JP7261384B2 - Laminated sheets for insulation boards, insulation boards, structures and machinery - Google Patents

Description

The present embodiment relates to a laminated sheet for heat insulating board, heat insulating board, structure and machine tool.

2. Description of the Related Art Conventionally, in buildings such as houses, for example, insulation boards containing a foam insulation material have been used in order to improve insulation. Since such thermal insulation boards are flammable, the flame retardancy of the thermal insulation boards is enhanced by, for example, adding a flame retardant to foam insulation (see, for example, Patent Document 1). There is also a heat insulating board in which face materials such as aluminum foil are attached to the front and back surfaces of a foam heat insulating material in order to promote heat reflection.

Japanese Patent Application Laid-Open No. 2018-9120

By the way, the heat insulating board is required to satisfy the non-combustible certification requirement in the exothermic evaluation test using the cone calorimeter test based on ISO5660, which is one of the combustion tests. However, in the case of an insulation board in which a face material is attached to the front and back surfaces of a foam insulation material, gas generated when the foam insulation material is burned may stay between the face material and the foam insulation material, causing the insulation board to swell. There is In particular, in recent years, it has been considered to increase the thickness of the heat insulating board in order to further improve the heat insulating properties. In this case, as the volume of the foamed heat insulating material increases, the amount of gas generated from the foamed heat insulating material increases during the combustion test, and the above-described expansion of the heat insulating board may become more pronounced.

The present disclosure provides a laminated sheet for an insulation board, an insulation board, a structure, and a machine tool that can facilitate the escape of gas generated from foam insulation materials during a combustion test from the insulation board.

A laminated sheet for a heat insulating board according to the present embodiment is a laminated sheet for a heat insulating board, and includes a metal layer and a sealant layer provided on the metal layer. It includes a shaped part or a plurality of dot shaped parts.

In the laminated sheet for thermal insulation board according to the present embodiment, the sealant layer may include a plurality of linear portions arranged parallel to each other in plan view.

In the laminated sheet for thermal insulation board according to the present embodiment, the sealant layer may include a plurality of dot-shaped portions arranged in a grid pattern in plan view.

In the laminated sheet for thermal insulation board according to the present embodiment, the sealant layer may include a plurality of dot-shaped portions arranged in a zigzag pattern in plan view.

In the laminated sheet for thermal insulation board according to the present embodiment, the sealant layer may include a plurality of wavy line portions in plan view.

In the laminated sheet for thermal insulation board according to the present embodiment, the sealant layer may include a base portion located on the metal layer side, and the plurality of linear portions or the plurality of dot-shaped portions may protrude from the base portion.

In the laminated sheet for thermal insulation board according to the present embodiment, a primer layer or a film layer may be provided between the metal layer and the sealant layer.

In the laminated sheet for thermal insulation board according to the present embodiment, the plurality of linear portions or the plurality of dot-shaped portions are wider than the width of the portion on the metal layer side in a cross-sectional view. The width may be narrower.

In the laminated sheet for thermal insulation board according to the present embodiment, openings may be formed in the metal layer at positions not overlapping at least the linear portions or the dot-shaped portions in a plan view.

The heat insulating board according to the present embodiment includes a heat insulating foam material and the laminated sheet for the heat insulating board provided on the heat insulating foam material, and the sealant layer is adhered to the heat insulating foam material.

The structure according to this embodiment includes the insulation board.

A machine tool according to the present embodiment includes the heat insulation board.

According to the present embodiment, it is possible to facilitate the escape of gas generated from the foam insulation material through the insulation board during the combustion test.

FIG. 1 is a perspective view showing a laminated sheet for thermal insulation board according to one embodiment. FIG. 2 is a plan view showing a laminated sheet for heat insulation board according to one embodiment. FIG. 3 is a cross-sectional view (a cross-sectional view taken along the line III-III in FIG. 2) showing a laminated sheet for thermal insulation board according to one embodiment. FIG. 4 is a perspective view showing an insulation board according to one embodiment. FIG. 5 is a cross-sectional view showing an insulation board according to one embodiment. FIG. 6 is a perspective view showing a structure according to one embodiment. FIG. 7 is a perspective view showing a part of the manufacturing process of the laminated sheet for thermal insulation board. FIG. 8 is a front view showing a method of manufacturing an insulating board. FIGS. 9(a) and 9(b) are plan views showing a laminated sheet for thermal insulation board according to a first modification. FIGS. 10(a) and 10(b) are plan views showing a laminated sheet for thermal insulation board according to a second modification. FIG. 11 is a plan view showing a laminated sheet for thermal insulation board according to a third modification. FIG. 12 is a cross-sectional view showing a laminated sheet for thermal insulation board according to a fourth modification. FIG. 13 is a cross-sectional view showing a laminated sheet for heat insulation board according to a fifth modification. FIG. 14 is a cross-sectional view showing a laminated sheet for thermal insulation board according to a sixth modification. FIG. 15 is a cross-sectional view showing a laminated sheet for thermal insulation board according to a seventh modification. FIGS. 16(a) and 16(b) are plan views showing laminated sheets for insulating boards according to an eighth modification. FIG. 17 is a cross-sectional view showing a heat insulation board according to a ninth modification.

