JP3053373B2 - Curing sheet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curing sheet for protecting a construction such as a floor surface which has already been constructed during construction of a building such as a house.

[0002]

2. Description of the Related Art Conventionally, for example, when constructing a building such as a house, after constructing a floor surface, it is necessary to perform an interior construction work such as a construction of a wall plate, a sticking of a wallpaper and an installation of a sink, etc. Is being done. However, when performing interior construction, etc., the construction worker will go up on the already-constructed floor surface, so lay a curing sheet made of polyvinyl chloride or the like on the floor surface to protect the floor surface. It is generally done.

In recent years, most building materials used for floors are plywood, and formaldehyde, which is vaporized and dispersed from an adhesive such as urea resin used for plywood, is used not only by residents but also by building workers. The irritating odor may also give the person a disgust, and may impair the health of the person who inhales.

[0004]

However, conventionally,
During construction work, no means is taken to actively remove odor components such as formaldehyde, or only measures such as opening windows and ventilating to remove odor components such as formaldehyde from the room are taken. It is not at present.

[0005] Even if the building work is performed while ventilating in this way, formaldehyde is once generated from the floor surface and only part of it is removed with the wind after being dispersed in the room, so the building worker eventually sucks the formaldehyde. And the irritating odor is felt. In addition, since odor components such as formaldehyde cannot be sufficiently removed at the time of construction by such means, residents who move in after construction also feel an irritating odor,
In addition, it is not preferable for health.

[0006] In view of the above-mentioned conventional problems, the present invention is intended to efficiently remove odor components such as formaldehyde generated in buildings such as houses and at least eliminate the odor of aldehydes such as formaldehyde. It is an object to provide a curing sheet that can be used.

[0007]

In order to solve the above-mentioned problems, the present inventor has proposed that the source of aldehydes such as formaldehyde is mainly the floor, and that the curing sheet is placed on the floor during construction work. The following measures were taken, paying attention to the point where That is, one surface side 1a of the seat body 1 is placed on the floor surface.
A curing sheet to be laid on the sheet body 1 ;
Emitted on front side 1a or on both front sides (at least one front side 1a)
A non-slip portion 3 made of a foamable rubber body is provided,
An object of the present invention is to use a curing sheet having at least an adsorbent for adsorbing aldehydes on the body . Here, the aldehyde means a compound represented by the general formula R-CHO, and examples include formaldehyde and acetaldehyde.

[0008] Since the curing sheet having the above structure is provided with an adsorbent for adsorbing at least aldehydes on the sheet body 1, if the curing sheet is laid on the floor after the floor is constructed, Not only the floor surface is protected by the main body 1, but also at least the odor component of aldehydes such as formaldehyde is adsorbed by the adsorbent and is removed from the air. In addition, a foamable rubber body is
Is provided on the floor.
Hard to slip when seated, preventing the sheet from shifting
In particular, an adsorbent is provided in the foamable rubber body.
Therefore, the area where the adsorbent comes into contact with air is increased,
Odor components such as formaldehyde are quickly adsorbed
Become.

Examples of the sheet body 1 include known woven sheets of synthetic fibers such as polypropylene and / or natural fibers such as hemp, non-woven sheets of chemical fibers and / or natural fibers, and molded sheets of synthetic resin. However, in consideration of strength, cost and the like, it is preferably made of a synthetic resin, and more preferably a sheet having good air permeability such as a woven or nonwoven fabric.

The adsorbent is not particularly limited as long as it can adsorb at least aldehydes such as formaldehyde and acetaldehyde. For example, aldehydes are contained in molecules such as hydrazide compounds, azole compounds and azine compounds. Chemical adsorbents that bind and adsorb, etc. and perlite, zeolite, silica gel, physical adsorbents such as activated carbon etc. that confine and adsorb aldehydes etc. in micropores, etc. A chemical adsorbent is preferable in consideration of the adsorption speed, the effect continuity, and the like. Among the chemical adsorbents, a hydrazide compound is preferable from the viewpoint of the adsorption ability such as the adsorption speed and the adsorption amount. When a hydrazide compound is used, not only the aldehydes,
There is an advantage that it has the ability to adsorb ketones such as acetone and methyl ethyl ketone which are often used in paints and building materials.

