Cool breathable fabric and preparation method thereof

Abstract

The invention provides a cool breathable fabric and a preparation method thereof. The fabric is woven by a circular knitting machine; the fabric is of a weaving structure with two needle passages of an upper needle dial and two needle passages of a lower needle cylinder, the fabric comprises two paths of circulating yarns, and the two paths of yarns are blended yarns formed by cellulose yarns and polyester yarns; wherein the first path adopts the concave parts of the fabric woven by the blended yarns, and the second path adopts the convex parts of the fabric woven by the blended yarns; according to the cool breathable fabric and the preparation method thereof, the arrangement of the fabric structure can be optimized, the compactness of the fabric structure can be reduced, the comfort and elasticity of the fabric can be improved, the breathability of the fabric can be enhanced, the heat shielding effect of the fabric can be improved, the skin feeling experience of a user can be guaranteed, and the use satisfaction of the user can be improved; the preparation method of the fabric is simplified, the preparation cost of the fabric is reduced, and the quality of the prepared fabric is improved.

Description

Technical Field

[0001] The invention relates to the technical field of knitting, and in particular to a cool and breathable fabric and a preparation method thereof. Background Art

[0002] Currently, most T-shirt fabrics on the market are made of pure cotton or pure chemical fiber, and the fabrics are relatively monotonous. Although these fabrics can block heat, the cool feeling and elasticity of the fabrics that the skin can feel are poor. Especially in outdoor or sports life scenes, it is easy to give consumers unpleasant experiences such as tightness and irritability. Therefore, it is of great significance to study how to enhance the comfort performance of fabrics and improve the cool feeling of fabrics on the skin while improving the heat-blocking performance of fabrics.

[0003] In patent CN106592039B, a modified polyester fiber and regenerated cellulose fiber fabric and preparation method are proposed, the fabric contains modified polyester fiber and regenerated cellulose fiber, the modified polyester fiber is spun by blending 90-99wt% of copolyester and 1-10wt% of crystallization accelerator, the copolyester contains aliphatic diols with side chains and carbon atoms not greater than 8, through the setting of the fabric, it can be dyed below 100°C at normal pressure, and has the characteristics of soft hand feel, low carbon and environmental protection, but because the cross-sectional structure of the fabric is tight, it is easy to affect its air permeability. In addition, its preparation method requires first mixing the copolyester and the crystallization accelerator into a blend, then melting to obtain a spinning line, and adjusting it through a drafting and winding process, and processing to obtain a fabric, which can overcome the damage of high-temperature dyeing to the fabric, but its preparation method is relatively complicated and easily increases the preparation cost of the fabric.

[0004] Patent CN103556376B discloses a high-end imitation PU leather knitted fabric and its preparation method. The fabric is composed of a blended yarn of polyester fiber and cotton or a blended yarn of polyester fiber and regenerated cellulose fiber, and its structure is a weft knitted plain needle structure or a double rib structure; its preparation method comprises: (1) weaving the blended yarn of polyester fiber and cotton or the blended yarn of polyester fiber and regenerated cellulose fiber with a double rib or weft plain needle structure to obtain a blank; (2) slitting and curling the blank and then dyeing and finishing it to finally obtain a high-end imitation PU leather knitted fabric. It can improve the fabric effect and enhance the color, but due to the selection of the yarn material and the coordination of the preparation method, the fabric structure prepared by it is still relatively tight, which is also easy to affect the air permeability of the fabric. Summary of the invention

