KR101586232B1 - Lightweight hopping board and manufacturing method thereof - Google Patents

Abstract

Disclosed is a lightweight chopping board. According to the present invention, the lightweight chopping board comprises: inner heartwood made of wood, and formed to have a predetermined thickness, length, and width; and a first chopping board part and a second chopping board part formed by insert injection molding a synthetic resin material by interposing the inner heartwood therebetween to cover the front, the back, and the sides of the inner heartwood. Moreover, a plurality of connecting holes are punched as passing through the inner heartwood, the connecting holes are filled with a synthetic resin material when the first chopping board part and the second chopping board part are insert injection molded, and connecting parts are formed respectively so as to allow the center parts of the first chopping board part and the second chopping board part to pass through the inner heartwood and to be connected and combined with each other. Moreover, each of side wings formed in the edge parts of the first chopping board part and the second chopping board part located in the side of the inner heartwood is integrated with each other by insert injection molding. According to the present invention, a large chopping board used in a kitchen of a restaurant can be manufactured at low costs, and it is lightweight and hygienic due to insert injection molding after inner heartwood made of lightweight wood is arranged between a first chopping board part and a second chopping board part; and a lifting phenomenon of first and second chopping board parts can be prevented by connecting and combining center parts on both of the first and second chopping board parts with inner heartwood interposed therebetween by a connecting part.

Description

TECHNICAL FIELD [0001] The present invention relates to a lightweight board and a lightweight board,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a lightweight board and a method of manufacturing a lightweight board, and more particularly, to a method of manufacturing a lightweight board and a lightweight board which can manufacture a large board used in a cooking chamber of a restaurant in a sanitary manner.

In general, cutting boards are one of the kitchen utensils used to cut foodstuffs to make food. These boards must be cleaned, dried, and disinfected periodically to remove any residues of the ingredients left on the cutting board for hygiene. If you do not sterilize the residue of the ingredients left on the cutting board, the bacteria will multiply and cause various diseases. In addition, the cutting board has a small scratch due to a knife and is not easily dried due to its characteristics, and thus has an environment suitable for propagation of germs. Nevertheless, there are very few households that use sterilized cutting boards.

One of the methods for sterilizing chopping boards is generally to heat the chopping board or to sterilize the chopping board (usually a UV sterilizer). Currently, the most frequently used dishwasher for domestic or commercial use is designed to be used for sterilizing dishes, and is not suitable for sterilizing cutting boards. Therefore, it is inconvenient to use the cutting boards according to the size of the sterilizer. In addition, the disinfection apparatus for disinfecting cutting boards also has a large volume, inconvenience of storage, and the price of the product is high, so that it is generally difficult to use in households.

When such a cutting board is made of wood, the disinfection and sterilization process described above is indispensable. In the case of wood, there was a problem that the surface of the cutting board was broken by cutting, and the food was caught in this groove and was corrupted.

As a prior art for solving such a problem, Korean Patent No. 10-1167070 (Published on July 20, 2012) discloses a method for producing a kitchen board and a kitchen board having enhanced antibacterial ability. The antimicrobial strengthened cutting board comprises 50% to 97% by weight of a thermoplastic polyurethane; 1% to 40% by weight shell shell powder; And 2% by weight to 10% by weight of an additive.

By adding the shell shell powder having antimicrobial activity and deodorizing power to the thermoplastic polyurethane in such a ratio, it is possible to maintain the natural antibacterial property of the surface of the product while maintaining the properties of the thermoplastic polyurethane, which is a characteristic of the thermoplastic polyurethane, And sterilization as well as deodorizing effect at the same time, so that the kitchen board can be maintained and used more hygienically.

However, when a cutting board is made of a synthetic resin material for use in a restaurant other than a home, the weight of the cutting board is increased due to an increase in the size of the cutting board, and it is difficult to clean, disinfect and transport.

For example, a board having a thickness of 3 cm, a width of 40 cm, and a length of 60 cm weighed about 6 kg, which made transportation difficult.

As a prior art for solving such a problem, an improved board is disclosed in Korean Patent No. 10-483959 (Announcement: 2005.04.18). BACKGROUND ART [0002] As a prior art, an improvement board has a filler made of wood disposed between an upper half cover made of a synthetic resin material and a lower half cover, and an upper half cover and a lower half cover are molded to form a coupled outer ring at the edge.

