: and (3) draining the dye liquor in the second step, adding water, keeping the temperature to 40 ℃, adding 8g/L soaping agent, raising the temperature to 100 ℃, keeping the temperature for 15min, draining the soaping waste liquor, and finally adding water for washing and drying.

In this embodiment, the reactive dye is a divinyl sulfone type reactive dye or a hetero-di-reactive group reactive dye.

In this embodiment, the dyeing assistant includes a dispersion leveling agent, an oil removal agent, and a chelating agent, and the mass concentration ratio of the dispersion leveling agent, the oil removal agent, and the chelating agent is 1:4: 1.

In this embodiment, the soaping agent is polyester soaping agent WWRC.

In this embodiment, in the one-bath dyeing process, the bath ratio is 1: 12.

Comparative example 1

Comparative example 1 differs from example 2 in that:

comparative example 1 polyester fiber was used instead of modified polyester fiber.

Comparative example 2

Comparative example 2 differs from example 2 in that:

comparative example 2 the blended yarn used was not subjected to step B: and (4) pretreatment of the blended yarn.

Comparative example 3

Comparative example 3 differs from example 2 in that:

comparative example 3 fumaric acid/acrylic acid soaping agent MJ-01 was used instead of polyester soaping agent WWRC.

The knitted fabrics prepared in the above examples 1 to 3 and comparative examples 1 to 3 are subjected to a color fastness to water, a rubbing fastness test, a fabric hand feeling and a contact cool feeling test, wherein the color fastness to water is measured by GB/T5713-1997 standard, and the rubbing fastness test is measured by GB/T3920-2008 standard; selecting 10 volunteers to carry out manual judgment on the hand feeling and the contact cool feeling of the fabric, wherein the 1-10 points represent that the fabric is soft and comfortable and has strong contact cool feeling; the test results of examples 1 to 3 and comparative examples 1 to 3 are shown in table 1 below.

TABLE 1 tables of Performance test data for examples 1-3 and comparative examples 1-3

As can be seen from the comparison of the data tables, the knitted fabrics of examples 1-3 all showed good fabric hand feeling, were soft and glutinous, and had cool touch, and the knitted fabrics had good water fastness and rubbing fastness after one-time bath dyeing process. Compared with the performance data of the comparative example 1 and the example 2, the addition of the modified polyester fiber enables the knitted fabric to be more easily colored, and the dyed knitted fabric has high water fastness and good rubbing fastness; for comparative example 2, step B, pretreatment of blended yarn: the operations of dipping, padding and presetting by adopting the finishing agent can obviously enhance the cool contact feeling of the knitted fabric, so that the knitted fabric is comfortable, dry, breathable and cool to wear; from the comparison result of the comparative example 3 and the example 2, the polyester soaping agent has a large influence on the final dyeing and color fixing effects of the one-time bath dyeing process of the knitted fabric, and the polyester soaping agent selected by the invention can effectively remove loose colors, so that the color fastness of the knitted fabric is maintained in a better state.

The above specific examples are further illustrative of the technical solutions and advantages of the present invention, and are not intended to limit the embodiments. It will be apparent to those skilled in the art that any obvious alternative is within the scope of the invention without departing from the inventive concept.