CN103147202B - A kind of bicolor bamboo joint composite yarn and preparation method thereof - Google Patents

Abstract

The invention relates to a two-color slub composite yarn and a preparation method thereof. It is produced by a four-roller spinning frame. After adding bell mouths and roller grooves, three strands of roving can be input at the same time, and the slub fiber bundles can be impregnated and drawn separately. Breaking treatment: After impregnation, the bamboo fiber bundles are broken due to the intermittent movement of the rollers to form bamboo segments, and a small section is twisted between two parallel fiber bundles normally spun, showing a special fiber distribution. Form slub composite yarn with clear slub segments; two-color slub composite yarn has the advantages of multiple yarns, due to the special distribution of slubs at both ends of the broken slub segment and the difference in raw materials from parallel fiber bundles , The dyeing rate is different, so that different special effects will be presented after dyeing, the appearance is novel and diverse, and the change of color and function can be realized. Its market prospect is broad.

Description

A kind of two-color slub composite yarn and its preparation method

technical field

The invention relates to a two-color slub composite yarn and a preparation method thereof, belonging to the field of preparation of two-color slub composite yarn.

Background technique

Slub yarn is a single yarn with short segments of slubs or details in the length direction. The thick details are referred to as slubs. The appearance of slubs can be regular or irregular. The spinning principle of the traditional slub yarn is to add a slub yarn device to the three-roller spinning frame, the roving is input from the rear roller, and the speed of the rear, middle and front rollers is still increased accordingly during normal spinning. Change the speed of the rear roller according to the design requirements, resulting in the change of the draft ratio in the rear area of the spinning frame, while the speed of the front roller remains unchanged, and the slubs are formed by the drafting of the front roller. But they are all based on the change of roving, that is to say, the raw material remains stable, its style is relatively single, and it cannot combine the advantages of various yarns, the characteristics are not obvious enough, and the product types are not rich enough. The change of the size of the slub also depends on the roving weight and the drafting ratio of the spun yarn. The twist at the slub segment is relatively weak, showing low yarn strength and large strength unevenness. It is inconvenient to change varieties during production, and the product quality fluctuates greatly. Large and other problems, broken ends and inaccurate slub yarn parameters often occur during spinning.

Contents of the invention

The purpose of the present invention is to provide a slub yarn capable of changing colors and functions. Another object of the present invention is to provide a method for preparing the above-mentioned slub yarn.

In order to achieve the above object, a technical solution of the present invention is to provide a two-color slub composite yarn, comprising parallel fiber bundles 1 and 2 of normal spinning, characterized in that: the broken slub fiber The multi-segment bamboo segments formed by the bundles are twisted successively in the first parallel fiber bundle and the second parallel fiber bundle.

Another technical solution of the present invention is to provide a method for preparing the above-mentioned two-color slub composite yarn, using a four-roller ring spinning machine equipped with a device for preparing slub yarn, wherein the four-roller ring spinning The machine has a four-roller drafting device consisting of front rollers, middle two rollers, middle first rollers and rear rollers arranged in sequence. There are grooves 1 and 2 on the rear roller and middle roller respectively, and grooves 2 on the middle roller. There are three grooves and four grooves, and there is a corresponding bell mouth device between every two pairs of rollers. The slub yarn device will instantly control the intermittent movement of the middle two rollers. It is characterized in that the steps are:

Step 1. Parallel fiber bundle 1 and parallel fiber bundle 2 are respectively fed into the two sides of groove 1 of the rear roller through bell mouth 1 and bell mouth 2 respectively, and then enter through bell mouth 3 and bell mouth 4 in parallel after exiting the groove On the two sides of the groove 2 of the middle roller, the parallel fiber bundle 1 and the parallel fiber bundle 2 are stretched, and then enter the groove 3 and groove 4 of the middle roller in parallel through the bell mouth 5 and the bell mouth 6 respectively, and exit After the middle two rollers respectively pass through the bell mouth seven and the bell mouth eight to reach the front roller in parallel;

