CN102995199A - Processing method of double-component elastic spandex core-spun yarn - Google Patents

Abstract

The invention discloses a processing method of a double-component elastic spandex core-spun yarn, comprising raw materials, production steps and production process improvement thereof, wherein the raw materials include a first elastic spandex filament, a second elastic spandex filament and wrapping yarn; the second elastic spandex filament is half of the first elastic spandex filament in diameter, and the two elastic spandex filaments differ in traction multiple; and the wrapping yarn is a short fiber; the production steps include: rolling the comparatively thick wrapping yarn into the form of a flat strip; before entering into a spinning room, guiding both the elastic spandex filaments as double cores to the middle of the flat-strip shaped wrapping yarn; folding the flat-strip shaped wrapping yarn by taking the double cores as a fold line, and covering the double cores on the fold line in the flat-strip shaped wrapping yarn; feeding the double cores and the folded flat-strip-shaped wrapping yarn into the spinning room, and stretching and twisting in an 8-shaped form to form the double-component elastic spandex core-spun yarn. The product is elastic and free from the feeling of being too tight on the body, and overcomes the shortcoming of being insufficient in elasticity or too tight.

Description

A processing method of two-component elastic spandex core-spun yarn

technical field

The invention relates to a production process of a core-spun yarn, in particular discloses a processing method of a two-component elastic spandex core-spun yarn.

Background technique

The elasticity of the traditional elastic spandex core-spun yarn depends on the thickness of the elastic spandex in the yarn and the stretching ratio of the spandex. Small, so when the spandex core-spun yarn produced is made into clothing, the clothing produced by the yarn with high elasticity will give people a sense of discomfort due to the strong force of the body when wearing it. Clothes produced by thread, because the elasticity is too small, can not reflect the elastic effect, and the curve of the body cannot be displayed. Therefore, developing a kind of clothing material that has certain elasticity and is not too tight, and has a strong sense of comfort, and caters to the needs of consumers has become the common goal of the textile industry.

