Method for manufacturing silk / polyethylene woven fabric

Abstract

To provide a method for producing a silk-polyethylene interwoven fabric which has both moisture absorption and release properties and heat dissipation properties and can be easily imparted with random designs. [Solution] The method for manufacturing silk-polyethylene woven fabric is a method for manufacturing a fabric using raw silk as the warp thread and polyethylene fiber as the weft thread. This method includes a weaving step S3 in which raw silk and polyethylene fiber are woven to form a fabric, a refining and dyeing step S4 in which the fabric obtained in the weaving step S3 is refined and dyed, and a slipping step S5 in which, when the fibers of the fabric obtained in the refining and dyeing step S4 are in a swollen state due to the refining and dyeing step S4, the raw silk forming the warp thread 5 is slipped against the polyethylene fiber forming the weft thread 6 in a direction along the weft thread 6 by a friction element 3.

Description

Technical Field

[0001] The present invention relates to a method for manufacturing a fabric.

Background Art

[0002] In recent years, as a countermeasure against heatstroke in summer, which has become a social problem, there is a demand for a cooling clothing material having moisture absorption and desorption properties and heat dissipation properties. In addition, while attention is paid to environmentally friendly manufacturing, a simple method for imparting designability to a fabric has been studied.

[0003] Regarding the heat dissipation property required for the cooling clothing material, the high contact cold sensitivity and thermal conductivity of ultra-high molecular weight polyethylene fibers have attracted attention (see, for example, Patent Documents 1 and 2). On the other hand, as a method for imparting designability to a fabric, a method of imparting a pattern during weaving using pre-dyed yarns or a method of imparting a pattern by printing after weaving is generally used.

[0004] In addition, a method for obtaining a fabric having a three-dimensional slip pattern is also known (see, for example, Patent Document 3). In the method of Patent Document 3, while strongly stretching the fabric in the weft direction and the warp direction, a convex engraving roll or engraving plate made of metal or resin is set at the lower part of the fabric, and a friction plate made of rubber, metal, or resin is set at the upper part of the fabric and brought into contact with the fabric, and the surface of the fabric is slidably rubbed to partially disturb the arrangement of the woven yarns, thereby forming a slip pattern.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, the ultra-high molecular weight polyethylene fibers of Patent Documents 1 and 2 have the disadvantage that they do not have moisture absorption or water absorption properties as a clothing material. In addition, ultra-high molecular weight polyethylene fibers have self-lubricating properties, and the surface is slippery, causing uneven weave and slippage, making them unsuitable for woven fabrics. For this reason, ultra-high molecular weight polyethylene fibers have not been widely used as a clothing material.

[0007] In addition, in the case of the above-mentioned yarn-dyed textiles, expensive weaving machines such as jacquard looms are required to impart distinctive design patterns. In addition, the above-mentioned piece-dyed textile printing consumes a large amount of water in the processing process, so a new processing process using an inkjet printer has been proposed, but there are issues with the texture and fastness.

[0008] Furthermore, the method of obtaining a woven fabric having a three-dimensional slip pattern in Patent Document 3 involves forming a three-dimensional English letter pattern or the like in the woven fabric, and is therefore not suitable for simply imparting a random design.

[0009] In view of the problems with the conventional technology, the object of the present invention is to provide a method for producing a silk-polyethylene union fabric which has both moisture absorption and release properties and heat dissipation properties and can easily be imparted with random designs. [Means for solving the problem]

[0010] The method for producing a silk-polyethylene woven fabric of the present invention is a method for producing a fabric using raw silk as the warp thread and polyethylene fibers as the weft thread, and is characterized by comprising a weaving step of weaving the raw silk and the polyethylene fibers to form a fabric, a refining and dyeing step of refining and dyeing the fabric obtained by the weaving step, and a slip step of slipping the raw silk forming the warp thread against the polyethylene fibers forming the weft thread of the fabric using a friction element in a direction along the weft thread when the fibers of the fabric obtained by the refining and dyeing step are in a swollen state due to the refining and dyeing step. Effect of the Invention

[0011] According to the present invention, in the fabric in which the fibers are in a swollen state by the slipping process, a high-density portion where the density of the warp threads is large and a low-density portion where the density is small are generated, so that a random pattern in which the high-density portion and the low-density portion are alternately repeated is formed.

[0012] And in the silk / polyethylene interwoven fabric obtained through the slipping process, since the fabric is dried and the swollen state is eliminated, the formed random pattern is maintained and no slipping of the warp threads occurs. Therefore, it is possible to manufacture a silk / polyethylene interwoven fabric having both moisture absorption / release properties and heat exhaust properties while easily imparting a random design.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0014] Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows the manufacturing process included in a method for manufacturing a silk-PE (polyethylene) interwoven fabric according to an embodiment of the present invention.