The hydrazide compound is not particularly limited, and may be a monohydrazide compound having one hydrazide group in the molecule, a dihydrazide compound having two hydrazide groups in the molecule, or three or more hydrazide groups in the molecule. And the like.

Specific examples of the monohydrazide compound include:
For example, the general formula R—CO—NHNH ₂ (1)
R represents a hydrogen atom, an alkyl group or an aryl group which may have a substituent.].

In the general formula (1), examples of the alkyl group represented by R include a methyl group, an ethyl group, and an n group.
-C 1 -C 1 -propyl, n-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-nonyl, n-decyl, n-undecyl
Twelve linear alkyl groups can be mentioned. Examples of the aryl group include a phenyl group, a biphenyl group, a naphthyl group and the like, and among these, a phenyl group is preferable. Further, as a substituent of the aryl group,
For example, hydroxyl group, halogen atom such as fluorine, chlorine, bromine, etc., methyl group, ethyl group, n-propyl group, iso-propyl group, n-butyl group, tert-butyl group, iso
A linear or branched alkyl group having 1 to 4 carbon atoms such as -butyl group.

More specifically, the hydrazide compound of the above general formula (1) includes lauric hydrazide, salicylic hydrazide, form hydrazide, acetohydrazide, propionic hydrazide, p-hydroxybenzoic hydrazide, naphthoic hydrazide, 3 -Hydroxy-
Examples thereof include 2-naphthoic acid hydrazide.

Specific examples of the dihydrazide compound include, for example, a general formula H ₂ NHN—X—NHNH ₂ (2) wherein X represents a group —CO— or a group —CO—A—CO—. A represents an alkylene group or an arylene group].

In the above formula (2), examples of the alkylene group represented by A include a methylene group, an ethylene group, a trimethylene group, a tetramethylene group, a pentamethylene group, a hexamethylene group, a heptamethylene group, an octamethylene group, Examples thereof include a linear alkylene group having 1 to 12 carbon atoms such as a nonamethylene group, a decamethylene group, and an undecamethylene group. As an arylene group, for example,
Phenylene group, biphenylene group, naphthylene group, anthrylene group, phenanthrylene group and the like,
Of these, a phenylene group and a naphthylene group are preferred. Examples of the substituent of the arylene group include the same substituents as those of the above-described aryl group.

Specific examples of the dihydrazide compound represented by the general formula (2) include oxalic acid dihydrazide, malonic acid dihydrazide, succinic acid dihydrazide, adipic acid dihydrazide, azelaic acid dihydrazide, sebacic acid dihydrazide, dodecane diacid dihydrazide, And dibasic acid dihydrazides such as maleic acid dihydrazide, fumaric acid dihydrazide, diglycolic acid dihydrazide, tartaric acid dihydrazide, malic acid dihydrazide, isophthalic acid dihydrazide, terephthalic acid dihydrazide, dimer acid dihydrazide, and 2,6-naphthoic acid dihydrazide. Further, various dibasic acid dihydrazide compounds described in JP-B-2-4607, 2,4-dihydrazide-6-
Methylamino-sym-triazine and the like can also be used as dihydrazide.

Specific examples of the polyhydrazide compound include polyacrylic hydrazide.

Of these, dihydrazide compounds are preferred, dibasic dihydrazide is particularly preferred, and adipic acid dihydrazide having the fastest adsorption rate is provided.
Are more preferred. Also, adipic dihydrazide is water-soluble and hardly volatilizes, so that it is well dissolved and dispersed in a rubber emulsion to be described later, and hardly volatilizes after molding.
The above hydrazide compounds can be used alone or as a mixture of two or more, or can be used as a mixture with an azole compound.

As the azole compound and the azine compound, well-known 5- or 6-membered heterocyclic compounds having two or three nitrogen atoms as hetero atoms can be widely used. These heterocyclic compounds include a linear or branched alkyl group having about 1 to 4 carbon atoms, 1 or 2
An aryl group which may have at least two substituents, a hydroxyl group, an amino group, an alkylamino group, a dialkylamino group, an arylamino group, a diarylamino group, a mercapto group, an ester group, a carboxyl group, a benzotriazolyl group, 1
One or more substituents such as -hydroxybenzotriazolyl group may be substituted. Here, carbon number 1-4
Examples of the degree of linear or branched alkyl group include methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, tert-butyl and the like.

