JP2008229235A - Aromatic and deodorant carpet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carpet capable of diffusing aroma from an aromatic carried by the carpet according to natural air flow in the room, while absorbing and removing an offensive odor other than the aroma of the aromatic by the deodorant carried by the carpet. <P>SOLUTION: In the carpet, while an aromatic sealing an aroma component in a micro-capsule is carried in a fixing layer of the carpet, deodorant having deodorizing performance against an odor component other than the aroma diffused by the aromatic is imparted to pile and/or the fixing layer, so that the offensive odor is removed and a healing space can be created in the room by a faint aroma from the aromatic. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention creates a healing space by the fragrance diffused from the carpet, and further removes unpleasant odors other than the fragrance by a deodorant carried on the carpet, thereby reducing the odor concentration of the fragrance. However, the present invention relates to a fragrance / deodorant carpet that can create a slight scented space over a long period of time.

  In recent years, heat insulation and airtightness have been remarkably improved compared to conventional houses, and high-performance energy-saving houses have been developed. However, the higher the airtightness of the house, the more unpleasant odors are likely to be trapped in the room, which makes it uncomfortable. Therefore, technology that removes unpleasant odors in the room has come to be required, and technology that removes odors by spraying fragrances and removing odors by carrying deodorants on carpets and wallpaper. Various proposals have been made.

  The main unpleasant odors in the room are food odors, pet odors, tobacco odors, and various odors. Examples of malodorous components that cause unpleasant odors in these rooms include various gases such as ammonia, hydrogen sulfide, methyl mercaptan, acetic acid, formaldehyde, etc., but the present invention eliminates these malodorous components, It provides a carpet that creates a slightly fragrant space.

In Patent Document 1, there is provided an electric carpet configured to maintain the effect of a fragrance material or a deodorizing material by mixing at least one of the fragrance material or the deodorizing material with an open-cell soft foam. Proposed. However, in this technique, when the fragrance material and the deodorant material are carried simultaneously, the effects are mutually canceled, so that the expected effect cannot be obtained.
JP 2003-314840 A

  The present invention has been made in view of such a technical background, and the fragrance drifts from the fragrance carried on the carpet by the flow of natural air in the room, while the consumption carried on the carpet. It is an object of the present invention to provide a carpet capable of efficiently adsorbing and removing unpleasant odors other than the fragrance of the fragrance by the odorant.

  As a result of intensive investigations to solve such problems, the present inventors have carried out a fragrance other than the scent that carries a fragrance on the carpet's sealing layer and releases it from the pile yarn and / or the sealing layer. It has been found that by adding a deodorant having a deodorizing function to the odor component of the odor, it is possible to efficiently create a healing space in the air even when the concentration of the fragrance is lowered. did. In order to achieve the above object, the present invention provides the following means.

  [1] In a carpet including a skin layer composed of a pile yarn and a base fabric, and a sealing layer for fixing the pile yarn and the base fabric, a fragrance is supported on the sealing layer, and the pile yarn And / or a carpet having a deodorant carried on the sealing layer.

  [2] The carpet according to item 1 above, wherein the fragrance component of the fragrance is supported on the surface of the melamine microcapsule and encapsulated in the melamine microcapsule.

  [3] The carpet according to the above item 1 or 2, wherein the deodorant contains a hydrazine derivative and an inorganic substance.

[4] The carpet according to any one of the preceding items 1 to 3, wherein the fragrance is supported on ² to 25 g / m ² and the deodorant is supported on ² to 50 g / m ² .

  According to the invention of [1], in a carpet including a skin layer made of pile yarn and a base fabric, and a sealing layer for fixing the pile yarn and the base fabric, an aromatic agent is added to the sealing layer. Since the pile yarn and / or the sealing layer carry a deodorant, when the indoor air passes through the interior of the carpet by natural convection, the fragrance is released from the fragrance and the deodorant The odor is removed by the agent. Since the fragrance is supported on the sealing layer, it does not easily fall off the carpet during use of the carpet, and exhibits a durable scent effect. Since the deodorizer is carried on the pile yarn and / or the sealing layer, an excellent deodorizing effect can be exhibited.

