JP2005065986A - Functional furniture material, manufacturing method for functional furniture material, and functional furniture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a functional furniture material which sufficiently demonstrates specified functions such as an adsorbing function and a resolving function for formaldehyde and the like, and at the same time, which makes itself thinner. <P>SOLUTION: A board material 1 as this functional furniture material is equipped with a plate-shaped base material 10, and a functional sheet 20 which is bonded and fixed to one side in the thickness direction of the base material 10. The functional sheet 20 includes a pair of felt-like sheet sections which are arranged on both sides in the thickness direction, and a functional material layer which is fixedly held between both sheet sections into a laminar structure, and demonstrates at least a function for adsorbing chemical substances. The functional material for the functional material layer is composed of a silica gel. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a functional furniture material that effectively exhibits various functions such as adsorption / decomposition function of VOC (volatile organic compound) containing formaldehyde, a method for producing the functional furniture material, and functional furniture.

  Currently, sick house syndrome, which adversely affects health, is regarded as a problem. This sick house syndrome means that a person inhales a chemical substance or the like released from a building material or furniture into a room, thereby causing symptoms such as coughing, headache, eye and throat pain and nausea. In recent years, sick house syndrome tends to increase because indoor ventilation is not performed for a long time with the use of an air conditioner in addition to improving the air tightness of houses such as highly airtight houses. Such sick house syndrome has a particularly large adverse effect on people with allergic diseases, infants, elderly people, etc., and effective countermeasures are urgently needed not only in housing but also in places where the impact is particularly problematic, such as schools and medical facilities. It is sought after. On the other hand, formaldehyde as one of VOCs has attracted attention as a chemical substance that causes such sick house syndrome. For this reason, according to the revised Building Standard Law of 2003, the amount of formaldehyde released is greatly limited.

  This formaldehyde is widely used as an adhesive or preservative in building materials such as plywood, wallpaper, furniture and the like. Therefore, as a result of this revision of the Building Standards Law, as for building materials and wallpaper, formaldehyde countermeasures are being taken by using materials that emit less formaldehyde or using adhesives that contain less formaldehyde. Yes.

  On the other hand, for furniture, as with building materials and wallpaper, it is conceivable to take measures against formaldehyde by using materials with low formaldehyde content and divergence. However, even if a material with a low formaldehyde content or divergence is used, a certain amount of formaldehyde is diffused from the material to the indoor environment. Therefore, if furniture that effectively exhibits the function of actively adsorbing and decomposing formaldehyde diffused from the material can be provided, it is most ideal as a measure against sick house syndrome.

As a technique that is applied to furniture and exhibits a function of adsorbing formaldehyde, there is a technique described in Patent Document 1 or Patent Document 2.
JP 2000-127274 A JP 2002-14459 A

  Patent Document 1 discloses a deodorizing board that adsorbs harmful substances such as formaldehyde generated from building panels, furniture panels, and the like, and absorbs surrounding moisture. This deodorizing board is formed by adhering only the contact portions of the granular active materials to form an activated carbon layer having many continuous vents leading to the front and back, and partially adhering a breathable sheet on the front and back of the activated carbon layer. It is. According to Patent Document 1, this deodorizing board is said to adsorb formaldehyde generated from an adhesive of plywood by being placed in a top plate, a side plate, a shelf plate, etc. of furniture having a flash structure.

  Patent Document 2 discloses a plate-like core material provided with a material that adsorbs formaldehyde and the like. This plate-like core material is obtained by attaching a shell powder obtained by pulverizing a shell having a crystal structure with a calcium carbonate calcite structure to a paper honeycomb plate. According to Patent Document 2, a ceiling material, a wall plate, furniture, tatami and the like using this plate-shaped core material adsorb formaldehyde and the like.

However, the technique described in Patent Document 1 is embodied as a deodorizing board and has a considerable thickness as a whole. For example, Patent Document 1 discloses values such as 12 to 14 mm and 25 to 28 mm as the thickness of the deodorizing board depending on the number of activated carbon layers. In addition, Patent Document 1 discloses that a granular activated carbon having a diameter of about 2 to 6 mm is used, so that the thickness of the granular activated carbon layer itself is considerably increased, and the thickness of the deodorizing board is also considerably increased. It must be large. Therefore, the top plate of the furniture that can be embodied using this deodorizing board must be a structure in which the deodorizing board occupies the main part of the whole, the degree of design freedom is limited, and its design ( There are also significant restrictions in terms of design.
Moreover, the technique described in Patent Document 2 is embodied as a plate-shaped core material such as a honeycomb-shaped plate, and has a considerable thickness as a whole. Moreover, in patent document 2, in order to adhere shell powder to a honeycomb-shaped board, and adsorb | suck formaldehyde etc. with the shell powder, it is necessary to ensure the adhesion area of the shell powder in a honeycomb-shaped board large, The thickness is, After all, it must be quite large. Therefore, the furniture that can be embodied using this plate-shaped core material has to have a structure in which the plate-shaped core material occupies the main part of the whole, and the degree of design freedom is limited. There are also significant restrictions in terms of (design).

  Therefore, the present invention sufficiently exhibits predetermined functions such as an adsorption function and a decomposition function of formaldehyde and the like, and can itself be thin-walled. Functional furniture materials and functional furniture that can increase the degree of freedom of design of furniture materials and furniture as a whole and can improve the design (design) An object of the present invention is to provide a method for manufacturing a material and functional furniture.

  The functional furniture material according to claim 1 includes a base material having a plate shape or a column shape, and a functional sheet bonded and fixed to one side in the thickness direction of the base material, and the functional sheet has a thickness thereof. A pair of felt-like sheet portions disposed on both sides in the vertical direction and a functional material layer that is fixedly sandwiched between the two sheet portions so as to form a layer and exhibit at least a chemical substance adsorption function.

  The functional furniture material according to claim 2 is the structure according to claim 1, wherein the functional sheet is formed by heating and pressing a surface of a felt-like sheet material having a predetermined thickness by heat press. A felt-like sheet having a smaller thickness is formed and the surface thereof is smoothed to form at least one of the pair of sheet portions, and the functional sheet is smoothed on the surface. The sheet portion thus formed is joined and fixed to the base material so as to be located on the opposite side of the base material.

  According to a third aspect of the present invention, there is provided the functional furniture material according to the first or second aspect, wherein at least one of the pair of sheet portions of the functional sheet is formed in a felt-like shape having air permeability, and the functional sheet is disposed in the ventilation space. The felt-like sheet portion having the property was bonded and fixed to the base material so as to be located on the side opposite to the base material.

  In the functional furniture material according to a fourth aspect, in the configuration of the first or second aspect, both of the pair of sheet portions of the functional sheet have a felt shape having air permeability.

  The functional furniture material according to claim 5 includes a base material having a plate shape or a column shape, and a functional sheet bonded and fixed to one side in a thickness direction of the base material, and the functional sheet has a thickness thereof. A function of at least a chemical substance adsorbing function that is fixedly sandwiched between two sheets of felt-like sheet portions arranged at intervals in the vertical direction and between the two adjacent sheet portions. A material layer.

  The functional furniture material according to claim 6 is the structure according to claim 5, wherein the functional sheet is formed by heating and pressing the surface of a felt-like sheet material having a predetermined thickness by heat press. It is a sheet-like felt-like sheet with a smaller thickness, and the surface thereof is smoothed to form at least one sheet part of the two sheet parts arranged on both sides in the thickness direction, The functional sheet is bonded to the base material so that the sheet portion whose surface is smoothed is located on the side opposite to the base material.

  The functional furniture material according to claim 7 is, in the configuration of claim 5 or 6, out of two sheet portions arranged on both sides in the thickness direction among the three or more sheet portions of the functional sheet. At least one of them and all the sheet parts arranged in the inside are made into a felt-like felt having air permeability, and the functional sheet is made of the air vent of the two sheet parts arranged on both sides in the thickness direction. The felt-like sheet portion having the property was bonded and fixed to the base material so as to be located on the side opposite to the base material.

  In the functional furniture material according to claim 8, in the configuration of claim 5 or 6, all of the three or more sheet portions of the functional sheet have a felt shape having air permeability.

