JP2005163216A - Warmth-keeping auxiliary sheet, and rug and stole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a warmth-keeping auxiliary sheet excellent in soft touch, warmth-keeping tendency and fittedness. <P>SOLUTION: The warmth-keeping auxiliary sheet is a knitted fabric having looped pile yarn structure. In this sheet, the looped pile length is 0.3-10 mm from the base, and extra-ultrafine synthetic fibers of 0.7-0.00001 dtex are contained at 5 wt.% or greater, based on the whole knitted fabric, in the looped pile yarns and/or ground yarns. Rugs and stoles each comprising such a warmth-keeping auxiliary sheet are also provided respectively. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a heat retention auxiliary sheet, a lap rest, and a shoulder rest excellent in soft texture, heat retention and adhesion.

  Conventionally, the quilt used is made of a blanket, thick felt, thick pile, or the like.

  However, these materials are mainly composed of normal synthetic fibers having a single fiber fineness of 1.5 to 3.5 dtex, and in some cases include natural fibers such as cotton. It existed. Therefore, the texture was rough and hard to touch.

  Furthermore, pile knitted fabrics (see Patent Documents 1 and 2) using ultrafine fiber yarns of less than 1.0 decitex have also been proposed, but these were not developed as heat retention auxiliary sheets, but artificial It is designed for use in winter clothing such as fur, inevitably having different performance, and the napped portion is made of cut pile yarn. The yarn has a strong converging force and becomes a brush-like shape (especially in the case of ultra-fine cut-pile yarn), and since there is no fine gap between yarn and yarn, the water absorption effect is poor or the pile yarn is There are problems such as curling, tangling between napped yarns, becoming a fuzz, causing significant hindrance to surface quality, and particularly poor adhesion.

Therefore, at present, a warm auxiliary sheet having a soft texture and surface quality, as well as excellent heat retention and adhesion has not yet been found.
Japanese Patent Publication No. 61-10588 Japanese Patent Publication No. 61-52257

  In view of the background of such prior art, the present invention is intended to provide a new warming auxiliary sheet having a soft texture and surface quality, and further excellent in warmth and adhesion, and more specifically, For example, when used on a lap or shoulder, it does not provide a heat retention auxiliary sheet that shows a very soft texture and surface quality, and that is in close contact with clothing and that can reliably keep the area that you want to keep warm and resistant to slippage. It is what.

  The present invention employs the following means in order to solve such problems. That is, the heat retention auxiliary sheet of the present invention is a knitted fabric having a loop pile yarn structure, the loop pile length is 0.3 to 10 mm from the base portion, and 0 in the loop pile yarn and / or the ground yarn. 0.7 to 0.00001 decitex ultrafine synthetic fiber is contained at least 5% by weight based on the total weight of the knitted fabric. In addition, the lap and the shoulder of the present invention are characterized by being configured of such a heat retention auxiliary sheet.

  According to the present invention, it is possible to provide a heat retention assisting sheet having a soft texture and surface quality, and also excellent heat retention and adhesion. For example, when used for a lap or shoulder, the touch is good and is suitable for clothes. It is possible to provide a device that can adhere to each other and reliably protect a portion that is difficult to shift and that is to be kept warm.

  Hereinafter, the heat retention auxiliary sheet of the present invention will be described in more detail.

  In this invention, a heat retention auxiliary sheet | seat is comprised including the super extra fine synthetic fiber of 0.7 decitex-0.00001 decitex.

  In the present invention, such ultrafine fibers of 0.7 dtex or less can be produced by various methods as exemplified below, and any of these can be produced by methods other than these methods. Those that have been prepared can also be used in the present invention.

  In other words, even if it is made by a method using a polymer cross-arrangement fiber generally called sea-island type composite fiber, or further, the island component is made from a polymer inter-array fiber called sea-island type composite fiber. Also good. The sea component may be separated by a solvent or a decomposing agent, or may be separated like a peelable split fiber composed of two components A and B. In the direct spinning method, the spinning setting conditions may be made strict as appropriate. Further, the separation-type split fibers composed of two or more components may be used for separation, and in short, those having a single fiber fineness of 0.7 dtex or less are used.

