JP2003210341A - Chopping board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chopping board which is light as a whole and has a moderately firm feel and ease of bending. <P>SOLUTION: The chopping board having a rectangular sheet shape comprises an intermediate layer 13 which consists of a rigid resin sheet, a front surface layer 14 which is formed atop the intermediate layer 13 and consists of a soft resin sheet and a rear surface layer 15 which is formed on the under surface of the intermediate layer 13 and consists of a soft resin sheet. The intermediate layer 13 consists of, for example, a polypropylene (PP) resin and the front surface layer 14 and the rear surface layer 15 comprises the resin mainly composed of the PP resin and added with an elastomer resin. The ratio of their thicknesses, i.e. t<SB>1</SB>:t<SB>2</SB>:t<SB>3</SB>is 1:8:1. As a result, the chopping board has the moderately firm feel and ease of bending and has improved operability. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting board, and more particularly to a flexible cutting board made of a synthetic resin sheet.

[0002]

2. Description of the Related Art FIG. 6 is a perspective view showing the external shape of a conventional cutting board.

Referring to the drawing, a conventional cutting board 61 has a rectangular sheet shape, and most of the cutting board 61 is made by cutting wood or injection molding synthetic resin. Most of these have a thickness that can withstand the impact of a kitchen knife, and are finished with a solid feeling as a whole.

[0004]

Since the conventional cutting board as described above is thick, it is heavy and difficult to handle when washing or carrying it. Also, when pouring food ingredients cut with a kitchen knife into a pan or the like, the cutting board may be freely curved to prevent it from spilling from the cutting board, but this is not possible because it is thick and material is hard.

On the other hand, there are some sheet-like cutting boards made of thin synthetic resin. However, since such a cutting board is curved, it is easy to pour foodstuffs into it, but when it is easily curved, it is rather difficult to handle.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a cutting board which is light overall and has a proper firmness and flexibility.

[0007]

In order to achieve the above object, the invention according to claim 1 is a cutting board made of a synthetic resin sheet having a plate thickness of 2.5 mm or less.
In the bending test according to No. 16, the bending load when the amount of bending is 10 mm is 0.98 to 4.90 N.

According to this structure, an appropriate firm feeling and easiness of bending are exhibited.

According to a second aspect of the invention, in the constitution of the first aspect of the invention, the synthetic resin sheet has a hard resin sheet as an intermediate layer and a soft resin sheet as a front layer and a back layer formed on both sides thereof. It is composed of a three-layer sheet.

With this structure, a cutting board having a desired bending load can be obtained regardless of the thickness.

According to a third aspect of the present invention, in the structure of the second aspect, a printed pattern is formed on the surface of the hard resin sheet on the surface layer side, and the soft resin sheet as the surface layer is transparent. Is to have.

According to this structure, the printed pattern formed on the hard resin sheet is visually observed through the soft resin sheet of the surface layer.

According to a fourth aspect of the present invention, in the structure of the second aspect of the invention, the hard resin sheet is colored and the soft resin sheet as the surface layer has transparency.

With this structure, the coloring of the hard resin sheet is visually observed through the soft resin sheet of the surface layer.

According to a fifth aspect of the present invention, in the structure according to any one of the second to fourth aspects, the hard resin sheet is made of polypropylene resin, and the soft resin sheet is mainly made of polypropylene resin and is made of elastomer resin. Consisting of additions.

With this structure, a firm feeling of the entire cutting board is ensured and the surface of the cutting board is moderately soft.

According to a sixth aspect of the invention, in the structure of the fifth aspect of the invention, each of the soft resin sheets has the same thickness.

With this structure, the smoothness of the entire cutting board is maintained.

According to a seventh aspect of the present invention, the synthetic resin sheet is a single-layer sheet containing a polypropylene resin as a main component and an elastomer resin added thereto.

With this structure, the cutting board can be easily manufactured.

