JPH1077554A - Inlaid knitted fabric having linkage function and andproduction of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an inlaid knitted fabric suitable for a seat covering material, etc., having improved designing properties, recycling properties by forming a loop like felt layer on a surface of the knitted fabric and placing a inlaid system on the other surface allowing to integrate a linkage function with cushion properties. SOLUTION: This knitted fabric has a felt layer 1 containing filaments having single filament size >=2 denier, ring like loops having 1 to 3mm of height, formed on the surface and on the other side an inlaid filament 3 exists. The knitting yarn length of the grand yarn 2 and the knitting yarn length for a terry fabric fixing the inlaid yarn 3 is set to satisfy the equation : formula 0.20<=(LP-LG)/LG <=1.35 (LP is the knitting length of the piling yarn; LP is the knitting length of the grand yarn), preferably, manufacturing a gray fabric for inlaid knitting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inlay knitted fabric suitable for a skin material having an interior element such as a sheet tension in which an engaging function and a cushioning function are integrated, and a single material. The present invention relates to an inlay knitted fabric suitable for recycling.

[0002]

2. Description of the Related Art A covering material such as a sheet upholstery for a vehicle or an aircraft, an office chair upholstery, and a vehicle pillow cover is engaged with a male surface fastener fixed to a base body and mounted. Conventionally, an engaging function is provided by laminating or sewing a nonwoven fabric or a tricot having a loop shape, which functions as a female fastener, on the back surface of the skin material body. It was.

[0003]

A skin material obtained by such a conventional processing method is a seat having a workability and a curved surface when fixed to a seat base material such as a vehicle, an aircraft sheet and an office chair. Although a certain degree of satisfaction can be obtained with both the fit to fit and the feeling of use after fixing, it is necessary to integrate the material having the engaging function with the skin material by laminating, etc.
The cost of the skin material was high.

A conventional skin material having such a laminated structure is:
Since they are composed of different kinds of materials, they need to be separated and separated at the time of recycling, and simple recycling is difficult. Therefore, at present, they are landfilled as shredder dust.

An object of the present invention is to eliminate the above-mentioned drawbacks of the conventional skin material, and it is not necessary to apply complicated processing such as laminating to the cloth used as the skin material. It is an object of the present invention to provide an inlay knitted fabric suitable as a surface fastener-female material having an engaging function surface having an excellent engaging force with a hook-shaped engaging element on a surface having a high designability and an opposite surface to the surface. . Furthermore, the present invention is an excellent material that does not easily displace the skin material on the seat and does not impair the design of the surface of the skin material even when the hook material is repeatedly attached to and detached from the hook-shaped engaging element or used for a long time as the skin material for the seat. To provide a knitted inlay fabric.

[0006]

Means for Solving the Problems The present inventors have found that the following points are important for achieving the above object, and have reached the present invention. A loop-shaped felt layer must be systematically formed on one side.The yarn forming the loop-shaped felt layer must exist with a difference between the ground yarn of the inlay yarn and the knitting yarn length.

That is, according to the present invention, in an inlay knitted fabric, a loop-shaped felt layer composed of multifilaments containing filaments having a single yarn fineness of 2 denier or more is formed on one surface of the knitted fabric, and vice versa. An inlay knitted fabric characterized in that an inlay yarn is present on the surface. The inlay knitted fabric of the present invention is an inlay knitted fabric characterized in that a loop-like felt layer is formed on a surface opposite to a surface expressing a design by inlay yarn, It is preferable that the layer is formed by brushing. Furthermore, the knitted fabric according to the present invention requires that at least one ground yarn has a knitted pile yarn on the inlay knitting structure.

