JP7191836B2 - Core yarns having core yarns with different draws, and fabrics obtained from the core yarns - Google Patents

Description

The present invention relates to core yarns and fabrics obtained from these yarns in the field of textiles. Specifically, the present invention relates to core yarns having yarns of different drawing in the core portion, methods of obtaining said core yarns and fabrics made from said yarns.

Yarns of various qualities are nowadays used in woven and knitted fabrics in order to obtain different appearances and different properties. By varying the properties of the yarn, different visual effects are obtained in the woven or knitted structure and the properties of the fabric are improved.

In standard yarn production, process steps such as threshing, carding, cresting, traction, roving, and spinning are applied. The formed yarn cord is attenuated in a ring yarn device and wound into a usable yarn after being wound. This yarn production method yields woven and knitted yarns.

In the prior art, core yarns are produced that have yarns that do not contain core yarns or separate yarns. The core yarn comprises at least one filament yarn and at least one elastane yarn made of recycled or synthetic materials during the spinning process of natural fibers (such as cotton), recycled fibers, synthetic fibers, or combinations thereof. or by supplying only at least one elastane yarn to the yarn core.

Threads that exhibit constant elongation properties when pulled with any force and return to their original state when the pulling force is removed are made of polyurethane elastomers and are called elastane. The elastane yarn itself cannot be used, it is used together with the main yarn as an auxiliary yarn in the fabric.

Currently, elastane yarns are commonly used in circular knitting machines. The use of elastane yarns is more common, especially in fine circular knitting machines. These include single jersey, rib knit, interlock, ringer, electronic jacquard and mini jacquard circular knitting machines. The elastane yarn is used as it is with the base yarn of the circular knitting machine, and is also used as the backing yarn.

In the prior art, only elastane and/or filament yarn feeding is performed by fixed drawing in standard core yarn production and no variation can be provided during the elastane/filament yarn feeding. Elastane and filament yarns are fed to the yarn core by rotation of rollers that drive reels on which the yarns are wound. Due to the fixed rotational speed of said rollers, the elastane and filament yarns also flow (with a given fixed draw) at a fixed speed. In core yarn production, the elastane and filament yarn feeds during yarn production can continue at the same speeds used for the elastane and filament yarn feeds at the start of production. In this way, during yarn production, the elastane and filament yarns are fed to the yarn hub with constant tension.

Improvements regarding known problems in the prior art are presented below.

EP-A-2 452 002 B1 relates to "Core yarn production apparatus and method for producing same". The apparatus of the invention comprises first and second pairs of unwind rollers. These rollers are arranged in series at a constant distance from each other in the horizontal direction and are driven. Before the core filament enters the mil spinning process, the core filament is deflected twice by unwinding from the core filament bobbin so that swing in the core filament is reduced as a result. , first and second deflection rollers are positioned on the head of the core filament bobbin.

EP 2 329 067 B1 relates to "monitoring method and apparatus for use in the production of core yarns". The monitoring device of the invention comprises a separating device located at the entrance of the tentering mechanism and used to interrupt the supply of fibers to the tentering mechanism according to the tentering level of the filaments, the separating device comprising: It has a back deflection reel for deflecting (reversing) the filament and a front deflection reel which is positioned in the tentering mechanism at an oblique angle to the feed roller and is used to deflect the filament.

The state-of-the-art Japanese Patent Application Publication No. 200080527 relates to a method for producing composite yarns and a spinning machine therefor. The yarn produced can have different regions with different numbers of turns.

The state-of-the-art publication WO2012062480 relates to core yarns having elastic yarns and control filament yarns in the core portion.

US Patent Application Publication No. 3,350,867 discloses a process and apparatus for making novel yarns. However, the yarn does not contain an elastic core.

US Pat. No. 3,053,040 discloses a method and apparatus for priming core yarns. The roll feeds the core element at constant speed.

International Application Publication No. WO2012001632 discloses a device for operating and programming a ring spinning frame. The device can be used to program the initial spinning profile.

Consequently, due to the inadequacies of the aforementioned problems and the current solutions to them, it is believed that improvements are needed in the art.

The present invention relates to core yarns having core yarns with different draws and to fabrics made with such core yarns. The core yarn satisfies the aforementioned requirements, overcomes all the drawbacks and offers several advantages.