Examples of the azole compound include a diazole compound, a triazole compound, a thiadiazole compound and the like, and a diazole compound and a triazole compound are preferably used.

Specific examples of the diazole compound include, for example, 3-methyl-5-pyrazolone, 1,3-dimethyl-
5-pyrazolone, 3-methyl-1-phenyl-5-pyrazolone, 3-phenyl-6-pyrazolone, 3-methyl-
Pyrazolone compounds such as 1- (3-sulfophenyl) -5-pyrazolone, pyrazole, 3-methylpyrazole,
1,4-dimethylpyrazole, 3,5-dimethylpyrazole, 3-5-dimethyl-1-phenylpyrazole, 3
-Aminopyrazole, 5-amino-3-methylpyrazole, 3-methylpyrazole-5-carboxylic acid, 3-methylpyrazole-5-carboxylic acid methyl ester, 3-methylpyrazole-5-carboxylic acid ethyl ester, 3,
Pyrazole compounds such as 5-methylpyrazoledicarboxylic acid and the like can be mentioned.

Specific examples of the triazole compound include, for example, 1,2,3-triazole, 1,2,4-triazole, 3-n-butyl-1,2,4-triazole,
3,5-dimethyl-1,2,4-triazole, 3,5
-Di-n-butyl-1,2,4-triazole, 3-mercapto-1,2,4-triazole, 3-amino-
1,2,4-triazole, 4-amino-1,2,4-
Triazole, 3,5-diamino-1,2,4-triazole, 5-amino-3-mercapto-1,2,4-triazole, 3-amino-5-phenyl-1,2,4-
Triazole, 3,5-diphenyl-1,2,4-triazole, 1,2,4-triazol-3-one, urazole (3,5-dioxy-1,2,4-triazole), 1,2,4 -Triazole-3-carboxylic acid, 1
-Hydroxybenzotriazole, 5-hydroxy-7
-Methyl-1H-benzotriazole, 5-methyl-1
H-benzotriazole and the like can be mentioned.

Examples of the azine compound include a diazine compound, a triazine compound, a pyridazine compound and the like, and among these, a pyridazine compound is preferably used. Specific examples of the biridazine compound include, for example, 6-methyl-8-hydroxytriazolobiridazine, 4,5-dichloro-3-viridazine, maleic hydrazide, 6-methyl-3-viridazone, and the like.

Of these, azole compounds are preferable, and triazole compounds such as 1,2,4-triazole and 1,2,3-triazole, pyrazole compounds such as 3,5-dimethylpyrazole, and 3-methyl-5-pyrazolone. And the like are particularly preferred. The azole compound and the azine compound can be used alone or in combination of two or more.

As means for providing the above-mentioned adsorbent in the sheet body 1, the adsorbent may be applied to the surface of the sheet body 1,
The adsorbent is narrowed between two or more sheet bodies 1 and laminated, or the sheet body 1 and the adsorbent sheet containing the adsorbent are formed as separate bodies, and both are adhered at the time of use. Various means can be used, such as adding an adsorbent to the composition itself. For example, when a physical adsorbent such as silica gel is used, the cured sheet according to the present invention is formed by dispersing the physical adsorbent together with an adhesive on the surface of the sheet body 1. When a chemical adsorbent such as a hydrazide compound is used, an appropriate amount of the adsorbent is mixed with a known synthetic resin such as vinyl acetate or polyurethane in consideration of the binding property with the sheet body 1 and durability. The curing sheet according to the present invention is constituted by applying the composition to the surface of the sheet body 1 or the like.

