JP2007268886A - Embossing device, combination of embossing molds, embossing method, and sheet-like base material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an embossing device etc. for embossing a sheet-like base material for easily forming a packaging container etc. with a curved corner. <P>SOLUTION: The embossing device 10 for the sheet-like base material comprises: a first male mold 11 in which a plurality of rows of first linear protrusions 21 are arranged almost in parallel, and which makes the width of the first protrusion 21 smaller in dimension than an interval between the protrusions 21; a second male mold 12 in which a plurality of rows of second linear protrusions 22 are arranged almost in parallel, which makes the width of the second protrusion 22 smaller in dimension than an interval between the second protrusions 22 and an interval between the first protrusions 21, and which makes the interval between the second protrusions 22 greater in dimension than the width of the first protrusion 21; a male-mold holding means 13 having the male molds 11 and 12 provided in positions to put the first protrusion 21 between the second protrusions 22, respectively, when the first and second male molds 11 and 12 are engaged with each other; and a base-material installing means 14 for installing the sheet-like material. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an embossing apparatus, a combination of embossing molds, an embossing method, and an embossed sheet-like substrate.

  As a packaging container for cigarettes and confectionery, a substantially rectangular parallelepiped shape is often used. As a development of the packaging container having such a shape, a shape in which some corners (sides) of the container are curved (rounded) instead of perpendicularly is known. By curving the corners of the container, the container can have a softer atmosphere, and the design of the container can be improved.

On the other hand, it is known to perform embossing by embossing on a sheet substrate such as a packaging material. Embossing applies pressure by sandwiching a sheet base material between a male metal plate having protrusions and a female metal plate having recesses corresponding to the protrusions, so that patterns such as letters and figures are applied to the sheet base material. This is a processing technique that makes it stand out (see, for example, Patent Document 1). For embossing, a female mold and a male mold are each cylindrical, and a method is generally used in which a sheet base material is passed between both molds and the male mold and the female mold are rotated while meshing with each other. Has been done.
JP-A-5-124626

  A container with curved corners is formed using a sheet-like base material (mainly paper), but when the base material is bent and its end is attached to another position of the base material, the base material is flat. In some cases, it was difficult to attach the substrates together. Moreover, an adhesive part may peel off when the adhesiveness of the used adhesive agent is inadequate after bonding base materials.

  Accordingly, the present invention provides a method for facilitating the formation of a packaging container or the like having such a curved corner, and includes an embossing device for a sheet-like substrate, a combination of embossing molds, a sheet An object of the present invention is to provide an embossing method for a substrate and an embossed sheet-like substrate.

  An embossing device for a sheet base material of the present invention that solves the above problem is an embossing device for embossing a sheet-like base material, wherein a plurality of linear first convex portions are arranged substantially in parallel. A plurality of first male molds each having a width of the convex portion smaller than the interval between the first convex portions and a plurality of linear second convex portions are arranged substantially in parallel, and the width of the second convex portion is the second convex portion. A second male mold that is smaller than the interval between the first protrusions and the interval between the first protrusions, and the interval between the second protrusions is larger than the width of the first protrusions, and the first male mold When the first convex portion and the second convex portion of the second male mold are engaged with each other, the first male mold is located at a position where each of the first convex portions enters between the second convex portions. And a male mold holding means provided with the second male mold, and a base material installing means for installing the sheet-shaped base material between the first male mold and the second male mold, Characterized in that it has.

  According to the present invention, by embossing (embossing) using two male molds in which linear convex portions are arranged, a clear linear concave portion can be formed on the sheet-like base material. it can. Since such concave portions are formed on both front and back surfaces of the sheet-like base material, when the base material is bent along a straight line, the concave portion is widened on one side (for example, the front side), and the other side (for example, the back side) is When the concave portion is narrowed, the embossed portion is easily bent. Therefore, when bending the base material and pasting the extension piece to another position of the base material by performing the above-mentioned embossing at the position of the corner to be curved in the sheet-like base material used for a packaging container or the like The base material is prevented from returning to a flat shape, and the adhesive portion is also prevented from peeling off after the base materials are attached to each other. Therefore, productivity at the time of forming a packaging container using a sheet-like base material can be improved.

  In the embossing apparatus of the present invention, the height of the first convex portion in the first male mold and the height of the second convex portion in the second male mold are substantially the same. According to this invention, since the height of each convex part is substantially the same, it becomes easy to form linear embossing sharply and uniformly.

