Post-consumption recycled polyester friendly fabric

Abstract

The utility model provides a post-consumption regenerated polyester friendly fabric, which is woven by a double-sided machine, adopts a weaving structure with two needle passages of an upper needle dial and two needle passages of a lower needle cylinder, and comprises two paths of yarns which are circularly arranged; the two paths of yarns are different specifications of post-consumption regenerated polyester fibers, and the first path is formed by weaving the post-consumption regenerated polyester fibers of the first specification into the inner layer of the fabric; the second path adopts an outer layer of the fabric woven by the post-consumption regenerated polyester fibers of a second specification; the weave structure of the fabric adopts any one or more weave structures of cotton wool and napping double-sided cloth; according to the post-consumption regenerated polyester friendly fabric, the structural arrangement of the prepared fabric can be effectively simplified, the preparation efficiency of the fabric is improved, the preparation cost of the fabric is reduced, the preparation quality of the fabric is improved, and the comfort level of the fabric is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of textile technology, and more particularly to a kind of post-consumer recycled polyester friendly fabric. BACKGROUND

[0002] With the rapid development of the times, people's consumption level is continuously improved, and various types of clothing fabrics are emerging like mushrooms after rain. There are many unsold clothing fabrics on the market at present, and the ability of consumers to update and iterate is improving, and more and more discarded clothing is discarded. Recycling of these unsold and discarded clothing is one of the problems to be solved. At present, there are many methods for recycling discarded clothing, and most of them are usually prepared into new multifunctional fabrics. However, the preparation process of the existing multifunctional fabric is relatively complicated, and the structure of the fabric is relatively complex, so the fabric preparation cost is relatively high, and the preparation efficiency is relatively low. Therefore, it is of great significance to study how to improve the preparation efficiency of the fabric and reduce the preparation cost of the fabric.

[0003] In patent CN115717295B, a preparation method of graphene underwear fabric for warmth, antibiosis and far infrared heating is disclosed, which is composed of graphene honeycomb layer, hollow thermal insulation layer and encryption temperature locking layer. The preparation method adopted is A1: using graphene polyester fiber, spandex and modal synthetic fiber; A2: knitting equipment and structure: three-layer knitting is carried out on double-sided circular knitting machine using triangle and needle arrangement; A3: dyeing and finishing and post-finishing: A4: according to the required width and square meter gram weight, graphene underwear fabric for warmth, antibiosis and far infrared heating is prepared. Through the arrangement of the multi-layer structure, the fabric can have the characteristics of warmth, ventilation and comfort. However, due to the complex structure of the fabric and the complicated arrangement of the knitting needle, the cost of preparing this kind of fabric is high, and the preparation time is long.

[0004] In patent CN114230858B, a marine recycled fabric and its preparation method are disclosed, which includes the following steps: (1) material pretreatment; (2) melting feeding; (3) alcoholysis; (4) preparation of regenerated polyester by re-polymerization; (5) spinning; (6) the obtained pre-spun semi-finished yarn is drawn by a yarn guide machine, and after being drawn by the drawing machine; it is drawn through the lapping machine and the crimping machine, and then it is preheated in the small steam box at 75-85°C, and then it is mechanically crimped, and finally it is cut into short fibers that meet the requirements. The short fibers are sent to a relaxation heat setting machine for drying and setting, and finally they are packed into the warehouse by a packing machine. The color selection is carried out multiple times, so that the color rate of the yarn is high and the fiber is more soft, but the melting feeding and alcoholysis are still needed in the preparation process, so the complexity of the preparation process is still increased. UTILITY MODEL CONTENT

[0005] Therefore, the utility model discloses a kind of post-consumer recycled polyester friendly fabrics to solve the problems of the fabric prepared by waste clothing recycling in prior art, with the fabric structure is more complex, the preparation efficiency of fabric is lower, and the preparation cost is higher;To achieve the structure of fabric can be effectively simplified, improve the preparation efficiency of fabric, reduce the preparation cost of fabric, improve the preparation quality of fabric, enhance the comfort of fabric.

