KR102290195B1 - A manufacturing method of hollow type light weight insulation block for wall of housing and the hollow type light weight insulation block for wall of housing manufactured by the same - Google Patents

Abstract

The present invention is a method for manufacturing a hollow lightweight insulation block for a building wall that can easily form a hollow without damage or cracks, and can secure sufficient strength to maintain such a hollow, and a hollow lightweight insulation for a building wall manufactured therefrom It's about blocks.
The present invention relates to a formwork made of stainless steel, and a center core bar and a side core bar that can be mounted and detached inside the formwork and are mounted inside the formwork to form a hollow part of a hollow lightweight insulation block for a building wall. and a core mounting step of inserting a center core rod and a side core rod into the upper opening of the form to mount the core in the formwork; The light insulation slurry composition injection step of injecting the lightweight insulation slurry composition, the steps of curing the lightweight insulation slurry composition, removing the center core rod by lifting it vertically upward, and removing the core to dismantle the form together with the side core rod and It provides a method for manufacturing a hollow lightweight insulation block for a building wall, including the step of dismantling the formwork.

Description

A manufacturing method of hollow type light weight insulation block for wall of housing and the hollow type light weight insulation block for wall of housing manufactured by the same}

The present invention is a method for manufacturing a hollow lightweight insulation block for a building wall that can easily form a hollow without damage or cracks, and can secure sufficient strength to maintain such a hollow, and a hollow lightweight insulation for a building wall manufactured therefrom It's about blocks.

Conventional types of walls used inside and outside buildings include masonry walls that form walls by stacking concrete or cement blocks, concrete extrusion-molded walls manufactured by extruding, molding and hardening concrete, or manufactured by attaching several gypsum boards Gypsum board walls were used.

Although the material cost of the block-type masonry wall is low, the labor cost is considerably higher than that of other materials, and a lot of waste is produced. However, since there is no other alternative method, it is used relatively widely, but there is a problem that the weight of cement or concrete blocks is large, which puts a lot of load on the building structure. There is a problem in that a large load is placed on the building structure due to its weight.

On the other hand, gypsum board walls have the advantages of being similar in price to other walls, not heavy, easy to install, and fast on-site work. It has the disadvantages of weak strength, easy breakage, and vulnerability to impact, moisture, and sound insulation.

In order to improve the above problems, a lot of panels using lightweight concrete have been recently constructed, for example, "Lightweight concrete and manufacturing method thereof" of Korean Patent Laid-Open No. 10-2004-0017144, or Republic of Korea Utility Model No. 20 Although the composition of a wall panel structure such as "Lightweight panel for interior and exterior of buildings" of -0338305 has been disclosed, it is still heavy, and there are many difficulties and problems in insulation, sound insulation, moisture, and construction.

In addition, after the wall is constructed, a wide groove must be dug in the wall of the lightweight concrete panel in order to find a conduit buried deep inside the wall, draw out the electric wire, etc. After fixing the device, the groove around the device should be filled with urethane toothpaste or cement mortar.

In order to paint or paint the filled surface, there was a problem that the surface became rough and the aesthetics deteriorated as a number of operations were performed, such as resin plastering.

In order to solve this problem, Korean Patent Registration No. 10-1211702 tried to form a hollow in a conventional lightweight concrete panel, but in this technology, the core rod for hollow formation and the lightweight concrete slurry are hardened together in the process of forming the hollow. There was a disadvantage in that the core rod was not removed, or the lightweight concrete panel was damaged or cracked, making it difficult to blow molding.

Therefore, it is possible to easily form a hollow without damage or cracks, thereby reducing the weight of the wall surface due to weight reduction, and cables such as wires, telephone lines, antenna lines, communication lines, etc., pipes such as water pipes, air conditioner refrigerant pipes, etc. can easily pass through There is a need to develop a method for manufacturing a hollow lightweight insulation block for a building wall, which has excellent constructability and can secure sufficient strength to maintain such a hollowness.