In the present invention, one surface of the sheet body 1
Slip made of a foamable rubber body provided on the side 1a or both surface sides
The stopper 3 is provided with the above adsorbent. According to the curing sheet in which the non-slip portion 3 made of a foamable rubber body is provided on at least one surface side 1a of the sheet body 1, it is difficult for the sheet to slip when laid on the floor surface, and the sheet is displaced. Can be prevented. In addition, since the adsorbent is provided in the foamable rubber body, the area where the adsorbent comes into contact with air is widened, and odor components such as formaldehyde are quickly adsorbed.

The rubber body is not particularly limited, and isoprene rubber, chloroprene rubber, butadiene rubber, styrene-butadiene rubber, butyl rubber, acrylonitrile-
Known rubbers such as butadiene rubber, silicone rubber and urethane rubber may be used, and among them, styrene-butadiene rubber which has high versatility and can be molded at a relatively low temperature is preferable.

The means for foaming is not particularly limited, and can be appropriately selected from known organic foaming agents and inorganic foaming agents. Carbon dioxide, freon, methylene dichloride, pentane, air And the like can also be used.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a curing sheet according to the present invention will be described. <First Embodiment> In FIG. 1, reference numeral 1 denotes a sheet body formed into a cloth having a predetermined width by weaving a tape yarn of a chemical fiber such as polypropylene in a vertical and horizontal direction. On one surface side 1a of the sheet body 1, a slipper made of a foamable rubber body containing an adsorbent capable of adsorbing at least aldehydes on foamable styrene-butadiene rubber (hereinafter abbreviated as “SBR” as appropriate) is provided. A stop 3 is provided. As the adsorbent, adipic dihydrazide (hereinafter abbreviated as “ADH” as appropriate)
Is used.

The non-slip portion 3 is provided on one surface side 1a of the seat body 1.
The coating is applied to the entire surface, and long projections 3a in a lattice shape in a plan view are protruded to form irregularities.

The method for producing such a cured sheet is not particularly limited, but in the case of SBR which can be processed at a relatively low temperature, for example, the following production method by mechanical foaming is preferable. As shown in FIG.
The emulsion and ADH (powder or emulsion) are charged and mixed, and agitated with an agitator 5 to form a whipped viscous liquid. In addition, additives such as a stabilizer are mixed if necessary.

The viscous liquid is guided from the stirrer 5 to one surface side 1a of the sheet main body 1, adjusted to a uniform thickness by the doctor knife 6, and heated at 130 to 160 ° C. by the preheater 8 to obtain the viscous liquid. Is then gelled, and then guided to a forming roller 7 having irregularities formed on the surface, and embossed to form a sheet body 1.
A non-slip portion 3 is formed on one surface side 1a of the substrate. Further, curing 9 is performed for a predetermined time to stabilize the non-slip portion 3 made of a foamable rubber body, and the cured sheet 10 is wound up in a roll shape.

The curing sheet having the above configuration is laid on the already constructed floor surface with the non-slip portion 3 in contact with the floor surface during construction work. Since such a curing sheet is provided with at least an adsorbent for adsorbing aldehydes, aldehyde groups such as formaldehyde generated from plywood and AD are not used.
The hydrazide group of H is bonded, and odor components such as formaldehyde are quickly adsorbed by the adsorbent, and can be prevented from being dispersed in the room.

Therefore, the construction worker does not inhale the odor components such as formaldehyde and the like, and since the odor components involved during the construction work are removed, the formaldehyde and the like hardly disperse into the room even when moving in. In other words, since the room is deodorized before moving in, the resident hardly feels a bad smell. Of course, as long as the adsorption capacity of the adsorbent does not significantly decrease, after one building is completed, it can be used for the next building.

Further, since a non-slip portion 3 made of a foamable rubber body is provided on the front surface side of the sheet body 1, the non-slip portion 3 is in close contact with the floor surface, and the curing sheet is formed during the construction work. Position shift can be prevented.

Further, since the rubber body is foamed and the foamable rubber body is provided with an adsorbent, the area where the air and the adsorbent come into contact with each other is increased by the innumerable fine pores. There is an advantage that a large amount of odor components such as formaldehyde can be quickly and adsorbed.

Further, since the sheet body 1 is made of a woven sheet, air can pass through gaps between the fibers.
Therefore, not only odor components such as formaldehyde generated from the floor surface but also odor components existing in the indoor air are adsorbed by the adsorbent through the sheet body 1 and removed from the room.

