Yarn high volume


D02G3/24 - Bulked yarns or threads, e.g. formed from staple fibre components with different relaxation characteristics

 

(57) Abstract:

High volume yarn is a multi-component mixed flax-containing tobacco yarn with structural and color shaped effect, which meets the modern fashion trends products produced on its basis, allowing you to greatly expand the assortment fabrics for household purposes (Laundry, clothing, furniture, decorative), knitted fabrics and knitted goods and nonwoven fabrics. The yarn has shaped structural effect in longitudinal section, manifested in the presence of thickened and compacted areas, giving it the effect of perelistali, and in cross-section, which is manifested in the presence of angular shift between a characteristic point of the spins on the surface of runic. Structural shapes mixed effect Rove in cross section is created by distributing the fibers of the blend components in the core and the shell, which is achieved by using different geometric dimensions and physical properties of the fibers. Shaped effect in the cross section of rovings, which are also affected by the direction of the twist is the yarn by the presence of spasenoski. Spatial location is Oia sections of fiber thickened and compacted areas. Use the yarn as components of natural fibers such as cotton and linen, high moisture absorption, mixed with man-made fibers can significantly increase the hygroscopicity of the yarn and products on its basis. Mixed Rove due to the natural colouring of natural ingredients has the original colour effect and has lobodomy or christophobia appearance, making yarn and articles thereof can be used without the operation finishes. 3 C.p. f-crystals, 4 Il., table 4.

The invention relates to the textile industry and relates to high-volume multi-component mixed flax-containing tobacco yarn with structural and color shaped effect, which meets the modern fashion trends products produced on its basis, allowing you to greatly expand the assortment fabrics household products /linen, clothes, furniture, decorative/, hosiery and knitwear and woven fabrics.

The fashion trends for the coming period 1997 - 2000 stylists say there is diversity of contrasts. However, the diversity of areas can clearly be seen as one of kucherawy, "shaggy", used: boucle, heathered fabric, and momodani". A similar trend is seen in knitted fabrics and products, among which are also relevant melange loose and with the effect of a rustic hand-knitted. As noted by leading fashion designers and stylists for the production of such fabrics and knitted materials needed yarn having a striking appearance, i.e., shaped yarn /Image fashion, autumn winter 95/96, Moscow, JSC Design fashion, 1995/.

However, for the production of a new wave current is the use of blended yarns, in which spectacular look is created not only by way of its production, but also sets the structure of the yarn, created by the use of fibers, which differ in their main physico-mechanical properties, for example, in the case of use in the mixture as a natural staple fibers, such as cotton, wool and flax, and chemical staple fibers, such as polyacrylonitrile fiber /PAN/.

Known yarn high volume, produced from staple chemical /polyacrylonitrile - PAN/ fibers and consisting of yarns with alternating twist (Movshovich P. M. , Tobacco spinning, Moscow, Legprombytizdat, 1985, ragogna - zero zone, the area of the left twist - S. Rove have the same linear density, twist and the same stiffness due to the use of homogeneous fibers, so the angle of the axes of runic to the axis of the yarn in every thread the same. This leads to the same characteristic point of spins on the surface of runic forming the thread, are at a constant angle to the axis connecting the center of the yarn and rovings, the angular shift between the same characteristic points of the twist on the surface of runic not observed.

This yarn has a volume, which is achieved using a mixture of high and nizkozatratnyh components and application of the wet-heat treatment due to the bending of the fibers nizkoshirotnogo component; a color effect through the use of coloured threads and components; as well as the appropriate level of physical and mechanical properties for a range of weaving and knitting products, household products, i.e., can be used for garments, decorative fabrics. Main physical and mechanical characteristics of the yarn are shown in table 1.

But at the same time, the range of linear density of yarn produced is quite narrow when restricted to the longitudinal cross-section due to the constant diameter of the yarn d=const, and, accordingly, a constant fill factor of the cross section of the fiber; and in the cross section of the yarn due to the use of homogeneous fiber components are equal stiffness and rovnin the same linear density and twist. Coloristic effect of the yarn formed by the use of contrasting colored yarn is TravelSIM. Significant disadvantages of such yarns include low water absorption - the absorption of acrylic yarn W= 1.6 to 1.7%, which is caused by the use of 100% chemical fibers, resulting yarn is of limited use, particularly for underwear in product group fabrics and knitted fabrics for everyday use. This yarn is a traditional range and providing a range of physical and mechanical properties that meet their purpose, at the same time does not have simultaneous combination of structural and non-ferrous shaped effect that it is not possible to expand the assortment group of products that meet the aesthetic trends of modern fashion design.

