JP2009220827A - Packaging sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging sheet that can easily cover the entire surface of a product with a single sheet and can package the product beautifully, with almost no wrinkles made in the surface of the sheet in which the product has been wrapped. <P>SOLUTION: The packaging sheet has n pieces of cutting start points A located on an imaginary first circumference S1 on the inside of the packaging sheet 30 of a predetermined size, at equally divided n-positions on the first circumference S1. The packaging sheet also includes n pieces of cutting terminal points B located on an imaginary second circumference S2 having a center point 30d in common with the first circumference S1 and having a radius smaller than that of the first circumference S1, at equally divided n-positions on the second circumference S2 and at positions apart by a predetermined distance from straight lines between the center point 30d and the cutting start points A. Additionally, the packaging sheet includes n pieces of peripheral flaps 30a formed along the periphery of the packaging sheet 30 so as to extend outward from this packaging sheet 30 between the cutting start points A, and n pieces of cuts 35 linearly connecting each cutting start point A and the corresponding cutting terminal point B located nearest to this cutting start point A. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a packaging sheet used for packaging cylindrical products and the like.

  Conventionally, as a packaging sheet for packaging a cylindrical product, for example, as shown in FIGS. 7 and 8, there is one that forms a single packaging sheet by combining a plurality of bamboo leaves. The packaging sheet 10 is, for example, an inner packaging of Toyama's signature sushi sushi, with the center point 10e as the center point 10e from the center of the persimmon leaf 10a, and eight persimmon leaves 10a around the center point 10e. Are arranged in a radial pattern shifted by an equal angle, and stacked in an arbitrary order. In FIG. 7, two circumferences drawn by imaginary lines inside the packaging sheet 10 are determined by the external dimensions of the cylindrical product 12 accommodated inside. Specifically, when the radius of the bottom surface 12b of the cylindrical product 12 accommodated in the packaging sheet 10 is R2, and the height of the side surface 12a is H, the first circumference S1 is a circle of radius (R2 + H), the second Is a circle having a radius R2. The bamboo leaf 10a is formed to have a length of about 2 · R1 in the longitudinal direction and a width of about R2 in the short direction.

  Hereinafter, for each part of the packaging sheet 10, the outer part of the first circumference S1 is the outer peripheral piece 10b, the part from the first circumference S1 to the second circumference S2 is the intermediate part 10c, and the second circle. A portion inside the circumference S2 is referred to as an inner portion 10d.

  Next, a packaging method using the packaging sheet 10 will be described. In this packaging method, a cylindrical box body 14 having an opening 14a slightly larger than the outer diameter of the cylindrical product 12 and having a depth slightly deeper than the height H of the cylindrical product 12 is used. . First, as shown to Fig.8 (a), the packaging sheet 10 is arrange | positioned above the box 14 so that the center of the 2nd periphery S2 and the opening part 14a may match. And the cylindrical product 12 is arrange | positioned above the packaging sheet 10, and it inserts in the opening part 14a through the packaging sheet 10. FIG. Then, the intermediate portion 10c of each bamboo leaf 10a is sandwiched between the side surface 12a of the cylindrical product 12 and the inner side surface 14b of the box body 14, and is bent substantially perpendicular to the inner portion 10d. The cylindrical product 12 is inserted until the bottom surface 12b contacts the inner bottom surface 14c of the box body 14 via the inner portion 10d. At this time, as shown in FIG. 8 (b), the outer portion 10b of the eight bamboo leaves 10a is along the side surface 12a of the cylindrical product 12 so as to overlap the inner and outer sides with the right and left outer portions 10b. It becomes a simultaneous state.

  Next, as shown in FIG. 8C, the outer portion 10 b is bent at a substantially right angle toward the center direction of the upper surface 12 c of the cylindrical product 12. At this time, among the eight outer portions 10b, the top surface where the outer portions 10b are folded is finished into a clean flat surface as shown in FIG. Then, the lid 16 is covered from above and tied with a string (not shown) to complete the packaging.

In addition, as disclosed in Patent Document 1, a folding sheet is formed by forming a packaging sheet into a cylindrical shape, containing the product, and cutting at a predetermined interval in the upper-circumferential portion of the cylinder. A container that is bent into a circle in accordance with the upper surface of the product is disclosed.
JP 2005-162864 A

  However, in the method of packaging using the bamboo leaves 10a, in order to cover the entire surface of the cylindrical product 12 without any gaps, the center points 10e of the eight bamboo leaves 10a are neatly aligned. It was necessary to stack the shafts with the same angle as much as possible, and the work was cumbersome and time-consuming.

