JPH0345227A - Chopping board - Google Patents

Abstract

PURPOSE:To obtain hygienic and sturdy chopping board without causing any deformation such as warp, and separation by pasting a board material to both sides of a core material part formed with materials having directional properties combined in different directions approximately on the same plane. CONSTITUTION:A core material part of relatively light weight and excellent rigidity is formed with materials having directional properties in strength such as wood, bamboo or other natural products or fiber reinforced plastics, metal or the like containing major fibers unidirectionally aligned. Rigidity available therefrom is used to prevent warp and twist due to the elongation, contraction and swelling of different or same types of materials pasted to both upper and lower surfaces of the core material part. For example, a core material 23 is formed with four wooden cores having different directional properties, and so combined on the same plane that grain direction will be in parallel to each side of a chopping board. The grain direction of a surface chopping board material 21 is toward the length-wise direction of a chopping board, the grain direction of core materials 24 and 25 are approximately in parallel thereto, intersecting the grain direction of other core materials 26 and 27 orthogonally. The wooden chopping board material 21 is pasted to one side of the aforesaid core materials, and a synthetic resin chopping board material 22 is pasted to the other side, thereby forming the chopping board.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a cutting board, and more particularly, to a cutting board that has a multilayer structure, unlike conventional cutting boards that have a wood or plastic veneer structure.

[Prior Art] Conventionally, cutting boards for cooking have a veneer structure made of wood or plastic and are widely used. However, for example, wooden veneer structures are easy to use because they are light and have good contact with the knife blade, but when cooking fish or meat, capillary action occurs due to the narrow grooves carved by the knife blade and the cuts across the board. This has caused problems such as juices and other substances seeping in, leaving behind odors and becoming a source of bacteria. Synthetic resin cutting boards are also widely used as they have an added hygienic advantage due to their good drying properties. However, such cutting boards made of synthetic resin have disadvantages such as being heavy and slippery, and the synthetic resin and the knife blade not necessarily fitting well, making it difficult to handle.

In order to deal with this problem, many cutting boards with a two-layer structure in which the front plate and the back plate are made of different materials, such as a two-layer cutting board made of wood and non-wooden material such as synthetic resin, have been proposed. However, in a cutting board constructed by stacking and bonding boards made of different materials, the difference in linear expansion coefficient between the two causes the cutting board to warp and twist due to expansion and contraction due to temperature changes. Furthermore, stress due to expansion and contraction constantly acts on the bonded surface of different materials, making it easy for the bonded surface to peel off. In addition, in the case of structures made by laminating wood and non-wood materials such as synthetic resin, the wood swells when wet and contracts when dry, but the non-aqueous phase does not swell or contract when it absorbs moisture or dries. , the tendency of deformation and peeling becomes more pronounced.

In this way, there are many problems in combining different materials to withstand the harsh conditions of repeatedly getting wet and dry like a cutting board. However, since peeling occurred, it could not be put to practical use.

In addition, when creating a laminated structure, not only when using different materials but also when using similar materials such as synthetic resins, depending on aging and usage conditions, the board may warp or peel due to the same reasons as above. There are problems such as causing

The present invention solves these problems and makes it possible to arrange different materials or homogeneous materials plates on the front and back sides, which was not possible in the past.
The purpose is to provide a cutting board that does not warp or peel.

[Means for Solving the Problems] The means for achieving the above object is as described in the above claims, and is formed by threading directional materials in different directions on substantially the same plane. A cutting board characterized by having a core part and plate materials pasted on both sides of the core part, and a reinforcing material formed by combining directional materials in different directions on substantially the same plane. The cutting board is characterized in that the cutting board has a core material portion with a cylindrical shape, and a plate material is attached to the crest side of the core material portion.

The above structure uses materials with directional strength, such as wood, bamboo and other natural materials, and fiber-reinforced plastics and metals whose main fibers are aligned in one direction, and is relatively lightweight yet has excellent rigidity. The rigidity of the core material prevents warpage, twisting, etc. caused by elongation, contraction, and swelling of different or similar materials attached to the front and back surfaces.

The present invention will be described in detail below based on examples.