The main object of the invention is to be able to create different visual effects in woven and knitted fabrics.

The present invention aims at developing woven and knitted fabrics obtained from core yarns with elastane yarns and/or filament yarns, wherein a non-fixed draw is applied to the core of said core yarns.

It is an object of the present invention to feed the elastane yarn and/or the filament yarn to the yarn core at different speeds during the production of the core yarn.

It is a further object of the present invention that the elastane yarns and/or filament yarns supplied to the core of the core yarn have different drawing values.

Another object of the invention is to make it possible to obtain different visual effects (pattern designs) in woven and knitted fabrics with the core yarn.

Yet another object of the present invention is to provide a yarn with a slub effect.

To achieve the above objects, the present invention provides a core yarn obtained from fibers that are natural fibers, regenerated fibers, synthetic fibers, or a combination thereof, wherein the core portion comprises:
at least one elastane yarn containing regions with different draw values applied; and/or
at least one filament yarn made of recycled or synthetic material, comprising regions with different draw values applied;
have

To achieve the objectives of the present invention, said regions have different lengths and densities along the elastane yarn and/or filament yarn, or said regions have the same length and density along the elastane yarn and/or filament yarn. It can have length and density. Density is used here to mean the tex of elastane within a unit yarn.

In order to achieve the object of the present invention, the core yarn production method comprises:
preparing fibers, which may be natural, regenerated, synthetic, or a combination of these fibers, for a spinning process and roving into a cord;
applying a spinning process to the resulting cord;
supplying at least one filament yarn composed of recycled or synthetic material or at least one elastane yarn during the spinning process to the core portion of the cord to be drawn at different draw values;
applying twist and winding to the bobbin;
including.

In order to achieve the object of the present invention, a yarn spinning device enabling the application of the core yarn production method after the roving process, comprising:
a supply unit;
The drawing section includes back, middle, and front drawing rollers that are arranged in succession, a back sleeve positioned on the back drawing roller, a middle sleeve positioned on the middle drawing roller, and the front the drawing section comprising a front sleeve located on the drawing roller;
a twisting yarn and a winding part;
with
The yarn spinning device comprises:
an elastane yarn drive roller, the elastane yarn reel attached to the elastane yarn drive roller and providing a supply of elastane yarn to the drawing section; The elastane yarn drive roller and/or the drawing yarn, comprising a drive motor and inverter capable of varying the speed of the roller, and a data entry screen into which a speed value corresponding to the length of the elastane yarn is entered. a filament yarn drive roller for providing a supply of filament yarn to a unit; a drive motor and inverter for providing motion to said filament yarn drive roller and capable of varying the speed of said filament yarn drive roller; a data input screen where a speed value corresponding to the length is entered;
Prepare.

In order to achieve the object of the present invention, the spinning device comprises an elastane yarn driving roller that supplies an elastane yarn between a front drawing roller and a front sleeve during drawing, and a front drawing roller during drawing. and a filament yarn drive roller for feeding the filament yarn between the front sleeve and the front sleeve.

The structural and characteristic features of the present invention, together with all its advantages, will be more clearly understood from the figures provided below and the detailed description with reference to those figures. Therefore, it should be evaluated in view of these figures and the detailed description.

1 is a representative schematic representation of a spinning apparatus making it possible to obtain core yarns of the invention with core yarns at different draws; FIG.

The figures are not necessarily to scale and may omit details that are not necessary for an understanding of the invention. Also, elements that are at least mostly the same, or elements that have at least the same function, are labeled with the same reference numerals.

In order to understand the problem more clearly, this detailed description non-limitingly describes a core yarn with a core yarn with different draws according to the present invention and the fabric obtained from the core yarn and its preferred structure. .

The present invention provides a core yarn obtained from natural fibers (cotton, etc.), regenerated fibers, synthetic fibers, or a combination thereof, wherein the core portion comprises:
at least one elastane yarn (30) comprising regions with different draw values applied; and/or
at least one filament yarn (20) made of recycled or synthetic material, comprising regions with different draw values applied;
have

Said regions with different draw values applied can have different lengths and densities along the elastane yarn (30), or they can have the same lengths and densities. Said regions can have different lengths and densities along the filament yarn (20), or they can have the same length and density. When the elastane yarn (30) and the filament yarn (20) are used together, the elastane yarn (30) and the filament yarn (20) have areas to which the same or different draw values are applied, and the same Or they can have different lengths.