However, in the modified board according to the related art of this structure, the weight of the whole board can be reduced by filling the inside of the board, and the manufacturing cost can be reduced because the consumption of the synthetic resin material is reduced. However, There is a problem in that the upper half cover and the lower half cover are separated from each other and the coupling between the upper half cover and the lower half cover is made by the coupling outer ring, There is a problem that the cover and the lower half cover can be separated.

. Korean Registered Patent No. 10-1167070 (Published on July 20, 2012) . Korean Patent No. 10-483959 (public announcement date: April 18, 2005)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a light weight board and a light weight board manufacturing method which can manufacture a large board used in a cooking chamber of a restaurant in a hygienic, light and low cost manner.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to at least partially solve the problems in the conventional arts. It can be understood.

According to the present invention, the above object can be accomplished by providing an internal core member made of wood and formed with a predetermined thickness, length and width; And a first cutting part and a second cutting part formed by insert injection molding with a synthetic resin material with the inner core interposed therebetween so as to surround the front surface, the back surface and the side surface of the inner core material with a predetermined thickness, A plurality of connection holes are drilled and a synthetic resin material is filled in the connection holes during the injection molding of the first and second boards so that an intermediate portion between the first and second boards passes through the inner core, Wherein each of the side wings formed at the edges of the first and second boards located on the side of the inner core is integrated with each other by insert injection molding. .

Wherein a coupling groove is formed to increase the coupling force between the first and second boards and to form a reinforcing portion for reinforcing the first and second boards, May be formed in a lattice form, may be formed by surface roughing, or may be formed in the form of an acid and a floor.

Wherein at least one defective groove is formed in the side wing of the first cutting part and a part of the side wing of the second cutting part is filled in the coupling groove during insert injection molding of the second cutting part, Each side wing of the cutting edge can be integrated.

The first cutting portion and the second cutting portion may be formed in different colors.

According to the present invention, the above object can be achieved by a method for manufacturing a lightweight board, comprising the steps of: a) preparing an inner core made of any one material selected from among wood, glued laminated wood, plywood and medium density fiberboard (MDF) An inner core processing step of machining the plurality of connection holes and drilling a plurality of connection holes; b) insert the inner core material processed through the inner core material processing step into an insert injection mold for molding a first cutting part for molding the first cutting part, insert injection molding a first cutting part on one side of the inner core material, A primary molding step in which a ream part is filled with the connection hole to insert-mold the insert to form a part of the connection part; And c) injecting an inner core material integrated with the first molding part through the first molding step into an insert injection mold for molding a second molding part, and insert molding a second molding part on the other side of the inner core part, A second molding part for insert injection molding so that the second cutting part surrounds the inner core part and is integrally joined with the first cutting part by forming a connection part in which a remainder is filled with the connection hole to be integrally coupled with a part of the connection part, The method of manufacturing a lightweight board according to claim 1,

Wherein the step a) includes the steps of: increasing the bonding force between the first cutting portion and the second cutting portion on the front and back surfaces of the inner core, and forming a reinforcing portion for reinforcing the first cutting portion and the second cutting portion, And forming an engaging groove portion for filling the synthetic resin material at the time of forming, wherein the engaging groove portion may be formed in an independent groove shape, a lattice shape, or a surface roughing process.

Wherein the step b) includes forming at least one defect groove in the side wing of the first cutting portion, and the step c) includes the step of forming the side wing of the second cutting portion in the coupling groove at the time of insert injection molding of the second cutting portion So that the respective side wings of the first cutting part and the second cutting part can be integrally combined.

According to the present invention, since the inner core made of light wood is disposed between the first and second boards, the insert is injection-molded so that a large board used in the cooking chamber of the restaurant is manufactured hygienically, lightly and at low cost It is possible to provide an effect that can be achieved.

In addition, since the middle portions of the first and second boards are connected to each other by the connection portion with the inner core interposed therebetween, the first and second boards can be prevented from lifting.

Also, since the joining recesses are formed on the front and back surfaces of the inner core, the reinforcing portions are formed on the first and second boards, thereby providing the effect that the first and second boards can be reinforced.