[First Example] Figures 1 and 2 show an example of a cutting board that uses a core made of a plurality of wooden boards as the core part, a wooden board on one side, and a synthetic resin board on the other side. FIG. 1 is a perspective view showing the completed cutting board, and FIG. 2 is a perspective view showing the direction of the grain of each cutting board material and core material of the cutting board of FIG. 1 before being attached. 1st to 2nd
In the figure, 21 is a wooden cutting board material, 22 is a synthetic resin cutting board material, 23 is a core material, 24 and 25 are core materials with wood grain arranged in the vertical direction, and 26 and 27 are core materials with wood grain arranged in the horizontal direction. be.

In this example, as shown in FIG. 2, the core portion 23 is formed of four wooden cores having different directions. Each core material is combined on the same plane so that the direction of the wood grain is parallel to each side of the cutting board. The grain direction of the surface cutting board material 21 is oriented in the longitudinal direction of the cutting board, and the core material 24
The direction of the grain of the core material 25 and the core material 25 is substantially parallel to this, and intersects the direction of the grain of the core material 26 and 27 at right angles.

The cutting board shown in FIG. 1 is formed by pasting a wooden cutting board material 21 on one side of such a core material and a synthetic resin cutting board material 22 on the other side.

This configuration is effective in preventing warping in the width direction of the cutting board because the direction of the grain of the core material 26.27 is perpendicular to the direction of the grain of the wooden cutting board. Since the directions are arranged in the length direction of the cutting board, it also effectively functions to prevent warping in the length direction of the cutting board.

[Second Embodiment] In FIGS. 3 and 4, in order to provide rigidity with the core material, a reinforcing material is further provided on the wooden core material to form a core portion 33, and a wooden cutting board material 31 on one side, This is an example in which a synthetic resin cutting board material 32 is attached to the other side.

The core material of the core material portion 33 is made of wooden core materials 34 and 37 so that the wood grain directions are perpendicular to each other on the same plane, similar to the core material of the first embodiment.
．． It is formed by combining 35 and 36. Fiber-reinforced plastic (hereinafter referred to as FRP) is used on both the top and bottom of the core material.
The core material part 33 is formed by pasting a thin plate of. When combining a core material and a reinforcing material as in this example, the core material does not necessarily need to be combined with a directional abrasive material.
It can be a simple board. The reinforcing material is a combination of FRP thin plates in which the fibers are aligned in one direction as shown in the diagram, and reinforcing materials 38, 41, 39, 40, and 42, 45. 43.4
It is a combination of 4.

In addition to this example, the reinforcing material used may be a cloth FRP whose strength is biased to one side.

The core portion 33 formed in this manner has sufficient rigidity and is resistant to deformations such as vertical and horizontal curvature and twisting of the cutting board with wooden cutting board and synthetic resin cutting board pasted on both sides. Provides strong resistance.

[Third Embodiment] FIGS. 5 and 6 are examples in which an aluminum honeycomb plate is used as the core material and wood is used as the reinforcing material to construct the core material part.

On both sides of the aluminum honeycomb board 54, reinforcing materials made of thin wood plates 55, 57, 56, and 58 whose grain directions are orthogonal to each other, and reinforcing materials made of thin plates 59, 61, 60, and 62 are pasted to form a core material. A portion 53 is formed. Although the aluminum honeycomb plate 54 is extremely lightweight and lacks rigidity, the core member 53 having sufficient rigidity can be obtained by bonding reinforcing materials made of directional wood from both sides thereof. The thus obtained cutting board with the wooden cutting board material 51 attached to one side of the core part 53 and the synthetic resin cutting board material 52 attached to the other side is resistant to deformations such as warping and twisting.

[Fourth Example] Figures 7 and 8 have almost the same configuration as those in Figures 5 and 6, but instead of wooden thin plates, FRP thin plates with fibers aligned in the same direction were used as reinforcing materials. This is an example. Codes 71-82
correspond to numerals 51 to 62 in FIG. 5, respectively. In this example, the fibers of the adjacent reinforcing materials are combined so that they are perpendicular to each other, forming a core material with excellent bending elasticity and rigidity. It has an excellent effect on preventing warping.