The core yarn of the present invention comprises, during the spinning process, at least one filament yarn (20) obtained from regenerated or synthetic materials and/or at least one elastane yarn (30) combined with natural fibers (such as cotton). ), regenerated fibres, synthetic fibres, or a combination of these fibres. Said fibers are prepared for the spinning process by applying process steps such as threshing, carding, cresting, traction, roving, etc. respectively to natural fibers, regenerated fibers, synthetic fibers, or combinations thereof. .

Within the scope of the present invention, generally pes and pbt filaments are primarily preferred. However, filament threads (20) made of different materials can also be used. The type of filament yarn (20) is related to the area of use of the final fabric. Here, material refers to the raw material from which the filament yarn (20) is made. These raw materials are cellulose-based plant materials obtained by artificial methods or materials obtained by regeneration of chemical-based materials (such as petroleum).

The core yarn production method of the present invention generally comprises the following process steps:
preparing fibers, which are natural fibers, regenerated fibers, synthetic fibers, or combinations thereof, for a spinning process and roving into cords (10);
applying a spinning process to the resulting cord (10);
During the spinning process, the cord (10 ) and supplying to the core portion of
applying twist and winding to the bobbin;
including.

The core yarn of the present invention is obtained by applying the process steps of threading, carding, cresting, traction, roving, and spinning, respectively, to fibers consisting of natural fibers, regenerated fibers, synthetic fibers, or combinations thereof. . Thereafter, during the spinning process, a filament yarn (20) obtained from recycled or synthetic material is fed to the yarn core together with one or several elastane yarns (30). Said fibers are prepared for the spinning process by applying process steps such as threshing, carding, cresting, traction, roving, etc. respectively to natural fibers, regenerated fibers, synthetic fibers, or combinations thereof. .

Regarding the fabric of the present invention, firstly, the weight, elastic stretchability, and recovery properties that the fabric should have are determined by the place of use. After that, depending on the weight, the number of threads used to obtain the fabric is determined. For example, for a fabric with a weight of 320 gr/m ² , a core yarn of 20/1 is selected as the final yarn number. Then, depending on the composite value selected depending on the place of use, the type of filament thread (20) (pes, nylon, pbt, floss viscose, etc.), the thickness of the filament thread (20) used and the number of threads in the core (one, two or more filament threads (20) depending on the desired composite value) are determined. Similarly, the type of elastane (30), the thickness of the elastane, and the number of threads in the core (1 elastane yarn (30) depending on the desired composite value, depending on the stretchability value chosen by the site of use). , or two or more) are determined. The production of core yarns used in the manufacture of fabrics is carried out according to the weight, stretchability and recovery characteristics of the fabric, the number of yarns used in the manufacture of the fabric, the filament yarns used in the core ( 20) and the type of elastane yarns (30), their thickness and the number to be used are determined. The formed yarns are used to produce fabrics with fabric widths, fabric weights, and machine settings suitable for the desired circular knit construction (interlock, rib knit, single jersey, etc.) suitable for the garment industry or flat knit garment industry. or as textiles, which are then subjected to a dyeing process.

