KR101822106B1 - Complex panel for outer wall or door of loaded vehicle and manufacturing method thereof - Google Patents
Complex panel for outer wall or door of loaded vehicle and manufacturing method thereof Download PDFInfo
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- KR101822106B1 KR101822106B1 KR1020150145859A KR20150145859A KR101822106B1 KR 101822106 B1 KR101822106 B1 KR 101822106B1 KR 1020150145859 A KR1020150145859 A KR 1020150145859A KR 20150145859 A KR20150145859 A KR 20150145859A KR 101822106 B1 KR101822106 B1 KR 101822106B1
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- composite panel
- door
- weight
- wall
- manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
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- B29C47/0042—
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention relates to a method of manufacturing a composite panel for an outer wall or a door of a freight vehicle, and more particularly, Cell stabilizer; As an internal lubricant, calcium stearate; Antioxidants; Dispersing agent; And an azo carbon-based blowing agent to prepare a blend; (2) extruding the mixture to form a core material; (3) bonding the aluminum or steel surface material coated with the thermoplastic film to the upper and lower portions of the extruded foamed core material to form a composite panel; And (4) bonding the composite panel on which the surface material is adhered by pressurizing, cooling, cutting, and adhering a protective film to a composite panel for an outer wall or a door of a freight car.
In the method of manufacturing a composite panel of the present invention, the foamed resin included in the core portion of the composite panel forms a very uniform bubble (cell) and can form a thickness of 7 to 15 mm, so that the strength and durability It is possible to produce an excellent, lightweight product.
Description
The present invention relates to a composite panel for an outer wall or a door of a freight vehicle and a method of manufacturing the same.
Generally, foaming resin is easy to shape, easy to shape, absorbs shock, and has high heat insulation performance, and is mainly used as a cushioning material, building material, packaging material, thermal insulation material, industrial product, shockproof material. Such a foamed resin is injected into a mold having a molding space to be formed into a desired shaped article.
Particularly, in the case of a panel used for an outer wall or a rear door of a freight vehicle, it is excellent in light weight, strength and durability, and is extruded and used as a foam in a core portion. However, the cells (bubbles) forming the molded body by foaming must be uniformly formed, and it is difficult to form a homogeneous bubble (cell) when foaming to a thickness exceeding a certain thickness. For example, in a conventional metal composite panel, a foamed polyethylene sheet having a thickness of 3 to 6 mm, which is produced by an extrusion method, is used as an inner core, and a foamed polyethylene sheet made of an extrusion method has a thickness of about 0.1 to 0.5 mm A metal sheet made of aluminum, stainless steel or the like is coated with a plastic resin such as a film or a foamed polyethylene sheet by melting it with heat or adhering it with a chemical adhesive or the like.
In recent years, there has been an increase in the demand for a foamed composite panel that is lightweight yet excellent in strength and durability, as the market for a specially designed vehicle equipped with facilities and structures for carrying out equipment work for specific purposes is being activated. Efforts are continuing to be made.
For example, Korean Patent No. 556153 discloses an extruded foamed heat insulating board on which waterproofing and insulation are made, a foamed vinyl chloride (PVC) foam sheet which is thermally fused to both sides of the extruded foamed heat insulating board to prevent moisture absorption during riveting, And a steel sheet which is thermally fused to both sides of the polyvinyl chloride (PVC) foam sheet to form a rigid outer surface. A technique relating to a sandwich panel for a feature is disclosed in Japanese Patent Laid-Open Publication No. 2010-036521, Discloses a method for manufacturing a sandwich panel capable of reliably controlling the thickness and reducing the defective rate and discloses a method for manufacturing a sandwich panel capable of improving stiffness and light weight to be applied to a vehicle or other transportation means structure or the like in Korean Patent Publication No. 2013-0052207 And a sandwich panel manufactured by the method are disclosed, but the bubble of the present invention is homogeneous A composite panel for an outer wall or a door of a freight vehicle which can be expanded to a thickness of 7 mm or more thick, and a manufacturing method thereof have not been disclosed.
The present invention has been made in view of the above-mentioned needs, and it is an object of the present invention to provide a composite panel for an outer wall or a door of a freight car and a method of manufacturing the same, and a panel of 7 to 15 mm can be manufactured according to the manufacturing method of the present invention. Thereby completing the present invention.