[0006] To achieve the above object, the technical scheme of the utility model is as follows:

[0007] The utility model relates to a kind of post-consumer recycled polyester friendly fabrics are woven by double-sided machine, fabric adopts the weaving structure of two needle ways of upper needle disc and two needle ways of lower needle cylinder, fabric includes 2 yarns of circulation arrangement;2 yarns are different specifications of post-consumer recycled polyester fiber, wherein, the first route is woven into the inner layer of fabric by the first specification of post-consumer recycled polyester fiber;The second route is woven into the outer layer of fabric by the second specification of post-consumer recycled polyester fiber.

[0008] Further, post-consumer recycled polyester fiber is DTY post-consumer recycled polyester.

[0009] Further, 2 yarns are minimum circulation weaving structure.

[0010] Further, the first specification is 75D / 72F.

[0011] Further, the second specification is 50D / 24F.

[0012] Further, the weight percentage of pre-consumer recycled polyester and post-consumer recycled polyester in the yarns in the inner layer of fabric is a% and b% respectively.

[0013] Further, a%+b%=1.

[0014] Further, the weave structure of fabric adopts any one or more weave structures in cotton wool, pulled wool double cloth.

[0015] Further, the needle arrangement of upper needle disc and lower needle cylinder of double-sided machine is set in the form of low-high heel needle staggered circulation arrangement.

[0016] Further, the weaving structure of 2 yarns is arranged in the order of upper needle disc to lower needle cylinder: the first route is upper needle float, upper needle loop, lower needle loop and lower needle float in sequence;The second route is upper needle loop, upper needle float, lower needle float and lower needle loop in sequence.

[0017] Compared with the prior art, the post-consumer recycled polyester friendly fabric has the following advantages:

[0018] Through the arrangement of the fabric structure, the structure arrangement of the prepared fabric can be effectively simplified, the preparation method of the fabric is optimized, the preparation efficiency of the fabric is improved, the preparation cost of the fabric is reduced, the preparation quality of the fabric is improved, and the comfort of the fabric is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments of the present application illustrated in the drawings are presented by way of example or for purpose of illustration, and not as limitations of the present application. In the drawings:

[0020] Figure 1 It is a triangular arrangement in the preparation of fabric;

[0021] Figure 2 It is a needle arrangement in the preparation of fabric;

[0022] Figure 3 It is a dyeing process curve diagram. DETAILED DESCRIPTION

[0023] The utility model concepts of the present disclosure will be described using terminology commonly used by those skilled in the art to convey the substance of their work to others skilled in the art. However, these utility model concepts can be embodied in many different forms, and therefore should not be considered limited to the embodiments described herein.

[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0025] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0026] The present embodiment is for textile fabric, which is the same as conventional textile fabric, and the overall structure is composed of thread and textile machine.

[0027] In the prior art, there are many unsold fabric garments on the market, and the ability of consumers to update and iterate is improving, and more and more discarded garments are discarded. There are many methods for recycling and utilizing discarded garments, and most of them are prepared into new multifunctional fabrics. However, the preparation process of the existing multifunctional fabric is relatively complicated, and the structure of the fabric is relatively complex, so that the fabric preparation cost is relatively high, and the preparation efficiency is relatively low.

[0028] In order to solve the problems of the fabric prepared by recycling waste clothes in the prior art, such as complex fabric structure, low fabric preparation efficiency, and high preparation cost, the embodiment proposes a post-consumer regenerated polyester-friendly fabric woven by a double-face machine, the fabric adopts a weaving structure of two needle tracks on the upper needle disc and two needle tracks on the lower needle cylinder, and the fabric includes two paths of yarns arranged in cycles. The two paths of yarns are post-consumer regenerated polyester fibers of different specifications, wherein the first path of yarns is woven into the inner layer of the fabric by using post-consumer regenerated polyester fibers of a first specification; the second path is woven into the outer layer of the fabric by using post-consumer regenerated polyester fibers of a second specification; and the fabric structure adopts any one or more of the structures of cotton wool, pulled wool, and double-faced cloth. The post-consumer regenerated polyester fibers are DTY post-consumer regenerated polyester.