The technical result of the invention consists in obtaining high-volume mixed is ructure due to the presence of structural effects in longitudinal section of yarn - due to the presence of thickened sections of diameter deand length Leand compacted areas with a diameter of dandand length Landwhen a variable duty cycle of the cross-section of a fiber KZap=var, and in the cross section of the yarn due to the presence of the angular shift between the same characteristic points of the twist on the surface of runic forming the thread, and also through the use of the yarn both natural and chemical staple fibers with different physical-mechanical properties, the presence of core and shell in cross section rovings formed by fibers with different stiffness; yarn with high volume through the use of raznousadochnyh fibers having high hygroscopicity due to the use of natural fibers; and the original color effect through the use of fibers with natural color and contrast coloured throughout the mass of fibers while maintaining the basic physical and mechanical properties of the yarn and efficiency of its development.

This technical result in the yarn high volume, consisting of yarns with alternating twist, is achieved in that in the longitudinal cross-section of the yarn is interlaced thickened uchastie, Lcf. in- the average length of the fiber mixture, mm, Land=L-Le, where L is the period length, mm, and thick sections are angular shift between the same characteristic points of the twist on the surface of the forming yarn runic relative to each other by an amount equal2b/m, where b is an empirical coefficient, m is the number of runic in the yarn, and the ratio between the fill factor of the cross section of the fiber thickened section Keand the fill factor of the cross section fiber of the compacted area Kandis Ke/Kand=0,24 - 0,39.

One of the threads is a mixed rovings from natural short staple fibers with an average length of 48 mm and a linear density of no more than 0.2 dtex, for example cotton, natural, long staple fibers with an average length of not more than 70 mm and a linear density of no more than 0.67 Tex, for example short purified flax and chemical staple fibers with an average length of not more than 70 mm and a linear density of no more than 0.33 Tex, for example polyacrylonitrile, and consists of a core and a shell, the other thread is a rovings their chemical staple fibers with an average length of not more than 70 mm and a linear density is of fair length Lcf. centuryfibers of the mixture is equal to 54 - 56 mm, the number m of runic of the yarn is equal to 2, and the empirical coefficient b is equal to 0.33 - 0,36.

One of the strands consists of two runic, one of which is a mixed rovings from natural short staple fibers with an average length of 48 mm and a linear density of no more than 0.2 dtex, for example cotton, natural, long staple fibers with an average length of not more than 70 mm and a linear density of no more than 0.67 Tex, for example flax, and natural long staple fibers with an average length of not more than 65 mm and a linear density of no more than 0,88 Tex, for example wool, and consists of a core and a shell, and the other rovings made of chemical staple fibers with an average length of not more than 70 mm and a linear density of no more than 0.33 Tex, for example polyacrylonitrile, while another thread is a rovings their chemical staple fibers with an average length of not more than 70 mm and a linear density of no more than 0.33 Tex, for example polyacrylonitrile, and the empirical coefficient a is equal 2,88 - 3,21, average length Lcf. centuryfibers of the mixture is equal to 58 - 60 mm, the number m of runic in the yarn is 3, and the empirical coefficient b is equal to 0.27 and 0.35.

Each thread consists of two R no longer than 48 mm and a linear density of no more than 0.2 dtex, for example, cotton, natural, long staple fibers with an average length of not more than 70 mm and a linear density of no more than 0.67 Tex, for example flax, and consists of a core and a shell, and the other rovings made of chemical staple fibers with an average length of not more than 70 mm and a linear density of no more than 0.33 Tex, for example polyacrylonitrile, while the empirical coefficient a is equal to 2.0 - 2,19, average length Lcf. centuryfibers of a mixture of 48.4 - 49,0 mm, the number m of runic in the yarn is 4, and the empirical coefficient b is equal to 0.31 in - 0,34.

In Fig. 1 depicts a high-volume yarn; Fig. 2 - section a-a in Fig. 1; Fig. 3 - section b-b of Fig. 1; Fig. 4 is a cross-section of the twisted yarn.

The yarn has shaped structural effect in longitudinal section, which is manifested in the presence of thickened (A) plots of diameter dewith the length of the effect of Leand compacted (B) plots of diameter dandwith length Land(Fig. 1). The presence of thickened and sealing sections gives the yarn effect pressurestate. The length of the thickened area is determined

Le= Lcf. in/a (1)

where a is an empirical coefficient,

Lcf. century- the average length of the fiber mixture, mm

Length opensolaris.com regime on tobacco spinning machine.

This effect is achieved using Ravnica different linear density of fibers with different physical and mechanical properties, as well as using the methods of the alternating twist performed on tobacco machines.

