JP2001219513A - Heat-resistant laminated cloth and skin material for hot carpet using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat-resistant laminated cloth excellent in waterproof properties and suppressed in slip properties and a skin material for a hot carpet using the same. SOLUTION: This heat-resistant laminated cloth is formed by providing a laminate layer comprising a composition consisting of polypropylene and a polyolefin thermoplastic elastomer on both surfaces of a knitted fabric using stretched yarn, which comprises polypropylene of which the heat resistance is enhanced by compounding a hindered amine compound and an oxidation inhibitor, as warp and weft yarns.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a heat-resistant laminate cloth. More specifically, the present invention relates to a heat-resistant laminate cloth suitably used for a skin material for a hot carpet.

[0002]

2. Description of the Related Art Hot carpets are laid on floors or tatami mats and used for heating. The structure of the hot carpet is mainly composed of a heating element in which a heating element is embedded in a nonwoven fabric or the like, and a heat insulating layer made of urethane foam or felt made of fibers is provided below the heat generating section, and a rubber latex is provided on the lower surface of the heat insulating layer. An anti-slip layer made of various kinds of woven fabric or needle-punched carpet is provided on the upper part of the heat-generating portion, and a decorative skin material having anti-slip properties is stacked on the upper surface thereof. Is common.

Conventionally, a nonwoven fabric made of synthetic resin has been used as the above-mentioned skin material. However, in order to increase the waterproofness of the nonwoven fabric, or to exude the adhesive when bonding the nonwoven fabric to the underlying fabric. In order to prevent this, there is a problem that the thickness of the nonwoven fabric must be increased and the cost becomes high.

In order to solve the above-mentioned problems, it has been attempted in recent years to use a laminate cloth in which a laminate layer made of polypropylene is provided on both sides of a woven or knitted fabric in which a drawn yarn made of polypropylene is a weft yarn. However, the surface of the laminate layer made of polypropylene is unfavorably too slippery, and the temperature during use of the hot carpet reaches 120 ° C., and the laminate cloth made of polypropylene causes thermal decomposition in about 1600 hours, There was a problem that heat resistance was insufficient.

On the other hand, there is an olefin thermoplastic elastomer as a polypropylene resin having low lubricity and heat resistance, but when this is used for a laminating layer, laminating processability is inferior, ear height and width are insufficient, and weaving is difficult. There is a problem that poor adhesion to the knitted fabric is caused.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to provide a heat-resistant laminate cloth which is inexpensive, has excellent waterproof properties, and has reduced lubricity. An object of the present invention is to provide a skin material for a hot carpet used.

[0007]

In order to achieve the above object, the heat-resistant laminate cloth of the present invention comprises a hindered amine compound in an amount of 0.3 to 0.7% by weight and an antioxidant in an amount of 0.3 to 0.7%.
It has a configuration in which a laminated layer made of a composition of the following components a) and b) is provided on both sides of a woven or knitted fabric using a drawn yarn made of polypropylene containing 0.7% by weight. a) Polypropylene 30 to 70% by weight b) Polyolefin thermoplastic elastomer 70 to 30% by weight

[0008] The heat-resistant laminate cloth is suitably used as a skin material for hot carpet.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
The polypropylene (hereinafter sometimes abbreviated as PP) used in the present invention is preferably a high-crystallinity polypropylene having a high drawing effect as a drawn yarn, and the polypropylene used for the laminate layer is preferably a polypropylene having a high heat resistance. . Specific examples include propylene homopolymer, propylene-ethylene block copolymer, propylene-ethylene random copolymer, and the like.Both are excellent in moldability for drawn yarn and laminating layer, high in strength, and A propylene homopolymer having heat resistance is preferred.

The form of the drawn yarn made of PP is as follows.
Any of multifilaments, monofilaments, flat yarns, split yarns and the like can be used, but flat yarns are preferred in view of formability and smoothness. The fineness of the drawn yarn is 300 to 2000 dtex (hereinafter abbreviated as dt)
Is preferable, and 500 to 1200 dt is more preferable.

Next, a woven or knitted fabric is formed by weaving and knitting using the drawn yarn as a warp yarn. The weaving and knitting structure is not particularly limited, and examples of the woven fabric include various woven fabrics such as plain weave, woven weave, leno weave, and the like. Is a tricot,
The Miranese edition, the Russell edition, and the like.

Polyolefin thermoplastic elastomer used in the present invention (hereinafter sometimes abbreviated as TPO)
Is a resin composition comprising a crystalline polyolefin component such as polypropylene and polyethylene and a rubber component such as an ethylene-propylene copolymer, and a blend type of both components or a cross-linked TPO thereof has been conventionally known, recent years,
There is known a reactor-type TPO which can be obtained by copolymerizing both components with ethylene, propylene and, if necessary, diene by multistage polymerization. Among these, a reactor type TPO excellent in heat resistance is preferable, and a melting point is preferably 150 ° C. or more. As a commercial product of the reactor type TPO, "Cataroy" manufactured by Montell S.D. Sunrise Co., Ltd. and the like can be mentioned.

In the present invention, a heat-resistant laminate cloth is formed by providing a laminate layer on both sides of the woven or knitted fabric made of the PP using the composition made of the PP and the TPO. The composition ratio of PP and TPO as the composition used for the laminate layer is as follows: PP is 30 to 70% by weight;
Is 70 to 30% by weight. When PP is less than 30% by weight, laminating processability is inferior, neck-in is large, ear height and width are insufficient, and adhesion to woven or knitted fabric is inferior. On the other hand, if the content of PP exceeds 70% by weight, the lubricity of the surface is undesirably increased.

