TWI692560B - Method of merging yarn - Google Patents

Abstract

A method for combining yarns includes the following steps: (A) providing a plurality of yarns and setting the yarns in a first direction. (B) A high-pressure spiral air flow is applied to the yarn intervals in the first direction, so that the yarns form a plurality of node portions. (C) Twist the yarns to make them twist into a composite yarn.

Description

Method of merging yarn

The invention relates to a method and a yarn for mechanical finishing of a yarn, in particular to a method and a composite yarn for combining yarns.

Conductive yarn is generally widely used in anti-static workwear such as semiconductor industry, electronics industry, medical engineering, biological engineering, etc., it can also be used in electromagnetic wave shields and other products, or used to operate capacitive touch screens Gloves. Therefore, compared to traditional textile materials, conductive yarn is a high-tech product in the textile industry.

In order to prevent the conductive yarn from breaking during weaving, the conductive yarn is usually twisted with other types of yarn to form a composite yarn with higher mechanical strength before being woven into fabric. At present, there are two main ways of twisting two yarns into one, one is the wrapping method of winding one yarn axially and the other; the other is the double twisting method of twisting the two yarns together. Among them, although the quality of the composite yarn made by the yarn covering method is good, but the production speed is extremely slow; and the composite yarn made by the double twist method is very fast, but the quality is poor.

Therefore, one of the objects of the present invention is to provide a production speed faster than the covered yarn and The method of merging yarn with better product quality than double twisting method.

Therefore, another object of the present invention is to provide a composite yarn made by the method of combining yarns.

Therefore, the method of combining yarns of the present invention includes the following steps: (A) providing a plurality of different yarns and setting the yarns in a first direction. (B) A high-pressure spiral air flow is applied to the yarn intervals in the first direction so that the yarns form a plurality of node portions. (C) Twist the yarns to make them twist into a composite yarn.

In some embodiments, in step (B), an air jetting machine is used to jet high-pressure gas to the yarns.

In some embodiments, the high-pressure gas pressure generated by the air jetting machine is between 1 and 5 kilograms per square centimeter.

In some embodiments, in step (C), a double-twisting machine is used to twist the same yarn into the composite yarn.

In some embodiments, the twist of the composite yarn is between 300 and 500 twists per meter.

In some embodiments, in step (A), the yarns have an electrically conductive yarn.

In some embodiments, in step (A), the yarns further have at least one reinforcing yarn for combining with the conductive yarn, and the reinforcing yarn has elasticity that can be stretched.

In some embodiments, the surface of the conductive yarn is coated with carbon black, carbon tube or graphite Coating.

Therefore, in the composite yarn of the present invention, a plurality of different yarns are preliminarily combined by the action of high-pressure gas to form a plurality of spaced node portions, and the composite yarn is twisted by the whole preliminarily combined yarn to make.

In some embodiments, the twist of the composite yarn is between 300 and 500 twists per meter.

In some embodiments, the yarns have an electrically conductive yarn.

In some embodiments, the yarns further have at least one reinforcing yarn for intertwining with the conductive yarn, and the reinforcing yarn has elasticity that can be stretched.

In some embodiments, the surface of the conductive yarn is coated with carbon black, carbon tube, or graphene coating.

In some embodiments, the main component of the conductive yarn is polyethylene terephthalate or nylon fiber.

In some embodiments, the material of the reinforcing yarn is polyethylene terephthalate, nylon fiber, polypropylene, polyethylene, or Kevlar fiber.

In some embodiments, the conductive yarn has a Danny number between 20 and 30.

In some embodiments, the reinforcing yarn has a Danny number between 30 and 300.

The invention has at least the following effects: firstly combine a plurality of yarns in a high-pressure air-jet method, and then twist the yarns after the preliminary combination to form a composite yarn, which is not only faster than the traditional method of using covered yarn Moreover, the quality of the combined yarn is also higher than that using the double twist method.

1: conductive yarn

2: Reinforcing yarn

3: composite yarn

9: Air spraying machine

91: Air nozzle

S1: Step

S2: Step

S3: Step

Other features and functions of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: FIG. 1 is a step flow block diagram of an embodiment of the method for merging yarns of the present invention; and FIGS. 2 to 4 are The schematic flow chart of this embodiment.

Referring to FIGS. 1 to 4, one embodiment of the method for merging yarns of the present invention is to twist the conductive yarn 1 and the reinforcing yarn 2 into a composite yarn 3 to prevent the conductive yarn 1 from breaking during the process of being woven into cloth. This embodiment includes the following steps:

In step S1, a conductive yarn 1 and a reinforcing yarn 2 are provided and the yarn is arranged along a first direction D1 (as shown in FIG. 2). The conductive yarn 1 is made of polyethylene terephthalate (PET) or It is made of nylon fiber (NYLON) and other materials immersed in conductive slurry, the Danny number is between 20 and 30 and the surface of the conductive yarn 1 contains carbon black (Carbon Black), nano carbon A conductive material such as a tube (CNT) or graphene (Graphene). The conductive material has an antistatic function to avoid static electricity accumulation caused by friction between the conductive yarn 1 and the human body. The reinforcing yarn 2 has stretchable elasticity, and the main material is polyethylene terephthalate (PET), nylon fiber (NYLON), polypropylene (PP), polyethylene (PE) or Kevlar fiber (Kevlar Fiber) etc. The reinforcing yarn 2 is mainly used to increase the mechanical strength of the composite yarn 3. Its thickness and weight are preferably greater than that of the conductive yarn 1 so the Danny number is controlled between 30 and 300.