The yarn has shaped structural effect in cross-section, which is manifested in the presence of angular shift between a characteristic point of the spins on the surface of runic. In Fig. 4 shows a cross-section of the twisted yarn consisting of runic located at a certain angle to the axis of the yarn. From the center of the cross section twisted yarns Opheld tangent to the same characteristic points of the twist on the surface of runic C. the Perpendicular from the centre Rove Opon a tangent forms with the axis OpOCangle equal to

= 90-/m (3)

where m is the number of runic in the yarn.

The angular shift is due to the fact that the threads formed by adding different numbers of runic with different stiffness, are arranged in space in such a way that is offset from the same characteristics of the points of twist on the surface of runic C to the position C', the shift

= b/m, (4)

where m is the empirical coefficie the Itza has shaped structural effect in the cross section due to the distribution of fibers of the blend components in the core and the shell. This effect is achieved by using different geometric dimensions and physical properties of the fibers, resulting in a thick, having a large mass and stiffness of the fiber is pushed into the shell, and a thin and long fibers with less rigidity remain in the rod. On this structural effect is also influenced by the completeness of the mixing time and the amount of twist that also promotes migration of fibers from one layer to another. Shaped effect in the cross section of rovings, which are also affected by the direction of the twist is the yarn by the presence of spasenoski.

The spatial arrangement of runic and the presence of thickened and thinned plots is characterized by the ratio of fill factors sections of fiber thickening of Keand compacted Kandthe plots. The fill factor of the cross section fiber

KZap= Sn/SB, (5)

where Sn- the cross-sectional area of the yarn, mm2;

SB- area fibers in cross-section, mm2.

SB= nSeV, (6)

where n is the number of fibers in cross section;

S1B- the cross-sectional area of elementary fiber, mm

The number and type of fibers in any cross-section of the same yarn, RA is e yarn round, its area

Sn = d2/4, (8)

where d is the diameter of the cross section of the yarn, mm

The ratio of the fill factor of the cross section of the fiber thickened section Kethe fill factor of the cross section fiber of the compacted area Kand< / BR>
< / BR>
To obtain the inventive yarn are mixed Rove and Rove from homogeneous fibers.

One type of mixed Rove may be a two and produced from natural staple thin and short fibers, for example cotton, with an average length of 48 mm and a linear density of no more than 0.2 dtex when the module of elasticity of the second kind G = 251 g cm2(10-8); and long and thick fibers, such as short of nicknaming flax (CVNL), with an average length of not more than 70 mm and a linear density of no more than 0.67 Tex when the module of elasticity of the second kind G = 132 Pol2(10-8) when the ratio of components in a mixture of 70:30.

Another type of mixed Rove may be a three-part and being made from chemical staple long and thin fibers, such as polyacrylonitrile, with an average length of not more than 70 mm, with a linear density of not more than 0.33 Tex when the module of elasticity of the second kind G = 118 Pol2(10-8and on what Amnesty not more than 0.2 dtex when the module of elasticity of the second kind G = 251 Pol2(10-8); and long and thick fibers, such as short of nicknaming flax (CVNL), with an average length of not more than 70 mm and a linear density of no more than 0.67 Tex when the module of elasticity of the second kind G = 132 Pol2(10-8) when the ratio of components in a mixture of 30: 50:20.

Mixed three rovings can also be produced from natural staple thin and short fibers, for example cotton, with an average length of 48 mm and a linear density of no more than 0.2 dtex when the module of elasticity of the second kind G = 251 Pol2(10-8); long and thick fibers, such as short of nicknaming purified flax (CVNL), with an average length of not more than 70 mm and a linear density of no more than 0.67 Tex when the module of elasticity of the second kind G = 132 Pol2(10-8); and the long, thick fibers, for example wool, with an average length of not more than 65 mm and a linear density of no more than 0,88 Tex when the module of elasticity of the second kind G = 111 Pol2(10-8) when the ratio of components in a mixture of 50:30:20.

As a component of a thread can be used homogeneous rovings made from 100% chemical-dyed long and thin staple fibers, such as POLYACRYLONITRILE fibers with an average fiber length -8).

The yarn has a high volume through the use of raznousadochnyh components: vysokomarochnogo, for example, POLYACRYLONITRILE fibers, and malousadochnih, such as cotton and QUNL that under given conditions the wet-heat treatment (WTO) allows you to provide different lengths of twisted threads, giving the yarn roughness and roughness, with the following values of the process parameters:

Process temperature t,oC - 100

Humidity process , % - 90-95

The duration of the process T, s - 80

Use the yarn as components of natural fibers such as cotton and flax, which has a higher moisture absorption in a mixture with chemical fibers can significantly increase the hygroscopicity of the yarn and products on its basis. The inventive yarn is hydroscopic W = 4,8-5,5% due to the use of natural fibers / cotton, flax, wool/.

