KR102188303B1 - Manufacturing method of laminated interior material for construction and automobile and its laminated interior material - Google Patents

Abstract

The present invention relates to a laminated interior material for construction and automobiles used to finish and decorate the interior of a building, a small ship, an automobile, etc. and, more specifically, to a laminated interior material for construction and automobiles, which is lightweight, has excellent soundproofing, heat insulation, and heat resistance, is not deformed even if used for a long period of time, and can maintain a deformed shape if deformed into a shape to be installed. A manufacturing method of the laminated interior material for construction and automobiles forms an adhesive mixture layer on one surface of a metal film material by mixing water, glass, and a metallic adhesive, laminates a woven fabric layer for improving sound-absorbing efficiency and flame-retardant efficiency on the adhesive mixture layer, and attaches and installs a flame-retardant sheet obtained by sequentially laminating an adhesive and nonwoven fabric on an upper portion of the fabric layer on both sides of a base material obtained by foaming a synthetic resin material.

Description

Manufacturing method of laminated interior material for construction and automobile and its laminated interior material

The present invention relates to a laminated interior material for buildings and automobiles used to finish and decorate the interior of automobiles, small ships, and buildings, and in more detail, it has a small load and is excellent in sound insulation, heat insulation, heat resistance, and does not deform even when used for a long period of time. It relates to a laminated interior material for buildings and automobiles capable of maintaining the modified shape when transformed into a desired shape.

In general, sound-absorbing materials, finishing materials, or interior materials are used in a wide variety of places, from indoors and outdoors of buildings to indoor ceilings of automobiles. This conventional finishing material manufacturing process is as follows. As shown in Fig. 7, the polyurethane foam 10 that is longer than the length required for manufacturing the interior finishing material is transferred according to the driving of the transfer conveyor 20. In addition, four rolls (1, 2, 3, 4, 5, 6, 7, 8) are provided on the upper and lower surfaces of the polyurethane foam 10, respectively. These rolls (1, 2, 3, 4, 5, 6, 7, 8) sequentially from the inside, respectively, the non-woven fabric 30, the first resin film 31, the glass mat 32, and the second resin film ( 33) is guided and transferred to be located on the upper and lower surfaces of the polyurethane foam 10 that is transferred from the corresponding position.

That is, the first resin film 31 and the second resin wound on each roll (1,2,3,4,5,6,7,8) for bonding and laminating one side of the primary polyurethane foam 10 The resin film 33, the glass mat 32, and the non-woven fabric 30 are transferred in the same direction to load the polyurethane foam 10 and are positioned between the press 40 and the heat chamber 50.

The heat chamber 50 and the press 40 heat-compress the polyurethane foam 10 and the glass mat 32 and the nonwoven fabric 30 by raising and lowering when the polyurethane foam 10 is positioned therebetween. Let it. At this time, according to the intention of the manufacturer, only the press 40 or the heat chamber 50 may be configured to be raised or lowered, and both the press 40 and the heat chamber 50 may be configured to be raised or lowered. Alternatively, thermocompression bonding may be performed by setting the distance between the heat chamber 50 and the press 40 to a predetermined predetermined distance and guiding the laminate into the gap.

Since the non-woven fabric plate produced by pressing the short organic polymer fibers has excellent sound-absorbing properties, it is actively used as interior and exterior materials for buildings and boards for partitions. For example, in Korean Patent Publication No. 87-5764, fibrous polypropylene is crushed finely, and chemical fibers such as acrylic, polyester, and nylon are cut to about 10 mm, and a web made by putting in a carding machine is fixed in a heating room. After heating for a period of time, a chemical fiber plate is cut and compression molded into a pressure plate. However, there is a problem in that the chemical fiber sheet material is easily broken due to less entanglement between the short fibers by cutting the chemical fiber into short fibers of about 10 mm.

In Korean Patent Publication No. 95-6863, waste chemicals are cut into long fibers of about 50 to 100 mm, and the cotton is made into cotton by tying them on a cotton machine. After making them into mats of a certain thickness, they are laminated in layers of appropriate thickness to form fibers. Disclosed is a method of manufacturing a chemical fiber plate material by heating and pressing at high temperature and high pressure so that threads are integrated with each other. However, since the chemical fiber sheet manufactured by this method is molded at high temperature and high pressure, it causes decomposition of the polymer material, which is a fibrous material, and there is a problem in that the inherent characteristics of the fiber are lost.