  According to the invention of [2], since the fragrance component of the fragrance is supported on the surface of the melamine microcapsule, even if it is mixed in the sealing layer of the carpet, the fragrance can be diffused from the beginning. In addition, the fragrance component of the fragrance is also enclosed in the melamine microcapsule, so the fragrance is released after the capsule is destroyed by pressure, until all capsules are destroyed for a long time. Can last.

  According to the invention of [3], since the deodorizer contains a hydrazine derivative and an inorganic substance, the deodorizer exhibits sufficient deodorization performance for gases such as formaldehyde, ammonia, hydrogen sulfide, methyl mercaptan, and acetic acid. Can do. In addition, since fragrance components such as rose, jasmine, lemon, orange, and cypress that are diffused from the fragrance are difficult to remove by the deodorizer, only these fragrance components are diffused indoors. be able to.

According to the invention [4], mosquitoes with sufficient fragrance effect and deodorizing effect the fragrance 2~25g / ^{m 2,} the so deodorant is 2 to 50 g / ^{m 2} supported - pets can do.

Next, an embodiment of a carpet according to the present invention will be described with reference to the drawings. The carpet 1 of this embodiment includes a skin layer 4 in which a pile yarn 2 and a base fabric 3 are sealed by a sealing layer 5, and a backing layer 6 is simultaneously bonded to the lower side of the sealing layer 5. Yes. Fragrance 7 and deodorant 8 are mixed in the sealing layer 5 and the backing layer 6 is adhered. (See FIG. 1) The carpet 1 preferably has air permeability, and preferably has an air permeability of 1 to 50 (cm ³ / cm ² · sec). A gentle flow of air occurs from the pile side to the backing layer side, or from the backing layer side to the pile side, and the scent component is dissipated in this flow, while the malodorous component in the air becomes a gentle flow of air. Get in contact with the deodorant and get rid of it efficiently.

  Further, in order to make the effect of the present invention more effective, the fragrance 7 and the deodorant 8 may be carried on the backing layer 6 of the carpet 1. In addition, antibacterial agents such as silver, pile yarns and eyes are used to prevent spoilage odors caused by the propagation of various bacteria that adhere to dirt that cannot be removed, such as food dropped on the carpet 1 while using the carpet. It can be fixed to the stop layer as long as the invention is not hindered.

  The sealing layer 5 is not particularly limited, but is preferably made of a foamed latex having air permeability. Examples of the resin component include resins such as acrylic, urethane, polyvinyl chloride, polyethylene, polypropylene, and ethylene-vinyl acetate copolymer (EVA). Examples of the rubber component of the rubber composition include SBR (styrene-butadiene rubber), NBR (acrylonitrile-butadiene rubber) MBR (methyl methacrylate-butadiene rubber), natural rubber, and the like, but the resin itself such as SBR. However, those that do not emit strong odors are preferred. Foaming is mechanical foaming, and foaming ratio is preferably 1.2 or more. By sufficiently foaming, it becomes easy to form open cells when the foamed latex is applied and dried, and air permeability is ensured. A roll coating method is preferred as a method for applying the foamed latex. In addition, in the sealing layer 5, a deodorant and a fragrance are kneaded, and if the deodorant and the fragrance have a structure in contact with the open cells, air flowing gently through the continuous holes, Deodorant and fragrance can come into contact with each other and effectively exert a deodorant effect and fragrance action.

The air permeability of the sealing layer 5 is designed to be in the range of about 1 to 50 (cm ³ / cm ² · sec), and the air permeability in the thickness direction of the entire carpet is 1 to 50 (cm ³ / It is preferable to design so that it may be in the range of cm ² · sec. When the air permeability is less than 1 (cm ³ / cm ² · sec), the air hardly moves in the carpet, and the deodorization and aroma action cannot be effectively exhibited. Further, a carpet exceeding 50 (cm ³ / cm ² · sec) is not a carpet that can withstand practical use.

