JP2018153399A - Chopping board sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve planarity of a chopping board sheet, while securing resistance thereof to cutting.SOLUTION: The chopping board sheet according to one embodiment extends in a first direction. The chopping board sheet includes: a thermoplastic-resin base material layer with the thickness of not less than 65 μm and not more than 160 μm; and a plurality of thermoplastic-resin protrusions provided on a first surface of the base material layer, aligned along the first direction at prescribed intervals, and extending along a second direction crossing the first direction. The height of the protrusions is larger than the thickness of the base material layer.SELECTED DRAWING: Figure 2

Description

  The present disclosure relates to cutting board sheets.

  The surface of a cutting board, which is one of the cooking utensils, is easily scratched by a kitchen knife, and various germs and bacteria enter the wound, often resulting in darkening and other dirt. In order to avoid or suppress such situations and maintain hygiene of the cutting board, a disposable cutting board sheet is disclosed.

  For example, Patent Document 1 describes a sheet made of a hard resin. This cutting board sheet is stretched in at least one direction, and its thickness is 40 μm or more and 150 μm or less. This cutting board sheet is provided with an easy tear processing portion along an end in a direction substantially perpendicular to the one direction.

Patent Document 2 discloses a cutting board sheet composed of a paper layer, a first resin layer laminated on the front side of the paper layer, and a second resin layer laminated on the back side of the paper layer. Have been described. The basis weight of the paper layer is 50 g / m ² or more and 105 g / m ² or less. The first resin layer and the second resin layer are formed by melt extrusion using the same polyolefin resin so that the amount of resin per unit area is substantially the same.

JP 2007-330465 A JP 2014-73226 A

  In order to increase the cut resistance of the chopping sheet, it is preferable to increase the thickness of the entire sheet. However, when the thickness of the sheet is increased, it is difficult to ensure the flatness of the sheet. Therefore, it is required to improve the flatness while ensuring the cut resistance of the cutting board sheet.

  In order to solve the above-described problem, according to an embodiment of the present disclosure, a base sheet made of a thermoplastic resin that is a cutting board sheet extending in a first direction and has a thickness of 65 μm or more and 160 μm or less, and a base material layer A plurality of projections made of a thermoplastic resin that are arranged at a predetermined interval along the first direction and extend along a second direction that intersects the first direction. A cutting board sheet is provided which is greater than the thickness of the substrate layer.

  According to the present disclosure, it is possible to improve the flatness of the cutting board sheet while ensuring the cut resistance.

It is a figure which shows the outline of the cutting board sheet which concerns on embodiment. It is a figure which shows an example of the cross section of the cutting board sheet which concerns on 1st Embodiment. It is a figure which shows an example of the cross section of the cutting board sheet which concerns on 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 schematically shows cutting board sheets 10 and 20 according to the embodiment. The cutting board sheets 10 and 20 are disposable articles used as an underlay when, for example, a food material is cut with a knife. The user lays the cutting board sheets 10 and 20 on a flat board or table, and cuts the food on the cutting board sheets 10 and 20 with a knife. The user discards the used cutting board sheets 10 and 20. Since the cutting board sheets 10 and 20 are disposable articles, when provided, sheets corresponding to a plurality of uses may be provided together. For example, as shown in FIG. 1, the cutting board sheets 10 and 20 may be provided in a state of being wound in layers. A user pulls out one end of the cutting board sheets 10 and 20 provided in a roll shape and tears the cutting board sheets 10 and 20 by hand to obtain one cutting board sheet 10 and 20 having a desired length, and the cutting board sheet 10 and 20 are used. In addition, the cutting board sheets 10 and 20 may be disposable every time, and may be disposable after passing through a predetermined | prescribed number of times.

  In order to function as an underlay when a food material or the like is cut with a knife, the cutting board sheets 10 and 20 have cut resistance and flatness. Cut resistance refers to the property of being hard to be damaged or cut by a blade, and does not mean that it is not damaged or cut. Flatness refers to the property of being easily restored to a flat state after being bent or rolled, and does not mean until it is completely flattened.