  In the present invention, when the ultra-fine synthetic fiber is present in the loop pile yarn and / or the ground yarn of the heat insulation auxiliary sheet, a structure like a mesh-like micro dropper structure or a micro sponge structure is formed in the gap between the constituent fibers. Therefore, the presence of this structure gives a very soft texture to the heat retention assisting sheet of the present invention, and also provides a very effective water absorption and water retention capability.

  In order to form such a mesh-like cross-dropper structure or micro-sponge structure, the single fiber fineness of the fibers forming the loop pile yarn and / or the ground yarn of the heat retention auxiliary sheet is very important, and the single fiber fineness is 0 It is essential to use an ultrafine synthetic fiber of 0.0001 dtex or more and 0.7 dtex or less, preferably 0.00001 dtex or more and 0.5 dtex or less, more preferably 0.001 dtex or more and 0.2 dtex or less. Is to use.

  Such ultrafine synthetic fibers are preferably contained in an amount of 5% by weight or more, more preferably 20% by weight or more, and most preferably 35% by weight or more based on the total weight of the heat retention auxiliary sheet. If it is less than 5% by weight, it is difficult to sufficiently exert the function of the ultrafine synthetic fiber, and it becomes difficult to obtain the desired water absorption and soft texture.

  Such ultrafine synthetic fibers may be used in any form of filaments and staples. However, it is preferable to use them as filament yarns because fiber dropping is less than when they are used as span yarns.

  In the present invention, it is important that the pile structure is a loop pile. That is, by forming such a loop pile with ultrafine synthetic fibers, it is possible to provide a heat retention assisting sheet having excellent adhesion. In other words, clothing is generally composed of spun yarn, and the short fluff of the spun yarn exhibits the function of a male sheet of a so-called hook-and-loop fastener, and the loop pile of the heat retention auxiliary sheet of the present invention is The function of the female sheet of the hook-and-loop fastener is exhibited, and the effect of not being displaced by exerting close contact with clothes is exhibited. This loop pile is difficult to sag and also exhibits the function of maintaining a soft texture. On the other hand, in the case of cut piles, even if ultra-fine fibers are used as such pile fibers, the piles become tangled, pilling occurs during use, and further, the piles sag, causing problems in quality and performance. In addition, the adhesiveness as in the present invention is poor, it is easy to shift, and it is not possible to reliably protect the part to be kept warm.

  Any means can be used as a means for forming such a loop pile knitted fabric as long as it is constituted by a conventionally known warp knitting structure or weft knitting structure. Specifically, for example, a loop pile knitted fabric such as a circular knitting, a tricot knitting, and a raschel knitting having a pile structure on one side or both sides can be used.

  From the viewpoint of the effect of the present invention, the ultrafine synthetic fiber is used at least for the loop pile yarn and, of course, the ground yarn.

  By using this super extra fine synthetic fiber also in the ground yarn portion of the present invention, the above-described microdropper or micro sponge structure is also formed in the ground tissue portion. A soft texture will be demonstrated together with the water retention performance. That is, in this case, the moisture is first caught on the pile yarn side, and the moisture is transferred to the micro-dropper or micro-sponge structure side in the ground structure by a capillary phenomenon, etc. By holding the captured water, it becomes a mechanism that exerts its effect, so that latent heat of vaporization is not taken and a more effective heat retention effect can be achieved. The

  In the heat retention assisting sheet of the present invention, it is the best mode to include a superfine synthetic fiber in both the ground texture portion and the pile yarn portion. The texture, water absorption and water retention performance will be demonstrated. In this case, the ultrafine synthetic fiber on the ground yarn side may be configured to be thinner than the ultrafine synthetic fiber of the loop pile yarn so that moisture can be more easily transferred to the ground yarn side. Then, the microdropper or micro sponge structure constructed on the ground yarn side has finer voids, so that moisture on the loop pile yarn side is very much on the ground yarn side due to capillary action. A structure that can be easily transferred can be formed.

  Further, in the heat retention auxiliary sheet of the present invention, in addition to the ultrafine synthetic fiber, other appropriate fibers may be mixed and used. The mode of mixing and use is a mode of mixed fiber, knitting or knitting. Either is acceptable. As the other fibers, natural fibers such as cotton can be used. For example, a combination of using ultra-fine synthetic fiber for the loop pile yarn and using cotton for the ground structure, or the reverse combination may be used.