Republic of Korea Patent Publication No. 10-2004-0017144 Republic of Korea Registered Utility Model No. 20-0338305 Republic of Korea Patent Registration No. 10-1211702

In order to solve the problems of the prior art as described above, an object of the present invention is to easily form a hollow without damage or cracks, and a hollow lightweight insulating block for a building wall that can secure sufficient strength to maintain such a hollow An object of the present invention is to provide a method for manufacturing and a hollow lightweight insulating block for a building wall manufactured therefrom.

In order to achieve the above object, the method for manufacturing a hollow lightweight insulating block for a building wall provided in the present invention has the following characteristics.

The manufacturing method of the hollow lightweight insulation block for the building wall includes a stainless steel formwork and a center that can be mounted and detached inside the formwork and is mounted inside the formwork to form a hollow part of the hollow light insulation block for a building wall. A core mounting step comprising a core composed of a core rod and a side core rod, inserting a center core rod and a side core rod into the upper opening of the formwork, and mounting the core in the formwork; A light insulation slurry composition injection step of injecting a lightweight insulation slurry composition containing water, a curing agent, and a foaming agent, curing the lightweight insulation slurry composition, and removing the center core rod by lifting the center core rod vertically upward, and side cores A method for manufacturing a hollow lightweight insulation block for a building wall comprising the steps of removing the core and dismantling the formwork together with the rod, in particular, the center core rod has a center and a sponge-type polyurethane, acrylic foamed around the surface of the center An elastic cushion layer manufactured using at least one material selected from the group consisting of resin, polypropylene, EPDM (Ethylene Prophlene Diene Monomer), EVA (Ethylene vinyl acetate), silicone, and mixtures thereof, and the elastic cushion layer It is characterized by including an outermost protective film layer surrounding the surface.

Here, the outermost protective film layer of the center core rod has a thickness of 30 to 120 μm, a propylene homopolymer, a copolymer of propylene and α-olefin having a propylene content of 60 to 99% by weight, and an ethylene content of 10 to 70 It may include a resin selected from the group consisting of a weight % copolymer of ethylene and α-olefin, and mixtures thereof.

In addition, the lightweight insulating slurry composition contains 40 to 80 parts by weight of water, 1 to 10 parts by weight of a curing agent, and 0.1 to 0.8 parts by weight of a foaming agent, based on 100 parts by weight of cement, and the curing agent is 15 to 25% by weight of gypsum, alumina 15 to 25 wt% of cement, 10 to 20 wt% of CSA (Calcium Sulfur Aluminate), 10 to 20 wt% of aluminum oxide, 5 to 15 wt% of magnesium hydroxide, and quicklime (CaO) or slaked lime (Ca(OH) ₂ ) 1 to 10% by weight of the foaming agent, palm oil 15 to 25% by weight, higher alcohol derivative lactic acid ester 5 to 10% by weight, nonionic surfactant 7 to 15% by weight, sodium carbonate 3 to 8% by weight, cocoamide, coco It is characterized in that it contains 0.5 to 3% by weight of one or more cocoamide-type foam stabilizers selected from the group consisting of amino acid salts, polyethylene glycol, and mixtures thereof and the remainder of water.

On the other hand, the present invention provides a hollow lightweight insulation block for a building wall, characterized in that manufactured by the manufacturing method of the hollow lightweight insulation block for the building wall.

The method for manufacturing a hollow lightweight insulation block for a building wall according to an embodiment of the present invention has an effect that the hollow lightweight insulation block for a building wall can easily form a hollow without damage or cracks.

In addition, the hollow lightweight insulation block for a building wall manufactured by the method for manufacturing a hollow lightweight insulation block for a building wall according to an embodiment of the present invention can reduce the weight of the wall due to weight reduction, and a wire, a telephone line, an antenna wire , communication lines, etc., and pipes such as water pipes, air conditioner refrigerant pipes, etc., can easily pass through, so that the workability is excellent.