  The cutting board sheets 10 and 20 have a planar shape extending along both the longitudinal direction and the width direction orthogonal to the longitudinal direction. The direction orthogonal to the longitudinal direction and the width direction is referred to as the sheet thickness direction. In the present embodiment, the longitudinal direction is also referred to as a “first direction”. In this embodiment, the cutting board sheets 10 and 20 are wound along the longitudinal direction (first direction). In FIG. 1, a double arrow L indicates a longitudinal direction (first direction), and a double arrow W indicates a width direction.

(First embodiment)
FIG. 2 shows an example of a cross section of the cutting board sheet 10 when the cutting board sheet 10 according to the first embodiment is viewed along the width direction. The chopping sheet 10 includes a sheet body 11 that is a planar member. The sheet body 11 includes a planar substrate layer 12 and a plurality of protrusions 13 disposed on the substrate layer 12. The first surface 16 of the base material layer 12 indicates a main surface on which the protrusions 13 are provided, out of two opposing main surfaces of the base material layer 12. The second surface 17 of the base material layer 12 represents a main surface opposite to the first surface 16. When the cutting board sheet 10 is used, the cutting board sheet 10 is laid on a plate material or a stand with the second surface 17 facing down and the protrusion 13 facing up. Accordingly, the plurality of protrusions 13 receive the knife blade.

  The individual protrusions 13 are three-dimensional structures provided on the first surface 16 of the base material layer 12 so as to extend along the second direction D2 intersecting the first direction D1. “Provided so that the protrusions extend” means a direction in which the length of the protrusion 13 along the second direction D2 is orthogonal to the second direction D2 when the base material layer 12 is viewed from the first surface 16 side. Is longer than the length of the protrusion 13 along the line (hereinafter referred to as the “width” of the protrusion 13). That is, “provided so that the protrusions extend” means that the protrusions 13 are arranged so as to draw a line when the base material layer 12 is viewed from the first surface 16 side. The aspect in which the protrusion 13 extends along the second direction D2 is not limited. For example, the protrusion 13 may be linear, curved, wavy, broken, parallel, non-parallel, or random. Each protrusion 13 may extend on the base material layer 12 without interruption, or may be interrupted in the middle. In the present embodiment, an example in which the protrusion 13 extends linearly without interruption will be described. For example, the protrusion 13 is provided in a region on the first surface 16 having an area of 70% or more or 90% or more and 100% or less or 95% or less.

  The angle formed by the first direction D1 and the second direction D2 is not limited, and may be, for example, an arbitrary acute angle, a right angle, or an arbitrary obtuse angle. For example, the second direction D <b> 2 may be substantially orthogonal to the first direction D <b> 1, which means that the individual protrusions 13 extend substantially along the width direction of the cutting board sheet 10. 1 and 2 show an example in which each protrusion 13 extends along the width direction of the cutting board sheet 10, that is, an example in which the second direction D2 is the width direction of the cutting board sheet 10. FIG.

  The cross-sectional shape of the protrusion 13 is not limited, and may be an arbitrary polygon such as a trapezoid, a triangle, or a quadrangle, or a shape including a curve such as a semicircle, an arc, or a wedge, A combination of these may be used. Here, the “cross-sectional shape of the protrusion” is a cross-sectional shape obtained by cutting the protrusion 13 in a direction orthogonal to the extending direction of the protrusion 13 (second direction D2). In the present embodiment, an example in which the cross-sectional shape is a trapezoid will be described.

  The plurality of protrusions 13 are arranged at predetermined intervals along the first direction D1. “Arranged at a predetermined interval” means that the extending directions of the plurality of protrusions 13 are substantially the same and the adjacent protrusions 13 are separated from each other along the first direction D1 by an arbitrary distance. It means that is arranged. The intervals between the protrusions 13 may be unified or may not be unified.

  The groove 15 indicates a region defined by the adjacent protrusions 13. The arrangement and sectional shape of the groove 15 are determined by the arrangement and sectional shape of the protrusion 13. Therefore, the aspect which the groove | channel 15 extends | stretches along the 2nd direction D2 is not limited, For example, linear form, curvilinear form, wavy line form, polygonal line form, parallel, non-parallel, and random may be sufficient. The grooves 15 may be independent from each other, or a plurality of grooves 15 may be partly connected and integrated. Examples of communication include crossing, branching (merging), and cross-linking. By forming the grooves 15 in this way, moisture (for example, water or juice that has exuded from the food) can be effectively retained or released.

