JPS61185213A - Tile carpet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to carpet tiles. More specifically, the upper surface includes a structure known as a carpet, i.e., a non-woven carpet, commonly referred to as a carpet, such as a plain weave or a needle centimeter, which is moderately used as a base material for the upper surface. This invention relates to a tile carpet with a fc structure made by bonding felt-like non-woven fabrics with a certain thickness.

Conventional technology Carpets are positioned as soft flooring materials, and include carpets of a certain size, such as tiers, ornamental carpets, and mats, as well as carpets that are used for laying in rooms, hallways, etc. .

Its distinctive feature is that it is formed from a three-dimensional fiber aggregate structure with cushioning properties.

In other words, a quill is formed using a method such as tufting, weaving, knitting, or gluing using spun yarn or crimped multifilament yarn as a nozzle yarn, and has a base fabric portion that holds the base of the quill. A pile carpet consisting of a pile carpet, a cut pile, or a mixed pile group of the two;
It also includes non-pile carpets such as plain woven and non-woven fabrics, e-dolphin carpets made of non-woven fabrics with a part of them protruding in the shape of an tile, and is a three-dimensional aggregate of fibers or threads. This floor covering has the cushioning properties and design characteristics unique to three-dimensional fiber aggregates.

On the other hand, linoleum has long been used as an overlay material for hard floors, as well as organic composite tiles such as vinyl asbestos floor tiles, homogeneous vinyl floor tiles, wood tiles, and cushion floors. There are organic composite tile flooring materials such as PVC long sheets, which are called ``Haha'', among which tiles are square, rectangular, or arbitrary shapes with about 303 to about 50 pieces on each side. It is called.

Since tile flooring is a unit of this shape, the dimensional unit of tile flooring is generally extremely small compared to the size of living spaces such as rooms and hallways, so it can be laid freely with any number of tiles, so PVC long sheets It has become very popular because it is easier to pack and transport compared to other products, and is used in offices, stores, residences, etc.

In recent years, tile carpets that incorporate the convenience of tile flooring have been developed and are becoming popular. In other words, with the advent of tile carpets, which have the characteristics of fiber aggregates such as sturdiness, cushioning, walking feel, and design that are unique to carpets, as well as the characteristics of being easy to transport and lay due to their small dimensions. be. The structure of a tile carpet consists of a carpet surface structure, which is the upper surface material, and a lower member with a certain thickness and weight, which maintains the surface structure and maintains the tile form. It is known that it is used for asphalt compounds, vinyl chloride compounds, attactile polypropylene compounds, and rubber compounds.

Problems to be Solved by the Invention These tile carpets are widely used in offices, stores, residences, etc., but the bottom member is solid and hard, and they do not necessarily have good cushioning performance. The feeling of stepping is not necessarily satisfactory.

In order to improve this property, methods have been developed to make foams of vinyl chloride, urethane, polyethylene, rubber, etc., but although such foams have elastic properties,
Momentary recovery from pressure such as walking is too quick,
Even /? The feeling of stepping on a carpet with a lining made of urethane-based or rubber-based foam may result in the feeling of stepping on the carpet, which impairs the cushioning characteristics of the fiber aggregate of the carpet, which is the upper surface material. It is obvious if you think about it.

The feeling of stepping on a carpet is due to the superimposed absorbing force derived from the deformation stress caused by the step 16, which is a characteristic of a three-dimensional fiber aggregate.
The problem lies in the delayed recovery when the weight is released and recovered.

In the case of a tile carpet, the upper member is the carpet itself, but since it does not have the function of a tile, the overall thickness is limited, and about half of the total thickness is occupied by the lower member. Therefore, one feature is that the upper carpet part cannot be made very thick, and the cushioning properties that are the lifeblood of the carpet are largely dependent on the lower member.

Asphalt concrete ground, vinyl chloride compound, etc., which have been traditionally used as lower members, are hard, and in tile carpets where the upper carpet part has to be made thinner, the result is a tile carpet with poor cushioning properties. In order to improve this, if we use a foam such as urethane or rubber, we will not be able to obtain the elasticity of the elasticity and the cushioning properties and feeling of walking that are unique to the three-dimensional fiber aggregates that are the characteristics of P1 carpet. There wasn't.

