JP2013144860A - Double raschel knitted fabric with piles projecting from front knitted fabric surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double raschel knitted fabric which is excellent in breathability and lightweight properties, and in which a front knitted fabric surface exhibits engaging ability and appearance stability as a B-side fastener member.SOLUTION: The double raschel knitted fabric includes a front knitted fabric, a back knitted fabric, and a connection part. In the double raschel knitted fabric, a knitted structural unit of a pile yarn forming a front knitted fabric surface has at least one blind-lapping portion following one over-lapping portion, and a needle loop of the pile yarn projects from the front knitted fabric surface. Preferably, the direction of under-lapping of a tightening yarn in the same course as under-lapping of the pile yarn before the blind-lapping thereof is opposite to the direction of the under-lapping of the pile yarn. An over-lapping portion of the tightening yarn exists in the same course as the blind-lapping portion of the pile yarn. The tightening yarn is a heat-fusible yarn. After heat treatment, the lower part of the needle loop of the pile yarn is fixed by the heat-fusible yarn in the front knitted fabric. The double raschel knitted fabric functions as a B-side fastener member and can be suitably used as a supporter material.

Description

  The present invention relates to a double raschel knitted fabric in which a needle loop of a pile yarn protrudes from the surface of a surface knitted fabric, specifically, a double raschel knitted fabric integrated with a B-side (female) fastener, Further, the present invention relates to a double raschel knitted fabric which is excellent in air permeability and light weight and hardly deteriorates in appearance even when used as a B surface fastener.

Corsets, supporters, etc. for fixing, correcting, assisting, correcting or protecting the body by wearing it on the trunk or limbs require a certain degree of strength and elasticity, and are flexible, light, Easy integration is also required. Therefore, products using neoprene rubber, elastomer, or the like as a material and provided with a hook-and-loop fastener at the end as an engaging portion have been used. However, when rubber or the like is used as the material, the air permeability is poor, and even if the portion directly in contact with the skin is covered with a fabric in order to prevent the material from being rashed, the skin is easily damaged. Furthermore, the stretchability of the material and the hook-and-loop fastener fixed as an engaging tool on the material is considerably different, and a portion that is not easily stretched locally is generated. Therefore, the feeling of use and durability are inferior.
Therefore, a product in which an A-side and / or B-side fastener is laminated on the surface of a double raschel knitted fabric instead of rubber or the like is on the market. However, when the B-side fastener is fused or adhered to the surface of the double raschel knitted fabric, there is a problem that the air permeability is low and the appearance is inferior, and there is a possibility of peeling during use. In addition, when an adhesive is used, a drying and curing step is required, and the production efficiency is poor. On the other hand, melt bonding has an environmentally undesirable problem due to generation of nitrogen oxides and the like.

  Therefore, Patent Document 1 includes an upper fabric layer made up of a stitched yarn and a back yarn and having a raised surface, an outer fabric layer made up of a stitch yarn and a back yarn, and an interconnecting yarn for connecting them 3 A two-dimensional composite fabric warp knitted fabric is generally used as a belt-like B-side fastener material, and an A-side (male) fastener is attached to the end thereof (claim 17 of the same document).

  On the other hand, in furniture chairs and vehicle seats, focusing on the air permeability of a double ratchet knitted fabric in which front and back ground structures are connected by connecting yarns, a spacer fabric or a double raschel solid base fabric with raised one side has been proposed as a sheet material ( Patent Documents 2 and 3). The seating portion of the seat is usually configured by laminating materials in the order of the backing material, the cushion material, and the surface sheet. However, a hook-and-loop fastener is often used as a fixture for these laminated materials. . In that case, considering the breathability, cushioning, and appearance stability when sitting on a chair, a hook-and-loop fastener combined with a double raschel knitted fabric is theoretically possible, but it has a B-side fastener function with sufficient engagement strength. The double raschel knitted fabric is still unknown.

