KR20130116991A - Manufacturing method of insulating cover and insulating cover using the method - Google Patents

Manufacturing method of insulating cover and insulating cover using the method Download PDF

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Publication number
KR20130116991A
KR20130116991A KR1020120039537A KR20120039537A KR20130116991A KR 20130116991 A KR20130116991 A KR 20130116991A KR 1020120039537 A KR1020120039537 A KR 1020120039537A KR 20120039537 A KR20120039537 A KR 20120039537A KR 20130116991 A KR20130116991 A KR 20130116991A
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KR
South Korea
Prior art keywords
insulating material
heat insulating
manufacturing
insulation cover
mold
Prior art date
Application number
KR1020120039537A
Other languages
Korean (ko)
Inventor
이철우
Original Assignee
마루기건 주식회사
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Priority to KR1020120039537A priority Critical patent/KR20130116991A/en
Publication of KR20130116991A publication Critical patent/KR20130116991A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/76—Moulds
    • B28B21/78—Moulds with heating or cooling means, e.g. steam jackets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/76—Moulds
    • B28B21/82—Moulds built-up from several parts; Multiple moulds; Moulds with adjustable parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/0097—Press moulds; Press-mould and press-ram assemblies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
    • B28B7/388—Treating surfaces of moulds, cores, or mandrels to prevent sticking with liquid material, e.g. lubricating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/40—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material
    • B28B7/44—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material for treating with gases or degassing, e.g. for de-aerating
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/043—Alkaline-earth metal silicates, e.g. wollastonite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/14—Minerals of vulcanic origin
    • C04B14/18—Perlite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/38—Fibrous materials; Whiskers
    • C04B14/42—Glass

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Thermal Insulation (AREA)

Abstract

The present invention relates to a heat insulation cover manufacturing method and a heat insulation cover manufactured using the same, and more particularly, to a heat insulation cover manufacturing method for wrapping the purpose of heat insulation in a pipe material, such as pipes, and a heat insulation cover manufactured using the same. Method for producing a heat insulation cover of the present invention is a release agent applying step, the first heat insulating material forming step, the heating and separating step of separating the first heat insulating material (A), adhesive applying step; And a step of adhering the second heat insulating material B to adhere the second heat insulating material B.

Description

Insulating cover manufacturing method and insulating cover using the same {Manufacturing method of insulating cover and insulating cover using the method}

The present invention relates to a heat insulation cover manufacturing method and a heat insulation cover manufactured using the same, and more particularly, to a heat insulation cover manufacturing method for wrapping the purpose of heat insulation in a pipe material, such as pipes, and a heat insulation cover manufactured using the same.

The heat insulating material is a generic term for all materials used for the purpose of suppressing heat transfer as much as possible. The piping system is used to prevent the leakage of heat and unnecessary heat input to promote energy saving, and to prevent the surface condensation and the distribution of deflection of room temperature, thereby conserving energy. In addition, it is used for the purpose of thermal insulation in piping systems in which high heat flows in power plants, steel mills, and the like.

Insulation materials used for the purpose of suppressing heat transfer have been classified as insulation materials at low temperatures, insulation materials at room temperature to mid temperature, and materials used at higher temperatures than these, but all of them have recently been referred to as insulation materials. The heat insulating material usually has many porous materials, and the lower the thermal conductivity, the better the heat insulating performance.

Korean Patent Registration No. 10-664665 (entitled "Fill Material for Fire Retardation Treatment of Refractory Filling Structure and Method for Producing the Same") relates to a filling material for the fire partition treatment of a fireproof filling structure and a manufacturing method thereof, and more particularly, And a fire resistant coating formed on the surface of the heat insulating layer, and a heat resistant core material inside the heat insulating layer, and a method for manufacturing the fireproof partitioning fill material. Posted. It is said that by forming a fire-retardant film on the surface of the thermal insulation layer, it is possible to make the construction with a tight construction by introducing a compression process that improves flame retardance, waterproofness, abrasion resistance, resistance to disintegration and restoration and gives elasticity to the insulation layer. It is disclosed that heat-resistant core material is formed to prevent deterioration of a thermal insulation layer, to prevent dropout due to shrinkage upon heating, and to serve as a support for water pressure during water injection test.

1. Korean Patent No. 10-664665

The present invention relates to a heat insulation cover manufacturing method and a heat insulation cover using the same for wrapping the piping material for the purpose of heat insulation in the piping material through which the high temperature fluid passes, heat transfer to the outside of the piping material through which the high temperature fluid passes ( Heat loss) and to simplify the manufacturing process.