In this embodiment, ADH which is a dihydrazide compound is used as an adsorbent, but other adsorbents described in detail above may be used. However, among the dihydrazide compounds, ADH is not only excellent in the adsorption of aldehydes, but also water-soluble and hardly volatilized because it has four methylene groups. In addition, there is an advantage that the mixture can be easily mixed and molded, and since it is difficult to volatilize after molding, the adsorption ability can be surely maintained.

In this embodiment, the rubber body is SB.
Although R is used, another rubber body may be used as described above. However, versatile SBR is relatively inexpensive,
In addition, since foam molding can be performed at a relatively low temperature, there is an advantage that it is difficult to lower the adsorbing ability of the mixed ADH.

Further, in the present embodiment, the non-slip portion 3
Is provided on the entire front surface 1a of the seat body 1, but the non-slip portion 3 is not necessarily limited to the case where the non-slip portion is provided on the entire surface. For example, as shown in FIG. The one-side surface 1a may be provided in a strip shape, or the non-slip portion 3 may be provided in one-side surface 1a on the one-side surface 1a of the seat body 1 as shown in FIG.

Further, in the present embodiment, the non-slip portion 3
Although it is provided only on one surface side 1a of the seat body 1, although not particularly shown, the nonslip portions 3 may be provided on both surface sides of the seat body 1, respectively.

Means for removing odor components by providing the above-described various adsorbents in wallpaper or the like can be considered. However, providing an adsorbent in the curing sheet as in the present invention deodorizes the interior of the room. This is particularly significant in that respect. That is, the odor components such as formaldehyde are mainly generated from the adhesive of the plywood, and if an adsorbent for adsorbing the odor components on the curing sheet is provided, the odor components are not dispersed in the room, On the other hand, if the adsorbent is provided in the wallpaper or the like, the odor component is once dispersed and then adsorbed in the room, so that the construction worker or the resident will suck the odor component.

<Second Embodiment> The present embodiment relates to a cured sheet having a laminated structure in which an adsorbent is provided inside the sheet main body 1, and the description of the same parts as those in the first embodiment will be omitted, and the drawings will be omitted. The numbers are quoted. In FIG. 5, a sheet main body 1 is formed of a nonwoven fabric of a chemical fiber such as polypropylene, and is divided into two sheets.

An adsorbing section 11 provided with an adsorbent such as ADH is provided between the sheet bodies 1. The suction section 11
May be made of a foamable rubber body mixed with an adsorbent as in the first embodiment, or may be made into a sheet-like molded product by adding an adsorbent to a known synthetic resin, and the molded product May be adhered to the sheet body 1.

In the curing sheet having the above structure, the odor component such as formaldehyde passes through the sheet body 1 and is adsorbed by the adsorbent.

In the present embodiment, a non-slip portion 3 made of a rubber body may be provided on at least one of both surface sides 1a and 1b of the sheet main body 1. The non-slip portion 3 may be foamed and may be provided with an adsorbent.

Further, in the present embodiment, the suction section 11 is formed of one layer, but may be formed in a plurality of layers.

<Third Embodiment> This embodiment relates to a curing sheet having a structure in which an adsorbent is contained in the composition itself constituting the sheet body, and the description of the same parts as those in the first embodiment will be omitted. The drawings are not specifically shown. The sheet body has a smooth surface obtained by mixing an adsorbent such as ADH with a known synthetic resin such as polyvinyl chloride, ethylene vinyl acetate copolymer, polyolefin resin such as polyethylene and polypropylene, and extruding the resin material. It is formed in a shape.

In the curing sheet having the above structure, since the sheet body itself is provided with an adsorbent, odor components such as formaldehyde are adsorbed from the surface.

In this embodiment, the seat body is
Although formed into a smooth surface, a synthetic resin mixed with an adsorbent such as ADH may be spun into a fibrous material, and the chemical fiber may be formed into a woven or nonwoven fabric. In addition, a slip portion made of a rubber body may be provided on at least one of both surface sides of the sheet body 1, and the slip portion may be foamed or may be provided with an adsorbent. .