Japanese Patent Laid-Open No. 2001-11759 International Publication WO95 / 12019 Pamphlet JP 2008-127730 A

  The three-dimensional composite fabric product of Patent Document 1 aims at bi-directional stretchability, recoverability, and compressibility, and the engagement strength as a B-surface fastener and the strength of the fabric product itself are not so important. Therefore, in this document, the surface of a normal double raschel knitted fabric is raised by napping, sanding, brushing or the like to form a B-side fastener (paragraph 0015 of the same document), and therefore the strength of the fabric product itself is inferior. It was. Furthermore, in the same document, since the cloth is pasted on the back side of the raised surface and used for medical end use (paragraph 0030 of the same document), the manufacturing process is complicated and expensive, and sufficient air permeability is achieved. I couldn't. In addition, the fabric product of Patent Document 1 is repeatedly inferior in appearance and durability because the interconnecting yarn forming the same structure as the upper fabric layer is pulled by repeatedly raising and engaging and detaching the hook element. There were also problems that were lacking.

On the other hand, the products of Patent Documents 2 and 3 are spacer fabrics used for a skin material such as a vehicle sheet, and the raising of the surface is intended to enhance functionality such as heat retention and heat insulation. Therefore, when the two-side warp knitted fabrics of these documents are used as a B-side fastener, as in Patent Document 1, it is impossible to engage with the A-side (male) fastener, Is not suitable, the appearance is impaired by desorption.
Based on such a conventional double raschel knitted fabric, trying to manufacture a B-side fastener, increasing the amount of pile yarn supplied to the extent that the pile yarn does not get entangled during knitting, and forming loose stitches that are easily caught by raised needles, etc. Thus, even if raising treatment was performed, a surface having suitable engagement strength was not obtained.

  The present invention has been made to solve the above-mentioned problems, and its purpose is a double raschel knitted fabric which is excellent in engagement strength, air permeability and light weight, and whose appearance is hardly deteriorated even when used as a B surface fastener member. Therefore, it is an object that can be stably manufactured by a normal warp knitting machine.

The present invention is as follows.
(1) A double raschel knitted fabric composed of a front knitted fabric, a back knitted fabric, and a connecting portion for connecting both facing knitted fabrics with a connecting yarn, and knitting a pile yarn forming the surface of the front knitted fabric A double raschel knitted fabric in which one or more blind wraps are present in the tissue unit, followed by one or more blind wraps, and the needle loop of the pile yarn protrudes from the surface of the surface knitted fabric.
(2) The double raschel knitted fabric according to (1), wherein the knitted fabric is knitted with the pile yarn feeding ratio set to overfeed.
(3) The double wrap according to (1) or (2), wherein the underlap between the overlap of the pile yarn and the next blind wrap is opposite to the underlap of the fastening yarn forming the surface of the surface knitted fabric Russell knitting.
(4) The double raschel knitted fabric according to any one of (1) to (3), wherein in the knitting structure unit of the surface knitted fabric, an overlap of the fastening yarn exists in the same course as the blind wrap of the pile yarn.
(5) The fastening yarn of the surface knitted fabric is a heat-sealing yarn, and the needle loop lower part of the pile yarn is fixed in the surface knitted fabric by the heat-sealing yarn by heat treatment, and the double according to any one of (1) to (4) Russell knitting.
(6) A B-side fastener member comprising the double raschel knitted fabric according to any one of (1) to (5) above.
(7) A supporter attached to the trunk or limb, using the B surface fastener member according to (6) above.
(8) The front knitted fabric is knitted with a pile yarn kite and a fastening yarn kite and at least one connecting yarn kite, and the back knitted fabric is knitted with another at least one kite and a connecting yarn kite, The manufacturing method of the double raschel knitted fabric in any one of (1)-(5) which knits the connection part which connects the ground organization of front and back with the hook for connecting yarns.