An embodiment will be described below with reference to the drawings. Each figure shown below is shown typically. Therefore, the size and shape of each part are appropriately exaggerated for easy understanding. In addition, it is possible to modify and implement as appropriate without departing from the technical idea. In addition, in each figure shown below, the same code|symbol is attached|subjected to the same part and detailed description may be partially abbreviate|omitted. In addition, numerical values such as dimensions and material names of each member described in this specification are examples as an embodiment, and are not limited to these, and can be appropriately selected and used. In this specification, terms specifying shapes and geometrical conditions, such as parallel, orthogonal, and perpendicular terms, not only have strict meanings but also include substantially the same states. Further, in this specification, the term “planar view” refers to a state seen from a normal direction perpendicular to the main surface of the target plate-like member.

(Structure of laminated sheet for thermal insulation board)
The configuration of the laminated sheet for thermal insulation board according to the present embodiment will be described with reference to FIGS. 1 to 3. FIG. FIG. 1 is a perspective view showing the laminated sheet for thermal insulation board according to the present embodiment, FIG. 2 is a plan view showing the laminated sheet for thermal insulation board according to the embodiment, and FIG. FIG. 4 is a cross-sectional view showing a sheet;

The laminated sheet (face material) 10 for thermal insulation board according to the present embodiment is provided on the thermal insulation foam material 51 and used for producing the thermal insulation board 50, as will be described later. As shown in FIGS. 1 to 3 , the laminated sheet 10 for thermal insulation board according to this embodiment includes a metal layer 11 and a sealant layer 20 provided on the metal layer 11 . Among them, the sealant layer 20 includes a plurality of linear portions 21 each linearly extending in plan view. Although the laminate sheet 10 for thermal insulation board has a substantially rectangular shape in plan view as a whole, the shape is not limited to this, and may be a polygonal shape in plan view, a circular shape in plan view, or the like.

The metal layers 11 are respectively provided on a pair of main surfaces of the heat insulating board 50 to be described later, and are layers that impart a heat ray reflecting function to the heat insulating board 50 . The metal layer 11 is formed over the entire laminated sheet 10 for thermal insulation board in plan view. The metal layer 11 is not particularly limited as long as it is a heat ray reflective metal material that reflects light in the near-infrared or infrared region. Specifically, a material containing aluminum, magnesium, silver, copper, or titanium can be used as the metal layer 11 . In particular, it is preferable to use an aluminum foil as the metal layer 11 . The planar shape of the metal layer 11 may be the same as the planar shape of the foam heat insulating material 51 to be described later. Also, the thickness T1 (FIG. 3) of the metal layer 11 may be in the range of 1 μm or more and 200 μm or less.

The sealant layer 20 is a layer for adhering the metal layer 11 to the heat insulating foam material 51 to be described later, and is formed on the surface of the laminate sheet 10 for heat insulating board facing the heat insulating foam material 51 side. Preferably, the sealant layer 20 is provided over substantially the entire area of the metal layer 11 in order to ensure the sealing performance between the metal layer 11 and the foamed heat insulating material 51 . As the sealant layer 20, a thermoplastic resin having a heat-sealing property that can be melted and fused together by heating and formed by melt-extrusion using an extruder or the like can be used. Examples of such thermoplastic resins include low-density polyethylene resin, medium-density polyethylene resin, high-density polyethylene resin, linear low-density polyethylene resin, and copolymerization with ethylene/α-olefin polymerized using a metallocene catalyst. Copolymer resin, ethylene/polypropylene copolymer resin, ethylene/vinyl acetate copolymer resin, ethylene/acrylic acid copolymer resin, ethylene/ethyl acrylate copolymer resin, ethylene/methacrylic acid copolymer resin, ethylene/ Graft polymerization of unsaturated carboxylic acid, unsaturated carboxylic acid, unsaturated carboxylic acid anhydride, ester monomer to methyl methacrylate copolymer resin, ethylene-maleic acid copolymer resin, ionomer resin, polyolefin resin, or A copolymer resin, a resin obtained by grafting maleic anhydride to a polyolefin resin, or the like can be used in combination of one or more. As the sealant layer 20, a hot-melt resin suitable for patterning can be used. Examples thereof include ethylene vinyl acetate resin, polypropylene, polyethylene olefin resin, rubber resin, polyamide (nylon) resin, and polyurethane resin.