Method for producing a thermal insulation cover according to the present invention is a release agent applying step of applying a release agent (C) to the receiving portion (1100) of the mold (1000, 1000a) for producing a shape that can wrap the outer peripheral surface of the piping material (P); A first insulation (A) comprising any one of mineral wool, glass wool, calcium silicate, and perlite in the accommodating part 1100 to which the release agent C is applied. A first heat insulating material forming step for manufacturing the first heat insulating material so as to have a predetermined shape by locating; A heating and separating step of heating the first insulating material (A) located in the mold (1000, 1000a) and then separating the first insulating material (A) from the mold (1000, 1000a); An adhesive applying step of applying an adhesive (D) to an inner circumferential surface of the separated first insulating material (A); And ceramic wool or ceramic containing alumina (Al 2 O 3 ) and silica (SiO 2 ) having a use temperature range higher than the use temperature range of the first heat insulating material (A) on a portion to which the adhesive (D) is applied. A second heat insulating material (B) bonding step of bonding the second heat insulating material (B) made of wool (Cerak Wool); .

The first heat insulating material forming step, after spraying the liquid first heat insulating material (A) to the receiving portion 1100 of the mold (1000, 1000a) to which the release agent (C) is applied using a spray 230 (pressurizing mechanism ( 2000) to pressurize.

On the other hand, in the first heat insulating material forming step, the pressing mechanism 2000 is fastened by using the injector 240 to the liquid first heat insulating material (A), the housing of the mold (1000, 1000a) coated with the release agent (C) It may be injected into the unit 1100.

In another method, the step of forming the first heat insulating material includes placing the first heat insulating material A having a cotton shape on the receiving portion 1100 of the molds 1000 and 1000 a to which the release agent C is applied, and then pressing mechanism 2000. ) Can be pressurized.

The adhesive (D) of the present invention may include alumina (Al 2 O 3), silica (SiO 2), and ferric oxide (Fe 2 O 3) such that the safe use temperature is 1500 ° C.

Insulation cover of the present invention can be prepared by the above manufacturing method according to the present invention.

By the present invention as described above it is possible to maximize the heat insulation efficiency wrapped in a heat insulating cover manufactured according to the manufacturing method according to the present invention in the piping material flowing a high temperature fluid 1000 ℃ or more. In addition, by the manufacturing method according to the invention it is possible to efficiently produce a heat insulation cover.

1 is a process diagram of a method for manufacturing a heat insulation cover according to the present invention
Figure 2 is a conceptual diagram representing the application of the first insulation of the thermal insulation cover according to the present invention.
Figure 3 is a conceptual diagram showing a mold and a pressing mechanism for pressurizing and heating the first heat insulating material of the heat insulating cover according to the present invention.
4 is a conceptual view showing a cross-section of a pipe wrapped with a heat insulating cover according to the present invention.

First Embodiment (First insulation cover manufacturing method)

The heat insulation cover of the present invention is composed of a first heat insulating material (A) and a second heat insulating material (B). The first heat insulating material (A) is a liquid phase, the second heat insulating material (B) is similar to wool (wool) material or plate-like.

Referring to A of FIG. 1, the second heat insulating material B has a usable working temperature range even at a relatively high temperature, for example, about 1000 ° C. That is, a material surrounding the outer circumferential surface of a pipe material through which fluid of about 1000 ° C. flows. It is preferable to use. Also, it is preferable that the first heat insulating material A is made of a material having an operating temperature range of about 700 DEG C or less, which is lower than that of the second heat insulating material.

The first heat insulating material A is provided on the outer surface of the second heat insulating material B surrounding the outer circumferential surface of the piping material and is formed of mineral wool, glass wool, calcium cilicate, perlite, , ≪ / RTI > Here, the mineral wool has an operating temperature range of about 600 ° C, a glass wool has a usable temperature range of about 350 ° C, and a calcium cilicate or perlite has a usable temperature range of about 550 ° C Is preferably used. In addition, the pearlite means that the pearlstone made of volcanic stone is sintered at 900 to 1200 ° C, pulverized, sintered and expanded, and composed of lightweight spherical small particles having microvoids inside.