In the present invention, the material of the pile yarn 2 is not particularly limited, and polyester fiber, polyamide fiber, polypropylene fiber, acrylic fiber, rayon fiber, etc. can be suitably used, and other hemp, cotton, wool, etc. Natural fibers can be used, but those that do not emit odor from the fibers themselves are preferred. The pile may be a cut pile or a loop pile. The basis weight of the pile yarn 2 is preferably set to ²⁰⁰ to 2000 g / m ² . If it is less than 200 g / m ² , the function as a carpet is inferior, and if it exceeds 2000 g / m ² , air permeability cannot be sufficiently obtained, which is not preferable.

The base material as the base fabric 3 may be of any material and form. Examples of the material include thermoplastic fibers such as polyester fibers, polyamide fibers, and polyolefin fibers, and composite fibers of these fibers. Examples thereof include semi-synthetic fibers such as acetate, regenerated fibers such as rayon, natural fibers such as hemp and cotton, and blended fibers thereof, but those which do not smell the fibers themselves are preferable. Examples of the base fabric include a woven fabric, a knitted fabric, and a non-woven fabric. A spunbonded non-woven fabric having good air permeability, cost, performance, and the like is preferable. The basis weight of the base fabric 3 is preferably set to 80 to 150 g / m ² . If it is less than 80 g / m ^2, it is difficult to stably hold the pile yarn 2, which is not preferable. If it exceeds 150 g / m ² , sufficient air permeability cannot be obtained, which is not preferable in terms of cost.

  Examples of the fragrance include fragrances such as rose, jasmine, lemon, orange, cypress, etc. These fragrances are enclosed in a melamine resin film material to produce melamine microcapsules. This perfume microencapsulation is made according to conventional methods. The particle size of the melamine microcapsule is not particularly limited, but it needs to have a particle size and strength that can be gradually destroyed when a person walks on the carpet. The particle size is 30-50 μm, and the pressure from the outside due to use It is preferable to have a size that breaks. In addition, it is preferable that the melamine microcapsule has a fragrance component directly supported on the surface because the scent diffuses from the beginning.

The carrying amount of the fragrance on the carpet is preferably ² to 25 g / m ² , although it varies depending on the concentration and type of the fragrance component. If it is less than 2 g / m ^2, it is not preferable because sufficient fragrance performance cannot be obtained. Moreover, even if it exceeds 25 g / m < ² >, an odor density | concentration becomes high and even if it is a good fragrance, it is unpreferable from being unpleasant odor depending on a person. As a method of carrying the fragrance on the carpet, it is preferable to carry the fragrance by kneading it into the sealing layer.

  In addition, fragrances such as rose, jasmine, lemon, orange, hinoki are hardly decomposed or adsorbed by a deodorant composed of a hydrazine derivative and an inorganic substance, and exhibit a sufficient fragrance effect for a long time. Dissipates the scent.

  As the deodorant, a deodorant composed of a hydrazine derivative and an inorganic substance is preferable. Examples of the hydrazine derivative include those obtained by reacting a hydrazine compound and a long-chain aliphatic compound, or those obtained by reacting a hydrazine compound and an aromatic compound. Among them, one or two compounds selected from the group consisting of hydrazine and semicarbazide, and a group consisting of monocarboxylic acid having 8 to 16 carbon atoms, dicarboxylic acid, aromatic monocarboxylic acid, and aromatic dicarboxylic acid are selected. A reaction product with one or more compounds, or one or two compounds selected from the group consisting of hydrazine and semicarbazide, and a group consisting of monoglycidyl derivatives and diglycidyl derivatives having 8 to 16 carbon atoms. Reaction products with one or more compounds are preferred. Specific examples of the reaction product include sebacic acid dihydrazide, dodecanoic acid dihydrazide, and isophthalic acid dihydrazide. However, the reaction product is not particularly limited to these exemplified compounds. By using such a hydrazine derivative, excellent malodor removal performance can be ensured. In particular, it exhibits an excellent effect on the chemical adsorption action of acetaldehyde, which is said to be contained in a large amount in tobacco odor.

  Examples of the inorganic substance include activated carbon, zeolite, barley stone, silica gel, and metal oxides such as alumina, titanium oxide, zinc oxide, and iron oxide, but are not particularly limited to these examples. Absent. By using such an inorganic substance in combination, it is possible to effectively deodorize malodors in combination with the action of the hydrazine derivative.