In this embodiment, the sealant layer 20 is formed in a striped shape in a plan view. That is, the sealant layer 20 includes a plurality of linear portions 21 arranged parallel to each other in plan view. In this case, the plurality of linear portions 21 are composed of a plurality of linear portions 22 arranged parallel to each other. As shown in FIG. 3, the width W1 of the linear portion 22 (the distance in the direction perpendicular to the longitudinal direction of the linear portion 22) may be in the range of 0.1 mm or more and 10 mm or less. Adhesion between the straight portion 22 and the metal layer 11 can be ensured by setting the width W1 of the straight portion 22 to 0.1 mm or more. Further, by setting the width W1 of the linear portion 22 to 10 mm or less, it is possible to secure the width of the groove portion 23 for releasing the gas generated from the foamed heat insulating material 51 during the combustion test. Also, the height H1 (the height from the metal layer 11) of the linear portion 22 may be in the range of 1 μm or more and 100 μm or less. By setting the height H1 of the linear portion 22 to 1 μm or more, it is possible to ensure the height of the groove portion 23 for releasing the gas generated from the foamed heat insulating material 51 during the combustion test. In addition, by setting the height H1 of the straight portion 22 to 100 μm or less, the volume of the sealant layer 20 is reduced, the amount of gas generated from the sealant layer 20 is reduced when the heat insulating board 50 is burned, and the deterioration of the non-combustibility is suppressed. be able to. The width W1 and the height H1 of the straight portion 22 are uniform in the longitudinal direction of the straight portion 22 . In this case, the top surface of the linear portion 22 (the surface on the opposite side of the metal layer 11) is a flat surface. Adhesion between the sealant layer 20 and the foamed heat insulating material 51 may be enhanced.

Between the straight portions 22 adjacent to each other, groove portions (gas flow paths) 23 that are straight in a plan view are formed. The resin constituting the sealant layer 20 does not exist in the groove portion 23, and the metal layer 11 is exposed. As will be described later, the groove 23 plays a role of releasing gas generated from the foamed heat insulating material 51 during the combustion test. For this reason, it is preferable that the groove portion 23 extends to the peripheral portion of the laminated sheet 10 for insulating board. As shown in FIG. 3, the width W2 of the groove 23 (the distance in the direction perpendicular to the longitudinal direction of the groove 23) may be in the range of 1 mm or more and 50 mm or less. By setting the width W2 of the groove portion 23 to 1 mm or more, it is possible to facilitate the escape of the gas generated from the foamed heat insulating material 51 during the combustion test. Further, by setting the width W2 of the groove portion 23 to 50 mm or less, the adhesion between the straight portion 22 and the metal layer 11 can be ensured. A width W2 of the groove portion 23 is uniform in the longitudinal direction of the groove portion 23 .

(Configuration of insulation board)
Next, the configuration of the heat insulating board according to this embodiment will be described with reference to FIGS. 4 and 5. FIG. FIG. 4 is a perspective view showing the insulation board according to this embodiment, and FIG. 5 is a plan view showing the insulation board according to this embodiment.

As shown in FIGS. 4 and 5 , the heat insulating board 50 according to the present embodiment includes a heat insulating foam material 51 and the laminated sheet 10 for heat insulating board provided on the heat insulating foam material 51 . The heat insulating board 50 has a substantially rectangular shape in plan view, but is not limited to this, and may have a polygonal shape in plan view, a circular shape in plan view, or the like. Moreover, the thickness T2 (FIG. 5) of the heat insulating board 50 as a whole may be in the range of 10 mm or more and 500 mm or less.