  In the present invention, the length of the loop pile and the number of fibers constituting the loop pile yarn are important factors in determining good adhesion, water absorption, water retention performance, or soft feel.

  That is, if the loop pile length or the number of constituent yarns is inappropriate, the hook-and-loop fastener effect, that is, the adhesion effect is particularly weakened. Furthermore, the fine mesh structure described above is not effectively formed, and it is difficult to obtain a good capillary phenomenon, and the heat retention, water absorption, and water retention effect may be weakened, which is not desirable.

  From such a point, it is important that the loop pile length is 0.3 to 10 mm from the base portion, and more preferably 2 to 6 mm. The loop pile length here is a length measured from the base portion by pulling the loop pile to be measured with tweezers. Further, the number of loop piles is indicated by the number of constituent fibers per loop pile yarn, but this number is preferably larger and more preferably 280 or more.

  In the present invention, the loop pile length is represented by the length (height) when the loop pile stands upright.

  The heat insulation auxiliary sheet of the present invention, when ultrafine fibers are used as loop pile yarns, the loop pile yarns cover the sheet surface with a three-dimensional structure, and extremely fine pores between the piles and between the fibers constituting the piles. Is configured infinitely, and the above-described microdropper structure or microsponge structure is configured.

  These loop piles look like a cotton candy when viewed from the side, a fine and three-dimensional web, or a dense net-like shape when viewed from the plane.

  Therefore, when moisture and air are sucked into such fine and infinite holes, good heat retention, water absorption, water retention, and soft feeling are exhibited. Furthermore, since the water once trapped in this manner is sequentially drawn into the interior between the fine fibers and the fibers so as not to be released again, the feature of excellent moisture retention capability is also exhibited. .

  When ultrafine fibers are used for the ground yarn, the above-described microdropper structure or microsponge structure is formed in the ground tissue portion.

  In addition, it is preferable to use crimped yarn or a real twisted yarn having an appropriate number of twists for the ultrafine fiber because it imparts a void effect or an appropriate convergence and enhances the water capillary phenomenon.

  As the crimped yarn, a difference in yarn length is imparted by applying heat treatment to an actual crimped yarn such as false twisted yarn or air entangled yarn or a composite fiber composed of two or more kinds of fiber components having different heat shrinkage rates. Thus, latent crimped yarns that cause crimps to develop can be used.

  Further, as the actual twisted yarn, a real twisted yarn having a twist number in the range of 1 to 500 t / m obtained by a processing machine such as an Italy twisting machine can be used favorably. When such a real twisted yarn is used, if the number of twists is more than 500 t / m, the convergence property of the fiber is generally excessive, which is not preferable from the viewpoint of forming a microdropper or microsponge structure. A preferable real twist number is 10 to 300 t / m, more preferably 10 to 200 t / m, although it depends on the total fineness of the ultrafine fiber bundle.

  The heat-insulating auxiliary sheet of the present invention, which has been made well, shows a very high water absorption performance of generally 80 mm or more or even 100 mm or more in a water absorption test (JIS-L1018 B method) described later. By the way, the conventional normal lap and shoulder are up to about 70 mm.

  It is also preferable to produce a fabric by mixing or knitting and knitting ultrafine synthetic fibers and cotton because performance can be more effectively imparted.

  For example, when ultrafine fibers are used as pile yarns and cotton yarn is used as the base portion, the water absorption is obtained by the microdropper structure formed by the ultrafine loop pile yarns, and the cotton yarn forming the base portion allows moisture to be absorbed. By further promoting the retention capacity, the amount of retained water can be increased and the water absorption performance can be further enhanced.

  It is preferable that the ultrafine fiber is formed and knitted using a multicomponent fiber, and then one component of the fiber is removed and / or separated to form the ultrafine fiber because voids can be effectively obtained.

  Examples of the method for removing one component include a method using a solvent treatment, a method using a weak alkali solution, a method using both acid treatment and alkali treatment, and a method using hot water treatment. These may be used by selecting an appropriate method depending on the type of polymer forming the multicomponent fiber.