  Moreover, in the wrapping paper of patent document 1, the operation | work which assembles the sheet piece formed by the punching by the metal mold | die etc. in the cylindrical shape, and seals a predetermined location with an adhesive agent etc. was required. Moreover, the operation | work which bends inward so that the bending piece formed in the upper end periphery part of a cylinder may overlap with the bending piece of both right and left adjacent in order was troublesome. On the other hand, instead of making a cut, a structure in which the surplus part is folded into a predetermined shape is also conceivable, but in order to fold it neatly, a process such as making a crease in advance is necessary, which is also troublesome. It was.

  The present invention has been made in view of the above-described background art, and can easily cover the entire surface of a cylindrical product using a single sheet, so that the surface of the sheet is almost free from wrinkles in a packaged state. An object of the present invention is to provide a packaging sheet capable of performing good packaging.

  The present invention is located on a virtual first circumference located inside a sheet having a predetermined size, and is provided with n cutting start points provided at positions obtained by equally dividing the first circumference onto n. And the first circumference and the center point are equal, and a virtual second circumference having a radius smaller than the first circumference is equally divided into n, and the center point and the cut start point are N cut end points provided at a predetermined distance from a straight line connecting the two, and n outer peripheral pieces formed on the outer peripheral portion of the sheet extending outward from the sheet between the cut start points. The packaging sheet is formed with n cuts that linearly connect each cut start point and each cut end point closest to the cut start point.

  The n is an integer of 5 or more, the outer peripheral piece is bent in a direction perpendicular to the inner side along the second circumference, and the front and back surfaces of the cut portion of each outer peripheral piece are At the time of bending, it is continuous so that it may be pinched | interposed into each said outer peripheral piece of the both sides. Further, the outer peripheral piece is a packaging sheet formed in a bamboo leaf shape.

  According to the packaging sheet of this invention, the entire side surface, bottom surface, and top surface of the cylindrical product can be covered with a single sheet. In addition, it is possible to realize a packaged state in which the surface of the packaging sheet is hardly wrinkled in a packaged state and has a good appearance. Further, if a jig having a cylindrical hole is used, the overlapping portion of the sheets can be finished regularly and neatly without requiring skill. Furthermore, since these packaging sheets and jigs have a simple structure, automation of the packaging operation is easy.

  1st Embodiment of the packaging sheet of this invention is described based on FIGS. In addition, the structure similar to the packaging sheet 10 demonstrated by the above-mentioned background art attaches | subjects and demonstrates the same code | symbol. The packaging sheet 30 is a sheet material generally used for packaging, such as a paper material, a synthetic resin film such as vinyl chloride or polyethylene, or a dedicated paper for food packaging.

  As shown in FIG. 1, the packaging sheet 30 is cut out from a sheet material having a substantially circular outline 32 by punching or the like. On the inner side of the contour 32, twelve cutting start points A that divide the first circumference S2 around the center point 30d into 12 equal parts are set. Next, the center point 30d is equally divided into 12 equal parts on the second circumference S2 having a radius smaller than the first circumference S1, and the straight line connecting the center point 30d and the cut start point A is divided. Twelve incision end points B are set at positions slightly apart. Twelve outer peripheral pieces 30a that connect adjacent cut start points A are formed. The outer peripheral piece 30a is formed in a shape like a horizontal half of a bamboo leaf. Further, a cut 35 that linearly connects the cut start point A and the cut end point B closest to the cut start point A is entered. Further, when the bending process described later is performed, in order to prevent stress from concentrating in the vicinity of the cut end point B and causing cracks, a small arc-shaped cut 36 is provided following the cut end point B. .

  Here, for the following explanation, for each part of the packaging sheet 30, the part from the first circumference S1 to the second circumference S2 is the intermediate part 30b, and the part inside the second circumference S2 is the inner part. 30c.

  Next, a packaging method using the packaging sheet 30 will be described. In the present embodiment, a cylindrical box body 14 having an opening 10a slightly larger than the outer diameter of the cylindrical product 12 and having a depth slightly deeper than the height H of the cylindrical product 12 is used. . First, as shown to Fig.2 (a), the center point 30d of 2nd circumference S2 and the center point of the opening part 14a of the box 14 which has a cylindrical internal shape correspond in the packaging sheet 30. FIG. Thus, it arrange | positions above the box 14. And the cylindrical product 12 is arrange | positioned above the packaging sheet 30, and it inserts in the opening part 14a via the packaging sheet 30. FIG.

