JP3095285B2 - Non-combustible laminate sheet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-combustible laminate sheet which is formed by laminating a metal foil and a non-combustible sheet and is used for building materials requiring heat resistance and non-combustibility. The concept of the "sheet" here is not limited to a thin material, but includes a thick material.

[0002]

2. Description of the Related Art Conventionally, a laminate sheet formed by laminating a metal foil, for example, an aluminum foil with a plastic film, paper, cloth, etc., takes advantage of the characteristics of each of the laminate sheets, wrapping paper, containers, flexible printed boards, conductive adhesive tapes. Widely used for various packaging materials, electric / electronic materials, building materials, industrial materials, etc.

[0003] In addition, as a metal foil, an aluminum foil or the like is generally attached to a heat insulating material such as glass wool or rock wool for heat insulation and heat retention of building materials.

[0004] Further, in order to keep the temperature of the pipe, the aluminum foil may be used as a single sheet, embossed, corrugated, and wound around the pipe. When this aluminum foil was used to keep the pipe warm, a layer of air was formed between the pipe and the pipe, and heat was cut off from the outside air to insulate and keep the heat, thereby protecting the inside of the pipe.

[0005]

However, a conventional laminated sheet obtained by laminating a metal foil with a plastic film or the like has poor heat resistance, and is required to melt or burn at high temperatures or in places where nonflammability is required. Could not be used.

On the other hand, when a metal foil is embossed or corrugated alone, it is sometimes required to increase the film thickness in order to increase strength and rigidity. When the metal foil becomes thicker than about 20 μm, cracks and tears occur due to the poor viscoelasticity of the metal foil in embossing and corrugating, so that it is difficult to perform these bending processes. For this reason, there is generally a limit to the thickness of a metal foil that can be bent.

[0007] Further, in the heat insulating sheet in which an aluminum foil is adhered to a heat insulating material such as glass wool or rock wool, the aluminum foil starts to soften at an ambient temperature of about 400 ° C, and the predetermined sheet shape cannot be maintained. Can be used only under relatively low temperature conditions.

Accordingly, the present invention provides a laminate sheet which can be bent without breaking even if the metal foil constituting a part of the laminate sheet is relatively thick, has nonflammability, and has a predetermined shape even at a high temperature. Incombustible lamine that can be used and maintained
The purpose is to provide a seat sheet .

[0009]

Means for Solving the Problems] incombustible laminated sheet according to claim 1, a metal foil, a fibrous brucite
Comprising a non-combustible sheet obtained by papermaking a slurry containing as a main material, and an inorganic adhesive for bonding the metal foil and incombustible sheet.

[0010] The non-combustible laminate sheet according to claim 2
Contains metal foil and fibrous brucite as main components
A non-combustible sheet made of slurry and potassium silicate
And antimony pentoxide, and the metal foil
Water-soluble or water-dispersible inorganic to bond with non-combustible sheet
And an adhesive .

[0011] The non-combustible laminate sheet according to claim 3
Is the structure of claim 1 or 2,
Slurry for papermaking is further used as an auxiliary material.
Contains sepiolite.

A non-combustible laminate sheet according to claim 4
Is metal foil, fibrous brucite and sepiolite
Non-combustible sheet made by slurry-forming a slurry mainly containing
And an inorganic adhesive for joining the metal foil and the non-combustible sheet
And

[0013] The non-combustible laminate sheet according to claim 5
Is metal foil, fibrous brucite and sepiolite
Non-combustible sheet made by slurry-forming a slurry mainly containing
And potassium silicate and antimony pentoxide
Water-soluble or non-combustible sheet for joining the metal foil and the non-combustible sheet.
Comprises a water-dispersible inorganic adhesive.

[0014]

In the non-combustible laminate sheet according to the first aspect, when the metal foil is cracked when it is bent, the non-combustible sheet retains its shape due to its viscoelastic force. Maintain a predetermined shape as a whole.

Further, since the metal foil, the non-combustible sheet, and the inorganic adhesive are all inorganic and non-combustible, they can be used in flammable places.

Further, since the shape of the non-combustible sheet can be maintained even at a high temperature, even if the metal foil is softened by the high temperature,
Reinforcing it, the laminate sheet retains its shape as a whole.