The core yarn spinning apparatus of the present invention allows application after the fibers, which may be natural, regenerated, synthetic, or combinations thereof, have been prepared for the spinning process and made into cords (10). and
a supply unit;
Renjoubu and
a twisting yarn and a winding part;
with
in the supply section,
a warping creel on which the cord and filament yarn bobbins (11, 21) are attached;
a drive roller (22) that allows unwinding and flowing of the filament yarn (20);
a drive motor (50) and an inverter (60) that can drive the filament yarn drive roller (22) and change the speed of the drive roller (22);
a data input screen (40) for inputting a speed value corresponding to the length of the filament yarn (20);
a filament thread (20) guide;
a filament yarn (20) guide pipe;
a drive roller (32) on which an elastane yarn reel (31) is mounted to allow unwinding and flow of the elastane yarn (30);
a drive motor (50) and inverter (60) for driving the elastane yarn drive roller (32) and capable of varying the speed of the drive roller (32);
a data entry screen (40) for entering a speed value corresponding to the length of the elastane yarn (30);
an elastane thread (30) guide;
a separator for separating the plurality of elastane yarn reels (32) from each other;
an elastane yarn (30) sensor and a filament yarn (20) sensor;
a textile cord stopper that stops the flow of the cord (10) in the event of a breakage of the elastane yarn (30) and the filament yarn (20);
a display screen;
is provided.
In the training department,
back, middle and front draw rollers (70, 80, 90) arranged in succession;
a back sleeve (91) (printing roller) located on said back drawing roller (90);
a middle sleeve (81) (printing roller) positioned on the middle drawing roller (80);
a front sleeve (71) (printing roller) positioned on the front drawing roller (70);
is placed and
It allows the attenuation and straightening of the cords (10) in the spinning process.
At the twisting and winding part,
an eyelet (101) (pigtail);
a separator (102);
an antibalon collet (103);
a cup (100);
a block (104);
is provided.

A cord (10) comprising the core yarn main material of the present invention is wound around a cord bobbin (11). The filament yarn (20) is a material that is supplied to the main material during the spinning process to give it elasticity, durability and cohesion, and is wound on the filament yarn bobbin (21). The elastane yarn (30), on the other hand, is a material that is supplied to the main material during the spinning process to give it elasticity and is wound on the elastane yarn reel (31). Cord bobbins (11) and filament yarn bobbins (21) are attached to respective portions of the bank creel section of the supply and elastane yarn reels (31) are attached to drive rollers (32). . The cord (10) supplied from the cord bobbin (11) to the drawing section is fed by a back drawing roller (90), a middle drawing roller (80) and a front drawing roller which are arranged in succession in the section. (70), through the back sleeve (91), the middle sleeve (81) and the front sleeve (71), through the strip and attenuate. On the other hand, the elastane yarn (30) and/or the filament yarn (20) are also fed between the front drawing roller (70) and the front sleeve (71) and removed via the cord (10). During said drawing process, the elastane yarn (30) and/or the filament yarn (20) are not fed at a constant speed. As a result, different draw values are applied to the elastane yarn (30) and/or the filament yarn (20). Depending on the desired length, the value of the feed rate of the elastane yarn (30) and/or the filament yarn (20) varies. Elastane yarn (30) data entry screen (40), elastane yarn (30) drive motor (50) and elastane yarn ( 30) An inverter (60) has been added to the spinning device. Similarly, a filament yarn (20) data entry screen (40), a filament yarn (20) drive motor (50), to provide speed variation as a function of length for the filament yarn (20); A filament yarn (20) and an inverter (60) have been added to the spinning apparatus. The data entry screen (40) is a screen where the designed yarn length and the speed value corresponding to this length are entered. The values obtained therefrom are transmitted via an inverter (60) to the drive motor (50), and the movement of the drive rollers (22, 32) is varied as desired. The inverter (60) sends commands obtained from the data entry screen (40) to the drive motor (50) to vary the feed rate of the elastane yarn (30) and the filament yarn (20). A drive motor (50) varies the speed of the elastane and filament yarn drive rollers (32, 22) according to commands received from an inverter (60). Accordingly, elastane yarns (30) and/or filament yarns (20) with varying draw values are fed to the hub of the spinning cord (10). Preferably, a servomotor is used as drive motor (50).

Elastane yarns (30) and/or filament yarns (20) are fed into the core of the cords (10) and the final core yarn is obtained by applying a twisting and winding process to the cords (10). The yarn obtained is wound on a cop (100). A cop (100) is a bobbin around which the spun yarn is wound. As the spun yarn is wound on said cop (100), it passes through an eyelet (101) that guides the yarn.

