JP2018059229A - Intermingle yarn and method for producing the same and melange tone carpet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide, in consideration of the background of the conventional techniques, an intermingle yarn excellent in bulkiness and capable of producing a natural melange tone pattern without a pattern loss when used in a tufted carpet and a method for producing the same, and to provide a melange tone carpet using the intermingle yarn.SOLUTION: The intermingle yarn includes: an interlaced part obtained by blending two or more kinds of multifilament crimped yarns having different dyeing performances and/or color tones; and a non-interlaced part. The intermingle yarn satisfies the following requirements (1)-(5): (1) the latent crimp elongation is 15% or more and 35% or less, (2) the blend yarn degree in the non-interlaced part is 65% or more and 100% or less, (3) the average value of the number of interlacing per 1 m is 25 or more and 38 or less, (4) the longest length of interlacing-omission is 30 mm or more and 100 mm or less, and (5) the number of interlacing-omission that is 70 mm or longer is 0 or more and 5 or less.SELECTED DRAWING: None

Description

  The present invention relates to an intermingle yarn, a method for producing the same, and a frosted carpet.

  Traditionally, tufted carpets have grown rapidly, mainly in demand for office buildings. In particular, tufted carpets using different-colored mixed crimped yarns made of nylon BCF (Bulked Continuous Filament) have been required to have uniform, sharp patterns and high contrast multi-color tone carpets.

  The following two methods have generally been used for different color mixed crimped yarns. That is, a method for imparting a multicolor pattern by twisting crimped yarns having different colors such as polyamide, polyester, polypropylene, etc., and high-pressure fluid treatment by arranging crimped yarns having different colors instead of twisted yarns Thus, there is known a method of providing a multicolor pattern by so-called interlace processing that provides entanglement between filaments. Especially in the field of tufted carpets, the latter interlace processing is the mainstream because of its low cost.

  In recent years, with the diversification and individualization of buildings and commercial facilities, tufted carpets are superior in terms of luxury and interior space, especially in bulky and natural frosted carpets with no pattern flow. A handle has been required. Therefore, intermingle yarns composed of two or more kinds of multifilament crimped yarns having different dyeing performance and / or color tone have been required to have a high degree of mixing. However, in order to obtain an intermingle yarn having a higher degree of mixing, a high mixed fiber air pressure is required. As a result, the resulting intermingle yarn has a large number of entanglements and is insufficient in bulkiness. There were drawbacks.

  For example, in Patent Document 1, as a tonal and polychromatic crimped yarn having strong contrast, entanglement in which each single yarn of synthetic fiber multifilaments having different dyeability and each single yarn of original synthetic fiber multifilament is entangled And non-entangled portions in which the single yarns form a group and have little entanglement are alternately formed in the length direction of the crimped yarn, and the degree of entanglement is 30 to 50 pieces / m, and the original is attached to the unentangled portion There is disclosed a toned multicolor crimped yarn characterized in that the degree of blending of synthetic fiber multifilaments with different dyeability of synthetic fiber multifilaments is in the range of 10 to 60%. In the technique described in Patent Document 1, a mixed fiber crimped yarn having a high contrast is obtained by setting the mixed fiber entangled state of the tone-colored polychromatic crimped yarn within the above range. On the other hand, although a dense carpet pattern can be obtained by using the fiber mixing degree described in Comparative Example 5 and Comparative Example 6 of Patent Document 1, the degree of entanglement is high and the bulkiness is insufficient.

  Further, in Patent Document 2, as a different-color mixed crimped yarn capable of producing a uniform and good multicolored pattern without pattern flow, two or more types of crimped yarns exhibiting different colors with a first entangled nozzle The entangled yarn is mixed with the tangled yarn, and then the entangled detection means (optical means is preferably used as the means for detecting the entangled). There is disclosed a method for producing a different color mixed crimped yarn characterized by detecting entanglement missing and applying entanglement again only to the detected entanglement missing part with a second entanglement nozzle. However, in the second entanglement nozzle, the fluid is injected only to the entanglement missing part to impart the entanglement, so that the yarn is loosened or broken in the entanglement processing region, and the processing stability is poor. Had. Further, by increasing the average value of 100 entanglements per meter, there was no pattern flow and a dense carpet pattern was obtained, but the bulkiness was insufficient.

  Furthermore, in patent document 3, as a mixed fiber crimped yarn composed of a polyamide crimped yarn and a polyester crimped yarn and / or a polyolefin crimped yarn, the number of entanglements is 30 to 45 / m, and the degree of blending is 10 to 50%. A blended crimped yarn is disclosed. In the technique described in Patent Document 3, the mixed fiber folds that can create a multicolor pattern carpet with no pattern flow and uniform contrast by setting the mixed entangled state of the mixed fiber crimped yarn within the above range. The yarn is to be reduced. Patent Document 1, Patent Document 2, and Patent Document 3 relate to a toned pattern with a clear contrast, and a dense carpet can be obtained by increasing the degree of mixing, so that the bulkiness is too high. It had the disadvantage of becoming insufficient.

JP-A-7-70853 JP 2001-226843 A JP 2009-74212 A

  In view of the background of the prior art described above, the present invention is an intermingle yarn that is capable of producing a natural frosted pattern that is excellent in bulkiness and has no pattern flow when used in a tufted carpet, and a method for producing the same. It is another object of the present invention to provide a frosted carpet using the intermingle yarn.

