KR101798468B1 - Apparatus of Wood Plastic Composite integrated with Mesh Plate and Manufacturing Method of Wood Plastic Composite integrated with Mesh Plate using therof - Google Patents

Abstract

The present invention relates to an apparatus for manufacturing a synthetic wood product integrated with a mesh plate and a manufacturing method thereof. An extruded article input from an extruder is conveyed to the upper part of an adhesion unit through two conveying pipes and then to the lower part of the adhesion unit through the two conveying pipes. A preheated mesh plate is conveyed to the center of the adhesion unit to integrate the mesh plate with the center part of a synthetic wood product. The synthetic wood product has excellent workability. The apparatus optimizes the temperature of a preheating roller and the moving speed of the mesh plate to make the upper and lower surfaces of the preheated mesh plate sticky, thereby integrating the mesh plate with the synthetic wood product. The synthetic wood product has excellent tensile strength, bending strength and compressive strength as well as excellent thermal stability against temperature changes to reduce the shrinkage and expansion rates.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of manufacturing a synthetic wood material having a mesh plate integrated with a mesh plate, and a method of manufacturing a synthetic wood material using the same,

The present invention relates to a synthetic wood manufacturing apparatus in which a mesh plate is integrated and a method of manufacturing a synthetic wood integrally formed with a mesh plate. More particularly, the present invention relates to a synthetic wood material, And to a method for manufacturing a synthetic wood product in which a mesh plate is integrated and a method for manufacturing a synthetic wood in which a mesh plate is integrated, which is capable of improving the compressive strength and reducing the shrinkage expansion rate.

Wood plastic composites are made by mixing wood fiber (wood powder) with thermoplastic polymers (polyethylene, polypropylene, polyvinyl chloride, etc.) and finally extruding the individual wood fibers in a completely encapsulated state by the molten polymer Refers to materials that are molded by injection molding.

In the case of developed countries, the use of synthetic wood has many advantages over plastics-only products or wood-only products, considering health and environmental considerations and products related to food and shelter needed for our daily lives. It has stronger physical properties by melting and infiltrating plastics into wood powder, and it is stronger from water absorption and attack by mold and insects, and by using recycled wood, it can reduce carbon emissions and produce various shapes and colors. It is used for flooring, window frames, door frames, soundproof walls, fences, automobile interiors, tableware, and mobile phones. It is used in various fields with many advantages such as weight, aesthetics, It is widely used in our life because of production and processing.

Synthetic wood is a material that complements the disadvantages of wood and plastic. That is, it is excellent in the resistance to water, humidity, and durability, and it does not have swelling, shrinkage and distortion due to moisture. In addition, it is environment-friendly because it does not dissipate formaldehyde or volatile organic compound (VOC), and it is the most ideal material for exterior material because it is excellent in weatherability and insectproofness without additional preservative treatment. The produced products are flooring, Exterior finishing materials and so on.

The synthetic wood industry has already grown to the point of threatening the share of natural wood in some applications. It was prevalent in North America in the early 1990s and gradually spreading in India, Singapore, Malaysia, China and Japan in the 21st century. It is also reported that in the next decade Europe will be more applied to building and infrastructure construction, automobiles and furniture.

Synthetic wood has a tendency to prefer synthetic wood rather than wood to floor finishing panels, pillars, walls, and decking materials for building roofs in recent years because of its excellent texture and easy construction. The cost is lower than that of wood, but the strength is lower than that of wood or synthetic resin material, so it is necessary to insert the reinforcing core material.

In other words, it is essential to reinforce the member using the synthetic wood by reinforcing core material in order to sufficiently secure the strength as a building material. However, although the conventional synthetic wood is constructed by inserting the reinforcing core material, there is a problem that the rigidity is insufficient and deformation occurs.

The present applicant has filed and filed an application for a method of manufacturing a synthetic wood material structure in Korean Patent Registration No. 10-1209776 (2012.12.07.).

The method of manufacturing the synthetic wood deck structure is advantageous in that the core embedded in the synthetic wood deck body is a string made of polyester fiber and the string is made of a ladder-like core to prevent deformation of the synthetic wood deck.