In the prior art, in the production of core yarns, elastane and filament yarn (30, 20) streams are provided at a constant speed (predetermined fixed drawing). The reason for this is that it is desirable for the fabric to have similar elasticity at all points. In the prior art, the drive rollers (32, 22) that provide the flow of elastane and filament yarns (30, 20) cannot be accelerated or decelerated. In this mechanism, a servomotor (50) connected to a data entry screen (40) through an inverter (60) is located in the yarn spinning device to provide speed variation. An additional servo motor (50) instantly increases or decreases the feed rate by rotating the elastane and filament yarn drive rollers (22, 32) at different speeds on command received from the data entry screen (40). Let The front drawing roller (70) and the front sleeve (71) to which the elastane yarn (30) and the filament yarn (20) are fed are fed at different speeds so that the elastane and filament yarns (30, 20) are fed at different speeds. The supply of is offered with different tactical values.

By applying different tensions, areas with different draw values are obtained. Depending on the degree of tension, the regions can have the same or different lengths and densities.

The present invention aims at producing a core yarn comprising regions of different elasticity and knitted and woven fabrics made from this yarn. Therefore, it is possible to achieve effects that have not been realized so far.

According to the invention, elastane yarns and filament yarns (30, 20) supplied in the production of core yarns are provided to the yarn hub with different drawing variations. In current core yarn systems, elastane yarns and filament yarns (20, 30) are fed into the system with one single draw value given at the start of production. According to the invention, these draw values can be arranged within the desired length range.

In current applications, the elastane yarn drive roller (32) and filament yarn drive roller (22) rotate at a constant speed. According to the invention, the elastane yarn drive roller (32) and the filament yarn drive roller (22) are driven at different speeds by means of a data entry screen (40), an inverter (60) and a servo motor (50) integrated in the spinning device. can be rotated. Thus, elastane yarns and/or filament yarns (30, 20) with different tensions are fed out on payout, so that the production of core yarns with different drawing values can be achieved. Data are entered into the data entry screen (40) to rotate at different speeds and rotational positions, these data are sent to the servo motor (50) via the inverter (60), and the drive rollers (22, 32) can be varied. Thus, it is provided to supply elastane yarns and/or filament yarns (20, 30) with different densities. As a result, core yarns with elastane yarns and/or filament yarns (20, 30) with different take-off values are produced, which can be knitted or woven to achieve the production of three-dimensional fabrics. can.

1 cord 11 cord bobbin 20 filament yarn 21 filament yarn bobbin 22 filament yarn driving roller 30 elastane yarn 31 elastane yarn reel 32 elastane yarn driving roller 40 data input screen 50 drive motor 60 inverter 70 front drawing roller 71 front sleeve 80 middle drawing roller 81 middle sleeve 90 back drawing roller 91 back sleeve 100 cup 101 eyelet 102 separator 103 antibaron collet 104 block

Claims (2)

Spinning, twisting, and winding processes are applied to the cord (10) obtained through the roving process, and at least one cord having a plurality of regions having different lengths and densities along the yarn. an elastane yarn (30) and/or a core portion comprising at least one filament yarn (20) made of recycled or synthetic material with a plurality of regions of different lengths and densities along the yarn; A spinning apparatus for producing a core yarn having
a supply unit;
A drawing section, which is located in a back drawing roller (90), a middle drawing roller (80), a front drawing roller (70) and the back drawing roller (90) arranged in succession. said drawing section comprising a back sleeve (91), a middle sleeve (81) positioned on said middle drawing roller (80) and a front sleeve (71) positioned on said front drawing roller (70); ,
a twisting yarn and a winding part;
with
The yarn spinning device comprises:
an elastane yarn drive roller (32), an elastane yarn reel (31) attached to said elastane yarn drive roller (32) and providing a supply of elastane yarn (30) to said drawing station; and said elastane yarn drive. A drive motor (50) and an inverter (60), which provide motion to the roller (32) and can vary the speed of the elastane yarn drive roller (32), and, depending on the length of the elastane yarn (30), said elastane yarn drive roller (32); 22), a drive motor (50) and an inverter (60) for providing motion to said filament yarn drive roller (22) and capable of varying the speed of said filament yarn drive roller (22), and said filament yarn. a data input screen (40) for inputting a speed value corresponding to the length of (20);
comprising
Device. an elastane yarn driving roller (32) that supplies the elastane yarn (30) between the front drawing roller (70) and the front sleeve (71) in the drawing section;
a filament yarn drive roller (22) that supplies the filament yarn (20) between the front drawing roller (70) and the front sleeve (71) in the drawing section;
comprising
A device according to claim 1 .

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