The present invention is to solve the above-mentioned problems, and includes an interlaced portion and an unentangled portion in which two or more types of multifilament crimped yarns having different dyeing performance and / or color tone are mixed. The mingle yarn is an intermingle yarn characterized by satisfying the following requirements (1) to (5).
(1) Potential crimp elongation rate is 15% or more and 35% or less (2) Mixing degree of non-entangled part is 65% or more and 100% or less (3) Average value of entanglement number per 1 m is 25 or more and 38 or less ( 4) The maximum entanglement missing length is 30 mm or more and 100 mm or less. (5) The number of entanglement missing 70 mm or more is 0 or more and 5 or less.

  According to a preferred aspect of the intermingle yarn of the present invention, the entanglement number of the two or more types of multifilament crimped yarns constituting the intermingle yarn is 0 / m or more and 20 / m or less.

  According to a preferred aspect of the intermingle yarn of the present invention, the latent crimp elongation rate of the two or more types of multifilament crimped yarns constituting the intermingle yarn is 15% or more and 35% or less.

The above intermingle yarn of the present invention is 0.20 mN / dtex or more and 1.00 mN, respectively, before two or more types of multifilament crimped yarns having different dyeing performance and / or color tone are mixed using high-pressure air. It can be manufactured by drawing multifilament crimped yarns stretched below / dtex and blending them under the following conditions.
(1) High-pressure air flow rate is 500 L / min or more and 1250 L / min or less (2) The ratio of the maximum thread passing hole diameter in the high-pressure air nozzle to the high-pressure air injection hole diameter is 1.0 or more and 1.7 or less (3) High-pressure air nozzle The running yarn loading / unloading angle is 20 ° or more and 60 ° or less in the direction of the high-pressure air injection hole.

  According to a preferred aspect of the intermingle yarn of the present invention, the frosting carpet characterized in that the intermingle yarn is used in at least 80% by weight or more of the pile yarn.

  According to the present invention, when used for a tufted carpet, an intermingle yarn excellent in bulkiness and capable of producing a natural frosted pattern without pattern flow, a manufacturing method thereof, and the intermingle yarn are provided. The used frosted carpet can be provided.

Schematic showing an example of a method for producing the intermingle yarn of the present invention Schematic which shows an example of the high pressure air nozzle which manufactures the intermingle yarn of this invention

  Hereinafter, the present invention will be described in more detail.

The present inventors diligently studied about an intermingle yarn that is capable of producing a natural frosted pattern with excellent bulkiness and no pattern flow when used in a tufted carpet, and the following requirements (1) to An intermingle yarn satisfying (5), wherein the intermingle yarn is a entangled portion and a non-entangled portion in which two or more types of multifilament crimped yarns having different dyeing performance and / or color tone are mixed. It was clarified that this problem can be solved at once by using an intermingle yarn characterized by having
(1) Potential crimp elongation rate is 15% or more and 35% or less (2) Mixing degree of non-entangled part is 65% or more and 100% or less (3) Average value of entanglement number per 1 m is 25 or more and 38 or less ( 4) The maximum entanglement missing length is 30 mm or more and 100 mm or less. (5) The number of entanglement missing 70 mm or more is 0 or more and 5 or less.

  The intermingle yarn in the present invention is an intermingle yarn composed of two or more types of multifilament crimped yarns having different dyeing performance and / or color tone. The two or more types of multifilament crimped yarns may be crimped yarns made of the same polymer material or may be crimped yarns made of different polymer materials. Further, it may be two or more kinds of crimped yarns that are colored in different colors with pigments or dyes in advance, or may be two or more kinds of crimped yarns composed of materials having different dyeability or dye absorbability.

  The intermingle yarn of the present invention shows a different color without being dyed when the crimped yarn constituting the yarn is previously colored with a pigment or dye, and the crimped yarn constituting the yarn is potentially dyeable. When it has, it will show a discoloration finally by dyeing | staining. Here, the expression of different color means that different colors or colors are obtained when two or more kinds of yarns are compared.

  The pigment may be either organic or inorganic, but generally known pigments such as carbon black, bengara, and phthalocyanine are used.

The dye used in the present invention is not limited at all, but conventionally known dyes suitable for the polymer material of the multifilament crimped yarn constituting the intermingle yarn of the present invention are used in terms of dyeability and various fastnesses. It is done. For example, in the case of polyamide, acid dyes, metal-containing acid dyes and / or disperse dyes can be used. Examples of crimped yarns having dyeability include, for example, polyamide fibers, ordinary polyamides, polyamides with an increased amount of amino end groups (—NH ₂ ) bonded to acidic dyes, sulfos bonded to basic dyes. Examples thereof include polyamides having terminal groups (—SO ₃ ) introduced therein.

  The polymer material of the multifilament crimped yarn constituting the intermingle yarn of the present invention is not limited as long as it does not impair the effects of the present invention, but has been conventionally suitable as a crimped yarn for carpets. The raw materials such as polycapramide and polyhexamethylene adipamide are preferred. Moreover, the copolymer containing a copolymerization component may be used in order to improve the spinning property and the quality of the final product. An example of a preferable copolymer is polyamide obtained by copolymerizing 99 to 80 parts by weight of caprolactam and 1 to 20 parts by weight of hexamethylene adipamide, trimethylene adipamide, hexamethylene sebacamide and the like. Other polymers having amide bonds, copolymers thereof, and blends may be used.

