JP2014001484A - Method for producing windproof knitted fabric and composition of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a windproof knitted fabric from which clothing having a soft feel and comfortable when worn can be produced, and which is increased in knitted fabric density and is provided with windproof and waterproof functions to be formed into highly functional clothing having waterproof, windproof and dustproof functions, thereby being increased in economic value.SOLUTION: In a method for producing a windproof knitted fabric and a composition of the same of the present invention, a yarn which is obtained by blending fibers mainly different in shrinkage and has an intermediate shrinkage between the two shrinkages thereof is knitted in a high knitting density into a structure such as a single layer or double layer structure, or a circular rib structure or a fleece structure. A loop length of the windproof knitted fabric knitted thereby shrinks appropriately under the high knitting density. The windproof knitted fabric is knitted under a condition in which a constant difference is given between a yarn feeding speed and a knitting speed to form a comfortable feel rich in flexibility and elasticity resulting from the knitting method, in the windproof knitted fabric. In addition, the windproof knitted fabric of the present invention is provided with a waterproof effect so as to be formed into a fabric suitable for functional clothing, thereby being increased in economic value.

Description

  The present invention relates to a method of manufacturing a windproof knitted fabric and its composition, and more particularly to a high density windproof knitted fabric and a method of manufacturing the structure.

  In general fabric manufacturing methods, there are two types of fabric manufacturing methods in which a plain weaving method and a knitting method are commonly found. Among them, the woven fabric produced by the plain weaving method has a high density, no elasticity, tension on the fabric, and structural characteristics such that it can be waterproofed. On the other hand, knits manufactured by the knitting method have structural characteristics such as low density, elasticity, soft fabric and air permeability, and fabrics of different manufacturing methods are applied to different products.

  However, when a waterproof garment is manufactured using a plain weave fabric in order to obtain waterproof properties, the waterproof garment as a whole is relatively relatively dense due to its high density and non-elastic structural characteristics. It becomes hard and is likely to cause discomfort when worn by the user for a long time. As shown in FIGS. 1 and 2, the knit 10 by a general knitting method has a relatively long loop 11 of the knit 10 and a slightly low density. Therefore, the knit 10 has a soft touch and elasticity. It is comfortable when worn, but cannot provide waterproof functionality. Since the length of the loop 11 is long and the density of the knit is low, the tightness of the structure is low and the surface is loose. Therefore, the knit is easily caught by an article and is damaged, and the service life is short.

None

  Therefore, the main object of the present invention is to use at least two types of fibers having different shrinkage ratios, blend fibers of different lengths into yarns, knit a windproof knitted fabric, It is used for manufacturing comfortable clothing when worn on the fabric, and the density of the knitted fabric is increased, and it is equipped with windproof and waterproof functions to make it highly functional clothing with waterproof, windproof and dustproof functions, enhancing economic value. An object of the present invention is to provide a windproof knitted fabric.

  Another object of the present invention is to knitting windproof knitted fabrics with different yarn feeding speeds and knitting speeds, changing the shrinkage characteristics, improving the density of the knit structure, and improving the stability of the surface with high density It is to provide a windproof knitted fabric that forms a high windproof structure and achieves high windproof performance.

In order to achieve the above object, the present invention further provides a method for producing a windproof knitted fabric. This manufacturing method includes the steps of yarn feeding, knitting, and reforming.
In the yarn feeding process, the yarn is fed out at a constant yarn feeding speed. The yarn consists of a blend of two types of fibers with different shrinkage rates. The two types of fibers are high shrinkage (BWS 15-85%) and low shrinkage (BWS-15- + 15%) fibers, respectively. The rate fibers are polyester (POLYESTER) fibers having a denier number of 15D to 100D, and the low shrinkage fibers are polyester fibers having a denier number of 15D to 100D (POLYESTER) fibers or nylon fibers having a denier number of 20D to 160D.
In the knitting process, a windproof knitted fabric is knitted by a knitting method. Knitting is performed at a constant knitting speed, and the yarn feed speed is 5 to 35% lower than the knitting speed.
In the reforming step, after the windproof knitted fabric is knitted, the surface of the windproof knitted fabric is modified.

  The windproof knitted fabric manufactured by the above-described manufacturing method is configured by mutually passing a plurality of loops, and the composition of the windproof knitted fabric has a constant knitted density, and the density value is a density in the warp direction. Is 50 to 150 g / in, the density in the weft direction is 80 to 140 g / in, the weight of one square meter is about 60 to 210 g / SQM, and the loop length is 3 to 25%.

  Since the yarn feed speed is 5 to 35% lower than the knitting speed, the line loop length of the windproof knitted fabric is shorter than the length when the yarn feed speed and the knitting speed are the same, and the windproof knitted fabric has a high loop density structure. The windproof knitted fabric has the flexibility and elasticity of the windproof knitted fabric, which not only enhances the windproof property, but also achieves a waterproof effect and has excellent functionality. It can also be used as a clothing, has the advantage of a close structure and long service life, and is combined with modification to solidify a high-density structure, forming a structure with low elasticity and high stability be able to.