[0029] By setting the weaving structure of the fabric, the structure of the fabric can be simplified, the preparation efficiency of the fabric can be improved, the wear resistance of the fabric can be enhanced, the low-cost preparation of the fabric can be ensured, the quality of the fabric can be improved, the fabric developed and prepared by independent innovation can adapt to environmental trends and cater to market consumption, and material recycling can be realized as much as possible, thereby reducing resource consumption. In combination with the current consumption situation, the market of the environmentally friendly post-consumer regenerated polyester-friendly fabric can be broadened.

[0030] Specifically, the first path of yarns is woven into the inner layer of the fabric by using DTY post-consumer regenerated polyester of a first specification, and the second path is woven into the outer layer of the fabric by using DTY post-consumer regenerated polyester of a second specification. In the embodiment, the two paths of yarns are the smallest circular weaving structure. The first specification is 75D / 72F, and the second specification is 50D / 24F. In addition, the weight percentages of the pre-consumer regenerated polyester and the post-consumer regenerated polyester in the yarns in the inner layer of the fabric are a% and b%, respectively, and a%+b%=1. The weight percentages of the pre-consumer regenerated polyester and the post-consumer regenerated polyester in the yarns in the outer layer of the fabric are c% and d%, respectively, and c%+d%=1. The values of a, b, c, and d are set according to requirements. Preferably, one yarn of the first specification of 75D / 72F, the percentage of the pre-consumer regenerated polyester yarn in the total regenerated polyester weight is a%, a%=70%, and the percentage of the post-consumer regenerated polyester yarn in the total regenerated polyester weight is b%, b%=30%.

[0031] By setting DTY post-consumer regenerated polyester of different specifications, the comfort, softness, and skin-friendly properties of the fabric can be ensured, the recycling of waste clothes can be greatly improved, resource waste can be reduced, and the protection of the environment can be improved.

[0032] In addition, the upper needle disc and the lower needle cylinder of the double-sided machine are arranged in the form of low-high butt needle staggered circulation, that is, in the form of 1 low butt needle 1 high butt needle staggered circulation, as shown in the form of 2 rows x 4 columns of needle arrangement; the weaving structure of 2 yarns is in the order of the arrangement of the upper needle disc to the lower needle cylinder: the first path is in turn the upper needle float, the upper needle loop, the lower needle loop, and the lower needle float; the second path is in turn the upper needle loop, the upper needle float, the lower needle float, and the lower needle loop; in this embodiment, the upper needle loop is indicated by "∨" in the triangular arrangement diagram, the float is indicated by "— " in the triangular arrangement diagram, wherein, when "— " is located in the upper needle disc, it is called upper needle float, when "— " is located in the lower needle cylinder, it is called lower needle float, the lower needle loop is indicated by "∧" in the triangular arrangement diagram, the odd-numbered weaving path feeds the inner layer (i.e. the inner layer of the fabric) yarn, the even-numbered weaving path feeds the outer layer (i.e. the outer layer of the fabric) yarn, in addition, in this embodiment, as shown in Figure 2 the 1-2 in the bottom row of the column in the figure refers to the 1-2 yarn weaving.

[0033] By arranging the needles in the form of low-high butt needle staggered circulation, the efficiency of fabric weaving can be effectively improved, the batch production of fabric can be ensured, and the rapid and stable preparation of fabric can be realized. It can also effectively simplify the structure of needle arrangement, improve the running efficiency of needle, and improve the production rate of fabric. Through the cooperation of the inner and outer layers of the fabric, it is beneficial to improve the air permeability of the friendly fabric, improve the appearance and comfort of the fabric, and also help to ensure the flatness of the fabric.