  In addition, in polymers, matting agents such as titanium oxide, weathering agents, antioxidants, antibacterial agents, bactericides, hygroscopic agents, deodorants, deodorants, fragrances, phosphorescent substances, fluorescent materials Substances may be used in combination.

  Examples of the polymer exhibiting dissimilarity in the present invention include a point that a multicolor feeling can be easily expressed when dyed in the same bath, a variety of color tones, an easiness of the spinning process, and an easiness of the crimping process. From the viewpoint, it is more preferable to use polyamide.

  The total fineness of the intermingle yarn in the present invention is preferably 2200 to 4200 denier. When the fineness is within this range, it is accompanied by a bulky property and a volume feeling, and a desirable pattern as a frost adjustment can be easily produced, and stability during production is also excellent. In order to control the bulkiness and volume of the carpet, generally a means for increasing the basis weight is used in combination, but if it is less than 2200 denier, it is necessary to increase the gauge or stitch to obtain a predetermined basis weight. Tufting tends to be difficult. That is, single yarn breakage and pile dropout occur frequently during tufting, and the process stability tends to be lacking. On the other hand, if the fineness exceeds 4200 denier, it is too thick to make tufting difficult. Further, when entanglement is lost as a whole, the loss becomes conspicuous.

  Furthermore, it is preferable that two or more types of multifilament crimped yarns having different dyeing performance and / or color tone constituting the intermingle yarn have substantially the same total fineness of each crimped yarn. “Substantially the same” means that the difference in the total fineness of the crimped yarn after splitting is within 5%, more preferably within 2%. When the difference in the total fineness of the split and crimped yarns exceeds 5%, the degree of mixing between the single yarns varies. In addition, the characteristics of the crimped yarn having a high total fineness become dominant on the carpet surface, and when it is made into a carpet, it becomes a monotonous color feeling.

  The single yarn cross-sectional shape of the filament constituting the intermingle yarn in the present invention is not particularly limited. It is preferable to use them in appropriate combinations. Each multifilament crimped yarn is preferably composed of multifilaments having the same single yarn cross-sectional shape, and an intermingle yarn is preferably formed by combining multifilament crimped yarns having different single yarn cross-sectional shapes.

  In the frosted carpet of the present invention, in order to obtain a higher quality carpet as a carpet, the above-described intermingle yarn of the present invention is combined with other filaments as a part of the pile as long as the effect is not impaired. There is no problem even if it is used. For example, in order to lower the frictional voltage of the carpet, there is no problem with mixing fibers having antistatic properties.

The latent crimp elongation rate of the intermingle yarn of the present invention needs to be 15% or more and 35% or less. If it is less than 15%, the occurrence of crimping in the dyeing or backing process becomes insufficient when the carpet is made, the bulkiness and volume feeling are unsatisfactory, and the effect of preventing joint space is also insufficient. On the other hand, it is technically difficult to produce a crimped yarn having a latent crimp elongation rate exceeding 35% by a normal production method. Even if a crimped yarn exceeding 35% is obtained, it is subjected to dyeing and backing. When the carpet is finished, the occurrence of crimp is large, so that the pile is shrunk and the bulkiness may be lowered. Further, the latent crimp elongation rate indicates the crimp elongation rate after the boiling water treatment, and is a value obtained as follows. First, the skeined yarn is allowed to shrink for 3 hours in a room with a room temperature of 20 ° C. and a humidity of 65%. Next, it is immersed in boiling water for 20 minutes and subjected to boiling water treatment. Next, the skeined yarn treated with boiling water is left to dry in the aforementioned room for 12 hours. An initial load of 0.0176 mN / dtex is applied to the sample yarn, and after 30 seconds, the sample length is marked to 50 cm (A). Next, a constant load of 0.882 mN / dtex is applied to the sample, and the sample length (B) that has been extended after 30 seconds is measured. The latent crimp elongation rate C [%] is obtained by the following formula.
C = {(B−A) / A} × 100
The latent crimp elongation rate is an index of crimp characteristics that are manifested during the dyeing of the carpet and the heat treatment during backing.

It is necessary that the intermingling degree of the intermingle yarn of the present invention is 65% or more and 100% or less. The degree of blending in the present invention refers to the degree of mixing at the single yarn level of two or more types of multifilament crimped yarns having different dyeing performance and / or color tone, and the higher the degree of mixing, the higher the degree of mixing and the naturalness without pattern flow. A carpet with a frosted pattern can be obtained. A blending degree of less than 65% is not preferable because two or more types of multifilament crimped yarns having different dyeing performance and / or color tone are separated, resulting in a strong contrast and a rough carpet pattern. Note that the degree of fiber mixing in the unentangled part is determined by the degree of fiber opening when the fiber bundle crosses the high-pressure air jet flow. That is, factors such as yarn friction between single yarns, high-pressure air flow velocity / flow rate, degree of freedom in opening fiber bundles by the air guide shape (free space where single yarns can be opened), and tension during opening It depends on. These factors vary individually, and the degree of blending varies depending on the combination. As a result of the experiment, the intermingle yarn obtained by setting each factor was continuously measured for 10 parts of the interlaced yarn, and the average value was taken as the intermingle yarn. In particular, it was found that it corresponds well with frost adjustment. Accordingly, the degree of blending as used in the present invention refers to a group (block) of the total number of single yarns (N ₀ ) of polyamide crimped yarns that are cut at any position of the unentangled portion of the intermingle yarn in the cross-sectional direction and dyed. The number (N ₁ ) (average value of n = 10) of the single polyamide crimped yarns forming N is counted and obtained as a value represented by (N ₀ −N ₁ ) / N ₀ .