  Then, the intermediate portion 30b of the packaging sheet 30 is sandwiched between the side surface 12a of the cylindrical product 12 and the inner side surface 14b of the box body 14, and is bent substantially perpendicular to the inner portion 30c. The cylindrical product 12 is inserted until the bottom surface 12b contacts the inner bottom surface 14c of the box body 14 via the inner portion 30c. At this time, as shown in FIG. 2B, the 12 outer peripheral pieces 30a of the packaging sheet 30 are regularly sandwiched between the right and left adjacent outer peripheral pieces 30a on the front and back surfaces of each outer peripheral piece 30a. It will be in a state of being simultaneous while overlapping.

  Here, the operation in which the outer peripheral pieces 30a are continuous while overlapping in one direction as described above will be described with reference to FIGS. In FIGS. 3 and 4, for convenience of explanation, five outer peripheral pieces 3 oa are formed, but the operation principle of the above-described packaging sheet 30 is the same.

  As shown in FIG. 3, the outer peripheral piece 30a1 has a cut 35 along the cut start point A1 and the cut end point B1 on the left side, and a cut 35 along the cut start point A2 and the cut end point B2 on the right side. Is put. On the other hand, the outer peripheral piece 30a2 has a cut 35 along the cut start point A2 and the cut end point B1 on the left side, and a cut 35 along the cut start point A3 and the cut end point B3 on the right side. And when the cylindrical product 12 is inserted in the opening part 14a via the packaging sheet 30, the outer peripheral piece 30a1 will be substantially bent along the line which connects the cutting end points B1 and B2. At this time, the distance a between the line connecting the cutting end points B1 and B2 and the cutting start point A1, and the distance b between the line connecting the cutting end points B1 and B2 and the cutting start point A2 are expressed by the following equations. Is done.

a = R1 · cos (θ−α) −R2 · cos θ (1)
b = R1 · cos (θ + α) −R2 · cos θ (2)
Here, R1 is a radius of the first circumference S1, R2 is a radius of the second circumference S2, θ is a half value of an angle obtained by dividing 360 degrees by 5, and α is a center point 30d. An angle between a straight line connecting the cut start point A1 and a straight line connecting the center point 30d and the cut end point b1, and θ> α.

  As shown in FIG. 3 and equations (1) and (2), a relationship of a> b is established between the distance a and the distance b.

  When the cylindrical product 12 is inserted into the opening 14a via the packaging sheet 30, the outer peripheral piece 30a1 is bent along a line connecting the cutting end points B1 and B2, and is located at the cutting start point A2. The cut point portion A21 rises. At the same time, the outer peripheral piece 30a2 is also bent along a line connecting the cut end points B2 and B3, and the cut point portion A22 located at the cut start point A2 rises. Then, the cut point portion A21 and the cut point portion A22 overlap each other so as to intersect.

  Further, when the outer peripheral piece 30a1 is bent by an angle β by insertion of the cylindrical product 12, the incision point portion A21 rises to a height of H (A21) = b · sin β as shown in FIG. is doing. As shown in FIG. 4C, when the outer peripheral piece 30a2 is bent by the same angle β, the cut point portion A22 rises to a height of H (A22) = a · sin β. Accordingly, since there is a relationship of a> b between the distance a and the distance b, in the process in which the bending angle β changes from 0 degree to 90 degrees, the incision point portion A22 is more than the incision point portion A21. Always has a large bending height and rises ahead. That is, when the outer peripheral piece is bent at the same time, the outer peripheral piece 30a2 and the outer peripheral piece 30a2 are always overlapped by the outer peripheral piece 30a2.

  According to such a principle, the 12 outer peripheral pieces 30a of the packaging sheet 30 have a shape in which the front and rear surfaces of each outer peripheral piece 30a are sandwiched between the left and right outer peripheral pieces 30a as shown in FIG. It will be in the state of being simultaneous while overlapping.