The foam heat insulating material 51 is made of a rigid material having heat insulating properties, and is positioned at the central portion of the heat insulating board 50 in the thickness direction. The heat insulating foam material 51 has a substantially rectangular shape in plan view, but is not limited to this, and may have a polygonal shape in plan view, a circular shape in plan view, or the like. The foamed heat insulating material 51 may be made of, for example, rigid foamed polyurethane resin. A rigid polyurethane foam resin is produced from a first raw material containing at least a polyol compound and a second raw material containing an isocyanate. The polyol compound is not particularly limited, and polyether polyols, polyester polyols, and polyether ester polyols can be used in combination of one or more. As isocyanates, aliphatic or aromatic polyisocyanates having two or more isocyanate groups, mixtures thereof, and modified polyisocyanates obtained by modifying them can be used. In addition, the raw material for producing the foamed heat insulating material 51 may contain a foaming agent, a catalyst, an additive, and a flame retardant. The thickness T3 (FIG. 5) of the foamed heat insulating material 51 may be in the range of 5 mm or more and 495 mm or less.

As the laminated sheet 10 for thermal insulation board, for example, those shown in FIGS. 1 to 3 are used. The laminated sheets 10 for thermal insulation boards are provided on both of the pair of main surfaces of the thermal insulation board 51 , and the thermal insulation foam 51 is sandwiched between the pair of laminated sheets 10 for thermal insulation boards. In each laminated sheet 10 for thermal insulation board, the sealant layer 20 faces inside (the side of the heat insulating foam 51), and the metal layer 11 faces the outside (the side opposite to the heat insulating foam 51). In addition, by partially melting the sealant layer 20 of each laminated sheet 10 for thermal insulation boards, each laminated sheet 10 for thermal insulation boards is adhered to the insulating foam material 51 . In addition, the laminated sheet 10 for thermal insulation board may be provided only on one side of the pair of main surfaces of the foamed thermal insulation material 51 . In this case, the other surface of the foamed heat insulating material 51 may be exposed, and the foamed heat insulating material 51 may be covered with other layers such as glass, plastic, paper, resin-impregnated paper, coated paper, or the like. A film may be provided.

The above-described heat insulating board 50 is used by being attached to, for example, the walls, ceilings, or the like of structures or machinery that require heat insulation. Examples of such structures or machinery include buildings such as houses, buildings, and warehouses, automobiles such as passenger cars and refrigerated vehicles, transportation machinery such as ships such as refrigerated ships, and fixed structures such as vending machines. things are mentioned. FIG. 6 shows, as an example, a case where the insulation board 50 is attached to a building 80 consisting of a house. In this embodiment, a structure or machine tool provided with such an insulation board 50 is also provided. In addition, it is preferable that the grooves 23 of the sealant layer 20 of the laminated sheet for thermal insulation board 10 are arranged parallel to the vertical direction in a state of being attached to a structure or a machine tool.

(Manufacturing method of laminated sheet for thermal insulation board)
Next, with reference to FIG. 7, a method for manufacturing the laminated sheet 10 for thermal insulation board according to the present embodiment will be described. FIG. 7 is a schematic perspective view showing a part of the manufacturing process of the laminated sheet 10 for thermal insulation board according to the present embodiment.

First, a metal layer 11 such as an aluminum foil wound into a roll is prepared, and the metal layer 11 is unwound from the roll and supplied. Subsequently, as shown in FIG. 7, a thermoplastic synthetic resin that constitutes the sealant layer 20 is melt-extruded onto one of the main surfaces of the metal layer 11 . As a result, a plurality of striped linear portions 21 arranged parallel to each other in a plan view are formed on the metal layer 11 . In this case, the sealant layer 20 of the laminated sheet 10 for thermal insulation board is formed by melt extrusion from a plurality of nozzles positioned at the tip of a T-die 61 as an extruder. A plurality of nozzles of the T-die 61 are arranged in a row in a direction orthogonal to the direction of supply of the metal layer 11 (direction of arrow in FIG. 7). Moreover, the metal layer 11 is exposed from a plurality of grooves 23 formed between the linear portions 21 (linear portions 22). After that, the laminated sheet 10 for insulating board is wound up by a winder (not shown). In this way, the laminate sheet 10 for thermal insulation board having the metal layer 11 and the sealant layer 20 provided on the metal layer 11 is manufactured.

(Manufacturing method of insulation board)
Next, referring to FIG. 8, a method for manufacturing the heat insulation board 50 according to the present embodiment will be described. FIG. 8 is a schematic front view showing a part of the manufacturing process of the heat insulating board 50 according to this embodiment.