  The intermingle yarn of the present invention is required to have an average value of the number of entanglements per meter of 20 or more and 38 or less. If it is less than 20, the fiber mixing does not proceed, the contrast is strong, and the carpet has a rough pattern. On the other hand, if it exceeds 38, the number of entanglements is too large, and the bulkiness becomes insufficient, which is not preferable.

  The intermingle yarn of the present invention needs to have a maximum entanglement length of 30 mm or more and 100 mm or less. The maximum entanglement length indicates the longest part of the non-entangled part, and it is technically difficult to manufacture an intermingle yarn having an unentangled part of less than 30 mm by a normal manufacturing method. Even if an intermingle yarn is obtained, the number of entanglement is large and the length of the entanglement portion becomes long, which is not preferable because the bulkiness is insufficient. On the other hand, if it exceeds 100 mm, the mixing of two or more types of multifilament crimped yarns having different dyeing performance and / or color tone at the unentangled portion does not progress, and a so-called pattern flow in which no color change is observed is desired. No marbled carpet is available.

  In the intermingle yarn of the present invention, it is necessary that the number of entanglement of 70 mm or more is 0 or more and 5 or less. If the number exceeds 5, the pattern flow tends to be noticeable even when the maximum entanglement length is 100 mm or less, which is not preferable.

  The entanglement mechanism of two or more types of multifilament crimped yarns can be explained by a string vibration model. That is, at the same time as the fiber bundle crosses the high-pressure air jet flow, the fiber bundle in the portion exposed to the jet flow opens, and the single yarns are entangled before and after the opened portion. Therefore, the number of entanglement, the maximum length of entanglement, and the number of entanglement of 70 mm or more are the fiber density of the fiber bundle, the tension at the time of opening, the guide distance between the front and rear of the high pressure air nozzle, and the spread fiber bundle by the high pressure air guide shape This is determined by factors such as the degree of freedom of vibration (number of times of crossing the jet flow) and the yarn friction between single yarns. As a result of experiments, the number of intermingle yarns obtained by setting each factor, the maximum entanglement length, and the number of entanglement loss of 70 mm or more were measured by the following method, and the handle of the tufted carpet, in particular It was found that it corresponds well with frost adjustment.

  In the present invention, the confounding measurement is performed in accordance with LAWSON-HEMPHILL, Inc. EIB-E manufactured by EIB-E (Electronic Inspection Board for Entrainment) is used, and the diameter of the yarn is continuously observed for 100 m (measurement length: 100 m). Specifically, it is measured by the following method. First, in a state where a tension of 1/10 [mN / dtex] is applied to the yarn, the diameter of the yarn is measured 100 m continuously in the longitudinal direction at intervals of 5 mm. First, an average diameter Y [mm] is obtained from the average value of the 20001 yarn diameters thus obtained. Next, with a tension of 1/10 [mN / dtex] applied again to the 100 m yarn used to determine the average diameter Y, the yarn diameter was continuously measured. A node portion of 7 Y [mm] or less is defined as an entangling point. Here, the node is a portion in which filament single fibers are entangled and converged and the diameter is smaller than before and after.

  The average value X of the number of entanglements per meter is obtained as a value [pieces] obtained by obtaining the number of entangled points per meter in the above measurement and averaging the obtained number of entangled points per 100 meters.

  The maximum entanglement length is obtained as the longest entanglement length in the above measurement (measurement length of 100 m). Here, the length of entanglement is the distance [mm] from one entanglement point to the next entanglement point.

  Further, the number of missing entanglements of 70 mm or more is obtained as the number [pieces] of portions where the distance from one entangled point to the next entangled point reaches 70 mm or more in the above measurement (measurement length of 100 m).

  In the present invention, it is preferable that the number of entangled yarns of two or more types of multifilament crimped yarns constituting the intermingle yarn is 0 / m or more and 20 / m or less. In order to provide a high degree of mixing as the object of the present invention, it is preferable that the crimped yarn supplied to the high-pressure air nozzle is hardly entangled. Within such a range, a high degree of mixing can be obtained, and a natural frosted carpet without pattern flow can be achieved. If it exceeds 20 pieces / m, fiber mixing does not proceed at the time of interlace processing, the contrast becomes strong, and a carpet with a rough pattern is not preferable.

  In the present invention, the two or more types of multifilament crimped yarns constituting the intermingle yarn are preferably 15% or more and 35% or less. When it is less than 15%, crimping in the dyeing or backing process becomes insufficient when an intermingle yarn is used, the bulkiness and volume feeling are unsatisfactory, and the effect of preventing joint space is also insufficient. On the other hand, it is technically difficult to produce a crimped yarn having a latent crimp elongation rate exceeding 35% by a normal production method. Even if a crimped yarn exceeding 35% is obtained, it is subjected to dyeing and backing. When the carpet is finished, the occurrence of crimp is large, so that the pile is shrunk and the bulkiness may be lowered.

  The method for producing the multifilament crimped yarn constituting the intermingle yarn of the present invention may be applied by ordinary superheated fluid processing, for example, various types of wrinkles such as jet nozzle type, jet stuffer type, and gear system. Although a crimping method can be adopted, a jet nozzle method is preferable in order to achieve high crimping. Furthermore, a cooling device and further a rotary filter may be combined for the purpose of fixing crimps.

