CN108342818A - A kind of cotton feeling knitted fabric - Google Patents

Abstract

The invention discloses a kind of cotton feeling knitted fabrics.The knitting fabric is to be formed by weft-knitted fabric, and at least dyeing portion A and dyeing portion B with different in size, different tones or different brightness on fabric by mixed fine false twist yarn；Wherein mixed fine false twist yarn is combined by the cation-dyeable polyester long filament and disperse dye dyeable polyester filament, to melt rate be 1~40% for it.The knitting fabric of the present invention has very strong cotton feel, and has good water imbibition, and brindled sense is presented in cloth cover, is suitable for making T-shirt and gym suit etc..

Description

A cotton-feeling knitted fabric

technical field

The invention relates to a cotton-feel knitted fabric, in particular to a cotton-feel knitted fabric with a stripe effect on the surface and excellent water absorption and quick-drying properties.

Background technique

Pure cotton products are soft and skin-friendly, and are widely used in underwear, sports T-shirts, etc., but in fact there are also problems such as easy wrinkling and deformation, especially sticking to the skin after sweating during exercise, and poor wearing comfort; at the same time, in recent years With the sharp rise in cotton prices, most textile enterprises consider using synthetic fibers such as polyester instead of cotton yarn in order to reduce production costs. Synthetic fiber cotton-proof fabrics are mainly polyester spun yarns and polyester air-textured yarns.

For example, the patent document CN201210569158.1 discloses a cotton-like knitted fabric, which is woven from pure polyester spun yarn, polyester-cotton spun yarn and spandex, and then obtained the cotton-like effect through high-temperature and low-alkali processing, but the spun yarn There is a lot of hairiness, the water cannot reach the end of the fiber, the capillary effect is limited, and the water absorption and quick-drying properties still need to be further improved. Moreover, the surface yarn is made of polyester staple fiber yarn, and there is no rich mottling feeling on the cloth surface.

Another example is the patent document CN201310343075.5, which discloses a low-denier cotton-feeling filament fabric. The warp and weft yarns are all low-denier nylon ATY, and the problem of difficult weaving of fine-denier warp yarns is solved through a specific weaving technology. Compared with short The water absorption and quick-drying properties of fiber yarn products have been improved; however, the surface of woven fabrics is dense, and the extensibility of movement is not as good as that of knitted fabrics, and the cortex on the surface of ATY has wire arcs and loops, which will cause poor thread snagging when applied to knitted fabrics. In addition, ATY processing consumes a lot of energy.

Contents of the invention

In view of the above problems, the object of the present invention is to provide a cotton-feel knitted fabric with good water absorption and quick-drying properties, good snagging performance and mottled effect.

Technical solution of the present invention:

The cotton-feeling knitted fabric of the present invention is a weft-knitted fabric formed of mixed fiber false-twisted processed yarn, and the fabric has at least dyed parts A and B of different lengths, different hues or different brightnesses; False-twisted processed yarn is compounded by cationic dye-dyeable polyester filament and disperse dye-dyeable polyester filament, and its fusion rate is 1-40%.

The present invention utilizes the different dyeability of fiber raw materials and the random arrangement of filaments after mixed fiber false twisting processing to obtain dyed parts with different hues or different brightness in the weft direction of the fabric, and the lengths of these dyed parts are random. The cotton-feel knitted fabric of the invention not only has the appearance and feel similar to cotton products, but also has good water absorption and quick-drying properties, and is suitable for making T-shirts and sportswear.

Description of drawings

Fig. 1 is a SEM photograph (150 times) of the cross-section of the blended false-twisted processed yarn of the present invention.

Detailed ways

The knitted fabric of the present invention is a weft-knitted fabric formed of mixed fiber false twist processed yarn, and the fabric has at least dyed parts A and B of different lengths, different hues or different brightness; wherein the mixed fiber false The twisted yarn is compounded by cationic dye-dyeable polyester filament (hereinafter referred to as CDP) and disperse dye-dyeable polyester filament (hereinafter referred to as ordinary PET), and its fusion rate is 1-40%.

The cotton-feeling knitted fabric of the present invention has at least dyed parts A and dyed parts B of different lengths, different hues or different brightnesses on the cloth surface, and the existence of dyed parts A and dyed parts B gives the fabric a pattern similar to cotton products Effect.

The mixed fiber false-twisted processed yarn of the present invention first destroys the parallel arrangement state of the original filaments through false-twisted deformation processing, and then uses polyester filaments with different dyeability as fiber raw materials, and the structure is more complex than conventional false-twisted textured yarns. Inhomogeneity, microscopically with coarse details in the length direction, increases the diffuse reflection of the surface of the fabric, thus obtaining a cotton-like appearance.