Korean Laid-Open Patent Publication No. 2001-0084426 is a polyester non-woven sheet made of a mixture of 50% by weight or more of high melting point polyester fibers and 50% by weight or less of low melting point polyester fibers having a melting point of 50° C. or higher than that of the high melting point polyester fiber. Is initiating. However, the polyester nonwoven fabric plate produced by this method has excellent sound absorption effect, but low sound insulation effect, leaving room for improvement in terms of sound insulation effect.

Korean Laid-Open Patent Publication No. 2001-0107523 discloses that a work piece, which is a soft or low-density nonwoven sheet containing heat-sealable fibers, is put into a heating plate type hot press and heated and compressed, but is not fused to the heating plate at the operating temperature of the heating plate type hot press. The non-woven fabric or woven fabric is heated and compressed to form a high-density non-woven fabric plate while covering at least the surface and back of the workpiece perpendicular to the compression direction of the heating plate, and then discharged from a hot press to cover the non-woven fabric or woven fabric. Disclosed is a method of manufacturing a high-density non-woven fabric plate comprising the step of cooling at. However, this method can produce a high-density nonwoven fabric plate having excellent quality uniformity through a simple manufacturing equipment and process, but the nonwoven fabric plate produced by this also has excellent sound absorption effect, but the sound insulation effect is low, so the sound insulation effect is not sufficient.

As described above, when such a non-woven sheet is used for interior construction materials, it must have flame retardancy of more than a certain standard in addition to sound-absorbing properties and sound-insulating properties. In particular, in the case of the United States, in order to sell such non-woven sheet materials for interior use in buildings, flame spread test and smoke development test according to ASTM (American Society for Testing and Materials) E84. When you do, you must satisfy the A grade (the best grade). The following are mentioned as an attempt to impart flame retardancy to the nonwoven fabric plate.

Korean Laid-Open Patent Publication No. 2002-0014032 discloses a flame-retardant polyester nonwoven fabric plate in which a flame retardant paint is coated on the surface of the polyester nonwoven fabric plate. The non-woven fabric plate manufactured by this method has excellent flame retardancy and can exhibit self-extinguishing properties that are extinguished when the flame is removed even in the event of a fire.However, when applied as a building interior material or as a partition plate, it still achieves sound insulation effect only by the sound-absorbing mechanism and sound insulation effect There is a lot of room for improvement in terms of sound insulation effect as it cannot be used. As another method for imparting flame retardancy to the nonwoven sheet material, there is a method of manufacturing a nonwoven sheet material using fibers to which a flame retardant is added, or a method of treating the nonwoven sheet material with a flame retardant composition. For example, in the case of a polyester nonwoven sheet, a method of manufacturing a nonwoven sheet using polyester fibers to which a flame retardant compound such as octabromo biphenyl, hexabromobiphenyl amine, and tetrabromo-bisphenol A is added, or poly Treatment of a non-woven sheet made of ester fiber with a liquid composition containing a flame retardant compound such as 2-(2,4,6,-tribromophenoxy) phenol, tris(2,3-dibromopropyl) phosphate, etc. And how to do it. However, when flame retardant treatment is performed using a flame retardant as described above, there is a problem in that the sound-absorbing properties are lowered rather than before treatment, in addition to a significant increase in production cost.

In order to solve the above-described conventional problems, a non-woven fabric composite plate for building interior materials with excellent flame retardancy, sound-absorbing and sound-insulating properties has been proposed in Republic of Korea Utility Model Registration No. 421094. The metal film is a structure in which a metal film is bonded. When an aluminum thin film is installed on only one side, the metal film layer is attached to the wall or ceiling, and the woven or nonwoven fabric layer is used in an arrangement state that is exposed indoors.

However, by adding an aluminum film, which is a metal film layer, on both sides of the woven or nonwoven fabric layer, it is possible to improve flame retardancy without causing any external damage.

However, the melting temperature of aluminum is about 660℃ when the nonwoven fabric composite plate for building interior materials is heated to 1,200~1,400℃, and the melting temperature of the woven or nonwoven fabric laminated therein is melted at about 160~200℃. As shown in 5a, there is a problem in that the flame retardant efficiency is lowered by burning through the front and back, and the woven or non-woven fabric is bonded to the metal film layer because a general adhesive is used, so that adhesion is not well performed and there is a problem of peeling.