  In the embossing apparatus of the present invention, the width of the first convex portion in the first male mold and the width of the second convex portion in the second male mold are substantially the same, and the first male mold is the same. The interval between the first protrusions in the mold and the interval between the second protrusions in the second male mold are substantially the same, and the height of the first protrusion in the first male mold and the first The height of the 2nd convex part in 2 male type | molds is substantially the same, It is characterized by the above-mentioned.

  According to this invention, the first male mold and the second male mold have substantially the same width, interval, and height, so that concave portions having substantially the same shape are formed on both the front and back surfaces of the sheet-like base material. The Therefore, the moldability when the substrate is curved is improved.

  In the embossing apparatus of the present invention, the number of the first protrusions in the first male mold is different from the number of the second protrusions in the second male mold, and the male mold holding means is When the first convex part of the first male mold and the second convex part of the second male mold are engaged with each other, there is another gap between the convex parts in the male mold having one more convex part. The first male mold and the second male mold are provided at a position where the male convex portion is inserted.

  According to this invention, for example, by arranging seven first convex portions on the first male mold and arranging six second convex portions on the other second male mold, both ends of the first male mold are arranged. Each second convex part of the second male mold is inserted between the first convex parts of the sheet, and seven grooves (concave parts) are formed on one surface of the sheet-like base material, and six grooves (concave parts) are formed on the back surface thereof. it can. A curved container can be formed more stably by curving the surface with many grooves in the substrate outward.

  In the embossing apparatus of the present invention, the first male mold and the second male mold are made of metal, and the first male mold and the second male mold have different hardnesses. It is characterized by.

  According to this invention, when the embossing device is used continuously by making the first male mold and the second male mold to be engaged different in hardness, the soft mold is pushed by the other mold. It will be transformed first. Therefore, when the soft mold is deformed, only the mold needs to be replaced, and the hard mold can be used as it is, so that it can be used as an embossing apparatus that is economically excellent.

  In the embossing apparatus of the present invention, a rounded portion is formed at a corner of a tip of the first convex portion and the second convex portion. According to this invention, since the rounded portion is formed at the corner of the tip of each male convex portion, it is possible to prevent the substrate from being damaged by the corner of the male convex portion when embossing is performed.

  The embossing molding die combination of the present invention that solves the above-mentioned problem is that a plurality of linear first convex portions are arranged substantially in parallel, and the width of the first convex portions is smaller than the interval between the first convex portions. A plurality of first male molds and linear second convex portions are arranged substantially in parallel, and the width of the second convex portions is smaller than the interval between the second convex portions and the interval between the first convex portions, And a second male mold in which an interval between the second convex portions is larger than a width of the first convex portion.

  An embossing method for solving the above problem is an embossing method for embossing a sheet-like base material, wherein a plurality of linear first convex portions are arranged substantially in parallel, and the width of the first convex portion is the first. A plurality of first male molds that are smaller than the interval between the first convex portions and a plurality of linear second convex portions are arranged substantially in parallel, and the width of the second convex portion is the interval between the second convex portions and the first convex portion. A first male part of the first male type, wherein the second male part is smaller than the distance between the convex parts and the distance between the second convex parts is larger than the width of the first convex part. And the second male mold and the second convex part are engaged with each other, the first male part and the second male part are located at positions where the first convex parts are between the second convex parts. The sheet-like base material is placed between the first male mold and the second male mold, and the first male mold and the second male mold are Mesh Wherein the embossing by Rukoto.

  The sheet-like equipment of the present invention that solves the above problems is an embossed sheet-like base material, wherein a plurality of linear first convex portions are arranged substantially in parallel, and the width of the first convex portion is the above-mentioned A plurality of first male molds that are smaller than the distance between the first protrusions and a plurality of linear second protrusions are arranged substantially in parallel, and the width of the second protrusions is the distance between the second protrusions and the first protrusions. A second male mold that is smaller than the interval between the first convex portions and the interval between the second convex portions is larger than the width of the first convex portion, and uses the first convex of the first male type. And when the first male part and the second male part of the second convex part are engaged with each other, the first male part and the second male part are located at positions where the first convex part enters between the second convex parts. Two male molds, and the sheet-like base material is installed between the first male mold and the second male mold, and the first male mold and the second male mold To mesh And wherein the embossed Ri.