A step of preparing a polyester fiber base cord 3a for making a cord having an outer diameter of 4 to 6 mm by twisting the polyester fiber into a rope shape, a step of laminating the base cord in a length of 4 to 5 cm, A step of preparing a cord 3b and a step of supplying a base cord 3a for supplying the base cord on the conveyor belt side by side at intervals of 3 to 4 cm and a step of feeding the base cord at intervals of 4 to 5 cm in the longitudinal direction, A connecting cord feeding step of feeding the connecting ropes 3b one by one in a direction perpendicular to each other, and a heating and pressing rods being vertically operated while passing the cord between the heating and crimping portions of the high- A ladder-like core body (3) made of polyester fibers for producing a ladder-like core by heat-joining both ends of a connecting cord on a cord, And a ladder-type core body made of polyester fiber is put into a synthetic wood extrudate to be extruded by putting the ladder-like core body into an extruding section of a synthetic wood extruder (i), and extruding the extruded body into a conveyor belt (j), and then solidifying the product while transferring the product to the mold (j). In this case, the manufacturing method is too complicated, resulting in poor workability and a problem that the degree of improvement in tensile strength, bending strength, compressive strength and degree of shrinkage expansion is insufficient have.

KR 10-1209776 B1 2012.12.07.

The present invention relates to a synthetic wood manufacturing apparatus in which a mesh plate integrated with a mesh plate is integrated with a mesh plate of a synthetic resin material by integrating a central portion of a synthetic wood to improve a tensile strength, a bending strength and a compressive strength, The present invention provides a method for producing a synthetic wood which comprises

In order to achieve the above object, the present invention provides the following means.

The present invention relates to a synthetic wood composition comprising a hopper into which a composition for synthetic wood is introduced, a heating cylinder provided below the hopper for dissolving the synthetic wood composition by heating the heater, An extruder including an extrusion screw to be extruded; A transfer unit for transferring the extrudate introduced through the extruder to the adhering unit; A mesh plate roll on which the mesh plate is wound on the outer circumferential surface; A preheater for feeding the mesh plate and applying heat to the mesh plate; A bonding portion for bonding the preheated mesh plate to a center portion of the extruded material flowing from the feed portion; A mold for producing an extrudate adhered to the center portion of the mesh plate as a synthetic wood extrudate; And a cooling unit for cooling and molding the synthetic wood extrudate drawn from the mold; Wherein the mesh plate is integrally formed.

The conveying unit may include an upper first conveyance pipe, an upper second conveyance pipe horizontally spaced apart from the upper first conveyance pipe, a lower third conveyance pipe vertically spaced apart from the upper first conveyance pipe, And a lower fourth transfer pipe formed horizontally spaced apart from the lower third transfer pipe.

The mesh plate may be any one selected from the group consisting of a polyethylene mesh plate, a polypropylene mesh plate, and a nylon mesh plate. The preheating unit includes a preheating roller, a heater, and a temperature control sensor for applying heat to the mesh plate.

Further, the present invention is characterized in that the synthetic wood composition put into the hopper constituting the extruder is dissolved in the heating cylinder liner by heating the heater, and the dissolved synthetic wood composition is supplied to the extrusion head at the tip through the extrusion screw Extruding (step 1); The extruded material flowing through the extruder is divided into an upper first transfer pipe, an upper second transfer pipe formed horizontally spaced apart from the upper first transfer pipe, a lower second transfer pipe vertically spaced apart from the upper first transfer pipe, (Step 2) of uniformly transferring the third transfer pipe and the lower third transfer pipe through a lower fourth transfer pipe formed horizontally spaced apart from the first transfer pipe; Passing the mesh plate wound on the outer circumferential surface of the mesh plate roll through a preheat roller while applying heat to the adhesion unit (step 3); (Step 4) of adhering the preheated mesh plate to the center portion of the extruded material flowing in from the transfer unit in the adhering unit; (Step 5) of producing an extrudate adhered to the center portion of the mesh plate through a mold to a synthetic wood extrudate; And cooling molding the synthetic wood extrudate drawn from the mold through a cooling section (step 6); The present invention also provides a method for producing a synthetic wood in which a mesh plate is integrated.