[Fifth Example] Figures 9 to ①0 show examples using different core material parts, in which the wood grains are parallel to each side of the quadrilateral and the adjacent wood grains are perpendicular to each other. Core material 94.96.95.97,
Wooden core material 9 with wood grain parallel to the diagonal direction of the quadrilateral
8.99.100.101 are combined on the same surface to form the core portion 93. A cutting board is constructed by pasting a wooden cutting board material 91 and a synthetic resin cutting board material 92 on both sides of this core part 93. This cutting board also has the advantage of being resistant to warping in all directions.

[Sixth Example] Figures 1 to 12 are examples in which a core part is formed by combining an aluminum honeycomb plate and an FRP reinforcing material as in the fourth example, but the fibers of the FRP reinforcing material are Reinforcement material 114, 115, 116, 117 whose direction is different from that of the fourth embodiment, and whose fibers are aligned in a direction parallel to the diagonal of the quadrilateral.
118, 119, 120, 121 are combined and attached to both sides of an aluminum honeycomb board 123 to form the core member 113. This example also has the same effect as the fourth example.

[Seventh Embodiment] FIGS. 13 and 14 are examples in which the structure of the core portion is more complicated. The core portion 133 has a core material in which an aluminum honeycomb 138 is provided in the center, and wooden core materials 134, 137, 135, and 136 having parallel wood grains on the four sides are combined around the core material. The reinforcing material is a combination of a non-directional cross FRP144 in the center and a combination of directional FRP140, 143, 141, and 142 with fibers parallel to the four sides on the periphery, as well as similar cross FRP 149 and directional FR.
It consists of a combination of P145.148.146.147, and these are pasted on both sides of the core material to form the core material part 133.
It is formed. By incorporating aluminum honeycomb, it is possible to reduce weight, and the combination of directional core material and directional reinforcing material provides secondary resistance to deformation.
The same effects as in the embodiment and other examples can be obtained.

[Eighth Embodiment] FIGS. 15 and 16 are examples showing still other configurations of the core portion. Core material is aluminum honeycomb board 157.158
It consists of a wooden core material 154.156 which is slightly thicker than this and whose grain direction is oriented in the horizontal direction of the cutting board, and an FRP reinforcement material 159.16 whose fiber direction is oriented in the vertical direction of the cutting board.
0, 161, and 162 are combined and adhered to form a flat core portion 153. The core part 1
A wooden cutting board material 151 and a synthetic resin cutting board material 152 are bonded to both sides of the cutting board 53 to obtain a cutting board that is resistant to deformation.

[Ninth Embodiment] FIGS. 17 to 18 are examples in which an aluminum honeycomb plate 174 is used as the core material to reduce weight, as in the third and fourth embodiments. On the upper surface of the core material 174, FRP reinforcing materials 175, 177, 176, 178, which are combined so that the fiber direction is parallel to the four sides, are provided as in the fourth embodiment, and on the lower surface of the core material 174, FRP reinforcing materials 175, 177, 176, and 178 are provided. As in the example, wooden reinforcing materials 179, 182, 180, 18, which are combined so that the wood grain direction is parallel to the four sides, are provided to form the core portion 173.
It is formed. The cutting board obtained by pasting the wooden cutting board material 171 and the synthetic resin cutting board material 172 on both sides of the core portion 173 is strong against warping and deformation as described above. In addition, in this example, even if a hole is made from the synthetic resin cutting board ■72 side with a needle-shaped metal fitting for cooking, the hole is stopped by the wooden reinforcing material, which has the advantage of preventing deterioration of the cutting board due to water seepage into the core material. be.

[Tenth Example] Figures 19 to 20 show a wooden core material 19 having the same structure as Example ①, but with a different grain direction from that of the first example.
4. Combine 197, 195, 196 to form core part 19
This is an example of forming 3. The same effects as in the first embodiment can be obtained.