51 In order to overcome the structural defects associated with these tile carpets, the present inventors investigated various types of lower members and found that a felt-like non-woven fabric having a certain thickness, particularly a needle-A felt-like non-woven fabric, was developed. The present inventors have discovered that by using this method, it is possible to obtain a tile carpet with a good walking feel, and have completed the present invention.

Means for Solving the Problems The present invention provides a tile carpet consisting of a surface layer, an intermediate layer, and a lower layer, in which the surface layer is a normal carpet, the thickness of which is 1111 or more through the adhesive part of the intermediate layer, and the density is 1 cubic F) 0. .0
A tile carpet characterized in that it has a lower layer of felt-like nonwoven fabric weighing between 7 and 0.25 grams.

The present invention relates to the structure of a tile carpet, in which the overall thickness is limited because it does not have the function of a tile, and approximately half of the total thickness must be occupied by the lower member. It relates to a tile carpet that has a structure that uses felt-like nonwoven fabric with a certain degree of thickness.

Having such a structure allows it to have the surface appearance of a carpet itself, and has the functions of a tile, such as packaging, interlocking, laying, and dimensional safety, and also has the characteristics of a carpet. However, this carpet tile has the cushioning properties and feel of stepping on it that are unique to three-dimensional fiber aggregates.

Hereinafter, the tile carpet of the present invention will be explained in more detail.

The flat side of the tile carpet of the present invention is required to be in the shape of a tile, and usually has an angle of 30 to 50 mm, but it may be slightly larger or smaller, or may have a rectangular or other shape. It's fine, but it's fine as long as you can use common sense to treat them as tiles.

The overall thickness of the upper and lower members is approximately 20 mm or less, preferably 15 mm, in order to function as a floor covering material.
01 or less is desirable.

The thickness of the lower member cannot be strictly defined because there is an adhesive layer with an unclear boundary between the upper carpet part and the lower material, but if it is too thin, the function as a tile carpet will be impaired and the cushioning properties will be poor. Therefore, the thickness of the felt-like nonwoven fabric of the lower member needs to be at least one inch thick.

The felt-like nonwoven fabric of the lower member needs to have cushioning properties, and if too thin fibers are used, the cushioning properties will be poor, so the fibers used should be 3 denier or more, preferably 5 denier or more. However, if different deniers are mixed for reasons such as forming a nonwoven fabric, the average denier is preferably 3 or more. Further, when the felt-like nonwoven fabric is composed of short fibers, the fiber length is arbitrary.

The type 8i fibers may be natural, recycled, or synthetic fibers, or may be a blend of these fibers. Further, inorganic fibers such as asbestos and glass may be used, and a blend of these may also be used.

The density of the felt-like nonwoven fabric is fiber component per cubic piece, 0.
0.7 to 0.25 grams is desirable. Its boundaries are difficult to determine. Similarly, mechanically, the upper limit of density is about 0.14 grams per cubic meter using the needle punch method as an example.
As a method for increasing this density, for example, JP-A-50-53
As disclosed in Publication No. 71, @
You can improve your degree.

The fibers may be joined by any method such as adhesion, fusion, welding, mechanical entanglement, etc., but a felt-like nonwoven fabric using mechanical entanglement by needle punching is particularly preferred. In addition, all or part of the thickness of the felt-like nonwoven fabric may be impregnated and solidified with a resin or the like to increase dimensional stability, shape retention, and shape stability as appropriate without impairing cushioning properties.

The upper carpet part is a carpet consisting of a surface layer part and a base fabric part, and can be a nine-nosail carpet or a non-pile carpet using tufting, weaving, knitting, adhesion, etc.

However, from the aesthetic point of view of the carpet, Noguirupet is effective.

The upper carpet part and the lower nonwoven fabric part are joined by adhesive, melting layer,
An appropriate method such as welding can be applied.

Example The upper member carpet was created by the tufting method. Nylon 66BCF discolored interming yarn 2400D was used as the pile yarn, 1/10 inch gauge, number of stitches 13 piles/inch, arm heel length 3.51.
E11. The pile yarn weight a was 409 g/m, and the base fabric was a polyester nonwoven fabric for carpets with a weight of 120 g/m''.