[0021]

As described above, according to the first aspect of the present invention, since a proper firmness and easiness of bending can be exhibited, it becomes easy to bend the food material into a pan etc. by bending the cutting board. Handling at the time of cleaning becomes easy. As described above, according to this cutting board, the overall weight is light and the usability is improved.

According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, it becomes possible to easily obtain a cutting board having a desired firmness and flexibility regardless of the thickness.

According to the invention of claim 3, in addition to the effect of the invention of claim 2, since the printed pattern is visually observed through the surface layer, the cutting board can be provided with a design property and the printed pattern is on the cutting board. The hygienic safety is secured without touching the foodstuffs.

According to the invention of claim 4, in addition to the effect of the invention of claim 2, since the coloring state of the hard resin sheet is visually observed through the surface layer, designability is imparted and a coloring pigment is provided. The hygienic safety is secured without touching the food on the cutting board.

According to the invention of claim 5, in addition to the effect of the invention of any one of claims 2 to 4, since a firm feeling is secured and the surface of the cutting board is moderately soft, cooking is possible. Easy to use and easy to use.

According to the invention of claim 6, in addition to the effect of the invention of claim 5, the overall smoothness is maintained, so that the quality of the cutting board is improved.

In addition to the effect of the invention described in claim 1, the invention described in claim 7 facilitates the manufacturing of the cutting board, and is a cost-effective cutting board.

[0028]

1 is a perspective view showing the outer shape of a cutting board according to a first embodiment of the present invention.
FIG. 2 is an enlarged sectional view showing a sectional structure of the cutting board shown in FIG. 1.

Referring to these drawings, the cutting board 11 has a rectangular sheet shape and is made of a synthetic resin sheet having a three-layer structure in cross section. That is, the intermediate layer 13 is made of a hard resin sheet made of polypropylene resin, and the surface layer 14 formed on the upper surface of the intermediate layer 13 is made of a soft resin sheet containing polypropylene resin as a main component and an elastomer resin. The back surface layer 15 formed on the lower surface of the is formed of a soft resin sheet made of the same material as the surface layer 14.

These resin sheets are manufactured by coextrusion. The thickness ratio, that is, the thickness t ₁ of the front surface layer 14: the thickness t ₂ of the intermediate layer 13: the thickness t ₃ of the back surface layer 15 is 1: 8: 1 in this embodiment. The total thickness of the cutting board 11 is 1.5 mm.

The cutting board 11 according to the above-mentioned embodiment is manufactured by coextrusion of the soft resin sheet and the hard resin sheet as described above, but instead of this, each resin sheet is formed in advance, You may form these by pasting together by lamination, such as heat lamination.
Instead of these manufacturing methods, the intermediate layer 13 is first injection-molded, and then the front surface layer 14 and the back surface layer 15 are insert-molded to the intermediate layer 13 by an injection molding manufacturing method. Is also good.

The front surface layer 14 and the rear surface layer 15 are formed of the same material and have the same thickness in order to obtain the smoothness of the entire cutting board 11. When the cutting board 11 is formed in this manner, the hard resin sheet used for the intermediate layer 13 gives a firm feeling, and the soft resin sheets used for the front surface layer 14 and the back surface layer 15 can adjust the bending ease as a whole, and the cutting board Since the surface of 11 becomes soft, the feeling of use of the kitchen knife when cooking the food is improved.

In the cutting board 11 having the three-layer sheet structure as described above, it is possible to form a printed pattern on the surface of the intermediate layer 13. In this case, if the surface layer 14 is made transparent, the printed pattern formed on the upper surface of the intermediate layer 13 can be viewed through the surface layer 14. This makes it possible to improve the design of the cutting board 11. Further, in this case, since the printed pattern formed on the intermediate layer 13 is not likely to come into direct contact with the food material on the surface layer 14,
It is possible to ensure safety in terms of hygiene.

Similarly, the hard resin sheet forming the intermediate layer 13 may be colored by using a pigment or the like. In this case, similarly, if the surface layer 14 is made to have transparency, designability is improved and safety in hygiene is ensured.

FIG. 3 is a perspective view showing a use state of the cutting board shown in FIGS. 1 and 2.