In particular, the non-combustible sheet is a fibrous blue
Sulphate containing magnesium (magnesium hydroxide mineral) as the main material
Lee is made by papermaking. This brucite has its hydroxyl group
Due to its excellent solidification, adsorption and thixotropic properties,
Improves the solidification of the non-combustible sheet. Also blue
The site has excellent compatibility with water,
Preparation of the slurry is necessary because it is easily charged and easily dispersed.
It can be performed easily and smoothly. Therefore, the slurry
Non-combustible sheet can be easily formed by papermaking from
And the formed non-combustible sheet has sufficient shape retention
Have.

As a result, when the metal foil is a relatively thick film
But the non-combustible sheet stably supports the metal foil,
Smooth the non-combustible laminate sheet to prevent
It can be easily bent.

Brucite also has excellent fire resistance,
Has flammability. That is, natural magnesium hydroxide ore
The brucite, which is a substance, absorbs moisture due to thermal decomposition during heating.
Due to its self-extinguishing action, excellent fire resistance
Demonstrate the properties and incombustibility In addition, brucite naturally
It can be obtained at a low price as a mineral produced in large quantities. Accordingly
The noncombustible sheet can be manufactured at low cost by papermaking.
You.

A non-combustible laminate sheet according to claim 2
Is an inorganic adhesive that joins the metal foil and the non-combustible sheet,
Water synthesized from potassium silicate and antimony pentoxide
As a soluble or water-dispersible inorganic adhesive,
It is different from the non-combustible laminate sheet of claim 1. Therefore, billing
In addition to having the same effect as in Item 1, potassium silicate and pentaacid
Water-soluble or water-dispersible
Machine adhesive securely and firmly connects metal foil and non-combustible sheet
Stable joining, high non-flammability and fire resistance
You.

The non-combustible laminate sheet according to claim 3
Means that the slurry further contains sepiolite as an auxiliary material.
Sepiolite as an auxiliary material to contain
It contributes to improving the solidification of the non-combustible sheet. That is, Sepio
Wright is a natural hydrous magnesium silicate mineral,
Due to its hydroxyl group, it excels in solidification, adsorption, thixotropic, etc.
Therefore, as an auxiliary material, solidification of non-combustible sheet by papermaking
Is further improved.

A non-combustible laminate sheet according to claim 4
Means that the main material for making noncombustible sheets is
Claim 1 in that it contains sepiolite.
Differs from fire laminate sheet. Therefore, the same as claim 1
In addition to its effect, sepiolite is combined with Brucite.
By preparing a non-combustible sheet slurry
To further increase the solidification of the non-combustible sheet and increase its strength.
Can be strengthened.

Sepiolite is available from Brucite.
Has high thermal stability, making it nonflammable
It also has an excellent effect on the shape retention of the sheet. Accordingly
And both brucite and sepiolite as main materials
Non retardant sheets papermaking from a slurry containing a further high
Exhibits fire resistance and non-combustibility.

Further, sepiolite also has a hydroxyl group.
Excellent in solidification, adsorption, thixotropic, etc.
Further improves the solidification of the non-combustible sheet. Furthermore, Sepio
Wright also has excellent dispersibility in water.
It can be performed easily and smoothly. Therefore, the non-combustible
Can be produced efficiently by papermaking. In addition, Sepio
Light is also inexpensive as a naturally occurring mineral in large quantities
it can. Therefore, low-cost non-combustible sheets
Can be manufactured by strike.

A non-combustible laminate sheet according to claim 5
Is an inorganic adhesive that joins the metal foil and the non-combustible sheet,
Water synthesized from potassium silicate and antimony pentoxide
As a soluble or water-dispersible inorganic adhesive,
It is different from the non-combustible laminate sheet of claim 4. Therefore, billing
In addition to having the same effect as in item 4, potassium silicate and pentaacid
Water-soluble or water-dispersible
Machine adhesive securely and firmly connects metal foil and non-combustible sheet
Stable joining, high non-flammability and fire resistance
You.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing a non-combustible laminate sheet according to one embodiment of the present invention.

In the drawing, 1 denotes a film thickness of 20 to 100 μm
This is a laminate sheet formed by laminating and joining an aluminum foil 2 having a thickness of about 1 and a non-combustible sheet 3 having a paper thickness of about 0.1 to 1.0 mm with an inorganic adhesive 4. The non-combustible sheet 3 is a non-combustible paper made of a natural fibrous magnesium hydroxide (mineral name: BRUCITE) as a main component, which is formed by a manufacturing method described later. On the other hand, the inorganic adhesive 4 is of a water-soluble or water-dispersed type, and for example, various heat-resistant inorganic agents such as a combination of potassium silicate and antimony pentoxide can be used.

