JP2003171006A - Carrying belt used for cutting food thereon - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carrying belt used for cutting food thereon, of which food carrying face is not damaged even when the food is cut on the carrying belt, and which can be sufficiently used for a pulley of a small diameter. <P>SOLUTION: The resin belt A is formed by laminating canvases 1 and resin layers 2, and a face brought into contact with the food is the resin layer 2. The hardness of the resin layer 2 brought into contact with the food is JISA 60 degrees to 80 degrees, and the thickness of the resin layer 2 is 0.7 to 1.0 mm. Further, the resin of the resin material 2 has physicality of 4% or less of the permanent deformation at a 25% extension. <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 resin belt used for transporting food, and particularly for transporting food and cutting the food on the resin belt, which also serves as food cutting for preventing damage by a knife. The present invention relates to a conveyor belt.

[0002]

2. Description of the Related Art A resin belt A used to convey food
Is produced by applying at least one layer of a canvas and a resin layer to each other by applying a resin to the canvas serving as a core. As a food cutting / combining conveyor belt, a belt having a resin layer on the conveyor surface is generally used.

These belts are wound around a drive pulley 11 and a driven pulley 12 as shown in FIG. 5, for example. The food 20 is conveyed by driving the resin belt A while the upper portion of the resin belt A on the conveying side is supported by the flat table 13 and the lower portion of the resin belt A on the returning side is supported by the roller 14. It has become.

Then, the food 20 is conveyed and the food 20 is cut on the resin belt. Conventionally, as a belt used for these applications, a resin layer contacting with food has a thickness of 0.2 to 0.3 mm and a resin hardness of J
The ISA was about 90 °.

[0005]

In the conventional resin belt, the hardness of the resin is about JISA 90 °, the resin becomes hard, and stress is not relaxed even when the tip of the cutting tool hits the resin layer. There has occurred. Further, in the conventional belt, the thickness of the resin layer is thinned to 0.2 to 0.3 mm so that it can be used with a small pulley diameter, but in order to cut food, a cutter blade is attached to the resin layer. 0.5 mm
To some extent, the blade needs to be cut into the belt,
If the resin layer had the above-mentioned thickness, it cut into the canvas layer, resulting in extremely short belt life.

[0006] Further, there is a resin belt exclusively for cutting food which is used exclusively as a cutting board without transporting food, and such a resin belt has a resin layer contacting food with a thickness of about 5 to 20 mm. It was thick. If this belt is also used for conveying food, there is a problem that when it is used with a small-diameter pulley, cracks occur early and the belt is cut.

The present invention has been made in view of the above points, and even when the food is cut on the carrying belt, the food carrying surface is not scratched and can be sufficiently used even with a small pulley diameter. An object of the present invention is to provide a conveyor belt that also serves as food cutting.

[0008]

SUMMARY OF THE INVENTION The present invention is a resin belt formed by laminating a canvas and a resin layer and having a resin layer on the surface that comes into contact with food, and the resin hardness of the resin layer that comes into contact with the food. It is a conveyor belt for food cutting and used in the range of JIS A 60 ° to 80 °.

According to the first aspect of the present invention, the resin hardness of the resin layer contacting with the food is determined according to JIS A 60 ° -80 °.
From the above range, the elasticity of the conveying surface is appropriate, and when the tip of the cutting tool comes into contact with the resin layer, stress relaxation occurs and the resin layer is not cut.

A second aspect of the present invention is the conveyor belt for food cutting and use according to the first aspect, wherein the resin layer has a thickness of 0.7 to 1.0 mm.

According to the second aspect of the present invention, since the resin layer has a thickness of 0.7 to 1.0 mm, the tip of the blade does not reach the canvas, while it is not extremely thick. Even if the pulley of is used, the bending fatigue resistance is sufficiently satisfied.

According to a third aspect of the invention, the resin layer is 2
The conveyor belt for food cutting and use according to claim 1 or 2, which has physical properties such that the permanent set when stretched by 5% is 4% or less.

According to the third aspect of the present invention, by using the food cutting / conveying belt according to the first or second aspect, the resin layer has physical properties such that the permanent set at 25% elongation is 4% or less. When the diameter of the small pulley is followed, no unreasonable strain is generated and the resin belt is not cracked.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. FIG. 1 shows an example of the resin belt A, which is formed by laminating a canvas 1 as a core and a resin layer 2.
In the illustrated embodiment, a plurality of layers of the canvas 1 and the resin layer 2 are alternately laminated, and the resin layer 2 is arranged on the outer circumference and the canvas 1 is arranged on the inner circumference.