Mixed rovings due to the natural colouring of natural components (for example, cotton - cream, CWNL - gray, gray-green wool - yellow, gray-ash/ has original color effect, so along with the structural shapes of the effect yarn has lobodomy or christophobia appearance, so is it yarn and articles thereof can be used, do not expose the operation finishes.

We offer yarn produced from runic containing one, two or three components, the basic physical and mechanical properties are presented in table 2. The yarn is made of two strands, each of which consists of one or two runic in the combinations shown in table 3.

For different variants of the high volume of yarn (table 4) value of the empirical coefficient "a" weighted average length of the fibers of a mixture of Lcf. inthe length of the thickened area Leand the length of the compacted area Landthe value of the empirical coefficient b, the angular shift between the same points on the surface of runic , the number of runic in the yarn m, the ratio of the fill factor of the cross section of the fiber thickened and compacted areas shall have the following meanings:

1. Yarn high-volume three-two threads, each of which consists of one Rove:

a = 2.62-2.70, Lcf. IN= 54-56 mm, Le= 20-21,4 m, Land= 101,6-103,0 mm, b = 0,33-0,36 = 0,52-0,57, m = 2, Ke/Kand= 0,27-0,37;

2. Yarn high-volume three-two threads, one of which consists of two runic:

a = 2,88 -2,11, Lcf. IN= 58-59 mm, Le= 18,8 - 20.3 mm, Land
a = 2,93 - 3,21, Lcf. IN= 59,4 60 mm, Le= 18,5-20,4 mm, Land= 103,5 - 104,6 mm, b= 0,27 - 0,28, = 0,27-0,29, m = 3, Ke/Kand= 0.24 to 0.31 in;

4. Yarn high volume of two threads, each of which consists of two runic:

a = 2,0 - 2,19, Lcf. IN= 48,4 - 49 mm, Le= 22.1-24,4 mm, Land= 100,6 - to 102.9 mm, b= 0,31 - 0,34, = 0,24-0,27, m = 4, Ke/Kand= from 0.25 to 0.39.

This yarn is produced on commercially available equipment Cardin (hardware) the cotton spinning (wool) on tobacco spinning machines of the brand UCS-225-WD. The resulting yarn is subjected to wet-heat processing. Main physical and mechanical characteristics of the yarn are shown in table 4.

Example 1.2. Tobacco and three-component mixed flax-containing yarn produced by carding the cotton spinning on tobacco machines brand UCS-225 WD.

1. The structure and composition of runic, %

1 thread: 1 rovings

Flax - 20

Cotton - 50

PAN - 30

2 thread: 1 rovings

PAN - 100

2. The main physico-mechanical parameters of the mixture components

2. 1. Linear density, Tex

Flax is 0.55 - 0.67 and

Cotton - 0,18

PAN - 0,33

2.2. Crednerite the fiber, cH/Tex

Flax - -

Cotton - 25,6

PAN - 18,7

2.4. Normal humidity, %

Flax - 10,7

Cotton - 7,5

PAN - 1,6

2.5. The modulus of elasticity of the second kind, lubricants2(10-8)

Tape - 132

Cotton - 251

PAN - 118

3. Process chain.

Three (cotton-flax-polyacrylonitrile) rovings obtained by the following process chain. Cleaning and loosening of flax, cotton, POLYACRYLONITRILE fibers separately. To improve the technological terrain flax passes the operation of loosening on the feeder grade a-1 and a horizontal baking powder brand G-8, and then flows into the continuous mixer brand SN-1. Cotton automatic feeder brand AP-18 is inclined cleaners brand HE-6-4 marks HE-6-3, the axial purifier brand CHO, then in the dispenser brand DC-23, where the feeder brand P-1 is the PAN fibres. Next, linen, cotton, POLYACRYLONITRILE fibers are mixed in a continuous mixer brand SN-1. The resulting mixture of fibers passes scutching operations on the picker brand T-16, kladochnaja on the carding machines brand FM 50, addition and pulling on the two transitions tape brand cars C2-50-1 and brands C2-50-220 and predopredeny on Masha in the continuous mixer brand SN-1, then pass the operation scutching on the picker brand T-16, scratching at the carding machines company Textima, adding and pulling on the two transitions tape machines brand P2-51-2M and predopredeny machines brand R-192-3. Yarn is produced by spinning tobacco machines brand UCS-225-WD. The resulting yarn is subjected to wet-heat processing on machine brand "Shakira-Murat".