  Next, as shown in FIG. 2 (c), an operation is performed in which the twelve outer peripheral pieces 30 a are bent substantially at right angles toward the center of the upper surface 12 c of the cylindrical product 12. The outer peripheral piece 30a is simultaneously folded inward along the upper end of the side surface 12a of the cylindrical product 12, and the twelve outer peripheral pieces 30a are stacked while being sandwiched between the outer peripheral pieces on both the left and right sides to form a clean plane, The upper surface 12c of the cylindrical product is covered. Then, the lid 16 is covered from above and tied with a string (not shown) to complete the packaging.

  In addition, the shape of the outer peripheral piece 30a is set so that a gap does not occur in the upper surface center portion 34 and a surplus portion that causes a wrinkle or a step does not occur as a state after packaging. However, there may be a case where the gap is generated due to variation in the shape of the cylindrical product 12 to be accommodated, positioning variation at the time of packaging, or the like, and a surplus portion is generated and wrinkles or steps are generated. In such a case, the outer shape of the outer peripheral piece 30a may be formed smaller in advance to prevent the generation of wrinkles and steps, and the gap generated in the central portion 34 may be covered with a seal piece or the like.

  As described above, according to the present embodiment, the side surface 12a, the bottom surface 12b, and the top surface 12c of the cylindrical product 12 can be easily covered with a single packaging sheet in a regular shape. Easy handling of the packaging sheet. In addition, after packaging, the packaging sheet surface is almost free of wrinkles, and an excellent packaging state can be realized. Moreover, the box body 14 used as a packaging box works as it is, and can easily finish the overlapping portion of the sheets. Furthermore, the packaging sheet 30 can be cut out with a simple punching die, and there is no need for operations such as bending and partial adhesion as pre-processing of packaging.

  This embodiment is also suitable for packaging of pressed sushi formed in a thin cylindrical shape, for example. In this case, the outer shape of the pressed sushi main body and the outer shape after packaging are finished almost the same and are not bulky, so that there are advantages such as being useful when carried by a person who purchased for souvenirs. Moreover, since it can also respond | correspond easily to automation of a packaging operation, it can contribute to the improvement of the work efficiency of the packaging of the pressed sushi manufactured in large quantities.

  Next, 2nd embodiment of the packaging sheet of this invention is described based on FIG. 5, FIG. In addition, the structure similar to the above-mentioned packaging sheet 30 and its packaging method attaches | subjects the same code | symbol, and abbreviate | omits description. The packaging sheet 50 is cut out from a sheet material having a substantially circular outline 52. First, as shown in FIG. 5, twelve cutting start points A that divide the first circumference S <b> 2 around the center point 50 d into 12 equal parts are set inside the substantially circular outline 52. Similarly, the center point 50d is the center, the second circumference S2 having a radius smaller than the first circumference S1 is equally divided into 12 parts, and the center point 50d is separated from the straight line connecting the cut start point A. Twelve cutting end points B are set at the position. Then, twelve outer peripheral pieces 30 a are similarly formed in the contour 52, and a cut 55 is made in a locus connecting the cut start point A and the cut end point B, thereby forming the packaging sheet 50. The packaging sheet 50 is set in accordance with the outer dimensions of the cylindrical product 56 that is an object to be packaged, and the size of the contour 52 can be obtained by bundling the tips of 12 tongue pieces with a ribbon 62 as will be described later. It is set as long as possible. Further, the cutting end point B is provided with a cutting 54 for stress dispersion.

  Hereinafter, for each part of the packaging sheet 50, the part from the first circumference S1 to the second circumference S2 is the intermediate part 50b, and the part inside the second circumference S2 is the inner part 50c, as described above. Called.

  Next, a packaging method using the packaging sheet 50 will be described. Unlike the first embodiment, this embodiment is a packaging form that does not use a packaging box, and therefore has an opening 58a slightly larger than the outer diameter of the cylindrical product 12, and the depth is cylindrical. A bending jig 58 having a cylindrical inner shape deeper than the height H of the shaped product 56 is used. First, as shown to Fig.6 (a), the packaging sheet 50 is arrange | positioned above the bending jig | tool 58 so that the center of the 2nd periphery S2 and the opening part 58a may match. And the cylindrical product 56 is arrange | positioned above the packaging sheet 50, and is inserted in the opening part 58a via the packaging sheet 50. FIG. Then, the intermediate portion 50b of the packaging sheet 50 is sandwiched between the side surface 56a of the cylindrical product 56 and the inner side surface 58b of the bending jig 58, and is bent substantially perpendicularly to the inner portion 50c. The cylindrical product 56 is inserted until the bottom surface 56b comes into contact with the floor surface 60 via the inner portion 50c. At this time, as shown in FIG. 6 (b), the 12 outer peripheral pieces 50a of the packaging sheet 50 are continuous while overlapping in such a manner that the front and rear surfaces of each outer peripheral piece are sandwiched between the right and left outer peripheral pieces. It becomes a state. The operation in which the outer peripheral pieces 30a are continuous while overlapping in one direction is the same as in the case of the first embodiment.