Wherein the synthetic wood composition comprises 55 to 65 wt% of wood powder, 20 to 30 wt% of synthetic resin, 5 to 15 wt% of talc, 5 to 15 wt% of a flame retardant, 2 to 5 wt% of a binder, 5 to 5% by weight of wood powder and 65 to 75 parts by weight of rice straw powder in 100 parts by weight of hardwood powder, and the synthetic resin comprises 90 to 100 parts by weight of HDPE in 100 parts by weight of polypropylene, , Maleic anhydride PP is used as the binder, and the additive is at least one selected from the group consisting of an inorganic pigment, an antioxidant, a UV stabilizer, an ultraviolet absorber, a lubricant and an antibacterial agent.

In step 3, the mesh plate is formed in a lattice shape, and a plurality of lattice holes are formed therein, the length of one side of the lattice hole is 20 to 25 mm, and the thickness of the mesh plate is 3 mm.

In the step 3, when the polyethylene mesh plate is used as the mesh plate, the temperature of the preheating roller is set to 150 to 165 ° C. When the polypropylene mesh plate is used as the mesh plate, the temperature of the preheating roller is set to 175 When the nylon mesh plate is used as the mesh plate, the temperature of the preheating roller is set to 205 to 220 ° C, and the mesh plate is moved at a speed of 300 to 500 mm per minute by the preheating roller .

In the step 3, the molten thickness of the mesh plate after passing between the preheating rollers is 0.5 mm on the upper side of the mesh plate and 0.5 mm on the lower side of the mesh plate.

The synthetic wood manufacturing apparatus in which the mesh plate according to the present invention is integrated is characterized in that the compressed material introduced from the extruder is transferred to the upper portion of the adhering portion through the two conveying pipes and transferred to the lower portion of the adhering portion through the two conveying pipes, Is transferred to the center of the adhering portion, the mesh plate is integrated with the center portion of the synthetic wood, which is advantageous in that the workability is very excellent.

The method of manufacturing synthetic wood integrated with a mesh plate according to the present invention optimizes the temperature of the preheating roller and the moving speed of the mesh plate so that the upper and lower surfaces of the preheated mesh plate become sticky so that the synthetic wood and the mesh plate are integrated There is one advantage.

The synthetic wood having the mesh plate according to the present invention is excellent in tensile strength, bending strength and compressive strength, and is excellent in thermal stability according to temperature change, and thus has an advantage of reducing shrinkage expansion rate.

1 is a perspective view of a synthetic wood manufacturing apparatus in which a mesh plate according to the present invention is integrated.
2 is a sectional view of a synthetic wood manufacturing apparatus in which a mesh plate according to the present invention is integrated.
Fig. 3 is a perspective view of synthetic wood integrated with a mesh plate according to the present invention.

Hereinafter, the present invention will be described in detail.

FIG. 1 is a perspective view of a synthetic wood manufacturing apparatus 100 integrated with a mesh plate according to the present invention, FIG. 2 is a sectional view of a synthetic wood manufacturing apparatus 100 incorporating a mesh plate according to the present invention, and FIG. 1 is a perspective view of a synthetic wood 200 integrated with a mesh plate.

First, a synthetic wood manufacturing apparatus 100 in which a mesh plate according to the present invention is integrated will be described with reference to FIGS. 1 to 3. FIG.

The synthetic wood manufacturing apparatus 100, in which the mesh plate according to the present invention is integrated,

A hopper (11) into which a composition for synthetic wood is fed; a heating cylinder provided below the hopper for dissolving the synthetic wood composition by heating the heater; and a melted synthetic wood composition in the heating cylinder An extruder (10) comprising an extruding screw (15) for extruding;

A transfer unit 20 for transferring the extrudate introduced through the extruder 10 to the adhering unit 40;

A mesh plate roll (30) having a mesh plate (31) wound on the outer peripheral surface;

A preheating unit 33 for feeding the mesh plate 31 and applying heat to the mesh plate 31;

A bonding portion 40 for bonding the preheated mesh plate 31 to the central portion of the extrudate introduced from the transfer portion 20;

A mold 50 for producing an extrudate with the mesh plate 31 adhered to the center thereof as a synthetic wood extrudate; And

A cooling unit 60 for cooling and molding the synthetic wood extrudate drawn from the mold 50;

.