3. Physico-mechanical and geometrical characteristics of the yarn:

The linear density of the total R, Tex - 60

Relative bit load, P, cH/Tex - 6,5

Breaking elongation , % - 9,6

The number of turns in half, To, CR - 16

The coefficient of variation

linear density Cvt, % - 9,1

on discontinuous density Cvp, % - 10,3

on razryvnaya elongation Cv% - 11,7

the number of turns Cvto, % - 14,6

Residual shrinkage, % - 0,47

Normal humidity, W, % - 4,1

Srednevzveshanny the fiber length Lcf. inmm - 55

Length, mm thickening of the Le- 20,6

seal Land- 102,4

The empirical coefficient

- a - 2,67

- b - 0,33

The angular shift , rad - 0,52

Diameter, mm thickening of the de- 0,93

seal dand- 0,48

The ratio is 5. The component composition of the yarn, %

Cotton - 27

Len - 10

PAN - 63

Example 2.3. Tobacco and three-component mixed flax-containing yarn produced by carding the cotton spinning on tobacco machines brand UCS-SG.

1. The structure and composition of runic, %

1 thread: 1 rovings

Flax - 30

Cotton - 70

2 rovings

PAN - 100

2 thread: 1 rovings

PAN - 100

2. The main physico-mechanical parameters of the mixture components similar to that shown in example 1.2.

3. Process chain.

Two (cotton linen) rovings obtained by carding the cotton spinning. Cleaning and loosening of linen and cotton are produced separately. Flax is surgery opening in the feeder grade a-1 and a horizontal baking powder brand G-8, and then flows into the continuous mixer brand SN-1. Cotton automatic feeder brand AP-18 is inclined cleaners brand HE-6-4 marks HE-6-3, the axial purifier brand CHO, then in the dispenser brand DS-2. Next, linen and cotton are mixed in a continuous mixer darkness SN-1. The resulting mixture of fibers passes scutching operations on the picker brand T-16, cardace the arch C2-50-220 and predopredeny on the machines of the brand P-192. Obtaining homogeneous (100% PAN) Rove is in the processing chain described in example 1.2. Yarn is produced by spinning tobacco machines brand UCS-225-WD. The resulting yarn is subjected to wet-heat processing on machine brand "Shakira-Murat".

3. Physico-mechanical and geometrical characteristics of the yarn:

The linear density of the total R, Tex - 80

Relative tensile load P, CN/Tex - 8,2

Breaking elongation , % - 11,9

The number of turns on the half-period K, CR - 13

The coefficient of variation

linear density Cvt, % - 8,2

on discontinuous density Cvp, % - 11,7

on razryvnaya elongation Cv, % - 12,8

the number of turns Cvto, % - 14,8

Residual shrinkage, % - 0,93

Normal humidity, W, % - 3,4

The weighted average fiber length Lcf. inmm 58,5

Length, mm

thickening of the Le- 20,3

seal Land- 103,7

The empirical coefficient

- a - 2,88

- b - 0,33

The angular shift , rad - 0,34

Diameter, mm thickening of the de- 0,99

seal dand- 0,51

The ratio of the fill ratios of the cross sections of the fiber Ke/Kand- 0,27

4. The number of runic in yarn

m - 3

5. Comenta mixed flax-containing yarn, developed a hardware system spinning wool on tobacco machines brand PSU-SG.

1. The structure and composition of runic, %

1 thread: 1 rovings

Cotton - 50

Flax - 30

Wool - 20

2 rovings

PAN - 100

2 thread: 1 rovings

PAN - 100

2. Basic physical and mechanical properties of the wool

2.1. Linear density, Tex

Wool - 0,65

2.2. Average length, mm

Wool - 60

2.3. Specific breaking load of single fiber, cH/Tex

wool - 15,6

2.4. Normal humidity, %

Coat - of 14.4

2.5. The modulus of elasticity of the second kind, g cm2( 10-8)

Wool - 111

Basic physical and mechanical properties of fibers of cotton, flax, PAN similar to that shown in example 1.2.

3. Process chain.

Three (cotton-flax-wool) rovings obtained by the apparatus and spinning wool. Cleaning and loosening of flax, wool and cotton are produced separately. Flax feeder brand P-1 is on dialno-sizing machine brand S-S, then in the dispenser brand DB for mixing with other components. Cotton feeder brand P-1 is the dispenser of mark DB. Wool machine is treated with an antistatic agent brand OP-20 and sizing consisting of 28% of the lubricant grade B-73 and 72% of water, and then the dispenser brand DB. Next, flax, wool and cotton mix two transitions in mixed car brand S-12. The resulting mixture of fibers passes the operation of scratching on dwprocessid Assembly firm "Befana", adding and pulling on the two transitions tape machines brand LMS-220 and brand LMS-220-AT and predopredeny machines brand R-192-I.

Obtaining homogeneous (100% PAN) Rove is in the processing chain described in example 1.2. Yarn is produced by spinning tobacco machines brand UCS-225-WD. The resulting yarn is subjected to wet-heat processing on machine brand "Shakira-Murat".

