JPS607052B2 - Animal hair-like polyamide staple fiber mixture - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to animal hair-like polyamide stable blend fibers.

[Conventional technology]

Natural animal hair fibers are widely used.

Among these fibers, knitted fabrics made from fibers obtained from animals other than sheep (in the present invention, these fibers are specifically referred to as animal wool fibers to distinguish them from wool fibers) have a better texture than those obtained from wool fibers. Because the sensual fiber properties such as feel are extremely unique (for example, they contain prickly hairs with virtually no crimping), they are
It is especially prized for specific uses such as outer clothing. This animal hair fiber is made of mohair, which is made up mostly of prickly hair with virtually no crimps.
It is roughly divided into three types: toned animal wool, angora-like animal wool, which is made of the above-mentioned prickly hair and soft down hair, and cashmere-like animal wool, which is mostly made of downy hair. As the raw material is the wool of animals that are kept in far fewer numbers than sheep, such as martens, foxes, Angora goats, Angora rabbits, alpacas, camels, cashmere goats, salidos, and litunas, the production volume is low.

Therefore, vertical animal wool has high rarity value. Therefore, attempts have been made to produce animal hair-like fibers equivalent to this animal hair fiber from polyacrylonitrile fibers.

For example, a method (Japanese Patent Publication No. 52-47
053 Publication), and by specifying the interfiber entanglement coefficient and total interweaving force of polyacrylonitrile fibers, that is, the number of curls and degree of crimp, and by attaching a specific silicone resin, wool-like or animal hair can be produced. There is a method (Japanese Patent Publication No. 53-19718) to produce fibers with a similar slimy texture. Staple fibers obtained by the former method exhibit a suitable animal hair appearance, but it is nearly impossible to vary the cross-sectional thickness of the fibers along the length direction on a commercial production scale.

On the other hand, the latter method "can give polyacrylonitrile fibers a slimy texture similar to wool or animal hair, but
This method specifically aims to obtain a wool-like texture and uses only one type of staple fiber with crimps. The appearance and texture of animal hair cannot be obtained. [Problems to be Solved by the Invention] Therefore, the present inventors have developed a material that is made from polyamide fibers and has an appearance and texture similar to that of animal wool chicks, which is made of a mixture of prickly hair and downy hair, and has a slimy texture. As a result of careful consideration of obtaining staple fibers,
Based on the fact that it is sufficient to mix at least two types of polyamide staple fibers having a specific morphology in a specific ratio, and to apply a surfactant and a polysiloxane fiber treatment agent to at least one of them. I ended up releasing it.

That is, an object of the present invention is to obtain animal hair-like staple fiber having excellent appearance and slimy feel from polyamide fiber. [Means for solving the problem] This purpose is to provide at least one type of polyamide stable fiber A having a winding number of 5 to 20/25 side windings;
A mixed fiber consisting essentially of at least one type of polyamide stable fiber B having no winding stripes,
At least one of the fiber A and the fiber B is a mixed fiber surface-treated with a surfactant and a polysiloxane fiber treatment agent, and the fiber B has an average fiber length equal to that of the fiber A. Long 1~
5 times, and the average weave is 3 to 1 stitch higher than the average weave of the fiber A, and the fiber A is 5 to 7% by weight based on the total weight of the mixed fibers. This is accomplished by incorporating animal hair-like polyamide staples into a mixed fiber.

[Function] Next, the method for obtaining the mixed fiber of the present invention and the characteristics of the obtained mixed fiber will be explained in detail.

First, the fiber A made of polyamide and having crimps is manufactured by the following method. Well-known polyamides such as polycapramide and polyhexamethylene adipamide are melt-spun into a circular, triangular, flattened, Y-shaped, etc. cross-sectional woven fabric (applied with a normal thread oil), and then Fiber A is obtained by stretching, winding and cutting this filament. Here, it is preferable to stretch the polyamide with melted paper yarn under conditions such that the average twill of the woven body after stretching is 1 to 8 deniers. The number of windings is 5 to 20 on each 25 side.The cutting is preferably carried out under conditions such that the average fiber length of the fiber A is 25 to 100.The fiber length of such fiber is Since it is understood as the average fiber length, the cutting method may be a so-called variable cut method.