  Next, twelve continuous outer peripheral pieces 50a are bent from the outside toward the center of the upper surface 12c of the cylindrical product 12, and the tips of the outer peripheral pieces 50a gathered at the central portion are bundled with a ribbon 62 to complete the packaging. To do.

  In addition, when bundled with a ribbon or the like as in this embodiment, a packaging sheet made of a relatively soft material such as cloth or paper is preferable. However, if it is too soft, there is a possibility that the outer peripheral piece 50a overlaps in one direction and cannot be operated in a continuous manner. In this case, the intermediate portion 30b and the inner portion 50c are preliminarily subjected to a curing process (such as spraying). And what is necessary is just to maintain the shape.

  As described above, according to the present embodiment, since the entire side surface 12a, bottom surface 12b, and top surface 12c of the cylindrical product 12 can be covered with a single packaging sheet, the packaging sheet can be handled in the packaging operation. Easy. The present embodiment is also suitable for cases where small confectionery or the like is packed in a resin bag and packaging a product whose form changes, and the packaging sheet and method of the present embodiment are used. Can be easily packaged, and an excellent decorative effect can be obtained.

  In addition, this invention is not limited to the said embodiment, The number n of the outer periphery pieces of a 2nd circumference is the value of 5 or more sheets which can be connected in succession while it is pinched | interposed by the right and left adjacent outer periphery pieces. There is no limitation to 12 sheets. Further, the outer peripheral piece is not limited to the shape of the leaves of the same size, and the outline can be any shape such as a rectangle or an ellipse as long as the entire side surface 12a, bottom surface 12b, and top surface 12c of the cylindrical product 12 can be covered. Good. In addition, the shape of the cut connecting the cut start point and the cut end point is not limited to a straight line, and may be a slow curve as long as each cut has the same shape. Further, the cutting start point A and the cutting end point B do not have to be strictly equal to the first circumference S1 or the second circumference S2, and are provided with a slight length change for decoration purposes. Etc.

It is a top view which shows 1st embodiment of the packaging sheet of this invention. It is the cross-sectional view and perspective view explaining the packaging method using the packaging sheet of 1st embodiment. It is a top view explaining operation | movement of 1st embodiment. It is the top view and side view explaining operation | movement of 1st embodiment. It is a top view which shows 2nd embodiment of the packaging sheet of this invention. It is the cross-sectional view and perspective view explaining the packaging method using the packaging sheet of 2nd embodiment. It is a top view which shows the conventional packaging sheet. It is the cross-sectional view and perspective view explaining the packaging method using the conventional packaging sheet.

Explanation of symbols

12, 56 Cylindrical products 30, 50 Packaging sheets 30a, 50a Outer peripheral pieces 30b, 50b Intermediate portions 30c, 30c Inner portions 30d, 30d Center point 32 Contour 35, 36, 54, 55 Cut S1 First circumference S2 Second Circumference A cutting start point B cutting end point

Claims (3)

N cutting start points provided on a virtual first circumference located inside a sheet of a predetermined size, provided at a position obtained by dividing the first circumference into n equal parts,
The first circumference and the center point are equal and the virtual second circumference having a radius smaller than the first circumference is equally divided into n, and the center point and the cut start point are connected. N cutting end points provided at a predetermined distance from the straight line;
N pieces of outer peripheral pieces formed on the outer peripheral portion of the sheet extending outward from the sheet between the cut start points;
A packaging sheet, wherein each of the cut start points and n cuts that linearly connect the cut end points closest to the cut start points are formed.   The n is an integer of 5 or more, the outer peripheral piece is bent in a direction perpendicular to the inner side along the second semicircular circumference, and the front and back surfaces of the cut portion of each outer peripheral piece are: The packaging sheet according to claim 1, wherein the packaging sheets are arranged so as to be sandwiched between the outer peripheral pieces adjacent to each other at the time of bending. The packaging sheet according to claim 2, wherein the outer peripheral piece is formed in a bamboo leaf shape.

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