  The material of the sheet body 11 is not limited. For example, from the viewpoint of workability, the material of the sheet body 11 may be a thermoplastic resin. The thermoplastic resin may be formed of a material that is durable, resilient, has high resistance to interference, and is less susceptible to damage and wear. Examples of thermoplastic resins include polyolefin resins, polymers having polyoxyethylene chains, polypropylene (PP), polyethylene (PE), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), and polyurethane resin (PUR). . By using these materials, a cutting board sheet can be easily processed. The base material layer 12 and the protrusions 13 may be made of the same thermoplastic resin, or may be made of different thermoplastic resins. When the base material layer 12 and the protrusion 13 are made of different thermoplastic resins, the protrusion 13 may be made of a material having a lower hardness than the base material layer 12. Moreover, when the base material layer 12 and the protrusion 13 are comprised with the same thermoplastic resin, the base material layer 12 and the protrusion 13 may be produced integrally.

  The first surface 16 of the base material layer 12 may be hydrophilic. When the first surface 16 is hydrophilic, the capillary force acting on the water increases, and moisture (for example, water or juice that has exuded from the food material) can be retained more effectively. Moreover, moisture can be spread thinly on the first surface 16, which is suitable for cooking. “The first surface is hydrophilic” means that, for example, when a substantially planar sheet using the same material as the base material layer 12 and having no protrusions 13 (and grooves 15) is made, the sheet The contact angle between the first surface and the water surface is less than 90 °. The upper limit of the contact angle may be, for example, less than 80 °, less than 70 °, less than 60 °, less than 50 °, less than 40 °, less than 30 °, less than 20 °, or less than 15 °.

  An additive may be added to the material of the sheet body 11. Examples of additives include glass beads, glass fibers, and cellulose nanofibers. By adding the additive, the cut resistance of the sheet body 11 can be improved.

  When the sheet body 11 is manufactured using a thermoplastic resin, the hardness of the sheet body 11 may be increased in order to ensure sufficient cut resistance. The lower limit of the durometer hardness defined in JIS K7215 of the sheet body 11 made of a thermoplastic resin may be HDA15, and the upper limit may be HDD75. From the viewpoint of cut resistance, the base material layer 12 may have a durometer hardness higher than that of the protrusion 13.

  The manufacturing method of the sheet body 11 is not limited, and may be, for example, injection molding, press molding, casting, etching, or laser processing. For example, after kneading the material, the sheet body 11 may be obtained by press molding at a temperature equal to or higher than the melting point of the material using a silicone mold.

  The thickness (h2) of the base material layer 12, the height (h1) of the protrusion 13, the root width (w1) of the protrusion 13, the tip width (w2) of the protrusion 13, and the distance (d1) between the adjacent protrusions 13 May be determined as follows: Here, the thickness of the base material layer 12 is the length of the base material layer 12 in the thickness direction of the cutting board sheet 10. The height of the protrusion 13 is the length of the protrusion 13 in the thickness direction of the cutting board sheet 10. The base width (w1) of the protrusion 13 is the width of the base in contact with the first surface of the base material layer 12, and the tip width (w2) of the protrusion 13 is the width of the tip of the protrusion 13. As described above, the width of the protrusion 13 is the length of the protrusion 13 along the direction orthogonal to the second direction D2. The distance (d1) between the adjacent protrusions 13 is the minimum value of the distance between the two protrusions 13 in the direction orthogonal to the second direction D2, and can be restated as the minimum value of the width of the groove 15.

  The lower limit of the thickness (h2) of the base material layer 12 may be 65 μm or 70 μm, for example, and the upper limit may be 160 μm or 100 μm, for example.

  The lower limit of the height (h1) of the protrusion 13 may be, for example, more than 65 μm, 70 μm, or 90 μm, and the upper limit may be, for example, 160 μm, 175 μm, or 225 μm. However, the height of the protrusion 13 is larger than the thickness of the base material layer 12, and may be 1.3 times or more the thickness of the base material layer 12, for example. The upper limit of the height of the protrusion 13 may be 2 times or less or 2.5 times or less the thickness of the base material layer 12.