  The functional furniture material according to claim 9 is the structure according to claim 2 or 6, wherein the functional sheet has a thickness of the sheet portion that is reduced in thickness by the heat seal, and is about 0.2 mm to 0.5 mm. The functional material layer has a thickness in the range of about 1 mm to 1.5 mm.

  The functional furniture material according to claim 10 is the structure according to any one of claims 2, 6 and 9, wherein the functional sheet is a low melting point fiber having a thickness of about 4 to 8 denier and a thickness of about 4 to 8. A mixed fiber raw material mixed with non-low-melting fibers of denier is formed into a felt shape by a needle punch method to form the felt-shaped sheet material, and the surface of the felt-shaped sheet material is heated and pressed by a heat press. Thus, a sheet portion having a smooth surface is formed.

  The functional furniture material according to claim 11 is the structure according to any one of claims 2, 6 and 9, wherein the functional sheet is a low melting point fiber having a thickness of about 4 to 8 denier and a thickness of about 4 to 8. The felt-like sheet material is formed by forming a mixed fiber raw material mixed with non-low-melting fiber of denier at a ratio of about 2 to 8 into a felt shape by a needle punch method, and the surface of the felt-like sheet material is heated. A sheet portion having a smooth surface is formed by heat and pressure molding using a press.

  The functional furniture material according to claim 12 is the structure according to claim 10 or 11, wherein the functional material layer of the functional sheet is filled with silica gel in layers between the sheet portions, The silica gel is fixedly sandwiched between the two sheet portions by the fibers entangled between the two sheet portions by entanglement and bonding of the fibers by a mechanical action.

  The functional furniture material according to a thirteenth aspect is the structure according to any one of the second, sixth, ninth, eleventh and twelfth aspects, wherein the base material is a square-shaped core material and both sides in the thickness direction of the core material. A flat plate having a flash structure having a front plate and a back plate each bonded and fixed to each other, and further having a predetermined thickness that is bonded and fixed so as to cover the outer peripheral edge of the outer surface of the back plate of the base material The entire outer peripheral end surface of the substrate so as to cover all the outer peripheral end surface of the core member, the outer peripheral end surface of the front surface plate member, the outer peripheral end surface of the rear plate member, and the outer peripheral end surface of the edge plate member. The functional sheet is formed to have substantially the same thickness as that of the edge plate, and is formed by the inner peripheral end surface of the edge plate. It is a sheet shape having the same outer shape as the shape to be formed, and its outer peripheral end surface In a state of being in close contact with the inner peripheral surface of the edge plate material for which is fixedly joined to the rear surface plate, it is joined and fixed to the outer surface of the back plate material for.

  The method for producing a functional furniture material according to claim 14 includes a web forming step of forming a sheet-shaped web from predetermined fibers, and a felt-shaped sheet material having a predetermined thickness is formed by bonding the fibers of the web. The felt-like sheet material forming step and the pair of felt-like sheet materials are arranged opposite to each other, and a functional material that exhibits at least a chemical substance adsorption function is fixedly sandwiched between the two felt-like sheet materials. A preliminary sheet forming step for forming a sheet, and at least one of the felt-like sheet materials of the preliminary sheet is heat-pressed by heat press to form a felt-like sheet portion having a thickness smaller than the predetermined thickness. And a functional sheet forming step for forming the functional sheet, and a bonding and fixing step for bonding and fixing the functional sheet to a plate-like base material.

  The method for producing a functional furniture material according to claim 15 includes a web forming step of forming a sheet-like web from predetermined fibers, and a felt-like sheet material having a predetermined thickness is formed by joining the fibers of the web. A felt-shaped sheet material forming step, a sheet-portion forming step of forming the felt-shaped sheet material by heat-pressing with a heat press to form a felt-shaped sheet portion having a thickness smaller than the predetermined thickness, and the sheet portion And the felt-like sheet material and one of the sheet portions, and a functional material that exhibits at least a function of adsorbing a chemical substance is fixedly sandwiched between the functional sheet and the functional sheet. A functional sheet forming step of forming the functional sheet, and a bonding step of bonding and fixing the functional sheet to a plate-like base material.

  The method for producing a functional furniture material according to claim 16 is the structure according to claim 13 or 14, wherein the functional sheet has a thickness of the sheet portion that is reduced in thickness by the heat sealing. The thickness of the functional material layer is about 1 mm to 1.5 mm.

  The method for producing a functional furniture material according to claim 17 is the structure according to any one of claims 13 to 15, wherein the felt-like sheet material forming step includes a low melting point fiber having a thickness of about 4 to 8 denier and a thickness. A mixed fiber raw material mixed with non-low melting point fibers of about 4 to 8 denier is formed into a felt shape by a needle punch method to form the felt sheet material.

  The method for producing a functional furniture material according to claim 18 is the method according to any one of claims 13 to 15, wherein the felt-like sheet material forming step includes a low melting point fiber having a thickness of about 4 to 8 denier and a thickness. The felt-like sheet material is formed by forming a mixed fiber raw material in which about 4 to 8 denier non-low melting point fibers are mixed at a ratio of about 2 to 8 into a felt shape by a needle punch method.

  The functional furniture material according to a nineteenth aspect is the structure according to any one of the thirteenth to sixteenth aspects, wherein the heat press is performed under conditions of a heating temperature of about 100 to 110 ° C and a heating and pressing time of about 1 minute.

  The functional furniture according to claim 20 uses the functional furniture material according to any one of claims 1 to 13 as a component.

  The functional furniture material according to claim 1 sufficiently exhibits predetermined functions such as an adsorption function of formaldehyde and the like, a decomposition function, and the like, and can be made thin, and furniture materials such as a plate-like material and a board Even when applied to furniture including the furniture material, the degree of freedom in designing the furniture material or the entire furniture can be increased, and the design (designability) can be improved.

  In addition to the effect of the first aspect, the functional furniture material according to the second aspect can improve the appearance because the smooth surface of the heat-sealed sheet portion is disposed at least on the exposed surface side. Moreover, since the thickness of the seal portion can be reduced by heat sealing, the degree of freedom in designing the furniture material and the entire furniture can be further increased.

  In addition to the effect of claim 1 or 2, the functional furniture material according to claim 3 has a breathable sheet portion disposed at least on the exposed surface side, so that formaldehyde and the like in the indoor air can be vented. It is possible to efficiently guide a large amount from a sheet portion having a property to a functional material layer, and to fully exhibit a predetermined function such as an adsorption function and a decomposition function of formaldehyde and the like.

  In addition to the effect of claim 1 or 2, the functional furniture material according to claim 4 has a breathable sheet portion disposed on the exposed surface side and the inner surface side thereof, so that formaldehyde in the indoor air, It is possible to efficiently guide a large amount from one breathable sheet part to the functional material layer, and formaldehyde etc. emitted from the inside of the functional furniture material is functional from the other breathable sheet part. A large amount can be efficiently led to the material layer. As a result, predetermined functions such as an adsorption function and a decomposition function of formaldehyde and the like can be more fully exhibited.

  The functional furniture material according to the fifth aspect exhibits the same effect as the functional furniture according to the first aspect. Furthermore, since the functional material according to the fifth aspect includes a plurality of functional material layers, the functional furniture layer can more fully exhibit predetermined functions such as an adsorption function and a decomposition function of formaldehyde and the like.

  In addition to the effect of the fifth aspect, the functional furniture material according to the sixth aspect can improve the appearance because the smooth surface of the heat-sealed sheet portion is disposed at least on the exposed surface side. Moreover, since the thickness of the seal portion can be reduced by heat sealing, the degree of freedom in designing the furniture material and the entire furniture can be further increased.

  In addition to the effect of claim 5 or 6, the functional furniture material according to claim 7 has a breathable sheet portion disposed at least on its exposed surface side, so that formaldehyde or the like in room air can be vented. It is possible to efficiently guide a large amount from a sheet portion having a property to a functional material layer, and to fully exhibit a predetermined function such as an adsorption function and a decomposition function of formaldehyde and the like.