Separately from fiber A, fiber B is produced which is made of polyamide and has no crimps.

The manufacturing method for the fiber B may basically be almost the same as the manufacturing method for the fiber A, except that no winding is imparted, but the average fiber length and average weave are as follows:
Fiber A ranges from 1 to 5 times and 3 to 1 tones.
That is, for fiber B, the polyamide melt is melt-spun and drawn so that the average weave of the fibers A and B is 3 to 1 of the average weave of the fiber A,
Next, the drawn twill body is immediately cut into a length that is 1 to 5 times the average fiber length of the fiber A. This fiber B
has an average weave of 5 to 50 denier and an average fiber length of 25 to 2
Preferably, it is 0. At least one of the two types of staple fibers, fiber A and fiber B, is a fiber surface-treated with a surfactant and a polysiloxane fiber treatment agent.

As the surfactant, carboxylic acid salts of higher fatty acids,
Anionic surfactants such as higher alcohols, higher alkyl ether sulfate ester salts, alkylbenzene sulfosate salts, paraffin sulfonate salts, higher alcohol phosphates, higher alcohol ethylene oxide adduct phosphate ester salts, amino acid amphoteric interfaces Active agents, carboxylate type amphoteric surfactants such as betaine type amphoteric surfactants, amphoteric surfactants such as sulfuric acid ester type amphoteric surfactants, nonionic surfactants such as polyethylene type and polyhydric alcohol type, etc. used.

The surfactants may be used in combination of two or more, if necessary. A cationic surfactant may also be used as a minor component. The polysiloxane-based fiber treatment agent includes anionic non-reactive polysiloxanes such as dimethyl-based methylphenyl-based non-ionic non-reactive polysiloxanes, modified polyether-based nonionic non-reactive polysiloxanes, high polymer-based anionic reactive polysiloxanes, and highly polymerized polysiloxanes. Polymer-based cationically reactive polysiloxanes are used, but it is preferable to use highly polymeric cationically reactive aminoalkyl polysiloxanes.

The surfactant is ZO. based on the weight of the fiber. 1
It is preferable to add up to 1.5%. Further, the amount of the polysiloxane fiber treatment agent applied is preferably 0.01 to 1.0% based on the weight of the fiber. The surfactant and the polysiloxane fiber treatment agent may be applied alone or as a mixed oil agent by either the dipping method or the spray method. Preferably, the surfactant is Twill thread process using the dipping method. The polysiloxane-based fiber treatment agent is used as an oil agent applied to the fibers by a spray method,
In any step after applying the surfactant, for example, before or after stretching, it is preferable to use it as an oil agent. By attaching the surfactant and the polysiloxane fiber treatment agent to the surface of the fiber in this way, the coefficient of friction between the fibers is lowered, and a slimy texture and feel similar to animal hair fibers can be obtained. 3. In addition, when obtaining a polyamide staple fiber containing a matting agent, the matting agent is obtained by adding 2% by weight or less to the raw material before polycondensation reaction of the polyamide by a well-known method. Melt paper yarn is made using polyamide. As the matting agent, titanium oxide, calcium carbonate, and Koryoshi are used, but titanium oxide is preferably used in 3. It is preferable to add less than % by weight. Thus, once at least two types of staple fibers, fiber A and fiber B, have been prepared, they are mixed in a specific proportion.

The mixing method may be one that is commonly used in spinning factories, such as raw cotton blending, wrap blending, sly blending,
Although there are bar blends, fleece blends, roving blends, etc., raw cotton blends are preferably used. In this case, the mixing ratio of fiber A and fiber B is set such that 5 to 70% of fiber A is included based on the total weight of the mixed fibers.
In addition, in addition to fiber A and fiber B, another staple fiber C, which may or may not be wound, accounts for 5 to 10% of the total weight of the mixed fibers.
It may be blended. The thus obtained mixed fibers are mixed with other common fibers, preferably wool fibers, and spun to form an animal hair-like spun yarn, and then an animal hair-like knitted fabric.