3. Physico-mechanical and geometrical characteristics of the yarn:

The linear density of the total R, Tex - 70

Relative tensile load P, cH/Tex - 8,6

breaking elongation , % - 11,21

the number of turns on the half-period K, CR - 14

The coefficient of variation

linear density Cvt, % - 8,7

on discontinuous density Cvp, % - 12,9

on razryvnaya elongation Cv, % - 17,6

the number of turns Cvto, % - 15,1

Residual shrinkage, % - 0,88

Normal humidity, W, % - 3,7

Weighted average d
The empirical coefficient

- a - is 3.08

- b - 0,27

The angular shift , rad - 0,27

Diameter, mm thickening of the de- 0,95

seal dand- 0,48

The ratio of the fill ratios of the cross sections of the fiber Ke/Kand- 0,26

4. The number of runic in yarn

m - 3

5. The component composition of the yarn, %

Cotton - 13

Len - 8

Wool - 5

PAN - 74

Example 4.2. Tobacco and three-component mixed flax-containing yarn produced by carding the cotton spinning on tobacco machines brand UCS-SG.

1. The structure and composition Rove, %

1 thread: 1 rovings

Flax - 30

Cotton - 70

2 rovings

PAN - 100

2 thread: 1 rovings

Flax - 30

Cotton - 70

2 rovings

PAN - 100

2. The main physico-mechanical parameters of the mixture components similar to that shown in example 1.2.

3. Process chain.

Two-component (cotton linen) rovings obtained by the processing chain described in example 2,2. Obtaining homogeneous (100% PAN) Rove is in the processing chain described in example 1.2. Yarn is produced by spinning tobacco machines brand UCS-225-WD. The resulting yarn biomatrices characteristics of yarn:

The linear density of the total R, Tex - 120

Relative tensile load P, cH/Tex - 8,5

Breaking elongation , % - 17,5

The number of turns in half, cu - 15

The coefficient of variation for

linear density Cvt, % - 6,9

on the breaking load Cvp, % - 9,3

on razryvnaya elongation Cv, % - 7,2

the number of turns Cvto, % - 12,6

Residual shrinkage, % - 0,21

The normal moisture content W, % - 4,9

The weighted average fiber length Lcf. centurymm - 49

Length, mm thickening of the Le- 22,4

seal Land- 102,6

The empirical coefficient

- a - 2,19

- b - 0,34

The angular shift , rad - 0,27

Diameter, mm thickening of the de- 1,41

seal dand- 0,76

The ratio of the fill ratios of the cross sections of the fiber Ke/Kand- 0,29

4. The number of runic in yarn

m - 4

2. The component composition of the yarn, %

Cotton - 38

Flax - 15

PAN - 47

To study the basic properties of the proposed yarn was used devices and methods defined by the following Standards.

1. Climatic conditions for textile products was carried out according to GOST 10681-75.

2. Sampling yarn was carried out according to GOST 6611.0-73.

In table 1 except for the basic physical and mechanical properties of the known yarn, THE normalized, a number of parameters entered by the applicant to characterize the structure of the proposed yarn. The analysis of these indicators leads to the conclusion that this yarn has no structural shapes effect either in the longitudinal or in the transverse cross-section. In longitudinal section of yarn concerning fill factor of the cross section of the fiber Ke/Kand= 0,89 - 0,96 due to the constant cross-sectional diameter of the yarn d = const = 0 34 - 0.53 mm, i.e., the yarn has no ledges, respectively, the empirical coefficient a = ~, the length of the thickened area Le= 0. Cross-sectional yarn of the same characteristic point of spins on the surface of runic forming the thread, are at the same angle to the axis OnOpi.e. no angular shift = 0, and the empirical coefficient b = 0.

We offer high-volume yarn is produced from a mixture of heterogeneous components, the basic physical and mechanical properties are presented in table 2. It should be noted that such properties of the fibers, as the stiffness, length, fineness have a significant impact on p is Oh and stiffness of the fibers extruded into the shell, and thin and long fibers with lower rigidity are located in terminal, as well as on the strength properties of the yarn. The use of natural fibers, having high hygroscopicity, can improve the consumer properties of the products of the suggested yarn.

The number of cases of mixtures using purified short of nicknaming flax (CVNL) is large enough, the main, practically used, is presented in table 3. High volume yarn obtained by a combination of mixed (using CVNL) and homogeneous ravnic, the variants of all combinations are also presented in table 3.

Analysis of physico-mechanical properties of high-volume mixed flax-containing tobacco yarn, shown in table 4, shows that they meet the standards envisaged THAT, as the yarn is shaped structural effect in both longitudinal and transverse section.