  In addition to the effect of claim 5 or 6, the functional furniture material according to claim 8 has a breathable sheet portion disposed on the exposed surface side and the inner surface side, so formaldehyde in the indoor air, It is possible to efficiently guide a large amount from one breathable sheet part to the functional material layer, and formaldehyde etc. emitted from the inside of the functional furniture material is functional from the other breathable sheet part. A large amount can be efficiently led to the material layer. As a result, predetermined functions such as an adsorption function and a decomposition function of formaldehyde and the like can be more fully exhibited.

  In addition to the effect of claim 2 or 6, the functional furniture material according to claim 9 has a thickness of the functional sheet that is within the thickness of the plywood for furniture that is normally used. Even when it is bonded and fixed to the base material so that the end faces come into contact with each other, the appearance can be improved.

  In addition to the effect of any one of the second, sixth and ninth aspects, the functional furniture material according to the tenth aspect has a high quality surface of the seal portion smoothed by heat press.

  In addition to the effect of any one of claims 2, 6 and 9, the functional furniture material according to claim 11 has a higher quality surface of the seal portion smoothed by heat press.

  In addition to the effect of claim 10 or 11, the functional furniture material according to claim 12 stably collects a large amount of formaldehyde by the chemical adsorption function of silica gel as a functional material, It can be adsorbed for a long time and can promote the decomposition of formaldehyde. Moreover, since formaldehyde is easily decomposed inside the silica gel by the action of light or the like, it is possible to effectively prevent formaldehyde from being re-released from the functional furniture material.

  The functional furniture material according to claim 13 has the functional sheet bonded and fixed to the back plate, and disposed inside the edge plate, so that the functional sheet is disposed at a position where the functional sheet is difficult to touch during use. Can improve the appearance.

  The method for producing a functional furniture material according to claim 14 can sufficiently exhibit predetermined functions such as an adsorption function of formaldehyde and the like, a decomposition function, etc., and can itself be made thin, such as a plate-like material and a board. Even when the present invention is applied to the furniture material and the furniture including the furniture material, the degree of freedom in designing the furniture material and the whole furniture can be increased, and the design (designability) can be improved.

  The method for producing a functional furniture material according to claim 15 can sufficiently exhibit predetermined functions such as an adsorption function of formaldehyde and the like, a decomposition function, and the like, and can be made thin, such as a plate-like material, a board, etc. Even when the present invention is applied to the furniture material and the furniture including the furniture material, the degree of freedom in designing the furniture material and the whole furniture can be increased, and the design (designability) can be improved.

  In addition to the effect of claim 13 or 14, the method for producing a functional furniture material according to claim 16 has a functional sheet thickness within the thickness of a plywood for furniture that is normally used. Even when the sheet is bonded and fixed to the base material so that the plywood and the end face are in contact with each other, the appearance can be improved.

  In addition to the effect of any one of claims 13 to 15, the method for producing a functional furniture material according to claim 17 can more easily and reliably smooth the surface of the seal portion by a heat press process.

  In addition to the effect of any of claims 13 to 16, the functional furniture material according to claim 18 can more easily and reliably smooth the surface of the seal portion by a heat press process.

  In addition to the effect of any of claims 13 to 15, the functional furniture material according to claim 19 can more easily and reliably smooth the surface of the seal portion by a heat press process.

  The functional furniture according to a twentieth aspect is a functional furniture exhibiting the effect of any one of the first to thirteenth aspects.

  The best mode for carrying out the present invention (hereinafter referred to as an embodiment) will be described below. Throughout each embodiment, the same members, elements, or parts are denoted by the same reference numerals, and the description thereof is omitted.

Embodiment 1
FIG. 1 is an end view showing a functional furniture material according to Embodiment 1 of the present invention with one outer peripheral end face thereof opened. First, according to FIG. 1, the whole structure of the functional furniture material which concerns on Embodiment 1 is demonstrated.

  As shown in FIG. 1, the functional furniture material according to Embodiment 1 is embodied as a board material 1 that can be used as a shelf board or the like as a component of furniture. This board material 1 includes a base plate 10 having a rectangular plate shape or a rectangular board shape, and a functional sheet 20 bonded and fixed to one side in the thickness direction of the base plate 10. A rectangular board shape corresponding to Specifically, the base material 10 includes a core material 11 having a square shape, a front surface plate material 12 and a back surface plate material 13 (plywood, veneer, It forms a rectangular flat plate shape or a rectangular board shape of a flash structure having a peeling plate. The core material 11 is disposed at least at both ends in the width direction or at both length ends of the base material 10, but the core material 11 can be additionally disposed at other positions (for example, the center or the like). The front plate 12 and the back plate 13 each have a rectangular flat plate shape that is the same as the planar shape of the substrate 10. In addition, as said board | plate material 12 for surfaces, arbitrary board | plate materials, such as decorative plywood, such as a melamine plywood, a veneer, a peeling board, a plywood, can be used. However, when the board material 10 is used as a shelf board, the surface board material 12 is disposed at a position that is visually recognized as the upper surface of the shelf board, so that the surface board material 12 includes a decorative plywood board, a veneer board, a peeling board, etc. It is preferable to use a plate material whose surface is finished. On the other hand, as the back plate 13, the same plate as the front plate 12 can be used. However, when the board material 10 is used as a shelf board, the back board material 13 is disposed at a position that is not normally visually recognized as the bottom surface of the shelf board. It is preferable to use an inexpensive plate material.

  The board material 1 is further bonded and fixed to the outer surface of the back plate 13 by bonding or the like to the outer plate of the back plate 13 so as to cover the outer peripheral edge of the outer surface of the back plate 13 of the substrate 10. doing. The edge plate member 14 has a rectangular ring-shaped flat plate shape corresponding to the shape of the outer peripheral edge portion of the back plate member 13. In addition, as the board | plate material 14 for edge parts, one board | plate material may be formed and used for a rectangular ring shape, and it is good also as a rectangular ring shape combining several board | plate materials. Further, as the edge plate 14, the same plate as the surface plate 12 can be used. However, when the board material 10 is used as a shelf board, the edge board material 14 is arranged at a position that is not normally recognized as the lower surface of the shelf board, similarly to the back board material 13. It is preferable to use an inexpensive plate material such as plywood that does not have a finishing process on the surface. The board material 1 further includes an edge processing plate material 15 so as to cover all of the outer peripheral end surface of the core material 11, the outer peripheral end surface of the front plate member 12, the outer peripheral end surface of the back plate member 13, and the outer peripheral end surface of the edge plate member 14. Are bonded and fixed to the entire outer peripheral end surface of the substrate 10 by adhesion or the like. As the edge processing plate 15, the same plate as the surface plate 12 can be used. However, when the board material 10 is used as a shelf board, the edge processing board material 15 is disposed at a position visually recognized as a side surface or an end surface of the shelf board. It is preferable to use a plate material whose surface is finished, such as a plate or a peeled plate.

  The functional sheet 20 is formed in a sheet shape having substantially the same thickness as the thickness of the edge plate 14. The functional sheet 20 is formed in a rectangular sheet shape having the same shape as the shape (rectangular shape) formed by the inner peripheral end surface of the edge plate 14. The functional sheet 20 is bonded to the outer surface of the back plate 13 by adhesion or the like in a state where the outer peripheral end surface is closely contacted with the inner peripheral end surface of the edge plate 14 bonded and fixed to the back plate 13. It is fixed.

  Next, the functional sheet of the functional furniture material according to Embodiment 1 will be described in detail. FIG. 2 is a perspective view schematically showing a functional sheet of the functional furniture material according to Embodiment 1 of the present invention.