[0034] A preparation method of a post-consumer recycled polyester friendly fabric, the method is used for preparing the post-consumer recycled polyester friendly fabric, and the method comprises the following steps:

[0035] Step one, selection of raw materials: according to the fabric structure required to be prepared, different specifications of post-consumer recycled polyester fibers are selected, the post-consumer recycled polyester fibers are DTY post-consumer recycled polyester;

[0036] Step two, setting of fabric structure: different specifications of post-consumer recycled polyester fibers, i.e. DTY post-consumer recycled polyester, are woven into the required fabric by a textile equipment;

[0037] Step three, dyeing and finishing: cooperate with imported equipment to perform dyeing and finishing treatment on the fabric;

[0038] Step four, post-setting: adopt a required post-dyeing setting formula to perform post-setting treatment on the fabric, and a required friendly fabric is obtained.

[0039] Through the setting of the method, the preparation method of the fabric can be effectively optimized, the preparation efficiency of the fabric can be improved, the preparation cost of the fabric can be reduced, and the preparation quality of the fabric can be improved.

[0040] Step two comprises:

[0041] Step S21: setting of fabric structure: analyzing the prepared fabric structure, and setting a double-sided structure;

[0042] Step S22: selecting a knitting device, combining the special performance of the yarn, and selecting the matching mode of the yarn according to the gauge of the knitting device, and knitting the DTY of different specifications into the required fabric through the textile device.

[0043] In step S22, the gauge of the knitting device is 28-32 needles / cm; the lower needle cylinder diameter of the knitting device is any one of 30" and 34". The speed of the knitting device is 20-22 r / min. The loop length of the knitting device is in the range of 11 mm-13 mm, which is calculated per 50 loops. The fabric blank prepared has a weight in the range of 120 g-140 g. In this embodiment, the specific yarn thickness and the change of the loop, and the change of the fabric structure are set according to the requirements.

[0044] Through the analysis of the fabric structure, the fabric can be knitted on demand, which can effectively realize the rapid preparation of the fabric, facilitate the control of the knitting speed of the fabric, reduce the occurrence of errors in the knitting process, improve the quality of the fabric, and make the fabric have a comfortable, soft and skin-friendly texture.

[0045] Step three includes:

[0046] Step S31: dyeing: according to the preset temperature rising rate, immersing the fabric in a dye bath with a preset pH value, adding dyeing aids to the dye bath, and performing at least one dyeing treatment on the fabric;

[0047] Step S32: cutting and arranging: after reducing and cleaning the dyed fabric, cutting and arranging the fabric according to the size of the required fabric;

[0048] Step S33: drying: drying the fabric by using an imported drying machine;

[0049] Step S34: opening and setting: opening the dried fabric, and using a required environmentally friendly finishing formula to set the fabric, to obtain a required friendly fabric.

[0050] In step S31, after each dyeing treatment, the temperature rising rate and the pH value of the dye bath can be adjusted in real time according to the color state of the fabric, to ensure the stability and reliability of the fabric dyeing. In addition, a small amount of dyeing aids is added to the dye bath in batches during the dyeing process, so as to prevent uneven dyeing. In addition, since the fabric in this application is a polyester knitted fabric, the dyeing process used in step S31 is a one-bath process. The curve diagram of this process is as followsFigure 3 The specific process formula is as follows: 2% of disperse dye, 0.3 g / L of glacial acetic acid, 0.25 g / L of levelling agent, and 0.3 g / L of sodium acetate. During the dyeing process, the temperature of the dye bath is 120 DEG C+ / - T0, T0 is a preset temperature deviation value, T0 is a positive number; the specific value of T0 is set according to requirements. The bath ratio between the dyed fabric and the dye bath is 1:10.