In order to obtain a mixed fiber that is more similar to the animal hair of adult Angora goats, kitted Angora goats, Angora rabbits, and cashmere goats, two or more types of polyamide staple fibers having the following characteristics are further mixed. It is preferable.

In addition, in the following table and examples, "Imburden oil agent J" means the above-mentioned surfactant, "spray oil agent" means the above-mentioned polysiloxane fiber treatment agent, and "%" means weight %, respectively.

Angora Goat Adult Angora Goat Kid Angora Rabbit Cashmere Goat Next, examples of the present invention will be described, but the present invention is not limited thereto.

〔Example〕

Example 1 Two types of polyamide staple fiber A with crimp,
.

That is, the fibers A, A2 were obtained by melt-spinning polyamide, applying a bonding oil, stretching, applying a spray oil, crimping, and cutting.
It was obtained in the same manner as in the case of Fiber A except that crimping was not performed. The immersion oil used a mixture of a surfactant, a betaine-type amphoteric surfactant, and a higher alcohol ethylene oxide adduct phosphate, and added 0.6% based on the weight of the fiber. Furthermore, as a spray oil agent, Sj (CH2) with a molecular weight of 50,000 and an average molecular weight of 2
3NHCH2C ratio: A polysiloxane fiber treatment agent containing polydimethylsiloxane having NH2 groups as a main component was used, and the amount was applied in an amount of 0.07% based on the weight of the fiber.
The fibers A and B obtained in this way are processed by a raw cotton blending method commonly used in spinning factories, and the fibers A and B are 30% of each other, based on the total weight of both fibers A and B.
%, 30% of fiber A2 and 40% of fiber B
The fibers were fed into a cotton opener using a horizontal wheel system, and the fibers were thoroughly mixed and crossed, and the mixed fibers were sent to the mixing room using an air blower to enhance the cross-crossing effect.

The polyamide staple blend fiber thus obtained exhibited the following interfiber friction coefficient:

Static friction coefficient: 0.209 Dynamic friction coefficient: 0.159 Static friction coefficient difference: 0.050, Measurement method and conditions: Roder method a
t20℃65%RH Load: 9 of 100 Peripheral speed: 90 mm/1 inch (when measuring dynamic friction) As shown above, the static dynamic friction coefficient value is low and the static dynamic friction coefficient difference is small, so it has the slimy texture of animal wool. (Slimy feel) was excellent.

In addition, this polyamide staple mixed fiber sufficiently satisfied the appearance and texture of natural animal hair, which is composed of downy hair and prickly hair similar to Angora rabbit hair. This polyamide staple mixed fiber is 30% based on the total weight of raw cotton for knitting fabrics.
In the knitted fabric obtained by mixing 10% natural animal hair Angora rabbit and 60% wool, the crimped fibers A, A2 in the mixed fibers are raised as moderate downy hair and do not have curly stripes. Fiber B becomes like a stinging hair, animal hair angora rabbit 3
It had the same appearance and texture as the knitted fabric obtained by mixing 0% wool and 70% wool, and also had the same slimy texture.

Comparative Example 1 A mixed fiber was produced in the same manner as in Example 1, except that no impregnating oil agent and no spray oil agent were applied.

The obtained mixed fiber was very similar to natural wool fiber in terms of appearance and texture, but the coefficient of friction between the fibers was as follows: static friction coefficient: 0.342, dynamic friction coefficient: 0.216, static friction coefficient difference: 0. .126, the value of the static dynamic friction coefficient and the static dynamic difference were large, resulting in a squeaky texture, and a slimy texture similar to animal hair was not obtained.