First, as shown in FIG. 8, a first roll 62 wound with the laminated sheet 10 for insulation board on the front side and a second roll 63 wound with the laminated sheet 10 for insulation board on the back side are prepared. Next, from the second roll 63, the laminated sheet 10 for thermal insulation board on the back side is unwound. At this time, the sealant layer 20 of the laminate sheet 10 for thermal insulation board is unwound so as to face upward. In this way, while the laminated sheet 10 for thermal insulation board on the back side is continuously conveyed, the insulating foam material 51 is formed on the laminated sheet 10 for thermal insulation board on the back side. During this time, for example, a first raw material containing at least a polyol compound and a second raw material containing isocyanate are mixed in a foaming machine 64, and the mixed liquid is discharged from the foaming machine 64 onto the laminated sheet 10 for thermal insulation board on the back side. . The liquid from the foaming machine 64 foams and hardens on the laminated sheet 10 for insulating board on the back side, thereby forming the foamed heat insulating material 51 .

Also, the laminate sheet 10 for thermal insulation board on the surface side is unwound from the second roll 63 . At this time, the sealant layer 20 of the laminated sheet 10 for thermal insulation board faces downward. The laminated sheet 10 for thermal insulation board on the surface side is arranged on the foamed thermal insulation material 51 while being continuously conveyed. Subsequently, the laminated sheet 10 for insulating board on the front side and the laminated sheet 10 for insulating board on the back side are heated by the double conveyor 65 while being in contact with the insulating foam material 51 . As a result, the sealant layer 20 of each laminated sheet 10 for thermal insulation boards is partially melted and adhered to the foamed thermal insulation material 51 .

After that, the insulating board laminated sheet 10 and the foam insulating material 51 are cut into a predetermined size by a cutting machine 66 to obtain the insulating board 50 .

In the above, the step of foaming and curing the raw material for the foamed heat insulating material 51 to produce the foamed heat insulating material 51 and the step of adhering the heat insulating board laminated sheet 10 to the foamed heat insulating material 51 are continuously performed. This is explained using the case where However, it is not limited to this. First, a block-shaped heat insulating foam material 51 having a predetermined thickness is produced by foaming and curing a raw material for the heat insulating foam material 51, and then the laminated sheets 10 for insulating boards are adhered to the front and back sides of the heat insulating foam material 51, respectively. can be

(Action of this embodiment)
Next, the operation of the heat insulating board 50 according to this embodiment will be described.

A heat generation evaluation test using a cone calorimeter test conforming to ISO5660, which is one of the combustion tests, is performed on the heat insulating board 50 according to the present embodiment. A cone calorimeter is a machine that heats a 10 cm x 10 cm specimen with a cone heater and measures the oxygen concentration in the generated gas. According to this cone calorimeter test, as an evaluation of combustibility, the total calorific value, maximum heat release rate, combustion time from ignition to extinction, weight retention rate (weight percentage after the end of the test based on the weight before the test) ), etc. can be measured. When such a combustion test is performed using the heat insulating board 50, the gas generated when the foam heat insulating material 51 burns is generated between the heat insulating board laminate sheet 10 and the foam heat insulating material 51, and the amount of this gas is It is conceivable that the heat insulation board 50 will swell if it is a large amount.

On the other hand, according to the present embodiment, the sealant layer 20 of the laminated sheet 10 for insulation board has a plurality of linear portions 21 (linear portions 22) in plan view, and the linear portions 21 and the linear portions 21 A linear groove portion 23 is formed between the shape portion 21 and the groove portion 21 . As a result, the gas generated by the combustion of the thermal foam material 51 during the combustion test is guided along the longitudinal direction of the groove 23 and escapes from the thermal insulation board 50 to the outside. As a result, it is possible to suppress the retention of gas due to the combustion of the foamed heat insulating material 51 between the foamed heat insulating material 51 and the heat insulating board laminated sheet 10 , thereby suppressing the expansion of the heat insulating board 50 . In particular, the expansion of the heat insulating board 50 can be suppressed even when the thickness of the foam heat insulating material 51 is increased in order to further improve the heat insulating property, and the gas generated from the foam heat insulating material 51 increases during the combustion test.

Further, according to the present embodiment, sealant layer 20 includes a plurality of linear portions 21 in a plan view, so that the sealant layer 20 is more effective than the case where the resin forming sealant layer 20 is formed over the entire surface of foamed heat insulating material 51 . The volume of layer 20 can be reduced. Thereby, the amount of gas generated from the sealant layer 20 when the heat insulating board 50 is burned can be reduced.

Further, according to the present embodiment, the sealant layer 20 of the laminated sheet for thermal insulation board 10 includes a plurality of linear portions 22 arranged parallel to each other in plan view. As a result, the gas generated from the sealant layer 20 when the heat insulating board 50 is burned can be guided in one direction (longitudinal direction of the straight portion 22), allowing the gas to escape efficiently. In addition, the sealant layer 20 can be efficiently produced on the metal layer 11 by using the T-die 61 (FIG. 7), for example.