In addition, the hollow lightweight insulation block for the building wall has the effect of securing sufficient strength to maintain the hollow.

1 is a schematic view showing a method of manufacturing a hollow lightweight insulation block for a building wall according to an embodiment of the present invention;
Figure 2 is a cross-sectional view showing the arrangement relationship of the formwork and the core used in the manufacturing method of the hollow lightweight insulation block for a building wall according to an embodiment of the present invention;
3 and 4 are perspective views illustrating a center core rod of a core used in a method of manufacturing a hollow lightweight insulation block for a building wall according to an embodiment of the present invention;
5 and 6 are perspective views showing a formwork used in a method for manufacturing a hollow lightweight insulating block for a building wall according to an embodiment of the present invention;
7 and 8 are perspective views illustrating a state in which a vacuum pump is connected to a core used in a method for manufacturing a hollow lightweight insulating block for a building wall according to an embodiment of the present invention;

Hereinafter, preferred embodiments according to the present invention will be described in detail. However, the following examples are provided so that those of ordinary skill in the art can fully understand the present invention and can be modified in various other forms, and the scope of the present invention is limited to the examples described below. it is not

The present invention relates to a formwork (10) made of stainless steel and a hollow part (11a. 11b) having a core 14 composed of a center core rod 12 and a side core rod 13, and a center core rod 12 and a side core rod 13 as an upper opening of the formwork 10 ) by inserting a core mounting step of mounting the core 14 inside the mold 10, and a lightweight insulating slurry containing cement, water, hardener and foaming agent in the mold 10 on which the core 14 is mounted. The light insulation slurry composition injection step of injecting the composition 101, the step of curing the lightweight insulation slurry composition, the center core rod 12 is removed vertically upward, and the side core rod 13 is together with the It includes the steps of removing the core and dismantling the formwork for dismantling the formwork 20 .

The schematic process of the manufacturing method of such a hollow lightweight insulating block for a building wall is shown in FIG. 1 .

And, Fig. 2 shows the arrangement relationship of the formwork 10 and the core 14 used in the method of manufacturing a hollow lightweight insulation block for a building wall according to an embodiment of the present invention, and in Figs. 5 and 6, the present invention Shows the formwork used in the manufacturing method of the hollow lightweight insulation block for the building wall according to an embodiment of the.

The formwork 10 may be formed in the form of a square box with an open upper part, and the formwork 10 is assembled while being fastened to each other by fitting, and it is composed of a bottom plate and two "L"-shaped walls that can be disassembled. can

In addition, a hole 16a is formed through the center of the bottom plate of the formwork 10, and at this time, the hole 16a has the lower end of the core 14, substantially the center core rod 12 of the core 14. The lower end of the central portion (12a) of the can be fitted.

Accordingly, the core 14 can be fixedly installed while taking an upright posture inside the form 10 by using the lower end of the central portion 12a fitted into the hole 16a of the form 10 . .

Of course, in the case of the central portion 12a fitted in the hole 16a of the form 10, if it is pulled while applying a force upward, it can be easily removed from the hole 16a.

In addition, the side core rods 13 installed in the interior of the formwork 10 are in close contact with the inner surfaces of both walls facing each other of the formwork 10 in a vertical posture. It is possible to be integrally fixed to the wall side by means of nails, and these side core rods 13 can be separated from the hollow lightweight insulation block 100 for the building wall together with the formwork when the formwork is dismantled.

The core 14 is for forming hollow portions 11a and 11b in the light insulation block, and includes a center core rod 12 of a circular cross section for forming a hollow portion 11a in the center of the light insulation block and light insulation. It consists of two side core rods 12 of semicircular cross section for forming hollow portions 11b at both edges of the block.

The core 14 composed of the center core rod 12 and the side core rod 13 is mounted on the inside of the mold 10, and the lightweight insulation slurry composition is installed inside the mold 10 on which the core 14 is disposed. After this injection and hardening, these cores 14, particularly the center core rod 12, should be able to be removed easily.