The thermosetting resin, adhesive, gypsum powder, cement powder and water in any one of such mineral wool, glass wool, calcium silicate, perlite, and the like of the first insulating material A When mixed together, it turns into liquid. More specifically, the first insulating material (A) is any one of mineral wool (glass wool), glass wool (glass wool), calcium silicate (calcium cilicate), perlite (perlite) 10% by weight, thermosetting resin 10% by weight, adhesive It consists of a liquid coating comprising 10% by weight, 30% by weight gypsum powder, 30% by weight cement powder, 10% by weight water.

Referring to FIG. 2, the first heat insulating material A is prepared in a liquid state while mixing using the mixer 11 in the storage tank 10 and then supplied to the supply tank 100. The first insulating material A supplied to the supply tank 100 is sprayed from the spray 230 via the transfer line 200. The transfer line 200 is provided with a valve 210 and a pump 220 for adjusting the supply amount. In order to evenly spray the first insulating material (A) on the mounted mold (1000), the roller (1100) is provided at the bottom of the mold (1000) to rotate the mold (1000) clockwise or counterclockwise about the central axis. To make it possible. On the other hand, in order to evenly spray the first insulation (A) to the mold 1000 to which the release agent is applied, the spray 230 is the length of the mold 1000 by using the left and right moving means 300 provided with the rod 320. To move along the direction. On the other hand, the left and right movement means 300 is supported by the support portion (310).

By using the injection device including the supply tank 100, the transfer line 200, the left and right moving means 300, as described above, it was possible to spray the first insulation (A) evenly on the inner peripheral surface of the mold (1000).

The mold 1000 to which the first insulation A is injected is pressurized using the pressurizing mechanism 2000. The pressurized first heat insulating material A is heated to about 200 ° C. together with the mold 1000 and the pressurizing mechanism 2000. As the first insulation (A) is heated to wrap around the outer circumferential surface of the pipe (P), the shape of the cross section may be manufactured in a semicircular or circular shape.

After separating the first heat insulating material (A) heated through the heating step, the adhesive (D) is applied to the inner peripheral surface.

Ceramic including alumina (Al 2 O 3 ) and silica (SiO 2 ) having an operating temperature range higher than the operating temperature range of the first insulating material (A) on the inner circumferential surface of the first insulating material (A) coated with the adhesive (D) A second heat insulating material (B) made of wool or cerak wool is bonded.

The adhesive (D) preferably contains alumina (Al 2 O 3), silica (SiO 2), and ferric oxide (Fe 2 O 3) such that the safe use temperature is 1500 ° C. More specifically, it is preferable to include about 50% by weight of alumina, about 45% by weight of silica, about 0.1 to 0.3% by weight of ferric oxide.

The insulation cover according to the present invention may be manufactured through the release agent applying step, the first insulating material forming step, the first insulating material heating and separating step, and the second insulating material bonding step.

Second Embodiment (2nd insulation cover manufacturing method)

As in the first embodiment, the heat insulating cover of the present invention comprises a first heat insulating material (A) and a second heat insulating material (B). The first heat insulating material (A) is a liquid phase, the second heat insulating material (B) is similar to wool (wool) material or plate-like.

Referring to B of FIG. 1, the second insulating material B has a usable working temperature range even at a relatively high temperature, for example, about 1000 ° C. That is, a material surrounding the outer circumferential surface of the piping material through which fluid of about 1000 ° C. flows. It is preferable to use. Also, it is preferable that the first heat insulating material A is made of a material having an operating temperature range of about 700 DEG C or less, which is lower than that of the second heat insulating material.

The first heat insulating material A is provided on the outer surface of the second heat insulating material B surrounding the outer circumferential surface of the piping material and is formed of mineral wool, glass wool, calcium cilicate, perlite, , ≪ / RTI > Here, the mineral wool has an operating temperature range of about 600 ° C, a glass wool has a usable temperature range of about 350 ° C, and a calcium cilicate or perlite has a usable temperature range of about 550 ° C Is preferably used. In addition, the pearlite means that the pearlstone made of volcanic stone is sintered at 900 to 1200 ° C, pulverized, sintered and expanded, and composed of lightweight spherical small particles having microvoids inside.

The thermosetting resin, adhesive, gypsum powder, cement powder and water in any one of such mineral wool, glass wool, calcium silicate, perlite, and the like of the first insulating material A When mixed together, it turns into liquid. More specifically, the first insulating material (A) is any one of mineral wool (glass wool), glass wool (glass wool), calcium silicate (calcium cilicate), perlite (perlite) 10% by weight, thermosetting resin 10% by weight, adhesive It consists of a liquid coating comprising 10% by weight, 30% by weight gypsum powder, 30% by weight cement powder, 10% by weight water.