<Fourth Embodiment> In the present embodiment, the sheet main body and the adsorbent containing the adsorbent are formed separately,
Regarding a curing sheet having a structure in which the adsorbent is attached to a sheet body, a description of a portion overlapping with the first embodiment is omitted,
The numbers in the drawings are incorporated.

In FIG. 6, the adsorbent 12 is formed in a band shape by mixing an adsorbent such as ADH with a known synthetic resin. The adsorbent 12 is coated with a pressure-sensitive adhesive or the like, and the adsorbent 12 is wound into a roll to form a winding tape 14. The curing sheet according to the present embodiment includes an adsorbent
12 is attached to the sheet body 1 at an arbitrary position.

According to the curing sheet having the above structure, when the adsorbent sufficiently adsorbs odor components such as formaldehyde and the adsorbing ability is significantly reduced, the adsorbent 12 can be replaced.
There is an advantage that a curing sheet that adsorbs odor components again can be formed. Note that the adsorbent 12 exemplified in the present embodiment can also be attached to a conventionally used curing sheet.

[0055]

EXAMPLES Hereinafter, the effects of the cured sheet according to the present invention will be specifically described with reference to Examples 1 to 6 and Comparative Examples. In each of Examples 1 to 6 and Comparative Example, a curing sheet having the same configuration as that of the first embodiment was used. That is, foamable SBR having a foaming ratio shown in Table 1 below is provided on one surface side of the sheet body.
A non-slip portion (made by mechanical foaming) is provided, and the manufacturing method (forming temperature 1) described in the first embodiment is used.
35 ° C). In addition, 210 g / m < ² > of foamable SBR was apply | coated to each curing sheet.

(Examples 1 to 3) The sheet bodies of Examples 1 to 3 consist of a woven sheet obtained by plain weaving a tape yarn made of polypropylene (amount of polypropylene 100 g /
m ² ). In addition, as an adsorbent, AD of each weight% shown in Table 1
H is mixed with the foamable SBR. (Examples 4 to 6) The sheet bodies of Examples 4 to 6 consist of a polyester nonwoven fabric sheet (polyester amount 95
g / m ² ). Further, ADH of each weight% shown in Table 1 is mixed with the foamable SBR as an adsorbent.

(Comparative Example) The sheet body of the comparative example was made of a woven sheet obtained by plain weaving a tape yarn made of polypropylene (amount of polypropylene: 100 g / m ² ). ADH is not mixed in the foamable SBR.

(Test Method and Results) Each of the cured sheets of Examples 1 to 6 and Comparative Example was cut into a size of 5 cm × 5 cm to form a test piece. Aluminum foil was stuck. Further, a gas-impermeable tape is stuck on the aluminum foil, and the gas-impermeable tape is stuck on the periphery of the back side of the sheet body by 5 mm each, and an opening window of 4 cm × 4 cm is formed on the back side of the sheet body. The gas was shut off leaving.

After the test piece is set up in a glass container having a volume of 415 ml, a commercially available 90% acetaldehyde aqueous solution is diluted with 5 ° C. water, and the acetaldehyde aqueous solution is dropped on the bottom of the glass container using a micro cylinder. The opening of the glass container was closed with a gas-impermeable film (trade name: Ciron Film, manufactured by Fuji Photo Industry Co., Ltd.), and the concentration of acetaldehyde in the container was adjusted to 470 ppm. After the container was allowed to stand in a sealed state at room temperature of 25 ° C. for 60 hours, the air in the container was sucked by a gas suction device, and the gas detector tube NO. Using 92 (manufactured by Gastech), the concentration of acetaldehyde was measured. Table 1 shows the results.

[0060]

[Table 1]

In all of Examples 1 to 6, acetaldehyde was completely removed from the air in the container, and in the comparative example, a very small amount of acetaldehyde was removed. From these results, it was demonstrated that the test pieces of Examples 1 to 6 were excellent in acetaldehyde adsorption.

Further, the test pieces used in Examples 1 to 6 were transferred to a glass container having a capacity of 1200 ml, and acetaldehyde was added dropwise.
ppm, and the concentration of acetaldehyde in the container was measured again after 60 hours in the same manner. Table 2 shows the results.