[0005] In view of this, the present invention aims to propose a cool and breathable fabric and a preparation method thereof, so as to solve the problems existing in the prior art on the one hand: the T-shirt fabrics on the market are monotonous in material, the heat-shielding effect is weak, resulting in a poor skin feel, and the structure of the fabric is relatively tight, resulting in poor comfort and air permeability; and on the other hand: the problem that the existing fabric preparation method is relatively complicated; thereby optimizing the setting of the fabric structure, reducing the tightness of the fabric structure, improving the comfort and elasticity of the fabric, enhancing the air permeability of the fabric, improving the heat-shielding effect of the fabric, ensuring the user's skin feel experience, and improving the user's satisfaction; and simplifying the fabric preparation method, reducing the fabric preparation cost, and improving the quality of the prepared fabric.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] The present invention relates to a cool and breathable fabric and a preparation method thereof. The cool and breathable fabric is knitted using a circular knitting machine; the fabric adopts a knitting structure with two needle tracks of an upper needle disc and two needle tracks of a lower needle cylinder, and the fabric comprises two circulating yarns, both of which are blended yarns composed of cellulose yarn and polyester yarn; wherein the first yarn is knitted with the blended yarn to form a concave portion of the fabric, and the second yarn is knitted with the blended yarn to form a convex portion of the fabric.

[0008] Furthermore, the fabric structure is a single-sided plain jersey structure.

[0009] Furthermore, the 2-way yarn is a minimum repeating braided structure.

[0010] Furthermore, the cellulose yarn in the blended yarn is a short cellulose yarn, and the count of the cellulose yarn is set in the range of 40S-60S.

[0011] Furthermore, the polyester yarn in the blended yarn is a biological material polyester long yarn; the denier of the biological material polyester long yarn is set in the range of 50D-100D.

[0012] Further, the blended yarn has a core-layer cross-sectional structure.

[0013] Furthermore, the weight percentage of the cellulose yarn in the blended yarn is recorded as m%, and the weight percentage of the polyester yarn in the blended yarn is recorded as n%, |m%-n%|≤c%, and c is a positive number.

[0014] Furthermore, the two routes of yarn pass through the knitting structure of the circular knitting machine in the following order from the upper needle disc to the lower needle cylinder: the first route is upper needle circle formation, upper needle circle formation, lower needle tuck circle formation, and lower needle floating thread; the second route is upper needle floating thread, upper needle tuck circle formation, lower needle circle formation, and lower needle circle formation.

[0015] Furthermore, the cool and breathable fabric is a cotton-polyester knitted fabric.

[0016] A method for preparing a cool breathable fabric, the method is used to prepare the cool breathable fabric, the method comprises the following steps:

[0017] Step 1: Preparation of blended yarn: Select raw materials and prepare blended yarn;

[0018] Step 2: Preparation of fabric blanks: adjusting the parameters of the circular knitting machine to weave the blended yarn to obtain the fabric blanks;

[0019] Step 3: Dyeing and finishing: The fabric blank is dyed and finished by adopting a two-bath process to obtain the desired breathable fabric.

[0020] Compared with the prior art, the cool and breathable fabric and the preparation method thereof described in the present invention have the following beneficial effects:

[0021] By setting the fabric, the fabric structure can be optimized, the tightness of the fabric structure can be reduced, the elasticity of the fabric can be improved, the breathability of the fabric can be enhanced, the heat shielding effect of the fabric can be improved, the user's skin feel experience can be guaranteed, and the user's satisfaction can be improved. In addition, by setting the fabric preparation method, the process complexity of fabric preparation can be effectively simplified, the fabric preparation efficiency can be improved, and the fabric preparation cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention. In the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of the triangle arrangement of fabric weaving;

[0024] Figure 2 It is a schematic diagram of the dyeing process curve;

[0025] Figure 3 This is a schematic diagram of the actual fabric;

[0026] Figure 4 Schematic diagram of the flow chart of fabric preparation. DETAILED DESCRIPTION

[0027] The inventive concepts of the present disclosure will be described below using terms commonly used by those skilled in the art to convey the essence of their work to other persons skilled in the art. However, these inventive concepts can be embodied in many different forms and should not be considered limited to the embodiments described herein.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0030] This embodiment is directed to knitted fabrics, and similar to conventional knitted fabrics, the overall structure is composed of yarn and dyeing and finishing auxiliaries.