The double raschel knitted fabric of the present invention can be produced without the need for an adhesion process or a lamination process, and is excellent in engagement, breathability, and lightness. Therefore, it is suitable as a spacer fabric material having a B-side fastener on the surface. is there. The lower part of the needle loop of the pile yarn on the surface knitted fabric surface of the present invention is preferably fixed by a heat-sealing yarn, and the pile yarn and the connecting yarn do not move due to the engagement / desorption of the hook-and-loop fastener, and the appearance deteriorates. Excellent durability because it is difficult.
Since the double raschel knitted fabric of the present invention has a high shear strength and can be manufactured so that the peel strength is not so large, it exhibits a strong engagement for pulling in the side and is easy to be detached by pulling in the vertical direction. An excellent B surface fastener with a small desorption sound is obtained. Therefore, it is particularly suitable as a material for clothing and medical / hygiene products, especially tools for attaching, fixing, correcting, assisting, correcting or protecting the body by attaching to the trunk or limbs such as back pain bands, corsets, supporters, belts, etc. It is.

It is the schematic which shows a part of double raschel knitted fabric of this invention. It is a side view of the knitting principal part of the warp knitting machine which has the double row knitting needle row used in order to knit the double raschel knitted fabric which is one mode of the present invention. 4 is a front needle hook, 5 is a rear needle hook, 6 is a knitting needle arranged in parallel with the front needle hook 4 to form a front needle row F, and 7 is parallel to the rear needle hook 5. The rear needle row B is formed by the knitting needles formed as described above. The pile yarn 12 and the fastening yarn 13 are ground yarns, which are threaded through the collars 22 and 23 to knitting the front knitted fabric 1 together with the connecting yarns. 15 and 16 are also ground yarns which are threaded through the collars 25 and 26 to knitting the back knitted fabric 3 together with the connecting yarns. The connecting yarn 14 is threaded through a reed 24 and connects two opposing knitted fabrics 1 and 3 to form a connecting portion 2 to form a double raschel knitted fabric which is a three-dimensional structure. It is a knitting | organization organization chart which decomposes | disassembles and shows the wrapping state of each component yarn of the double raschel knitted fabric which is one aspect | mode of this invention. Each thread is represented by a threaded GB (筬: guide bar) 22 to 26, and the needle number is 0 at the right end. It is a knitting | organization organization chart of the double raschel knitted fabric which is another one aspect | mode of this invention. It is a knitting | organization organization chart of the double raschel knitted fabric which is another one aspect | mode of this invention.

  One embodiment of a double raschel knitted fabric according to the present invention is shown in FIG. In the double raschel knitted fabric 10 of the present invention, the front knitted fabric 1 and the back knitted fabric 3 are arranged at a predetermined interval, and the knitted fabrics 1 and 3 are connected by a connecting portion 2 made of a connecting yarn. Yes. A needle thread (pile 8) of pile yarn protrudes from the surface of the surface knitted fabric 1 and functions as a female engaging element of the B surface fastener. In FIG. 1, only some of the piles 8 formed on the entire surface of the surface knitted fabric 1 are shown as representative examples, and other piles are omitted. In addition, the pile 8 usually stands upright on the front knitted surface.

When the double raschel knitted fabric of the present invention is manufactured by a warp knitting machine, the front knitted fabric is made of two ridges GB22 (pile yarn) and GB23 (fastened yarn), and the back knitted fabric is made of at least one other ridge, for example, GB25 and With GB26 (back yarn), the connecting portion for connecting the front and back ground structures can be knitted with at least one other collar GB24 (connecting yarn) (FIG. 2).
FIGS. 3 to 5 show examples of knitting structure charts showing exploded wrapping states of the constituent yarns of the double raschel knitted fabric of the present invention. The points in the figure indicate the respective knitting needle positions, F indicates the course position of the front (front) knitting needle row, and B indicates the course position of the rear (back) knitting needle row.
The front knitted fabric 1 is composed of a pile yarn 12, a fusion yarn 13 and a connecting yarn 14, the connecting portion 2 is composed of a connecting yarn 14, and the back knitted fabric 3 is back yarns (ground knitting yarns) 15 and 16 and a connecting yarn. 14.