In addition, since the side wings of the first and second boards are integrally formed by the coupling grooves, the first and second board assemblies can be prevented from being separated during use of the board, and foreign matter, moisture, It is possible to provide an effect that the phenomenon of flowing into the inside of the semiconductor device can be shut off at its source.

In addition, by forming the first and second boards differently in color, it is possible to use not only the two sides of the board but also improve the appearance.

1 is a partially cutaway perspective view showing a lightweight board according to a first embodiment of the present invention.
Fig. 2 is a cross-sectional view showing the molding board shown in Fig. 1. Fig.
3 is a partially cutaway perspective view showing a lightweight board according to a second embodiment of the present invention.
4A and 4B are sectional views showing the light weight board shown in Fig.
5 is a flow chart for explaining a manufacturing process of a lightweight board according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

FIG. 1 is a partially cutaway perspective view showing a lightweight board according to a first embodiment of the present invention, and FIG. 2 is a sectional view showing a cutting board shown in FIG. 1. Referring to FIG.

1 and 2, the light weight board 10 according to the present invention includes an inner core member 40 made of wood and formed with a predetermined thickness, length and width, a surface of the inner core member 40 A first cutting part 20 and a second cutting part 20 which are formed by insert injection molding with a synthetic resin material interposed between the inner core 40 and the second cutting part 40 so as to enclose the back face 46, (30).

A plurality of connection holes 42 are pierced through the inner core member 40 and the synthetic resin material is filled into the connection holes 42 during the insert injection molding of the first cutting portion 20 and the second cutting portion 30 The connecting portions 24 and 34 are formed so that the intermediate portions between the first cutting portion 20 and the second cutting portion 30 penetrate the inner core 40 and are connected to each other, And the side wings (22, 32) formed at the edges of the first cutting part (20) and the second cutting part (30) are integrally formed by insert injection molding.

This will be described more specifically.

The inner core member 40 is made of any one material selected from a wood, a gypsum board, a plywood and a medium density fiberboard (MDF), and is used for reducing the weight of the light weight board 10 and reducing the amount of synthetic resin material used. The inner core member 40 is processed to have a predetermined thickness, length, and width, and a plurality of connection holes 42 are drilled.

At this time, on the surface 44, the back surface 46 and the side surface 48 of the inner core 40, as shown in Figs. 3 to 4B, the first cutting portion 20 and the second cutting portion The engaging groove 45 is formed to increase the engaging force between the first cutting portion 20 and the second cutting portion 30 and to form a reinforcing portion 26 for reinforcing the first cutting portion 20 and the second cutting portion 30. These engaging grooves 45 may be formed in the form of independent grooves to be in the form of a lattice as shown in Fig. 3, or may be formed by surface roughing though not shown in the figure.

As shown in FIG. 4C, the joining recesses 45 may be formed in a zigzag shape with an acid and a floor.

These engaging grooves 45 are formed in such a manner that the first cutting portion 20 and the surface 44 of the inner core 40 are firmly engaged during insert injection molding and the second cutting portion 30 and the inner core material The first and second cutting sections 20 and 30 abutting the front surface 44 and the back surface 46 of the inner core 40 and the second cutting section 30 contacting the back surface 46 of the inner core 40, Shaped reinforcing portions 26 and 36 protruding from the respective inner surfaces of the ribs.

The strength of the first cutting portion 20 and the second cutting portion 30 can be reinforced by the reinforcing portions 26 and 36 and the bonding force with the inner core 40 can be improved. When the boards 20 and 30 are used, the inner core 40 and the first and second boards 20 and 30 are prevented from lifting, thereby suppressing noise generation.

The first cutting part 20 and the second cutting part 30 are formed by insert injection molding to enclose the inner core 40 and formed on the surface 44 and the back side 46 of the inner core 40 A part of the synthetic resin material is filled with the connection hole 42 so that the intermediate part of the first cutting part 20 and the second cutting part 30 are connected and joined to each other, And the reinforcing portions 26 and 36 are formed by the engaging groove portions 45 as well as the rigid engagement with the front surface 44 and the back surface 46 of the inner core member 40 by the engaging grooves 45. [ Therefore, it is possible to prevent the inner core 40 from being separated from or separated from the first cutting portion 20 and the second cutting portion 30.