Referring to the drawing, when the processing of the foodstuffs by the knife on the surface layer 14 of the cutting board 11 is completed, a force is applied in the direction of the arrow from the longitudinal direction of the cutting board 11 to make the cutting board 11 concave upward. To bend. In this case, since the cutting board 11 has an appropriate firmness and flexibility,
Properly curved. Then, in this state, if the foodstuff 21 remaining on the cutting board 11 is poured into the pot 22 or the like,
It becomes easy to reliably pour the food 21 into the pan 22 without spilling.

When the food 21 is put into the pot 22 and the force applied to the cutting board 11 is relaxed, the cutting board 11 returns to its original smooth state. In this case, since the smoothness of the cutting board 11 is maintained by an appropriate firm feeling, it becomes easy to wash the surface of the cutting board 11.

In the above embodiment, the cutting board is composed of two soft resin sheets and one hard resin sheet.
Although it has a layered structure, it is also possible to form the cutting board with a single layer structure by adopting a synthetic resin sheet having an appropriate hardness. In this case, for example, it is possible to adjust the hardness as a whole by mixing a soft resin such as an elastomer resin, a curing agent such as calcium carbonate or an additive such as mica into polypropylene resin. However, in this case, since the material has a single-layer sheet structure, the flexibility of the material is constant. Therefore, the flexibility of the entire cutting board may be adjusted by changing the overall thickness.

On the other hand, if the cutting board according to this embodiment has a three-layer structure, the thickness of the soft resin sheet and that of the hard resin sheet can be varied by changing the thickness ratio even if the thickness is constant. It is easy to adjust the feeling and bendability, and it is easy to use.

FIG. 4 is a side view showing the constitution of a bending test in accordance with JIS K7116 “Plastic bending creep test method” for objectively evaluating the firmness and easiness of bending of a cutting board, and FIG. It is the top view.

With reference to these figures, the sample 17 used for the test has a rectangular sheet shape, and its long side A is 300 mm and its short side B is 200 mm. The support bases 19a and 19b that support the sample 17 are arranged in parallel. The length in the longitudinal direction is the same as the short side of the sample 17, and the distance C between them is 200.
mm. The radius R ₂ of the upper ends of the support bases 19a and 19b is 2 mm.

On the other hand, the pressure wedge 18 located above the center point of the sample 17 has a cylindrical shape with a rounded tip,
The radius R ₁ is 5 mm.

Next, the test method will be described. Sample 17
The pressure wedge 18 descends onto the sample 17 in a state in which is mounted on the support bases 19 a and 19 b. Sample 17
When the pressure wedge 18 further descends after contact with the
7 is bent upward so as to be concave. This deflection L
The force F in the downward direction applied to the pressure wedge 18 at the time point when is 10 mm is measured. The value of F at this time is recorded as the bending load of the bending test of the sample 17. The test results thus obtained are shown in the table below.

[0044]

[Table 1] Bending tests were performed on 11 samples A to K having a thickness of 2.5 mm or less. By the way, the cutting board according to the above-described embodiment corresponds to the sample D. Each thickness indicates the total thickness regardless of the layer structure. Sample B has a single-layer structure, but all the other samples have a structure in which one hard resin sheet is sandwiched between two soft resin sheets.
Other than the samples A and I, the other multilayer sheets have the same ratio as in the previous embodiment, that is, the thickness ratio of the front surface layer, the intermediate layer and the back surface layer is 1: 8: 1. On the other hand, in Samples A and I, the ratio between them is 2: 6: 2.

Further, the samples C, F, G and H contain additives, but these additives are added only to the hard resin sheet of the intermediate layer, and the surface layer and the back surface layer thereof are The soft resin sheet used for is supposed to have transparency. Samples C, E, and G contained a large amount of coloring pigment, but this pigment was mixed only in the hard resin sheet of the intermediate layer, and the soft resin sheet was It is supposed to have transparency.

