JPS5838516A - 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] The present invention relates to carpets having antibacterial properties.

More specifically, it relates to carpets such as tufted carpets, knee punch carpets, Wilton carpets, etc., which are composed of a single pile part, a base fabric part, and an adhesive part, and which have sustained antibacterial properties. .

In recent years, with the spread of carpets, the proportion of carpets installed in homes, public buildings, etc. is increasing.

In general, one carpet is a product that is frequently laid on the floor where it is susceptible to falling fumes and dirt, it is used by being walked over many times, and it is not a product that needs to be cleaned often, so it is not suitable for sanitary reasons. This was an area of great interest in terms of Especially in environments where the widespread use of air conditioning maintains a comfortable temperature for fine gK throughout the year, it is recommended to install carpets as a base.
Hygiene problems in carpets have become increasingly important in recent years, as the chances of infection and proliferation of fungi and the like have increased significantly.

In other words, to prevent diseases transmitted through carpets, to prevent re-infection of diseases, to prevent the occurrence of bad odors, etc.
It has been recognized that antibacterial treatment is necessary.

Under these circumstances, antibacterial carpets have been proposed, and it is known to impregnate or coat the fibers of carpets with antibacterial agents to produce antibacterial products.

By the way, conventional antibacterial carpets are made by impregnating or coating the pile yarn itself with an antibacterial agent, and although it has a certain antibacterial effect, it is not necessarily a satisfactory effect, and this antibacterial property does not last long. It was less effective when used over a long period of time.

Furthermore, since the area to which the antibacterial agent is applied is the pile part, it comes into direct contact with the human body, so there is a risk of rusting causing damage to the human body such as skin damage.

The present inventors are calling present &1! In order to provide a carpet that has long-lasting antibacterial properties, we have conducted extensive research into the mechanism by which antibacterial effects are produced.
More importantly, we discovered that the gradual oozing of the antibacterial agent from the carpet has a significant effect on the antibacterial effect, and after further research, we finally arrived at the present invention.

That is, the gist of the present invention is a carpet having a pile fixing adhesive layer, in which the adhesive contains a self-retaining agent.

The carpet according to the present invention utilizes the structure of the carpet, which is a composite material unlike ordinary fabrics, and contains an antibacterial agent in the backing adhesive, so that the carpet has a sustained antibacterial property.

The antibacterial agent in the present invention refers to the growth and expansion of bacteria and fungi.
For example, when a textile product treated with an antibacterial agent is infected with staphylococcus, the coccus will no longer proliferate and will die after a certain period of time.

A feature of the carpet of the present invention is that by incorporating an antibacterial agent into the adhesive layer, the antibacterial agent gradually oozes out, and as a result, it has an antibacterial effect even at initial and long-term use pressures. Furthermore, while conventional carpets are antibacterial carpets in which the pile yarn itself is impregnated or coated with an antibacterial agent, the carpet of the present invention has no antibacterial agent exposed on the surface, making it extremely safe for the human body. In addition, impregnating or applying an antibacterial agent to the pile threads that make up the appearance of the carpet may discolor the surface of the carpet or impair the feel of the carpet. Since it is not directly attached to the pile yarn, these concerns are completely eliminated.

As described above, the carpet of the present invention is a carpet that solves the conventional problems by containing an antibacterial agent in the adhesive, has a sustained (long-term) antibacterial property, and is safe for human health. This is a book that has remarkable effects on safety, appearance, texture, etc.

The carpet of the present invention is particularly useful for carpets used by a large number of people, ie, carpets used in hotels, lodgings, nursing homes, hospitals, etc.

Hereinafter, the configuration, embodiments, and effects of the present invention will be explained in detail.