At the same time, the slub fiber bundles are fed into the groove 1 of the rear roller through the bell mouth 9 in parallel with the parallel fiber bundle 1 and the parallel fiber bundle 2 at a certain distance, enter the groove 2 of the middle roller through the bell mouth 12, and then pass through the Bell mouth 11 enters from the center of groove 3 and groove 4 of the second roller in parallel at a certain distance, and reaches the front roller synchronously through bell mouth 10 and parallel fiber bundle 1 and parallel fiber bundle 2;

Step 2. The middle two rollers move intermittently. When the middle two rollers stop running, the slub fiber bundles in the jaws of the front rollers are broken to form a small section of bamboo section, which is evenly connected with the parallel fibers. Bundle 1 and parallel fiber bundle 2 converge at the front nip of the front roller, and the three are twisted into one yarn through the twisting structure and then output to form the above-mentioned two-color slub composite yarn.

Preferably, the slub fiber bundle is impregnated before spinning.

Preferably, the step of pre-immersion treatment is: put the slub fiber bundle spindle into a 350-500L container, pour hot water at 90-100°C, and soak the slub fiber bundle spindle in hot water for 22-24h , dehydrated by centrifugal dehydration, after dehydration, the moisture content of the slub fiber bundles is kept at 20%-30%, and it is advisable to feel that the water cannot be squeezed out.

Preferably, the first parallel fiber bundle and the second parallel fiber bundle are two kinds of the same raw material, or two different raw materials.

Preferably, the first parallel fiber bundle and the second parallel fiber bundle are cotton or wool rovings with a specification of 333-1176 tex; the slub fiber bundles are bamboo fiber filaments with a specification of 75-150 denier.

The present invention has the following beneficial effects:

(1) It is produced on a four-roller spinning frame. After adding bell mouth and roller grooves, three strands of roving can be input at the same time, and the slub fiber bundles can be impregnated and broken separately without affecting the parallel fiber bundles;

(2) After the impregnation treatment, the bamboo fiber bundles are broken due to the intermittent movement of the rollers to form bamboo segments, and a small section is twisted between two parallel fiber bundles normally spun, showing a special fiber distribution. Form slub composite yarn with distinct slub segments;

(3) The present invention uses a variety of single yarns as raw materials. By analyzing the properties of various fibers and combining the functional requirements of the product, the raw materials of various single yarns are optimized, optimized and combined, and learn from each other. Among them, bamboo fiber filaments have Excellent hygroscopicity, bactericidal, antibacterial and anti-ultraviolet properties, due to the special distribution of bamboo nodes at both ends of the broken bamboo segment, and the difference in raw materials and parallel fiber bundles, the dyeing rate is different, resulting in different dyeing and finishing. Special effect, unique style, both the advantages of a variety of yarns, novel and diverse appearance, color change and function change, its market prospect is broad.

Description of drawings

Fig. 1 is the structural representation of slub composite yarn of the present invention;

Figure 2 is a schematic diagram of the production structure of the two-color slub composite yarn described in the present invention;

Fig. 3 is a top view structural schematic diagram of the rear roller 1 according to the present invention;

Fig. 4 is a top view structural schematic diagram of the first roller 2 according to the present invention;

Fig. 5 is a top view structural schematic diagram of the second middle roller 3 according to the present invention;

Fig. 6 is the structural representation of the sliver at the front jaw place of the present invention;

Figure 7 is a schematic diagram of the dyeing and finishing effect of the two-color slub composite yarn described in the present invention.

Detailed ways

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Example 1

In conjunction with Fig. 1 to Fig. 6, 2 parallel fiber bundles, i.e. parallel fiber bundle one 10 and parallel fiber bundle two 11, are selected as cotton roving, and the specification is 333 tex; bamboo fiber bundle 12 selects bamboo fiber filament, and the specification is 75 dawn. Parallel fiber bundle 10 and parallel fiber bundle 2 11 are respectively fed into both sides of groove 1 14 of rear roller 1 through bell mouth 1 7 and bell mouth 2 8 respectively, and then respectively pass through bell mouth 3 7' and bell mouth 4 8' parallel to enter the two sides of the groove 2 15 of the middle roller 2, and after being stretched, pass through the bell mouth 5 7" and the bell mouth 6 8" respectively and enter the groove 3 5 and the groove 4 6 of the middle roller 3 in parallel , and then reach the front roller 4 in parallel through the bell mouth seven'7 and the bell mouth eight'8 respectively;