[0015] As shown in FIG. 1, this method for manufacturing a silk-PE interwoven fabric includes a warp preparation step S1 of preparing warps made of raw silk, a weft preparation step S2 of preparing wefts made of ultra-high molecular weight polyethylene fibers, and a weaving step S3 of weaving the prepared warps and wefts into a fabric. The warp preparation step S1 and the weft preparation step S2 may be carried out in any order.

[0016] This method for manufacturing a silk-PE interwoven fabric further includes a scouring and dyeing step S4 of scouring and dyeing the fabric obtained in the weaving step S3, and a slipping step S5 of slipping the warps (raw silk threads) along the direction of the wefts (threads of polyethylene fibers) with respect to the fabric that has undergone this step S4 to obtain a silk-PE interwoven fabric.

[0017] Table 1 shown in FIG. 2 shows the design conditions of the silk-PE interwoven fabric manufactured by the manufacturing process of FIG. 1. The conditions other than "weft density" and "weft" are the same as those in the case of ordinary double-weave (plain weave).

[0018] In the manufacture of the silk-PE interwoven fabric, according to the design conditions in Table 1, the warp preparation step S1 to the weaving step S3 in FIG. 1 are carried out, and then the scouring and dyeing step S4 and the slipping step S5 are carried out.

[0019] That is, in the warp preparation step S1, raw silk 21 is used as the warp, and according to the design conditions in Table 1 (the same conditions as in the case of ordinary double-weave (plain weave)), the warp is wound onto a bobbin and set on a loom.

[0020] In the weft preparation step S2, ultra-high molecular weight polyethylene is drawn to obtain 50D or 100D PE (polyethylene) processed yarn. Then, the obtained PE processed yarn is twist-combined with a water-soluble vinylon yarn to obtain a composite twisted yarn as the weft.

[0021] In the weaving process S3, the composite twisted yarn prepared in the weft preparation process S2 is inserted into the warp threads prepared in the warp preparation process S1 to perform weaving. The weft density is 19 to 31 threads / cm. In the scouring and dyeing process S4, the fabric obtained through the weaving process S3 is subjected to scouring and dyeing processes.

[0022] By this scouring, sericin and other impurities are removed from the warp threads (raw silk), giving them luster and suppleness, and enabling smooth subsequent dyeing.

[0023] Also, in the scouring and dyeing process S4, the water-soluble vinylon yarn that is twisted together in the weft is dissolved and removed, expanding the gaps between the weft threads. This facilitates the slip treatment of the warp threads in the subsequent slip process S5 and the manifestation of patterns thereby. The fabric that has undergone the scouring and dyeing process S4 is in a wet and hot state, being wet at about 50°C, and the fibers of the fabric are in a swollen state.

[0024] In the slip process S5, for the fabric in this swollen state of the fibers, a friction element with a friction surface formed of TPU (Thermo plastic Polyurethane resin) is slid (moved) in the weft direction on the fabric, causing the warp threads to slip so as to shift in the direction along the weft threads.

[0025] Figure 3 shows how the friction element 2 is slid (moved) on the fabric 1 in a wet and hot state in this slip process S5. As shown in Figure 3, the friction element 2 used in the slip process S5 is formed, for example, by fixing a polyurethane cord 4 in a partial circular shape on the outer periphery of an annular metal 3. In the slip process S5, an operation of slipping the warp threads is performed using such a friction element 2.

[0026] Figure 4 schematically shows how the warp threads 5 slip due to this slip operation. During this slip operation, as shown in Figure 4, the friction element 2 is translated along the weft thread 6 in a posture where the central axis of its annular metal 3 is perpendicular to the weft thread 6.

[0027] As a result, friction is applied to the warp 5 by the polyurethane of the friction element 2, and the warp 5 slips along the weft 6. This slip is easily performed because the water-soluble vinylon yarn twisted in the warp preparation step S2 is removed in the scouring and dyeing step S4.

[0028] However, since this slip is performed in a state where the fibers of the fabric 1 are swollen as described above, when the slip occurs to a certain extent, the slip stops.

[0029] By the slip operation using this friction element 2, in the fabric 1, the warp 5 is in a crimped state where it is crumpled while bending as shown in FIG. 4 with respect to the straight weft 6. When the slip step S5 is completed, a silk-PE interwoven fabric in which the raw silk of the warp 5 and the PE processed yarn of the weft 6 are interwoven is obtained.

[0030] Note that thereafter, when the silk-PE interwoven fabric dries, the swollen state of the fabric fibers is eliminated, so the crimped state when the above slip stopped is fixed, and no slip occurs anymore.