Further, a mixed fiber was produced in the same manner as in Example 1, except that a bonding oil was applied but a spray oil was not applied. The appearance and texture of the obtained mixed fiber was almost the same as that of Example 1 and natural animal hair fiber, but the coefficient of friction between the fibers was as follows: static friction coefficient: 0.275 kinetic friction coefficient: 0.190 Static friction coefficient difference :0.085, both the static and dynamic friction coefficient values and the static and dynamic difference were relatively small, and although a certain degree of slimy texture was obtained, it was insufficient.

Comparative Example 2 Fiber A in Example 1, Fiber A
15% each of 2, 10% natural animal hair Angora rabbit, 60% wool
% was mixed to obtain a spun yarn, and then a knitted fabric was obtained.

When only fibers with crimps such as fibers A, A, and A2 are mixed, there are no fibers that have a bristle-like appearance, so the resulting knitted fabric has insufficient nap even when graded vertically. Compared to Example 1, the angora-like appearance and texture were inferior. Further, 30% of Fiber B in Example 1, 10% of natural angora rabbit hair, and 60% of wool were mixed to obtain a spun yarn, and then a knitted fabric was obtained.

Since only non-crimped fibers were mixed, the resulting knitted fabric had too many bristle-like fibers and had a rough and hard texture, giving it an angora-like appearance compared to Example 1. It was inferior. Example 2 Three types of polyamide staple fibers A and B with different degrees of weave, number of crimps, and amount of matting agent were prepared in the same manner as in Example 1.
, and B2 (having the following properties) were prepared and mixed to obtain a polyamide staple blend fiber.

The interfiber friction coefficient of the thus obtained polyamide staple mixed fiber is almost the same as the value shown in Example 1, and this animal hair-like polyamide staple mixed fiber has an appearance similar to that of natural animal hair, Angora rabbit (Angora style). It had a shiny texture and a slimy texture.

This polyamide staple mixed fiber was blended, knitted and woven in the same manner as in Example 1 to obtain a knitted fabric.

The knitted fabric had the same appearance (glossy) and **slimy texture as the whole fabric obtained by blending, knitting and weaving only natural animal hair and wool. When this green fabric is crimped, the fibers in the mixed fiber are also raised, similar to natural animal hair fibers.
The appearance and texture were the same as when only natural animal hair was mixed with wool. Example 3 Using the same method as in Example 1, three different weaving degrees and number of windings were prepared.
Separate polyamide stable fibers A, B, & (having the following properties) were prepared and mixed to obtain a polyamide stable mixed fiber.

The polyamide staple mixed fiber thus obtained obtained a coefficient of friction between fibers that was almost the same as that shown in Example 1, and
It fully satisfied the slimy texture of natural Angora rabbit. In the same manner as in Example 1, a knitted fabric made in the same manner as in Example 1 by mixing 10% of this polyamide staple mixed fiber, 10% of natural animal hair Angora rabbit, and 80% of wool was made by mixing only the natural animal wool warp with the wool. It had the same appearance and slimy texture as the knitted fabric obtained by the method. [Effect of the invention] The mixed fiber obtained by the above method has a different appearance and slime texture from animal hair-like fiber or wool fiber obtained simply from one type of polyamide staple fiber. It has an appearance and a slimy texture equivalent to that of animal hair fibers, and is an animal hair-like fiber with excellent animal hair texture.

Claims (1)

[Claims] 1 A mixed fiber consisting essentially of at least one type of polyamide stable fiber A having crimps of 5 to 20 crimps/25 mm and at least one type of polyamide stable fiber B having no crimps. At least one of the fiber A and the fiber B is a fiber surface-treated with a surfactant and a polysiloxane fiber treatment agent, and the fiber B has an average fiber length of the fiber A. 1 to 5 times the fiber length, and has an average fineness of 3 to 1 of the average fineness of the fiber A.
0 times, and the fiber A is contained in an amount of 5 to 70% by weight based on the total weight of the mixed fiber.