Pre-treatment of slub fiber bundle 12 impregnation, put the slub fiber bundle spindle into a 350L container, pour hot water at 90°C, do not heat to high temperature in cold water, impregnate the slub fiber bundle for 22 hours, and dehydrate it by centrifugal dehydration method, keep a certain moisture content of 20%, slub fiber bundles 12 pass through bell mouth nine 9 between parallel fiber bundles one 10 and parallel fiber bundles two 11, and feed them in parallel at a certain distance to the groove one 14 of rear roller 1, Enter the second groove 15 of the first roller 2 through the bell mouth twelve 9', and then enter the groove three 5 and the fourth groove 6 of the second roller 3 parallelly through the bell mouth eleven 9" at a certain distance, and pass through the bell mouth When ten'9 reaches the front roller 4, due to the intermittent movement of the second roller 3, the slub fiber bundles in the jaws of the front roller 4 are broken, and a small section of slub fiber bundles produced in this way are evenly parallel to the Fiber bundle one 10 and parallel fiber bundle two 11 converge at the front jaws, and the three are twisted into one yarn through the twisting structure 13 before outputting. Main process parameters: temperature is 26°C, relative humidity is controlled at 70%, quantitative 1.80 g/100m, roller center distance 75mm*80mm, front roller speed 150r/min, twist coefficient 340, draft ratio 2.8. During the dyeing and finishing process, due to the special distribution of bamboo nodes at both ends of the broken bamboo segment, and parallel to the The raw materials of the fiber bundles are different, and the dyeing rate is different, so that the dyeing and finishing presents different special effects, that is, the two-color slub composite yarn shown in Figure 7 is obtained.

Example 2

Combining Figures 1 to 6, two parallel fiber bundles, that is, parallel fiber bundle one 10 and parallel fiber bundle two 11, choose cotton roving and wool roving respectively, and the specifications are 500 tex and 333 tex respectively; slub fiber bundle 12 chooses bamboo Fiber filament, the specification is 150 denier. Parallel fiber bundle 10 and parallel fiber bundle 2 11 are respectively fed into both sides of groove 1 14 of rear roller 1 through bell mouth 1 7 and bell mouth 2 8 respectively, and then respectively pass through bell mouth 3 7' and bell mouth 4 8' parallel to enter the two sides of the groove 2 15 of the middle roller 2, and after being stretched, pass through the bell mouth 5 7" and the bell mouth 6 8" respectively and enter the groove 3 5 and the groove 4 6 of the middle roller 3 in parallel , and then reach the front roller 4 in parallel through the bell mouth seven'7 and the bell mouth eight'8 respectively;

Pre-treatment of slub fiber bundle 12 impregnation, put the slub fiber bundle spindle into a 500L container, pour hot water at 100°C, do not heat to high temperature in cold water, impregnate slub fiber bundle 12 for 24 hours, and use a centrifuge Dehydration method dehydration, keep a certain moisture content of 30%, bamboo fiber bundles 12 pass through bell mouth nine 9, between parallel fiber bundles one 10 and parallel fiber bundles two 11, and feed them in parallel at a certain distance between grooves one 14 of rear roller 1 , enter the groove 2 15 of the first roller 2 through the bell mouth 12 9', and then enter the middle of the groove 3 5 and the groove 4 6 of the second roller 3 in parallel at a certain distance through the bell mouth 11 9", and pass through the horn When mouth 10'9 reaches the front roller 4, due to the intermittent motion of the second middle roller 3, the slub fiber bundles 12 in the jaws of the front roller 4 are pulled off, and a small section of slub fiber bundles produced in this way are evenly distributed. Converge with parallel fiber bundle 1 10 and parallel fiber bundle 2 11 at the front jaws, twist the three into one yarn through twisting structure 13 and then output. Main process parameters: temperature is 30°C, relative humidity is controlled at 75%, Quantitative weight 2.00g/100m, roller center distance 80mm*85mm, front roller speed 155r/min, twist coefficient 350, draft ratio 3.6. During the dyeing and finishing process, due to the special distribution of bamboo nodes at both ends of the broken bamboo segment, and The raw material difference and dyeing rate of parallel fiber bundles are different, so that the dyeing and finishing presents different special effects, that is, the two-color slub composite yarn shown in Figure 7 is obtained.