Here, since the side core bar 13 is removed outwardly together with the formwork when the formwork 10 is dismantled, there is no major problem related to the removal operation in the case of the side core bar 13 .

However, since the lightweight insulating slurry composition 101 has a property of expanding in volume and generating heat while curing, according to the prior art, as the lightweight insulating slurry composition 101 is cured, it is excessively tightly coupled to the core, It could not be removed, or even if the core was removed, there was a problem in that the hardened lightweight insulating block was partially dropped or damaged in the process of removing the core.

In particular, when the size of the hollow portion is large or a plurality of hollow portions must be formed, that is, when the size of the core is large or the number of the cores is large, the above problem becomes more serious.

Accordingly, in one embodiment of the present invention, in the manufacturing method of the hollow lightweight insulating block for the building wall, the center core rod 12 is a foamed sponge type surrounding the central portion 12a and the surface of the central portion 12a. An elastic cushion layer (12b) manufactured using at least one material selected from the group consisting of polyurethane, acrylic resin, polypropylene, EPDM (Ethylene Prophlene Diene Monomer), EVA (Ethylene vinyl acetate), silicone, and mixtures thereof. ), and by providing a method for manufacturing a hollow lightweight insulation block for a building wall comprising an outermost protective film layer (12c) surrounding the surface of the elastic cushion layer (12b), the above problems can be dramatically solved.

A schematic exploded perspective view of the center core rod 12 is shown in FIGS. 3 and 4 .

The central portion 12a of the center core rod 12 serves as a support shaft of the center core rod 12, and in general, the material of the core rod can be freely used in the art.

More specifically, hollow or hollow cylindrical or cylindrical wood, stainless steel, plastic, etc. may be used.

In addition, the center core rod 12 according to the present invention surrounds the surface of the central portion 12a, foamed sponge-type polyurethane, acrylic resin, polypropylene, EPDM (Ethylene Prophlene Diene Monomer), EVA (Ethylene vinyl acetate) , including an elastic cushion layer (12b) manufactured using one or more materials selected from the group consisting of silicone and mixtures thereof, even if the volume expands and heats while the lightweight insulating slurry composition 101 is cured, the elasticity The cushion layer 12b has an effect of effectively absorbing the expanded volume and generated heat.

In addition, the elastic cushion layer 12b may be manufactured by forming uniform cells by chemical or mechanical foaming in order to provide cushioning properties for shock absorption, assembly adhesion, and waterproof functions.

The above-described effect can be further improved by using a thickness of 0.5 to 1.5 cm of the elastic cushion layer 12b.

In addition, the center core rod 12 according to the present invention includes an outermost protective film layer 12c surrounding the surface of the elastic cushion layer 12b.

The outermost protective film layer 12c of the center core rod 12 provides a smooth, smooth surface in the hollow formed, and the effect of making it very easy to separate from the lightweight insulating slurry composition according to an embodiment of the present invention there is

In addition, even when the lightweight insulating slurry composition 101 is cured and the volume expands and generates heat, the elastic cushion layer 12c has an effect of having high flexibility so that it can effectively absorb the expanded volume and generated heat. .

The outermost protective film layer 12c of the center core rod 12 is a propylene homopolymer, a copolymer of propylene and α-olefin having a propylene content of 60 to 99% by weight, and ethylene having an ethylene content of 10 to 70% by weight. It may include a resin selected from the group consisting of a copolymer of an α-olefin and a mixture thereof. In this case, the α-olefin copolymerized with propylene may be, for example, ethylene, 1-butene, 1-pentene, 1-hexene, 1-methyl-1-pentene, 1-octene, 1-decene, and mixtures thereof. there is. In addition, the α-olefin copolymerized with the polyethylene resin may be exemplified by propylene, 1-butene, 1-pentene, 1-hexene, 1-methyl-1-pentene, 1-octene, 1-decene, and mixtures thereof. and preferably propylene, 1-butene, 1-hexene, 1-methyl-1-pentene, 1-octene, etc. may be used.