  In the knitting structure unit (repeat) of the pile yarn in the knitting structure of the surface knitted fabric 1 of the present invention, one or more blind wraps exist after one overlap. This includes a case where one or more blind wraps exist at the beginning of a repeat and an overlap exists at the end of a repeat. This overlap may be a closed loop or an open loop. Blind lap is also called idol swing, meaning that the kite moves back and forth between the same hands without swinging left and right.

  In the present invention, the pile yarn threaded through the front outermost heel is, for example, swing-in (moved from the rear to the front of the needle) at the inter-needle number 1, and overlap (parallel to the front side of the needle). Move) and swing out at 0 (move from the front of the needle to the rear) and underlap (parallel movement on the back side of the needle), then the position where the number between the needles is 3 (the swing width of the sinker loop is 3) A blind lap is performed to complete one repeat. Next, the front rod returns to the initial position and repeats the same movement (see GB22 in FIG. 3). The position where the blind wrap is performed can be up to about 30 between needles if the knitting machine is normally used, but usually 1 to 20, for example, 1 to 10, 1 to 7, 1 to 5, 1 to 3, 2 Or 3. It should be noted that even if the pile yarn is threaded through the outermost heel for back, the inter-needle number and the left-right direction arrangement and threading exemplified in this specification are completely reversed. Of course, the knitting can be knitted.

When a needle loop (pile) of a pile yarn that is the ground yarn of the surface knitted fabric 1 is projected on the surface of the double raschel, in the conventional surface knitted fabric, the surface knitted fabric 1 is configured on the same course as the pile yarn loop. There is another ground yarn loop, which is overlapped in the opposite direction to the pile yarn loop, and the pile yarn on the surface knitted fabric is overfeeded and brushed (Patent Documents 2 and 3) to form a pile Is done. For example, FIG. 2, the pile yarn L1 and the ground yarn L2 form a front base fabric. In FIG. 4, the pile yarn L1 and the ground yarn L5 form a front base fabric with a closed loop, and in FIG. 2 of Patent Document 3, the pile yarn 11 and the ground yarn 12 form a front base fabric 60 with an open loop. Yes. Both the pile yarn and the other ground yarn constituting these front knitted fabrics are two pairs of loops that overlap in opposite directions in the same course (that is, pile pile left overlap and tighten yarn right over) 1 pair of wrappings, and vice versa) in the knitting organization unit.
However, in any of the above knitting, a pile height sufficient as a B surface fastener cannot be obtained, and strength against engagement and appearance stability are low.

  Conventionally, when a blind wrap is present in the knitting structure unit of the pile yarn in the above-mentioned patent document and the pile yarn is overfeeded, the overlap portion has a loop in which the yarn consumption is relatively large and the normal yarn tension is maintained. On the other hand, it has been considered that slack occurs in the blind wrap and the front and back underlap portions to form a sinker loop protruding toward the inner connecting portion, or the yarn is entangled and knitting becomes difficult. However, when the inventor overlaps the pile yarn in the overfeed state and then performs blind wrap, normal knitting is performed in the blind wrap and the front and back underlap portions, while the overfeed yarn is overloaded. The present invention has been completed by discovering that a knitted fabric suitable as a B-side fastener can be obtained because the needle loop is formed by protruding from the surface at the lap portion.

The overfeed state for appropriately protruding the needle loop can be arbitrarily set according to the target pile height, but is usually 120 to 280%, preferably 150 to 250% of a general appropriate value. If it is less than 120%, the pile height is low, making it unsuitable as a B surface fastener, and if it exceeds 280%, the yarn becomes loose and knitting becomes difficult. Particularly preferably, it is around 180 to 200%, and when it is within this range, a pile having a suitable height can be projected on the surface stably. Note that a general appropriate value can be appropriately calculated by those skilled in the art from the yarn thickness and the driving amount (wale density, etc.). The suitable height of the pile (needle loop of pile yarn) may be a height that can be used as a B-side fastener or can be raised for the B-side fastener.
By adopting the above-described configuration, a double raschel knitted fabric having a three-layer structure having a pile having a suitable height on the surface can be stably produced without yarns being entangled during the knitting.