  The lower limit of the sum of the thickness (h2) of the base material layer 12 and the height (h1) of the protrusion 13 (that is, the thickness of the sheet body 11) may be more than 130 μm, 135 μm, 140 μm, and the upper limit is 320 μm or 385 μm. But you can.

  By configuring the thickness (h2) of the base material layer 12 and the height (h1) of the protrusions 13 as described above, the thickness of the sheet body 11 as a whole increases, and as a result, cut resistance increases. On the other hand, since the portion sandwiched between two adjacent protrusions 13 (the portion of the base material layer 12 where the protrusions 13 do not exist) is thin, the flexibility of the entire sheet is increased, and the cutting board sheet 10 returns to a flat state. It becomes easy. Therefore, the flatness can be improved while ensuring the cut resistance of the cutting board sheet 10.

  The lower limit of the base width (w1) of the protrusion 13 may be 1 μm or 50 μm, for example, and the upper limit may be 1 mm, 200 μm, or 120 μm, for example.

  The lower limit of the tip width (w2) of the protrusion 13 may be 1 μm or 50 μm, for example, and the upper limit may be 1 mm, 200 μm, or 120 μm, for example. For example, the tip width (w2) is equal to or less than the root width (w1) and may be larger than half of the root width (w1). From the viewpoint of cut resistance, the tip width (w2) and the root width (w1) may be the same.

  The lower limit of the distance (d1) between the adjacent protrusions 13 may be 200 μm, for example, and the upper limit may be 600 μm, for example. By setting the distance (d1) in this way, moisture (for example, water or juice that has exuded from the food) can be held or released by capillary action so as not to hinder cooking. From the viewpoint of manufacturing the cutting board sheet 10, this distance (d1) may be larger than the height (h1) of the protrusion 13. Alternatively, the distance (d1) may be smaller than the height (h1) of the protrusion 13, and in this case, the inclined protrusion 13 or the fallen protrusion 13 covers the base material layer 12, so that the base material layer 12 is It can be prevented from being damaged by the knife blade.

  The lower limit of the length of the protrusion 13 (or the length of the groove 15) along the second direction D2 may be, for example, 3 mm, about 5 mm, about 10 mm, or 100 mm, and the upper limit is 5 m or less, 2 m or less, 1 m or less, or It may be 50 cm or less.

  The lower limit of the length of the cutting board sheet 10 in the first direction D1 (longitudinal direction L) may be, for example, 10 cm, 30 cm, 50 cm, 1 m, 3 m, 5 m, and the upper limit may be, for example, 1 m, 5 m, 10 m, 30 m, 50 m. The width of the cutting board sheet 10 is not more than the length of the cutting board sheet 10 in the first direction D1, and may be, for example, 10 cm, 30 cm, 50 cm, 1 m, 3 m, and 5 m.

  The cutting board sheet 10 is used as follows, for example. The user tears the cutting board sheet 10 by hand to a desired size, and flattens the torn portion and lays it on the cutting board. Since the thickness of the base material layer 12 is small, the user can easily tear the cutting board sheet 10 by hand with the groove 15 portion (the portion where the protrusion 13 does not exist) as a boundary. Since the protrusion 13 extends along the second direction D2, that is, the groove 15 extends along the second direction D2, the user can easily tear the cutting board sheet 10 along the second direction D2. In addition, since the substrate sheet 12 in the groove 15 portion is thin, the cutting board sheet 10 has high flexibility as a whole. Therefore, even when the cutting board sheet 10 is provided in a roll shape in advance, the user can tear the cutting board. The sheet 10 can be easily flattened. The user cuts an arbitrary ingredient on the cutting board sheet 10 with a knife. Since the height of the protrusion 13 is set to be larger than the thickness of the base material layer 12, the entire thickness of the cutting board sheet 10 is increased, and as a result, the cut resistance is improved. Therefore, the cutting board sheet 10 is hardly damaged by a knife.

  As described above, the cutting board sheet according to the present embodiment is a cutting board sheet extending in the first direction, and has a base layer made of a thermoplastic resin having a thickness of 65 μm or more and 160 μm or less, and the first of the base material layers. A plurality of thermoplastic resin protrusions provided on one surface, arranged at predetermined intervals along the first direction, and extending along a second direction intersecting the first direction; It is larger than the thickness of the base material layer.