(Modification)
Next, with reference to FIGS. 9 to 17, modifications of the insulating board laminated sheet and the insulating board will be described. 9 to 17 are diagrams showing laminated sheets for insulating boards or insulating boards according to respective modifications. In FIGS. 9 to 17, the same reference numerals are assigned to the same parts as those in FIGS. 1 to 8, and detailed description thereof will be omitted.

(First modification)
As shown in FIGS. 9(a) and 9(b), the sealant layer 20 of the laminated sheet for thermal insulation board 10 may have a plurality of dot-shaped portions 24 arranged in a grid pattern in plan view. In this case, the laminated sheet 10 for thermal insulation board has a metal layer 11 and a sealant layer 20 including a plurality of dot-shaped portions 24 projecting from the metal layer 11 . Each dot-shaped portion 24 is scattered on the metal layer 11 in an island-like manner, and is arranged apart from other dot-shaped portions 24 in the horizontal direction. Each dot-shaped portion 24 may be rectangular in plan view (FIG. 9(a)) or may be circular in plan view (FIG. 9(b)). Grid-shaped grooves (gas flow paths) 23 are formed between adjacent dot-shaped portions 24 . The resin constituting the sealant layer 20 does not exist in the groove portion 23, and the metal layer 11 is exposed. This groove portion 23 plays a role of releasing the gas generated from the foamed heat insulating material 51 during the combustion test. According to this modification, the gas generated from the foamed heat insulating material 51 can be released in both the vertical and horizontal directions through the lattice-shaped grooves 23 during the combustion test. can be suppressed.

(Second modification)
As shown in FIGS. 10(a) and 10(b), the sealant layer 20 of the laminate sheet 10 for thermal insulation board may have a plurality of dot-shaped portions 24 arranged in a zigzag pattern in plan view. In this case, the laminated sheet 10 for thermal insulation board has a metal layer 11 and a sealant layer 20 including a plurality of dot-shaped portions 24 projecting from the metal layer 11 . Each dot-shaped portion 24 is scattered on the metal layer 11 in an island-like manner, and is arranged apart from other dot-shaped portions 24 in the horizontal direction. Each dot-shaped portion 24 may be rectangular in plan view (FIG. 10(a)) or may be circular in plan view (FIG. 10(b)). Groove portions (gas flow paths) 23 are formed between adjacent dot-shaped portions 24 . The resin constituting the sealant layer 20 does not exist in the groove portion 23, and the metal layer 11 is exposed. This groove portion 23 plays a role of releasing the gas generated from the foamed heat insulating material 51 during the combustion test. According to this modification, the gas generated from the foamed heat insulating material 51 can be released in both the vertical and horizontal directions through the lattice-shaped grooves 23 during the combustion test. can be suppressed. In addition, according to this modification, when the laminated sheet 10 for insulating board is wound into a roll (FIG. 10), the portion where the sealant layer 20 is present is dispersed in the width direction of the roll, so the roll can be handled easily. can be made easier.

(Third modification)
As shown in FIG. 11, the sealant layer 20 of the laminate sheet 10 for thermal insulation board may have a plurality of wavy line portions 25 (linear portions 21) in plan view. That is, the laminated sheet 10 for thermal insulation board has a metal layer 11 and a sealant layer 20 including a plurality of wavy line portions 25 projecting from the metal layer 11 . The plurality of wavy line portions 25 are arranged in parallel and spaced apart from each other. Between adjacent wavy line portions 25 , wavy groove portions (gas flow paths) 23 are formed in plan view. The resin constituting the sealant layer 20 does not exist in the groove portion 23, and the metal layer 11 is exposed. This groove portion 23 plays a role of releasing the gas generated from the foamed heat insulating material 51 during the combustion test. According to this modification, the gas generated from the foamed heat insulating material 51 can be released through the grooves 23 during the combustion test, so the gas can be released more efficiently, and the expansion of the heat insulating board 50 can be suppressed. can. Further, according to this modification, when the laminated sheet 10 for insulating board is wound into a roll (FIG. 11), the portion where the sealant layer 20 exists is dispersed in the width direction of the roll, so the roll can be handled easily. can be made easier.