Claims (5)

1. A method for preparing a two-color slub composite yarn, the two-color slub composite yarn includes parallel fiber bundle one (10) and parallel fiber bundle two (11) normally spun, and the slub fiber bundle (12) The multi-segment bamboo segments formed by pulling are twisted in parallel fiber bundle one (10) and parallel fiber bundle two (11) in sequence, using a four-roller ring spinning frame equipped with a slub yarn device, wherein the four-roller The ring spinning frame has a four-roller drafting device consisting of front rollers (4), middle two rollers (3), middle first rollers (2) and rear rollers (1) arranged in sequence. The rear rollers (1) and There are groove 1 (14) and groove 2 (15) on the first middle roller (2), and groove 3 (5) and groove 4 (6) on the second roller (3). Every two pairs of rollers There are corresponding bell mouth devices in between, and the slub yarn device will instantly control the intermittent movement of the second roller (3), characterized in that the steps are: Step 1. Parallel fiber bundle 1 (10) and parallel fiber bundle 2 (11) are fed into both sides of groove 1 (14) of back roller (1) through bell mouth 1 (7) and bell mouth 2 (8) respectively , out of the groove one (14) and then through the bell mouth three (7') and the bell mouth four (8') in parallel into the two sides of the groove two (15) of the middle roller (2), parallel fiber bundle one ( 10) and the parallel fiber bundle two (11) are stretched, and then enter the groove three (5) and Groove four (6), out of the second roller (3) and then through the bell mouth seven ('7) and bell mouth eight ('8) to reach the front roller (4) in parallel; At the same time, the slub fiber bundles (12) are fed into the groove one (14) of the rear roller (1) at a certain distance between the parallel fiber bundle one (10) and the parallel fiber bundle two (11) through the bell mouth nine (9). ), enter the groove 2 (15) of the first roller (2) through the bell mouth twelve (9'), and then pass through the bell mouth eleven (9") from the groove three ( 5) It enters in parallel with the middle of groove four (6), and reaches the front roller (4) synchronously through bell mouth ten ('9) and parallel fiber bundle one (10) and parallel fiber bundle two (11); Step 2. The middle two rollers (3) move intermittently. When the middle two rollers (3) stop running, the slub fiber bundles (12) located in the jaws of the front rollers (4) are broken, thus forming a small section of The bamboo segment, the bamboo segment is uniformly merged with the parallel fiber bundle one (10) and the parallel fiber bundle two (11) at the front jaw of the front roller (4), and the three are twisted into one through the twisting structure (13). Output after root yarn to form two-color slub composite yarn. 2. The method for preparing a two-color slub composite yarn according to claim 1, characterized in that: the slub fiber bundle (12) is subjected to pre-impregnation treatment before weaving. 3. the preparation method of a kind of two-color slub composite yarn as claimed in claim 2, is characterized in that: the step of described pre-dipping treatment is: put slub fiber bundle spindle in the container of 350-500L, wash Put in hot water at 90-100°C, soak the slub fiber bundle spindle in hot water for 22-24 hours, and then dehydrate it by centrifugal dehydration. The moisture content should be kept at 20%-30%. 4. The preparation method of a two-color slub composite yarn according to claim 1, characterized in that: the first parallel fiber bundle (10) and the second parallel fiber bundle (11) are two kinds of the same raw materials , or for two different raw materials. 5. The preparation method of a two-color slub composite yarn according to claim 1, characterized in that: said parallel fiber bundle one (10) and said parallel fiber bundle two (11) are cotton or wool roving , the specification is 333-1176 tex; the bamboo fiber bundle (12) is bamboo fiber filament, the specification is 75-150 denier.