[0031] FIG. 5 shows a silk-PE interwoven fabric 7 obtained through the slip step S5. As shown in FIG. 5, a silk-PE interwoven fabric 7 with a design by a random warp pattern caused by the slip of the warp 5 in the slip step S5 is obtained.

[0032] This design by the random warp pattern is irreversibly expressed and fixed by locally increasing and decreasing the density of the warp 5 by the intentional slip of the warp 5 in the slip step S5. Therefore, in the random warp pattern of the obtained silk-PE interwoven fabric 7, no further accentuation or slip occurs.

[0033] FIG. 6 shows the parameters related to this random warp pattern. As shown in FIG. 6, this warp pattern is formed by the repetition of a low-density portion 8 and a high-density portion 9 caused by the slip of the warp 5 in the slip step S5.

[0034] The low-density portion 8 has an expanded interval between the warp threads 5 compared to the interval α between the warp threads 5 corresponding to the warp thread density (56 threads / cm) in the design conditions of Table 1 above, and is a portion where the density of the warp threads 5 is lower than the warp thread density. The high-density portion 9 has a narrowed interval between the warp threads 5 compared to the interval α between the warp threads 5, and is a portion where the density of the warp threads 5 is higher than the warp thread density.

[0035] Therefore, regarding the expression of the warp pattern, in addition to the warp thread density [threads / cm] (interval α between the warp threads 5) and the weft thread density [threads / cm] (interval β between the weft threads 6) in the design conditions of Table 1 above, the width γ of the low-density portion 8 and the width δ of the high-density portion 9 are related. As shown in FIG. 6, local high-density portions 9 and low-density portions 8 of the warp threads 5 are repeated on the fabric, and a warp pattern is formed.

[0036] Therefore, in addition to the design conditions of Table 1 related to the intervals α and β above, by appropriately and arbitrarily selecting the values of the widths γ and δ and performing the slip process S5 so as to be realizable, a silk-PE interwoven fabric 7 having an arbitrary random pattern without causing eye-catching or slipping can be obtained.

[0037] As described above, according to the present embodiment, when manufacturing a fabric using raw silk for the warp threads 5 and polyethylene fibers for the weft threads 6, when the fabric is in a swollen state caused by performing the scouring and dyeing process S4, since it includes the slip process S5 of sliding the raw silk in the weft direction, it is possible to manufacture a silk-PE interwoven fabric 7 having a pattern in which the density of the warp threads 5 changes randomly and irreversibly in the weft direction.

[0038] Also, since a twisting process of twisting a water-soluble vinylon thread with the polyethylene fiber is performed prior to the weaving process S3, the water-soluble vinylon thread is removed in the scouring and dyeing process S4, creating voids between the weft threads 6 by that amount, and in the slip process S5, an operation of sliding the raw silk in the weft direction with respect to the weft threads 6 can be easily performed.

[0039] Further, prior to the ply-twisting step, by performing a stretching step of stretching the polyethylene fiber, the polyethylene fiber is made thinner to increase the surface area and improve the heat dissipation property, so that the cold sensitivity of the obtained silk-PE woven fabric 7 can be improved.

[0040] Note that the present invention is not limited to the above-described embodiment. For example, as the friction element, it is not limited to the friction element 2 using the above-described polyurethane cord, and any other material may be adopted as long as it has a function of imparting a frictional force for appropriately slipping the warp. Also, a plurality of friction elements may be simultaneously translated to efficiently slip the warp.

Explanation of Reference Numerals

[0041] 1... woven fabric, 2... friction element, 3... metal, 4... polyurethane cord, 5... warp, 6... weft, 7... silk-PE woven fabric, 8... low-density portion, 9... high-density portion.

Claims

1. A method for producing a woven fabric using raw silk as a warp yarn and polyethylene fiber as a weft yarn, comprising the steps of: a weaving step of weaving the raw silk and the polyethylene fibers to form a woven fabric; A refining and dyeing process for refining and dyeing the woven fabric obtained by the weaving process; A method for producing a silk and polyethylene woven fabric, characterized in that it comprises a slipping process for slipping the raw silk constituting the warp thread against the polyethylene fiber constituting the weft thread using a friction element when the fibers of the fabric obtained by the refining and dyeing processes are in a swollen state due to the refining and dyeing processes.

2. 2. The method for producing a silk-polyethylene mixed woven fabric according to claim 1, further comprising a plying and twisting process for plying and twisting the polyethylene fibers with water-soluble vinylon yarn prior to the weaving process.

3. The method for producing a silk-polyethylene union fabric according to claim 2, further comprising a drawing step of drawing the polyethylene fibers prior to the plying and twisting step.

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