The pile loop needle loop protruding from the surface of the double raschel can be further increased in height by surface raising. The raising process is performed by a method known in the art, such as, for example, a cloth raising process or a buff raising process using sandpaper (Emily raising process).
The height of the pile finally formed on the surface of the surface knitted fabric may function as a B surface fastener. If it is too low, the engagement will be inferior, and if it is too high, the peel strength will be high and it will be difficult to attach and detach, and the entangled part will be destroyed by the attachment and detachment, resulting in severe deterioration of the surface appearance.

  The pile yarn constituting the surface knitted fabric of the present invention is preferably a multifilament strong yarn, and the thickness can be appropriately selected according to the purpose.

  The knitting structure of the front knitted fabric of the present invention is any structure as long as it is formed of fastening yarns, pile yarns, and connecting yarns, and can form a double raschel together with the connecting portions of the connecting yarns and the back knitted fabric of the backing yarn. It can be anything. Examples of the type of surface knitted fabric include denby (tricot) knitting, satin knitting, half knitting, and atlas knitting.

In order to knitting a surface knitted fabric using a latch needle, in principle, if a continuous loop is formed in each course by a pile yarn, a fastening yarn and a connecting yarn in a knitting structure unit. Well, the loop can be open or closed. Therefore, any knitting unit of the fastening yarn can be used as long as the surface knitted fabric can be knitted in accordance with this requirement, but preferably, the underlap of the fastening yarn is the same as that of the pile yarn of the same course. Is the opposite direction. Although the present invention is not limited by theory, if the underlap of this portion is in the reverse direction, the underlap portion of the tightening thread cannot suppress the underlap and the blind wrap portion of the pile yarn and cannot loosen. It is considered that the effect of promoting needle loop formation at the overlap is further increased.
By increasing the width of the underlap (sinker loop) of the thread, the basis weight can be increased and the material strength can be adjusted high.

As the fastening yarn constituting the surface knitted fabric 1 of the present invention, a normal yarn is sufficient as long as it has a function of stabilizing the needle loop (pile) lower portion of the pile yarn. However, after knitting using a heat fusion yarn, The base of the pile can be fixed further by heat processing. As a result of this fixation, even if the engagement / detachment operation is performed using the pile on the surface knitted fabric surface as a B surface fastener, the connecting yarn is not pulled, and the appearance of the knitted fabric surface is stabilized.
The heat fusion yarn is a mono or multifilament special yarn in which one or more yarns are coated or bundled with a low melting point resin, and may be used alone or in a bundle. The thickness of the thread can be appropriately selected depending on the application. Specifically, for example, a polyester heat-bonded yarn Belcouple (trademark) of KB Seiren Co., Ltd., in which the low melting point polyester of the sheath is melted into a monofilament by heat processing at about 190 ° C., TORAY with a melting point of 110-120 ° C. Polyamide heat-sealing yarn Elder (trademark), heat-bonding yarn (melting point 180 ° C.) of HYOSUNG CORP.
It is preferable to carry out the fusing process of the heat fusing yarn after the optional raising process. When raising treatment is performed after the melting treatment, a pile having a sufficient size is not formed, and the appearance and texture of the double raschel knitted fabric are also deteriorated. Specifically, when a normal preset, dyeing process, and final heat setting are performed after the pile is formed, the heat-sealed yarn is melted and fixed to the root of the pile yarn.

  In the knitting structure unit of the front knitted fabric, if there is a yarn overlap in the same course as the pile yarn blind wrap, the lower part of the needle loop formed by the pile yarn is easy to stabilize, and the yarn is a heat-sealing yarn. If it is, it will become more stable.

The back knitted fabric 3 has a knitting structure such as a mesh knitting, a denby (tricot) knitting, a satin knitting, a cord knitting, an atlas knitting, etc., having a gap for ensuring air permeability as shown in FIG.
When the back knitted fabric has a mesh structure, since it has elasticity, the generation of wrinkles during raising is reduced. Although the present invention is not limited by theory, this has an effect of absorbing a stress difference when different stresses are applied to the front knitted fabric 1 (pile surface) and the back knitted fabric 3 due to the raising process. This is probably because of this. The mesh structure has the advantages of excellent product strength, breathability, product handling and storage, and is less likely to have curl. The size and shape of the mesh holes can be appropriately selected depending on the application.