  As shown in FIG. 2, the functional sheet 20 includes a pair of felt-like sheet portions 21 arranged on both sides in the thickness direction, and is fixedly sandwiched between the sheet portions 21 so as to form a layer, and is at least chemically And a functional material layer 25 that exhibits a substance adsorption function. Here, the felt-shaped sheet portion 21 of the functional sheet 20 can be formed of, for example, a nonwoven fabric such as a needle punch felt. In the first embodiment, the functional sheet 20 is formed into a felt-like sheet having a thickness smaller than the predetermined thickness by heat-pressing the surface of the felt-like sheet material having a predetermined thickness by heat press. At the same time, the surface is smoothed to form each of the pair of sheet portions 21. However, the functional sheet 20 has a thickness of felt smaller than the predetermined thickness by subjecting only one of the pair of sheet portions 21 to heat press molding the surface of the felt-like sheet material having a predetermined thickness by heat press. It is also possible to form a sheet-like sheet and smooth the surface. Alternatively, the functional sheet 20 can be embodied without performing surface smoothing by heat press on both of the pair of sheet portions 21. In addition, when only the sheet portion 21 of at least one of the pair of sheet portions 21 is heated and pressed by heat press to smooth the surface, the sheet portion 21 with the smoothed surface is opposite to the substrate 10. The functional sheet 20 is preferably bonded and fixed to the back plate 13 of the substrate 10 so as to be positioned on the side. That is, in this case, the other sheet portion 21 whose surface is not smoothed is bonded and fixed to the back plate 13 of the base material 10, and the one sheet portion 21 whose surface is smoothed is exposed on the back surface side of the base material 10. It is preferable to do so. If it carries out like this, the effect of improving the designability etc. can be exhibited also in the back surface side of the board | substrate material 1 by the sheet | seat part 21 which smooth | blunted the surface.

  Moreover, in Embodiment 1, both the pair of sheet | seat parts 21 of the functional sheet 20 are made into the felt shape which has air permeability. However, in the functional sheet 20, only one of the pair of sheet portions 21 can be formed into a felt shape having air permeability. Alternatively, the functional sheet 20 can make both sheet portions non-breathable. Here, in the functional sheet 20, when at least one of the pair of sheet portions 21 is made into a felt-like felt shape, the felt-like sheet portion 21 having the breathability is positioned on the side opposite to the base material 10. It is preferable to bond and fix to the base material 10. That is, in this case, the other sheet part 21 that does not have air permeability is bonded and fixed to the back plate 13 of the base material 10, and the one sheet part 21 having air permeability is exposed on the back surface side of the base material 10. It is preferable to do so. In this way, the air-permeable sheet portion 21 is disposed so as to be exposed on the back surface side of the board material 1, and a chemical substance such as formaldehyde or moisture in the indoor air is allowed to pass therethrough, so that the functional material layer 25 of the functional sheet 20. Will lead to. That is, chemical substances such as formaldehyde and moisture in the indoor air can be introduced into the interior from the entire area of the sheet portion 21 of the functional sheet 20, and can be adsorbed and decomposed with high efficiency by the functional material layer 25. On the other hand, in the case where only one sheet portion 21 is made to be air permeable, when the air permeable sheet portion 21 is joined and fixed to the back plate 13 of the base material 10, the chemical substances in the indoor air are functional sheets. 20 enters the inside from the boundary between the edge plate member 14 and enters the inside of the functional material layer 25 from the outer peripheral end surface portion of the functional sheet 20. Therefore, the efficiency is lower than in the above case in terms of the effect of adsorption of chemical substances in the room air. However, also in this case, chemical substances such as formaldehyde generated from the base material 10 permeate smoothly into the functional material layer 25 from the air-permeable sheet portion 21 joined to the back side member 13, and the functional material. Adsorption and decomposition effects by the layer 25 can be sufficiently expected. When both the sheet portions 21 are air-impermeable, the adsorption of the chemical substances generated from the base material 10 itself is the same as the adsorption of the chemical substances in the indoor air. This is done via the boundary with the plate 14. Therefore, it is not so preferable in terms of the adsorption effect of chemical substances. From the above points, it is more preferable that both the sheet portions 21 of the functional sheet 20 have a felt shape having air permeability.

  In the functional sheet 20, the thickness of the sheet portion 21 that is reduced in thickness by the heat sealing is in the range of about 0.2 mm to 0.5 mm, and the thickness of the functional material layer 25 is about 1 mm to 1. It is preferable to form in a range of 5 mm. If it carries out like this, the thickness of the functional sheet 20 whole will be in the range of about 1.4 mm-2.5 mm, and will be settled in about 2.5 mm which is the thickness of the plywood used as a plywood for normal furniture materials. Therefore, when the functional sheet 20 is bonded and fixed to the back plate 13 so as to be in close contact with the edge plate 14 of the substrate 10, the thickness of the functional sheet 20 substantially matches the thickness of the edge plate 14. Or it will be smaller. Thereby, the outer surface of the functional sheet 20 does not appear to protrude from the outer surface of the edge plate 14, and the appearance can be improved. Further, the functional sheet 20 has both the seal portions 21 reduced in thickness by the heat seal, so that the thickness of both the sheet portions 21 is about 0.5 mm, and the thickness of the functional material layer 25 is about 1 mm. It is preferable to form such that If it carries out like this, the thickness of the functional sheet 20 whole will be about 2 mm, and will become a little smaller than 2.5 mm which is the thickness of the normal plywood for furniture materials. Therefore, when the functional sheet 20 is bonded and fixed to the back plate 13 so as to be in close contact with the edge plate 14 of the substrate 10, the thickness of the functional sheet 20 substantially matches the thickness of the edge plate 14. Will do. Thereby, the outer side surface of the functional sheet 20 becomes substantially flush with the outer side surface of the edge plate member 14, and the appearance can be further improved.

  Furthermore, the functional sheet 20 is a needle punching method using, for example, a mixed fiber raw material in which a low melting point fiber (yarn) having a thickness of about 4 to 8 denier and a non-low melting point fiber having a thickness of about 4 to 8 denier are mixed. The felt-like sheet material can be formed by forming the felt-like sheet material, and the surface of the felt-like sheet material can be heated and pressed by a heat press to form the sheet portion 21 having the smoothed surface. . If it carries out like this, the surface of the sheet | seat part 21 can be smoothed easily and reliably by heat sealing. At this time, it is more preferable to use a mixed fiber material in which a low melting point fiber (yarn) having a thickness of about 6 denier and a non-low melting point fiber having a thickness of about 6 denier are mixed as a raw material for the seal portion 21. . If it carries out like this, the surface of the sheet | seat part 21 can be smoothed more easily and reliably by heat sealing. In this case, the mixing ratio of the low melting point fiber and the non-low melting point fiber is preferably about 2 to 8 (20% for the low melting point fiber and 80% for the non-low melting point fiber). If it carries out like this, the surface of the sheet | seat part 21 can be smoothed more easily and reliably by heat sealing. As the low-melting fiber and non-low-melting fiber, polyester fiber can be representatively used. In addition, acrylic fiber, rayon fiber, olefin fiber, PET (polyethylene terephthalate) fiber, PP (polypropylene). Any fiber that can be used as a fiber for forming a nonwoven fabric, such as a fiber, can be used.

  Next, the sheet portion of the functional sheet of the functional furniture material according to Embodiment 1 will be described in more detail. FIG. 3 is a cross-sectional view schematically showing a process of reducing the thickness of the functional sheet of the functional furniture material according to Embodiment 1 of the present invention by heat sealing, and (a) is a state before the thickness is reduced. (B) shows the state after the thickness is reduced.

  As shown in FIG. 3, the functional material layer 25 of the functional sheet 20 is filled with a layer of silica gel 25a between the sheet portions 21, and the fibers 21a of both sheet portions 21 are entangled by mechanical action by needle punching. The silica gel 25 a is fixedly sandwiched between the two sheet parts 21 by the entangled fibers 22 that couple the two sheet parts 21 together. Specifically, the silica gel 25a contains 99.5% or more of silicon dioxide (SiO2), and has a spherical shape with a particle size of 3 μm, 5 μm, or 10 μm, for example. In addition, silica gel 25a gathers silicon dioxide fine particles to continuously form fine mesh pores, and exhibits various functions such as moisture absorption effect, moisture absorption / release effect (humidity adjustment effect), gas adsorption effect, etc. It is a functional material that adsorbs various chemical substances such as water vapor (gas water molecule) and formaldehyde inside the pores. As the silica gel 25a, it is preferable to use those having an average pore diameter of 24 to 120 mm, a pore volume of 0.4 to 1.0 ml / g, and a specific surface area of 350 to 700 m <2> / g in view of the adsorption effect and the like.