[Eleventh Example] Figures 21 to 22 show an example in which an aluminum honeycomb plate 204 is used as the core material, and FRP reinforcing materials are provided on both sides of the core material part 203, as in the fourth example. However, FRP
Reinforcements 205.206.207 and 209.210,2
11 differs from the fourth embodiment in that adjacent portions are not abutted against each other in an oblique manner, but are abutted against each other perpendicularly. A cutting board with such a core part is also
Effects similar to those of the embodiment can be obtained.

[Twelfth Embodiment 1 FIGS. 23 to 24 relate to the structure of the peripheral edge of a cutting board, in which a wooden frame 233 is provided around a core 224,
The aim is to protect the core material, beautify the appearance, and improve strength. The other configurations are the same as described above.

[Embodiment 13] Figures 25 and 26 show that the peripheral edge of the core part is pulled inward from the position of the side surface of the peripheral edge of the cutting board material, and a frame of plastic, rubber, wood, etc. is inserted into the gap created by this. This is an example in which the material 253 is inserted and pasted. If the reinforcing material is exposed at the side edge of the cutting board, there is a risk of injuring fingers when handling it, so in addition to being effective in preventing this, it is also effective to protect the area where the cutting board material and core material are attached from water. It is possible to prevent this and maintain a strong bonded state, and also to prevent the core material itself from deteriorating due to water wetting.

[Embodiment 14] Figures 27 to 28 show an example using a different core part, which has wood grains parallel to each side of the quadrilateral of the cutting board, and adjacent ones are perpendicular to each other. Wooden core material with wood grain 305.3
07.306.308 and a wooden core material 304 having grains parallel to the lateral direction of the cutting board are combined on the same surface to form a core material portion 303. A cutting board is constructed by pasting a wooden cutting board material 301 and a synthetic resin cutting board material 302 on both sides of this core part 303. This cutting board also has the advantage of being resistant to warping in all directions.

[Embodiment 15] In the example shown in FIGS. 29 to 30, the core portion 323 has an aluminum honeycomb 329 in the center and has reinforcing materials on its upper and lower surfaces. The reinforcing material includes an FRP reinforcing material 324 whose fiber direction is parallel to the lateral direction of the cutting board in the center, and a directional FRP reinforcing material 325.3 having fibers parallel to the four sides around the center.
27.326.328, and similar F
It consists of a combination of RP330.331.333.332.334, and is pasted on both sides of the core material 329 to form the core material part 133. By incorporating aluminum honeycomb, it is possible to reduce the weight, and the combination of directional reinforcing materials makes it strong against deformation, providing the same effects as other examples.

"Sixteenth Embodiment" FIGS. 31 and 32 have the same configuration as the 15th embodiment, but the core material 329 is further divided into two and an aggregate 339 is provided in the longitudinal direction of the center. This is an example of improving the strength against deformation.

[Comparative Test 1] Water immersion between cutting boards manufactured as follows according to Examples 1, 4, 7, and 11 of the present invention and a cutting board manufactured by simply pasting a wooden board and a plastic board as a comparative example. Five comparative drying tests were conducted, and the warpage was measured and the results shown in Table 1 were obtained.

All of them demonstrate the superiority of the present invention.

Comparative Example: The comparative example shown in Table 1 has a structure in which spruce material with a thickness of 27°5 mm and a polyethylene plate with a thickness of 2.5 mm are bonded together with epoxy resin, and the width is 240 mm x length. It is 420mm x 30mm thick.

Among the values listed in Table 1, the vertical measurement direction indicates the distance between the line connecting both ends of the cutting board in the length direction and the surface of the cutting board in the center, and the horizontal measurement direction indicates the distance between the line connecting both ends of the cutting board in the width direction and the surface of the central part of the cutting board, and all units are mm.

Experimental Example 1: (1) According to the first example, spruce wood with a thickness of lomm was used as the wooden core material, and the direction of the wood grain was parallel to the four sides as shown in Figure 1, and the adjacent parts of the core materials were diagonal. (2) A low-density polyethylene plate with a thickness of 2.5 mm is placed on the lower side of the core material, and a spruce material with a thickness of 7.5 mm is placed on the upper side. , with the wood grain facing the length of the cutting board, (4)
Each layer was adhered and fixed together to obtain a "chopping board" with a total thickness of 30 mm, width of 24 Q mm, and length of 420 mm.