In the present invention, the fused rate refers to the ratio of the number of single fibers in a fused state on the cross section of the mixed-fiber false-twisted yarn to the total number. If the fusion rate is lower than 1%, the mixed fiber false twist processed yarn is too smooth, the surface of the fabric has little diffuse reflection, the gloss is too strong, and it has obvious chemical fiber style; if the fusion rate is higher than 40%, the mixed fiber false twist The microcosmic thick and fine details of the processed yarn are too obvious, and the hand feeling is not delicate, and the fused part (details) is too high, the yarn stiffness is relatively high, and the fabric has a strong waist feeling. Therefore, the mixed fiber false twist in the present invention The fusion rate of processed silk is 1-40%.

If the CDP content in the blended false twisted processed yarn is less than 30% by weight, the mottled feeling of the cloth surface made by it may be reduced, and the cotton feeling will be weakened; if the content is higher than 70% by weight, the cloth surface will appear after dyeing. With more CDP tones, the stripe length is too long, and the effect similar to the horizontal section appears, and the natural stripe feeling tends to decline. Therefore, it is preferable that the content of CDP in the mixed false-twisted processed yarn is 30 to 70% by weight, and the content of normal PET is 70 to 30% by weight.

In the present invention, in order to ensure the natural texture and hand feeling of the fabric similar to cotton products, the fusion rate of the mixed fiber false twisted processed yarn is preferably 3-35%.

In the present invention, preferably, ordinary PET-POY with a breaking elongation of 100% to 300% is heated by a hot plate and then entered into a false twist disc for false twisting, and then combined with a CDP-POY with a breaking elongation of 30% to 50%. The DTYs are combined and enter the entangler for entanglement. The heating on the hot plate is contact heating, and the heating temperature is preferably 210-250°C. If the heating temperature is too low, the fusion rate of the mixed fiber false twist processing yarn may be too low, resulting in a strong luster and obvious chemical fiber style; if the heating temperature is too high, it may lead to mixed fiber false twist processing. If the fusion rate of the silk is too high, the rigidity will be too high and the handle will not be delicate. In the obtained blended false twisted processed yarn, only the cationic dyeable polyester filaments are in a fused state, or only the disperse dyeable polyester filaments are in a fused state. The mixed fiber false twist processed yarn is obtained, and this method is the post-insertion method. In the obtained mixed fiber false twist processed yarn, only the CDP fiber is in a fused state, or only the ordinary PET fiber is in a fused state, and its structure is a side-by-side type. Between 3% and 35%, the luster is closer to cotton products; and the stripes on the fabric are long and short, the lengths of dyed part A and dyed part B are both between 0.5 and 80.0 mm, and they are randomly mixed together. Feel more natural.

In the present invention, it is preferred to combine CDP-POY with an elongation at break of 100% to 300% and ordinary PET-POY with an elongation at break of 100% to 300%, and then enter the false twist disc for false twisting after being heated by a hot plate. Twist, the heating on the hot plate is non-contact heating, and the heating temperature is preferably 370-460°C. If the heating temperature is too low, the fusion rate of the mixed fiber false twist processing yarn may be too low, resulting in a strong luster and obvious chemical fiber style; if the heating temperature is too high, it may lead to mixed fiber false twist processing. If the fusion rate of the silk is too high, the rigidity will be too high and the handle will not be delicate. The cationic dyeable polyester filaments and the disperse dyeable polyester filaments in the resulting blended false twisted processed yarn are in a fused state at the same time. The obtained mixed fiber false twist processed yarn is a side-by-side structure or a core-sheath structure, in which CDP and ordinary PET are in a fusion state at the same time, and the two kinds of POY filaments are mixed evenly, and the yarn section is partially fused, and the fusion rate is 15 ~25%, the gloss is lower and the hand feel is closer to cotton. Compared with the front-end insertion method, the stripes of dyed part A and dyed part B are relatively short in length, and a large number of dyed parts C appear at the same time. The length of each dyed part is between 0.5 and 50.0 mm, which can impart different colors to the fabric As a result, the markings are more natural.

In the present invention, it is preferable that stripes with a length of 0.5 to 80.0 mm exist in the weft direction of the fabric (surface). If the length of the stripes exceeds 80.0mm, the stripes on the fabric surface may be monotonous and artificial, and sometimes it may have an appearance similar to the horizontal section of the fabric surface, lacking a natural feeling.