On the other hand, when a conventional nonwoven composite plate for building interior materials is applied to and used in a vehicle, there is a problem that it is difficult to maintain its shape because it is flexible and has low strength, and there is a problem that sound absorption efficiency and fire resistance are deteriorated, so that it cannot be used for automotive interior materials.

Republic of Korea Patent Publication No. 2002-001403 Republic of Korea Patent Publication No. 2001-0107523 Korean Patent Publication No. 95-6863 Republic of Korea Patent Registration No. 0151629

The object of the present invention, conceived to solve the above-described conventional problems, is to prevent the occurrence of toxic gases in the event of a fire by using metal films and water glass on both sides of a substrate made of polyurethane foam to prevent environmental pollution and human injury caused by it. It is also to provide laminated interior materials for construction and automobiles with excellent flame retardant properties.

Another object of the present invention is to exhibit sound-absorbing properties as well as sound-insulating properties by using a metal film and a woven or non-woven fabric, so that not only has excellent soundproofing effect, but also improves formability by heating and pressurization, improves flame retardancy, and has excellent mechanical properties. In providing a sieve.

The object of the present invention is to form an adhesive mixture layer formed by mixing water glass and a metal adhesive on one surface of a metal film material, and to improve sound absorption efficiency and flame retardant efficiency in the adhesive mixture layer in the method of manufacturing a laminated interior material for construction and automobiles. Manufacturing of laminated interior materials for construction and automobiles, characterized in that a woven fabric layer is laminated and a flame-retardant sheet in which an adhesive and a non-woven fabric are sequentially laminated on top of the fabric layer is attached to both sides of a substrate formed by foaming with a synthetic resin material. Achieved by means of a method.

In another manufacturing method of the present invention, in the manufacturing method of laminated interior materials for buildings and automobiles, an adhesive mixture layer formed by mixing water glass and a metal adhesive is formed on one side of a metal film material, and sound absorption efficiency and flame retardant efficiency are improved in the adhesive mixture layer. A first preparation step of preparing a first composite member by laminating the improved woven fabric layer; A second preparation step of preparing a second composite layer having an adhesive layer on one side of the nonwoven fabric; A laminating process of laminating the first composite member and the second composite layer to manufacture a flame retardant sheet; It is achieved by a method of manufacturing a laminated interior material for construction and automobiles, characterized in that the flame-retardant sheet is manufactured by a finishing process of attaching and bonding to both sides of a substrate made of a synthetic resin material.

It is achieved by a method of manufacturing a laminated interior material for construction and automobiles, characterized in that the metal film material is further attached to both sides of the fabric layer.

The substrate is achieved by a method of manufacturing a laminated interior material for construction and automobiles, characterized in that it is a foamed foam material.

The implementation of the method of the present invention is to form an adhesive mixture layer formed by mixing water glass and a metal adhesive on one surface of a metal film material in a laminated interior material for construction and automobiles, and to improve sound absorption efficiency and flame retardant efficiency in the adhesive mixture layer. By laminating a woven fabric layer and attaching and installing a flame-retardant sheet in which an adhesive layer and a non-woven fabric are sequentially laminated on top of the fabric layer and attached to both sides of a substrate formed by foaming with a synthetic resin material. Is achieved.

It is achieved by a laminated interior material for construction and automobiles, characterized in that a metal film material is further attached between the fabric layer and the nonwoven fabric.

The metal film material is achieved by a laminated interior material for construction and automobiles, characterized in that aluminum.

It is achieved by a laminated interior material for construction and automobiles, characterized in that the inorganic powder is scattered on the woven fabric.

The substrate is achieved by a laminated interior material for construction and automobiles, characterized in that the foamed foam material.

The fabric layer is achieved by a laminated interior material for construction and automobiles, characterized in that it is any one of a glass fiber woven fabric, a Teflon woven fabric, and a Kevlar woven fabric.

The metal adhesive is achieved by a laminated interior material for construction and automobile, characterized in that any one of epoxy, acrylic, and polyurethane.

The interior material laminate of the present invention uses a metal film and water glass on both sides of a substrate made of polyurethane foam to suppress the generation of toxic gases in the event of a fire, thereby preventing environmental pollution and preventing human damage caused by it. It is a very useful invention that not only has sound-absorbing properties but also sound-insulating properties by using a woven or non-woven fabric, which not only has excellent sound insulation effects, but also improves moldability by heating and pressurization, and improves flame retardancy and mechanical properties.