Contents of the invention

A processing method of two-component elastic spandex core-spun yarn discloses a production and processing method of a new type of core-spun yarn in order to solve the above problems, including: raw materials, production steps and production process improvement; the raw materials are: first Elastic spandex filament, second elastic spandex filament and outsourcing yarn, the diameter of the second elastic spandex filament is half of the diameter of the first elastic spandex filament, the pulling multiples of the two kinds of elastic spandex filament are also different, and the outsourcing yarn is Staple fiber (referred to as the outer covering yarn below); its production steps: rolling and stretching the thicker covering yarn into a flat strip covering yarn, and using the first and second elastic spandex filaments as The double cores are introduced into the middle of the flat strip-shaped covering yarn, and then the flat strip-shaped covering yarn is folded in half with the double core as the folding line, and the double core composed of the aforementioned two kinds of elastic spandex filaments is wrapped in the flat strip-shaped covering yarn At the folding line, the final double core and the folded flat strip-shaped outsourcing yarn are introduced into the spinning chamber together, and "8"-shaped stretching and twisting are performed to form a two-component elastic spandex core-spun yarn; production process improvement: in the original equipment Two filament spindle bases (6, 6') and a filament introduction device (7) are respectively arranged on the top, and a flat strip-shaped outer covering yarn folding device (8) is arranged at the entrance of the spinning chamber (4), and the outer covering yarn ( 2) Set up the first group of rollers (9), the second group of rollers (10) and the third group of rollers (11) on the way before introducing the spinning chamber (4), and adjust the speed of the first group of rollers (9) to 0.1-0.5 seconds slower than the speed of the second group of rollers (10), but the pressure of the two groups of rollers is the same, so as to form a preliminary rolling stretch zone between the first group of rollers (9) and the second group of rollers (10) (12), the speed of the third group of rollers (11) is the same as that of the second group of rollers (10), and the pressure is the same, forming a rolling zone between the second group of rollers (10) and the third group of rollers (11) (13), guide wheels (18) are set above the front and top of the third group of rollers (11); the flat strip-shaped outsourcing yarn folding device (8) is a kind of "V" shape at the entrance (15), and gradually reaches the exit. A groove member that becomes a long and narrow "U"-shaped outlet (16), the depth of the outlet (16) is half the depth of the inlet (15), and a gradual rise is formed from the bottom of the inlet (15) to the bottom of the outlet (16) , arched, slightly R-angled slope-shaped groove bottom (17), when viewed from the side, the end of the slope-shaped groove bottom (17) near the entrance (15) is arched and arc-shaped, close to the entrance and exit (16) One end is rising, where R=0.1~0.3mm, the upper opening of the groove member is in the shape of a "herringbone"; the outlet (16) of the flat strip-shaped outer covering yarn folding device (8) is tightly fixed in the spinning chamber (4), and make the entrance (15) of the flat-shaped outsourcing yarn folding device (8) opposite to the output end of the third group of rollers (11); the first group of rollers (9), the second group of rollers ( 10) and the third group of rollers (11) are composed of front and rear rollers. The outer covering yarn (2) enters the preliminary rolling and stretching zone (12) after being preliminarily rolled by the first set of rollers (9), because the rotating speed of the second set of rollers (10) is 0.1 faster than that of the first set of rollers (9). ~0.5 seconds, so the covering yarn (2) is simultaneously stretched and rolled in the area of the preliminary rolling stretching zone (12) to form a flat strip-shaped covering yarn (2'), and the flat strip-shaped covering yarn (2') is The second group of rollers (10) enters the rolling area (13) after being stretched and rolled. Since the pressure and speed of the third group of rollers (11) are the same as those of the second group of rollers (10), the initial rolling The shape and tension of the flat strip-shaped outer covering yarn (2') formed by compression and stretching are stable in the area of the rolling zone (13); the first elastic spandex filament (1) and the second elastic spandex filament (1') are The filament guiding device (7) is guided to the guide wheel (18), and the guide wheel (18) is facing the center of the third set of rollers (11), ensuring that the two elastic spandex filaments (1, 1') are aligned after being merged The central position of the flat strip-shaped covering yarn (2') in the rolling area (13), and then the flat strip-shaped covering yarn (2') is rolled by the third set of rollers (11) and then enters the flat strip-shaped covering yarn In the entrance (15) of the folding device (8), and enter the spinning chamber (4) from the outlet (16) of the flat strip outer covering yarn folding device (8), and complete "8" in the spinning chamber (4) The zigzag stretching and twisting forms the finished two-component elastic spandex core-spun yarn (5), and is wound on the core-spun spindle (14).

The present invention has the following advantages: 1. It does not need to make major improvements to the existing equipment, and the operation is simple; 2. It changes the way of spiral winding of the outer yarn around the core in the traditional technology, and the interaction between the outer yarn and the core. The two spinning methods of "8" shape twisting make the outer covering yarn tightly wrapped on the appearance of the double core (the first and second elastic spandex filaments) as a wrapping layer, and the two-component elastic spandex is formed by stretching and twisting Therefore, even if the product of the present invention is woven into cloth, the double-core filaments are always tightly wrapped in the outer covering yarn, and the double-core filaments will not be exposed due to uneven force, scrubbing, etc. 3. The fabric made of the product of the present invention has the characteristics of high elasticity and strong comfort. It does not feel too tight, and overcomes the defect of insufficient elasticity.