In the present invention, if the total fineness of the mixed fiber false-twisted processed yarn is less than 100dtex, the densification and thickness of the fabric produced on the knitting machine with the same number of needles tend to decline, and it is difficult to obtain a skinny and thick feeling similar to cotton products; and If the total fineness is greater than 300dtex, the compactness and thickness are too large, and the cotton-like effect tends to decline. Therefore, it is preferable that the total fineness of the mixed false-twisted processed yarn is 100 to 300 dtex.

In the present invention, if the monofilament fineness of the blended false twisted processed yarn is greater than 1.1dtex, it may affect the delicate feel of the fabric; and in order to obtain a soft feeling similar to cotton products, the smaller the monofilament fineness, the better, but if the If the silk fineness is less than 0.5dtex, the handle will be soft and waxy, and the waistline feeling of the fabric will tend to decrease. Therefore, the monofilament fineness is preferably 0.5-1.1dtex.

In the present invention, it is preferable that there is a dyed part C between the dyed part A and the dyed part B. The intertwined filaments will form a new color tone due to the overlapping and mixing of hues, and the cloth surface will present a more natural mottled appearance.

The cotton-feeling knitted fabric of the present invention is a raised product, and the feel after raising is closer to that of cotton products. The equipment used for raising processing is not particularly limited, and Italian Sperotto sanding machine can be used, with a speed of 5-30m/min and a tension of 0.4- 0.6MPa, sand surface mesh number 160~240#.

The cotton-feeling knitted fabric of the present invention has no particular limitation on the knitting structure, and may be a plain stitch or a piqué weave, and is preferably a plain stitch.

The test method of each parameter involved in the present invention is as follows:

(1) Fusion rate

① Along the weft direction of the fabric, randomly cut 5 pieces of sample cloth with a size of 1cm×0.5cm;

②Put the sample cloth under a scanning electron microscope (SEM) for cross-sectional photographic analysis;

③Record the number of single fibers and the total number of fibers in the fused state observed at 150 magnifications, and then calculate the fused rate of the mixed fiber false twisted processed yarn on the single sample cloth according to the following formula,

Fusion rate (%) = the number of single fibers in the state of fusion / the total number of fibers of a single processed silk;

④Continue to observe the remaining 4 pieces, and calculate the average value of the 5 pieces of sample cloth.

(2) Length of weft stripes

①Observe under a microscope, randomly select 30 dyed parts A, dyed parts B, and dyed parts C of different shades or shades from the fabric;

② Measure the length of the selected dyed part A, and determine the length of the longest part and the length of the shortest part;

3. Then adopt the same method to measure the length of the longest part and the length of the shortest part respectively for other dyed parts B and C;

The weft stripe length of the fabric is judged by the longest length and the shortest length of the dyed part A, dyed part B and dyed part C measured above.

(3) Stripe feeling

10 people with experience in the field judged the appearance of the cloth surface. 8 or more people thought the pattern was rich and natural, and it was judged as ○, and 8 people or more thought that the pattern was somewhat monotonous, and it was judged as △. If the stripe feeling is monotonous and artificial, it was judged as x.

(4) Cotton-like feel

20 non-experienced persons conducted sensory evaluation on the fabric, and the number greater than or equal to 15 persons who think that the imitation cotton feels good is excellent, 10-14 persons are good, 5-9 persons are medium, and less than 5 persons are poor .

Below in conjunction with embodiment and comparative example the present invention will be further described.

Example 1

On the 28-needle single-sided circular knitting machine, 100% of the 210dtex-288f side-by-side mixed fiber false-twisted processed yarn obtained by the rear insertion type is selected (the fusion rate is 30%, and the content ratio of CDP: ordinary PET is 52:48). Plain stitches are woven to obtain gray fabrics, and then refined (90°C×20 minutes), CDP dyed (120°C×30 minutes), ordinary PET dyed (130°C×40 minutes), finished products are shaped (160°C×90 seconds), The cotton-feeling knitted fabric of the present invention is obtained through fluff processing.

The surface of the obtained fabric has dyed parts A and B of different lengths, rich and natural mottling, and excellent cotton-like hand feeling. The performance parameters are shown in Table 1.

Example 2

Select the 230dtex-288f side-by-side mixed fiber false-twisted processed yarn obtained by feeding at the same time (the fusion rate is 21%, the content ratio of CDP: ordinary PET is 57:43), and the rest are the same as in Example 1 to obtain the present invention. Cotton-feel jersey.

The surface of the obtained fabric has dyed parts A, B and C of different lengths, with rich and natural mottling, and excellent cotton-like hand feeling. The performance parameters are shown in Table 1.