Experimental Example 2: According to the fourth example, (1) FR, P plates with a thickness of 0.5 mm were placed on both sides of an aluminum honeycomb with a thickness of 16.5 mm, and the fiber direction was parallel to the four sides as shown in Figure 7. Adjacent parts of the reinforcing materials are combined so that they intersect diagonally and are adhered together, (2) a polyethylene plate with a thickness of 2.5 mm is placed on the top surface, and (3) a thick polyethylene plate is placed on the other side. By arranging Subrus material with a thickness of 10 mm and bonding each layer together, a total thickness of 30 mm and a width of 2
Obtain a "chopping board" that is 40 mm long and 420 mm long.

Experimental Example 3: According to Example 7, (1) An aluminum honeycomb with a thickness of 16.5 mm was placed in the center, and a wooden core material of the same thickness with the grain direction as shown in Figure 13 was placed around it. On both sides of the core material, FRP thin plates with a 0.5 mm thick cross FRP in the center and the fibers arranged in the direction shown in the figure are attached and fixed to form the core material ( 2) On one side, the thickness is 2-5m.
(3) A 10 mm thick subrus material was arranged on the other side, and each layer was adhered and fixed together to obtain a "cutting board" with a total thickness of 30 mm, width of 240 mm, and length of 420 mm.

Experimental Example 4: According to Example 11, (1) An aluminum honeycomb core material with a thickness of 16.5 mm was used as the core material, and the fibers on both sides were aligned in the horizontal direction of the cutting board as shown in FIG. 0.5mm thick FRP
Thickness 0.5m with the direction of the board and fiber aligned with the vertical direction of the cutting board
A reinforcing material made by combining FRP boards of 2.0 m at right angles is pasted to form the core material, (2) one side of the reinforcing material is 2.5 mm thick, (3) the other side is 10 mm thick. Spruce material is arranged and each layer is glued together to make a total thickness of 30 mm and width of 240 mm.

A "chopping board" with a length of 420 mm was obtained.

Experimental Example 5: According to the 4th example, (1) Suburus material with a thickness of 10 mm was used as the core material, and the 28th
As shown in the figure, a core material whose grain direction is parallel to the horizontal direction of the cutting board is provided in the center, and core materials whose grain direction is parallel to the four sides are arranged around it to form a core material part. (2) On one side, a polyethylene plate with a thickness of 2.5 mm is placed. (3) On the other side, a subluth material with a thickness of 10 mm is placed, and each layer is adhered and fixed together to create a total thickness of 25 mm and a width. 240mm, length 4
A 20 mm "chopping board" was obtained.

The above five experimental examples and the comparative example were subjected to water immersion and drying tests under the same conditions. As shown in Table 1, the comparative example had a large warp, but the example of the present invention In all of the five experimental examples, there was almost no deformation compared to the comparative example, and no delamination occurred.

[Effects of the Invention] According to the present invention, as explained in detail in the above examples and as is clear from the results of comparative tests using experimental examples, deformation such as warping or peeling does not occur even during long-term use. It becomes possible to obtain a cutting board with a laminated structure that is hygienic and robust. In addition, the cutting board obtained in this way with a laminated structure made of different materials is lightweight and can be constructed thinly, and either side can be used freely depending on the purpose, so there is no need to prepare multiple cutting boards. It has many benefits, such as being easy to use and free of clutter.

Furthermore, the present invention can also be applied to a cutting board in which homogeneous materials are laminated, and the function of the core portion can prevent deformations such as warping and twisting of the cutting board caused by usage conditions and aging.

[Brief explanation of drawings]

1 to 32 are diagrams showing embodiments of the present invention.

Claims (1)

[Claims] 1. It has a core part formed by combining directional materials in different directions on substantially the same plane, and plate materials are attached to both sides of the core part. A cutting board. 2. It has a core part equipped with a reinforcing material formed by combining directional materials in different directions on substantially the same plane, and has a plate material attached to both sides of the core part. Cutting board.