JPS5936684B2 - Molle yarn manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a mole yarn that is flexible, has good touch coverage, and has high gloss.

Furthermore, it is an object of the present invention to provide a method for producing a flexible malleable yarn with bulky properties that is resistant to shedding.

The term "molle yarn" as used in the present invention refers to a filament-like material in which two or more ground yarns hold "hana yarn" which is a raised yarn.

Therefore, the surface of the yarn appears to be covered with raised fluff.

Conventionally, fibers that are as straight and thick as possible have been used for ``Hana-Ito'' to prevent the ``Hana-Ito'' from sagging and to emphasize the depth of color due to the velvet effect.

However, in this case, the covering properties of the "hana thread" are poor, and the ground thread appears to be missing, and the touch feels rough and hard.

The molle yarn itself is too hard and is not suitable for high-end uses such as clothing.

The present invention provides a method for manufacturing a molle yarn that does not have such drawbacks, and is concerned with a method for manufacturing a molle yarn that has good covering properties, is soft to the touch, and is highly durable and does not easily come off. be.

The present invention is a latent crimped fiber, which is a latent crimped fiber, and is a three-dimensional crimped fiber that can be divided into small pieces. The main idea is to adjust the curling of the coil appropriately depending on the purpose, and improve coverage, prevention of sagging, flexibility of touch, and durability.

To explain the present invention more specifically, the present invention uses synthetic latent crimped fibers as the "hana yarn".

The fiber form may be either filament or stable.

Either the latent shrinkage fibers can be processed into "hana thread" after developing the shrinkage, or they can be processed into "hana thread" in a state before the development of shrinkage, and then the fibers can be made to develop the shrinkage. You can get it.

The latent shrinkage fibers to be used include those that can exhibit shrinkage by combining different types of polymers, such as eccentric composite fibers;
It may be possible to cause structural shrinkage due to side abrasion, or a combination thereof.

Alternatively, it may be a multicore composite fiber whose core has an eccentric composite structure, such as one that can undergo shrinkage after being subdivided.

The fibers used for the "hana yarn" contain such latent crimped fibers and can be used in the form of filaments or stable fibers.

When using the yarn, any suitable method can be used, such as processing the latent shrinkable fibers in a state that causes the shrinkage to occur, or allowing the shrinkage to occur during or after processing, but in general, it is possible to It is better to let the shrinkage develop.

Such a maul yarn processing method may be easily carried out using the apparatus described in, for example, Japanese Patent Publication No. 53-6642.

In the present invention, three-dimensional crimping refers to fibers that are crimped in a coil or spiral shape like latent crimped fibers, and two-dimensional or quasi-three-dimensional planar crimping to obtain ordinary staple fibers. It is different from the form.

The characteristics of using such latent shrinkable fibers in the present invention are as follows:
The covering properties of "Hanaito" are improved, and the cut edges are not sharp and have a natural softness and mellowness.
One example of this is that it can alleviate the unpleasant luster that occurs when synthetic fibers are used.

In addition, in the case of quasi-three-dimensional shrinkage by ordinary mechanical shrinkage, the effect of the present invention can be increased by making the degree of shrinkage extremely large, and even in the case of quasi-three-dimensional shrinkage by 20% mechanical shrinkage, by taking special conditions. There are cases.

For example, the degree of contraction is more effectively 60% than 30% to 50%.
This is the case.

Such pseudo three-dimensional shrinkage may be considered part of the present invention.

However, such conventional means are not common because of the problem of process passability.

On the other hand, even if a real weave yarn is used as the "hana yarn", the real twist may become unraveled in the process after maul yarn processing, increasing the effect of the present invention.

For example, in the case of filament, the twist coefficient k is
The number of J (times/m) and the thread thickness (tex) are T = kJ61
If the twist coefficient k is 50 or more, it can be regarded as the three-dimensional crimped fiber of the present invention.

This effect is particularly great when the "hana thread" is made of ultra-fine fibers of 1 tex or less, and further 0.5 tex or less, taking advantage of the touch.

In particular, if the thickness of the fibers of "Hana Ito" was simply made thinner as an extension of the conventional technology, "Hana Ito" would easily fold, give a sense of glare, and have poor covering properties, making it undesirable. The drawbacks can be solved by three-dimensional densification as in the invention.

When such ultrafine fibers are used for "hana yarn", multicomponent fibers that can be subdivided are used.

When using such fibers, various operations can be carried out in the form of thick fibers, which reduces process troubles.

In other words, workability is extremely improved in processes such as carding, shrinking, and forming yarn.

From this point of view, it is preferable from the viewpoint of operation that the fibers be divided into small pieces after forming the maul yarn.