  Here, the silica gel 25a exposes a number of hydroxyl groups (—OH groups) or silanol groups (SiOH) on the surfaces in the pores, and gas hydroxyl molecules (H 2 O), formaldehyde (HCHO), etc. are exposed by the hydroxyl groups or silanol groups. And hydrogen bonds and van der Waals forces to efficiently collect water molecules and formaldehyde. That is, the silica gel 25a can stably and continuously adsorb a large amount of gaseous water molecules, formaldehyde, and the like by a hydrogen bond as a chemical reaction or a bond by van der Waals force. This mechanism is called chemical adsorption (adsorption by silanol groups (SiOH)) or surface adsorption. The silica gel 25a collects and adsorbs water molecules and the like by capillary action due to the pores. Such a mechanism is called physical adsorption or adsorption by capillary condensation (capillary phenomenon). Here, the silica gel 25a is classified into A type and B type defined in JIS (Japanese Industrial Standard). The A type mainly exhibits the above-described chemical adsorption action and does not easily release the water molecules once captured. On the other hand, the B type mainly exhibits a physical adsorption action, and effectively exhibits a moisture absorption / release effect (respiration action). Therefore, as the silica gel 25a of the functional material layer 25, it is preferable to use the A type and the B type alone or appropriately mix and use depending on the conditions such as the use and the installation location.

  As described above, in the functional sheet 20 according to the first embodiment, the silica gel 25a is uniformly dispersed over the entire area between the two sheet portions 21 to form the layered functional material layer 25, and the layered silica gel 25a is used as both the sheet portions. The functional material layer 25 is fixedly sandwiched between the two sheet parts 21 by stitching the two sheet parts 21 together by the needle punch method while being sandwiched between the two sheet parts 21. However, as the functional material layer 25, in addition to the silica gel 25a, any material that exhibits an adsorption function, for example, a powdered carbonized material such as activated carbon or high-temperature calcined charcoal can be used. Further, as a method of fixedly sandwiching the functional material layer 25 between the sheet portions 21, the functional material layer 25 is formed by adhering the functional materials to each other with an adhesive, in addition to the needle punch method. In addition, the functional material layer 25 is bonded to the sheet portion 21 or the functional materials are bonded to each other by an adhesive force at the time of heating of the low melting point fiber included in the sheet portion 21 to form the functional material layer 25. The functional material layer 25 can be bonded to the sheet portion 21.

  Here, in Embodiment 1, the surface of the felt-like sheet material is heated and pressed by heat sealing to smooth the surface, thereby forming each of the pair of sheet portions 21. That is, the functional sheet 20 has the functional material layer 25 fixedly sandwiched between a pair of felt-like sheet materials 21A as shown in FIG. 3A before the heat sealing process. It has the structure. At this time, from the surface of each felt-shaped sheet material 21A, a large number of fibers constituting the felt-shaped sheet material 21A are exposed to the outside to become exposed fibers 21a, and each felt-shaped sheet material 21A The fiber 21a has a felt or fluffy surface. It is to be noted that a felt-like sheet material is obtained by using a web-like fiber for forming the sheet portion 21 as described above, and entangled the web by a needle punch method to form a felt-like sheet. 21A can be formed. And in Embodiment 1, as shown in FIG.3 (b), the surface of the felt-shaped sheet material 21A is heat-pressed on the surface of the felt-shaped sheet material 21A of the functional sheet 20 on both sides in the thickness direction. The exposed fibers 21a are thermocompression-bonded and condensed by the adhesive force of the low melting point fibers contained therein. Thereby, the felt-shaped sheet material 21 </ b> A is reduced in thickness and becomes the sheet portion 21. Each sheet portion 21 has a smoothed surface.

  Next, a method for manufacturing a functional sheet of functional furniture according to Embodiment 1 of the present invention will be described from the upstream to the downstream of the manufacturing process. FIG. 4 is a process diagram schematically showing a method for manufacturing a functional sheet for functional furniture materials according to Embodiment 1 of the present invention.

  First, in the method for manufacturing a functional furniture material according to the first embodiment, a sheet-like web is formed from predetermined fibers in the web forming step. Next, in a felt-like sheet material forming step, the fibers of the web are joined to form a felt-like sheet material 21A having a predetermined thickness. Next, in the preliminary sheet forming step, the pair of felt-like sheet materials 21A are arranged to face each other, and the silica gel 25a is used as a functional material that exhibits at least a chemical substance adsorption function between the two felt-like sheet materials 21A. A preliminary sheet is formed by pinching in a fixed manner. Next, in the functional sheet forming step, both the felt-like sheet materials 21A of the preliminary sheet are heat-pressed by heat press to form a felt-like sheet portion 21 having a thickness smaller than the predetermined thickness. Then, the functional sheet 20 is formed. Finally, in the joining and fixing step, the functional sheet 20 is joined and fixed to the base material 10 having a plate shape.

  Here, the manufacturing method of the functional sheet of the functional furniture material according to the first embodiment will be described more specifically. First, a predetermined raw cotton is weighed and opened, mixed, and then the mixed cotton fiber F1 is measured. Then, the fiber is opened by the metallic wire 101. Next, in the wrap forming step as the web forming step, a wrap F2 (a web in which fibers are not bonded) is formed from the spread fibers F1. Next, in the preliminary punching step, the wrap F2 is preliminary punched by the preliminary punch device 102 for performing needle punching, and the fibers in the wrap F2 are preliminarily bonded. Next, in a felt punching process, a felt punch apparatus 103 for forming a needle punch felt is used to needle punch the processing lap F3 preliminarily bonded with the fibers into a felt shape, thereby forming a belt-like (continuous sheet) felt. A sheet material F4 is formed. The felt-like sheet material forming step is constituted by the preliminary punching step and the felt punching step. Note that the felt-shaped sheet material 21A is obtained by cutting the felt-shaped sheet material F4 into a predetermined dimension. This felt-like sheet material F4 is continuously wound around the roll 104 in the winding step.

  Next, a pair of upper and lower rolls 104 around which the felt-like sheet material F4 is wound are prepared, and the felt-like sheet material F4 is supplied from these rolls 104 so as to face each other in the sheet supply step. At the same time, in the functional material supply step, silica gel 25a is uniformly sprayed and supplied between the felt-like sheet materials F4 from the hopper 105 constituting the functional material supply device disposed between the rolls 104, The felt sheet material F4 is filled so as to form a layer having a uniform thickness. Next, in the needle punching process, both felt-like sheet materials F4 are needle punched by the felt needle of the needle punch device 106, and the fibers of both felt-like sheet materials F4 are entangled and bonded by mechanical action. The felt-like sheet material F4 is bonded to each other, and the silica gel 25a is fixedly sandwiched between the felt-like sheet materials F4 by the entangled fibers to form a belt-like (continuous sheet-like) functional sheet material 20A. To do. The preliminary sheet forming step is constituted by the sheet supplying step, the functional material supplying step, and the needle punching step. In addition, what cut | disconnected this functional sheet material 20A to the predetermined dimension turns into the functional sheet 20 of the state which fixedly clamped the functional sheet material between the felt-like sheet materials 21A shown to Fig.3 (a). This functional sheet material 20A is continuously wound around the roll 107 in the winding step. The functional sheet material 20A thus formed may be subjected to preliminary drying and main drying.

  Furthermore, in the functional sheet manufacturing method according to Embodiment 1, the functional sheet material 20A heat-press-molds the surfaces of the pair of felt-like sheet materials F4 by heat press in the heat sealing step. That is, both sides in the thickness direction of the functional sheet material 20A are heat-pressed using a heat press apparatus used for manufacturing a plywood for building materials. As a result, the thickness of the felt-like sheet material F4 on both sides in the thickness direction of the functional sheet material 20A is reduced and the surface is smoothed. Then, the functional sheet 20 is formed by cutting the functional sheet material 20A after the heat pressing into a predetermined dimension in order to join the base material 10 in the cutting step. The functional sheet forming step is constituted by the heat sealing step and the cutting step. The order of the heat sealing process and the cutting process may be reversed. That is, first, in the cutting step, the functional sheet material 20A is cut into a predetermined size to obtain the functional sheet 20 shown in FIG. 3A, and then both sides of the functional sheet 20 are formed in the heat sealing step. It can also be heat pressed. Here, it is preferable that the said heat press process implements heat press on the conditions for heating temperature about 100-110 degreeC, and heating pressurization time for about 1 minute. If it carries out like this, the surface of the sheet | seat part 21 of the functional sheet 20 can be smoothed efficiently. In addition, the other conditions in the method for producing the functional sheet according to Embodiment 1 (type of fiber used, thickness, blending ratio, etc.) can be the same as described in the configuration of the functional furniture material. .