As the hindered amine compound (hereinafter abbreviated as HA compound) used in the present invention, specifically, bis (2,2,6,6-tetramethyl-4-piperidyl)
Sebacate, tetrakis (2,2,6,6-tetramethyl-
4-piperidyl) -1,2,3,4-butanetetracarboxylate, bis (1,2,2,6,6-pentamethyl-4-piperidyl) di (tridecyl) -1,2,3,4- Butanetetracarboxylate, 1- (2-hydroxyethyl) -2,
Polycondensate of 2,6,6-tetramethyl-4-piperidinol and diethyl succinate, 1,6-bis (2,2,6,6-tetramethyl-4-piperidylamino) hexane and 2,4-dichloro And polycondensates of -6-tert-octylamino-s-triazine.

The compounding ratio of the HA compound is from 0.3 to 0.7% by weight, preferably from 0.4 to 0.7% by weight, based on the PP of the drawn yarn.
0.6% by weight. When the compounding ratio of the HA compound is less than 0.3% by weight, the heat resistance of the drawn yarn becomes insufficient, and when the compounding ratio is 0.7% by weight, no further heat resistance can be obtained, which is uneconomical.

The antioxidants used in the present invention include:
Known phenolic antioxidants, phosphorus-based antioxidants, and sulfur-based antioxidants can be used. These may be used singly, but it is preferable to use a phenolic antioxidant and a sulfuric antioxidant in combination, since the heat resistance is further improved due to a synergistic effect.

The compounding ratio of the antioxidant is from 0.3 to 0.7% by weight, preferably from 0.4 to 0.7% by weight of the PP of the drawn yarn.
0.6% by weight. When the compounding ratio of the antioxidant is less than 0.3% by weight, the heat resistance of the drawn yarn becomes insufficient, and when the compounding ratio is 0.7% by weight, further heat resistance cannot be obtained, which is uneconomical.

It is preferable to use an HA compound and an antioxidant in combination because the heat resistance is improved by a synergistic effect. As a method of blending an HA compound and an antioxidant with PP, PP
May be directly supplied to an extruder together with the above, but a method of preparing a master batch containing a high concentration of an HA compound and an antioxidant in advance and appropriately supplying the master batch to the extruder is preferable from the viewpoint of dispersibility.

The synthetic resin used in the present invention includes an ultraviolet absorbent, a lubricant, an antistatic agent, a pigment, a flame retardant, an inorganic filler, a nucleating agent, a foaming agent and a dispersant within a range not departing from the gist of the present invention. And other commonly used additives.

[0020]

EXAMPLES Polypropylene (MFR = 2.0 g / 10 m)
in) to Siasorb UV3 as an HA compound
Using a composition containing 0.56% by weight of 346 (manufactured by Scitech) and 0.4% by weight of Irganox 1010 (manufactured by Ciba-Geigy) as an antioxidant, a film was formed by an inflation method and cooled. After stretching, stretching temperature 130 ° C, annealing temperature 135 ° C
In hot plate contact type drawing method, 6.8 times drawing and fineness 550dt,
Two types of flat yarn of 1060 dt were obtained. The flat yarn was formed into a plain woven fabric using a Sulzer-type loom at a warp of 550 dt18 / 2.54 cm × weft 1060 dt11 / 2.54 cm.

Next, as a laminate layer, 50% by weight of polypropylene (MFR = 16.0 g / 10 min) was used.
And Cataloy KS-025P (manufactured by MSS) as a polyolefin thermoplastic elastomer (melting point = 160 ° C.)
A mixture with 50% by weight was melted by an extruder to obtain a laminate cloth having a thickness of 20 μm on the front surface of the woven fabric and a thickness of 50 μm on the back surface, provided with a laminate layer by extrusion lamination.

When a heat resistance test was performed on the laminate cloth, the residual elongation ratio after 4500H at 120 ° C. was 50% or more, which was good. In addition, the surface has good lubricity and was suitably used as a skin material for hot carpets.

[0023]

As described above, the heat-resistant laminate cloth of the present invention is a woven or knitted fabric obtained by blending a hindered amine compound and an antioxidant to improve the heat resistance and using a drawn yarn made of polypropylene as the warp yarn. It is formed by providing a laminate layer composed of a composition of polypropylene and a polyolefin thermoplastic elastomer on both sides of the cloth, and has heat resistance, which is the property of polypropylene and the moldability and the property of polyolefin thermoplastic elastomer. Has excellent anti-slip surface characteristics.
This heat-resistant laminate cloth has excellent durability in a 120 ° C. environment and is suitably used for a hot carpet skin material.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a heat-resistant laminate cloth according to the present invention.

FIG. 2 is a schematic cross-sectional view of a hot carpet using the heat-resistant laminate cloth of FIG. 1 as a skin material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat resistant laminate cloth 2 Woven cloth 3 Laminating layer 4 Hot carpet 5 Heat generation part 6 Heat insulation layer 7 Slip prevention layer 8 Surface cloth 9 Skin material

Claims (2)

[Claims] 1. A hindered amine compound of 0.3 to 0.7.
Laminated layer composed of the following components a) and b) on both sides of a woven or knitted fabric using a drawn yarn made of polypropylene containing 0.3 to 0.7% by weight of an antioxidant as a weft yarn. Heat resistant laminate cloth provided with. a) Polypropylene 30 to 70% by weight b) Polyolefin thermoplastic elastomer 70 to 30% by weight 2. A skin material for hot carpet using the heat-resistant laminate cloth according to claim 1.