(Fourth modification)
As shown in FIG. 12, the sealant layer 20 of the laminate sheet 10 for thermal insulation board may include a base portion 26 located on the metal layer 11 side. The base 26 is provided over substantially the entire surface of the metal layer 11 . Moreover, the plurality of linear portions 21 protrude from the base portion 26 toward the opposite side of the metal layer 11 . The base portion 26 and the linear portion 21 are integrally formed of the same material. A groove (gas flow path) 23 is formed between adjacent linear portions 21 . A base portion 26 exists on the bottom surface of the groove portion 23 , and the entire surface of the metal layer 11 is covered with the base portion 26 . According to this modification, the base portion 26 of the sealant layer 20 can enhance the adhesion between the sealant layer 20 and the metal layer 11 and the adhesion between the sealant layer 20 and the foamed heat insulating material 51 . Dot-shaped portions 24 (FIGS. 9 and 10) may be used instead of the linear portions 21. FIG. Moreover, in order to secure adhesion between the metal layer 11 and the sealant layer 20, a primer layer may be inserted between them.

(Fifth Modification)
As shown in FIG. 13, a film layer 31 may be provided between the metal layer 11 and the sealant layer 20 of the laminate sheet 10 for thermal insulation board. This laminate sheet 10 for thermal insulation board is obtained by first forming a sealant layer 20 including a plurality of linear portions 21 on a film layer 31, and then bonding the film layer 31 to the metal layer 11 using an adhesive 32. , can be made. As the film layer 31, polyethylene terephthalate, nylon, or the like can be used. Also, the thickness of the film layer 31 may be in the range of 5 μm or more and 150 μm or less. By setting the thickness of the film layer 31 to 5 μm or more, the strength of the laminated sheet 10 for thermal insulation board can be ensured. Further, when the thickness of the film layer 31 is 150 μm or more, there is a possibility that the nonflammable property of the laminated sheet 10 for thermal insulation board is deteriorated. According to this modified example, by preparing a laminated body of the film layer 31 and the sealant layer 20 in advance, the laminated body can be appropriately attached to the metal layer 11 to produce the laminated sheet 10 for insulating board. can. Dot-shaped portions 24 (FIGS. 9 and 10) may be used instead of the linear portions 21. FIG. Moreover, in order to ensure the adhesion between the film layer 31 and the sealant layer 20, a primer layer may be inserted between them.

(Sixth modification)
As shown in FIG. 14, a primer layer 33 may be provided between the metal layer 11 and the sealant layer 20 of the laminate sheet 10 for thermal insulation board. The primer layer 33 can be formed by using an anchor coating agent on the metal layer 11 and coating it by a normal coating method such as gravure coating or roll coating. Examples of anchor coating agents that can be used include organic titanium anchor coating agents, isocyanate anchor coating agents, polyethyleneimine anchor coating agents, polybutadiene anchor coating agents, and the like. The thickness of the primer layer 33 may range from 1 μm to 50 μm. According to this modification, the bonding strength between the metal layer 11 and the sealant layer 20 can be increased by the primer layer 33 .

(Seventh Modification)
As shown in FIG. 15 , in a cross-sectional view, each of the plurality of linear portions 21 of the laminated sheet 10 for insulation board has a width on the opposite side of the metal layer 11 that is larger than the width of the portion on the metal layer 11 side. It may be narrow. In this case, the linear portion 21 has a substantially trapezoidal cross section. A groove (gas flow path) 23 is formed between adjacent linear portions 21 . Groove 23 has a width on the opposite side of metal layer 11 wider than that on the metal layer 11 side in cross-sectional view. According to this modification, by widening the region of the groove portion 23 on the side of the foamed heat insulating material 51 , when the sealant layer 20 and the foamed heat insulating material 51 are adhered, the melted sealant layer 20 causes foam insulation in the groove portion 23 . By not covering the material 51 side, it is possible to secure a passage for the gas generated from the foamed heat insulating material 51 during the combustion test. Dot-shaped portions 24 (FIGS. 9 and 10) may be used instead of the linear portions 21. FIG. Moreover, in order to secure adhesion between the metal layer 11 and the sealant layer 20, a primer layer may be inserted between them.

(Eighth modification)
As shown in FIGS. 16(a) and 16(b), openings 16 may be formed in the metal layer 11 of the laminated sheet 10 for insulation board at positions not overlapping at least the linear portions 21 in plan view. In this case, a plurality of openings 16 are formed in the metal layer 11, and the plurality of openings 16 are arranged in the plane of the metal layer 11 at uniform intervals. Alternatively, the multiple openings 16 may be non-uniformly arranged. For example, the plurality of openings 16 may be arranged so that the center of the metal layer 11, which is a place where it is difficult for gas to escape during the combustion test, is denser. Each opening 16 has a square shape in plan view and penetrates the metal layer 11 in the thickness direction. In addition, a plurality of openings 16 may be arranged in the form of lattice points, and each opening 16 may be formed across the groove portion (gas flow path) 23 and the linear portion 21 in a plan view (Fig. 16(a) )). Alternatively, a plurality of openings 16 may be arranged in a zigzag pattern, and each opening 16 may be formed across linear portions 21 adjacent to each other in plan view (FIG. 16B). According to this modification, the gas generated from the foam insulation material 51 can be released not only through the grooves 23 but also through the openings 16 during the combustion test. can be suppressed. Dot-shaped portions 24 (FIGS. 9 and 10) may be used instead of the linear portions 21. FIG.

