JPH05295629A - Plurally layered flat yarn - Google Patents

Abstract

PURPOSE:To provide the plurally layered flat yarn not abrading the contact members of a winding machine and a loom, not leaving ashes even on combustion treatments, and capable of being readily woven into woven fabrics or processed into other various products. CONSTITUTION:The plurally layered flat yarn 1 comprising an oriented film 2 and thermoplastic synthetic resin layers 3, 3 disposed on both the sides of the oriented tape 2 and having a melting point lover than that of the oriented tape is characterized in that the thermoplastic resin layers contain an organic filler 4 and that the organic filler forms projections and depressions on the surfaces of the flat yarn.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a multilayer flat yarn,
In particular, the present invention relates to a multi-layer flat yarn that can be widely used for manufacturing woven fabrics.

[0002]

2. Description of the Related Art In the production of woven fabrics, it has already been known to use a multi-layer flat yarn in which a thermoplastic synthetic resin layer having a lower melting point than the supporting tape is provided on both sides of a thermoplastic synthetic resin supporting tape. , For example, Jitsuko Sho 53-499
No. 02 gazette discloses that such a flat yarn is used to weave a woven fabric and heat the outer thermoplastic resin at a temperature equal to or higher than the melting point to thermocompression-bond the intersecting portions of the flat yarn. There is. However, the surface of the multi-layer flat yarn having the thermoplastic synthetic resin layer is smooth and relatively soft, and therefore has extremely high friction resistance. Due to this frictional resistance, when winding the manufactured multilayer flat yarn,
The resistance due to the contact between the drawn flat yarn and the guide member of the passage and the resistance due to the mutual contact between the multi-layered flat yarns increase, and the winding tension of the winder becomes higher than the adjusting function of the winder or becomes uneven. The smooth movement of the stretched flat yarn is impeded, and the form of the package in which the multilayer flat yarn is wound becomes a drum shape as shown in FIG. 2 or a twill drop as shown in FIG. Therefore, when the drawn flat yarn is taken out from the above-mentioned package to weave a woven fabric or other various products are manufactured, the drawn flat yarn is caught and the releasing property is deteriorated, and the thermoplastic resin having a low melting point is used in the loom. Due to the high frictional resistance of the surface of the synthetic resin layer, the weavability of the drawn flat yarn is deteriorated, and there is a problem that a uniform woven fabric cannot be woven. In order to solve this problem, Japanese Patent Laid-Open No. 63-264930 discloses a compound in which an inorganic filler is added to a thermoplastic resin layer having a low melting point on both sides of a drawn flat yarn to reduce the friction resistance of the surface. A layer flat yarn is disclosed. However, since the multi-layer flat yarn contains an inorganic filler having a high hardness, the members of the winding machine or the loom that come into contact with the multi-layer flat yarn are easily worn, and the woven fabric woven by the multi-layer flat yarn is also used. There remains a problem that a considerable amount of ash remains when the cloth is incinerated.

[0003]

SUMMARY OF THE INVENTION Therefore, the present invention solves the above-mentioned problems, does not cause wear of members of a winding machine or a loom, does not leave ash even when incinerated, and weaves a woven fabric. Another object of the present invention is to provide a multilayer flat yarn which is easy to manufacture various other products.

[0004]

The present invention effectively solves the above problems by adding an organic filler composed of organic fine particles to a low melting point thermoplastic synthetic resin layer constituting the outside of a multilayer flat yarn. It was made based on the knowledge that it could be solved. That is, the present invention is a multilayer flat yarn in which a thermoplastic synthetic resin layer having a lower melting point than the supporting tape is provided on both sides of the supporting tape, the thermoplastic synthetic resin layer containing an organic filler, Provided is a multi-layer flat yarn which is characterized in that unevenness is formed on the surface by an organic filler. In the present invention, the support tape forming the core material of the multilayer flat yarn and the low melting point thermoplastic synthetic resin layer formed on the outside of the support tape are both formed of a thermoplastic synthetic resin. Examples of the thermoplastic synthetic resin include high-density polyethylene, low-density polyethylene, medium-density polyethylene, polypropylene, EVA, polyvinyl chloride, polystyrene, polyvinyl alcohol, polyacrylonitrile, polyvinylidene chloride, polyamide, and the like. Polyester and the like, and preferred are polyolefins such as polyethylene and polypropylene. Here, the resin forming the low-melting point thermoplastic synthetic resin layer has a melting point of 15 to 35 than the thermoplastic synthetic resin forming the supporting tape.
C., preferably 20 to 30.degree. C. lower. The thermoplastic synthetic resin forming the support tape of the present invention is preferably one that is oriented by stretching, while the resin forming the thermoplastic synthetic resin layer is preferably one that is not oriented by stretching.