  Hereinafter, the method for producing an intermingle yarn in the present invention is not limited as long as two or more types of multifilament crimped yarns having different dyeing performance and / or color tone are mixed with a high-pressure air nozzle. There is no limit as long as it is about. In the example of FIG. 1, two or more types of multifilament crimped yarns having different dyeing performance and / or color tone are individually spun, drawn, and crimped, and once wound up, the high-pressure air nozzle is unwound. However, it is sufficient that two or more types of multifilament crimped yarns having different dyeing performance and / or color tone are arranged at the time when the high pressure air nozzle 6 is supplied. Absent. That is, the individually spun and stretched yarns may be wound once, and may be unwound and crimped at the same time, and then drawn together and supplied to the high pressure air nozzle 6. In this case, a plurality of types of drawn yarns may be supplied to the same crimping nozzle to impart crimps. Further, two or more kinds of different colored yarns may be spun, drawn and crimped in parallel at the same time, and then wound up once and then the different colored yarns may be drawn together and supplied to the high pressure air nozzle 6. good. A combination of these may also be used.

  In FIG. 1, three or more types of multifilament crimped yarns having different dyeing performance and / or color tone are used, and each crimped yarn is supplied in the direction of the arrow by the first roller 5 and guided to a high pressure air nozzle. . At that time, the crimped yarn supplied to the first roller 5 is stretched and pulled through the tension guide 4 with a tension of 0.20 mN / dtex or more and 1.00 mN / dtex or less. In such a range, since two or more types of multifilament crimped yarns having different dyeing performance and / or color tone are appropriately stretched, the present invention is excellent in bulkiness and has no pattern flow. A marbled carpet can be achieved. If it is less than 0.20 mN / dtex, sufficient stretch will not be applied, so the yarn length variation between single yarns and / or crimped yarns will be large, and the obtained intermingle yarn will be a crimped yarn with a long yarn length. The carpet occupies the surface and has a rough pattern, which is not preferable. On the other hand, when it exceeds 1.00 mN / dtex, a high stretch is applied, the fiber bundle is stretched completely, and it is difficult to obtain excellent bulkiness, which is not preferable.

  Each crimped yarn supplied to the first roller 5 is carried into the high-pressure air nozzle 6 and mixed, and is preferably processed at a high-pressure air flow rate of 500 L / min to 1250 L / min. If it is the said range, it is excellent in the bulkiness made into the objective of this invention, and the natural frost-like carpet without a pattern flow can be achieved. If the high-pressure air flow rate is less than 500 L / min, the fiber bundle is not sufficiently opened, and the desired high fiber mixing degree cannot be obtained, which is not preferable. On the other hand, if it exceeds 1250 L / min, the string vibration of the crimped yarn advances and the number of entanglement increases, so that the desired bulkiness may not be satisfied, which is not preferable. In addition, problems such as fluff occur and processing stability becomes insufficient, which is not preferable.

  Furthermore, the ratio of the thread passing maximum hole diameter in the high pressure air nozzle to the high pressure air injection hole diameter is preferably 1.0 or more and 1.7 or less. If it is in the above range, the desired degree of mixing and entanglement characteristics can be obtained, and a natural frosted carpet having excellent bulkiness and no pattern flow can be achieved. If it is less than 1.0, the degree of freedom of vibration of the fiber bundle is small, and fiber opening does not proceed. Further, since the amplitude of the string vibration is reduced, the wavelength per unit yarn length is shortened. That is, the number of entanglements increases and the desired bulkiness may not be satisfied, which is not preferable. On the other hand, if it exceeds 1.7, the degree of freedom of vibration of the fiber bundle is too large, so a uniform mixed entangled state is not formed in the longitudinal direction of the running yarn, and the maximum entanglement missing length and the number of entanglement missing more than 70 mm. The pattern flow is conspicuous and is not preferable.

  The high-pressure air nozzle 6 used in the present invention only needs to mix two or more types of multifilament crimped yarns having different dyeing performance and / or color tone with the high-pressure air nozzle 6, and does not impair the effects of the present invention. If so, there is no limit. In FIG. 2, the schematic of the running yarn carried in / out in a high pressure air nozzle is shown. The running yarn carry-in angle 12 and carry-out angle 13 to the high-pressure air nozzle 6 are preferably 20 ° or more and 60 ° or less in the direction of the high-pressure air injection hole. Within such a range, the desired degree of mixing and entanglement characteristics can be obtained, and a natural frosted carpet having excellent bulkiness and no pattern flow can be achieved. When the running-in / out angle of the running yarn is opposite to the high-pressure air injection hole, the running yarn is not affected by the high-pressure air jet flow, string vibration of the crimped yarn does not occur, and the desired degree of mixing and entanglement characteristics It is not preferable because it cannot be obtained. Also, if the angle is less than 20 ° in the direction of the high-pressure air injection hole, the frictional resistance between the running yarn and the high-pressure air nozzle is reduced, and the yarn path of the running yarn is not fixed. In other words, the crimped yarn is not opened by high-pressure air injection, so that the desired degree of mixing and entanglement characteristics cannot be obtained, and a carpet with a rough pattern is not preferable. On the other hand, when the angle exceeds 60 °, the frictional resistance between the running yarn and the high-pressure air nozzle is increased, the string vibration when crossing the high-pressure air nozzle injection hole is insufficient, the maximum entanglement length, and 70 mm or more The number of entangled parts increases, and the pattern flow is not easy to stand out.