FIG. 2 shows a method of manufacturing the laminated sheet 1 having the above-described structure.

FIG. 2 is a schematic process diagram showing a method for producing a non-combustible laminate sheet according to one embodiment of the present invention.

The figure shows a processing method called wet lamination, 11 is an aluminum foil feeding bobbin for feeding the aluminum foil 2 to the crimping joint, and 12 is an aluminum foil 2 fed from the aluminum foil feeding bobbin 11. Is an application roller for applying the inorganic adhesive 4 of the adhesive tank 13 to one side of the device, and 14 is a non-combustible sheet feeding bobbin for feeding the non-combustible sheet 3 to the pressure bonding portion. Reference numeral 15 denotes a pair of upper and lower pressure rollers for pressing and bonding the aluminum foil 2 fed from the aluminum foil feeding roller 11 and the non-combustible sheet 3 fed from the non-combustible sheet feeding bobbin 14.
Reference numeral denotes a drying furnace, and reference numeral 17 denotes a winding bobbin 17 for winding the laminated sheet 1 dried and solidified in the drying furnace 16.

In order to manufacture the laminated sheet 1 by the above-mentioned apparatus, first, in the feeding step, the aluminum foil 2 is fed out from the aluminum foil feeding bobbin 11 at a predetermined speed.
Next, in the application step, the inorganic adhesive 4 in the adhesive tank 13 is applied to the entire surface of the aluminum foil 2 with a uniform film thickness while passing through the application roller 12. The aluminum foil 2 coated with the inorganic adhesive 4 is fed to the pressure roller 15 while maintaining the wet state because the inorganic adhesive 4 is a water-soluble or water-dispersible type. At the same time, the non-combustible sheet feeding bobbin 1
4 from the aluminum foil feeding bobbin 1
The aluminum foil 2 fed from 1 is fed in synchronization with the feeding speed.

Next, in the joining step, the aluminum foil 2 and the non-combustible sheet 3 respectively fed from the aluminum foil supplying bobbin 11 and the non-combustible sheet supplying bobbin 14 are inserted between a pair of upper and lower pressure rollers 15. Then, these are pressed together from above and below to form a laminated state. Next, the aluminum foil 2 and the non-combustible sheet 3 formed in a laminated state are guided into a drying furnace 16 and heated at a predetermined temperature for a predetermined time, so that moisture in the inside is scattered between the particles of the non-combustible sheet 3 and dried. Let it solidify. Then, after leaving the drying furnace 16, it is cooled, cut into a certain width, and wound on a winding bobbin 17.

Through the above steps, the laminate sheet 1 in which the aluminum foil 2 and the non-combustible sheet 3 are laminated with the inorganic adhesive 4 is completed.

The laminate sheet 1 can be used alone as it is in a planar shape, or can be used as a building material by being attached to a heat insulating material such as glass wool or rock wool.

The laminate sheet 1 may be used alone after it is embossed or corrugated to form an uneven shape.

In the case of embossing, it can be formed by press-fitting an engraving roller using a well-known processing method.

It should be noted that even if these bending processes are performed, the aluminum foil 2 remains in the non-combustible sheet 3 having viscoelasticity.
And the aluminum foil 2 is not broken as in the case where the aluminum foil 2 is folded alone.

Next, an example of manufacturing the non-combustible sheet 3 is shown in FIG.
It will be described based on.

In this embodiment, the non-combustible sheet 3 is
It was manufactured by making magnesium hydroxide as a main material, adding a polymer binder and glass fibers to the slurry, and forming a slurry.

Hereinafter, the manufacturing process of the non-combustible sheet 3 in this embodiment will be described.

FIG. 3 is an explanatory view showing an outline of a manufacturing process of a non-combustible sheet constituting a non-combustible laminate sheet according to one embodiment of the present invention.

In the defibration step A, magnesium hydroxide as a main raw material, glass fiber, wood pulp and synthetic fiber as reinforcing materials are put into a defibrating machine and defibrated by stirring to disperse the fibers. Better. In addition, as an auxiliary material, for example, sepiolite may be added.

Next, in the raw material mixing step B, the defibrated paper stock, polymer binder, softener, stabilizer and the like are put into a mixing tank and mixed to produce a slurry. As the polymer binder used here, a thermosetting resin was used in order to satisfy the requirements of structural strength and water resistance, and further, a thermoplastic resin was used.