Example 3

Select the 154dtex-144f side-by-side mixed fiber false-twisted processed yarn (melting rate 3%, CDP: common PET content ratio is 55:45) obtained by inserting after selection, and the rest are the same as in Example 1 to obtain the cotton of the present invention. Sensual knit fabric.

The surface of the obtained fabric has dyed parts A and B of different lengths, rich and natural mottling, and excellent cotton-like hand feeling. The performance parameters are shown in Table 1.

Example 4

Select the 170dtex-216f core-sheath mixed fiber false-twisted processed yarn obtained by feeding at the same time (the fusion rate is 15%, the content ratio of CDP:common PET is 41:59), and the rest are the same as in Example 1 to obtain the present invention. cotton-feel knitted fabric.

The surface of the obtained fabric has dyed parts A, B and C of different lengths, with rich and natural mottling, and excellent cotton-like hand feeling. The performance parameters are shown in Table 1.

Example 5

Select the 153dtex-168f side-by-side mixed fiber false-twisted processed yarn (melting rate 5%, CDP: common PET content ratio is 22:78) obtained by inserting after selection, and the rest are the same as in Example 1 to obtain the cotton of the present invention. Sensual knit fabric.

The resulting fabric had long dyed parts A and B, a somewhat monotonous pattern, and an excellent cotton-like feel. The performance parameters are shown in Table 1.

Example 6

Select the 165dtex-168f side-by-side mixed fiber false-twisted processed yarn obtained by feeding at the same time (the fusion rate is 25%, the content ratio of CDP: ordinary PET is 80:20), and the rest are the same as in Example 1 to obtain the present invention. Cotton-feel jersey.

The obtained fabric has dyed parts A, B and C of different lengths on the surface of the fabric, the pattern feeling is somewhat monotonous, and the cotton-like feel is excellent. The performance parameters of the obtained fabric are shown in Table 1.

Example 7

Select the 103dtex-180f side-by-side mixed fiber false-twisted processed yarn (melting rate 8%, CDP: the content ratio of common PET is 32:68) that obtains after inserting for use, all the other are the same as embodiment 1, obtain the cotton of the present invention Sensual knit fabric.

The obtained fabric has dyed part A and dyed part B with longer lengths on the cloth surface, rich and natural pattern feeling, and excellent cotton-like hand feeling. The performance parameters of the obtained fabric are shown in Table 1.

Example 8

Select the 299dtex-288f core-sheath mixed fiber false-twisted processed yarn obtained by feeding at the same time (the fusion rate is 20%, the content ratio of CDP:common PET is 44:56), and the rest are the same as in Example 1 to obtain the present invention. cotton-feel knitted fabric.

The surface of the obtained fabric has dyed part A, dyed part B and dyed part C with longer lengths, rich and natural pattern feeling, and excellent cotton-like hand feeling. The performance parameters are shown in Table 1.

Example 9

The fusion rate of the side-by-side mixed fiber false-twisted processed yarn used was 40%, and the rest were the same as in Example 3 to obtain the cotton-feeling knitted fabric of the present invention.

The surface of the obtained fabric has dyed parts A and B of different lengths, rich and natural mottling, and good cotton-like hand feeling. See Table 1 for details.

Example 10

Select the 93dtex-96f side-by-side mixed fiber false-twisted processed yarn obtained by feeding at the same time (the fusion rate is 19%, the content ratio of CDP:common PET is 35:65), and the rest are the same as in Example 1 to obtain the present invention. Cotton-feel jersey.

The surface of the obtained fabric has dyed part A, dyed part B and dyed part C with longer lengths, rich and natural mottling, and good cotton-like hand feeling. The performance parameters are shown in Table 1.

Example 11

No fluff processing was performed, and the rest were the same as in Example 1 to obtain the cotton-feeling knitted fabric of the present invention.

The surface of the obtained fabric has dyed parts A and B of different lengths, rich and natural mottling, and a cotton-like feel. The performance parameters are shown in Table 1.

Comparative example 1

The fusion rate of the side-by-side mixed fiber false-twisted processed yarn used was 0%, and the rest were the same as in Example 1 to obtain a knitted fabric.

The obtained fabric has dyed parts A and B of different lengths on the surface of the fabric, the pattern feeling is somewhat monotonous, and the cotton-like feel is poor. The performance parameters are shown in Table 1.

Comparative example 2

The fusion rate of the side-by-side mixed fiber false-twisted processed yarn used was 0%, and the rest were the same as in Example 2 to obtain a cotton-feeling knitted fabric.

The resulting fabric has dyed parts A, B and C of different lengths on the surface of the fabric, the pattern feeling is somewhat monotonous, and the cotton-like feel is poor. The performance parameters of the obtained fabric are shown in Table 1.