In the present invention, carpet pile fibers include synthetic fibers such as acrylic fibers, nylon fibers, polyester fibers, and polypropylene fibers, recycled fibers such as rayon and cupro, and natural fibers such as cotton and wool. In addition, the material for the base fabric may be pile fiber, natural fiber, or recycled fiber ("J f'L", but it is preferable to have a structure with voids on the entire surface, woven fabric with a texture, or non-woven fabric). and falls under 9.

Tuft Carpeller 1 m Fabrics using tape yarns made by shredding commonly used polypropylene films, mixed fabrics of spun yarns and tape yarns, spun yarn fabrics such as synthetic fiber cloths, blended fabrics, cotton cloths, jute cloths, etc. is preferable as the base fabric of the carpet of the present invention.

The adhesive used in the present invention may be rubber-based or vinyl-based adhesives used in carpets, but styrene-butadiene latex, which is often used in tact carpets, exhibits good effects.

These latexes are used as compounds, but
A latex that does not contain any filler components such as calcium carbonate or clay is undesirable because it prevents the leaching of antibacterial agents after assimilation. According to experiments conducted by the inventors, an adhesive containing at least 2 to 10% by weight of a filler component based on the adhesive base material component is preferred.

The amount of adhesive applied is generally within the range commonly used.
The amount used should be such that a sufficient adhesion effect is achieved in view of the practical functionality of the carpet.

As the antibacterial agent in the present invention, pendelconicum chloride, chlorhexicine, etc. are used, but any antibacterial agent used as an antibacterial agent for textiles such as clothing can be used.

The amount of antibacterial agent added in the carpet of the present invention is preferably at least twice the appropriate amount of adhesion when used on conventional pile fibers, although the limit is not clear.

For example, when using t hachlorhexidine (purity 20%), when the proper adhesion violet used on the conventional pile fiber itself is 0.5 inch (apparent) of the pile fiber ERW, in the carpet according to the present invention, the boundary between Not sure, but pile fiber m
It is preferable to add 1.0% by weight or more based on the weight. That is, in the case of a carpet with a re-pile fiber weight of 1 kg per 1 square meter and an adhesive solid component of 1 kg, it is preferable to add 1.0% by weight or more of the antibacterial agent to the adhesive solid component. When the fiber weight is 0.5 kg and the adhesive solid component is 1 kg, 1 kg of the antibacterial agent is added to the adhesive solid component.
jr: It is preferable to add 0.5 weight it coefficient or more.

In this way, the guideline for addition should be determined by the pile fiber weight, but it should be changed appropriately depending on the shape, density, and pile height of the pile fibers.According to experiments conducted by the present inventors, the pile height When the amount of antibacterial agent increases, more favorable results are obtained by increasing the amount of antibacterial agent added.

In the present invention, it is preferable to add vinegar to the adhesive to disperse the antibacterial agent as uniformly as possible. For example, in the case of a styrene-butadiene latex compound, the main components are raw latex, filler, and dilution water. It is preferable to add a pre-calculated amount of antibacterial agent to this dilution water, mix and disperse completely, and then stir and mix and disperse the raw latex while diluting it.

Adhesives containing antibacterial agents are applied to carpet greige and hardened using a commonly used method. For example, in the case of a styrene-butadiene latex compound, it is applied by a conventional glue roller method and dried at a conventional temperature of about 120 to 160°C.

The present invention will be explained below by way of examples. In the examples, "1 part" or "chi" also indicates parts by weight or weight it%.

Example 1 Using a base fabric with volupp birenteso yarn as the primary base fabric, a cut pile of 1 kg per 1 square meter was made using a pile yarn of 100 tres of acrylic fiber and a loop pile of 1 kg per square meter was made using a pile yarn of 100 tres of nylon fiber using the tact method. While I was busy making carpet greige fabrics and performing back adhesive processing to fix the piles of these carpet greige fabrics, I mixed the adhesive components of the 2-tex compound shown below.