[0031] In order to solve the problems existing in the prior art, on the one hand, the T-shirt fabrics on the market are monotonous, the heat shielding effect is weak, resulting in poor skin feel, and the structure of the fabric is relatively tight, resulting in poor elasticity and breathability, and on the other hand, the problem that the existing fabric preparation method is relatively complicated; this embodiment proposes a cool breathable fabric and a preparation method thereof, wherein the cool breathable fabric is woven by a circular machine. The fabric adopts a weaving structure with two needle tracks on the upper needle disk and two needle tracks on the lower needle cylinder, and the fabric includes two loops of yarn, and both of the two loops of yarn are blended yarns composed of cellulose yarn and polyester yarn. Among them, the first loop is woven with blended yarn to form the concave part of the fabric, and the second loop is woven with blended yarn to form the convex part of the fabric. Among them, the fabric structure is a single-sided plain needle sweat cloth structure. In this embodiment, the two-way yarn is a minimum loop weaving structure.

[0032] Through the setting of the fabric, the setting of the fabric structure can be optimized, the tightness of the fabric structure can be reduced, the elasticity of the fabric can be improved, the breathability of the fabric can be enhanced, the heat-shielding effect of the fabric can be improved, the user's skin feel experience can be guaranteed, and the user's satisfaction can be improved.

[0033] Among them, the cellulose yarn in the blended yarn is a short cellulose yarn, and the count of the cellulose yarn is set in the range of 40S-60S. The cellulose yarn is wear-resistant, soft and skin-friendly. The polyester yarn in the blended yarn is a bio-material polyester long yarn; the denier of the bio-material polyester long yarn is set in the range of 50D-100D. Polyester yarn has excellent heat-shielding, contact coolness and elasticity. The blended yarn has a core layer cross-sectional structure, which can accommodate more still air and enhance the heat-shielding effect of the fabric. In addition, the weight percentage of cellulose yarn in the blended yarn is recorded as m%, and the weight percentage of polyester yarn in the blended yarn is recorded as n%, |m%-n%|≤c%, c is a positive number, and the specific value of c is set according to the requirements.

[0034] Different from the existing T-shirt fabrics that use pure cotton or pure chemical fiber components, which results in poor elasticity of the fabrics, this application has upgraded and iterated the comfort performance of the fabrics, the functional performance of the fabrics and the environmental performance of the fabrics on the basis of conventional T-shirt fabrics. On the one hand, biomass-derived yarn raw materials are selected as raw materials, which are more environmentally friendly and reduce dependence on petroleum materials. On the other hand, the yarn used in this application is composited by two fibers with different shrinkage characteristics, and the yarn is elastic and soft to the touch. The selected yarn has a core layer cross-sectional structure that can accommodate more still air, thereby improving the heat-shielding effect of the fabric. In addition, on the other hand, the chemical fiber selected for the fabric in this application has good cooling properties, and the fabric produced is smooth and skin-friendly, with a cooling function.

[0035] The arrangement order of the 2-way yarn through the knitting structure of the circular knitting machine from the upper needle disc to the lower needle cylinder is: the first route is upper needle looping, upper needle looping, lower needle tucking, and lower needle floating thread; the second route is upper needle floating thread, upper needle tucking, lower needle looping, and lower needle looping. In this embodiment, the looping is as shown by “∧” in the triangle arrangement diagram, where “∧” is located in the upper needle disc, which is called upper needle looping, and “∧” is located in the lower needle cylinder, which is called lower needle looping. The floating thread is as shown by “—” in the triangle arrangement diagram, where “—” is located in the upper needle disc, which is called upper needle floating thread, and “—” is located in the lower needle cylinder, which is called lower needle floating thread. The tuck is arranged in a triangle as shown by "︹" in the figure. When "︹" is located in the upper needle disc, it is called the upper needle tuck, and when "︹" is located in the lower needle cylinder, it is called the lower needle tuck. The odd-numbered weaving paths feed the yarn of the inner layer (i.e., the concave part of the fabric), and the even-numbered weaving paths feed the yarn of the surface layer (i.e., the convex part of the fabric). In addition, in this embodiment, as Figure 1 As shown in the figure, 1-2 in the bottom row of the column numbers refers to 1-2 yarn weave.