In particular, a mixture of a copolymer of propylene and α-olefin having a propylene content of 60 to 99% by weight and a copolymer of ethylene and α-olefin having an ethylene content of 10 to 70% by weight in a weight ratio of 1: 1 is used. Thus, after the lightweight insulating slurry composition 101 is cured, there is an effect that the center core rod 12 can be more easily removed.

The outermost protective film layer 12c may have a thickness of 30 to 120 μm to further improve the above-described effect.

In addition, the central portion 12a, the elastic cushion layer 12b, and the outermost protective film layer 12c of the center core rod 12 may be adhered and formed by thermal fusion, respectively.

More specifically, the adhesion between the central portion 12a and the elastic cushion layer 12b is at least one solvent type selected from vinyl acetate-based (PVA), latex-based, acrylic (Acryl)-based, EVA-based, and mixtures thereof. This can be done using an adhesive.

In addition, the adhesion between the elastic cushion layer (12b) and the outermost protective film layer (12c) is ethylene vinyl acetate resin (EVA), thermoplastic polyurethane (TPU), polyethylene (PE), polypropylene (PP), 1, It can be carried out by coating one or more solvent-free adhesives selected from two-component reactive urethane adhesives (PU) and mixtures thereof to a thickness of 1 to 2 μm, and then heat-sealing them.

In particular, as adhesion between the elastic cushion layer 12b and the outermost protective film layer 12c, 5 to 15% by weight of a superabsorbent polymer in a hydrogel state may be further mixed as the solvent-free adhesive.

As a result, heat generated while the lightweight insulation slurry composition is cured is absorbed toward the center core rod 12, preventing the lightweight insulation slurry composition from being cured together with the center core rod 12, and the core can be removed later. There is an effect that can be made more easily.

The superabsorbent polymer may be used without particular limitation as long as it is a polymer resin having a three-dimensional network structure while having a large amount of hydrophilic functional groups that absorbs water several hundred to one thousand times or more of its own weight.

The superabsorbent polymer is usually prepared in a powder form, and when it absorbs water, it becomes a hydrogel state.

The superabsorbent polymer included in the solvent-free adhesive absorbs water and uses a superabsorbent polymer in a hydrogel state.

The superabsorbent polymer preferably has a size of about 5 to 10 μm in an unhydrated powder state.

If the size of the powder is too small, manufacturing and handling may be difficult, and water absorption may also be reduced. In addition, the molecular weight of the superabsorbent polymer may be appropriately selected in the range of 5,000 to several hundred thousand.

Meanwhile, during the curing of the lightweight insulating slurry composition, each of the center core rods 12 may be rotated by a rotating means (not shown).

Thereby, the lightweight insulating slurry composition is prevented from being cured together with the center core rod 12, so that the removal of the core assembly can be made more easily later.

The rotation means can be generally used in the art for the above purpose, and the type is not particularly limited.

The curing of the lightweight insulating slurry composition may be performed for 7 to 10 hours.

In addition, the center core rod 12 may be connected to the vacuum pump 15 so that the removal of the center core rod 12 can be made more easily.

In this case, the center core rod 12 may have a cylindrical shape including a plurality of micro-air holes, and may include a through hole therein.

Accordingly, by sucking the air contained in the elastic cushion layer (12b) by the vacuum pump (15), and contracting the elastic cushion layer (12b) and the outermost protective film layer (12c) toward the center of the core rod, The removal of the center core rod 12 can be performed more easily.

A schematic schematic diagram of the core 14 including the center core rod 12 connected to the vacuum pump 15 and an exploded perspective view of the center core rod 12 connected to the vacuum pump 15 are shown in FIGS. 7 and 8, respectively. indicated.