The extruding screw 15 installed in the extruder 10 is rotated by the motor 13 installed at the rear end of the extruder 10 to extrude the dissolved synthetic wood composition in the extruder 10.

The extruder (10) is further provided with an extrusion portion (17) in which the diameter of the tube is narrowed in the extrusion head. The reason why the diameter of the extrusion portion 17 is formed to be narrower than the diameter of the heating cylinder is to remove bubbles of synthetic wood.

In the present invention, the transfer unit 20 is composed of an upper first transfer pipe 21, an upper second transfer pipe 23 formed horizontally spaced apart from the upper first transfer pipe 21, A lower third conveyance pipe 25 formed vertically spaced apart from the first lower conveyance pipe 21 and a lower fourth conveyance pipe 27 formed horizontally spaced apart from the lower third conveyance pipe 25 .

The extrudate introduced through the extruding part 17 is uniformly distributed to the four transfer pipes 21, 23, 25, 27 and transferred.

The upper first transfer pipe 21 and the lower third transfer pipe 25 are vertically spaced apart from each other by a predetermined distance and the upper second transfer pipe 23 and the lower fourth transfer pipe 27 are vertically arranged The reason why the mesh plate 31 is spaced apart at regular intervals is that the mesh plate 31 is adhered to the center of the extruded material flowing out from the upper conveyance pipes 21 and 23 and the extruded material flowing out from the lower conveyance pipes 25 and 27 to be.

The upper first transfer pipe 21 and the upper second transfer pipe 23 are horizontally spaced apart from each other and the lower third transfer pipe 25 and the lower fourth transfer pipe 27 are horizontally The reason why the mesh plate plate 30 is spaced apart at regular intervals is to provide the mesh plate plate 30 in which the mesh plate 31 is wound on the outer circumferential surface in a spaced space.

The present invention is characterized in that the use of the mesh plate (31) as a core material of synthetic wood improves the tensile strength, the bending strength and the compressive strength, and the shrinkage expansion rate can be reduced.

The mesh plate 31 may be any one selected from the group consisting of a polyethylene mesh plate, a polypropylene mesh plate, and a nylon mesh plate.

The mesh plate 31 drawn out from the mesh plate roll 30 is transferred to the bonding portion 40 through the preheating portion 33 so that the mesh plate 31 is positioned at the center portion of the synthetic wood, Is very simple and has a very excellent processability.

The preheating unit 33 includes a preheating roller 35 for applying heat to the mesh plate 31, a heater (not shown), and a temperature control sensor (not shown).

The preheating roller 35 may have a plurality of pairs of upper and lower portions to which the mesh plate 31 is fed so as to apply heat to the mesh plate 31.

The present invention is characterized in that the upper and lower surfaces of the mesh plate 31 preheated from the preheating roller 35 are in a sticky state so that the adhesion portion 40 is excellent in adhesion with the extrudate.

The adhering portion 40 receives the extrudate conveyed from the upper first conveyance pipe 21 and the upper second conveyance pipe 23 upward and the lower third conveyance pipe 25 and the lower fourth conveyance pipe 23, The extrudate conveyed from the extruder 27 is introduced into the lower portion and the preheated mesh plate 31 is introduced into the center portion so that the mesh plate 31 is adhered at the center portion of the extrudate.

The metal mold 50 may be produced by extruding the mesh plate 31, which is adhered to a central portion thereof, in a predetermined synthetic wood form.

The cooling unit 60 may cool-mold the synthetic wood extrudate drawn from the mold 50. The mold 50 and the cooling unit 60 are generally used in a synthetic wood manufacturing apparatus, and a detailed description thereof will be omitted.

1 to 3, a method for manufacturing a synthetic wood in which a mesh plate according to the present invention is integrated will be described.