Referring to B of FIG. 1, the first insulating material A is injected into a space inside the mold 1000 and the pressing mechanism 2000 coupled thereto. For injection, the injector 240 is fastened to a hole provided in the pressing mechanism 2000 or the mold 1000.

For the injection of the first insulating material A using the injector 240, an injection apparatus including the supply tank 100, the transfer line 200, the horizontal movement means 300, and the like described in the first embodiment may be used. . In the case of the horizontal movement means 300, it may be fixed without moving left and right.

The injected first heat insulating material A is heated to about 200 ° C. together with the mold 1000 and the pressurizing mechanism 2000. After separating the first heat insulating material (A) heated through the heating step, the adhesive (D) is applied to the inner peripheral surface.

Ceramic including alumina (Al 2 O 3 ) and silica (SiO 2 ) having an operating temperature range higher than the operating temperature range of the first insulating material (A) on the inner circumferential surface of the first insulating material (A) coated with the adhesive (D) A second heat insulating material (B) made of wool or cerak wool is bonded.

The insulation cover according to the present invention may be manufactured through the release agent applying step, the first insulating material forming step, the first insulating material heating and separating step, and the second insulating material bonding step.

Third Embodiment (Third insulation cover manufacturing method)

The heat insulation cover of the present invention is composed of a first heat insulating material (A) and a second heat insulating material (B). Unlike the first and second embodiments, the first insulating material (A) is similar to wool, and the second insulating material (B) is similar to wool (wool).

Referring to FIG. 1C, the second heat insulating material B has a usable temperature range even at a relatively high temperature, for example, about 1000 ° C. That is, a material surrounding the outer circumferential surface of the piping material through which a fluid of about 1000 ° C. flows. It is preferable to use. Also, it is preferable that the first heat insulating material A is made of a material having an operating temperature range of about 700 DEG C or less, which is lower than that of the second heat insulating material.

The first heat insulating material A is provided on the outer surface of the second heat insulating material B surrounding the outer circumferential surface of the piping material and is formed of mineral wool, glass wool, calcium cilicate, perlite, , ≪ / RTI > Here, the mineral wool has an operating temperature range of about 600 ° C, a glass wool has a usable temperature range of about 350 ° C, and a calcium cilicate or perlite has a usable temperature range of about 550 ° C Is preferably used. In addition, the pearlite means that the pearlstone made of volcanic stone is sintered at 900 to 1200 ° C, pulverized, sintered and expanded, and composed of lightweight spherical small particles having microvoids inside.

The first heat insulating material A having a shape such as wool is pressurized using the mold 1000a and the pressing mechanism 2000a as shown in FIG. 3.

Referring to FIG. 3, the mold 1000a includes an accommodating part 1100 for accommodating a first insulating material A having a shape such as cotton (wool) therein. A releasing agent to be described later is applied to the accommodating portion 1100, the first heat insulating material A is filled, and the object is heated under pressure. A latch 2100, which will be described later, is pressed against the ring 1200 of the mold 1000 for pressurization.

Referring to FIG. 3, the pressing mechanism 2000a may have a shape that may be accommodated in the accommodation portion 1100. In addition, the latch mechanism 2100 may correspond to the hook 1200 of the pressing mechanism 2000a so that the pressing mechanism 2000a may be hooked on the above-described ring 1200 to fasten the pressing mechanism 2000a and the mold 1000a to each other. In place. In addition, a plurality of holes 2200 are drilled in the upper surface side of the pressing mechanism 2000a. The hole 2200 is for discharging the gas generated by the processing of the heat insulating material therein when the mold 1000a coupled with the pressure mechanism 2000a is heated in the heating mechanism (not shown).

After separating the heated first heat insulating material A through the pressurizing and heating steps, the adhesive D is applied to the inner circumferential surface thereof.

Ceramic including alumina (Al 2 O 3 ) and silica (SiO 2 ) having an operating temperature range higher than the operating temperature range of the first insulating material (A) on the inner circumferential surface of the first insulating material (A) coated with the adhesive (D) A second heat insulating material (B) made of wool or cerak wool is bonded.

The insulation cover according to the present invention may be manufactured through the release agent applying step, the first insulating material forming step, the first insulating material heating and separating step, and the second insulating material bonding step.