1 is a process chart showing a method of manufacturing a laminated interior material for construction and automobiles according to the present invention.
Figure 2 is an embodiment showing another manufacturing method of the present invention.
3 is a cross-sectional view showing the structure of the laminated interior material manufactured by the present inventors manufacturing method of the interior laminated material for construction and automobiles.
Figure 4 is a cross-sectional view showing another structure of the present inventors laminated interior material.
Figure 5a is a photograph showing a state when a general laminated interior material is heated.
Figure 5b is a photograph showing a state when the present inventors laminated interior material is heated.
Figure 6 is a photograph showing the state of use of the inventors laminated interior material.
Figure 7 is an embodiment showing a method of manufacturing a conventional finishing material.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a process chart showing a method of manufacturing a laminated interior material for buildings and automobiles according to the present invention. The manufacturing method of a laminated interior material for building and automobiles according to the present invention is made by mixing water glass and a metal adhesive in a metal film material 10. A first preparation step (S100) is performed by forming an adhesive mixture layer 20 and laminating a woven fabric layer 30 for improving sound absorption efficiency and flame retardant efficiency on the adhesive mixture layer 20.

The metal used for the metal film material 10 is preferably an aluminum thin film, and a thickness of 6 to 50 μm is used. The reason for using the aluminum thin film is to protect it from fire and block heat transfer, and also to prevent it from being restored to its original state by elasticity while maintaining its shape during molding.

The adhesive mixture layer 20 is prepared by mixing water glass and a metal adhesive, but 5 to 15% by weight when the total amount of the mixed amount of the water glass and the metal adhesive is 100 for the MC-series filler to facilitate mixing of the water glass and the metal adhesive. Use. If the MC-series filler is used in an amount of 5% by weight or less, mixing is not performed, and when 15% by weight or more is used, the concentration of the water glass decreases.

The mixing ratio of the water glass and the metal adhesive is preferably 50 to 80% by weight of the water glass and 50 to 20% by weight of the metal adhesive. Here, when the metal adhesive is 50% by weight or more, there is a problem that too much harmful gas is generated when a fire occurs, and when it is 20% by weight or less, there is a problem that the adhesive strength is lowered. The water glass has an effect of improving heat resistance and an effect of improving the bonding strength of bonding fabrics and metals.

Meanwhile, the fabric layer 30 uses a woven fabric made of glass fibers, and a non-woven fabric cannot be used. The reason is that the fabric layer is used to improve heat resistance and prevent air permeation, and the non-woven fabric has irregular pores, which causes irregular air permeation.

In addition, since the fabric layer 30 is regularly woven, it exhibits an even distribution load, and the deformation occurs regularly compared to the nonwoven fabric, and the heat transmittance is regularly transmitted, whereas the nonwoven fabric itself has an irregular structure, so the deformation occurs irregularly and the heat transmittance. This is because non-woven fabrics have a problem in which the heat-blocking effect that blocks heat in case of fire is unevenly generated because it is transmitted irregularly.

The fabric layer 30 is made of any one of a glass fiber woven fabric, a Teflon woven fabric, and a Kevlar woven fabric, and the metal adhesive for forming the adhesive mixture layer 20 is epoxy, acrylic, or polyurethane. use.

When forming the fabric layer 30, the inorganic powder in the form of powder may be dispersed and used. The inorganic powder may be ceramic powder, ilartite powder, carbon powder, diatomaceous earth powder, or a mixture of two or more of them. This is because the inorganic powder in the form of a powder can obtain an effect of inhibiting the extinguishing of each material during carbonization in the event of a fire and an effect of blocking heat transfer.

Meanwhile, after performing the first preparation process (S100), the second preparation process (S200) of sequentially applying the adhesive 40 to the fabric layer 30 and then laminating the nonwoven fabric 50 is performed to manufacture a flame-retardant sheet (C). do. As the adhesive 40, a PE-based hot melt powder, a hot melt film, or an MDI-based liquid adhesive is used. Adhesive Water-soluble acrylic adhesive is not suitable for use because it is weak to moisture and causes peeling during summer.

The hot melt powder may be used by spraying with the nonwoven fabric 50 as fine particles or spraying on one side of the nonwoven fabric after manufacturing the nonwoven fabric 50, and the heat fusion film is a processed thin resin material. When using the heat-sealing film, it is attached to one side of the nonwoven fabric 50.