  Since the thickness of the base material layer is 65 μm or more and 160 μm or less and the height of the protrusion is set to be larger than the thickness, the thickness of the sheet body is increased as a whole, and as a result, the cut resistance is improved. On the other hand, since the portion sandwiched between two adjacent projections (the portion of the base material layer where no projections are present) is thin, the flexibility of the cutting board sheet is increased, and it is easy to return the cutting board sheet to a flat state Become. Therefore, the flatness can be improved while ensuring the cut resistance of the cutting board sheet. In addition, the cutting board sheet can be easily torn along the thin part.

(Second Embodiment)
FIG. 3 shows an example of a cross section of the cutting board sheet 20 when the cutting board sheet 20 according to the second embodiment is viewed along the width direction. The cutting board sheet 20 further includes an anti-slip layer 14 on at least a part of the second surface 17 of the base material layer 12. When the cutting board sheet 20 is used, the cutting board sheet 20 is laid on a plate material or a stand with the anti-slip layer 14 on the bottom and the protrusions 13 on the top. Accordingly, the plurality of protrusions 13 receive the knife blade.

  The anti-slip layer 14 is composed of a planar member, and plays a role of preventing the cutting board sheet 20 laid on the board or the base from sliding on the board or the base. The material of the anti-slip layer 14 is not limited, and may be, for example, paper, nonwoven fabric, polyurethane, urethane resin, or olefin elastomer resin. The anti-slip layer 14 may or may not have water absorption. When the anti-slip layer 14 is made of paper or non-woven fabric, the cutting board sheet 20 is wetted on the board or table, or the cutting board 20 is laid on the board or board after the anti-slip layer 14 is wetted. 20 is firmly attached to the plate or the base. By this action, it is possible to prevent the cutting board sheet 20 from slipping on the plate material or the table. Polyurethane, urethane resin, and olefin elastomer resin have low water absorption, but these materials themselves have a high coefficient of static friction and function as anti-slip. The anti-slip layer 14 may be attached to the second surface 17 of the base material layer 12 with an adhesive. Further, the cutting sheet 20 may be formed on the anti-slip layer 14 by extruding and pressurizing a heated thermoplastic resin. The joining method of the anti-slip layer 14 and the sheet body 11 is not limited to the above-described means, and various means may be used.

  The anti-slip layer 14 is provided on at least a part of the second surface 17 of the base material layer 12. For example, the anti-slip layer 14 is provided in a region of 10% or more, 20% or more, or 50% or more on the second surface 17 and an area of 80% or less, 90% or less, or 100% or less.

  When the anti-slip layer 14 does not absorb water, the static friction coefficient of the surface of the anti-slip layer 14 is 0.8 or more. Further, when the anti-slip layer 14 is, for example, polyurethane, urethane resin, or olefin elastomer resin, the surface roughness of the anti-slip layer 14 is 0.5 to 2.0 μm. The surface roughness of the non-slip layer 14 can be measured by, for example, a non-contact type surface roughness meter (NewView (registered trademark) 6000, manufactured by ZYGO).

  The anti-slip layer 14 may be composed of a single material, or may be composed of a plurality of different materials stacked in layers. For example, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), syndiotactic polystyrene (SPS), polyphenylene sulfide (PPS), polycarbonate (PC), polyarylate (PAr), polysulfone (PSF), polyester sulfone (PES) The anti-slip layer 14 may be formed by providing a layer of polyurethane, urethane resin or olefin elastomer resin on the surface of the layer of polyetherimide (PEI) or transparent polyimide (PI).