  According to the embossing apparatus of the present invention, by performing embossing at a corner position to be curved in a sheet-like base material used for a packaging container or the like, the base material is bent and the extension piece is replaced with another base material. It is possible to prevent the base material from returning to a flat shape when being attached to the position, and it is also possible to prevent the adhesion portion from being peeled off after the base materials are attached to each other. Therefore, productivity at the time of forming a packaging container using a sheet-like base material can be improved. The same effect can be obtained by the combination of the embossing mold of the present invention, the embossing method, and the embossed sheet-like base material.

  Below, the embossing apparatus of this invention, the combination of the shaping | molding die for embossing, the embossing method, and the embossed sheet-like base material are demonstrated with reference to drawings. In addition, this embodiment is only one form for implementing this invention, and this invention is not limited by this embodiment.

  FIG. 1 is a schematic view showing an embossing apparatus of the present invention, FIGS. 2A and 2B are enlarged sectional views of an embossing mold of the present invention, and FIG. 1 is an enlarged plan view of 1 male mold. FIG. FIG. 3 is a plan view of the embossing mold of the present invention, FIG. 4 is a development view showing the embossed sheet-shaped substrate of the present invention, and FIG. 5 is the sheet shape of FIG. It is a perspective view which shows the packaging container manufactured from the base material of this.

  FIG. 1 shows a schematic view of an embossing apparatus, and FIG. 2A shows an enlarged cross-sectional view of an embossing mold, embossing (embossing) a sheet-like substrate 30 of the present invention. The processing apparatus 10 includes a plurality of linear first convex portions 21 arranged substantially parallel to each other, the first male mold 11 having a width W1 of the first convex portion 21 smaller than the interval S1 between the first convex portions 21, and a straight line. A plurality of second convex portions 22 are arranged substantially in parallel, and the width W2 of the second convex portions 22 is smaller than the interval S2 between the second convex portions 22 and the interval S1 between the first convex portions 21, and the second convex portions The second male mold 12 has an interval S <b> 2 between 22 larger than the width W <b> 1 of the first convex portion 21. Further, when the embossing device 10 meshes the first convex portion 21 of the first male mold 11 and the second convex portion 22 of the second male mold 12, each first convex portion 21 has each first convex portion 21. Between the first male mold 11 and the second male mold 12, and the male mold holding means 13 provided with the first male mold 11 and the second male mold 12 at a position between the two convex portions 22. And a base material setting means 14 for setting the sheet-like base material 30 on the base plate. Here, the first male mold 11 is a male mold that is embossed when embossing the base material 30 and embosses the side that becomes the surface when the packaging container 40 shown in FIG. 5 is formed from the base material 30. The opposite side is a second male mold 12.

  The first male mold 11 has a linear first protrusion as shown in each of the enlarged sectional view of FIG. 2A, the enlarged plan view of FIG. 2C, and the plan view of FIG. It has the parts 21a-21g (Hereafter, these are collectively called the 1st convex part 21 collectively.). The second male mold 12 includes linear second convex portions 22a to 22f (hereinafter referred to as these, as shown in the enlarged sectional view of FIG. 2A and the plan view of FIG. 3B). Are also simply referred to as second convex portions 22).

  In the first male mold 11, a plurality of linear first convex portions 21 are arranged substantially in parallel, and the width W1 of the first convex portions 21 is set smaller than the interval S1 between the first convex portions 21. The second male mold 12 has a plurality of linear second convex portions 22 arranged substantially in parallel, and the width W2 of the second convex portions 22 is the distance S2 between the second convex portions 22 and between the first convex portions. The interval S2 between the second convex portions is set to be smaller than the interval S1 and larger than the width W1 of the first convex portions. Since the first male mold 11 and the second male mold 12 have such convex portions 21 and 32, they are engaged with each other as shown in FIG. A linear recess 31 and a linear recess 32 are embossed on 30.

  Here, as shown in FIG. 2A, the widths W1 and W2 of the convex portions 21 and 22 of the male molds 11 and 12 indicate widths substantially perpendicular to the linear direction of the convex portions, and the heights H1 and H2 Indicates the height from the plane where the convex portions 21 and 22 are provided in the male molds 11 and 12 to the upper end, and the intervals S1 and S2 between the convex portions 21 and 22 are from end to end of the adjacent convex portions. Indicates distance.