The non-woven fabric 50 has the effect of using as a corresponding member while holding the contraction and expansion of the foam material to which the sheet is attached. That is, when the unexplained substrate is deformed according to temperature changes in winter and summer, it is deformed with respect to the amount of deformation of the substrate, thereby improving response power to prevent deformation of the product.

This is because when the nonwoven fabric 50 is a sheet, a film, or a woven fabric, there is a disadvantage that it cannot respond to the amount of deformation of the substrate, and the nonwoven fabric 50 and the adhesive 40 laminated on the fabric layer 30 are not shown in the heating means. As a result, heat is transferred and the adhesive 40 is melted. At this time, the non-woven fabric 50 and the fabric layer 30 are bonded. After that, the fabric layer 30 and the non-woven fabric 50 are pressed through a press or rolling mill. Depending on the process, heating and pressing may be performed simultaneously.

Meanwhile, FIG. 2 is an exemplary process diagram showing another manufacturing method of the present invention. According to this, an adhesive mixture layer 20 made of a mixture of water glass and a metal adhesive is formed on the metal film material 10, and the adhesive mixture layer 20 is absorbed. A first preparation step (S100) of preparing the first composite member (A) by stacking a woven fabric layer that improves efficiency and flame retardant efficiency is performed.

In addition, after separately performing a second preparation step (S200) of preparing a second composite member (B) having an adhesive 40 on one side of the nonwoven fabric 50, the first composite member (A) and the second composite member ( The flame-retardant sheet (C) may be manufactured by the laminating process (S300) of laminating B), and as an alternative method, a flame-retardant sheet (C) with only the non-woven fabric without an adhesive applied alone is used as the non-woven fabric 50 alone. It can also be manufactured.

In the present invention, the method of manufacturing the flame-retardant sheet (C) may be manufactured at one time in one production line as shown in FIG. 1, but as shown in FIG. 2, the first preparation process (S100) and the second preparation process (S200) ) Can also be performed separately and produced using a method of laminating.

Meanwhile, as shown in FIG. 4 of the accompanying drawings, one more metal film material layer 10 may be attached to both sides of the fabric layer 30 to be used. As described above, a finishing process (S400) of attaching the flame-retardant sheet (C) to the substrate 60 after manufacture is performed.

The attachment method of the base material and the flame-retardant sheet (C) can be used either by using an adhesive or by heating, and the base material 60 is manufactured by foaming a synthetic resin material, and the thickness is adjusted by pressing Both can be used.

The structure of the laminated interior material for buildings and automobiles of the present invention manufactured by the above manufacturing method is an adhesive mixture layer 20 formed by mixing water glass and a metal adhesive in a metal film material 10 as shown in FIG. 3 of the accompanying drawings. And laminated a fabric layer 30 woven of glass fiber to improve sound absorption efficiency and flame retardant efficiency on the adhesive mixture layer 20, and an adhesive 40 and a nonwoven fabric 50 on the upper portion of the fabric layer 30 A flame-retardant sheet (C) is prepared by sequentially stacking.

The flame-retardant sheet (C) may be used either with or without an adhesive applied to the nonwoven fabric 50. At this time, one more metal film material 10 may be attached and installed between the fabric layer 30 and the nonwoven fabric 50. When the metal film material 10 made of aluminum film was attached to both sides of the fabric layer 30 and heated, the conventional laminated interior material penetrated through the conventional sheet as shown in FIG. 5A. As shown in 5b, it was confirmed that the laminated interior material of the present invention slightly deformed only the directly heated surface.

The metal film material 10 made of the aluminum material, the adhesive mixture layer 20 made of a mixture of water glass and a metal adhesive, and the fabric layer 30 made of glass fiber have a melting point of 600 to 800°C when heated, so heat resistance is increased. This is because you can get the effect of being.

On the other hand, it may be used by forming an embossing on the metal film material 10 installed on the surface side. The embossing has an effect of blocking and preventing heat transfer by forming an air pocket.

In addition, nano-sized micropores may be formed in the flame-retardant sheet (C) adhered to both sides before the foamed foam is cooled and cured when the foam is manufactured by drilling fine holes in the embossing. The micropores are for discharging the gas generated in the foam.

The use of laminated interior materials for construction and automobiles according to the present invention manufactured as described above may be used as insulation of automobiles as shown in FIG. 6 of the accompanying drawings. This can be confirmed that it can be conveniently used for products with excessive bending.