What flax-containing yarn of options considered fit into the norms envisaged THAT, due primarily to the final content of the purified short of nicknaming flax into yarn, which for all these variants is 8 to 15% and thereby Swayne, the content of which the mixed yarn is prevalent.

High-volume three-component yarn of two threads, each of which consists of one Rove (option 1) with a linear density of 30 - 90 Tex, which indicates the range expansion of linear density, has physical and mechanical properties that meet the standards SPECIFICATIONS. Thus, the relative tensile load is 5,8 - 6,7 cH/dtex, a breaking elongation of 9.5 - 9.8 percent, the number of turns on the half - 15 - 19 cu when the coefficient of variation for linear density of 8.6 and 9.7%, the breaking load - 9,9 - 10,9%, razryvnaya removal of 11.2 - 12.5%, and the number of turns is 13.4 and 14.6%; residual shrinkage of 0.47 - 0,61%. The normal moisture content of the yarn of 4.1%, which indicates the improvement of consumer properties.

This yarn has shaped structural effect in the longitudinal section in the form of ledges with a diameter of 0.54 - 1,13 mm and a length of 20 - 21,4 mm when the value of the empirical coefficient a = 2,62 - 2,70 and compacted areas with a diameter of 0.33 - 0.64 mm and a length 101,6 - 103 mm with respect to the fill factor of the fiber sections 0,27 - 0,37, i.e., the ratio of the diameters thickened and compacted areas constantly, and in cross-section, which is manifested in the presence of angular shift of od is empirical coefficient b = 0,33 - 0,36 and the presence of medullary and obviose layers in the mixed roving.

High-volume three-component yarn of the two threads, it consists of two runic (option 2) linear density of 40 - 80 Tex, has physical and mechanical properties that meet the standards SPECIFICATIONS. Thus, the relative breaking load of 6.1 to 8.2 cH/dtex, a breaking elongation of 10.3 - 11.9 percent, the number of turns on the half-cycle - 13 - 16 cu when the coefficient of variation for linear density of 8.2 and 9.1%, the breaking load of 11.7 - 12.9 percent, razryvnaya elongation - from 12.8 to 13.6%, the number of turns - 14,3 - 14,8% residual shrinkage of 0.79 to 0.97%. The normal moisture content of the yarn is 3.4%, which indicates the improvement of consumer properties.

This yarn has shaped structural effect in the longitudinal section in the form of ledges diameter of 0.61 - 0,99 mm and a length of 18.8 - 20.3 mm when the value of the empirical coefficient a = 2,88 - 3,11 and compacted areas with a diameter 0.34 - 0.51 mm and a length of 103,7 - of 105.2 mm with respect to the fill factor of the fiber sections of 0.26 - 0.31 in, i.e., the ratio of the diameters thickened and compacted areas constantly, and in cross-section, which is manifested in the presence of angular shift of the same characteristic points twist on a surface the CSOs and obviose layers in the mixed roving.

High-volume four-yarn of two threads, one of which consists of two runic (option 3) linear density of 40 - 100 Tex, which indicates the range expansion of linear density, has physical and mechanical properties that meet the standards SPECIFICATIONS. Thus, the relative tensile load is 5.9 - 8,9 cH/dtex, a breaking elongation is 10.2 to 11.2%, the number of turns on the half-cycle - 13 - 16 cu when the coefficient of variation for linear density of 7.9 and 9.3%, the breaking load is 12.2 - 13.4 per cent, razryvnaya elongation - to 14.9 - 18.1 percent, according to the number of turns - of 14.3 to 15.1%, the residual shrinkage 0,72 - 0,88%. The normal moisture content of the yarn is 3.7%, which indicates the improvement of consumer properties.

This yarn has shaped structural effect in the longitudinal section in the form of ledges with a diameter of 0.56 - 1,32 mm and a length of 18.5 - 20,4 mm, when the value of the empirical coefficient a = 2,93 3.21 - in and compacted plots in diameter at 0.31 - 0.64 mm and a length of 103,5 - 104,6 mm with respect to the fill factor of the fiber sections 0.24 to 0.31 in, i.e., the ratio of the diameters thickened and compacted areas constantly, and in cross-section, which is manifested in the presence of angular shift of the same characteristic points of the twist at the surface is smooth the nogo obviose layers in the mixed roving.

High-volume three-yarn of two threads, each of which consists of two runic (option 4), the linear density of 80 - 180 Tex, which indicates the range expansion of linear density, has physical and mechanical properties that meet the standards SPECIFICATIONS. Thus, the relative tensile load is 6,0 - 8,5 cH/dtex, a breaking elongation to 15.8 18.1 per cent, the number of turns on the half-cycle - 13 - 16 cu when the coefficient of variation for linear density of 5.6 - 8.4%, and on the breaking load of 9.3 to 14.6%, razryvnaya elongation - to 7.2 - 17.1%, for the number of turns for 12.6 to 15.4%, the residual shrinkage - 0,16 - 0,89%. The normal moisture content of the yarn of 4.9%, which indicates the improvement of consumer properties.