Comparative example 3

Choose 112dtex-144f CDP-DTY (0% fusion rate) and 100dtex-144f ordinary PET-DTY (0% fusion rate) to feed and weave at the same time, and the rest is the same as Example 1 to obtain a cotton-feeling knitted fabric .

The dyed part A and the dyed part B on the obtained fabric are relatively long, have the appearance similar to the horizontal section, the mottled feeling is very monotonous and artificial, and the cotton-like feel is poor.

Table 1

According to Table 1,

(1) From Example 3 and Example 5, it can be seen that under the same conditions, the fabric using mixed fiber false twist processed yarn with a CDP content of 55% is compared with the fabric using mixed fiber false twist processed yarn with a CDP content of 22%. , the cotton-like feeling of the two is equivalent, but the stripe feeling of the former is better than that of the latter.

(2) From Example 3 and Example 9, it can be seen that under the same conditions, fabrics using mixed fiber false twist processed yarn with a fusion rate of 3% and fabrics using mixed fiber false twist processed yarn with a fusion rate of 40% In comparison, the stripes of the two are equivalent, but the cotton-like feel of the former is better than that of the latter.

(3) From Example 10 and Example 7, it can be seen that under the same conditions, the fabric using the mixed fiber false twist processed yarn with a total fineness of 93 dtex is compared with the fabric using the mixed fiber false twist processed yarn with a total fineness of 103 dtex. The stripes are quite similar, but the cotton-like feel of the former is not as good as that of the latter.

(4) From Example 11 and Example 1, it can be seen that under the same conditions, the fabrics obtained without raising process have the same pattern feeling as the fabrics obtained after raising process, but the cotton-like feel of the former is not as good as that of the latter.

(5) As can be seen from Comparative Example 1 and Example 1, under the same conditions, fabrics using mixed fiber false-twisted yarns with a fusion rate of 0% and fabrics using mixed fiber false-twisted yarns with a fusion rate of 30% Compared with the former, the pattern feeling and cotton-like feel of the former are far inferior to the latter.

(6) From Comparative Example 2 and Example 2, it can be seen that under the same conditions, the fabric using mixed fiber false twist processed yarn with a fusion rate of 0% and the fabric with mixed fiber false twist processed yarn with a fusion rate of 21% Compared with the former, the pattern feeling and cotton-like feel of the former are far inferior to the latter.

(7) From Comparative Example 3 and Example 1, it can be seen that under the same conditions, the fabric obtained by feeding and weaving CDP and ordinary PET at the same time is compared with the fabric obtained by using CDP/ordinary PET blended false-twisted yarn. The imitation cotton feel is far less than the latter.

Claims (9)

1. a kind of cotton feeling knitted fabric, it is characterized in that：The knitting fabric is to be formed by weft-knitting by mixed fine false twist yarn Object, and the knitting fabric is up to the dyeing portion A and dyeing portion B less with different in size, different tones or different brightness；Institute Stating mixed fibre, false twist yarn is combined by the cation-dyeable polyester long filament and disperse dye dyeable polyester filament, it melts Rate is 1~40%.

2. according to the cotton feeling knitted fabric described in claim 1, it is characterized in that：In the mixed fine false twist yarn, the sun from Sub- dye capable of dyeing polyester filament content is 30~70 weight %, the disperse dye dyeable polyester filament content is 70~30 weights Measure %.

3. cotton feeling knitted fabric according to claim 1, it is characterized in that：The rate of melting of the mixed fine false twist yarn is 3 ~35%.

4. cotton feeling knitted fabric according to claim 1, it is characterized in that：The total fiber number of the mixed fine false twisting processing long filament is 100~300dtex, filament number are 0.5~1.1dtex.

5. cotton feeling knitted fabric according to any one of claims 1 to 4, it is characterized in that：The mixed fine false twist yarn In, the only described the CDP fabrics long filament is to melt state, or it is to melt state that the only described dispersion, which can contaminate polyester filament,.

6. cotton feeling knitted fabric according to any one of claims 1 to 4, it is characterized in that：The mixed fine false twist yarn In, the CDP fabrics long filament and the dispersion can contaminate polyester filament while to melt state.

7. cotton feeling knitted fabric according to claim 1, it is characterized in that：There are length in the broadwise of the knitting fabric is The striped of 0.5~80.0mm.

8. cotton feeling knitted fabric according to claim 6, it is characterized in that：In the knitting fabric, the dyeing portion A and dyeing There are dyeing portion C between portion B.

9. cotton feeling knitted fabric according to claim 1, it is characterized in that：The knitting fabric is fluffing product.