The gray fabric of this carpet is dyed using a Wins dyeing machine,
It was used as a material for dyeing carpets.

The thickness of the dyed fabric of this carpet was 4.6 tm.

Felt-like nonwoven fabrics with test numbers 1 to 26 as shown in Table 1 were bonded to this carpet dyed fabric with rubber latex, and a tile carpet with a side of 50 squares was made using a push-cut cutter.

Next, Table 1 will be explained. Table 1 shows the specifications of the felt-like nonwoven fabric that was to be used as the base material of the prototype. The test number column is the test number of each base material nonwoven fabric. The material column indicates the fiber type of the Tomoshita nonwoven fabric used. Non-woven fabric formation The upper column shows the manufacturing method of non-woven fabric, test numbers 1-19, 22-26
is by needle punching method. Use a No. 32 regular needle as the needle, and punch 250 to 500 punches per square inch, alternating the front and back sides several times, for a total of 10 punches.
00 to 3000. For example, if test number 5,
I got this at 2350. The base fabric used was a borizolo virenteso cloth weighing 80 g/m2. In this way, the number of notches was adjusted so that each had a density as shown in Table 1. Test number 20 using the Sonnsend method is a felt-like nonwoven fabric formed directly by spinning, and test number 21 using the press fusion method is a felt-like nonwoven fabric that is self-fused by hot pressing. The denier column shows the denier value of the fiber used.

The density column is the number of fibers per cubic piece before resin melting. However, the base fabric Jti inserted as a core into the felt-like nonwoven fabric is not included.

The thickness is measured using peacock, and the unit is millimeters. The resin impregnation column indicates whether or not the lower 1/2 to 1/3 of the felt-like woven fabric was impregnated with the SBR latex compound.

The weight column is the weight in grams per square meter. In this case as well, the weight of the base fabric in the felt-like nonwoven fabric was excluded.

Table 2 shows the specifications and physical properties of the tile carpet prototype produced by pressing in this manner.

AFi in the test number column Using the same system as above, pile length 5
．． 8111+, is a carpet made of jute secondary fabric with a pile yarn weight of 860.97 m''. If it is used as a regular carpet instead of tiles, the twill height will be increased so that the thickness is approximately the same. This is a carpet prototype, and is representative of a carpet that has a good walking feel.

B is a tile carpet using the above-mentioned carpet dyeing machine with a known gum asphalt base material, and C is a carpet with a vinyl chloride compound base material.

Test numbers 1 to 26 correspond to the numbers of the bottom felt-like nonwoven fabrics in Table 1, and indicate the numbers of the obtained tile carpets.

The value for compression work is the amount of work &-cm* determined from the compression-recovery curve of each carpet. The bottom area of the compressor is 25.8 cubic centimeters, and the maximum load is 50
0 grams/square centimeter and a suppression rate of 1 centimeter/minute.

A, B, C, 1 to 6 people who feel comfortable stepping on Maru's flannel.
We asked people to step on carpets up to 26 and found the difference between them and the test number. Those with a four-way or similar tread feel to A are marked with ○, those with a slightly bottoming feeling compared to A are marked with Δ, and those with a considerable amount of bottoming feeling are marked. is marked with an X.

From these results, test numbers 2 to 6.8.9 and ll to 19.22 compared to conventionally known tile carpets B and C.
-24, the tile carpet was comfortable to step on.

When looking at this in relation to the amount of compression φ, the boundary is not clear, but 1700 p-on or more is good.

Table 2 = 15- Effects of the Invention The tile carpet of the present invention is characterized by the use of a felt-like nonwoven fabric as the base material, and provides excellent stepping comfort and heat retention.

Since the tile carpet underlayment of the present invention is a relatively thick felt-like nonwoven fabric, it can be easily fixed with a hard, flexible cloth called Magic Teso, making the construction work extremely simple. Since it is light, it is easy to transport and exhibits optimal performance as a household carpet tile.

Claims (1)

[Claims] In a tile carpet consisting of a surface layer, a middle layer, and a bottom layer, the surface layer is usually carpet, the thickness of the middle layer is 1 mm or more through the adhesive part, and the density is 0.07 to 0.25 per cubic cm.
Tile carpet characterized in that it has a lower layer of felt-like non-woven fabric of Gram