Next, the operation and effect of the functional furniture material according to the first embodiment configured as described above will be described.
First, the board material 1 as the functional furniture material according to the first embodiment can be used as a top plate, a bottom plate, a side plate, a back plate, a shelf plate, a door material or the like of a locker or a storage shelf. In addition, when using the board material 1 as a top plate, a bottom plate, or a shelf board, it is preferable in terms of appearance that the board material 1 is disposed so that the functional sheet 20 faces the lower surface. In particular, the board material 1 used in this manner adsorbs a large amount of formaldehyde and the like diffused from the components of furniture in a stable and continuous manner by the functional back sheet 20. At this time, the functional material layer 25 of the functional sheet 20 stably collects a large amount of formaldehyde and adsorbs it therein for a long time due to the chemical adsorption function or the like of the silica gel 25a as the functional material. be able to. Here, formaldehyde is stably collected and adsorbed on the functional material layer 25 for a long time, so that it is easily decomposed by reaction with photolysis or hydroxyl radical, and becomes water and carbon dioxide gas which is harmless to health. . Therefore, in Embodiment 1, the decomposition of formaldehyde can be promoted by the silica gel 25a constituting the functional material layer 25. Moreover, since formaldehyde is easily decomposed inside the silica gel 25a by an action such as photolysis, it is possible to effectively prevent formaldehyde from being re-released from the board material 1 as a functional furniture material. As described above, the functional furniture material according to Embodiment 1 sufficiently exhibits predetermined functions such as an adsorption function such as formaldehyde, a decomposition function, etc., and can itself be made thin, Even when applied to furniture materials such as boards, or furniture that includes such furniture materials, it is possible to increase the degree of freedom of design of furniture materials and furniture as a whole, and to improve the design (design) it can.

  In the first embodiment, the functional sheet 20 is configured by sandwiching one functional material layer 25 between the pair of sheet portions 21. The functional sheet 20 is composed of a plurality of functional material layers. It can also be embodied to have 25. For example, the functional sheet 20 is fixedly sandwiched so as to form a layer between two or more felt-like sheet portions 21 arranged at intervals in the thickness direction and the two adjacent sheet portions 21. And a functional material layer 25 that exhibits at least a chemical substance adsorption function. In this case, the functional sheet 20 is formed into a felt-like sheet having a thickness smaller than the predetermined thickness by heat-pressing the surface of the felt-like sheet material 21A having a predetermined thickness by heat press. The surface can be smoothed to form at least one of the two sheet portions 21 arranged on both sides in the thickness direction. In this case, it is preferable that the functional sheet 20 is bonded to the base material 10 so that the sheet portion 21 whose surface has been smoothed is located on the side opposite to the base material 10. In addition, among the three or more sheet portions 21 of the functional sheet 20, at least one of the two sheet portions 21 disposed on both sides in the thickness direction and all the sheet portions 21 disposed therein. The felt-like sheet portion 21 having the air permeability among the two sheet portions 21 arranged on both sides in the thickness direction is the base material 10. It is preferable to bond and fix to the base material 10 so that it may be located on the opposite side. Furthermore, it is more preferable that all of the three or more sheet portions 21 of the functional sheet 20 have a felt shape having air permeability.

  Moreover, in the manufacturing method of the functional furniture material which concerns on Embodiment 1, the silica gel 25a is fixedly clamped between the felt-like sheet materials F4 to form the functional sheet material 20A, and then the felt-like sheet material F4 is used. Although it is heat-pressed, first, the felt-like sheet material F4 can be heat-pressed, and the functional sheet material can be formed by sandwiching the silica gel 25a between the felt-like sheet materials after the heat-pressing. In this case, first, a sheet-like web is formed from predetermined fibers in the web forming step. Next, in the felt-like sheet material forming step, the fibers of the web are joined to form a felt-like sheet material having a predetermined thickness. Next, in the sheet portion forming step, the felt-like sheet material is heated and pressed by a heat press to form a felt-like sheet portion having a thickness smaller than the predetermined thickness. Next, in the functional sheet forming step, the sheet portion and any one of the felt-like sheet material and the sheet portion are arranged to face each other, and at least a chemical substance adsorption function is exhibited therebetween. The functional material is fixedly sandwiched to form a functional sheet. In the joining step, the functional sheet is joined and fixed to a plate-like base material.

  About the functional furniture material which concerns on Embodiment 1 comprised as mentioned above, the formaldehyde emission concentration measurement test was done. The results will be described below as Example 1 and Example 2.

  In Example 1, two types of polyflash storage boxes were prepared as furniture for the test specimen. In any case, the dimensions were an outer dimension 450 (W) × 400 (D) × 450 (h), and an inner dimension 410 (W) × 360 (D) × 403 (h) (unit: mm). The storage box according to the present invention as the first type storage box uses the same board material as the board material 1 as the functional furniture material according to the first embodiment as the top plate and the bottom plate. In this storage box, the functional sheet 20 is arranged on the back surface (lower surface) of the top plate and the bottom plate, respectively. In addition, the shelf board and the side board were comprised with the conventional board material which is not equipped with the functional sheet | seat 20. FIG. As the poly material, F ☆☆☆ (F3 Star) was used. The storage box according to the comparative example (conventional example) as the second type of storage box is composed of a top board, a bottom plate, a shelf plate, and a side plate made of a conventional board material that does not include the functional sheet 20. Also, as the poly material, F ☆☆☆☆ (F Forster) having a formaldehyde emission rate one step lower than that in the case of the storage box according to the present invention was used in order to express the comparison result remarkably.

  For the two types of storage boxes, a formaldehyde emission concentration measurement test was conducted under the following conditions. First, a gas detector tube method was used to measure formaldehyde emission concentration. At this time, an environmental test chamber (manufactured by Tabai Espec: TBL-3HA2G2A) was prepared as a collection chamber, and the volume of the collection chamber was set to 12.5 m 3. The concentration of formaldehyde (HCHO) in the collection chamber itself was 0.00 ppm (by a gas monitor). Furthermore, as the HCHO collection environment, the specific measurement furniture installation position was arranged in the approximate center of the collection room. The environment in the collection chamber at the time of collection was set to a temperature of 25.0 ± 1 ° C. and a humidity of 80 ± 3%. As a measuring instrument, a detector tube type gas collector (GV-100S (manufactured by Gastec Co., Ltd.)) is used as a gas collector, and No. 1 as a formaldehyde detector tube. 91 L (measurement range: 0.1 to 5.0 ppm) was used. The standard number of aspirations was 5 times (100 ml / time).

  As a measuring method, each storage box was conditioned at a temperature of 25 ° C. and a humidity of 80%, and then covered with vinyl, a hole having a diameter of about 10 mm was formed at the center, and sealed with tape. This is put in an environmental test room and left in an environment of temperature 25 ° C. and humidity 80% RH for 5 hours. After the gas concentration becomes almost constant, a detector tube is attached to the tip of the gas sampling device, and the hole is inserted into the hole. The gas sampler was inserted and a specified number of times (5 times (500 ml)) was sucked, and then the detector tube was left for 1 minute at room temperature, and the color change density indicator value was directly read visually.

  As a result, in the case of the storage box according to the present invention, the color change concentration guide value of the formaldehyde detector tube is 0.7 ppm, whereas in the case of the storage box according to the comparative example, the color change concentration guide value of the formaldehyde detector tube is 2. It became 8 ppm. That is, the storage box according to the present invention is one-fourth the value of the storage box of the comparative example, despite the fact that one having a large one-stage formaldehyde emission rate (a bad condition) is used as the poly material. showed that. From this, it was found that the functional furniture material according to Embodiment 1 exhibits a very high formaldehyde adsorption effect.