  In the present invention, a porous inorganic substance is preferably used as the inorganic substance. Since it is porous, it has a large surface area and an excellent ability to absorb malodors. For example, examples of such a porous inorganic substance include the aforementioned activated carbon, zeolite, and the like. Among them, it is preferable to use a zeolite having an excellent adsorption ability for acetic acid, ammonia and the like.

The amount of the deodorant carried on the carpet is preferably ² to 50 g / m ² . If it is less than 2 g / m ^2, it is not preferable because sufficient malodor removal performance cannot be obtained. Moreover, even if it exceeds 50 g / m < ² >, there is no big improvement in a deodorizing performance, and it will increase cost easily, and is unpreferable. As a method for supporting the deodorant on the carpet, the pile yarn is supported via a binder resin, or is mixed and supported in the sealing layer.

Moreover, in this invention, another functional material can be mixed simultaneously with the said deodorizer. For example, an antibacterial agent may be mixed in the latex. The antibacterial agent is preferably one or more metals selected from zinc, copper, and silver, and compounds thereof. Specific examples include silver zeolite, silver-supported diboron trioxide, silver-supported zirconium phosphate, silver oxide, zinc oxide, copper zeolite, and copper phosphate. Among these, silver compounds are preferably used because they have a large antibacterial effect and low toxicity to the human body. Moreover, as a carrying amount, it is good that 0.5-20 g / m < ² > of antimicrobial agents are carried. Less than 0.5 g / m ² is not preferable because sufficient antibacterial performance cannot be obtained. Moreover, even if it exceeds 20 g / m < ² >, there is no big improvement in antibacterial performance, and it will increase cost easily, and is not preferable.

  In addition, in the present invention, in addition to the fragrance, deodorant, and antibacterial agent, various additives such as a dispersant, a thickener, and a foam are added to the latex as necessary in order to improve the properties of the latex. For the purpose of improving various properties of carpets, additives such as flame retardants, antioxidants, and UV absorbers may be added as long as they do not interfere with the present invention. It can also mix | blend suitably.

Further, in FIG. 1, as an example of the present invention, a form of a carpet in which a backing layer 6 (with air permeability) is bonded to the lower side of the sealing layer 5 is shown. In this case, the backing layer plays a role of imparting cushioning properties to the carpet, preventing the sealing layer 5 from coming into direct contact with the floor surface, and protecting the sealing layer 5 and the floor surface. The backing layer 6 is preferably a breathable nonwoven fabric such as a needle punched nonwoven fabric or a spunbonded nonwoven fabric. The basis weight of the backing layer 6 is preferably 50 to 1000 g / m ² , its thickness is set to 0.5 to 15 mm, and the fineness of the constituent fibers is preferably set to a range of 0.1 to 30 dtex. The basis weight of the backing layer 6 is less than 50 g / m ^2, which is not preferable because the function and quality of the carpet are inferior. If it exceeds 1000 g / m ² , air permeability cannot be sufficiently obtained, which is not preferable. The material is not particularly limited as in the case of pile yarn and base fabric, but it is desirable to unify polyester fibers together with the pile yarn and base fabric from the viewpoint of recyclability.

  As described above, in FIG. 1, the backing layer 6 is laminated on the lower side of the sealing layer and then dried. The drying means is not particularly limited, but heat treatment is preferable from the viewpoint of drying efficiency. The heat treatment temperature is preferably 100 to 180 ° C. By heat treatment at this temperature, open cells are generated and a breathable sealing layer is formed. When the backing layer is laminated, a strong adhesive force can be obtained.

  In addition, the evaluation method of the deodorization test in this invention and the measuring method of fragrance performance are as follows.

<Deodorization performance measurement>
(Ammonia deodorization performance)
After putting a test carpet piece (10 cm x 20 cm) in a bag with an internal volume of 500 ml, inject ammonia gas so that the concentration is 200 ppm in the bag, and measure the residual concentration of ammonia gas after 1 hour. Then, the total amount of ammonia gas removed was calculated from the measured value, and the ammonia gas removal rate (%) was calculated from this.