On the other hand, the side edge portions 22 and 32 of the first cutting portion 20 and the second cutting edge portion 30 corresponding to the side surface 48 of the inner core member 40 are integrally joined to each other at the time of insert injection molding This is because the engagement groove 27 is formed in the side wing 22 of the first cutting insert 20 during the primary insert injection molding and the side wing 32 of the second cutting insert 30 Is partially filled into the coupling groove 27 and hardened so that the side wings 22 and 32 of the first cutting portion 20 and the second cutting portion 30 are integrally joined together without a gap. With this structure, the phenomenon that foreign matter, foreign matter, moisture or the like is introduced into the first cutting portion 20 and the second cutting portion 30 from the outside can be originally blocked.

Extension supporting portions 25 and 35 are formed in the root regions of the connection portions 24 and 34 (portions contacting the inner surfaces of the first cutting portion and the second cutting portion) as shown in FIG. The connection strength of the connecting portions 24 and 34 connecting the intermediate portions of the first cutting portion 20 and the second cutting portion 30 can be improved by the above-described extended supporting portions 25 and 35. [ The extended supports 25 and 35 are formed by expanding and processing the entrance edges of the connection holes 42. [

Meanwhile, the first cutting unit 20 and the second cutting unit 30 may be formed in different colors. Since the first cutting portion 20 and the second cutting portion 30 are formed in different colors, the first cutting portion 20 and the second cutting portion 30 can be used for different purposes.

A process for manufacturing such a lightweight board 10 will be described.

As shown in Figs. 1 to 5, a method for manufacturing a lightweight board is as follows.

a) Internal core processing step

First, the inner core member 40 made of any one material selected from the group consisting of wood, laminated wood, plywood, and MDF is processed to have a predetermined thickness, length and width, and a plurality of connection holes 42 are drilled . At this time, both openings of the connection hole 42 are formed to be wider than the inner diameter so that the extended support portions 25 and 35 are formed in the root regions of the connection portions 24 and 34 formed by insert injection molding.

The joining recesses 45 are formed in the front face 44, the back face 46 and the side face 48 of the inner core member 40. At this time, the shape of the engaging groove 45 is not limited to any shape, and may be variously formed.

The engaging groove 45 may be formed by lengthening the grooves, forming a lattice shape as a whole, or by roughing the surface of the inner core 40, or by staggering the mountains and the floor. In the present embodiment, description will be made on the basis of forming a lattice structure as shown in Fig.

The joining recesses 45 are formed by firmly joining the first and second cutting inserts 20 and 30 to the front face 44 and the back face 46 of the inner core 40 during insert injection molding So as to minimize the generation of noise and to form a reinforcing portion 26 for reinforcing the first cutting portion 20 and the second cutting portion 30.

b) primary molding step

The inner core member 40 in which the connection hole 42 is formed and the coupling groove portion 45 is formed is formed in the first core portion forming step for forming the first cutting portion 20, The first cutting portion 20 is insert injection molded on one surface of the inner core member 40, that is, the surface 44, and a part of the synthetic resin material is filled in the connection hole 42 And insert injection molding is performed to form a part of the connecting portion 24. [

The synthetic resin material is filled in each of the engaging groove portions 45 to form a reinforcing portion 26 having a lattice structure as a whole and the reinforcing portion 26 is filled in the engaging groove portion 45 and hardened The surface 44 and a portion of the side surface 48 of the inner core 40 are firmly coupled without lifting.

On the other hand, when performing the primary molding step (a), insert injection is performed so that at least one defect groove (27) is formed at the end of the side wing (22) of the first cutting part (20).

c) Secondary molding step

The inner core member 40 integrated with the first cutting member 20 is introduced into the second injection molding insert injection mold (not shown) through the first molding step (b) to form the inner core member 40 The second cutting section 30 surrounding the other side, that is, the back side 46 is formed by insert injection molding, and a part of the synthetic resin material is filled with the connection hole 42, The second cutting portion 30 is formed integrally with the first cutting portion 20 so as to surround the inner core 40. The second cutting portion 30 is formed integrally with the first cutting portion 20, The insert injection molding is performed.