  The dimensions of the first male mold 11 will be described in detail. Since the width W1 of the first convex portion 21 in the first male mold 11 corresponds to the width of the concave portion 31 of the base material 30, it is usually about 0.15 to 0.8 mm, preferably 0.2 to It is about 0.4 mm. The interval S1 between the first male molds 11 is usually about 0.5 to 1.2 mm, preferably about 0.7 to 1.0 mm. Since the height H1 of the first male mold 11 corresponds to the depth of the concave portion 31 of the base material 30, it is usually about 0.3 to 0.8 mm, preferably about 0.4 to 0.7 mm. It is said. These dimensions are appropriately set according to the size of the substrate to be used and the thickness of the substrate. The number of the first convex portions 21 of the first male mold 11 is usually about 3 to 15 depending on the degree of the corner curve in the container formed from the base material 30, and FIG. As shown in FIG. Each first convex portion 21 has substantially the same shape.

  Next, the dimensions of the second male mold 12 will be described in detail. Since the width W2 of the second convex portion 22 corresponds to the width of the concave portion 32 on the back surface of the base material 30, it is usually about 0.15 to 1.0 mm, preferably about 0.2 to 0.4 mm. Is done. The interval S2 between the second male molds 12 is usually about 0.5 to 1.2 mm, preferably about 0.7 to 1.0 mm. Since the height H2 of the second convex portion 22 corresponds to the depth of the concave portion 32 on the back surface of the base material 30, it is usually about 0.3 to 0.8 mm, preferably 0.4 to 0.7 mm. It is said to be about. These dimensions are also set as appropriate in accordance with the size of the base material used and the thickness of the base material as in the first male mold 11. In addition, although the number of the 2nd convex parts 22 in the 2nd male type | mold 12 is based on the grade of the curve of the corner in the container formed from the base material 30, it is about 3-15 normally, FIG. As shown in FIG. Each of the second convex portions 22 has substantially the same shape.

  The relationship between the first male mold 11 and the second male mold 12 will be described. It is preferable that the height H1 of the first convex portion 21 in the first male mold 11 and the height H2 of the second convex portion 22 in the second male mold 12 are substantially the same. Since the heights of the convex portions 21 and 22 are substantially the same, it becomes easy to form the emboss sharply and uniformly.

  Further, the width W1 of the first protrusion 21 in the first male mold 11 and the width W2 of the second protrusion 22 in the second male mold 12 are substantially the same, and the first protrusion in the first male mold 11 is the same. The interval S1 between the portions 21 and the interval S2 between the second convex portions 22 in the second male mold 12 are substantially the same, and the height H1 of the first convex portion 21 in the first male mold 11 and the second It is preferable that the height H2 of the second convex portion 22 in the male mold 12 is substantially the same. Since the first male mold 11 and the second male mold 12 have substantially the same width, interval, and height, recesses 31 and 32 having substantially the same shape are formed on both the front and back surfaces of the sheet-like substrate 30. The Therefore, the moldability when the base material 30 is curved is improved.

  The sum of the width W1 of the first convex portion 21 and the interval S1 between the first convex portions 21 in the first male mold 11 is the width W2 of the second convex portion 22 and the second convex portion in the second male mold 12. The first male mold 11 and the second male mold 12 can be engaged with each other in a well-balanced manner by making the same as the sum of the intervals S2 between the two.

  The number of the second convex portions 22 of the second male mold 12 is one less than the number of the first convex portions 21 of the first male mold 11, so that each first convex portion 21 and each second convex portion Since the portions 22 are firmly engaged with each other, and a smaller number of recesses 32 than the surface of the base material 30 are formed on the back surface of the base material 30, the base material 30 can be easily bent with the back surface inside.

  Note that the linear length L1 of the first convex portion 21 of the first male mold 11 shown in FIG. 2C depends on the shape of the base material 30 and the shape of the packaging container 40 produced from the base material 30. Although it is a thing and is not specifically limited, Usually, it is about 50-200 mm. Similarly, the length in the linear direction of the second convex portion 22 of the second male mold 12 (not shown) is not particularly limited, and is approximately the same as that of the first convex portion 21.