  In Example 2, two types of polyflash storage boxes were prepared as furniture for the test specimen. In any case, the dimensions were an outer dimension 450 (W) × 400 (D) × 450 (h), and an inner dimension 410 (W) × 360 (D) × 403 (h) (unit: mm). The storage box according to the present invention as the first type storage box uses a board material similar to the board material 1 as the functional furniture material according to the first embodiment as its top plate. Further, in this storage box, the functional sheet 20 is arranged on the ceiling surface (lower surface) of the top plate. In addition, the bottom plate, the shelf plate, and the side plate were configured by a conventional board material that does not include the functional sheet 20. As the poly material, F ☆☆☆ (F3 Star) was used. The storage box according to the comparative example (conventional example) as the second type of storage box is composed of a top board, a bottom plate, a shelf plate, and a side plate made of a conventional board material that does not include the functional sheet 20. Moreover, as a poly material, the thing of F ☆☆☆ (F3 star) similar to the storage box according to the present invention was used.

  For the two types of storage boxes, a formaldehyde emission concentration measurement test was conducted under the following conditions. First, a gas detector tube method was used to measure formaldehyde emission concentration. At this time, an environmental test chamber (manufactured by Tabai Espec: TBL-3HA2G2A) was prepared as a collection chamber, and the volume of the collection chamber was set to 12.5 m 3. The concentration of formaldehyde (HCHO) in the collection chamber itself was 0.00 ppm (by a gas monitor). Furthermore, as the HCHO collection environment, the specific measurement furniture installation position was arranged in the approximate center of the collection room. The environment in the collection chamber at the time of collection was set to a temperature of 23.0 ± 1 ° C. and a humidity of 50 ± 3%. As a measuring instrument, a detector tube type gas collector (GV-100S (manufactured by Gastec Co., Ltd.)) is used as a gas collector, and No. 1 as a formaldehyde detector tube. 91 L (measurement range: 0.1 to 5.0 ppm) was used. The standard number of aspirations was 5 times (100 ml / time).

  As a measurement method, a hole having a diameter of about 10 mm was formed in the center of the storage box and sealed with a silicone rubber stopper. This is allowed to stand at room temperature for 96 hours, then stored in an environmental test room and left for 6 hours in an environment of a temperature of 23 ° C. and a humidity of 50% RH. A tube was attached, a gas sampler was inserted into the hole, and a specified number of times (5 times (500 ml)) was sucked. Thereafter, the detector tube was left at room temperature for 1 minute, and the color change density indicator value was directly read visually.

  As a result, in the case of the storage box according to the present invention, the color change concentration guide value of the formaldehyde detector tube is 0.8 ppm, whereas in the case of the storage box according to the comparative example, the color change concentration guide value of the formaldehyde detector tube is 4. It became 0 ppm. That is, the storage box according to the present invention showed a value that is one fifth that of the storage box of the comparative example. From this, it turned out that the functional furniture material which concerns on Embodiment 1 exhibits the very high formaldehyde adsorption effect similarly to the case of Example 1. FIG.

Embodiment 2
FIG. 5 is a front view showing functional furniture according to Embodiment 2 of the present invention. FIG. 6 is a cross-sectional view showing the functional furniture according to the second embodiment of the present invention when viewed from the side.
As shown in FIGS. 5 and 6, the functional furniture according to the second embodiment is embodied in a locker 30. The locker 30 uses a top plate 40 made of functional furniture as its component parts. That is, the functional sheet 20 is bonded and fixed to the lower surface (back surface) of the shelf board 40 by adhesion or the like. The base material to which the functional sheet 20 is bonded and fixed is composed of a flash structure constituting the top plate 40 itself, and the functional sheet 20 is attached to the bottom surface of the top plate 40 in the same manner as the board material 1 of the first embodiment. It is fixed with good appearance.

  The functional furniture according to the second embodiment exhibits the same effects as those of the first embodiment and exhibits the same effects.

Embodiment 3
FIG. 7 is a cross-sectional view showing the functional furniture according to Embodiment 3 of the present invention when viewed from the side.
As shown in FIG. 7, the functional furniture according to the third embodiment is embodied in a storage shelf 60. This storage shelf 60 uses a shelf board 70 made of functional furniture as its component parts. That is, the functional sheet 20 is bonded and fixed to the lower surface (back surface) of the shelf board 70 by adhesion or the like. The base material to which the functional sheet 20 is bonded and fixed is composed of a flash structure constituting the shelf board 70 itself, and the functional sheet 20 is attached to the lower surface of the shelf board 70 in the same manner as the board material 1 of the first embodiment. It is fixed with good appearance.

  The functional furniture according to the third embodiment exhibits the same effects as those of the first embodiment and exhibits the same effects.

  By the way, the functional furniture material according to the present invention is not limited to the board material 1 as in the first embodiment, but may be concrete as any functional furniture material as long as the functional sheet is bonded and fixed to the planar substrate. Can be For example, a simple flat plate material is used as a base material, and a functional sheet is bonded and fixed to one or both surfaces thereof, or a rod-like body or a columnar body is used as a base material, and a functional sheet is bonded and fixed to any one or more of the surfaces. You can do it. Moreover, the base material which joins and fixes a functional sheet can be made into the shape which has other surface shapes, such as curved plate shape other than flat plate shape.

Other Use Examples The functional furniture material according to the present invention can be used for the following furniture applications in addition to the above.
Library: Back of shelf board, back of top board, back, etc. Arrangement shelf, display shelf: back of shelf board, drawer back, back board, etc. Desk, table: back of top board, back of drawer, etc. Chair, sofa: back of seat board, back board, seat Cushion, etc. Partition, partition: Panel surface, etc. Locker, wardrobe: Top plate back, shelf back, back plate, door back, etc. Lower foot: Top plate back, shelf back, back plate, door back, etc. Close cabinet: top Back plate, shelf back, back plate, door back, etc. Cupboard: top plate back, shelf back, back plate, etc. Bed: headboard surface, floor board surface, etc. Counter: curtain plate surface, top plate back, etc. Kitchen: door back , Shelf back, etc. sink: door back, shelf back, etc. Hanging shelf: shelf back, back plate, door back, etc. Built-in storage: top plate back, shelf back, back plate, door back, etc. Storage box: inside, bottom plate Back etc. Store fixtures: Top plate back, shelf back, back plate, door back, etc. Cooking table, test bench: top plate back, shelf back, back plate, door back, etc.

  The functional sheet can be fixed to the base material by any means such as adhesion using an adhesive tape, bonding / fixing using a hook-and-loop fastener, and bonding / fixing using a stapler. Although the present invention has one of the main purposes of adsorption and decomposition of formaldehyde, it is of course possible to use it for the purpose of deodorization, moisture absorption, moisture absorption and desorption (humidity adjustment).

  The furniture material can have an arbitrary structure other than the flash structure, for example, a solid core structure.