The overfeed rate of the supply yarn to the high-pressure air nozzle 6 is preferably 0.1% or more and 2.0% or less. If it is the said range, since a crimped yarn will be stretch | stretched moderately, it is excellent in the bulkiness which is the objective of this invention, and can achieve the natural frost-like carpet without a pattern flow. If it is less than 0.1%, a high stretch is applied and the fiber bundle is fully stretched, which is not preferable because the bulkiness is insufficient. On the other hand, if it exceeds 2.0%, the running yarn becomes unstable, and problems such as yarn slack and yarn breakage may occur. The running yarn speed is preferably 300 or more and 1000 m / min or less. If it is less than 300 m / min, the processing time in the high-pressure air nozzle is long and the number of entanglements increases, which is not preferable because the bulkiness becomes insufficient. Moreover, productivity is reduced, leading to an increase in cost. On the other hand, if it exceeds 1000 m / min, the treatment time in the high-pressure air nozzle is shortened, and it is difficult to obtain a desired high fiber mixing degree, which is not preferable. In the present invention, the overfeed rate of the supply yarn to the high-pressure air nozzle is the rotation speed of the first roller 5 is R1 [m / min] and the rotation speed of the second roller 7 is R2 [m / min]. Then, the overfeed rate OF [%] is obtained by the following formula.
OF = {(R1 / R2) -1} × 100
After being mixed by a high-pressure air nozzle, it passes through the second roller 7 and is wound up by a winding roller 8 to obtain an intermingle yarn 8.

  The intermingle yarn having an entangled portion and a non-entangled portion mixed with two or more types of multifilament crimped yarns having different dyeing performance and / or color tone according to the present invention can be tufted, dyed and backed by a known method. Can be applied. The dyeing method can be used without any particular limitation, such as continuous dyeing, Wins dyeing, and rope dyeing.

  The frosted carpet of the present invention is a frosted carpet using the intermingle yarn of the present invention in at least 80% by weight or more of the pile yarn. By setting the ratio of the intermingle yarn of the present invention to 80% by weight or more of the pile yarn, a natural frosted carpet having excellent bulkiness and no pattern flow can be obtained.

  EXAMPLES Hereinafter, although this invention is demonstrated in detail using an Example, this invention is not limited at all by these Examples. In addition, the measuring method of each measured value in an Example is as follows.

(1) Sulfuric acid relative viscosity (ηr)
Using a polymer chip as a sample, 0.25 g of the sample was dissolved in 25 ml of 98% sulfuric acid, measured at 25 ° C. using an Ostwald viscometer, and obtained from the following equation.
ηr = seconds of flowing sample solution / seconds of flowing sulfuric acid alone The sulfuric acid relative viscosity (ηr) was determined from the average value of five samples.

(2) Total fineness JIS L1013 (2010) 8.3.1 b) The positive fineness was measured by the B method to obtain the total fineness.

(3) Single yarn cross-sectional shape A crimped yarn is cut in a direction perpendicular to the fiber axis, and the cross-section is photographed at 500 times using an optical microscope (VH-6300 manufactured by Keyence Corporation), and the single yarn cross-sectional shape is visually observed. confirmed.

(4) Latent Crimp Elongation Rate The skeined yarn is allowed to shrink for 3 hours in a room with a room temperature of 20 ° C. and a humidity of 65%. Next, it is immersed in boiling water for 20 minutes and subjected to boiling water treatment. Next, the skeined yarn treated with boiling water is left to dry in a room at a room temperature of 20 ° C. and a humidity of 65% for 12 hours. An initial load of 0.0176 mN / dtex is applied to the sample yarn, and after 30 seconds, the sample length is marked to 50 cm (A). Next, a constant load of 0.882 mN / dtex is applied to the sample, and the sample length (B) that has been extended after 30 seconds is measured. The latent crimp rate C [%] is obtained by the following formula.
C = {(B−A) / A} × 100
The latent crimp elongation rate was determined from the average value of 5 samples.

(5) Degree of blending Arbitrary yarns are cut at any position of the unentangled portion in the cross-sectional direction to form a group (block) out of the total number of single yarns (N ₀ ) of crimped yarns dyed in the same color. The number of crimped single yarns (N ₁ ) (average value of n = 10) is counted and obtained as a value represented by (N ₀ −N ₁ ) / N ₀ . In addition, the group (block) was defined as a group (block) of single yarns in which single yarns of 10% or more of the crimped yarns dyed in the same color were gathered.

(6) Entanglement characteristics LAWSON-HEMPHILL, Inc. EIB-E manufactured by EIB-E (Electronic Inspection Board for Entrainment) is used, and the diameter of the yarn is continuously observed for 100 m (measurement length: 100 m). Specifically, it is measured by the following method. First, in a state where a tension of 1/10 [mN / dtex] is applied to the yarn, the diameter of the yarn is measured 100 m continuously in the longitudinal direction at intervals of 5 mm. First, an average diameter Y [mm] is obtained from the average value of the 20001 yarn diameters thus obtained. Next, with a tension of 1/10 [mN / dtex] applied again to the 100 m yarn used to determine the average diameter Y, the yarn diameter was continuously measured. A node portion of 7 Y [mm] or less is defined as an entanglement point. Here, the node is a portion in which filament single fibers are entangled and converged and the diameter is smaller than before and after.