Fourth Embodiment (Heat insulation cover)

Insulating cover can be manufactured using the method through the first to third embodiments as described above. The insulation cover according to the present invention can be used for the purpose of safety and insulation by wrapping the outer circumferential surface of the pipe (P) in which the high temperature fluid flows with reference to FIG. 4.

Insulation cover according to the present invention is composed of a double layer consisting of the first insulation (A) and the second insulation (B), the second insulation (B) after applying the adhesive (D) to the inner peripheral surface of the first insulation (A). Bonding is as described above.

100: Feeder 200: Feeder line
300: left and right movement means 1000: mold
2000: pressurization mechanism

Claims (6)

Release agent application step of applying a release agent (C) to the receiving portion 1100 of the mold (1000, 1000a) for manufacturing the outer peripheral surface of the piping material (P) to form a shape;
A first insulation (A) comprising any one of mineral wool, glass wool, calcium silicate, and perlite in the accommodating part 1100 to which the release agent C is applied. A first heat insulating material forming step for manufacturing the first heat insulating material so as to have a predetermined shape by locating;
A heating and separating step of heating the first insulating material (A) located in the mold (1000, 1000a) and then separating the first insulating material (A) from the mold (1000, 1000a);
An adhesive applying step of applying an adhesive (D) to an inner circumferential surface of the separated first insulating material (A); And
Ceramic wool or ceramic wool containing alumina (Al 2 O 3 ) and silica (SiO 2 ) having a use temperature range higher than the use temperature range of the first heat insulating material (A) on the coated portion (D) A second heat insulating material (B) bonding step of bonding the second heat insulating material (B) made of (Cerak Wool);
Thermal insulation cover manufacturing method comprising a.
The method of claim 1,
The first insulating material forming step,
Spraying the liquid first heat insulating material (A) to the receiving portion (1100) of the mold (1000, 1000a) to which the release agent (C) is applied using the spray (230) and then pressurizing using the pressure mechanism (2000). Insulation cover manufacturing method characterized in that.
The method of claim 1,
The first insulating material forming step,
The pressurizing mechanism 2000 is fastened by using the injector 240 to inject the liquid first heat insulating material A into the receiving part 1100 of the molds 1000 and 1000a to which the release agent C is applied. Insulation cover manufacturing method.
The method of claim 1,
The first insulating material forming step,
Thermal insulation cover, characterized in that the first insulating material (A) having a cotton shape is placed in the receiving portion (1100) of the mold (1000, 1000a) to which the release agent (C) is applied and pressurized using a pressure mechanism (2000) Manufacturing method.
The method according to any one of claims 1 to 4,
The adhesive (D), a method for producing a thermal insulation cover comprising alumina (Al2O3), silica (SiO2), ferric oxide (Fe2O3) to have a safe use temperature of 1500 ℃.
Thermal insulation cover manufactured by the manufacturing method according to any one of claims 1 to 5.
KR1020120039537A 2012-04-17 2012-04-17 Manufacturing method of insulating cover and insulating cover using the method KR20130116991A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120039537A KR20130116991A (en) 2012-04-17 2012-04-17 Manufacturing method of insulating cover and insulating cover using the method

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Application Number Priority Date Filing Date Title
KR1020120039537A KR20130116991A (en) 2012-04-17 2012-04-17 Manufacturing method of insulating cover and insulating cover using the method

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Publication Number Publication Date
KR20130116991A true KR20130116991A (en) 2013-10-25

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200107453A (en) * 2019-03-08 2020-09-16 김성래 Mold type pipe thermal insulation material having non-combustibility and manufacturing method thereof
CN114102819A (en) * 2021-11-08 2022-03-01 宜兴广豪科技有限公司 Automatic mold release agent spraying device for concrete pipe pile mold and using method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200107453A (en) * 2019-03-08 2020-09-16 김성래 Mold type pipe thermal insulation material having non-combustibility and manufacturing method thereof
CN114102819A (en) * 2021-11-08 2022-03-01 宜兴广豪科技有限公司 Automatic mold release agent spraying device for concrete pipe pile mold and using method
CN114102819B (en) * 2021-11-08 2022-09-13 宜兴广豪科技有限公司 Automatic mold release agent spraying device for concrete pipe pile mold and using method

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E601 Decision to refuse application
AMND Amendment
X701 Decision to grant (after re-examination)