This yarn has shaped structural effect in the longitudinal section in the form of ledges diameter of 0.98 to 1.76 mm and length 22,1 - 24,4 mm when the value of the empirical coefficient a = 2,0 - 2,19 and compacted areas with a diameter of 0.61 - 0.87 mm and a length 100,6 - to 102.9 mm with respect to the fill factor of the fiber sections of 0.25 to 0.39, i.e., the ratio of the diameters thickened and compacted areas constantly, and in cross-section, which is manifested in the presence of angular shift of the same characteristic points of spins on the surface of runic, with whom and about obviose layers in the mixed roving.

Use the suggested yarn as weft in weaving provides the original appearance of the resulting fabric has the effect of "momodani", i.e. has a "hairy" appearance, resembling the effect of hand weaving.

Thus, the obtained high-volume mixed flax-containing tobacco yarn has shaped structural effect, manifested in the presence of thickened and compacted plots, in the presence of angular shift between the same characteristic points of the twist on the surface of runic forming the yarn when changing the fill factor of the cross section of the fiber, in the presence of core and shell in the mixed roving, original colour effect in the yarn while maintaining the quality indicators.

1. Yarn high volume, consisting of yarns with alternating twist, characterized in that in the longitudinal cross-section of the yarn is interlaced thickened sections of length Leand compacted plots of length Landwhile Le= Lcf. in/a, where a is an empirical coefficient, Lcf. in- the average length of the fiber mixture, mm, Land= L - Le, where L is the period length, mm, and thick sections are angular shift between ozincovannuju = b/m, where b is an empirical coefficient, m is the number of runic in the yarn, the ratio between the fill factor of the cross section of the fiber thickened parcel TOeand the fill factor of the cross section fiber of the compacted plots TOandis TOe/Kand= 0,24 - 0,39.

2. Yarn high volume under item 1, characterized in that one of the threads is a mixed rovings from natural short staple fibers with an average length of 48 mm and a linear density of no more than 0.2 dtex, for example cotton, natural, long staple fibers with an average length of not more than 70 mm and a linear density of no more than 0.67 Tex, for example short purified flax, and chemical staple fibers with an average length of not more than 70 mm and a linear density of no more than 0.33 Tex, for example polyacrylonitrile, and consists of a core and a shell, the other thread is a rovings of chemical staple fibers with an average length of not more than 70 mm and a linear density of no more than 0.33 Tex, for example polyacrylonitrile, and the empirical coefficient a is equal 2,62 - 2,70, average length Lcf. infibers of the mixture is equal to 54 - 56 mm, the number m of runic of the yarn is equal to 2, and the empirical coefficient b is equal to 0,33 - s which is a mixed rovings from natural short staple fibers with an average length of 48 mm and a linear density of no more than 0.2 dtex, for example, cotton, natural, long staple fibers with an average length of not more than 70 mm and a linear density of no more than 0.67 Tex, for example flax, and natural long staple fibers with an average length of not more than 65 mm and a linear density of no more than 0,88 Tex, for example wool, and consists of a core and a shell, and the other rovings made of chemical staple fibers with an average length of not more than 70 mm and a linear density of no more than 0.33 Tex, for example polyacrylonitrile, the other thread is a rovings of chemical staple fibers with an average length of not more than 70 mm and a linear density of no more than 0.33 Tex, for example polyacrylonitrile, and the empirical coefficient a is equal 2,88 - 3,21, average length Lcf. infibers of the mixture is equal to 58 - 60 mm, the number m of runic in the yarn is 3, and the empirical coefficient b is equal to 0.27 and 0.35.

4. Yarn high volume under item 1, characterized in that each thread consists of two runic, one of which is a mixed rovings from natural short staple fibers with an average length of 48 mm and a linear density of no more than 0.2 dtex, for example cotton, natural, long staple fibers with an average length of not more than 70 mm and linganamakki staple fibers with an average length of not more than 70 mm and a linear density of no more than 0.33 Tex, for example polyacrylonitrile, while the empirical coefficient a is equal to 2.0 - 2,19, average length Lcf. infibers of the mixture equal to 48.4 - 49,0 mm, the number m of runic in the yarn is 4, and the empirical coefficient b is equal to 0.31 in - 0,34.

 

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The invention relates to a method for malousadochni thread, especially for sewing thread made of synthetic polymer preorienting filament yarn
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