  The average value X of the number of entanglements per meter is obtained as a value [pieces] obtained by obtaining the number of entangled points per meter in the above measurement and averaging the obtained number of entangled points per 100 meters.

  The maximum entanglement length is obtained as the longest entanglement length in the above measurement (measurement length of 100 m). Here, the length of entanglement is the distance [mm] from one entanglement point to the next entanglement point.

  Further, the number of missing entanglements of 70 mm or more is obtained as the number [pieces] of portions where the distance from one entangled point to the next entangled point reaches 70 mm or more in the above measurement (measurement length of 100 m).

(7) Processing stability In the intermingle yarn manufacturing method shown in FIG. 1, the number of yarn breaks when processed for 5 hours under the manufacturing conditions of each example and comparative example was measured.

(8) Bulkiness A tufted carpet with a width of 1 m and a length of 10 m manufactured under the conditions described below was prepared, and the resilience of the carpet was judged by a five-step evaluation (1 to 5 points) by touching 10 monitors. . The better the resilience, the higher the score, and 4 or more points were accepted.

(9) Pattern flow A tufted carpet with a width of 1m and a length of 10m prepared under the conditions described below is prepared, and the pattern flow (carpet streaks) is visually evaluated on 10 monitors with a five-step evaluation (1 to 5 points). Judged. The higher the score, the higher the score.

(10) Frost tone adjustment Tufted carpet with a width of 1m and a length of 10m manufactured under the conditions described below is prepared, and frost reduction tone is visually observed on 10 monitors (each crimped yarn is densely mixed, natural shade) (Gradation of difference) was determined by a five-step evaluation (1 to 5 points). The higher the number of crimped yarns, the higher the score, and 4 or more points were accepted.

[Production of Acid-dye-dyed Regular Polyamide Crimped Thread (A-1)]
An acid dye-dyeable nylon 6 chip having a relative viscosity of sulfuric acid of 2.8, a melting point of 225 ° C. and a normal amino terminal group amount of 4.5 × 10 ⁻⁵ mol / g was melted with an extruder type spinning machine, and the spinning temperature Spinning was performed at 250 ° C. using a Y-type hollow die. The spun yarn is cooled and solidified by a uniflow type chimney, then stretched by applying an oil agent by an oiling roll, and then continuously wound at 220 ° C. and 0.8 MPa with a normal jet stuffer crimp nozzle without winding. Crimping was imparted by superheated steam, and after cooling and fixing with a rotary filter, entanglement was imparted by an entanglement nozzle to obtain a crimped yarn of 1100 dtex-68 filament.

[Manufacture of acid type dyeable yarn deep type polyamide crimped yarn (B-1)]
The amino terminal group (—NH ₂ ) amount of 4.5 × 10 ⁻⁵ mol / g is changed to a deep type having an amino terminal group (—NH ₂ ) amount of 7.2 × 10 ⁻⁵ mol / g, and a Y-type die is used. A 1000 dtex-54 filament crimped yarn was obtained in the same manner as in A-1, except for spinning.

[Manufacture of basic dyeable yarn cationic type polyamide crimped yarn (C-1, C-2, C-3)]
A cationic type nylon 6 chip having a relative viscosity of sulfuric acid of 2.8 and a sulfo end group (—SO ₃ ) amount of 4.6 × 10 ⁻⁵ mol / g was melted with an extruder type spinning machine, and the spinning temperature was 250 ° C. Spinning was performed using a mold hollow die. The spun yarn is cooled and solidified by a uniflow-type chimney, then stretched by applying an oil agent by an oiling roll, and then continuously steamed by an ordinary crimping nozzle without taking up once, with a steam pressure of 0.9 MPa and a nozzle temperature of 230 Crimp was imparted at 0 ° C., and after cooling and fixing, confounding was imparted by a confounding nozzle and wound up. Thus, a crimped yarn of 970 dtex-54 filament was obtained (C-1). Here, a crimped yarn in which the latent crimp elongation rate was changed by changing the crimp nozzle temperature was obtained (C-2). Moreover, the crimped yarn which changed the number of entanglements by changing the air pressure supplied to an entanglement nozzle was obtained (C-3).

[Examples 1-5, Comparative Examples 1-6]
Two types of acid dyed dyeable yarn regular type (A-1) and deep type (B-1) and three basic dyeable yarn cation type crimped yarns (C-1, C-2, C-3) Select at least one type from among the three types of crimped yarns, unwind them from the package and align them, and after mixing and entanglement with a high-pressure air nozzle, wind the yarn, Mingle yarn was obtained. Here, the manufacturing method uses the manufacturing method shown in FIG. 1, and the stretch tension of the crimped yarn supplied by unwinding from the package, the high-pressure air flow rate, and the maximum diameter of the thread passing through the high-pressure air nozzle with respect to the high-pressure air injection hole diameter. Table 2 shows the manufacturing conditions such as the ratio, the yarn carrying-in / out angle to the high-pressure air nozzle and the overfeed rate, the processing stability during the production, and the characteristics of the obtained intermingle yarn.

Next, the obtained intermingle yarn was used as a pile yarn and tufted with a 1/10 gauge, a basis weight of 600 g / m ² and a pile height of 4.0 mm to obtain a tufted carpet. Subsequently, dyeing was performed in a bath containing an acidic dye and a basic dye using a Wins dyeing machine, and the bulkiness, pattern flow and frost adjustment of the obtained tufted carpet were evaluated. Table 2 shows the determination results.