In the present invention, particularly preferable materials for the supporting tape are high density polyethylene and polypropylene, and preferable materials for the thermoplastic synthetic resin layer are low density polyethylene and low melting point polypropylene. The polyethylene used in the support tape of the present invention has a melting point of 124-138.
The melting point of polyethylene used for the low melting point thermoplastic synthetic resin layer is 104.
To 126 ° C, preferably 107 to 109 ° C. The polypropylene used for the support tape of the present invention has a melting point of 155 to 168 ° C, preferably 160 to 165 ° C, and the polypropylene used for the low-melting thermoplastic synthetic resin layer has a melting point of 128 to 142 ° C. It is preferably at 132 to 137 ° C. It is important to determine the organic filler to be added to the low melting point thermoplastic synthetic resin layer in the present invention in consideration of suitability with the thermoplastic resin forming the layer on the surface of the supporting tape. The heat distortion temperature must be higher than 50 ℃, and the organic particles must be incompatible. Specific examples thereof include thermoplastic resins such as polyethylene, polypropylene, polyamide and polystyrene / fluorinated polyester, and acrylic-urethane resins, amino resins, silicone resins, allyl resins, unsaturated polyesters, phenolic resins, etc. The thermosetting resin of which the fine particles of the thermosetting resin which has undergone the curing reaction are preferable. When the resin forming the thermoplastic synthetic resin layer is low density polyethylene, an organic filler such as amino resin or silicone resin is preferable, and when it is polypropylene, amino resin, phenol resin, polyester or the like is preferable. The particle size of this organic filler is from 1 to
It is 8μ, preferably 2-5μ. Further, the content of the organic filler in the thermoplastic synthetic resin layer is 200 to 20000 PPM, preferably 400 to 12,000 PPM, but especially when the thermoplastic synthetic resin forming this layer is low density polyethylene ~ 6000 PPM, 800 ~ 600 for polypropylene
0 PPM is preferred. To obtain an organic filler content of 200 PPM, 20 g of organic filler is added to 100 kg of the thermoplastic resin forming the layer, and 2000 g is added to obtain 20000 PPM. Note that the content of the organic filler is set to 200 PPM or more because if it is lower than this, the effect is not obtained.
The reason for setting it to 0 PPM or less is that the effect is not changed even if it is more than this, while the price is increased.

In the present invention, an inorganic filler and a slip agent can be used in combination with the organic filler. In this case, the content of the inorganic filler is 0.1 to 0.1% with respect to the thermoplastic synthetic resin layer.
4.0 wt%, slip agent to the thermoplastic synthetic resin layer,
Add 0.05 to 0.3% by weight. Examples of the inorganic filler include silicon oxide, calcium carbonate, talc and kaolin, and examples of the slip agent of the present invention include silicone oil and fatty acid amide slips. Agents, hydrocarbon slip agents, ester slip agents, alcohol slip agents, metal soaps, and the like. The organic filler, the inorganic filler and the slip can be added not only to the thermoplastic synthetic resin layer but also to the thermoplastic synthetic resin forming the support tape, if necessary. The production of the multi-layer flat yarn of the present invention is carried out by applying an adhesive on both sides of a support tape and then adhering a low melting point thermoplastic synthetic resin film, or by using two extruders to form a composite die. A thermoplastic synthetic resin having a low melting point is fused on both sides of a thermoplastic synthetic resin sheet serving as a supporting tape, extruded from a composite die to form a laminated film, and then stretched and slitted. Of these, the latter method is preferred. In the present invention, the thickness of the support tape is 12 to 45 μm, preferably 16 to 35 μm, and the thickness of the thermoplastic synthetic resin layer is 1 to 5 μm, preferably 2 to 4 μm.
And

[0007]

The multi-layer flat yarn of the present invention uses an organic filler having a hardness lower than that of the inorganic filler.
Compared with multi-layered flat yarns containing inorganic fillers, the wear of the contact members of the devices used for yarn making and weaving is significantly reduced. Further, since the multi-layer flat yarn of the present invention uses a flammable organic filler, when the woven fabric using the multi-layer flat yarn of the present invention is incinerated, the residue is extremely small and the incineration treatment is performed. In this case, it is easier to process than a woven fabric of a multilayer flat yarn using an inorganic filler which leaves a large amount of residue. Furthermore, after the multi-layer flat yarn of the present invention is woven as a warp and a weft in a net or the like with a loom and then the tolerance points of the warp and the weft are heat-sealed, a strong woven fabric can be easily manufactured.