  The type and thickness of the ground knitting yarn constituting the knitted fabric 3 of the present invention can be appropriately selected according to the use, but usually 50 to 330 T dtex multifilament yarn or spun yarn, especially false twisted yarn. It is preferred to use. If it is knitted with too thin yarn, it will be difficult to provide the required desired waist strength to the three-dimensional knitted fabric, while if it is too thick, the knitting work will be difficult and the texture of the surface of the knitted fabric will be lowered. . In the case of forming the back knitted fabric 3 having a mesh structure, when a multifilament false twisted yarn is used, stretchability is further imparted, and the generation of wrinkles during raising can be reduced.

The structure of the connecting portion for connecting the facing knitted fabric and the back knitted fabric with a connecting yarn may be a known structure adopted in a double raschel structure.
The thickness of the connecting portion is, for example, 0.5 to 30 mm, and usually 0.8 to 12 mm, as a setting width between the hooks during manufacture. The above setting is appropriately selected according to the yarn to be used, the thickness of the connecting yarn, heat treatment, and raising treatment. If the set width is less than 0.5 mm, it becomes difficult to knitting. On the other hand, if it exceeds 30 mm, it becomes difficult to knitting with a normal warp knitting machine, and the production efficiency and post-workability are lowered. The overall thickness of the knitted fabric can be freely changed by setting the width between the hooks and adjusting the feed amount (feed) of the connecting yarn.

  The connecting yarn constituting the connecting portion of the present invention is not particularly limited in type and thickness as long as the connecting yarn does not buckle with pressure and retains a strength that can ensure air permeability. The use of monofilament yarn increases cushioning, and the use of multifilament softens and is suitable for innerwear materials. For example, a split yarn of about 33 decitex is mentioned.

  The materials of the pile yarn, the fastening yarn, the connecting yarn, and the ground knitting yarn are not particularly limited. For example, polyamide fibers such as nylon 6 and nylon 66, polyester fibers such as polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polyolefin fibers such as polyethylene and polypropylene, synthetic fibers such as acrylic fibers and aramids, modified synthetic fibers thereof, Furthermore, natural fiber, regenerated fiber, semi-synthetic fiber, etc. are mentioned. The above materials may be used alone, or some of them may be used in combination. Polyamide fibers are excellent in strength, and polyester fibers are excellent in strength and recyclability. When the double raschel knitted fabric of the present invention is used for a hook-and-loop fastener, polyester and polyamide having relatively high strength are preferred. Further, the cross-sectional shape of the ground knitting yarn and the connecting yarn is not particularly limited, and may be, for example, a round cross-sectional yarn or a modified cross-sectional yarn.

Further, the knitting density of the surface knitted fabric of the present invention can be appropriately selected according to the use, and is, for example, 30 to 60 course / inch in the warp direction and 16 to 40 wal / inch in the lateral direction. If the density is low, the pile density is low and the engagement as a surface fastener is inferior, and if the density is high, the knitting becomes difficult.
The overall basis weight of the double raschel knitted fabric of the present invention can also be appropriately selected depending on the application. If it is too low, the flexibility and form stability are poor, and if it is too high, the air permeability is poor.

  The double raschel knitted fabric of the present invention can be knitted by a double raschel knitting machine having a front and back double row needle bar. For example, a knitting machine having a needle row density of 22 to 28 gauge, that is, a needle row of 22 to 28 per 2.54 cm (1 inch) can be used.

The double raschel knitted fabric of the present invention can be used as a B surface fastener, and engagement elements of various shapes can be engaged with a pile on the surface of the surface knitted fabric.
For example, when the shear strength (tensile shear strength) is adjusted to be high and the peel strength (peeling strength) is adjusted to be relatively low in the knitted fabric of the present invention, the A surface (male type) having a high engagement strength such as a twist type or a mushroom type ) In combination with a fastener, it is difficult to be strongly displaced by a pulling load, but when pulled in a direction perpendicular to the surface, it can be easily peeled off, and an engaging tool with a small sound at the time of peeling can be obtained.