  In Example 1, the processing stability is good, the latent crimp elongation rate of intermingle yarn, the blending degree and the entanglement characteristics are also good, and the resulting carpet is naturally bulky and has no pattern flow. It had a marbling pattern.

  In Example 2, although the stretch tension of the crimped yarn was high and the latent crimp elongation rate of the obtained intermingle yarn was lowered, the obtained carpet had a bulkiness within an allowable range.

  In Example 3, although the high-pressure air flow rate was low, the intermingle yarn obtained had a reduced degree of mixing, and the maximum entanglement length and the number of entanglements were increased, but the resulting carpet had a natural frosting within an acceptable range. Had a tone.

  In Example 4, although the high-pressure air flow rate was high and the latent crimp elongation rate decreased as the number of intermingle yarns obtained increased, the resulting carpet had a bulkiness within an acceptable range. It was.

In Example 5, the ratio of the maximum thread passing hole diameter in the high-pressure air nozzle to the high-pressure air injection hole diameter is low, and there is a decrease in the degree of blending of the obtained intermingle yarn and a decrease in the latent crimp elongation rate due to an increase in the number of entanglements. Although seen, the resulting carpet had acceptable bulkiness and natural frosting.
On the other hand, in Comparative Example 1, the latent crimp elongation rate of the obtained intermingle yarn is lowered by using the basic dye dyeable yarn cationic type crimp yarn (C-2) having a low latent crimp elongation rate. The bulkiness of the resulting carpet was insufficient.

  In Comparative Example 2, the use of a basic dye dyeable yarn cation type crimped yarn (C-3) with a large number of entanglements resulted in a low degree of intermingle yarn mixing, and the resulting carpet frosting was It was insufficient.

  In Comparative Example 3, the flow rate of high-pressure air is low, the intermingle yarn obtained has a reduced degree of mixing, the maximum length of entanglement and the number of entanglements are increased, and the bulkiness of the resulting carpet is within an acceptable range. However, the pattern flow was observed, and the frost adjustment was insufficient.

  In Comparative Example 4, the flow rate of high-pressure air was high, the latent crimp elongation rate decreased with an increase in the number of intermingle yarns obtained, and the bulkiness of the resulting carpet was insufficient.

  Comparative Example 5 has a low running yarn carry-in angle into the high-pressure air nozzle. Although the bulkiness of the resulting carpet was within an allowable range due to a decrease in the degree of mixing and an increase in the maximum entanglement length, the pattern flow was As seen, frost adjustment was inadequate.

  Comparative Example 6 has a low run-in and carry-out angle into the high-pressure air nozzle, a decrease in the degree of mixing, an increase in the maximum entanglement length and the number of entanglement failures, and the bulkiness of the obtained carpet is within an allowable range. However, the pattern flow was observed, and the frost adjustment was insufficient.

  The intermingle yarn of the present invention can be suitably used for tufted carpets, can produce a natural frosted pattern with excellent bulkiness and no pattern flow, and is particularly suitable for frosted carpets. It is what is done.

1: Acid dyed dyeable yarn Regular type crimped yarn 2: Acid dyed dyeable yarn Deep type crimped yarn 3: Basic dyeable dyed yarn Cationic type crimped yarn 4: Tension guide 5: First roller 6 : High pressure air nozzle 7: Second roller 8: Winding roller 9: Intermingle yarn 10: Multifilament crimped yarn 11 carried into the high pressure air nozzle 11: Intermingle yarn carried out from the high pressure air nozzle 12: To the high pressure air nozzle Thread run-in angle of 13: Thread run-out angle from high-pressure air nozzle 14: Injection direction of high-pressure air supplied to high-pressure air nozzle

Claims (5)

An intermingle yarn having an entangled portion and a non-entangled portion mixed with two or more types of multifilament crimped yarns having different dyeing performance and / or color tone, and satisfy the following requirements (1) to (5) Intermingle yarn characterized by
(1) Potential crimp elongation rate is 15% or more and 35% or less (2) Mixing degree of non-entangled part is 65% or more and 100% or less (3) Average value of entanglement number per 1 m is 20 or more and 38 or less ( 4) Maximum entanglement length is 30 mm or more and 100 mm or less. (5) Number of entanglement loss of 70 mm or more is 0 or more and 5 or less.   The intermingle yarn according to claim 1, wherein the number of entanglement of two or more types of multifilament crimped yarns constituting the intermingle yarn is 0 / m or more and 20 / m or less.   The intermingle yarn according to claim 1 or 2, wherein a latent crimp elongation rate of two or more types of multifilament crimped yarns constituting the intermingle yarn is 15% or more and 35% or less. Two or more types of multifilament crimped yarns having different dyeing performance and / or color tone are stretched at 0.20 mN / dtex or more and 1.00 mN / dtex or less before being mixed using high-pressure air, respectively. A method for producing an intermingle yarn, wherein the yarns are aligned and mixed under the following conditions.
(1) High-pressure air flow rate is 500 L / min or more and 1250 L / min or less (2) The ratio of the maximum thread passing hole diameter in the high-pressure air nozzle to the high-pressure air injection hole diameter is 1.0 or more and 1.7 or less (3) High-pressure air nozzle Heft running yarn loading / unloading angle is 20 ° or more and 60 ° or less in the direction of the high-pressure air injection hole   A frosted carpet, wherein the intermingle yarn according to any one of claims 1 to 4 is used in at least 80% by weight or more of pile yarn.