[0063]

[Table 2]

In Examples 2 and 5, acetaldehyde was almost removed, but in Examples 1, 3, 4 and 6, acetaldehyde remained in the air.

Further, with respect to the test pieces used in Examples 2 and 5, acetaldehyde was dropped into the same vessel having a capacity of 1200 ml, and the concentration of acetaldehyde in the vessel was 431.
ppm, and the concentration of acetaldehyde in the container was measured again after 60 hours in the same manner. Table 2 also shows the results.

Table 3 shows the results obtained by converting the total amount of acetaldehyde adsorbed on the test pieces of Examples 1 to 6 and Comparative Example into grams.

[0067]

[Table 3]

From Table 3, it was demonstrated that the larger the amount of ADH, the larger the amount of acetaldehyde adsorbed, and the higher the foaming ratio, the larger the amount of acetaldehyde adsorbed. In this example, acetaldehyde was used as the aldehyde in order to simplify the measurement, but it is obvious to those skilled in the art that other aldehydes such as formaldehyde have the same effect.

[0069]

As described above, the use of the curing sheet according to the present invention not only protects the floor structure and the like, but also absorbs odor components such as formaldehyde generated from the floor surface by the provided adsorbent. Therefore, the odor component is not dispersed in the indoor air, and the odor component already dispersed in the room is also adsorbed and removed from the air.
The interior will be deodorized during construction work. Therefore, not only the construction workers but also the residents do not suck the odor component, so that the odor is hardly felt in the room.

Further , one surface side of the sheet body is placed on the floor surface.
When laid, the curing sheet is less likely to be displaced, and moreover, odor components such as formaldehyde can be absorbed more quickly and in large amounts.

[Brief description of the drawings]

FIG. 1 is a partially omitted perspective view including a cross section showing a first embodiment of a curing sheet according to the present invention.

FIG. 2 is a schematic view showing a method for producing a curing sheet according to the present invention.

FIG. 3 is a partially omitted perspective view including a cross section showing a modified example of the curing sheet of the first embodiment.

FIG. 4 is a partially omitted perspective view including a cross section showing a modified example of the curing sheet of the first embodiment.

FIG. 5 is a sectional view showing a second embodiment of the curing sheet according to the present invention.

FIG. 6 is a partially omitted perspective view showing a fourth embodiment of the curing sheet according to the present invention.

[Description of Signs] 1… Sheet body, 1a… One surface side, 3… Slip section-17-

Continuing from the front page (72) Inventor Seiki Yagi 1256 Kudamatsu, Kishiwada-shi, Osaka Otsuka Chemical Co., Ltd. Kishiwada Office (72) Inventor Katsura Torii 3-2-227 Odori, Chuo-ku, Osaka-shi, Osaka Otsuka Chemical (72) Inventor Yoshihisa Tomotaki 463, Kasuno, Kawauchi-cho, Tokushima City, Tokushima Prefecture Inside the Tokushima Plant, Otsuka Chemical Co., Ltd. 72) Inventor Yoshinobu Abe 463 Kasuno, Kawauchi-cho, Tokushima City, Tokushima Prefecture Inside the Tokushima Plant of Otsuka Chemical Co., Ltd. (56) References JP-A-10-102782 (JP, A) JP-A-4-353167 (JP, A) JP-A-9-78452 (JP, A) JP-A-8-208558 (JP, A) JP-A-8-280781 (JP, A) JP-A-6-8613 (JP, U) (58) Fields surveyed (58) Int.Cl. ⁷ , DB name) E04G 21/24 E04G 21/30

Claims (2)

(57) [Claims] 1. One surface side (1a) of a seat body (1) is placed on a floor surface.
One table of a curing sheet laying, the seat body (1) to
Non-slip part made of foamable rubber body on the surface side (1a) or both surface sides
(3) A curing sheet characterized in that the foamable rubber body is provided with an adsorbent for adsorbing at least aldehydes. 2. The method according to claim 1, wherein the adsorbent is at least diadipate.
The curing sheet according to claim 1, comprising a hydrazide compound .