  Each male mold 11 and 12 has a first convex section 11 and a second convex section when the first convex section 21 of the first male mold 11 and the second convex section 22 of the second male mold 12 are engaged with each other. It is preferably designed so that a gap of at least the thickness of the base material 30 and the thickness of the base material 30 +1.0 mm or less is formed between the portion 21 and the portion 21. By designing the male molds 11 and 12 in this way, the formed emboss becomes difficult to break.

  1 and 2 (a) and 2 (b), both ends of the first male mold 11 and the second male mold 12 have different shapes and are just engaged with each other.

  The materials of the first male mold 11 and the second male mold 12 are not limited as long as they have a hardness suitable for embossing of the substrate 30 to be used, and the same kind of material may be used. Alternatively, different types of materials may be used. When materials having different hardnesses are used for the male dies 11 and 12, usually only one of the dies is deformed first and needs to be replaced, and the other dies can be used continuously. Excellent. For example, brass, magnesium, iron, aluminum, copper, duralumin or the like is used as the material of each of the male molds 11 and 12.

  The method for producing the first male mold 11 and the second male mold 12 is not particularly limited, but the first male mold 11 and the second male mold 12 are produced by cutting a material of such a material into a substantially rectangular parallelepiped and making it into a desired shape by engraving. When the corners of the first convex portion 21 in the first male mold 11 and the second convex portion 22 in the second male mold 12 are sharp, surface treatment such as sand blasting or corrosion treatment is performed on the corner. Etc., a rounded portion can be formed by cutting a corner. This can prevent the substrate 30 from being damaged by the corners of the convex portions when the substrate 30 is embossed.

  Further, the male mold holding means 13 in FIG. 1 fixes the first male mold 11, moves the second male mold 12 up and down as indicated by an arrow 17 in FIG. 1, and the male molds 11 and 12 mesh with each other. To hold. The male mold holding means 13 is engaged with the first male mold 11 and the second male mold 12 sandwiching the sheet-like base material 30 to change from the state shown in FIG. 2A to the state shown in FIG. 2B. Thus, the substrate 30 can be subjected to linear embossing. Note that the male mold holding means 13 may move both the first male mold 11 and the second male mold 12 up and down, or may move either one up and down.

  The base material installation means 14 in FIG. 1 is not particularly limited as long as at least the base material 30 is installed and can be embossed. However, the positioning member 141 or the like is provided so as to guide the base material 30 to a predetermined position. It may be provided. In addition, the base material installation means 14 may have a function that can move the base material 30.

  Next, conditions when embossing is performed by the embossing apparatus 10 will be described. The base material 30 is usually conveyed with the surface which becomes the surface (outside) when printed into a packaging container. This is for facilitating the alignment of the embossing position when the base material 30 is viewed from above. The pressure when embossing varies depending on the number of impositions and the shape, but is usually about 0.2 to 0.8 MN (meganewtons). Although the speed | rate which performs embossing is not specifically limited, Usually, it is about 2000-6000 sheets / hour. In addition, although the advancing direction of the base material 30 at this time is not specifically limited, it is productivity and quality stability to advance to the linear direction of the linear 1st convex part 21 and the linear 2nd convex part 22. It is preferable from the viewpoint.

  In the embossing apparatus 10 of the present invention having each means described above, the base material 30 cut into a predetermined shape or the uncut base material 30 is transported and fixed to the base material setting means 14, and the first Installed between the male mold 11 and the second male mold 12. Then, the first male mold 11 and the second male mold 12 held by the male mold holding means 13 are engaged with each other with the base material 30 interposed therebetween, and the base material 30 is embossed to obtain the first male mold. 11 and the second male mold 12 are returned to their original positions. Then, the embossed base material 30 is transported to an apparatus or the like that performs the next step, and the embossing base material 30 is transported and fixed to the base material setting means 14. By repeating such an operation, the plurality of base materials 30 are successively embossed.

  Such an embossing apparatus 10 may be provided as a part of the content filling machine of the packaging container 40, such as tobacco and confectionery. The embossing method of the present invention can be realized by the combination of the embossing apparatus 10 of the present invention described above and the embossing mold of the present invention.

