JP3043696U - Formaldehyde absorption laminate - Google Patents

Abstract

(57) [PROBLEMS] To provide a novel formaldehyde absorber having an excellent formaldehyde absorption-removing action and also having an insecticidal, mildew-proof or deodorant action. SOLUTION: The formaldehyde absorber 10 of the present invention
Is a laminate of a plurality of unit members 12 each including a corrugated core raw paper 14 and a plate-shaped liner 16. The core raw paper 14 contains a formaldehyde-absorbing nitrogen-containing compound and / or formaldehyde. It is characterized in that it is made of a paper or fiber base material containing a compound having a benzene ring to be absorbed, and the liner 16 is made of a paper or fiber base material containing an insect repellent, a fungicide or a deodorant.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a formaldehyde absorption laminate having an action of removing formaldehyde (formalin) emitted from various building materials, furniture and the like, and also having an insecticidal, mildewproof or deodorant action.

[0002]

[Prior art]

 Conventionally, construction materials such as wallboards, columns, floorboards, and furniture such as cupboards and wardrobes have been made of resin-processed plywood or fiberboard such as medium density fiberboard (MDF). It is used. However, since the plywood and fiberboard are processed using adhesives and paints containing formaldehyde, such as melamine resin, urea resin, and phenol resin, plywood and fiberboard are used. The phenomenon of formaldehyde emission from manufactured products occurs.

This formaldehyde is a substance that is toxic to the human body, and depending on its concentration, there are problems such as irritation to the eyes and respiratory organs, and odors. It is required to suppress the emission of formaldehyde and remove formaldehyde in the atmosphere. However, it is difficult to suppress the emission of formaldehyde by chemical or physical treatment after the construction materials and furniture are manufactured, and further, the commercial value of the product may be reduced. In addition, it has been attempted to use an adhesive or resin that does not generate formaldehyde when processing plywood or fiberboard, or to use an additive that can suppress the emission of formaldehyde. There was a problem that its performance and price were insufficient.

[0004]

[Problems to be solved by the device]

 On the other hand, in order to absorb and remove formaldehyde emitted in the atmosphere, for example, a deodorized processed paper has been proposed which is impregnated with a solution of a nitrogen-containing compound which absorbs formaldehyde and dried (Japanese Patent Publication No. 52-134). Issue). Since the above deodorized paper is in the form of a sheet, it can be laid on the surface of a floor material, wall material, or installed in a drawer of a drawer, for example. It is possible to effectively absorb and remove formaldehyde emitted from timber and furniture.

However, the number of houses that are highly airtight has been increasing in recent years, and the problem that formaldehyde emitted from building materials, furniture, etc., easily fills the interior of the house, and formaldehyde is absorbed and removed more efficiently. Is required to do. Also, due to the airtightness of the house, the humidity inside the house tends to rise, and there is a problem that insects and molds such as mites occur inside the floor and wall materials, or other than formaldehyde. There is a problem that various odors are easily filled in the house.

Therefore, an object of the present invention is to provide a novel formaldehyde absorption laminate having an excellent formaldehyde absorption-removing action and also having an insect-proof, mildew-proof or deodorant action.

[0007]

[Means for Solving the Problems]

 The formaldehyde absorbing laminate of the present invention is formed by laminating a plurality of unit members each including a corrugated core raw paper and a plate liner, wherein the core raw paper is a nitrogen-containing compound that absorbs formaldehyde and And / or a paper or fiber substrate containing a compound having a benzene ring that absorbs formaldehyde, and the liner is a paper or fiber substrate containing an insect repellent, a fungicide or a deodorant. It is characterized by

Further, another formaldehyde absorbing laminate of the present invention comprises a plurality of unit members each consisting of a corrugated core raw paper and a plate-shaped liner, wherein the core raw paper is i) Paper or fiber substrate containing a nitrogen-containing compound that absorbs formaldehyde and / or a compound having a benzene ring that absorbs formaldehyde, and (ii) paper containing an insect repellent, a fungicide or a deodorant. Alternatively, it is characterized by comprising a fiber base material.