(Ninth modification)
As shown in FIG. 17 , a plurality of recessed portions 52 may be formed on the insulating board laminated sheet 10 side of the insulating foam material 51 of the insulating board 50 . In this case, each recessed portion 52 may be linearly formed in plan view. Although the recessed portion 52 is formed at a position corresponding to the groove portion 23 of the laminated sheet for insulating board 10 , the recessed portion 52 is not limited to this and may be formed at a position partially overlapping the linear portion 21 . According to this modification, the gas generated from the thermal insulation foam material 51 can escape not only through the grooves 23 of the laminated sheet for thermal insulation board 10 but also through the recesses 52 of the thermal insulation foam material 51 during the combustion test. The escape path for the gas is widened, the gas can escape more efficiently, and the expansion of the heat insulating board 50 can be suppressed. In addition, by roughening at least one of the pair of main surfaces of the foamed heat insulating material 51, the adhesiveness to the laminated sheet for heat insulating board 10 can be enhanced, and the gas release property during the combustion test can be improved. The planar shape of the recessed portion 52 is similar to the planar shape of the sealant layer 20 described above. ) Dots arranged in a zigzag pattern may be used. Furthermore, in order to further improve the gas release property during the combustion test, the planar shape of the recessed portion 52 is made to correspond to the planar shape of the groove portion 23 of the laminated sheet for heat insulating board 10, and the recessed portion 52 and the groove portion 23 are used as gas flow paths. You may make it use together.

It is also possible to appropriately combine a plurality of constituent elements disclosed in the above embodiments and modifications as necessary. Alternatively, some components may be deleted from all the components shown in the above embodiments and modifications.

REFERENCE SIGNS LIST 10 laminated sheet for thermal insulation board 11 metal layer 20 sealant layer 21 linear portion 22 linear portion 23 groove portion 24 dot-shaped portion 50 thermal insulation board 51 foamed thermal insulation material

Claims (11)

A laminated sheet for an insulation board,
a metal layer;
and a sealant layer provided on the metal layer,
The sealant layer includes a plurality of linear portions or a plurality of dot-shaped portions in plan view,
The laminated sheet for a heat insulating board, wherein the sealant layer includes a base portion located on the metal layer side, and the plurality of linear portions or the plurality of dot-shaped portions protrude from the base portion. 2. The laminated sheet for thermal insulation board according to claim 1, wherein said sealant layer includes a plurality of linear portions arranged parallel to each other in plan view. 2. The laminated sheet for a heat insulating board according to claim 1, wherein said sealant layer includes a plurality of dot-shaped portions arranged in a grid pattern in plan view. 2. The laminated sheet for thermal insulation board according to claim 1, wherein said sealant layer includes a plurality of dot-shaped portions arranged in a zigzag pattern in plan view. 2. The laminate sheet for a heat insulating board according to claim 1, wherein said sealant layer includes a plurality of wavy line portions in plan view. The laminate sheet for thermal insulation board according to any one of claims 1 to 5 , wherein a primer layer or a film layer is provided between said metal layer and said sealant layer. The plurality of linear portions or the plurality of dot-shaped portions according to any one of claims 1 to 6 , wherein the width of the portion opposite to the metal layer is narrower than the width of the portion on the side of the metal layer in a cross-sectional view. The laminated sheet for thermal insulation board according to any one of the above. A laminated sheet for an insulation board,
a metal layer;
and a sealant layer provided on the metal layer,
The sealant layer includes a plurality of linear portions or a plurality of dot-shaped portions in plan view,
A laminated sheet for a heat insulating board, wherein openings are formed in the metal layer at positions not overlapping at least the linear portions or the dot portions in a plan view. foam insulation;
A laminated sheet for an insulation board according to any one of claims 1 to 8 provided in the foam insulation material,
An insulation board, wherein the sealant layer is adhered to the foam insulation. A structure comprising the insulation board of claim 9 . A machine tool comprising the insulation board according to claim 9 .

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