A method for manufacturing a synthetic wood in which a mesh plate according to the present invention is integrated,

The composition for synthetic wood charged into the hopper 11 constituting the extruder 10 is dissolved in the heating cylinder liner by heating the heater and the dissolved synthetic wood composition is fed through the extruding screw 15 to the extrusion head (Step 1);

The extruded material flowing through the extruder 10 is conveyed to the upper first conveyance pipe 21, the upper second conveyance pipe 23 formed horizontally spaced apart from the upper first conveyance pipe 21, 1 through the lower third transfer pipe 25 and the lower fourth transfer pipe 27 horizontally spaced from the lower third transfer pipe 25 by a predetermined distance from the first transfer pipe 21, (Step 2);

Passing the mesh plate 31 wrapped around the outer circumferential surface of the mesh plate roll 30 through the preheating rollers 35 while applying heat to the bonding plate 40 (step 3);

So that the preheated mesh plate 31 is adhered to the central portion of the extruded material flowing from the transfer unit 20 in the adhering unit 40 (step 4);

(Step 5) of producing an extrudate bonded to the center of the mesh plate 31 through a mold 50 as a synthetic wood extrudate; And

A step (6) of cold-molding the synthetic wood extrudate drawn out from the mold (50) through the cooling section (60);

.

Wherein the synthetic wood composition comprises 55 to 65% by weight of wood powder, 20 to 30% by weight of synthetic resin, 5 to 15% by weight of talc, 5 to 15% by weight of flame retardant, 2 to 5% And 1 to 5% by weight of an additive, wherein the wood powder comprises 65 to 75 parts by weight of rice straw powder in 100 parts by weight of the hardwood water powder, the synthetic resin comprises 90 to 100 parts by weight of HDPE in 100 parts by weight of polypropylene, Maleic Anhydride PP is used as the binder, and the additive may be selected from the group consisting of an inorganic pigment, an antioxidant, a UV stabilizer, an ultraviolet absorber, a lubricant and an antibacterial agent.

In the step 3, the mesh plate 31 may be any one selected from the group consisting of a polyethylene mesh plate, a polypropylene mesh plate, and a nylon mesh plate.

The mesh plate 31 is formed in a grid shape, and a plurality of grid holes are formed therein. The length of one side of the lattice hole is preferably 20 to 25 mm. If the length of one side of the lattice hole is less than 20 mm, the adhesive strength to the extrudate may be deteriorated. If the length of one side of the lattice hole is more than 25 mm, the tensile strength is lowered.

The thickness of the mesh plate 31 is preferably 3 mm. If the thickness of the mesh plate 31 is less than 3 mm, there is a problem that the compressive strength is lowered. If the thickness of the mesh plate 31 is more than 3 mm, there is a problem that the adhesive force with the extrudate is inferior.

When a polyethylene mesh plate is used as the mesh plate 31, the temperature of the preheating roller 35 is preferably set to 150 to 165 ° C. When the mesh plate 31 is a polypropylene mesh plate, It is preferable to set the temperature of the preheating roller 35 to 175 to 190 ° C and to set the temperature of the preheating roller 35 to 205 to 220 ° C in the case of using the nylon mesh plate as the mesh plate 31 desirable.

If the temperature of the preheating roller 35 is less than the lower limit value, there is a problem that the adhesive force with the extrudate is lowered. If the temperature of the preheating roller 35 exceeds the upper limit, the shape of the mesh plate 31 can be maintained There is no problem.

The mesh plate 31 is preferably moved at a speed of 300 to 500 mm per minute by the preheating roller 35. If the moving speed of the mesh plate 31 is less than 300 mm per minute, there is a problem that the shape of the mesh plate 31 can not be maintained. If the moving speed of the mesh plate 31 exceeds 500 mm per minute, There is a problem that the adhesive strength is lowered.

The molten thickness of the mesh plate 31 after passing between the preheating rollers 35 is preferably 0.5 mm on the upper side of the mesh plate 31 and 0.5 mm on the lower side of the mesh plate 31. If the molten thickness of the mesh plate 31 after passing between the preheating rollers 35 is less than 0.5 mm on each of the upper and lower sides, there is a problem that the mesh plate 31 is not integrated with the extrudate, There is a problem that the shape of the mesh plate 31 can not be maintained if the molten thickness of the mesh plate 31 exceeds 0.5 mm each on the upper side and the lower side.