The substrate 30 of the present invention is not particularly limited as long as it is a sheet, but a paper sheet is mainly used. Coated cardboard, card paper, ivory paper, or the like is used as the paper material for the substrate 30. The weighed value is about 190 to 400 g / m ² and the thickness is about 200 to 550 μm. As another material of the base material 30, a plastic material, processed paper, etc. can also be used. As the base material 30, a material such as a seed paper or the like on which a picture or a quality display of contents is printed is used. The base material 30 is usually a single sheet-like material.

  The shape of the recesses 31 and 32 formed in the base material 30 is not particularly limited because it depends on the shape of each male mold 11 and 12, but normally the width of the recess 31 by the first male mold 11 is the same as S2. About 0.5 to 1.2 mm, the depth of the concave portion 31 is the same as H2, and is about 0.3 to 0.8 mm. The width of the concave portion 32 by the second male mold 12 is the same as that of the above S1. About 5-1.2 mm and the depth of the recessed part 32 are the same as said H1, and are about 0.3-0.8 mm.

  As shown in FIG. 4, the sheet-like base material 30 is formed by arranging a plurality of linear recesses 31 substantially parallel to one surface by the above-described embossing method, and the linear recesses 32 are substantially parallel on the back surface thereof. Are arranged in a plurality. When embossing the sheet-like substrate 30 shown in FIG. 4, the first male mold 11 and the second male mold 12 as shown in FIGS. 3A and 3B are used. be able to.

  The embossed sheet-like base material 30 is folded at a predetermined position along a ruled line or the like provided elsewhere, and the predetermined position is attached to form the packaging container 40 shown in FIG. . In the following, as shown in FIGS. 4 and 5, the side having the bottom plate 35 with respect to the lower front plate 34 in the packaging container 40 (base material 30) is the lower side, and the lower front plate 34 is viewed in this state. The left side is the left side and the right side is the right side.

  Specifically, as shown in FIG. 4, the base material 30 includes a lower front plate 34, a bottom plate 35 connected to the lower front plate 34 via a ruled line a on the lower side, and a ruled line b on the bottom plate 35. A back plate 36 connected to the lower side via a ruled line c, an upper plate 37 connected to the lower side via a ruled line c, and an upper front connected to the upper plate 37 via a ruled line d. A face plate 38 and an opening piece 39 connected to the upper front plate 38 via a ruled line e on the lower side are provided. The lower front plate 34, the rear plate 36, and the upper front plate 38 are respectively provided with a lower front left piece 34a, a lower front right piece 34b, a rear left piece 36a, a rear right piece 36b, and an upper part through recesses 31 embossed on both sides. It has a front left piece 38a and an upper front right piece 38b. Among these, the back left piece 36a of the back plate 36 has an upper left flap 36c and a lower left flap 36d above and below, and the back right piece 36b of the back plate 36 has an upper right flap 36e and a lower right flap 36f above and below it. .

  Each ruled line a to d is folded in the base material 30, each concave portion 31 is bent along a straight line, the flaps 36c, 36d, 36e, and 36f are folded, the flaps 36c and 36e are bonded to the bottom plate 35, and the flaps 36d and 36f are formed. Is bonded to the upper surface plate 37. Then, the lower front left piece 34 a of the lower front plate 34 and the upper front left piece 38 a of the upper front plate 38 are bonded to the rear left piece 36 a of the rear plate 36, and the lower front plate 34 is attached to the rear right piece 36 b of the rear plate 36. The packaging container 40 shown in FIG. 5 is completed by bonding the lower front right side piece 34b and the upper front right side piece 38b of the upper front plate 38 and bonding the opening piece 39 to the upper side (outside) of the lower front plate 34. At this time, conventionally known adhesives are used for the above-described bonding.

  On the upper side of the lower front plate 34, a broken line-like substantially U-shaped cutting line 34d is provided, and an opening piece 39 is bonded to a portion surrounded by the cutting line 34d. Then, when the user opens the packaging container 40, the opening piece 39 is peeled off from the lower front plate 34, whereby the cutting line 34d is cut off, and the lower front plate 34 surrounded by the cutting line 34d is opened. It is easy to open the packaging container 40 while adhering to 39, and it can be seen at a glance whether or not the packaging container 40 has been opened once. Cutting lines 36g and 36h are provided on the rear right side piece 36a and the rear left side piece 36b of the rear plate 36 so that the piece 41 having the upper front plate 38 can be opened in the packaging container 40. When the packaging container 40 is opened, the ruled lines 36i that connect these cutting lines 36g and 36h are broken, and the user can take out the contents of the packaging container 40. Since the plurality of recesses 31 are bent with a curve, the bottom plate 35 and the top plate 37 are not rectangular but have rounded corners.