  In particular, a treatment method using only hot water (temperature 60 to 120 ° C., pH 4 to 7) is preferable as a treatment method in the case of mixing with cotton or knitted fabric. That is, it is possible to remove one component and make it ultrafine without substantially harming cotton.

  Examples of the polymer include terephthalic acid, a copolymer of isophthalic acid and 5-sodium sulfoisophthalic acid, and the like.

  In addition, various known methods can be used, for example, specifically using benzyl alcohol, in order to obtain an ultrafine fiber of 0.7 denier or less by separating using a split-type split fiber composed of two or more components. The separation method is a common method.

  The ultra-thinning treatment is performed by using appropriate means after knitting and weaving using multi-component fibers as pile yarn and / or ground yarn, simultaneously with heat treatment, or after heat treatment. Or it is preferable from the formation property of a micro sponge structure. The heat treatment referred to here is a dry heat treatment or steam heat treatment at 100 ° C. or higher, such as a raw machine set or an intermediate set, or a hot water treatment at 60 ° C. or higher, such as hot water washing or scouring, and latent crimped yarn was used. In the case, it means dry heat, steaming or hot water treatment for developing crimp.

  As described above, the heat retention auxiliary sheet of the present invention has a good water absorption performance due to the micro-dropper or micro sponge structure formed by the ultra-fine loop pile, and also has excellent adhesion or soft texture. It is something that demonstrates.

  It is also preferable that the heat retention auxiliary sheet of the present invention is subjected to hydrophilic processing, water absorption treatment, antibacterial treatment, deodorization, sanitary treatment, etc., either alone or in combination before and after knitting.

  Furthermore, it is also preferable to use a copolymer fiber in which a hydrophilic group is introduced into the pile yarn and / or the ground yarn, or to perform knitting using a fiber imparted with hydrophilicity by post-processing.

  In the heat retention auxiliary sheet of the present invention, the elongation rate under a constant load of 1.5 kg measured based on JIS L-1018 is preferably 5 to 30%, more preferably 10 to 20% in both the wale direction and the course direction. Those having stretchability in the range of 1 are preferable from the viewpoint of ensuring adhesion. In other words, since the heat retention auxiliary sheet is used by attaching to the body such as the waist and shoulders, it is possible to more reliably secure the adhesion effect by the loop fastener by the loop pile by expanding and contracting following the movement of the body. It is something that can be done. If the stretchability is less than 5%, it is difficult to ensure adhesion, and it is easy to fall. If the stretchability exceeds 30%, there is no restriction on the movement of the body, but conversely the heat retention and water absorption will decrease. It is not preferable.

Insulation auxiliary sheet of the present invention, is preferably bulky when viewed by the reciprocal of the apparent density measured for weight per unit volume 8~20cm ³ / g, and even more preferably 10 to 15 cm ³ / g, It is preferable from the viewpoint of ensuring heat retention. In other words, since the heat retention auxiliary sheet is used to keep a specific part of the body such as the waist and shoulders warm, it is important to reliably maintain the body temperature. Sex is required. When the bulkiness is less than 8 cm ³ / g, it is difficult to ensure heat retention, and when the bulkiness exceeds 20 cm ³ / g, it is not preferable because it becomes difficult for the body to move.

  Since the heat retention auxiliary sheet of the present invention is difficult to shift and difficult to fall off, the heat retention assist sheet is particularly preferably used as a knee or shoulder for keeping a specific part of the body such as the waist or shoulder. However, not only can a specific part of the body be kept warm, but this can also be used as a blanket. In other words, when the heat-retaining auxiliary sheet of the present invention is used instead of blankets, it does not slip out due to close contact with sleepwear, pajamas, nightgowns, etc., so it is less likely to get chilled or cold, and is particularly suitable as a cloth for infants.

  EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited or limited by these examples.

  In addition, the water absorption in an Example, the wiping off of the water | moisture content of the hair after hair washing, and the measurement of a feel were based on the following method.

  Water absorption: Measured based on JIS L-1018 B method (Byreck method).

  Adhesiveness: Judged by a monitor test by five panelists.

  Feeling: Tactile sensation was judged by 5 panelists.

A: Very good B: Good X: Bad Elasticity: Measured based on JIS L-1018. However, it was expressed as an elongation rate under a constant load of 1.5 kg.