  The cutting board sheet 20 is used as follows, for example. The user tears the cutting board sheet 20 to a desired size by hand, flattenes the torn portion, and lays it on a rigid table. For example, a cutting board is used as a highly rigid base. Since the thickness of the base material layer 12 is small, the user can easily tear the chopping board sheet 20 by hand with the groove 15 portion (the portion where the protrusion 13 does not exist) as a boundary. In addition, since the base plate 12 at the groove 15 is thin, the cutting board sheet 20 has high flexibility as a whole. Therefore, even when the cutting board sheet 20 is provided in a roll shape in advance, the user can tear the cutting board. The sheet 20 can be easily flattened. When the anti-slip layer 14 is made of paper or non-woven fabric, the surface of the cutting board or the entire anti-slip layer 14 is wetted with water, and the water is cut off, and then the cutting board sheet 20 is laid, thereby providing the anti-slip layer. The whole of 14 touches the cutting board surface firmly through water. This also contributes to the high flatness of the cutting board sheet 20. The user cuts an arbitrary ingredient on the cutting board sheet 20 with a knife. Since the height of the protrusion 13 is set to be larger than the thickness of the base material layer 12, the entire thickness of the cutting board sheet 20 is increased, and as a result, the cut resistance is improved. Therefore, the cutting board sheet 20 is hardly damaged by a knife.

  The cutting board sheet 20 according to the present embodiment further includes an anti-slip layer 14 provided on the second surface 17 of the base material layer 12 that is the surface opposite to the first surface 16. Therefore, the coefficient of static friction between the anti-slip layer 14 and the plate material or the table can be increased, and the cutting board sheet 20 becomes more difficult to slip.

  When the anti-slip layer 14 has water absorption, the anti-slip layer 14 comes into contact with a plate material or a table via water. Therefore, due to the surface tension of water, the force that the cutting board sheet 20 sticks to the plate material or the base works, and it becomes easy to maintain the flatness of the cutting board sheet 20.

  In each of the above embodiments, an example in which the cutting board sheet is used for cooking with a kitchen knife is shown, but the use of the cutting board sheet is not limited to this. For example, a cutting board sheet may be installed on a belt conveyor in a food processing factory and used for conveyance for processing food. In addition, food may be processed (cut, die cut, etc.) on a cutting board sheet in the course of conveyance. For example, the cutting board sheet according to the present embodiment may be used for cutting with a rotary cutter or the like.

  EXAMPLES Hereinafter, although this invention is demonstrated concretely based on an Example, this invention is not limited to them at all.

[Cutting board sheet]
Example 1
Polypropylene was used as the material for the sheet body, and the sheet body was integrally manufactured. The width of the prepared two sheet bodies was about 300 mm, and the length was about 1 m. Next, a kitchen towel 100 manufactured by Oji Napier Co., Ltd., which is a single-layer kitchen paper, is attached to the second surface of the base material layer of one sheet with a double-sided tape. Layer). The remaining one sheet was used as it was as a cutting board sheet according to Example 1 (no anti-slip layer). About these two types of cutting board sheets, the height (h1) of the protrusions was 99 μm, and the thickness (h2) of the base material layer was 74 μm. The distance (d1) between adjacent protrusions was 227 μm, and the root width (w1) and tip width (w2) of the protrusions were 76 μm and 50 μm, respectively. These dimensions were measured using a microscope with a magnification of 200 times. Each chopping sheet was wound into a roll by winding it around a paper tube having a diameter of 76 mm so that the first surface of the sheet body was inside.

(Example 2)
Polypropylene was used as the material for the sheet body. About two types of cutting board sheets, the height (h1) of the protrusion was 174 μm, and the thickness (h2) of the base material layer was 90 μm. Except these points, it was the same as Example 1.

(Example 3)
Polyethylene was used as the material for the sheet body. About two types of cutting board sheets, the height (h1) of the protrusion was 156 μm, and the thickness (h2) of the base material layer was 65 μm. Except these points, it was the same as Example 1.

(Comparative Example 1)
Polypropylene was used as the material for the sheet body. About two types of cutting board sheets, the height (h1) of the protrusion was 175 μm, and the thickness (h2) of the base material layer was 161 μm. Except these points, it was the same as Example 1.

(Comparative Example 2)
Polyethylene was used as the material for the sheet body. About two types of cutting board sheets, the height (h1) of protrusion was 69 micrometers, and the thickness (h2) of the base material layer was 364 micrometers. Except these points, it was the same as Example 1.

Table 1 shows an outline of these five patterns.

[Cooking utensils]
A cutting board and a kitchen knife were prepared to verify the performance of the cutting board sheet. The chopping board was “3M Fresh Natural Chopping Board” (made of polylactic acid, thickness 4 mm) manufactured by 3M Korea, the knife was made by J. K. A. It was the Safe Grip series (stainless steel, length 140 mm) manufactured by Henkels International.