  As shown in FIG. 5, the packaging container 40 after assembling the base material 30 embossed by the above-mentioned method is generally a substantially rectangular parallelepiped shape, and a plurality of linearly embossed portions are curved. The predetermined position is bonded in the state. The ratio of each side when the packaging container 40 has a substantially rectangular parallelepiped shape is not particularly limited, and is appropriately set according to the application. Although the size of the packaging container 40 is not particularly limited, as shown in FIG. 5, if each side of the rectangular parallelepiped is L3, W3, and H3, the length L3 is usually about 10 to 100 mm, and the width W3: About 50 to 200 mm and height H3: about 50 to 200 mm. Moreover, when cigarette the contents of the packaging container 40, it is preferable that the size is about L3: about 15-25 mm, W3: about 50-60 mm, and H3: about 85-110 mm.

  The base material 30 embossed by the embossing method of the present invention can be widely used in a shape in which the embossed portions 31 and 32 are bent and the corners are curved, as shown in FIG. The container 40 is not limited to a substantially rectangular parallelepiped shape. Further, the embossed portions 31 and 32 may be used at one corner of the container, or may be used at four corners like the packaging container 40, and the number thereof is not particularly limited. By using the embossing apparatus 10 having the first male mold 11 and the second male mold 12 described above to perform a straight embossing process on the sheet-like substrate 30, the radius of curvature is about 3 to 10 mm. The packaging container 40 having a curved surface can be provided.

  The contents of the packaging container 40 are also not particularly limited, but are usually cigarettes, confectionery, foods, and the like. Especially, when a cigarette is put in the packaging container 40, the packaging container 40 can be formed along the contents when filling the cigarette. ,preferable.

(Example 1)
About the base material cut | disconnected so that it might become the shape of the top view shown in FIG. 4, it embossed with the embossing apparatus of this invention.

The substrate is ivory paper having a weighing value of 212 g / m ² and is subjected to offset printing.

  The first male mold has seven first convex portions, the width of the first convex portion is 0.34 mm, the height is 0.6 mm, and the interval between the first convex portions is 0.74 mm. Further, the second male mold has six second convex portions, the width of the second convex portion is 0.34 mm, the height is 0.6 mm, and the interval between the second convex portions is 0.74 mm. is there.

  Using these male molds, the substrate was embossed at a pressure of 0.5 MN to form a plurality of linear recesses on the substrate. Using this substrate, a box-shaped packaging container having a curved corner as shown in FIG.

(Example 2)
In the first male mold, the width of the first protrusions was 0.20 mm, the height was 0.5 mm, and the distance between the first protrusions was 0.86 mm. In the second male mold, the width of the second protrusions was 0.26 mm, the height was 0.5 mm, and the distance between the second protrusions was 0.80 mm. Otherwise, the packaging container of Example 2 was produced in the same manner as Example 1.

(Evaluation methods)
The torque value when producing the packaging container of each example was measured. Torque was measured with a torque measuring device (manufactured by Oriontec, model number: RTC-1210A) for samples cut to a width of 30 mm of each packaging container. The measurement results are shown in Table 1.

各実施例はトルクの値が低く、特に実施例１はよりトルクの値を低くすることができた。このことから、本発明の各実施例は、角を湾曲させた包装容器を形成しやすくするためのエンボス加工方法として有効であることが確認できた。

Each example had a low torque value, and in particular, Example 1 was able to make the torque value lower. From this, it has confirmed that each Example of this invention was effective as an embossing method for making it easy to form the packaging container which curved the corner | angular.