FIG. 1 is a sectional view of an inlay knitted fabric according to the present invention. In FIG. 1, reference numeral 1 denotes a loop-shaped felt layer which is integrated with a knitted fabric and has a role as an engaging function. 3 is a sea
It is an inlay yarn that forms the surface of a knitted fabric when it is used as a toyed fabric. 2 is a ground yarn for fixing 1 and 3. less than,
The present invention will be described in more detail.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As described above, in order to form a loop-like felt layer on the back surface by brushing, it is necessary to obtain a fabric with good reproducibility without any problem in the processing process. Fabric design is essential. However, in the conventional inlay fabric, when the ground yarn is raised, the ground yarn knitting loop length is mechanically knitted because only the yarn length necessary for fixing the inlay yarn can be mechanically knitted. Since it does not have the extra thread length, the yarn is cut before forming the loop shape. Therefore,
In order to form the desired loop-like felt layer by brushing, it is necessary to systematically form a structure having a yarn length sufficient to be scraped out in the production stage of the greige machine.

In the present invention, it is necessary that the inlay yarn and the pile yarn having a single yarn fineness of 2 denier or more are knitted for the same ground yarn as a greige structure before the raising process. If the single fiber fineness of the yarn to be raised is less than 2 denier, the frequency of cutting the yarn by the needle cloth of the raising machine increases, and the loop-like felt layer is destroyed. Therefore, 2 denier or more is preferable.

FIG. 2 shows an outline view of the greige machine before the raising process. In FIG. 2, 4 indicates a pile yarn, 3 indicates an inlay yarn, and 2 indicates a ground yarn. In the greige machine, the inlay yarn and the pile yarn are mixed on the same surface, but the pile yarn is scraped to the opposite surface by the raising process to form a loop-like felt layer, and only the inlay yarn remains on the surface of the knitted fabric to express the design.

The most important component for producing the inlay knitted fabric of the present invention is the knitting yarn length of the pile yarn. The following equation (1) is based on the knitting yarn length of the ground yarn that is structurally restrained.
It shows how much freedom the pile yarn has. _{0.20 ≦ (L P -L G)} / L G ≦ 1.35 (1) ( wherein, L _P denotes a knitting yarn length of pile yarn, L _G denotes a knitting yarn length of ground yarn.) for example, it indicates that equal to (L _P -L _G) / value of L _G is knitted yarn length knitting yarn length of pile yarn is ground yarn in the case of zero. That is, the pile yarn is substantially equivalent to being knitted in alignment with the ground yarn. It is important to note that the pile yarn does not always cover the needle loop on the back side, so that in this case, the raising is very difficult and the ground yarn may be cut. Therefore, in order to completely cover the needle loop with the pile yarn, an operation for forming a pile is necessary for knitting machine operation.

In the equation (1), (L _P -L _G ) / L _G
Is smaller than 0.20, the pile yarn is not sufficiently separated from the ground yarn, and it is difficult to raise the pile yarn. on the other hand,
If the value of the above expression exceeds 1.35, the pile shape remains on the surface even after the formation of the loop-like felt layer by raising the brush. The constituent yarns are cut. That is, there is an appropriate brushing condition for forming a loop-like felt layer sufficient for engagement with the hook-like engagement element, and the expression (1) is important. Also, needless to say, the needle shape of the brushing machine,
Density and contact pressure are important adjustment factors in production.

FIG. 3 shows a knitting structure diagram for implementing the present invention. The numbers with F in the figure indicate the order of the knitting organization. F
At 1, the inlay yarn 3 is supplied, and the design is expressed by a patterning device. In F2, the ground yarn 2 and the pile yarn 4 are supplied, and the basic structure is completed with two yarns. The organization chart called an inlay knitted fabric in a knitting textbook or the like is described in a diagram in which pile yarn is not supplied in F2, and is a general interpretation. There is another method for forming a pile on the inlay knitted fabric as described later.

[0015] Adjustment between L _P is sinker - is possible by changing the height. However, it is necessary to use a knitting machine for sinker pile in order to carry out the present invention, since a knitting machine dedicated to an ordinary inlay cannot form a pile. Preferably has a structure that allows needle selection. It is preferable to appropriately modify the sinker cam while checking the load on the needle during knitting.