(Hydrogen sulfide deodorization performance)
The removal rate (%) of hydrogen sulfide was calculated in the same manner as in the ammonia deodorization performance measurement except that hydrogen sulfide gas was used instead of ammonia gas and the concentration was 20 ppm in the bag.

(Formaldehyde deodorization performance)
The formaldehyde gas was used instead of ammonia gas so that the concentration was 80 ppm in the bag, and the remaining concentration of formaldehyde gas was measured after 4 hours. The removal rate (%) was calculated.

  And, “◎” when the removal rate is 95% or more, “◯” when the removal rate is 80% or more and less than 95%, “△” when the removal rate is 70% or more and less than 80%, Those having a removal rate of less than 70% were evaluated as “x”, and the results shown in Table 1 were obtained. “O” or higher was accepted.

<Aroma performance measurement>
As a sensory test, put a test carpet piece (10 cm x 20 cm) in a 500 ml bag and leave it for one hour, and after 6 hours, the six-step odor display method and the nine-step pleasant / discomfort display method shown in Table 1 Based on the results, the aroma performance was evaluated with seven monitors, and the results shown in Table 2 were obtained. An average odor intensity of 2 to 3 and an average pleasantness / discomfort degree of 0 or more were determined to be acceptable.

<Example 1>
First, pile yarn made of polyester fiber is planted on a spunbond nonwoven fabric made of polyester fiber (weighing 110 g / m ² ) with a tufting machine to create a skin layer having a pile length of 7 mm and a pile weight of 700 g / m ^2. Further, after adding foaming agent to SBR latex (SBR content 50% by weight) as a sealing layer and mechanical foaming (foaming ratio 1.2), sebacic acid dihydrazide and zeolite were mixed one-on-one as deodorant. Composition (average particle size: 8 μm, 4.0% by weight with respect to SBR), melamine microcapsules encapsulating cypress components as fragrance (2.0% by weight with respect to SBR), calcium carbonate (SBR) as filler 30% by weight) and immediately applied by roll coating as a 400 g / m ² stop layer, and further coated with polyester fiber. A needle punched nonwoven fabric (3.4 dtex, thickness 3 mm, basis weight 100 g / m ² ) was laminated on the sealing layer as a backing layer and dried at 150 ° C. for 15 minutes to obtain a carpet. The carpet, deodorant 16.0 g / ^{m 2,} fragrances have been 8.0 g / ^{m 2} coating. Various deodorization tests and fragrance performance evaluations were performed and listed in Table 2, and good evaluation was obtained.

<Example 2>
Example 1 except Example 1 except that the amount of deodorant was increased (a composition in which sebacic acid dihydrazide and zeolite were mixed on a one-to-one basis (average particle size: 8 μm, 8.0% by weight with respect to SBR)). In the same manner, a carpet was obtained. The carpet, deodorant 32.0 g / ^{m 2,} fragrances have been 8.0 g / ^{m 2} coating. Various deodorization tests were conducted and the evaluation is shown in Table 2. It was confirmed that even if the deodorizing ability was improved, the fragrance performance evaluation did not change.

<Example 3>
In Example 1, melamine microcapsules (1.0% by weight based on SBR) in which a deodorizing agent was applied to the pile portion with an acrylic resin binder at 8.0 g / m ² and cypress components were encapsulated as an aromatic in SBR latex. A carpet was obtained in the same manner as in Example 1 except that it was mixed. The carpet, deodorant 8.0 g / ^{m 2,} fragrances have been 4.0 g / ^{m 2} coating. Various deodorization tests were conducted, and the evaluations are shown in Table 2. Good evaluations were obtained.

<Example 4>
Example 3 is the same as Example 3 except that a composition (average particle size is 8 μm, 2.0% by weight with respect to SBR) in which one-to-one mixture of sebacic acid dihydrazide and zeolite is added to SBR latex as a deodorant. In the same manner, a carpet was obtained. The carpet, deodorant 16.0 g / ^{m 2,} fragrances have been 4.0 g / ^{m 2} coating. Various deodorization tests were conducted, and the evaluations are shown in Table 2. Good evaluations were obtained.