FIG. 1 is an end view showing a functional furniture material according to Embodiment 1 of the present invention with one outer peripheral end face thereof opened. FIG. 2 is a perspective view schematically showing a functional sheet of the functional furniture material according to Embodiment 1 of the present invention. FIG. 3 is a cross-sectional view schematically showing a process of reducing the thickness of the functional sheet of the functional furniture material according to Embodiment 1 of the present invention by heat sealing, and (a) is a state before the thickness is reduced. (B) shows the state after the thickness is reduced. FIG. 4 is a process diagram schematically showing a method for manufacturing a functional sheet for functional furniture materials according to Embodiment 1 of the present invention. FIG. 5 is a front view showing functional furniture according to Embodiment 2 of the present invention. FIG. 6 is a cross-sectional view showing the functional furniture according to the second embodiment of the present invention when viewed from the side. FIG. 7 is a cross-sectional view showing the functional furniture according to Embodiment 3 of the present invention when viewed from the side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Base material 11 Core material 12 Surface plate material 13 Back surface plate material 14 Edge plate material 15 End processing plate material 20 Functional sheet 21 Sheet portion 21A Felt-like sheet material 25 Functional material layer 25a Silica gel 30 Locker (functional furniture) )
40 Top plate (functional furniture)
60 Storage shelf (functional furniture)
70 Shelf (functional furniture)

Claims (20)

A base material having a plate shape or a column shape;
A functional sheet bonded and fixed to one side in the thickness direction of the substrate;
The functional sheet has a pair of felt-like sheet portions disposed on both sides in the thickness direction thereof, and a function of exhibiting at least a chemical substance adsorption function by being fixedly sandwiched between the two sheet portions. A functional furniture material comprising a functional material layer. The functional sheet is formed into a felt-like sheet having a thickness smaller than the predetermined thickness by smoothing the surface by heat-pressing the surface of the felt-like sheet material having a predetermined thickness by heat press. And forming at least one of the pair of sheet portions,
The functional furniture material according to claim 1, wherein the functional sheet is bonded and fixed to the base material so that a sheet portion whose surface is smoothed is positioned on the side opposite to the base material.   At least one of the pair of sheet portions of the functional sheet is formed into a felt-like felt having air permeability, and the functional sheet is arranged so that the felt-like sheet portion having the air permeability is located on the side opposite to the base material. The functional furniture material according to claim 1 or 2, wherein the functional furniture material is bonded and fixed to a base material.   The functional furniture material according to claim 1 or 2, wherein both of the pair of sheet portions of the functional sheet have a felt shape having air permeability. A base material having a plate shape or a column shape;
A functional sheet bonded and fixed to one side in the thickness direction of the substrate;
The functional sheet is at least chemically sandwiched between a felt-like sheet portion disposed at a distance of three or more in the thickness direction and a layer between the two adjacent sheet portions. A functional furniture material comprising a functional material layer that exhibits a substance adsorption function. The functional sheet is formed into a felt-like sheet having a thickness smaller than the predetermined thickness by smoothing the surface by heat-pressing the surface of the felt-like sheet material having a predetermined thickness by heat press. And at least one of the two sheet portions arranged on both sides in the thickness direction is formed,
The functional furniture material according to claim 5, wherein the functional sheet is joined to the base material such that a sheet portion whose surface is smoothed is positioned on the side opposite to the base material.   Among the three or more sheet portions of the functional sheet, at least one of the two sheet portions disposed on both sides in the thickness direction and all the sheet portions disposed therein are air permeable. The felt sheet having the air permeability among the two sheet portions disposed on both sides in the thickness direction is positioned on the side opposite to the base material. The functional furniture material according to claim 5 or 6, wherein the functional furniture material is bonded and fixed to a base material.   The functional furniture material according to claim 5 or 6, wherein all of the three or more sheet portions of the functional sheet have a felt shape having air permeability.   In the functional sheet, the thickness of the sheet portion reduced in thickness by the heat sealing is in the range of about 0.2 mm to 0.5 mm, and the thickness of the functional material layer is in the range of about 1 mm to 1.5 mm. The functional furniture material according to claim 2, wherein the functional furniture material is formed so as to become.   The functional sheet is formed by forming a mixed fiber raw material in which a low melting point fiber having a thickness of about 4 to 8 denier and a non-low melting point fiber having a thickness of about 4 to 8 denier into a felt shape by a needle punch method. 3. The felt-shaped sheet material is formed, and the surface of the felt-shaped sheet material is heated and pressed by heat press to form a sheet portion having a smooth surface. The functional furniture material according to any one of 6, 6 and 9.   The functional sheet is formed by mixing a mixed fiber material in which a low melting point fiber having a thickness of about 4 to 8 denier and a non-low melting point fiber having a thickness of about 4 to 8 denier are mixed at a ratio of about 2 to 8, using a needle punch method. Forming the felt-like sheet material by forming a felt-like sheet material, and heat-pressing the surface of the felt-like sheet material with a heat press to form a smoothed sheet portion. The functional furniture material according to any one of claims 2, 6, and 9.   The functional material layer of the functional sheet is formed by laminating silica gel between the sheet parts in a layered manner, and by interlacing and bonding the fibers of the sheet part by a mechanical action by needle punching, between the two sheet parts. The functional furniture material according to claim 10 or 11, wherein the silica gel is fixedly sandwiched between the two sheet portions by interlaced fibers. The base material has a flat plate shape of a flash structure or a solid core structure having a core material forming a square shape, and a front plate and a back plate bonded and fixed to both sides in the thickness direction of the core,
Furthermore, the edge plate material of a predetermined thickness that is bonded and fixed so as to cover the outer peripheral edge portion of the outer surface of the back plate material of the base material;
An end portion bonded and fixed to the entire outer peripheral end surface of the base material so as to cover all of the outer peripheral end surface of the core member, the outer peripheral end surface of the front plate member, the outer peripheral end surface of the rear plate member, and the outer peripheral end surface of the edge plate member. Processing plate material,
The functional sheet is formed into a sheet shape that is formed to have substantially the same thickness as the edge plate member and has the same outer shape as the shape formed by the inner peripheral end surface of the edge plate member. The outer peripheral end surface is bonded and fixed to the outer surface of the back plate in a state where the outer peripheral end surface is in close contact with the inner peripheral end surface of the edge plate fixed to the back plate. The functional furniture material according to any one of 6, 9, 11, and 12. A web forming step of forming a sheet-like web from predetermined fibers;
A felt-like sheet material forming step of forming a felt-like sheet material having a predetermined thickness by bonding the fibers of the web;
A preliminary sheet forming step in which a pair of the felt-like sheet materials are arranged opposite to each other, and a functional material that exhibits at least a chemical substance adsorption function is fixedly sandwiched between the felt-like sheet materials to form a spare sheet. When,
A functional sheet that forms a functional sheet by forming at least one of the felt-like sheet materials of the preliminary sheet by heat pressing with a heat press to form a felt-like sheet portion having a thickness smaller than the predetermined thickness. Forming process;
A method of manufacturing a functional furniture material, comprising: a bonding and fixing step of bonding and fixing the functional sheet to a plate-like base material. A web forming step of forming a sheet-like web from predetermined fibers;
A felt-like sheet material forming step of forming a felt-like sheet material having a predetermined thickness by bonding the fibers of the web;
A sheet part forming step in which the felt-like sheet material is heat-pressed by heat press to form a felt-like sheet part having a thickness smaller than the predetermined thickness, and
While placing the sheet portion and either one of the felt-like sheet material and the sheet portion facing each other, a functional material that exhibits at least a chemical substance adsorption function is fixedly sandwiched therebetween, A functional sheet forming step of forming a functional sheet;
A method of manufacturing a functional furniture material, comprising: a bonding step of bonding and fixing the functional sheet to a plate-like base material.   In the functional sheet, the thickness of the sheet portion reduced in thickness by the heat sealing is in the range of about 0.2 mm to 0.5 mm, and the thickness of the functional material layer is in the range of about 1 mm to 1.5 mm. It forms so that it may become. The manufacturing method of the functional furniture material of Claim 13 or 14 characterized by the above-mentioned.   In the felt-like sheet material forming step, a mixed fiber raw material obtained by mixing a low melting point fiber having a thickness of about 4 to 8 denier and a non-low melting point fiber having a thickness of about 4 to 8 denier into a felt shape by a needle punch method. The method for producing a functional furniture material according to any one of claims 13 to 15, wherein the felt-like sheet material is formed.   The felt-like sheet material forming step according to any one of claims 13 to 15, wherein the low-melting fiber having a thickness of about 4 to 8 denier and a non-low melting fiber having a thickness of about 4 to 8 denier are used. A functional furniture material for forming the felt-like sheet material by forming a mixed fiber raw material obtained by mixing 2 and 8 into a felt shape by a needle punch method.   The method for producing a functional furniture material according to any one of claims 13 to 16, wherein the heat press is performed under conditions of a heating temperature of about 100 to 110 ° C and a heating and pressing time of about 1 minute. .   The functional furniture which uses the functional furniture material of any one of Claims 1 thru | or 13 as a component.

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