[Verification of tearing]
For each of the 5 patterns × 2 types (with / without anti-slip layer), a cutting board sheet of 25 cm × 30 cm was obtained by pulling out from the roll and tearing by hand, and the ease of tearing at this time was verified.

[Verification of flatness]
The flatness of each of the five cutting board sheets was verified as follows. First, the whole cutting board was uniformly wetted with water and the water was cut off, and then a cutting board sheet was laid on the cutting board so that the second surface of the anti-slip layer or the base layer faced on the board or the board. The iron roller having a weight of 2 kg was rotated once from one end of the cutting board sheet to the other end. One minute after this rolling, the flatness of the cutting board sheet was verified.

[Verification of cut resistance 1]
Cut resistance was verified for each of 5 patterns × 2 types (with / without anti-slip layer) as follows. Vegetable mix (cabbage and onion), takuan, and salad chicken (steamed chicken) were cut with a knife on a cutting board sheet laid on a cutting board. All these ingredients were purchased at 7-Eleven. After cutting these ingredients, the scratches on the cutting board sheet were observed.

[Verification of cut resistance 2]
Cut resistance was verified for each of 5 patterns × 2 types (with / without anti-slip layer) as follows. Cut resistance was verified using a universal testing machine RTC-1225A manufactured by Orientec Co., Ltd. First, a sample of a cutting board sheet cut into a size of 50 mm × 100 mm was prepared for each of the five patterns. The sample was placed on the above cutting board and fixed to the lower chuck of the testing machine via a jig. A leather blade (width 38 mm, height 17 mm, blade thickness 0.5 mm) was fixed to the upper chuck of the test machine so that the blade edge was perpendicular to the sample and evenly. Then, the testing machine was operated to bring the blade edge of the leather blade into contact with the sample at a speed of 50 mm / min. A force of 0.2 MPa was applied to the sample, and the degree of damage of the sample at this time was confirmed.

[inspection result]
The verification results are shown in Table 2 below. The tearability is an evaluation item indicating whether or not the cutting board sheet was easily torn by hand. Flatness is an evaluation item indicating whether or not the cutting board sheet is in a flat state. Cut resistance is an evaluation item indicating the degree of suppression of damage or cutting by the knife blade. Evaluation values were set as follows for each of tearability, flatness, and cut resistance.
<Tearability>
-A: It was able to tear firmly.
C: Could not be torn.
<Flatness>
A: Almost flat.
-B: Some floating occurred at the end.
-C: Roundness remained.
<Cut resistance 1, 2>
A: The cutting board sheet did not tear.
C: A tear occurred in at least a part of the cutting board sheet.

  The present invention has been described in detail above based on the embodiments and examples. However, the present invention is not limited to the above-described embodiments and examples. The present invention can be variously modified without departing from the gist thereof.

DESCRIPTION OF SYMBOLS 10,20 ... Cutting board sheet, 11 ... Sheet | seat main body, 12 ... Base material layer, 13 ... Protrusion, 14 ... Anti-slip layer, 15 ... Groove

Claims (6)

A cutting board sheet extending in a first direction,
A base material layer made of a thermoplastic resin having a thickness of 65 μm or more and 160 μm or less;
A plurality of projections made of a thermoplastic resin provided on the first surface of the base material layer, arranged at a predetermined interval along the first direction, and extending along a second direction intersecting the first direction; With
The height of the protrusion is larger than the thickness of the base material layer,
Cutting board sheet.   The cutting board sheet | seat of Claim 1 further equipped with the anti-slip | skid layer provided on the 2nd surface of the said base material layer which is a surface on the opposite side to the said 1st surface. The anti-slip layer has water absorption,
A cutting board sheet according to claim 2. The anti-slip layer has a static friction coefficient of 0.8 or more, and the anti-slip layer has a surface roughness of 0.5 to 2.0 μm.
A cutting board sheet according to claim 2. The height of the protrusion is 70 to 225 μm, and is 1.3 times to 2.5 times the thickness of the base material layer.
The cutting board sheet as described in any one of Claims 1-4.   The cutting board sheet as described in any one of Claims 1-5 provided in the state wound along the said 1st direction.

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