[0036] By setting the arrangement of the weaving triangles of the fabric, the weaving of the single-sided plain jersey structure of the fabric can be effectively achieved, and the use of two-way yarn for circular weaving can effectively reduce the weaving difficulty, improve the weaving efficiency, shorten the weaving cycle of the fabric, improve the weaving quality of the fabric, and reduce the weaving cost of the fabric.

[0037] A method for preparing a cool breathable fabric, the method is used to prepare the cool breathable fabric, the method comprises the following steps:

[0038] Step 1: Preparation of blended yarn: Select raw materials and prepare blended yarn;

[0039] Step 2: Preparation of fabric blanks: adjusting the parameters of the circular knitting machine to weave the blended yarn to obtain the fabric blanks;

[0040] Step 3, dyeing and finishing: dyeing and finishing the fabric blank by using a two-bath process to obtain the desired hollow cool breathable fabric. The desired hollow cool breathable fabric is a cotton-polyester knitted fabric.

[0041] By setting up the fabric preparation method, the process complexity of fabric preparation can be effectively simplified, the fabric preparation efficiency can be improved, and the fabric preparation cost can be reduced.

[0042] Among them, step one includes:

[0043] Step S11: selecting cellulose yarn and polyester yarn of required quality and specification respectively;

[0044] Step S12: blending the two selected yarns to obtain blended yarn.

[0045] Step 2 includes:

[0046] Step S21: Select the required circular knitting machine model and adjust the relevant parameters of the circular knitting machine;

[0047] Step S22: knitting the blended yarn by a circular knitting machine to obtain a fabric blank.

[0048] Among them, in step S21, the relevant parameters include any one of the needle pitch and rotation speed of the circular knitting machine.

[0049] By selecting the fabric and the parameters of the circular knitting machine such as the machine model, the weaving of the single-sided plain jersey structure can be effectively realized, and the woven fabric can achieve the best texture by matching the thickness and coil of the cellulose yarn and the polyester yarn. This is conducive to bringing the raw material characteristics of the fabric to the extreme, and can also take into account the applicable scenes of the T-shirt, which is conducive to making the fabric suitable for making T-shirts for summer, autumn outdoor, sports life and other scenes, and improving the applicable scope of the fabric.

[0050] Step three includes:

[0051] Step S31: pre-treatment of the fabric blank by washing;

[0052] Step S32: dyeing the washed fabric blank using a two-bath process;

[0053] Step S33: dehydrating the dyed fabric;

[0054] Step S34: performing opening and shaping processing on the dehydrated fabric to obtain the desired hollow cool breathable fabric.

[0055] By setting up the dyeing and finishing process in step three, in coordination with the selection of raw yarn counts, the setting of knitted fabric structure and the optimization of blank weaving parameters in steps one and two, it is possible to effectively develop environmentally friendly fabrics with heat-shielding and cooling functional properties and a silky, soft and skin-friendly touch, and put them into production on the market.

[0056] Step S32 includes:

[0057] Step S321: preparing dye according to the dyeing formula;

[0058] Step S322: in an acidic environment, the dye is dispersed to form a dispersing and leveling agent, the dispersing and leveling agent is acidic, and the pH value of the dispersing and leveling agent is less than 7; in this embodiment, the pH value of the dispersing and leveling agent is equal to 5.6.

[0059] Step S323: performing a dyeing and washing process at a first preset temperature T1;

[0060] Step S324: performing reduction cleaning on the fabric after one dyeing and washing at the second preset temperature T2;

[0061] Step S325: placing the fabric into an alkaline dye bath solution containing active dyes and salt, and performing secondary dyeing treatment at a third preset temperature T3;

[0062] Step S326: Wash the fabric after the secondary cotton dyeing process to complete the dyeing process of the fabric, and execute step S33.