In the present invention, the temperature of the preheating roller 35 and the moving speed of the mesh plate 31 are limited as described above, so that the upper and lower surfaces of the preheated mesh plate 31 become sticky, Is excellent in adhesion with the extrudate.

In the step 4, the extrudate conveyed from the upper first conveyance pipe 21 and the upper second conveyance pipe 23 is introduced into the upper portion of the adhesive portion 40, and the lower third conveyance pipe 25 and the lower The extrudate conveyed from the fourth conveyance pipe 27 flows downward and the preheated mesh plate 31 flows into the central portion so that the mesh plate 31 is adhered at the center of the extrudate.

The synthetic wood manufacturing apparatus 100 in which the mesh plate according to the present invention is integrated transfers the compressed material introduced from the extruder 10 to the upper portion of the adhering portion 40 through the two conveyance pipes, 40 and the preheated mesh plate 31 is transferred to the center of the bonding portion 40 so that the mesh plate 31 is integrated with the center portion of the synthetic wood.

The method of manufacturing synthetic wood integrated with the mesh plate according to the present invention optimizes the temperature of the preheating roller 35 and the moving speed of the mesh plate 31 so that the upper and lower surfaces of the preheated mesh plate 31 become sticky So that the synthetic wood and the mesh plate 31 are integrated with each other.

The synthetic wood 200 integrated with the mesh plate according to the present invention is excellent in tensile strength, bending strength and compressive strength, and is excellent in thermal stability in response to temperature change, thereby reducing shrinkage and expansion rate.

Hereinafter, the constitution and effects of the present invention will be described in more detail through examples. These embodiments are only for illustrating the present invention, and the scope of the present invention is not limited by these embodiments.

65 parts by weight of rice straw was mixed with 100 parts by weight of hardwood, and the resulting mixture was pulverized to a particle size of 60 mesh using a pulverizer and stirred at 110 캜 for 30 minutes to obtain 3.5% by weight of wood powder Respectively. The mixture was mixed with a blender at 55 ° C for wood powder, 20% for synthetic resin, 5% for talc, 5% for flame retardant, 5% for binder and 5% for additive, To form a composition for high strength synthetic wood. The synthetic resin was prepared by mixing 100 parts by weight of polypropylene with 100 parts by weight of HDPE. The flame retardant agent was used. The binder used was maleic anhydride PP. The adhesive was prepared by mixing 50 parts by weight of an acrylic resin, 10 parts by weight of a polyester resin, 10 parts by weight of silicon dioxide, 5 parts by weight of calcium oxide, 5 parts by weight of calcium sulfate, 3 parts by weight of alumina and 3 parts by weight of magnesium chloride And 3 parts by weight of water were mixed. The additive used was 1.5% by weight of an inorganic pigment, 0.3% by weight of an antioxidant, 0.2% by weight of a UV stabilizer, 0.5% by weight of an ultraviolet absorber, 1.5% by weight of a lubricant and 1% by weight of an antibacterial agent. The antioxidant used was 2,6-di-t-butyl-1-hydroxy-4-methylbenzene, and the UV stabilizer was Bis (2.2.6.6-tetramethyl-4piperidyl) (2'-hydroxyl-3'-tert-butyl-5'-methyl-phenyl) -5-chlorobenzotriazole was used as the ultraviolet absorber. Polyethylene wax was used as the lubricant and the zeolite antimicrobial agent Respectively. The composition for synthetic wood charged into the hopper 11 constituting the extruder 10 is dissolved in the heating cylinder liner by heating the heater and the dissolved synthetic wood composition is extruded through the extrusion screw 15 Head and extruded. The extruded material flowing through the extruder 10 is conveyed to the upper first conveyance pipe 21, the upper second conveyance pipe 23 formed horizontally spaced apart from the upper first conveyance pipe 21, 1 through the lower third transfer pipe 25 and the lower fourth transfer pipe 27 horizontally spaced from the lower third transfer pipe 25 by a predetermined distance from the first transfer pipe 21, And transferred uniformly to the bonding portion 40. The mesh plate 31 wound on the outer circumferential surface of the mesh plate roll 30 is passed through the preheating rollers 35 while being heated and then transferred to the adhesion section 40. As the mesh plate 31, a polypropylene mesh plate was used. The length of one side of the mesh plate 31 was 20 mm, and the thickness of the mesh plate 31 was 3 mm. The temperature of the preheating roller 35 was set at 175 ° C and the mesh plate 31 was moved at a speed of 300 mm per minute by the preheating roller 35. The extrudate conveyed from the upper first conveyance pipe 21 and the upper second conveyance pipe 23 flows upward from the adhering portion 40 and flows through the lower third conveyance pipe 25 and the lower fourth conveyance pipe The preheated mesh plate 31 is introduced into the center portion so that the mesh plate 31 is adhered to the center portion of the extrudate. The extruded material to which the mesh plate 31 was adhered to the center portion was made into a synthetic wood extrudate through a mold 50. The synthetic wood extrudate drawn out from the metal mold (50) was cooled and molded through a cooling section (60).