According to the above-mentioned formaldehyde absorbing laminate of the present invention, since the member capable of absorbing and removing formaldehyde is provided with the corrugated step, the surface area of the paper or fiber base material becomes extremely large. Therefore, the contact area with the atmosphere becomes extremely large, and the formaldehyde absorption and removal ability becomes extremely excellent. Further, the formaldehyde absorption laminate of the present invention also has a liner or core raw paper containing an insect repellent, a fungicide or a deodorant. A deodorizing effect can be simultaneously expressed.

[0010]

[Embodiment of the invention]

 Hereinafter, the present invention will be described in detail with reference to FIGS. 1 to 5 showing an embodiment of a formaldehyde absorbing laminate. The formaldehyde absorption laminates 10 and 20 of FIGS. 1 and 2 are formed by laminating a plurality of unit members 12 and 22.

The unit member 12 shown in FIG. 1 is a united product of a corrugated core raw paper 14 and a plate-shaped liner 16 (that is, a one-sided corrugated board-shaped member). On the other hand, the unit member 22 shown in FIG. 2 is a corrugated core raw paper 14 sandwiched between two liners 16 and 18 (that is, a double-sided corrugated board-shaped member). The core raw paper 14 is a paper or fiber substrate containing the above-mentioned nitrogen-containing compound, the above-mentioned compound having a benzene ring, an insect repellent, a fungicide or a deodorant, and is provided with a corrugated step by a conventionally known method. It is a thing. The step size is set according to the size and strength of the absorption laminates 10 and 20, and is not particularly limited. Usually, the amplitude is about 2 to 5 mm and the wavelength is 0. It is set to have a waveform of about 5 to 15 mm.

By providing a corrugated step on the paper or textile material, the surface area of the member becomes extremely large. Therefore, the contact area with the atmosphere becomes extremely large, and the effect of absorbing and removing formaldehyde, insect repellent, fungicide or deodorant is excellent. On the other hand, the liners 16 and 18 are not particularly limited, but similar to the core raw paper 14, a paper or fiber substrate containing the nitrogen-containing compound, the compound having a benzene ring, the insect repellent, the fungicide or the deodorant. It is preferable to be composed of from the viewpoint of further improving the absorption and removal action of formaldehyde, insect repellent action, fungicidal action or deodorant action.

The formaldehyde-absorbing laminates 10 and 20 can have any one of insecticidal action, mildew-proofing action and deodorizing action, in addition to the formaldehyde absorption-removing action. A laminate is obtained. An example of such a combination is shown in FIGS. 3 (a)-(c). For example, as shown in FIG. 3 (a), a unit member 120 in which a core raw paper 140 having a formaldehyde absorption removal action and a liner 160 having an insect repellent action are laminated on the formaldehyde absorption laminate 10 is laminated. As shown in FIG. 1B, a unit member 122 in which a core raw paper 140 having a formaldehyde absorption / removal action and a liner 162 having a fungicidal action are bonded together, and a core raw paper 1 having a deodorizing action is used. 42 and a unit member 124 obtained by laminating the liner 162 together are included.

On the other hand, in the formaldehyde absorption laminate 20, for example, as shown in FIG. 3 (c), the core raw paper 140 having a formaldehyde absorption removing effect is provided with a liner 160 having an insect repellent effect and a liner having an antifungal effect. A unit member 126 sandwiched between 180 and a unit member 128 sandwiched between the liner 160, 180 and a core raw paper 142 having a deodorizing effect are laminated.

Examples of the paper used for the core raw paper 14 and the liners 16 and 18 include various conventionally known paper materials such as kraft paper, high-quality paper, waste paper, thin paper, and board. On the other hand, examples of the fiber base material include non-woven fabrics and woven fabrics. When these fiber base materials are used, there is an advantage that the formaldehyde absorbent laminate 10 can be provided with moisture resistance and can be used even in a high humidity environment.