FIG. 4 shows a knitting structure diagram different from that of FIG. The difference from FIG. 3 is that the basic structure is completed with three yarns. That is, the inlay yarn 3 is supplied at F1 and
In No. 2, pile yarn is not supplied and only ground yarn 2 is supplied to fix the inlay yarn. In F3, the ground yarn 2 and the pile yarn 4 are fed to obtain an inlay knitted fabric having the pile yarn. Next, the product of the present invention can be obtained by raising the back surface. The back surface functions as a hook-and-loop fastener female material, and can be engaged with the hook-shaped engaging element, and the design of the front surface is not affected by repeated attachment and detachment.

The method of knitting an inlay knitted fabric for obtaining a structure necessary for carrying out the present invention has been described above. More specifically, the design of the pile formation also affects the napping. That is, taking the structure of FIG. 3 as an example, the shape of the needle loop constituting the back surface of the fabric is strictly different. That is, the size of the needle loop where the inlay yarn is tacked and fixed is different from the size of the needle loop where the inlay yarn is welted. As a result, the larger the loop, the easier the nap is raised. The pile yarns are classified according to the number with P in FIG. 3 and will be described. FIG.
To P8. P1, P4, P5 and P8 represent pile loops formed by the needles that hold the inlay in place in the inlay tissue. The remaining P2, P3, P6 and P7 indicate pile loops formed by the needles at the portions where the inlay yarns have risen. In the raising process, loops of P1, P4, P5 and P8 are easily chipped, and pile loops of P2, P3, P6 and P7 tend to remain on the inlay surface. Therefore, it is preferable to set the sinker such that only the pile loops of P1, P4, P5 and P8 are formed by the patterning mechanism of the sinker as a measure for making the raising property uniform and the inlay surface uniform.

Further, as a structure of a yarn that can be used as a pile yarn, it is necessary that the crimp rate (K1) be 5% or more, in addition to having a single yarn fineness of 2 denier or more. If less than 5% of the yarn is used as a pile yarn, the crimped yarn will be stretched when the yarn is raised, so that the scraped yarn will be a volumeless and felt layer having no volume. This state is not preferable because, in the engagement with the hook-shaped engagement element, the thickness of the felt layer, which is a female material in this case, becomes thin, so that the engagement becomes insufficient and a satisfactory feeling of use cannot be obtained. . Therefore, the crimp rate (K1) needs to be 5% or more.

As a method of producing a knitted fabric which does not necessarily require a raising process in order to make a loop-shaped felt layer exist on the back surface of the inlay yarn, a processed yarn having a ring-shaped loop on the side surface of the yarn is used. It is also effective. That is, FIG.
As shown in the figure, a ring-shaped loop having a height of 1 mm to 3 mm
The yarn is a yarn having a form in which the thread protrudes from the side surface of the yarn, and is an air-entangled yarn generally called a Taslan yarn.
If it is less than 1 mm, sufficient engagement strength with the hook-shaped engagement element cannot be obtained. However, if the number of ring-shaped loops having a height exceeding 3 mm exceeds 300/10 cm with respect to the yarn, the processability during knitting becomes poor. Therefore, 1mm ~
The number of ring loops of 3 mm is preferably 100 pieces / 10 cm or less.

The yarn is used for either the pile portion or the ground yarn portion shown in FIG. When used in a pile portion, a loop-shaped felt layer can be formed by raising the back surface in the manner described above. When used for ground yarn, the pile yarn is expressed as (L _P
-L _G) / L _G is set to be zero.

The above-mentioned air-entangled yarn is produced by introducing a multifilament for side yarn and another multifilament into a nozzle for entangling, and blowing air into the nozzle to mix and entangle these multifilaments. be able to. Increasing the feed rate of the side filament multifilament increases both the size and amount of the ring loop. These ring-shaped loops are bound at the loop ends due to air entangling and are suitable for engagement with hook-shaped engaging elements.