[0008]

EXAMPLES The present invention will now be described with reference to examples, but the present invention is not limited thereto. [Example 1] A multilayer flat yarn of the present invention shown in Fig. 1 was produced. High-density polyethylene (density 0.96)
0, melting point 133 ° C.) supporting tape (stretching ratio 7 times)
The thermoplastic synthetic resin layer contains low-density polyethylene (density 0.
920, melting point 108 ° C.), and an amino resin fine particle having an average particle diameter of 3 μm (benzoguanamine / melamine resin, eposter (M-30) 4, Nippon Shokubai Co., Ltd.) as an organic filler, in the ratio shown in Table 1. Used in. The multilayer flat yarn was manufactured by the following method. The 200φ circular die was connected to an extruder for core material that extrudes high-density polyethylene and an extruder for coating that extrudes low-density polyethylene to be a thermoplastic synthetic resin layer. The low density polyethylene mixed with the filler in the proportions shown in Table 1 and the high density polyethylene were placed in a predetermined container of an extruder. After being introduced into the die, the low-density polyethylene was divided into both sides of the flow path of the high-density polyethylene and flowed out from the outlet of the die to form a three-layer structure laminate. After the laminated body is cooled, it is slit in a continuous process, stretched 7 times, and further annealed so that the thickness of the core support tape is 16 μm.
The thickness of the thermoplastic synthetic resin layer on both sides of the support tape is set to 2μ, and it is further cut to obtain a multilayer flat yarn of 300 denier.
100 pieces were produced, and each piece was wound with a winder. The properties of the thus obtained multi-layer flat yarn and the multi-layer flat yarn (Comparative Example 1) produced by the same method as in Example 1 except that no filler is added to the thermoplastic synthetic resin layer are shown in Table 1. It was For this winding, a winding machine (type: TS 36 Z Take-up winder) manufactured by Torii Iron Works Co., Ltd. was used, and the speed was 122 m / min and the apparent winding tension was 12
The cheese was wrapped under the condition of g.

[0009]

[Table 1] Comparative Examples Examples Examples Examples 1-1 1-2 1-2 1-3 Filler-free benzoguanamine / melamine evaluation items Addition amount (PPM) 0 400 1,000 4,000 Number of defective winding products 481 6 5 6 (Hourglass, twill drop) Number of non-defective products 19 494 495 494 Defective product ratio 96.2 1.2 1.0 2.0 As is apparent from Table 1, benzoguanamine / melamine as an organic filler, 1 to the weight of the thermoplastic resin layer
The best results were obtained when 000 PPM was added (Example 1-2).

Example 2 A multilayer flat yarn (360 denier) having a support tape thickness of 16 μm and a thermoplastic synthetic resin layer thickness of 4 μ was produced by the same material and method as in Example 1. The properties of the obtained multilayer flat yarn are shown in Table 2.

[Table 2] Comparative Example Example Example 2 2-1 2-2 2-3 Filler-free benzoguanamine / melamine evaluation item Addition amount (PPM) 0 400 1,000 4,000 Number of defective winding 473 60 11 4 (Hourglass, twill drop) Number of non-defective products 27 440 489 476 Percentage of defective products% 94.6 12.0 2.2 2.2 0.8 As is apparent from Table 2, benzoguanamine / melamine is a thermoplastic resin as a filler. The best results were obtained when 4000 PPM was added to the layer weight (Example 2-
3).

[Example 3] As a core material, a polypropylene (density 0.90, melting point 163 ° C) supporting tape (stretching ratio) was used.
6.85 times) and low melting point polypropylene (density 0.8) containing the same organic filler as shown in Table 3 on both sides.
9, a melting point of 135 ° C.)
It was produced in the same manner as in Example 1. The thickness of the support tape is 21
μm, and the thickness of the thermoplastic synthetic resin layer was 3 μm. The properties of the obtained multilayer flat yarn are shown in Table 3.