In step S2, an air jetting machine 9 (see FIG. 3) is used to initially combine the conductive yarn 1 and the reinforcing yarn 2. The air jetting machine 9 has an air nozzle 91 capable of ejecting a pressurized spiral airflow. The air nozzle 91 is used to apply a high-pressure spiral airflow to the conductive yarn 1 and the reinforcing yarn 2 in the first direction D1, so that The yarns are intertwisted at each place by the high-pressure air flow to form a node portion 31, whereby the conductive yarn 1 and the reinforcing yarn 2 are preliminarily combined. The pressure of the high-pressure gas generated by the air jetting machine 9 is preferably controlled to be between 1 and 5 kg per cm 2. If the pressure is too small, the yarn is difficult to combine. On the contrary, if the pressure is too large, the yarn will be excessively entangled, causing the node 31 It is spherical and seriously affects the quality of the yarn.

In step S3, the yarns 1 and 2 after the preliminary bonding are twisted, so that the yarns 1 and 2 are twisted into a composite yarn 3 (see FIG. 4). In this embodiment, the conductive yarn 1 and the reinforcing yarn 2 that have been initially combined are introduced into a double-twisting machine (not shown) for subsequent twisting, so that the conductive yarn 1 and the reinforcing yarn 2 are twisted into the composite Yarn 3. The twister controls the twist of the composite yarn 3 (the number of twists per meter of yarn) between 300 and 500 twists per meter. If it is less than this range, it means that the twist of the composite yarn 3 is insufficient. Separated from each other; if it is greater than this range, the composite yarn 3 is prone to untwisting (thread ends at the yarn end). Because different yarns have different mechanical properties such as thickness, softness, strength, elasticity, and elongation at break, it is not easy to add two different yarn twists together, and it is easy to form a spherical shape at the junction of the yarns. Tangle points affect the quality of the yarn. In this embodiment, the two yarns 1 and 2 are preliminarily combined with the air jetting machine 9 to produce a plurality of nodes 31 (see FIG. 3). The yarns 1 and 2 that are preliminarily combined have a certain pinching force between The nodes 31 are pinned to each other), and it is easy to perform subsequent twisting, and it is less likely to produce spherical tangles at the joints. It is important to note that after the preliminary combined yarns 1 and 2 are subsequently twisted by the double twister, the yarns 1 and 2 are entangled to make the nodes 31 disappear (as shown in FIG. 4).

In this embodiment, only one reinforcing yarn 2 is used to combine with the conductive yarn 1, but the number of reinforcing yarns 2 can be increased according to requirements to meet different yarn strength standards. In addition, in other embodiments, two identical, different, or even multiple different yarns can be combined into a single yarn, which is not limited to the conductive yarn 1 and the reinforcing yarn 2 used in this embodiment.

In summary, in the method of combining yarns of the present invention, the conductive yarn 1 and the reinforcing yarn 2 are preliminarily combined by high-pressure air-jet method, and then the pre-combined yarns are twisted to form a composite yarn 3 Not only is it faster than the traditional method of using covered yarn, but also the quality of the combined yarn is higher than that of the method of using double twist. Therefore, the purpose of cost invention can indeed be achieved.

However, the above are only examples of the present invention, and should not be used to limit the scope of the present invention. Any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still classified as This invention covers the patent.

S1: Step

S2: Step

S3: Step

Claims (5)

A method for merging yarns, including the following steps: (A) providing a plurality of different yarns and arranging the yarns in a first direction, the yarns having an electrically conductive yarn, and at least one for A reinforcing yarn combined with the conductive yarn, the reinforcing yarn having elasticity that can be stretched; (B) applying a high-pressure spiral air flow to the yarn intervals in the first direction, so that the yarns form multiple nodes, Among them, in this step, an air jetting machine is used to spray high-pressure gas and applied to the yarns; and (C) twisting the yarns so that the yarns are twisted into a composite yarn. The method for merging yarns according to claim 1, wherein the high-pressure gas pressure generated by the air jetting machine is between 1 and 5 kg per square centimeter. The method for merging yarns according to claim 1, wherein in step (C), the yarns are combined and twisted into the composite yarn using a double twister. The method of merging yarns as described in claim 3, wherein the twist of the composite yarn is between 300 and 500 twists per meter. The method for merging yarns according to claim 1, wherein the surface of the conductive yarn contains carbon black, nano carbon tubes or graphene paint.

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