The above-mentioned nitrogen-containing compound that absorbs formaldehyde and the compound having a benzene ring that absorbs formaldehyde are not particularly limited as long as they react quantitatively with formaldehyde. It is preferable that the compound absorbs to, is industrially easily available, and is stable in the atmosphere. On the other hand, those that are unstable in the atmosphere and those that are toxic are not suitable for practical use.

Examples of the nitrogen-containing compound used in the present invention include the following compounds. (a) Amino compounds: dicyandiamide, melamine, etc. (b) Amides: urea, barbituric acid, semicarbazide hydrochloride, etc. (c) Amino acids: glutamate (sodium salt, etc.), glycine, alanine, sarcosine, etc. Examples of the compound having a benzene ring used include the following compounds. (d) Phenols: phenol, cresol, xylenol, etc. (e) Alkylbenzene compounds: xylene, toluene, etc. (f) Condensed polycyclic compounds: naphthalene etc. From the viewpoint of the solubility of sucrose and the aesthetic appearance after absorption of formaldehyde, they can be appropriately mixed and used.

The mechanism by which the above nitrogen-containing compound or the compound having a benzene ring absorbs formaldehyde is not clear, but (1) the above compound simply physically adsorbs formaldehyde, (2) the chemical reaction after physical adsorption. Or (3) it is presumed that the compound absorbs a small amount of water contained in the core raw paper 14 or the like, or water in the atmosphere, and formaldehyde reacts with or dissolves in the water.

The reaction form of the above-mentioned nitrogen-containing compound and formaldehyde is the same as the conventionally known form, and an adduct such as a methylol compound or an addition condensate such as a semicarbazone is produced depending on the type of the nitrogen-containing compound used. It is presumed that. On the other hand, the compound having a benzen ring is capable of reacting with formaldehyde to form a thermosetting resin, and the reaction system is the same as the conventionally known system.

As the insect repellent, fungicide and deodorant used in the present invention, various conventionally known agents used for each purpose can be used. The paper or fiber substrate containing the nitrogen-containing compound, the compound having a benzene ring, the insect repellent, the fungicide or the deodorant can be prepared by dissolving the compound in a suitable solvent such as alcohol. Base material 20-200 g / m^TwoTo 3 to 50 g / m ^Two , Preferably 3 to 20 g / m^TwoIt is obtained by impregnating or coating in the range of 10 and heating and drying this.

As a method for impregnating the above compound into a paper or a fiber base material, any method capable of uniformly impregnating the above compound may be used, and various methods such as a spray method, a dipping method and a roller method may be used. You can The temperature during the impregnation treatment is in the range of 30 to 50 ° C in consideration of the strength of the paper or fiber base material to be impregnated, the solubility of the above compounds, the speed of penetration into the paper or fiber base material and the drying efficiency after impregnation. It is preferable to carry out. On the other hand, in order to coat the above compound on a paper or fiber substrate, various conventionally known methods such as a roll coating method can be used.

The formaldehyde absorption laminate 30 shown in FIG. 4 is formed by stacking adjacent unit members 12 so that the corrugations of the core raw paper 14 cross each other (90 ° in FIG. 3). By thus stacking the core raw paper 14 so as to intersect the corrugated direction, the strength of the absorbent laminate 30 can be improved in the stacking direction of the unit members 12.

As the core raw paper 14 and the liner 16 in the formaldehyde absorbing laminate 30, the same ones as those exemplified for the formaldehyde absorbing laminate 10 are used. Further, as the unit member 12, a core raw paper 14 sandwiched between two liners 16 and 18 exemplified in the formaldehyde absorbing laminate 20 may be used. Furthermore, in the formaldehyde absorbing laminate 30 shown in FIG. 4, the unit member may be made of the core raw paper only.