The lightweight insulating slurry composition is not particularly limited to those generally used in the art, but more specifically, by increasing the repulsive force with the outermost protective film layer 12c of the center core rod 12, the core assembly is later removed In consideration of the effect that can be made more easily, with respect to 100 parts by weight of cement, 40 to 80 parts by weight of water, 1 to 10 parts by weight of a curing agent, and 0.1 to 0.8 parts by weight of a foaming agent may be used.

In this case, as the cement, ordinary or white Portland cement meeting KS standards may be used.

In addition, the curing agent is gypsum 15 to 25% by weight, alumina cement 15 to 25% by weight, CSA (Calcium Sulfur Aluminate) 10 to 20% by weight, aluminum oxide 10 to 20% by weight, magnesium hydroxide 5 to 15% by weight and quicklime ( CaO) or slaked lime (Ca(OH) ₂ ) By using 1 to 10% by weight, the curing speed can be quickly controlled while securing the strength of the lightweight insulating slurry composition.

In addition, the foaming agent is palm oil 15 to 25% by weight, higher alcohol derivative lactic acid ester 5 to 10% by weight, nonionic surfactant 7 to 15% by weight, sodium carbonate 3 to 8% by weight, cocoamide, cocoamino acid salt, polyethylene glycol and By using 0.5 to 3% by weight of at least one cocoamide-type foam stabilizer selected from the group consisting of a mixture thereof and the remaining amount of water, it is possible to impart lightness to the lightweight insulating slurry composition. In addition, it prevents the lightweight insulating slurry composition from being cured together with the center core rod 12, and increases the repulsion force with the outermost protective film layer 12c of the center core rod 12, so that later on the core assembly There is an effect that the removal can be made more easily.

In particular, the vegetable palm oil may further improve the above-described effect by using the one containing the saturated fatty acid and the unsaturated fatty acid in a ratio of 1:1.

In addition, the nonionic surfactant is glyceryl stearate, sorbitan sesquioleate, sorbitan stearate, PEG-50 stearate, PEG-100 stearate, PEG-5 glyceryl stearate, sorbitan ol The above-described effect can be further improved by using at least one selected from the group consisting of baits and mixtures thereof.

The manufacturing method of the hollow lightweight insulation block for a building wall according to an embodiment of the present invention has an effect that the hollow lightweight insulation block for a building wall can easily form a hollow part without damage or cracks.

Another embodiment of the present invention provides a hollow lightweight insulating block for a building wall manufactured by the method for manufacturing a hollow lightweight insulating block for a building wall according to the embodiment of the present invention.

The hollow lightweight insulation block 100 for the building wall is in the form of a square block having a circular hollow part 11a in the center and a semicircular hollow part 11b on both edges, respectively, and stacked one layer at a time while constructing the wall of the building. are built into a structure that becomes

For example, in the middle of the left and right of the hollow lightweight insulation block 100 for the building wall of the lower floor, the ends of the hollow light insulation block 100 for both building walls of the upper floor are stacked in abutting state, and accordingly, for the building wall of the lower floor The circle formed by the circular shape of the hollow part 11a of the hollow lightweight insulation block 100 and the semicircle of the hollow lightweight insulation block 100 for both building walls of the upper floor can communicate vertically.

The hollow parts 11a and 11b communicating in this way can be used as a space where reinforcing bars are reinforced or various electric wires are wired, and the hollow parts 11a and 11b after reinforcement and/or wiring are hollow lightweight insulation blocks for building walls ( 100) can be filled with a lightweight insulating slurry composition of the same material.

The hollow lightweight insulation block for the building wall has a compressive strength (3hr) according to KS F 2477 of 5 to 10 MPa, and a density according to KS F 2459 in the range of 0.5 to 1.2 g / ㎤, high strength and excellent lightness. I was able to confirm what I had.

Accordingly, the hollow lightweight insulation block for a building wall manufactured by the method for manufacturing a hollow lightweight insulation block for a building wall according to an embodiment of the present invention can reduce the weight of the wall due to weight reduction, and a wire, a telephone line, an antenna wire , communication lines, etc., and pipes such as water pipes, air conditioner refrigerant pipes, etc., can easily pass through, so that the workability is excellent.