Furthermore, in this case, the fibers are thick before being composited and subdivided, and have a strong ability to cause shrinkage even after temporary twisting, so it is preferable to subdivide the fibers after the fibers have developed shrinkage.

However, this does not necessarily have to be the case.

That is, the subdivision step may be carried out after the formation of the mall yarn, and does not matter before or after the appearance of shrinkage.

Another feature of the present invention is that the length of the "hana yarn" can be apparently shortened in the state of the final mauling yarn, thus making it possible to manufacture high-grade and dense mauling yarn. The ``hana thread'' is cut in order to be inserted between the two, but there is a limit to the length that can be cut.

This is due to equipment limitations and gripping problems due to being caught between the ground threads.

If it is too short, the ``hanaito'' will be easily pulled out and will be impractical.

Currently, this limit is said to be 1.5 to 2 m thick.

In this case, it is thought that it is possible to shorten the fibers by using high shrinkage fibers and shrinking them afterwards.

However, in reality, even if a high shrinkage fiber with a length of 2 mm and a shrinkage rate of 30% is used, the result will only be L4mrn, and in such a region it will not be as effective as expected, and as mentioned above, the problem of "dropping" remains. This can be said to be an extremely difficult problem in practice.

The present invention is characterized in that by three-dimensionally crimping the "hana yarn", it can be made into a molding yarn that is extremely short in appearance and has good covering properties without shortening the actual length.

``Hanaito'' is extremely unique from a practical standpoint, as it is bulky and does not easily sag and fall out.

In particular, in the present invention, the thickness of the fibers constituting the "hana thread" is 1
tex or less, preferably 0.5 tex or less, more preferably Q, 3 tex or less.

This is because the touch gloss is extremely good, and the ultra-fine structure suppresses the adhesion of dust, which is a disadvantage of such mole yarns.

The subdividable conjugate fiber used in the present invention refers to a fiber that is made of multicomponent polymers having different dissolution removability or affinity, and is fibrillated or subdivided by removing or mutually peeling at least one component.

Typical examples include multicore conjugate fibers, multilayer conjugate fibers, a form of polymer blend fiber, and other modified versions thereof.

However, this is just a representative example and should generally be considered according to its essence.

Polymers constituting such fibers may be selected as appropriate,
Any combination of polymers capable of forming fibers may be used, but those based on polyester, polyamide, polyacrylonitrile, polyolefin, polyurethane, and their copolymers are preferred. Using two intertwisted spun yarns (wire number), the "hana yarn" is a multicore composite fiber with a core component of polyethylene terephthalate, a sheath component of polystyrene, the number of cores is 36, and the core component ratio is 90%. The material that had been false-twisted was used.

In this state, the fiber was 130D-48F.

This combination was further processed into a maul yarn using 100D-10F low melting point polyamide fiber on one side of the ground yarn.

The length of the "hana thread" of the obtained fiber was 3 mm.

This was used alternately with No. 15 spun yarn as the weft, and 75D-24F polyethylene terephthalate was used as the warp, with a warp density of 120 threads/in, a weft density of 21 threads/in, and a 2/2 twill composition.

The obtained product was subjected to a scouring and relaxing treatment and a densification treatment, and after drying, it was treated with trichlorethylene.

The product obtained did not have the glaring luster characteristic of ultra-fine synthetic fibers, the ground threads did not show through, it was extremely flexible and soft to the touch, and its pill resistance was extremely good at grade 5.

``Hanaito'' was also apparently short and had a luxurious appearance.

Example 2 In a multifilamentary composite fiber with six cores, the core component is nylon 6.
, core/sheath-907 with sheath component polyethylene terephthalate
A fiber of 75D-18F was obtained with 10 stitches.

This fiber was false-twisted at 180° C., then pulled and machine-crimped, and then cut into a length of 86 mm to obtain a No. 45 spun yarn.

Furthermore, two of these yarns were supplied in parallel and processed into a mall yarn as "hana yarn."

The ground yarn is polyacrylonitrile No. 40 twin yarn.

After the thus obtained mole yarn was shrinked, it was soaked in a 5% caustic soda solution to remove polyethylene terephthalate.

The resulting product had a natural and soft feel on the surface, and had excellent durability with relatively little hair pulling.

Claims (1)

[Claims] 1. A product with good covering properties and durability, characterized by using a multi-component fiber that is a latent crimped fiber and can be subdivided into "hana yarn", and further includes the following steps. Molle yarn manufacturing method. ■ Process to develop shrinkage ◎ Process to form mall yarn ○ Process to subdivide multicomponent fibers (however, O shall be performed in a later process than @)