The formaldehyde-absorbing laminates 10, 20, 30 can be used as a filter in, for example, an air cleaner, a ventilator, or another air conditioner. The formaldehyde absorption laminate 40 shown in FIG. 5 is a plate-shaped member formed by laminating a plurality of single-sided corrugated cardboard-shaped unit members 42 each including a core raw paper 44 having a corrugated step and a plate-shaped liner 46. The unit member 42 may be a double-faced corrugated board member formed by sandwiching a core raw paper with two liners.

The unit member 42 of the formaldehyde absorbing laminate 40 is not a flat member like the unit members 12 and 22 shown in FIGS. 1 and 2, but is long in the traveling direction p of the corrugated core paper, It is a short member in the direction (thickness t 1 direction) perpendicular to both the traveling direction p of the waveform and the amplitude direction a. Therefore, the absorbent laminated body 40 formed by laminating a plurality of the unit members 42 is a plate-shaped member having a thickness t.

The core raw paper 44 and the liner 46 are the same members as the core raw paper 14 and the liner 16 described above. The compound contained in such a member, the type of chemicals such as insect repellent, the type of paper or fiber base material, and the manufacturing method are the same as described above. The thickness t of the formaldehyde absorbing laminate 40 may be appropriately set depending on the purpose of use of the absorbing laminate 40, the strength in the thickness t direction, and the like.

The formaldehyde absorbing laminate 40 has an extremely large surface area as compared with the conventional sheet-form formaldehyde absorbing material, and therefore exhibits an excellent formaldehyde absorbing and removing action. Further, since the formaldehyde absorption laminate 40 is formed in a corrugated cardboard shape (or a honeycomb shape), its strength in the thickness t direction is large. Therefore, for example, it can be laid on the surface of a floor material or a wall material and used as a curing sheet, or can be used by being installed inside a chest and used as an intervening paper to be interposed in the middle of plywood.

[0028]

[Effect of the invention]

 As described above in detail, according to the formaldehyde absorption laminate of the present invention, depending on the shape of the absorption laminate, it can be used in various applications such as filters in air conditioners, curing sheets, and interleaving paper for plywood. It can exhibit the absorption and removal action of formaldehyde and the insect repellent, mildew proof or deodorant action at the same time.

[Brief description of the drawings]

FIG. 1 is a perspective view of a formaldehyde absorbing laminate according to an embodiment of the present invention.

FIG. 2 is a perspective view of a formaldehyde absorbing laminate according to another embodiment of the present invention.

3 (a) to 3 (c) are schematic views showing an example of a combination of the unit members in FIGS. 1 and 2. FIG.

FIG. 4 is a perspective view of a formaldehyde absorbing laminate according to still another embodiment of the present invention.

FIG. 5 is a perspective view of a formaldehyde absorbing laminate according to still another embodiment of the present invention.

[Explanation of symbols]

 10 Formaldehyde Absorption Laminate 12 Unit Member 14 Core Base Paper 16 Liner 20 Formaldehyde Absorption Laminate 22 Unit Member 30 Formaldehyde Absorption Laminate 40 Formaldehyde Absorption Laminate 42 Unit Member 44 Core Base Paper 46 Liner

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B32B 3/28 B01D 53/34 116J 27/18

Claims (2)

[Utility model registration claims] 1. A formaldehyde absorption laminate comprising a plurality of unit members each consisting of a corrugated core raw paper and a plate-shaped liner, wherein the core raw paper is a nitrogen-containing compound that absorbs formaldehyde and / or Or a paper or fiber base material containing a compound having a benzene ring that absorbs formaldehyde, and the liner is a paper or fiber base material containing an insect repellent, a fungicide or a deodorant. Formaldehyde absorption laminate. 2. A formaldehyde absorption laminate comprising a plurality of unit members each comprising a corrugated core raw paper and a plate-shaped liner, wherein the core raw paper is (i) a nitrogen-containing nitrogen absorbing formaldehyde. Absorbs compounds and / or formaldehyde,
A formaldehyde absorption laminate comprising a paper or fiber base material containing a compound having a benzene ring and (ii) a paper or fiber base material containing an insect repellent, a fungicide or a deodorant.