  Bulkiness: The weight per unit volume was measured, the apparent density was calculated, and the reciprocal was displayed.

Example 1 and Comparative Example 1
Polyethylene terephthalate yarn in which two multifilament yarns of 82.5 decitex and 96 filaments are combined as loop pile yarn, while 137.5 decitex, 20 filaments and 36 island components are used as ground yarn. The island / sea ratio (weight ratio) is 78/22 (the island single yarn fineness after elution of the sea component is 0.143 dtex), the island component is polyethylene terephthalate, and the sea component is a false twisted yarn made of polystyrene. A double-sided loop pile knitted fabric was knitted with a double-sided pile circular knitting machine.

  The knitted fabric was heat-treated at 80 ° C. for 20 minutes in a liquid dyeing machine, and then dehydrated and dried.

  Next, the ground yarn was subjected to ultrafine processing while changing the solution while carrying out the treatment in the trichloroethylene solution, and then dried with the tumble dryer.

  In this way, a heat retention auxiliary sheet made of a loop pile knitted fabric having a loop pile length of 1.2 mm and the number of the ultrafine fibers per ground yarn of 720 was obtained.

  The content of 0.143 decitex ultrafine fibers used for the ground yarn was 32% by weight based on the total weight of the knitted fabric.

The expansion / contraction rate of this heat retention auxiliary sheet was 15% vertical and 20% horizontal, the bulkiness was 12.5 cm ³ / g, and the water absorption was 115 mm by the Bayrec method.

  Further, as Comparative Example 1, a kneeling made of cut pile woven using the same woven design using 30 s / 1 cotton yarn, which has been conventionally used for kneelings, instead of the pile yarn made of ultrafine fibers was prepared.

The surface of this product was a cut pile, inferior in adhesion and soft texture (x), and further inferior in quality with hazyness and wrinkles. The expansion / contraction rate of the heat retention auxiliary sheet of this comparative example was a woven fabric, both vertical and horizontal were almost 0%, the bulkiness was 5.5 cm ³ / g, and the water absorption was 65 mm by the Bayrec method.

  Using these heat retention assist sheets for kneeling, five women were selected and a monitor test was conducted. Also, adhesion was measured.

  As a result, compared with the lap of Comparative Example 1, Example 1 had excellent softness (（) and adhesion, and excellent heat retention, water absorption, and water retention effect.

Claims (10)

It is a knitted fabric having a loop pile yarn structure, the loop pile length is 0.3 to 10 mm from the base portion, and 0.7 to 0.00001 decitex ultra-fine fine in the loop pile yarn and / or the ground yarn A heat retention auxiliary sheet comprising at least 5% by weight of synthetic fiber based on the total weight of the knitted fabric. The heat retention auxiliary sheet according to claim 1, wherein the number of constituent fibers of the ultrafine synthetic fiber per loop pile yarn and / or ground yarn is 280 or more. The heat retention assisting sheet according to claim 1 or 2, wherein the ultrafine synthetic fiber has crimps. The heat insulation auxiliary sheet according to any one of claims 1 to 3, wherein the loop pile yarn and / or the ground yarn is a real twist yarn of 1 to 500 t / m. The heat retention auxiliary sheet according to any one of claims 1 to 4, wherein the loop pile yarn and / or the ground yarn is a mixed yarn in which cotton fibers are mixed with the ultrafine synthetic fiber. The heat retention according to any one of claims 1 to 5, wherein the ultrafine synthetic fiber on the ground yarn side of the knitted fabric is composed of a single fiber thinner than the ultrafine synthetic fiber on the loop pile yarn side. Auxiliary sheet. The heat insulation assisting sheet according to any one of claims 1 to 6, wherein the knitted fabric is composed of a warp knitting structure or a weft knitting structure. The stretch rate under a constant load of 1.5 kg measured based on JIS L-1018 of the knitted fabric is in the range of 5 to 30% in both the wale direction and the course direction. A heat retention auxiliary sheet according to any one of the above. A kneeling comprising the heat retention assisting sheet according to any one of claims 1 to 8. A shoulder rest comprising the heat retention auxiliary sheet according to any one of claims 1 to 8.