It is the schematic of the conventional knit. It is the schematic of the loop of the conventional knit. It is a process flowchart of the knitting method of the present invention. It is the schematic of this invention. FIG. 3 is a schematic diagram of a loop of the present invention. FIG. 3 is a schematic diagram of another embodiment of the present invention.

The implementation process of the manufacturing method of the wind-proof knitted fabric of this invention includes the following processes, as shown in FIG.

<Thread feeding process>
The yarn feed 20 feeds the yarn from the yarn accumulator. The process in which the yarn accumulator sends out the yarn has a constant speed and forms a yarn feed speed.

<Knitting process>
The knitting 30 is a knitting method using a fine needle by a knitting machine to knit a windproof knitted fabric having a plurality of high-density loops. The knitting process has a constant speed and forms a knitting speed, of which the yarn feed speed is 5 to 35% lower than the knitting speed and the best value is 20%, ie the knitting speed is 20% higher than the yarn feed speed. %, Which simultaneously reduces the length of each loop of the windproof knitted fabric and increases the overall structural density of the windproof knitted fabric.

  Among them, the yarn is made by blending two kinds of fibers having different shrinkage ratios, and the shrinkage ratio and materials of the two kinds of fibers are high shrinkage ratios (BWS, Boiling Water Shrinkage boiling water shrinkage ratios of 15 to 85%. ), Polyester (POLYESTER) fibers having a denier number of 15D (Denier) to 100D (Denier), low shrinkage (BWS-15 to + 15%), and polyester having a denier number of 15D to 100D (POLYESTER). ) Combine fibers or another low shrinkage 20D-160D nylon (NYLON) fibers.

  The two types of fibers are blended according to a constant weight (or volume) ratio, for example, a ratio of high shrinkage to low shrinkage of 1: 1.5 to 1: 10.5 times. The fiber consists of a blend of a fiber in the form of a long fiber and a fiber in the form of another short fiber, and the blending method has a long fiber as the core and the outside is covered with the short fiber, or the short fiber is inside, The opposite structure is formed by covering the outside with long fibers, making the yarn properties between the physical properties of the original two types of fibers, and adjusting the ratio to make the yarn properties closer to long fibers, or short Can approach the fiber.

  The warp direction density formed by knitting with high-density knitting with fine needles is 50 to 150 g / in, the weft direction density is 80 to 140 g / in, and the weight of one square meter is about 60 to 210 g / SQM. . A knit having a loop length reduction ratio of 3 to 25% is knitted by knitting with fine needles.

The structure knitted by the fine needle includes a structure such as a single layer or a double layer, a milling structure or a fleece structure, and the wind speed is defined by an international standardized organization (ISO 9237) through post-modification processing. The pressure value can be between 100 PA and the windproof value between 50 and 100 cm ³ / cm ² / s.

  As shown in FIGS. 4 and 5, the windproof knitted fabric 40 knitted by the method of manufacturing a windproof knitted fabric is formed by mutually passing a plurality of loops 41, and the windproof knitted fabric 40 has a high density. The gap between the loops 41 is reduced until the above windproof and rainproof performance can be achieved, and the windproof / rainproof function and purpose can be achieved by improving the density of the windproof knitted fabric 40.

  In the present invention, since the yarn feeding speed of the yarn accumulator is reduced, the length of each loop 41 of the windproof knitted fabric 40 to be knitted is shortened, and the density of the loop 41 constituting the windproof knitted fabric 40 is increased. . The windproof knitted fabric 40 of the present invention knitted and knitted in this way has structural characteristics of flexibility and elasticity of knitting by the knitting method, and is suitable for use as a garment for a long time by a user. Yes. The present invention changes the relationship between the yarn feed speed and the knitting speed to increase the density of the loop 41 of the windproof knitted fabric 40, and can increase the density of the windproof knitted fabric 40, thus providing windproof properties. And can even reach the structural characteristics of waterproof level.

  At the same time, since the length of the loop 41 of the windproof knitted fabric 40 of the present invention is short, the surface of the windproof knitted fabric 40 becomes flatter and is less likely to be caught by surrounding articles when worn. Naturally, even if the windproof knitted fabric 40 is caught on an article by the tight surface, it is ensured that the windproof knitted fabric 40 is not damaged by the tight structure, and the service life of the windproof knitted fabric 40 is improved.

  As can be seen from the above, the present invention has both windproof and waterproof functions at the same time, and also has a flexible and elastic tactile feel, excellent functionality, comfortable in use, and high economic value. It can be applied to certain products, has a close structure, and has a long service life.

  Further, the windproof knitted fabric 40 manufactured as described above has a structure composed of a single-sided knitting method in the present invention, but can of course be knitted by a double-sided knitting method, as shown in FIG. The double side knitted windproof knitted fabric 40 can achieve the same effect as one side.

<Reforming process>
In order to make the structure after completion of knitting of the present invention more stable, it is necessary to carry out a reforming process after the knitting 30. In the reforming process, the windproof knitted fabric 40 after completion of the knitting 30 is heated. The surface of the windproof knitted fabric 40 is solidified by heating, the elasticity of the surface structure after the modification of the windproof knitted fabric 40 is reduced, the structure form is more stable, and the density after the knitting 30 is maintained. can do. In use, if only one side of the windproof knitted fabric 40 is modified and one side that is not modified is directed toward the user's skin, a comfortable tactile sensation can be provided. One surface after quality is directed outward, maintaining the stability of the structural density and providing better waterproof and windproof performance.