Description of drawings

See accompanying drawing, Fig. 1 is a schematic diagram of the process structure of the present invention;

Fig. 2 is that two kinds of elastic spandex filaments of the present invention are introduced into the middle part schematic view of the flat strip-shaped outer covering yarn;

Fig. 3 is the schematic diagram after two kinds of elastic spandex filaments of the present invention and flat strip-shaped outsourcing yarn are folded in half;

Fig. 4 is that two kinds of elastic spandex filaments of the present invention and the flat strip-shaped outsourcing yarn are folded in half and then enter the spinning chamber to twist the direction schematic diagram;

Fig. 5 is two kinds of elastic spandex filaments of the present invention and flat strip-shaped outsourcing yarn stretching and twisting schematic diagram in spinning chamber;

Fig. 6 is a perspective view of the structure of the device for folding flat strip-shaped covering yarns of the present invention. the

Detailed ways

Below, the technical features of the present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

Referring to Figures 1 to 6, it includes two kinds of elastic spandex filament spindle seats (6, 6') added above the traditional production equipment, filament introduction device (7), guide wheel (18), in the spinning chamber (4 ) is installed at the entrance of the flat strip-shaped outsourcing yarn folding device (8), and between the entrance (15) of the flat strip-shaped outsourcing yarn folding device (8) and the introduction device of the outsourcing spindle, three sets of rollers are set, that is, from the outsourcing spindle to the At the entrance (15) of the flat-shaped outer covering yarn folding device (8), there are the first group of rollers (9), the second group of rollers (10) and the third group of rollers (11), the first group of rollers (9) and the third group of rollers Between the second group of rollers (10) is the preliminary stretch rolling zone (12), between the second group of rollers (10) and the third group of rollers (11) is the rolling zone (13), and each group of rollers is formed by the front , The last two rollers are composed.

Example: the covered yarn (2) is sequentially introduced into the first group, the second group and the third group of rollers from the covered spindle through the covered yarn introducing device, and a flat strip-shaped covered yarn is formed in the preliminary stretching and rolling area (12) (2'), but because the speeds of the first set of rollers (9) and the second set of rollers (10) are different, but the pressure is the same, so the flat strip-shaped outer yarn (2') is not only in the state of being rolled, but also in the state of pulling In the stretched state, its shape and tension are not stable. When the flat-shaped outer covering yarn (2') enters the rolling zone (13), the speed and pressure of the second set of rollers (10) and the third set of rollers (11) are all the same, so the shape and tension of the flat strip-shaped outer covering yarn (2') can be in a stable state in the rolling area; two kinds of elastic spandex filaments (1, 1') are introduced into the device (7), guided The wheel (18) is introduced to the input end of the third group of rollers (11), and the front roller (3) of this group of rollers is pressed on the middle position of the flat strip-shaped outer covering yarn (2'), and the flat strip-shaped outer covering yarn is folded in half The device (8) enters the spinning chamber (4) after being folded in half to form a two-component elastic spandex core-spun yarn (5) after twisting.

Claims (2)

1. A processing method for a two-component elastic spandex core-spun yarn, comprising: raw materials, production steps and production process improvement thereof; the raw materials are: first elastic spandex filament (1), second elastic spandex filament (1' ) and outer covering yarn (2), the diameter of the second elastic spandex filament (1') is half of the diameter of the first elastic spandex filament (1); its production steps: rolling and pulling the thicker covering yarn (2) Stretched into a flat strip-shaped covering yarn (2'), before entering the spinning chamber (4), the first and second elastic spandex filaments (1, 1') are introduced into the flat strip-shaped covering yarn ( 2') in the middle position, then fold the flat strip-shaped outer covering yarn (2') in half with the double core as the folding line, and wrap the double core composed of the aforementioned two kinds of elastic spandex filaments (1, 1') in the flat strip-shaped outer covering At the folding line inside the yarn (2'), the last double core and the folded flat strip-shaped outer covering yarn (2') are introduced into the spinning chamber (4) together, and are stretched and twisted in an "8" shape to form a two-component Stretch spandex corespun yarn (5). 2. The processing method of a two-component elastic spandex core-spun yarn according to claim 1, characterized in that the stretching ratios of the first and second elastic spandex filaments (1, 1') are different ; The outer covering yarn (2) is short fiber.

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