It is the schematic which shows the embossing apparatus of this invention. It is the enlarged side view and enlarged plan view which show the shaping | molding die for embossing of this invention. It is a top view which shows the shaping | molding die for embossing of this invention. It is an expanded view which shows the example of the sheet-like base material of this invention. It is a perspective view which shows the packaging container produced from the sheet-like base material of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Embossing apparatus 11 of sheet-like base material 11 1st male type | mold 12 2nd male type | mold 13 Male type | mold holding means 14 Base material installation means 21, 21a, 21b, 21c, 21d, 21e, 21f, 21g 1st convex part 22 22a, 22b, 22c, 22d, 22e, 22f Second convex part 30 Sheet-like base material 31, 32 Embossed part 40 of sheet-like base material Packaging container W1 Width of second convex part W2 of second convex part Width S1 Interval between first protrusions S2 Interval between second protrusions H1 Height of first protrusion H2 Height of second protrusion L1 Length of first protrusion W3 Horizontal length L3 of the packaging container Vertical length of packaging container H3 Height of packaging container

Claims (9)

An embossing device for embossing a sheet-like base material,
A first male mold in which a plurality of linear first convex portions are arranged substantially in parallel, and the width of the first convex portions is smaller than the interval between the first convex portions;
A plurality of linear second convex portions are arranged substantially in parallel, and the width of the second convex portions is smaller than the interval between the second convex portions and the interval between the first convex portions. A second male mold having an interval larger than the width of the first convex portion;
When the first convex portion of the first male mold and the second convex portion of the second male mold are engaged with each other, the first convex portions enter between the second convex portions. Male mold holding means provided with the first male mold and the second male mold at a position;
An embossing apparatus comprising: a base material setting unit configured to set the sheet-like base material between the first male mold and the second male mold. The embossing device according to claim 1,
An embossing apparatus, wherein a height of the first convex portion in the first male mold is substantially the same as a height of the second convex portion in the second male mold. The embossing device according to claim 1 or 2,
The width of the first convex portion in the first male mold is substantially the same as the width of the second convex portion in the second male mold,
An interval between the first convex portions in the first male mold and an interval between the second convex portions in the second male mold are substantially the same.
An embossing apparatus, wherein a height of the first convex portion in the first male mold is substantially the same as a height of the second convex portion in the second male mold. The embossing device according to any one of claims 1 to 3,
The number of the first protrusions in the first male mold is different from the number of the second protrusions in the second male mold,
In the male mold, the number of convex portions is one when the first convex portion of the first male mold and the second convex portion of the second male mold are engaged with each other. An embossing apparatus, wherein the first male mold and the second male mold are provided at a position where another male convex part is inserted between the convex parts. The embossing device according to any one of claims 1 to 4,
The embossing apparatus according to claim 1, wherein the first male mold and the second male mold are made of metal, and the first male mold and the second male mold have different hardnesses. An embossing device according to any one of claims 1 to 5,
An embossing apparatus, wherein rounded portions are formed at corners of tips of the first convex portion and the second convex portion. A first male mold in which a plurality of linear first convex portions are arranged substantially in parallel, and the width of the first convex portions is smaller than the interval between the first convex portions;
A plurality of linear second convex portions are arranged substantially in parallel, and the width of the second convex portions is smaller than the interval between the second convex portions and the interval between the first convex portions. A combination of embossing molds, wherein the second male mold has a gap larger than the width of the first convex portion. An embossing method for embossing a sheet-like substrate,
A first male mold in which a plurality of linear first convex portions are arranged substantially in parallel, and the width of the first convex portions is smaller than the interval between the first convex portions;
A plurality of linear second convex portions are arranged substantially in parallel, and the width of the second convex portions is smaller than the interval between the second convex portions and the interval between the first convex portions. A second male mold having an interval larger than the width of the first protrusion,
When the first convex portion of the first male mold and the second convex portion of the second male mold are engaged with each other, the first convex portions enter between the second convex portions. Providing the first male mold and the second male mold at a position;
Embossing is performed by placing the sheet-like base material between the first male mold and the second male mold and meshing the first male mold with the second male mold. The embossing method characterized by the above-mentioned. An embossed sheet-like base material,
A first male mold in which a plurality of linear first convex portions are arranged substantially in parallel, and the width of the first convex portions is smaller than the interval between the first convex portions;
A plurality of linear second convex portions are arranged substantially in parallel, and the width of the second convex portions is smaller than the interval between the second convex portions and the interval between the first convex portions. A second male mold having an interval larger than the width of the first protrusion,
When the first convex portion of the first male mold and the second convex portion of the second male mold are engaged with each other, the first convex portions enter between the second convex portions. Providing the first male mold and the second male mold at a position;
The sheet-like base material is placed between the first male mold and the second male mold, and is embossed by meshing the first male mold with the second male mold. A sheet-like substrate characterized by the above.

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