<Example 5>
Example 1 was the same as Example 1 except that the composition was a one-to-one mixture of sebacic acid dihydrazide and zinc oxide as a deodorant (average particle size was 6 μm, 4.0% by weight with respect to SBR). A carpet was obtained. The carpet, deodorant 16.0 g / ^{m 2,} fragrances have been 8.0 g / ^{m 2} coating. Various deodorization tests were conducted, and the evaluations are shown in Table 2. Good evaluations were obtained.

<Example 6>
In Example 1, a composition in which sebacic acid dihydrazide and zeolite are mixed one-on-one as a deodorant (average particle size is 8 μm, 8.0% by weight with respect to SBR), and melamine microcapsules encapsulating jasmine as a fragrance A carpet was obtained in the same manner as in Example 1 except that the content was 4.0% by weight with respect to SBR. The carpet, deodorant 32.0 g / ^{m 2,} fragrances have been 16.0 g / ^{m 2} coating. Various deodorization tests were conducted, and the evaluations are shown in Table 2. Good evaluations were obtained.

<Example 7>
After the carpet piece (10 cm × 20 cm) prepared in Example 1 was put in a bag having an internal volume of 500 ml, ammonia gas, hydrogen sulfide gas, and formaldehyde gas were simultaneously injected so that the concentration in the bag was 10 ppm, respectively. After the lapse of 4 hours, only a sensory test for measuring the fragrance performance was performed, and the evaluation was described in Table 2. The odor intensity was 2.7 and the pleasantness / discomfort degree was 1.0, and good evaluation was obtained.

<Comparative Example 1>
In Example 1, a carpet was obtained in the same manner as in Example 1 except that no deodorant was mixed into the SBR latex. Since the carpet does not carry a deodorant, a good deodorizing effect could not be obtained.

<Comparative example 2>
After putting the carpet piece (10 cm × 20 cm) prepared in Comparative Example 1 into a bag having an internal volume of 500 ml, ammonia gas, hydrogen sulfide gas, and formaldehyde gas were injected simultaneously so that the concentration in the bag was 10 ppm. Only the sensory test for measuring the fragrance performance was performed after 4 hours, and the evaluation is shown in Table 2. Various odors and cypress odors were mixed, and satisfactory evaluation was not obtained for pleasantness and discomfort.

<Comparative Example 3>
In Example 1, a carpet was obtained in the same manner as in Example 1 except that no fragrance was mixed into the SBR latex. Various deodorization tests were conducted and the evaluation is shown in Table 2. Although it became a carpet with no odor at all, no carpet with a healing effect was obtained.

<Comparative example 4>
In Example 1, a composition in which sebacic acid dihydrazide and zeolite are mixed one-on-one as a deodorant (average particle diameter is 8 μm, 1.0% by weight with respect to SBR), and melamine micro encapsulated with cypress components as a fragrance. A carpet was obtained in the same manner as in Example 1 except that the capsule (8% by weight with respect to SBR) was used. The deodorant was applied at 4.0 g / m ² and the fragrance was applied at 32 g / m ² . Various deodorization tests and fragrance performance evaluations were performed and listed in Table 2. The fragrance of the fragrance component became too strong and the evaluation was uncomfortable.

It is a schematic sectional drawing which shows the deodorizing carpet which concerns on one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Fragrance and deodorant carpet 2 ... Pile thread 3 ... Base cloth 4 ... Skin layer 5 ... Sealing layer 6 ... Backing layer 7 ... Fragrance 8 ··Deodorants

Claims (4)

  In a carpet including a skin layer composed of a pile yarn and a base fabric, and a sealing layer for fixing the pile yarn and the base fabric, a fragrance is supported on the sealing layer, and the pile yarn and / or A carpet characterized in that a deodorizing agent is supported on a sealing layer.   2. The carpet according to claim 1, wherein the fragrance component of the fragrance is carried on the surface of the melamine microcapsule and encapsulated in the melamine microcapsule.   The carpet according to claim 1 or 2, wherein the deodorant contains a hydrazine derivative and an inorganic substance. The carpet according to any one of claims 1 to 3, wherein the fragrance is carried by ² to 25 g / m ² and the deodorant is carried by ² to 50 g / m ² .