The double raschel knitted fabric of the present invention is excellent in air permeability, and its air permeability is usually measured in accordance with JIS L1096 A method (fragile type), and normally the air flow rate is 50 to 300 cm ³ / cm ^2. s, preferably 150 to 250 cm ³ / cm ² · s. If the air flow rate is low, it is easily stuffy and not suitable as a sheet material or supporter material. On the other hand, a configuration in which the air flow rate is too high is inferior in strength and form stability.

  The double raschel knitted fabric of the present invention is subjected to water repellency, oil repellency, antifouling processing, water absorption processing, UV shielding processing, and various additions such as antibacterial agents, deodorants, insect repellents, phosphorescent agents, water absorption agents, etc. The agent can be applied.

When the double raschel knitted fabric of the present invention is used as a supporter material, since the material itself can be used as a supporter body, it can be manufactured simply by cutting and treating the cut surface and attaching the A-side fastener, and other processing steps such as sewing and bonding. The manufacturing can be greatly simplified.
The supporter made of the double raschel knitted fabric of the present invention is lightweight and excellent in air permeability, and has an excellent advantage that the appearance does not easily deteriorate without causing a sag even when repeated engagement and disengagement are performed.
When the double raschel knitted fabric of the present invention is used as a seat material for a chair, since the material can be used as a B surface fastener member, it is easy to manufacture and can be easily laminated with other members such as a cushion member, and the shear strength is high. Because it is high and peel strength is low, it is difficult to slip sideways, and it is easy to engage and disengage.

Next, specific examples of the present invention will be described.
<Example 1>
A thick double raschel knitted fabric for a B-side fastener was knitted according to the following specifications with the knitting structure shown in FIG.
Knitting machine: Double raschel knitting machine (22 gauge / 2.54 cm, distance between hooks 5.0 mm)
Fabric weight (measured according to JIS-L1906 (2000)): 463.0 g / m, 298.4 g / m ²
Base fabric structure of the knitted fabric: Denby knitted fabric Surface knitted fabric pile yarn: 110 dtex / polyester multifilament Surface knitted fabric heat fusion yarn: 78 dtex / sheath / core type polyester multifilament (sheath melting point 180 ° C.)
Connected yarn: 33 dtex / polyester split yarn surface knitted fabric: 1 repeat 8 course rhombus mesh (1 in 1 out)
Two back yarns on the back knitted fabric: 167 dtex / polyester multifilament false twisted yarn After knitting, raise using a cut type raising machine (raising using a needle cloth) and set After presetting at a temperature of 190 ° C. for 1 minute, after dyeing and drying, a finishing setting was performed at a set temperature of 150 ° C. for 1 hour. The finished thickness was 4.55 mm.

<Example 2>
A thin double Russell knitted fabric was knitted under the same conditions except that the distance between the hooks in Example 1 was reduced and the finished thickness was changed to 3.0 mm.
<Comparative Example 3>
An ordinary thin double raschel knitted fabric and a surface pile tricot knitted fabric were bonded together by a thermal bonding process to produce a laminated product in which a B-face fastener (tricot knitted fabric) was fused to the surface of the double raschel knitted fabric.
The composition of the thin double raschel knitted fabric used is as follows: Front knitted fabric yarn: 84 dtex / polyester multifilament, Connected yarn: 33 dtex / polyester monofilament, Back knitted fabric yarn: 84 dtex / polyester multifilament, Knitting finish course 50 , Woven well 23.5, no surface raising, thickness 3.0 mm, basis weight 335 g / m ² .
The composition of the tricot knitted fabric used was as follows: front knitted fabric yarn: 117 dtex / nylon multifilament, back knitted fabric yarn: 33 dtex / nylon multifilament, knitted course 57, knitted well 28, surface pile, thickness 1. 6 ± 0.2 mm, basis weight 225 ± 13 g / m ² is treated with acrylic resin, and finish course 53 ± 2 and finish well 44 ± 2.