[Comparative Example 1]

A synthetic wood material structure was prepared by the manufacturing method disclosed in Korean Patent Publication No. 10-1209776 (2012.12.07.).

[Experimental Example 1]

The specimens of the synthetic wood prepared in Example 1 and Comparative Example 1 were measured according to the following method, and the results are shown in Table 1.

division Example 1 Comparative Example 1 How to measure Tensile strength (N / ㎣) 205 160 KS M 3381 Bending strength (N / ㎣) 186 175 KS M 3382 Compressive strength (N / ㎣) 144 110 KS M 3383

Table 1 shows that the synthetic wood in which the mesh plates produced in Example 1 were integrated had a higher tensile strength, bending strength and compressive strength than the synthetic wood in which the polyester fibers prepared in Comparative Example 1 were twisted into a rope-like twisted cord .

[Experimental Example 2]

The coefficient of linear thermal expansion of the synthetic wood prepared in Example 1 and Comparative Example 1 was measured and the results are shown in Table 2. The linear thermal expansion coefficient was measured according to the linear thermal expansion coefficient measurement method of KS M 3060 plastic.

division Example 1 Comparative Example 1 Coefficient of linear thermal expansion (1 / 캜) 1.3 x 10 ^-5 2.9 x 10 ^-5

According to Table 2, the synthetic wood having the mesh plate integrated in Example 1 has a significantly improved thermal stability according to the temperature change compared to the synthetic wood having the rope-like twisted polyester fiber produced in Comparative Example 1 It can be seen that

10: extruder
11: hopper 13: motor
15: extrusion screw 17: extrusion part
20:
21: upper first transfer pipe 23: upper second transfer pipe
25: lower third conveyance pipe 27: lower fourth conveyance pipe
30: mesh plate roll 31: mesh plate
33: preheating part 35: preheating roller
40: Adhesive part 50: Mold
60: cooling section
100: Synthetic wood manufacturing equipment integrated with mesh plate
200: Synthetic wood with integrated mesh plate.

Claims (8)