The first and second cutting portions 20 and 30 may be formed by filling a part of the side wings 32 of the second cutting portion 30 in the coupling groove 27 during the insert injection molding of the second cutting portion 30, So that the side wings (22, 32) of the side plate (30) are integrally joined. By this insert injection molding method, the side wings 22 and 32 of the first cutting portion 20 and the second cutting portion 30 are tightly and integrally joined together without any gaps, so that foreign matter or water does not permeate between them.

As described above, by forming the first cutting portion 20 and the second cutting portion 30 by insert injection molding so as to enclose the inner core 40 processed with the connection hole 42 and the coupling groove 45, Since the first cutting portion 20 and the second cutting portion 30 are integrally formed, foreign matter or water does not flow into the first cutting portion 20 and the first cutting portion 20, The first cutting portion 20 and the second cutting portion 30 are connected to each other by the coupling groove portion 45 formed by the inner core member 40 and the intermediate portion between the first cutting portion 20 and the second cutting portion 30 by the connecting portions 24 and 34, And the inner core member 40 is improved, so that the lifting phenomenon can be prevented even if the board is used.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious to those who have. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.

10 Lightweight board 20: First board 20
22, 32: side wings 24, 34:
25, 35: extension supporting portions 26, 36: reinforcing portion
30: second board 40: inner core
42: connecting hole 44: surface
45: engaging groove
46: side 48: side

Claims (7)

delete An inner core made of wood and having a predetermined thickness, length and width;
And a first cutting part and a second cutting part formed by insert injection molding with a synthetic resin material interposed between the inner core and the inner core so as to surround the front surface, back surface and side surface of the inner core material with a predetermined thickness,
Wherein a plurality of connection holes are drilled through the inner core member and a synthetic resin material is filled in the connection hole during the insert injection molding of the first and second chambers so that an intermediate portion between the first and second chambers forms the inner core member Each of the side wings formed at the edges of the first and second boards positioned on the side of the inner core is integrated with each other by insert injection molding,
On the front and back surfaces of the inner core,
Wherein a coupling groove is formed to increase a coupling force between the first cutting portion and the second cutting portion and to form a reinforcing portion for reinforcing the first cutting portion and the second cutting portion, Or formed by surface roughing, or formed in the form of an acid and a floor.
Lightweight chopping board. 3. The method of claim 2,
Wherein at least one defective groove is formed in the side wing of the first cutting part and a part of the side wing of the second cutting part is filled in the coupling groove during insert injection molding of the second cutting part, Characterized in that the respective side wings of the cutting board are integrated,
Lightweight chopping board. The method according to claim 2 or 3,
Characterized in that the first and second cutting sections are formed in different colors,
Lightweight chopping board. A method for making a lightweight board,
a) an inner core material processing step of processing an inner core made of any one material selected from among wood, gravel, plywood, and MDF to a predetermined thickness, length and width, and punching a plurality of connection holes;
b) insert the inner core material processed through the inner core material processing step into an insert injection mold for molding a first cutting part for molding the first cutting part, insert injection molding a first cutting part on one side of the inner core material, A primary molding step in which a ream part is filled with the connection hole to insert-mold the insert to form a part of the connection part; And
c) an inner core integrated with the first cutting part is inserted into the insert injection mold for forming the second cutting part through the first molding step, and a second cutting part is insert injection molded on the other side of the inner core, A second molding step of insert injection molding such that the second molding part is integrally coupled with the first molding part while enclosing the inner core part is formed by forming a connection part which is partially filled with the connection hole to be integrally coupled with a part of the connection part, ≪ / RTI >
Method of manufacturing a lightweight board. 6. The method of claim 5,
In the internal core material processing step,
On the front and back surfaces of the inner core,
A coupling groove portion for filling a synthetic resin material during insert injection molding is formed so as to increase a coupling force between the first cutting portion and the second cutting portion and to form a reinforcing portion for reinforcing the first cutting portion and the second cutting portion, Characterized in that the grooves further comprise forming in an independent groove shape, lattice shape or surface roughing.
Method of manufacturing a lightweight board. The method according to claim 5 or 6,
Wherein the primary forming step comprises:
At least one defect groove is formed in the side wing of the first cutting portion,
Wherein the secondary molding step comprises:
And the side blades of the first cutting part and the second cutting part are integrally joined by inserting a part of the side blades of the second cutting part into the coupling groove during the insert injection molding of the second cutting part.
Method of manufacturing a lightweight board.

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