Evaluation is performed by the following evaluation method, and the results are shown in Table 1.
<Engagement strength>
Prepare a total of 6 test pieces with a width of 5 cm and a length of 10 cm in the longitudinal direction (forward and reverse), three points at the right, center and left of the knitted fabric. Engagement strength according to JIS L3416-2000 It was measured. The test was performed at a pulling speed of 300 mm / min by reciprocating and bonding 800 g rollers with an adhesion length of 5 cm. The combined A-surface fastener is Kuraray Fastening Co., Ltd., trade mark Majirok L 8972S (molded surface fastener made of soft polyester, single unit thickness 1.2 mm).
<Breathability test>
Measured according to JIS L1096 A method (fragile type) (pressure 125 Pa).

The B surface fastener member made of the double raschel knitted fabric of the embodiment of the present invention can be manufactured without requiring an adhesion process or a lamination process. As is clear from Table 1, the double raschel knitted fabrics of Example 1 (thick) and Example 2 (thin) are excellent in lightness and air permeability, and have sufficient engagement strength as a B surface fastener. It was. On the other hand, Comparative Example 3 in which a pile knitted fabric was heat-bonded to a normal double raschel knitted fabric having the same thickness as in Example 2 was equivalent to a conventional product, but was heavy and inferior in air permeability. In addition, although the engagement strength of Comparative Example 3 was not measured, it was resistant to use as a normal supporter.
Although the double raschel knitted fabrics of Examples 1 and 2 were used as back pain bands, they could be used satisfactorily while maintaining air permeability, and no scratches occurred on the front and back knitted fabric surfaces even after repeated engagement and removal 50 times. The appearance before the test was almost maintained.

1: Front knitted fabric 2: Connecting portion 3: Back knitted fabric 4: Front needle hook 5: Rear needle hook 6: Knitting needle 7: Knitting needle 8: Pile 12: Pile yarn 13: Fusion yarn 14: Connecting yarn 15: Back Thread 16: Back thread 22: 筬 GB2
23: 筬 GB3
24: 筬 GB4
25: 筬 GB5
26: 筬 GB6

Claims (8)

  A double raschel knitted fabric composed of a front knitted fabric, a back knitted fabric, and a connecting portion for connecting both facing knitted fabrics with a connecting yarn, and in a knitting structure unit of a pile yarn forming the surface of the front knitted fabric A double raschel knitted fabric in which one or more blind wraps are present following one overlap and a needle loop of a pile yarn protrudes from the surface of the outer knitted fabric.   The double raschel knitted fabric according to claim 1, wherein the knitted fabric is knitted with a pile yarn feeding ratio set to overfeed.   The double raschel knitted fabric according to claim 1 or 2, wherein an underlap between the overlap of the pile yarn and the next blind wrap is in a direction opposite to the underlap of the fastening yarn forming the surface of the surface knitted fabric.   The double raschel knitted fabric according to any one of claims 1 to 3, wherein in the knitted fabric unit of the surface knitted fabric, the overlap of the fastening yarn exists in the same course as the blind wrap of the pile yarn.   The double raschel knitted fabric according to any one of claims 1 to 4, wherein the fastening yarn of the surface knitted fabric is a heat-sealing yarn, and a needle loop lower portion of the pile yarn is fixed in the surface knitted fabric by the heat-sealing yarn by heat treatment.   The B surface fastener member which consists of a double Russell knitted fabric of any one of Claims 1-5.   The supporter with which the trunk | drum or limb which uses the B surface fastener member of Claim 6 is mounted | worn.   The front knitted fabric is knitted with pile yarn rivets and fastening yarn heels and at least one connecting yarn heel, and the back knitted fabric is knitted with at least one other heel and connecting yarn heel, The manufacturing method of the double raschel knitted fabric of any one of Claims 1-5 which knit | join the connection part which connects structure | tissue with the hook for connecting yarns.

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