The canvas 1 is formed of warp threads and weft threads. The direction of the warp threads and the weft threads of the canvas 1 is set so that the warp threads run along the longitudinal direction of the belt and the weft threads cross the width direction of the belt. A is produced. Canvas 1
The warp and weft are made of polyethylene fiber, nylon fiber, polyester fiber, aramid fiber, etc., and warp and weft should be formed from multifilament (continuous long fiber) or short fiber spun yarn of these fibers. You can

The canvas 1 is impregnated with or coated with a thermoplastic resin or a thermosetting resin to form a resin layer 2 so that the canvas 1 and the resin layer 2 as a core are laminated as shown in FIG. Thus, the resin belt A can be manufactured. When forming the resin belt A from a plurality of canvas 1 and the resin layer 2, the resin layer 2 is formed of the cover resin layer on the surface and other intermediate resin layers. The type of thermoplastic resin or thermosetting resin forming the resin layer 2 is not particularly limited, but polyurethane, polyvinyl chloride, polyethylene, polypropylene, olefin-based thermoplastic elastomer, etc. can be preferably used. .

Here, the resin hardness of the resin layer is determined by JISA.
The range is 60 ° to 80 °. The thickness of the resin layer is 0.7 to 1.0 mm.

The resin belt A produced as described above is
For example, as shown in FIG. 5 described above, it is used by being wound between the drive pulley 11 and the driven pulley 12, and the upper portion of the resin belt A on the conveying side is flat on the table 13.
Thus, the food 20 is conveyed by driving the resin belt A while the lower portions of the resin belt A on the return side are supported by the rollers 14, respectively.

Here, by setting the hardness and thickness of the resin layer as described above, cracks do not occur even when passing through a small pulley, and the life is not shortened.

[0020]

EXAMPLES Next, the present invention will be specifically described with reference to examples. (Example) Using a polyester multifilament (1000 denier) as a warp and a polyester monofilament (900 denier) as a weft, plain weaving was performed to produce a canvas 1.

Next, the surface of the canvas 1 is coated with polyurethane to form a resin layer 2 having a thickness of 0.8 mm.
And the warp 3 is cut along the belt longitudinal direction to form a belt width of 100 mm and a belt length of 15 mm.
A 00 mm endless resin belt was produced. At this time, the resin layer 2 had a hardness of JISA 73 ° and a permanent set of 2.2% at 25% elongation.

(Comparative Example) As the canvas, the same one as in Example was used. Next, the surface of this canvas is coated with polyurethane to form a resin layer having a thickness of 0.3 mm,
An endless resin belt having a belt width of 100 mm and a belt length of 1500 mm was produced by cutting the warp along the belt longitudinal direction. Resin layer 2 at this time
The hardness of JIS was 86 °, and the permanent set at 25% elongation was 2.9%.

Then, the blades were cut into the resin belts of the above-mentioned Examples and Comparative Examples, and the state was photographed from the cross section with a video camera, and the cut amount and the resin layer deformation amount were measured. The cutting speed of the blade at this time is 10 mm / min
Met. The state of the deformation amount and its result are shown in FIGS. 2 and 4.

From the above results, in the example, it was found that the deformation amount of the resin layer was large and the cutting amount of the cutting tool up to 0.6 mm followed the cutting amount of the cutting tool.
In the comparative example, the resin layer was not deformed with respect to the cut amount of the blade, and the resin layer was scratched by the blade.

[0025]

As described above, according to the present invention as set forth in claim 1, since the resin hardness of the resin layer contacting with the food is in the range of JISA 60 ° to 80 °, The elasticity is appropriate, and when the tip of the cutting tool comes into contact with the resin layer, stress relaxation occurs, and there is an effect that the resin layer is not cut.

According to the second aspect of the present invention, since the resin layer has a thickness of 0.7 to 1.0 mm, the tip of the blade does not reach the canvas, while it is not extremely thick. Even if the above pulley is used, there is an effect that the bending fatigue resistance is sufficiently satisfied.

According to the invention as defined in claim 3, the resin layer has a physical property that the permanent set at 25% elongation is 4% or less. When the small pulley diameter is followed, there is an effect that an excessive strain does not occur and the resin belt is not cracked.

[Brief description of drawings]

FIG. 1 shows an example of an embodiment of the present invention,
The sectional drawing of a belt is shown.

FIG. 2 is a schematic view showing a state in which a blade is cut into the resin belt of the embodiment.

FIG. 3 is a schematic view showing how a blade is cut into a resin belt of a comparative example.

FIG. 4 is a graph showing a relationship between a cutting amount of a blade and a deformation amount of a resin layer.

FIG. 5 is a schematic front view showing a usage state of a resin belt.

[Explanation of symbols]

1 canvas 2 resin layers 3 cutlery A resin belt

Claims (3)

[Claims] 1. In a resin belt formed by laminating a canvas and a resin layer and having a resin layer on a surface contacting with food, the resin hardness of the resin layer contacting with the food is from JIS A 60 ° to
A conveyor belt that also serves as a food cutter, characterized by having a range of 80 °. 2. The thickness of the resin layer is 0.7 to 1.0 mm
The conveyor belt for food cutting and use according to claim 1, wherein. 3. The resin layer has a permanent set of 4% when stretched by 25%.
% Of the physical property or less. The food cutting / conveying conveyor belt according to claim 1 or 2.