The slurry mixed in the raw material mixing step B is
In order to perform a coagulation treatment suitable for papermaking, convergence is performed by a convergence reaction device in processing step C. The slurry prepared in the processing step C is sent out to a stock tank, and enters a storage step D in which the mixed state is always kept uniform so that sedimentation or collapse of the prepared sheet does not occur.

Then, the slurry in the accumulation step D is pumped up by a constant-quantity pump to a constant-quantity hopper, and is guided to a papermaking step E.

In the paper making step E of this embodiment, paper was made using a round-mesh paper machine. At this time, the slurry concentration was 0.05
０．５0.5%, and the paper machine used a 60-80 mesh netting machine.

The wet sheet obtained by dewatering the slurry in the paper making step E is conveyed into a drying furnace in a drying step F, and is dried at a required temperature for a predetermined time to evaporate the internal moisture and react with the binder. Promotes drying and solidification.

Thus, the noncombustible sheet 3 having a paper thickness of 0.1 to 1.0 mm is completed. The non-combustible sheet 3 has high heat resistance, and can maintain a predetermined shape only by slight smoke and blackening even when a fire is approached.

As described above, the non-combustible laminate sheet of the above embodiment is composed of the aluminum foil 2, the non-combustible sheet 3, and the inorganic adhesive 4 for joining the aluminum foil 2 and the non-combustible sheet 3. .

Therefore, according to the above embodiment, when the laminate sheet 1 is bent, the non-combustible sheet 3
Holds its shape due to its viscoelastic force, whereas the conventional aluminum foil 2 was torn at a film thickness of about 20 μm,
The aluminum foil 2 is reinforced by a non-combustible sheet 3,
The laminate sheet 1 can maintain a predetermined shape as a whole. This makes it possible to perform various types of patterning and molding, and to impart aesthetic appeal.
Physical effects such as a buffering effect and a heat insulating effect by an air layer having irregularities can also be obtained.

The aluminum foil 2, the non-combustible sheet 3, and the inorganic adhesive 4 are all inorganic and non-combustible, so that they can be used in flammable places.

Further, since the shape of the non-combustible sheet 4 can be maintained even at a high temperature, the aluminum foil 2 is kept at about 600 ° C.
In this atmosphere, the non-combustible sheet 3 is prevented from melting and flowing out by the high temperature strength, and the overall shape of the laminated sheet 1 can be maintained. For this reason, aluminum foil 2
The operating temperature condition is relaxed, whereas the single use can be used only at a relatively low temperature.

In addition, since the laminated sheet 1 uses the inorganic adhesive 4 having high-temperature characteristics, it can be peeled off between the aluminum foil 2 and the non-combustible sheet 3 when exposed to high temperatures. Absent.

Due to these characteristics, the laminate sheet 1
Can be used for construction materials, furnace materials, and other structural materials that require heat resistance and nonflammability.

In the method of manufacturing a laminated sheet according to the above embodiment, a feeding step of feeding the aluminum foil 2 and the non-combustible sheet 3 to the pressure roller 15 respectively, and an inorganic adhesive 4 is applied to the aluminum foil 2. The coating process includes a coating process and a bonding process in which the fed aluminum foil 2 and the non-combustible sheet 3 are bonded by laminating and pressing after application of the inorganic adhesive 4.

Therefore, the laminated sheet 1 can be manufactured at low cost by a simple continuous process including the feeding process, the coating process, and the joining process.

By the way, the non-combustible sheet 3 of the above embodiment is used.
Uses natural fibrous magnesium hydroxide, but the present invention is not limited to this, and synthetic fibrous magnesium hydroxide may be used. Sepiolite may be added to fibrous magnesium hydroxide, and these may be used as a main component.

Further, in the above-described embodiment, the non-combustible sheet 3 is formed by forming a slurry containing magnesium hydroxide as a main component. However, the present invention is not limited to this. In addition, various inorganic agents suitable for the operating temperature can be selected and used as the inorganic adhesive 4.

In addition, in the above embodiment, the aluminum foil 2 is used as the metal foil. However, the present invention is not limited to this. For example, various metal foils such as a stainless steel foil and a copper foil are similarly used. be able to.

In the manufacturing method of the above embodiment, an example using a wet lamination processing method is shown. However, when the present invention is carried out, other thermal lamination, hot melt lamination, non-solvent lamination, It is also possible to use various processing methods such as dry lamination.

Further, although the laminate sheet 1 of the above embodiment has a two-layer structure of the aluminum foil 2 and the non-combustible sheet 3, the metal sheet and the non-combustible sheet 3 may be appropriately combined to have three or more layers. It is possible.