The results obtained by actually using each of these samples and evaluating their firmness and bendability are shown in the right column. Specifically, as a firm feeling, Samples A and B
Failed, but the other samples passed. On the other hand, the samples J and K are rejected for the ease of bending, but the other samples are acceptable. As a result, the overall evaluation as satisfying both firm feeling and ease of bending is
Samples C to I are included, and other samples are rejected as a comprehensive evaluation.

It is considered that the evaluation of the firm feeling and the easiness of bending is expressed as the value of the bending load by the above-mentioned bending test of each sample. That is, in a chopping board having a thickness of 2.5 mm or less, it is considered that the chopping board having a bending load in the range of 0.98 to 4.90 N satisfies both the firm feeling and the ease of bending.

In the above embodiment, the soft resin sheets used for the front surface layer and the back surface layer are made of the same material and have the same thickness, but their surface finishes may be different depending on the application. good. That is, if the surface of the front surface layer is made substantially smooth and the surface of the back surface layer 15 is made uneven by embossing or the like, the back surface layer exhibits the anti-slip effect when the cutting board is used.

Further, in the above-mentioned embodiment, the resin sheet forming the cutting board is mainly composed of polypropylene resin, but other synthetic resins having the same characteristics can be used. Can be used for

Further, in the above embodiment, the cutting board is 3
Although it has a layered sheet structure, it may have a two-layered sheet structure or a sheet structure of four or more layers.

Further, in the above embodiment, it is suggested that the printed pattern is formed on one side of the hard resin sheet of the intermediate layer, but the printed pattern may be formed on both sides of the hard resin sheet. In this case, not only the front surface layer but also the back surface layer may be a soft resin sheet having transparency.

Further, in the above embodiment, it is suggested that the hard resin sheet contains a print pattern or a coloring pigment, but it goes without saying that these may be added together to the hard resin sheet. Needless to say, a curing agent such as calcium carbonate or an additive such as mica may be added to the hard resin sheet alone or in combination, if necessary.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external shape of a cutting board according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view showing a sectional structure of the cutting board shown in FIG.

FIG. 3 is a perspective view showing a use state of the cutting board shown in FIGS. 1 and 2.

FIG. 4 is a side view showing a schematic configuration of a bending test for a cutting board or the like according to the embodiment of the present invention.

5 is a plan view showing a schematic configuration of the bending test shown in FIG.

FIG. 6 is a perspective view showing an external shape of a conventional cutting board.

[Explanation of symbols]

11 ... Cutting board 13 ... Middle layer 14 ... Surface layer 15 ... Back layer In the drawings, the same reference numerals indicate the same or corresponding parts.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hirokazu Uemura             3-6-8, Kutaro-cho, Chuo-ku, Osaka             Yo Aluminum Foil Products Co., Ltd. F-term (reference) 4B066 CC11 CC15 CC23

Claims (7)

[Claims] 1. A cutting board made of a synthetic resin sheet having a plate thickness of 2.5 mm or less, and a bending test according to JIS K7116, in which the bending load is 0.98 to 4.90 N when the bending amount is 10 mm.
A cutting board characterized by being. 2. The synthetic resin sheet comprises a three-layer sheet in which a hard resin sheet as an intermediate layer and a soft resin sheet as a back surface layer are formed on both sides of the hard resin sheet.
The listed cutting board. 3. The cutting board according to claim 2, wherein a printed pattern is formed on the surface of the hard resin sheet on the surface layer side, and the soft resin sheet as the surface layer is transparent. 4. The cutting board according to claim 2, wherein the hard resin sheet is colored, and the soft resin sheet as the surface layer has transparency. 5. The cutting board according to any one of claims 2 to 4, wherein the hard resin sheet is made of polypropylene resin, and the soft resin sheet is made of polypropylene resin as a main component and elastomer resin added thereto. . 6. The cutting board according to claim 5, wherein each of the soft resin sheets has the same thickness. 7. The cutting board according to claim 1, wherein the synthetic resin sheet is a single-layer sheet containing a polypropylene resin as a main component and an elastomer resin added thereto.