It is important that the condition of the air entanglement satisfies the following expression. If the feed rate of the side yarn is less than 30%, the size and amount of the ring loop are insufficient, and the number of loops is reduced, so that sufficient engagement strength cannot be obtained. On the other hand, if the air pressure at the time of air entangling is less than 3.0 kg / cm ² , the entangling becomes insufficient and the loop end becomes free, or the ring does not form a loop. OF ≧ 30 AP ≧ 3.0 [However, OF indicates the feed rate (%) of the side yarn, and AP indicates the air pressure (Kg / cm ² ) at the time of air entanglement. ]

[0023] The female surface fastener made of the inlay knitted fabric of the present invention produced by such a method can be engaged with hook-shaped engaging elements of various shapes. Include, for example, a barbed shape, a two-stage barbed shape, with ribs, a barbed shape, a hook shape, a multi-stage hook shape, and the like, from the viewpoint of engagement, a barbed shape, a two-stage barbed shape, a ribbed barbed shape, and the like Shaped engagement elements are preferred. As an engagement element having such a shape, for example, KM fastener rail (trade name, manufactured by Kuraray Co., Ltd.) can be mentioned.

[0024]

The present invention will be specifically described below with reference to examples. The physical properties in the examples were determined by the following methods. (1) Measurement of knitting yarn length The ground yarn and the pile yarn are pulled out from the knitting end direction of the greige machine without applying excessive tension. Before pulling out the thread,
The needle loop is marked at intervals of 100 wales. Next, a load of 10 g is applied to the drawn yarn, and the length of the interval for 100 wells previously marked is measured. This was repeated 6 times, each knitting yarn length of the ground yarn and pile yarn with the average value and L _P, L _G. (2) Engaging strength JIS L-3416 The hook surface of the hook-and-loop fastener has an engaging element shape of a two-step bent shape, an engaging element density of 44 / cm ² , an element height of about 1.5 mm, Element thickness about 0.6mm, maximum fray width 1
mm KM fastener rail X6320-3 (Kuraray)
It was used. (3) Number of Ring Loops Using a DT-201 fluff measuring device manufactured by Toray Engineering Co., Ltd., the number of fibers protruding from the center of the yarn by a certain amount or more was measured, and the number of ring loops was calculated. The number of fibers protruding 1 mm or more from the center of the yarn is set to H0.
The number of fibers protruding by not less than mm was defined as H1, and the number H of ring-shaped loops having a height of 1 to 3 mm was determined by the following equation. H = (H0−H1) / 2

The knitting conditions in the examples and comparative examples were as follows. Knitting conditions; PL-3 24 inch 16 gauge 32 feeder number of sinker pile circular knitting machine (manufactured by Fukuhara Seiki Seisakusho Co., Ltd.) was modified so that needle selection by the jack method could be performed. The tissue was set as shown in FIG.
The organization chart shows only one repeating unit. Actually, it is repeated four times in one rotation of the knitting machine. FIG. 6 (Organization A)
7 (designation B) is different from FIG. 7 (designation B) in that the pile yarn forming pattern is a total pile in FIG. 7 and two mating in FIG. That is, the brushing property and the state of formation of the looped felt layer are evaluated. An air-entangled yarn of polyester 1300/384 was used for the odd yarn feeder No. Polyester SD200 / 72 false twisted yarn was used as ground yarn to be fed to the even yarn feeder No. The brushing process is considered to be completed when the pile yarn existing on the inlay side has completely settled.

Example 1 A 350/24 false twist polyester yarn having a crimp rate of 15% was used as the pile yarn of the even yarn feeder No., and a pattern foil was prepared so that the structure A could be knitted. Is 3.6
mm and knitted. Thereby, (L _P -L
_A knitted fabric having _G ) / L _G of 0.7 was obtained.

Example 2 In Example 1, knitting was performed with only the sinker length changed to 2.0 mm. As a result, the _{(L P -L G) / L} G 0.
4 was obtained.