A hopper to which a composition for synthetic wood is injected; a heating cylinder provided at a lower portion of the hopper for dissolving the synthetic wood composition by heating the heater; and an extruder for extruding the dissolved synthetic wood composition in the heating cylinder An extruder including a screw;
A transfer unit for transferring the extrudate introduced through the extruder to the adhering unit;
A mesh plate roll on which the mesh plate is wound on the outer circumferential surface;
A preheater for feeding the mesh plate and applying heat to the mesh plate;
A bonding portion for bonding the preheated mesh plate to a center portion of the extruded material flowing from the feed portion;
A mold for producing an extrudate adhered to the center portion of the mesh plate as a synthetic wood extrudate; And
A cooling unit for cooling and molding the synthetic wood extrudate drawn from the mold;
/ RTI >
A synthetic wood manufacturing apparatus in which a mesh plate is integrated.
The image forming apparatus according to claim 1,
An upper first conveyance pipe, an upper second conveyance pipe horizontally spaced apart from the upper first conveyance pipe, a lower third conveyance pipe vertically spaced apart from the upper first conveyance pipe and a lower third conveyance pipe vertically spaced from the upper first conveyance pipe, And a lower fourth transfer pipe formed horizontally spaced apart from the transfer pipe.
A synthetic wood manufacturing apparatus in which a mesh plate is integrated.
3. The method of claim 2,
The mesh plate may be any one selected from the group consisting of a polyethylene mesh plate, a polypropylene mesh plate, and a nylon mesh plate,
Wherein the preheating unit includes a preheating roller for applying heat to the mesh plate, a heater, and a temperature control sensor,
A synthetic wood manufacturing apparatus in which a mesh plate is integrated.
Dissolving the synthetic wood composition put into the hopper constituting the extruder by heating the interior of the heating cylinder liner with the heater and supplying the dissolved synthetic wood composition to the extrusion head at the front end through the extrusion screw for extrusion );
The extruded material flowing through the extruder is divided into an upper first transfer pipe, an upper second transfer pipe formed horizontally spaced apart from the upper first transfer pipe, a lower second transfer pipe vertically spaced apart from the upper first transfer pipe, (Step 2) of uniformly transferring the third transfer pipe and the lower third transfer pipe through a lower fourth transfer pipe formed horizontally spaced apart from each other at a predetermined interval;
Passing the mesh plate wound on the outer circumferential surface of the mesh plate roll through a preheat roller while applying heat to the adhesion unit (step 3);
(Step 4) of adhering the preheated mesh plate to the center portion of the extruded material flowing in from the transfer unit in the adhering unit;
(Step 5) of producing an extrudate adhered to the center portion of the mesh plate through a mold to a synthetic wood extrudate; And
Cooling the synthetic wood extrudate drawn from the mold through a cooling section (step 6);
/ RTI >
A method for producing a synthetic wood in which a mesh plate is integrated.
5. The method according to claim 4, wherein in the step (1)
The composition includes 55 to 65% by weight of wood powder, 20 to 30% by weight of synthetic resin, 5 to 15% by weight of talc, 5 to 15% by weight of a flame retardant, 2 to 5% by weight of a binder, 1 to 5% by weight of an adhesive and 1 to 5% Wherein the wood powder comprises 65 to 75 parts by weight of rice straw powder in 100 parts by weight of the hardwood powder, and the synthetic resin comprises 90 to 100 parts by weight of HDPE in 100 parts by weight of polypropylene, and the binder is merleeenhydride polypropylene Maleic anhydride PP), and the additive is at least one selected from the group consisting of an inorganic pigment, an antioxidant, a UV stabilizer, an ultraviolet absorber, a lubricant and an antibacterial agent.
A method for producing a synthetic wood in which a mesh plate is integrated.
5. The method of claim 4, wherein in step 3,
The mesh plate is formed in a lattice shape, and a plurality of grid holes are formed therein,
The length of one side of the grid hole is 20 to 25 mm,
The thickness of the mesh plate is 3 mm,
A method for producing a synthetic wood in which a mesh plate is integrated.
7. The method of claim 6, wherein in step 3,
When a polyethylene mesh plate is used as the mesh plate, the temperature of the preheating roller is set to 150 to 165 ° C. When the mesh plate is used as the polypropylene mesh plate, the temperature of the preheating roller is set to 175 to 190 ° C When the nylon mesh plate is used as the mesh plate, the temperature of the preheating roller is set to 205 to 220 ° C,
Wherein the mesh plate is moved at a speed of 300 to 500 mm per minute by the preheating roller,
A method for producing a synthetic wood in which a mesh plate is integrated.
8. The method of claim 7, wherein in step 3,
The molten thickness of the mesh plate after passing between the preheating rollers is 0.5 mm on the upper side of the mesh plate and 0.5 mm on the lower side of the mesh plate.
A method for producing a synthetic wood in which a mesh plate is integrated.

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