[Table 3] Comparative Example Example 3-1 3-2 Filler-free benzoguanamine / melamine evaluation item Addition amount PPM 0 600 5,000 Number of defective winding 480 177 13 (Hourglass, twill drop) Good winding product Number 20 20 323 487 Percentage of defective products% 96.0 35.4 2.6 As is apparent from Table 3, benzoguanamine / melamine is used as a filler at 5000 PPM with respect to the weight of the thermoplastic resin layer.
The best results were obtained when added (Example 3-
2).

Reference Example 1 Using the flat yarns obtained in Examples 1 to 3, a woven fabric was formed by a loom, and the tolerance points of the warp and the weft were heat fused. The woven fabric was formed under the following conditions. (1) Loom Nissan Motor Co., Ltd. Water Jet Loom FW451 (2) Loom speed 400rpm (3) Woven fabric 130cm (4) Cross fusion temperature 107 ℃ (5) Heat seal condition Heat seal temperature 120 ℃ Pressure 2kg / Cm ² Heating time 4 seconds Seal width 15 mm Weaving machine operating rate and adhesive strength of cross stitch in forming woven cloth were evaluated as follows. Loom operating rate 〇 ・ ・ ・ 90% or more △ ・ ・ ・ Less than 90% and 70% or more × ・ ・ ・ Less than 70% (Practically impossible for mass production) Adhesion degree of cloth Judgment degree of adhesion of cloth However, the one that did not get misaligned even if it was strong was regarded as "excellent". The suitability of each flat yarn for the loom is summarized in Table 4.

[0013]

[Table 4] Multi-layer flat yarn Comparative Example Example Example Example Example 1 1-1 2-1 2-3 -3-2 Evaluation item Loom operating rate × 〇 △ 〇 〇 Number of weave scratches / 1000m 42.9 2.8 4.5 1.5 2.1 Cross eye adhesion Degree Excellent excellent Excellent excellent Excellent heat sealing strength g / 15mm 520 510 680 650 930 As can be seen from Table 4, no filler is added. Rather, it was demonstrated that when a flat yarn with a filler added was used on a loom, it showed better results in terms of both the loom operating rate and weave scratches, and the degree of cloth adhesion and heat sealing In terms of strength as well, good results of approximately the same level or better were obtained. [Reference Example 2] A multilayer flat yarn was produced in the same manner as in Example 1 except that silicon oxide which was an inorganic filler was used instead of the organic filler. The resulting multi-layered flat yarn is composed of low density polyethylene (density 0.920, melting point 108 ° C) on both sides of a 16 μm thick supporting tape composed of high density polyethylene (density 0.960, melting point 133 ° C). A thermoplastic synthetic resin layer having a thickness of 2 μm was laminated, and the thermoplastic synthetic resin layer contained 0.4% by weight of silicon oxide having an average particle diameter of 2 μm. This multilayer flat yarn and Example 1-2
Using the multi-layer flat yarn of the present invention produced in 1., weaving was performed continuously and the performances were compared. As a result, when a multilayer flat yarn containing silicon oxide was used, the reed wing of the loom reed was worn out in about 9 months, and it was necessary to replace it. On the other hand, when the multi-layer flat yarn of the present invention was used, no abnormality was observed in the loom reed after 11 months.

[0014]

[Brief description of drawings]

FIG. 1 is an enlarged perspective view showing a multilayer flat yarn of the present invention.

FIG. 2 is a side view showing a form of winding a multilayer flat yarn in the shape of an hourglass-shaped cheese roll.

[Fig. 3] Fig. 3 is an end view showing a winding state of a multilayer flat yarn in which a cheese winding twilling phenomenon has occurred.

FIG. 4 is a side view of a multi-layer flat yarn winding configuration showing the normal state of cheese winding.

[Explanation of symbols]

 1. ． ． Multi-layer flat yarn 2. ． ． Support tape 3. ． ． Low melting point thermoplastic synthetic resin layer 4. ． ． Organic filler

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location D03D 15/00 B 7199-3B

Claims (2)

[Claims] 1. A multi-layer flat yarn in which a thermoplastic synthetic resin layer having a melting point lower than that of the supporting tape is provided on both sides of the supporting tape, wherein the thermoplastic synthetic resin layer contains an organic filler, A multi-layer flat yarn characterized by having irregularities formed on its surface. 2. The multilayer flat yarn according to claim 1, wherein the content of the organic filler in the thermoplastic synthetic resin layer is 200 PPM to 20000 PPM.