Conditions of modification, allowed to elapse of time of 1-5 seconds at a temperature of 190 to 205 ° C., a windproof air permeability of the physical properties of windproof knitted fabric under wind pressure value 100 Pa, windproof figures 3~50cm ³ / An international standard (ISO 9237) specification between cm ² / s is reached. In addition, it can meet the requirements of the AATCC 35 rain test and can have a waterproof knitted fabric structure.

The main purpose of manufacturing according to the present invention is to provide a manufacturing method and structure of knitted fabric with light material, windproof and rainproof function, and test the structure manufactured by the above method As a result, the data shown in Table 1 were obtained. Among them, the windproof value of each piece of cloth is between ^{3 and} 50 cm ³ / cm ² / s, and the appeal of windproof has been achieved. At the same time, there are numbers R6033, R6267, R0091, R1268, R2156, and the like as cloth types having a rainproof function, and the water flow amount in the rain test is 1 g or less, thus achieving the rainproof boundary.

Furthermore, when the test data (refer to Table 2) with a fabric having a commercial windproof function was compared, the following results were obtained.
(1) Lightness of the material: The present invention achieves the purpose of wind protection by making the structure of the fabric close and modifying it, and comparing the weight of the present invention with a commercially available windproof functional product, The present invention is reduced to 126-190 SQM compared to 190-347 SQM of commercial fabric, and is about 30-40% lighter. For this reason, the cost of transportation and the amount of CO ₂ emission can be suppressed, and the comfort when worn is also improved (see Tables 1 and 2).

  (2) Simplification of processing procedure: The present invention achieves various objectives by structural density and direct modification, and the procedure is clearly simplified compared to the conventional process of applying a windproof material in order to enhance the windproof property. And the use of chemical windproof materials can be reduced, avoiding secondary damage to the environment and reducing chemical injuries that can be caused by the windproof material when worn by the user.

  (3) Reduction of frictional noise due to movement during wearing: Since the present invention has no other material on the surface of the cloth, unnecessary noise does not occur even if it rubs against each other, and a commercially available windproof functional product is worn. The amount of noise at the time can be reduced, and the comfort when worn can be improved.

10: Woven fabric 11: Loop 20: Yarn feed 30: Knitting 40: Windproof knitted fabric 41: Loop

Claims (7)

A method of knitting a windproof knitted fabric,
A yarn feeding step of feeding the yarn at a constant yarn feeding speed, a knitting step of knitting a windproof knitted fabric at a constant knitting speed by a knitting method, and after knitting the windproof knitted fabric, A modification step for modifying the surface,
The yarn is composed of a blend of two types of fibers having different shrinkage rates, and the two types of fibers are fibers having a high shrinkage rate (BWS 15 to 85%) and a low shrinkage rate (BWS-15 to + 15%), respectively. The high shrinkage fiber is a polyester (POLYESTER) fiber having a denier number of 15D to 100D, and the low shrinkage fiber is a polyester (POLYESTER) fiber having a denier number of 15D to 100D or 20D to 160D nylon (NYLON). ) A method for knitting a windproof knitted fabric, characterized in that the yarn feeding speed is 5 to 35% lower than the knitting speed.   One of the two types of fibers is in the form of a long fiber structure and the other is in the form of a short fiber, which are mixed with each other, and the outside is covered with the short fiber with the long fiber as a core, or The knitting method for windproof knitted fabric according to claim 1, wherein the short fibers are inside and the outside is covered with the long fibers.   The two types of fibers are characterized by being blended at a ratio of 1: 1.5 to 1: 10.5 times the weight or volume ratio of the high shrinkage fibers and the low shrinkage fibers. The method for knitting a windproof knitted fabric according to claim 2.   The method for knitting a windproof knitted fabric according to claim 1, wherein the ratio of the yarn feed speed lower than the knitting speed is 20% as a best value.   The method for knitting a windproof knitted fabric according to claim 1, wherein the reforming step is performed by a heating method. The reforming conditions in the reforming step are 1 to 5 seconds at a temperature of 190 to 205 ° C., and the windproof air permeability of the physical properties of the windproof knitted fabric after the modification is lower than the wind speed pressure value of 100 PA. in, windproof numerical 50~100cm ³ / ^cm 2 / s, characterized in that to reach the standard of the International standard (ISO 9237) of between, the knitting method of windproof fabric according to claim 5.   A composition of a windproof knitted fabric manufactured by the knitting method of a windproof knitted fabric according to claim 1, wherein the windproof knitted fabric is formed by passing a plurality of loops, and the windproof knitted fabric. Has a knit density, the knot density value of the windproof knit fabric is 50-150 g / in in the warp direction density, 80-140 g / in in the weft direction density, and the weight of one square meter is about 60-210 g / SQM. A composition of a windproof knitted fabric characterized by having a loop length reduction of 3 to 25%.