[0063] Among them, in step S321, the dyeing formula is a polyester and cotton dyeing process formula; the formula includes: disperse yellow 0.02g / l, leveling agent 0.5-1.2g / l, acid 0.2-0.6g / l, bath treasure 0.1-0.2g / l, active yellow 0.02%, alkali 0.3-0.6g / L, dyeing accelerator 0.5g / L-2g / L, soap boiling detergent 0.5-1.5g / L.

[0064] In addition, in step S323, the value of the first preset temperature T1 is 130° C. In step S324, the value range of the second preset temperature T2 is 70° C.-80° C. In step S325, the pH value of the alkaline dye bath solution is in the range of 10-11; the value of the third preset temperature T3 is 80° C.

[0065] By taking into account any one or more comprehensive factors of the most suitable setting temperature, dyeing process, dye with excellent compatibility, dyeing equipment and type of finishing softening auxiliaries for the yarn in the dyeing and finishing process, the present application sets the best dyeing and finishing process flow. The pre-shrinkage treatment of the fabric blank by open-width washing can effectively avoid the problem of dyeing folds on the fabric surface caused by direct dyeing.

[0066] In the present invention, any knitted fabric may include a cool and breathable fabric structure as described in this embodiment, and based on the relevant structure and assembly relationship of the polyester and cellulose yarns provided in this embodiment, the knitted fabric may also include conventional components including yarn, dyeing and finishing auxiliaries and other structures. Since these are all prior art, they will not be described in detail here.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cool and breathable fabric, characterized in that: The fabric is knitted using a circular machine; the fabric adopts a knitting structure with two needle tracks on the upper needle disk and two needle tracks on the lower needle cylinder, and the fabric includes two circulating yarns, both of which are blended yarns composed of cellulose yarn and polyester yarn; among them, the first yarn is woven with blended yarn to form the concave part of the fabric, and the second yarn is woven with blended yarn to form the convex part of the fabric.

2. A cool breathable fabric according to claim 1, characterized in that: The fabric structure is a single-sided plain jersey structure.

3. The cool and breathable fabric according to claim 1, characterized in that: The 2-way yarn is a minimum repeating braided structure.

4. The cool and breathable fabric according to claim 1, characterized in that: The cellulose yarn in the blended yarn is a short cellulose yarn, and the count of the cellulose yarn is set in the range of 40S-60S.

5. The cool and breathable fabric according to claim 1, characterized in that: The polyester yarn in the blended yarn is a biological material polyester long yarn; the denier of the biological material polyester long yarn is set in the range of 50D-100D.

6. The cool and breathable fabric according to claim 1, characterized in that: The blended yarn has a core layer cross-sectional structure.

7. The cool and breathable fabric according to claim 1, characterized in that: The weight percentage of the cellulose yarn in the blended yarn is recorded as m%, the weight percentage of the polyester yarn in the blended yarn is recorded as n%, and |m%-n%|≤c%, where c is a positive number.

8. The cool and breathable fabric according to claim 1, characterized in that: The two routes of yarns pass through the knitting structure of the circular knitting machine in the following order from the upper needle disc to the lower needle cylinder: the first route is upper needle circle formation, upper needle circle formation, lower needle tuck circle formation, and lower needle floating thread; the second route is upper needle floating thread, upper needle tuck circle formation, lower needle circle formation, and lower needle circle formation.

9. The cool and breathable fabric according to claim 1, characterized in that: The cool and breathable fabric is a cotton-polyester knitted fabric.

10. A method for preparing a cool breathable fabric, the method being used to prepare the cool breathable fabric according to any one of claims 1 to 9, the method comprising the following steps: Step 1: Preparation of blended yarn: Select raw materials and prepare blended yarn; Step 2: Preparation of fabric blanks: adjusting the parameters of the circular knitting machine to weave the blended yarn to obtain the fabric blanks; Step 3: Dyeing and finishing: The fabric blank is dyed and finished by adopting a two-bath process to obtain the desired breathable fabric.

Images