[0051] By monitoring the temperature rising rate in real time during dyeing and flexibly setting the temperature rising rate, the improper temperature rising rate can be effectively avoided to affect the color of the finished product, and problems such as color mottle and uneven dyeing can be avoided. In addition, by controlling the PH value of the dye bath, the stability of fabric dyeing can be improved, the dye bath can be ensured to reach the best dyeing condition, and the dyeing efficiency of the fabric can be improved. By adding a small amount of dyeing auxiliaries in batches, the problem of uneven dyeing can be prevented. After dyeing, the fabric is washed, especially, the fabric dyed by disperse dye needs to be washed by reduction, which can effectively remove the floating color on the fabric and avoid the decrease of the rubbing fastness of the finished fabric caused by the floating color. Therefore, the quality of the fabric can be greatly improved. In addition, by setting the imported equipment in the dyeing and finishing process, it can be ensured that the fiber is not further damaged in the dyeing and finishing process, and the fabric physical property is improved. By setting the post-environmental finishing formula, the impurities in the fabric can be effectively removed, and the fabric surface quality can be improved.

[0052] In step S32, the chemical reagents used in the reduction washing formula are caustic soda and sodium hydrosulfite. The amount of caustic soda is 2.0 g / L; the amount of sodium hydrosulfite is in the range of 2 g / L-3 g / L.

[0053] By setting the reduction washing formula, the problem of low color fastness caused by the low hydrophilicity of polyester fiber dyed by disperse dye and the floating color on the surface of the fabric can be effectively avoided, the dyeing fastness can be improved, and the stability of dyeing can be improved. In addition, the reduction washing is performed after the dyeing of polyester, especially after the dyeing of dark color, so as to better improve the dyeing fastness.

[0054] In the utility model, for any textile fabric, it can include the one kind of post-consumer regenerated polyester friendly fabric structure in the embodiment, and on the basis of the related structure and assembly relationship of different specifications of regenerated polyester and double-sided brushed cloth provided in the embodiment, the textile fabric further includes conventional components such as thread and textile machine structure;Since they are prior art, no further description is made here.

[0055] The above only describes preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A post-consumer recycled polyester friendly fabric, characterized in that, The fabric is knitted by a double-face machine, the fabric adopts a knitting structure of two needle tracks of the upper needle disc and two needle tracks of the lower needle cylinder, and the fabric comprises two paths of yarns arranged in cycles; the two paths of yarns are different specifications of post-consumer recycled polyester fibers, wherein the first path adopts post-consumer recycled polyester fibers of a first specification to form an inner layer of the fabric; and the second path adopts post-consumer recycled polyester fibers of a second specification to form an outer layer of the fabric.

2. A post-consumer recycled polyester friendly fabric as claimed in claim 1, wherein, The post-consumer recycled polyester fibers are DTY post-consumer recycled polyester.

3. A post-consumer recycled polyester friendly fabric as claimed in claim 1, wherein, The two paths of yarns are a minimum cycle knitting structure.

4. A post-consumer recycled polyester friendly fabric as claimed in claim 1, wherein, The first specification is 75D / 72F.

5. A post-consumer recycled polyester friendly fabric as claimed in claim 1, wherein, The second specification is 50D / 24F.

6. A post-consumer recycled polyester friendly fabric as claimed in claim 1, wherein, The fabric adopts any one or more of the following weave structures: cotton wool and pulled wool double cloth.

7. A post-consumer recycled polyester friendly fabric as claimed in claim 1, wherein, The needle arrangement of the upper needle disc and the lower needle cylinder of the double-face machine is arranged in the form of low-high butt needle staggered cycle arrangement.

8. A post-consumer recycled polyester friendly fabric as claimed in claim 7, wherein, The knitting structure of the two paths of yarns is arranged in the order of the upper needle disc to the lower needle cylinder as follows: the first path is in turn upper needle float, upper needle loop, lower needle loop and lower needle float; and the second path is in turn upper needle loop, upper needle float, lower needle float and lower needle loop.

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