Example 3 In Example 1, the structure was changed to the structure B, and a knitting machine having a sinker length of 1.5 mm was mounted and knitted. This gave the knitted fabric to be 0.6 _{(L P -L G) / L} G.

Example 4 In Example 2, knitting was carried out by changing the structure so as to have the structure B and mounting the one having a sinker length of 2.8 mm. This gave the knitted fabric to be _{(L P -L G) / L} G is 1.1.

Example 5 A drawn yarn of polyester filament 100/20 was used as a side yarn and led to a confounding nozzle at a feed rate of 55%. A drawn yarn of polyester filament 100-36 was used as a core yarn and a feed rate of 10%. To the confounding nozzle with air pressure of 4.0
Processing at Kg / cm ² yielded Taslan yarn. On the surface of the obtained Taslan yarn, ring loops of 1 to 3 mm were present at 60 pieces / 10 cm. The yarn was inserted from a pile feeder of an even-number yarn feeder, and knitting was performed by setting a sinker under a condition that a pile was not formed.

Comparative Example 1 In Example 3, only the sinker length was changed to 3.6 mm. Thus, the _{(L P -L G) / L} G 1.
5 was obtained.

Comparative Example 2 In Example 5, the yarn to be inserted into the pile feeder was knitted by changing to a polyester 350/24 false twist yarn having a crimp rate of 15%. This gave the knitted fabric to be 0.07 _{(L P -L G) / L} G.

Table 1 shows the results of the evaluation of the raising property and the engaging strength of the examples and comparative examples of the present invention. As is clear from Table 1, in the case of the raising process, the formation pattern of the pile yarn and the ratio of the pile yarn knitting growth to the ground yarn knitting growth (Equation 1) affect the raising property and the engagement strength. The inlay knitted fabric according to the present invention has excellent engagement strength without impairing the appearance of the inlay surface due to the raising.

[0034]

[Table 1]

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an inlay knitted fabric of the present invention.

FIG. 2 is a schematic view of an inlay knitting greige machine for carrying out the present invention.

FIG. 3 is a knitting diagram for knitting the present invention.

FIG. 4 is a knitting diagram for knitting the present invention.

FIG. 5 is a side view of a yarn having a ring-shaped loop used in the present invention.

FIG. 6 is a knitting method for knitting the present invention.

FIG. 7 is a knitting method for knitting the present invention.

[Explanation of symbols]

 1 loop-shaped felt layer 2 ground yarn 3 inlay yarn 4 pile yarn

Claims (7)

[Claims] In an inlay knitted fabric, a loop-like felt layer composed of multifilaments containing filaments having a single yarn fineness of 2 denier or more is formed on one surface of the knitted fabric, and the inlay yarn is formed on the opposite surface thereof. An inlay knitted fabric having an engagement function, characterized in that the inlay is present. 2. The inlay knitted fabric according to claim 1, wherein the pile processing yarn having a crimp rate of 5% or more is fed and knitted simultaneously with the ground yarn for fixing the inlay yarn. 3. The inlay according to claim 2, wherein the knitting yarn length of the ground yarn for fixing the inlay yarn and the knitting yarn length of the processed yarn for pile satisfy the following expression (1). A method of manufacturing a knitted fabric. _{0.20 ≦ (L P -L G)} / L G ≦ 1.35 (1) ( wherein, L _P denotes a knitting yarn length of pile yarn, L _G denotes a knitting yarn length of ground yarn.) 4. The inlay according to claim 1, wherein the greige machine according to claim 2 is brushed, and the piled yarn is scraped out on the back surface of the knitted fabric to form a loop-shaped felt layer. Manufacturing method of knitted fabric. 5. The inlay knitted fabric according to claim 1, wherein the multifilament constituting the loop-shaped felt layer is a yarn having a ring-shaped loop having a height of 1 mm to 3 mm. 6. A seat covering material comprising the inlay knitted fabric according to claim 1. 7. A seat comprising the skin material according to claim 6.