In order to achieve the above object, the present invention provides a method of manufacturing a composite panel for an outer wall or a door of a freight car, comprising a surface member made of aluminum and a steel material and a core material filled in the surface material,
(1) As the base resin, a high-density polyethylene resin and a low-density polyethylene resin; Cell stabilizer; As an internal lubricant, calcium stearate; Antioxidants; Dispersing agent; And an azo carbon-based blowing agent to prepare a blend;
(2) extruding the mixture to form a core material;
(3) bonding the aluminum or steel surface material coated with the thermoplastic film to the upper and lower portions of the extruded foamed core material to form a composite panel; And
(4) A method of manufacturing a composite panel for an outer wall or a door of a freight vehicle, comprising: pressing, cooling, cutting, and bonding a protective film to the composite panel to which the surface material is adhered.
The present invention also provides a composite panel for an outer wall or a door of a freight car manufactured by the method for manufacturing a composite panel for an outer wall or a door of a freight vehicle.
The present invention relates to a method of manufacturing a composite panel for an outer wall or a door of a freight vehicle, and more particularly, to a method of manufacturing a composite panel for an outer wall or a door of a freight car, which comprises a surface member made of aluminum and a steel material and a core material filled in the surface material. And a manufacturing method of the composite panel. The composite panel manufactured according to the manufacturing method of the present invention is very uniform in the formation of the foamed cells, and is formed into a multilayer structure, so that the strength and durability are excellent.
1 is a view showing a manufacturing process of a composite panel for an outer wall or door for a freight vehicle according to an embodiment of the present invention.
A method of manufacturing a composite panel for an outer wall or a door of a freight vehicle, the composite panel comprising a front surface material made of aluminum and a steel material, and a core material filled in the front surface material,
(1) As the base resin, a high-density polyethylene resin and a low-density polyethylene resin; Cell stabilizer; As an internal lubricant, calcium stearate; Antioxidants; Dispersing agent; And an azo carbon-based blowing agent to prepare a blend;
(2) extruding the mixture to form a core material;
(3) bonding the aluminum or steel surface material coated with the thermoplastic film to the upper and lower portions of the extruded foamed core material to form a composite panel; And
(4) a step of bonding, pressing, cooling, cutting, and adhering a protective film to the composite panel to which the surface member is adhered, and a method of manufacturing the composite panel for an outer wall or a door of a freight car.
In the step (1), the combination comprises 85 to 89% by weight of a high density polyethylene resin and 8.5 to 11.5% by weight of a low density polyethylene resin, 0.6 to 1.0% by weight of a cell stabilizer; 0.8 to 1.2% by weight of calcium stearate; 0.08 to 0.12% by weight of an antioxidant; From 0.15 to 0.45% by weight of a dispersant; And 0.70 to 0.90% by weight of azothiocarbonamide based foaming agent, more preferably 87% by weight of high density polyethylene resin and 10% by weight of low density polyethylene resin, 0.8% by weight of cell stabilizer; 1.0% by weight calcium stearate; 0.1% by weight of an antioxidant; 0.3% by weight of a dispersant; And 0.8% by weight of an azo-carbon-based blowing agent, but the present invention is not limited thereto.
It is preferable that the core part produced by the extrusion foaming molding of the above-mentioned combination is bonded by using a thermoplastic film for adhesion of 70 탆 or more for bonding with upper and lower surface materials composed of aluminum and steel.
The polyethylene resin used in the combination can be used by recycling the waste synthetic resin, thereby preventing environmental pollution. The core and the surface material are formed into a multilayer structure by bonding a thermoplastic film to increase the strength and durability And the product can be lightened by injecting a foaming agent.
The cell stabilizer is preferably sodium bicarbonate, but is not limited thereto. More preferably, 0.8 wt% sodium bicarbonate is used. When 0.8 wt% sodium bicarbonate is used as the cell stabilizer, The effect of homogenizing is excellent.
The antioxidant in the combination is preferably a phenolic or phosphorus antioxidant. Examples of the phenol antioxidant include 1,1,3-tris (2-methyl-4-hydroxy-5-tertiary-butylphenyl ) Butane (1,1,3-Tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane having a melting point of 184 占 폚), octadecyl 3- Tert-butyl-4-hydroxyphenyl) propionate having a melting point of 51 ° C), pentaerythritol tetrakis (3,5-di-tert- Tert-butyl-4-hydroxyhydrocinnamate, melting point 115 占 폚), 3,9-bis [1,1-dimethyl-2 - [(3-hydroxy- 5-methylphenyl) propionyloxy] ethyl] -2,4,8,10-tetraoxaspiro [5.5] undecane (3,9-Bis [1,1-dimethyl (3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy] ethyl] -2,4,8,10-tetraoxaspiro [5.5] undecane; melting point: Di-tert-butyl-4-hydroxyphenyl) - N, N'-hexamethylenedipropionamide having a melting point of 156 占 폚) and triethylene glycol bis (3-bis (3,5-di-tert-butyl-4-hydroxyphenyl) 3-tert-butyl-4-hydroxy-5-methylphenyl) propionate having a melting point of 76 ° C) But not limited to, triphenyl phosphate (melting point 22 ° C), isodecyl diphenyl phosphate (isodecyl diphenyl phosphate; Tris (2,4-di-tert-butylphenyl) phosphate (melting point 180 占 폚), 3,9-bis (octadecyloxy ) -2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5] undecane (3,9-Bis (octadecyloxy) -2,4,8,10-tetraoxa-3,9-diphosphaspiro [4,5] undecane (melting point 47 ° C) and 2,2'-methylenebis (4,6-ditertane-butyl-phenyl) -2-ethylhexyl phosphate -butyl-phenyl) -2-ethylhexylphosphate; melting point: 146 ° C), but the present invention is not limited thereto.