[0063]

According to the first aspect of the present invention , since the non-combustible laminate sheet is configured as described above, when the laminate sheet is bent, the non-combustible sheet retains its shape due to its viscoelastic force. A predetermined shape can be maintained. Further, since the metal foil, the non-combustible sheet, and the inorganic adhesive are all inorganic and non-combustible, they can be used in flammable places. Furthermore, since the shape of the non-combustible sheet can be maintained even at high temperatures, the shape of the laminated sheet as a whole can be maintained. In addition, since the laminated sheet uses an inorganic adhesive having high-temperature properties, it does not peel between the metal foil and the non-combustible sheet when exposed to high temperatures.

In particular, the non-combustible sheet may be replaced with a fibrous blue
Sulphate containing magnesium (magnesium hydroxide mineral) as the main material
The non-combustible sheet made by paper-making
Improves the solidification of the slurry and makes slurry preparation easier and easier.
It can be done smoothly. Therefore, papermaking from the slurry
Can easily form a non-combustible sheet.
In addition, the formed non-combustible sheet has sufficient shape retention.
As a result, even if the metal foil is relatively thick,
The sheet stably supports the metal foil and prevents the metal foil from breaking
To fold the non-combustible laminate sheet smoothly and easily.
Can be bent.

The non-combustible laminate sheet according to claim 2
Has the same effect as claim 1,
Water-soluble or antimony pentoxide
Water-dispersible inorganic adhesive secures metal foil and non-combustible sheet
Real, strong and stable joining, high incombustibility,
Exhibits fire.

The non-combustible laminate sheet according to claim 3
Is an auxiliary material in addition to the effect of claim 1 or 2.
Properties of non-combustible sheet and papermaking with some sepiolite
It has the effect of improving the performance.

The non-combustible laminate sheet according to claim 4
Has the same effect as in claim 1, and as a main material
The combination of brucite and sepiolite,
Demonstrate higher fire resistance and non-combustibility. Also, non-combustible sheet
Higher thermal stability, shape retention, and papermaking properties
Can be provided, and the manufacturing cost is kept low.
can do.

A non-combustible laminate sheet according to claim 5
Has the same effect as claim 4,
Water-soluble or antimony pentoxide
Water-dispersible inorganic adhesive secures metal foil and non-combustible sheet
Real, strong and stable joining, high incombustibility,
Exhibits fire.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a non-combustible laminate sheet according to one embodiment of the present invention.

FIG. 2 is a schematic process diagram showing a method for manufacturing a non-combustible laminate sheet according to one embodiment of the present invention.

FIG. 3 is an explanatory view schematically showing a manufacturing process of a non-combustible sheet constituting a non-combustible laminate sheet according to one embodiment of the present invention.

[Explanation of symbols]

2 Aluminum foil (metal foil) 3 Non-combustible sheet 4 Inorganic adhesive

──────────────────────────────────────────────────続 き Continuation of the front page (72) Kyoichi Fujimoto, inventor 65 metal complex, Kakamigahara City, Gifu Prefecture Tokiwa Denki Co., Ltd. (56) References JP-A-2-35145 (JP, A) (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) B32B 15/14 B32B 7/12 B32B 9/00 E04B 1/94

Claims (5)

(57) [Claims] 1. A metal foil and a slurry containing fibrous brucite as a main material are formed by papermaking.
A non-combustible sheet comprising: a non-combustible sheet; and an inorganic adhesive for joining the metal foil and the non-combustible sheet. 2. A metal foil and a slurry containing fibrous brucite as a main material are formed.
A non-combustible sheet, and a combination of potassium silicate and antimony pentoxide,
Water-soluble or water bonding the metal foil and the non-combustible sheet
Non-combustible characterized by comprising a dispersible inorganic adhesive
Laminated sheet. 3. A slurry for forming said non-combustible sheet.
Lee must also include sepiolite as an auxiliary material
The non-combustible laminate according to claim 1 or 2,
To 4. A metal foil and a fiber mainly composed of fibrous brucite and sepiolite.
A non-combustible sheet formed by rallying, and an inorganic adhesive bonding the metal foil and the non-combustible sheet.
A non-combustible laminate sheet comprising: 5. A metal foil and a fiber mainly composed of fibrous brucite and sepiolite.
Composed of a non-combustible sheet made of rally, potassium silicate and antimony pentoxide,
Water-soluble or water bonding the metal foil and the non-combustible sheet
Non-combustible characterized by comprising a dispersible inorganic adhesive
Laminated sheet.