Caldoxylated 8BR (purity 50%) 20
0 parts nonionic activator 0.4
5 parts antifoaming agent
0.09 parts calcium birophosphate
1 Calcium carbonate
250 parts Tank sticky agent 2 parts The solid content of this adhesive component is approximately 350 parts. To dilute this, add a pendelkonium chloride antibacterial agent to 180 parts of water and stir well to disperse it uniformly. After this, the adhesive components were diluted and thoroughly stirred and mixed to obtain an adhesive.

The amounts of the pendelkonium chloride type anti-agent added were 01.1%, 2%, 4%, and 8%, respectively, based on the solid content of the adhesive.

This adhesive was applied to the back side of the car-covered gray fabric so that the solid content was 1 kg (11 square torr), and a chute cloth was applied, and the adhesive was heated at 140'C for 6 minutes to evaporate the moisture. It was made into a carpet.

As a comparison, the same antibacterial agent as in Example 1 was sprayed onto the pile of a carpet in which no antibacterial agent was added to the adhesive, and two layers were applied to the pile (comparative example). Antibacterial efficacy tests were conducted on carpets.

This test method uses 2111 microorganisms of P. spp.
A millimeter circular sample carpet was sealed at 67°C.
Cultured for 24 hours.

The inhibitory effect of the antibacterial agent on the growth of the bacteria was measured by measuring the width of the halo that appeared around the sample, and expressed as the average value (unit: millimeters).

In order to examine the durability of its efficacy over time, following Example 1, this carpet was laid in the corridor on the first floor of an office building, and after being put into practical use for 6 months, a similar antibacterial efficacy test was conducted. Ta.

During the six months of the same year, 159,272 people passed through the station during its operation.

The above results are shown in Table 1.

The results shown in Table 1 confirm the antibacterial properties of the carpet prepared by adding an anti-inflammatory agent to the carpet adhesive, and the durability and long-term sustainability of the antibacterial activity. On the other hand, carpets in which antibacterial agents were applied to the pile by spraying showed initial resistance, but little or no resistance after 6 months of use. still,
In the early stage, it was found that the amount of the former added was approximately twice as much as the amount of the latter attached, and had the same antibacterial effect.

The carpet of the present invention obtained in Example 1 showed no problems at all in human skin damage tests, and was found to comply with the Act on Regulation of Household Products Containing Harmful Substances (Ministry of Health and Welfare Ordinance No. 40 promulgated in 1970, 1981). Hazardous substances specified in Ministry of Health and Welfare Ordinance No. 64) [■ Hexachloreboxyoctahydroendoequinzomethanonaphthaline ■ Tris(2,6-dibromopropyl) phosphate ■ Tris(1-azirizonyl)
No phosphine acids were detected, confirming that the product is extremely safe for the human body.Also, there is no change in the texture or color of the carpet surface compared to carpets that do not use antibacterial agents, and there is no difference in light resistance. No discoloration or fading was observed in the test.

On the other hand, the comparative example had some problems in the human skin damage test, with changes in the texture and slight discoloration of the carpet surface before and after spraying the antibacterial agent, and considerable discoloration and fading in the light fastness test. .

Example 2 The same carpet greige and adhesive components as used in Example 1 were used, and chlorhexicine (purity 20%) was used as an antibacterial agent.
%) was added and mixed using dilution water in the same manner as in Example 1,
Thereafter, a carpet was prepared in the same manner as in Example 1.

The amount added is 0% and 0%, respectively, based on the solid content of the adhesive.
．． 2ch, 0.4%, 0.8%, and 1.6%.

An antibacterial activity test was conducted on each of these carpets in the same manner as in Example 1.

As shown in Table 2, the results confirmed the antibacterial properties of the carpet containing an antibacterial agent added to the adhesive. In addition, like Example 1, this carpet was highly safe for the human body, and there was no change in texture or discoloration of the carpet.

(Hereafter, remainder f3) Table 1

Claims (1)

[Claims] A carpet having a pile fixing adhesive layer, the carpet containing an antibacterial agent in the adhesive.