The dispersant in the formulation is not particularly limited, but wax is preferably used.
The present invention also relates to a composite panel for an outer wall or a door of a freight car manufactured by the method for manufacturing a composite panel for an outer wall or a door of the freight vehicle.
The thickness of the composite panel is 7 to 15 mm, but is not limited thereto. Further, it is preferable that the lateral size of the composite panel manufactured by the manufacturing method of the present invention is 1186 to 1219 mm x 2436 to 2515 mm.
Hereinafter, the present invention will be described in more detail with reference to Examples. It is to be understood by those skilled in the art that these embodiments are merely illustrative of the present invention and that the scope of the present invention is not limited thereto.
Example 1. The outer wall of a freight car or For door Manufacture of composite panels
87% by weight of a high density polyethylene resin and 10% by weight of a low density polyethylene resin, 0.8% by weight of sodium bicarbonate; 1.0% by weight calcium stearate; 0.1% by weight of an antioxidant (octadecyl 3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate); 0.3% by weight of a dispersant (wax); And 0.8% by weight of an azoctic carbonamide blowing agent.
Thereafter, the mixture was extruded through a hopper to form a core material by extrusion foaming, and the core material was extruded through a feeder, an extruder, and a metering unit to a predetermined thickness through a tie having a constant flow rate . In this process, And the width of the core material was adjusted by providing a decelerating unit on the side surface.
A thermoplastic film, which is an adhesive for aluminum and steel, was adhered to the upper and lower portions of the core material by extrusion foam molding, and a roll was used as shown in Fig.
Thereafter, the composite panel was subjected to cooling and joining processes in a subsequent bonding line, and a composite panel produced using take-up roll was stretched. To protect the surface of the product, a protective film was attached and a constant size (1186 to 1219 mm x 2436 mm, 2515 mm).
Claims (5)
(1) As the base resin, 85 to 89% by weight of a high-density polyethylene resin and 8.5 to 11.5% by weight of a low-density polyethylene resin; From 0.6 to 1.0% by weight of a cell stabilizer; 0.8-1.2% by weight calcium stearate as internal lubricant; 0.08 to 0.12% by weight of an antioxidant; From 0.15 to 0.45% by weight of a dispersant; And 0.70 to 0.90% by weight of an azoctic carbonamide based foaming agent to prepare a blend;
(2) extruding the mixture to form a core material;
(3) bonding the aluminum or steel surface material coated with the thermoplastic film to the upper and lower portions of the extruded foamed core material to form a composite panel; And
(4) A method for manufacturing a composite panel for an outer wall or a door of a freight car, comprising: pressing, cooling, cutting and bonding a protective film to the composite panel to which the surface material is adhered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150145859A KR101822106B1 (en) | 2015-10-20 | 2015-10-20 | Complex panel for outer wall or door of loaded vehicle and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150145859A KR101822106B1 (en) | 2015-10-20 | 2015-10-20 | Complex panel for outer wall or door of loaded vehicle and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20170045850A KR20170045850A (en) | 2017-04-28 |
| KR101822106B1 true KR101822106B1 (en) | 2018-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1020150145859A KR101822106B1 (en) | 2015-10-20 | 2015-10-20 | Complex panel for outer wall or door of loaded vehicle and manufacturing method thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102249502B1 (en) * | 2019-10-28 | 2021-05-07 | 황성일 | Door Interior Material for Special Feature Truck |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007100961A (en) * | 2006-10-17 | 2007-04-19 | Nippon Unicar Co Ltd | Foaming polyethylene coated metallic pipe |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007100961A (en) * | 2006-10-17 | 2007-04-19 | Nippon Unicar Co Ltd | Foaming polyethylene coated metallic pipe |
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| KR20170045850A (en) | 2017-04-28 |
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