In addition, the hollow lightweight insulation block for the building wall has the effect of securing sufficient strength to maintain the hollow part.

As mentioned above, although preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various modifications can be made by those skilled in the art within the scope of the technical spirit of the present invention. This is possible.

10 : formwork
11a, 11b: hollow part
12: center core rod
12a: center
12b: elastic cushion layer
12c: outermost protective film layer
13: side core bar
14: core
15: vacuum pump
16a, 16b: Hall
100: hollow lightweight insulation block for building walls
101: lightweight insulating slurry composition

Claims (4)

The formwork 10 made of stainless steel and the hollow part 11a.11b of the hollow lightweight insulation block for the building wall can be mounted and detached from the inside of the formwork 10 and mounted inside the formwork 10 at the same time. A core 14 composed of a center core rod 12 and a side core rod 13 to form is provided, and the center core rod 12 and the side core rod 13 are inserted into the upper opening of the mold 10 . a core mounting step of mounting the core 14 inside the formwork 10;
A lightweight insulation slurry composition injection step of injecting a lightweight insulation slurry composition 101 containing cement, water, a curing agent and a foaming agent into the formwork 10 on which the core 14 is mounted;
curing the lightweight insulating slurry composition;
a core removal and mold dismantling step of removing the center core rod 12 by pulling it up vertically and disassembling the mold 20 together with the side core rod 13;
In the manufacturing method of the hollow lightweight insulation block 100 for a building wall comprising a,
The center core rod 12 includes a central portion 12a and a sponge-type polyurethane foamed around the surface of the central portion 12a, acrylic resin, polypropylene, EPDM (Ethylene Prophlene Diene Monomer), and EVA (Ethylene vinyl acetate). ), an elastic cushion layer (12b) manufactured using at least one material selected from the group consisting of silicone and mixtures thereof, and an outermost protective film layer (12c) surrounding the surface of the elastic cushion layer (12b) Method of manufacturing a hollow lightweight insulation block for a building wall, characterized in that it comprises a.
According to claim 1,
The outermost protective film layer 12c of the center core rod 12 has a thickness of 30 to 120 μm, a propylene homopolymer, a copolymer of propylene and α-olefin having a propylene content of 60 to 99 wt%, ethylene A method for manufacturing a hollow lightweight insulation block for a building wall, comprising a resin selected from the group consisting of a copolymer of ethylene and α-olefin having a content of 10 to 70% by weight and a mixture thereof.
According to claim 1,
The lightweight insulating slurry composition contains 40 to 80 parts by weight of water, 1 to 10 parts by weight of a curing agent, and 0.1 to 0.8 parts by weight of a foaming agent, based on 100 parts by weight of cement;
The curing agent is gypsum 15 to 25% by weight, alumina cement 15 to 25% by weight, CSA (Calcium Sulfur Aluminate) 10 to 20% by weight, aluminum oxide 10 to 20% by weight, magnesium hydroxide 5 to 15% by weight and quicklime (CaO) or slaked lime (Ca(OH) ₂ ) 1 to 10% by weight;
The foaming agent is palm oil 15 to 25% by weight, higher alcohol derivative lactic acid ester 5 to 10% by weight, nonionic surfactant 7 to 15% by weight, sodium carbonate 3 to 8% by weight, cocoamide, cocoamino acid salt, polyethylene glycol and their A method of manufacturing a hollow lightweight insulation block for a building wall, comprising 0.5 to 3% by weight of at least one cocoamide-type foam stabilizer selected from the group consisting of a mixture and the remaining amount of water.
[Claim 5] A hollow lightweight insulation block for a building wall, characterized in that it is manufactured by the method for manufacturing a hollow lightweight insulation block for a building wall according to any one of claims 1 to 3.

Images