The interior material laminate of the present invention uses a metal film and water glass on both sides of a substrate made of polyurethane foam to suppress the generation of toxic gases in the event of a fire, thereby preventing environmental pollution and preventing human damage caused by it. It is a very useful invention that not only has sound-absorbing properties but also sound-insulating properties by using a woven or non-woven fabric, which not only has excellent sound insulation effects, but also improves moldability by heating and pressurization, and improves flame retardancy and mechanical properties.

10: metal film material 20: adhesive mixture layer
30: fabric layer 40: adhesive
50: nonwoven fabric 60: base material
S100: 1st preparation process S200: 2nd preparation process
S300: Laminating process S400: Finishing process

Claims (12)

delete In the manufacturing method of the laminated interior material for construction and automobile,
The first preparation process of preparing a first composite member by forming an adhesive mixture layer made of a mixture of water glass and a metal adhesive on one side of a metal film material, and laminating a woven fabric layer that improves sound absorption efficiency and flame retardant efficiency on the adhesive mixture layer and;
A second preparation step of preparing a second composite layer provided with an adhesive on one side of the nonwoven fabric;
A laminating process of laminating the first composite member and the second composite layer to manufacture a flame retardant sheet;
It consists of a finishing process of attaching and bonding the flame-retardant sheet to both sides of a substrate made of a foamed foam material formed by foaming a synthetic resin material,
The fabric layer of the first preparation process is made by further attaching metal film materials on both sides,
The metal film material is aluminum,
The fabric layer is made by scattering inorganic powder,
The metal film material forms an adhesive mixture layer made of a mixture of water glass and a metal adhesive on one side, and a woven fabric layer that improves sound absorption efficiency and flame retardant efficiency is laminated on the adhesive mixture layer, and an adhesive and a non-woven fabric are formed on the upper part of the fabric layer. It is made by attaching and installing the sequentially laminated flame-retardant sheets on both sides of the base material formed by foaming with a synthetic resin material,
The adhesive mixture layer is prepared by mixing water glass and metal adhesive, but to facilitate mixing of water glass and metal adhesive, 5 to 15% by weight is used when the total amount of mixing of the water glass and metal adhesive is 100 for the MC-series filler. , The mixing ratio of the water glass and the metal adhesive is 50 to 80% by weight of the water glass, and the metal adhesive is mixed at a weight ratio of 50 to 20% by weight.
delete delete In laminated interior materials for construction and automobiles,
The first preparation process of preparing a first composite member by forming an adhesive mixture layer made of a mixture of water glass and a metal adhesive on one side of a metal film material, and laminating a woven fabric layer that improves sound absorption efficiency and flame retardant efficiency on the adhesive mixture layer and;
A second preparation step of preparing a second composite layer provided with an adhesive on one side of the nonwoven fabric;
A laminating process of laminating the first composite member and the second composite layer to manufacture a flame retardant sheet;
It is manufactured by a finishing process of attaching and installing the flame-retardant sheet to both sides of a substrate made of a foamed foam material by foaming a synthetic resin material,
The fabric layer of the first preparation process is made by further attaching metal film materials on both sides,
An adhesive mixture layer formed by mixing water glass and a metal adhesive is formed on one side of the metal film material, and a woven fabric layer that improves sound absorption efficiency and flame retardant efficiency is laminated on the adhesive mixture layer, and an adhesive and a non-woven fabric are sequentially placed on the top of the fabric layer. It is made by attaching and installing the laminated flame-retardant sheet on both sides of the base material formed by foaming with a synthetic resin material,
The adhesive mixture layer is prepared by mixing water glass and metal adhesive, but to facilitate mixing of water glass and metal adhesive, 5 to 15% by weight is used when the total amount of mixing of the water glass and metal adhesive is 100 for the MC-series filler. , The mixing ratio of the water glass and the metal adhesive is 50 to 80% by weight of the water glass, and the metal adhesive is mixed at a weight ratio of 50 to 20% by weight.
delete delete delete delete delete The method of claim 5,
The fabric layer is a laminated interior material for construction and automobiles, characterized in that any one of a glass fiber woven fabric, a Teflon woven fabric, and a Kevlar woven fabric.
The method of claim 5,
The metal adhesive is a laminate interior material for construction and automobiles, characterized in that any one of epoxy, acrylic, and polyurethane.

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