JP2016003013A - Paper container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper container having both of shape retention and tear easiness.SOLUTION: A paper container 10 includes a bottom plate 19 in which an edge winder 14 is formed on a whole circumference of an upper edge of a side wall 11 and which is connected to a lower part 13 of the side wall 11. The edge winder 14 is formed by half-rotary curling. Further, a tip of the winding edge 14 at a position substantially facing a pasted part 12 is provided with a notch N1. The notch N1 has a shape tapered in a direction separating from a tip 22 of the winding edge 14, and a tapered tip has an acute angle. Furthermore, a tear line C1 for tearing the side wall is connected to the notch N1.

Description

  The present invention relates to a paper container, and more particularly to a paper container in which an edge winding is formed around the entire upper edge of a side wall.

  In addition to cupcakes and the like, confectionery items stored in cup-shaped packaging containers are known. In manufacturing such confectionery, when the confectionery dough is poured into the packaging container and baked, the dough may adhere to the inside of the packaging container. In addition, the stored items may be stored in the packaging container with almost no gap. Therefore, when eating confectionery contained in a cup-shaped packaging container, it may be difficult to cleanly remove the contents from the packaging container.

  For this reason, it has been demanded that the barrel of the packaging container for storing the confectionery can be cut and opened so that the contents can be easily taken out.

  In response to such a demand, conventionally, it has been proposed to provide a horizontal tear line and a vertical tear line in the trunk part in order to tear the whole or the main part of the trunk part of the packaging container (Patent Document 1). .

JP 2014-43256 A

  In Patent Document 1, a notch is formed at the upper end of the trunk of the packaging container, and a hook that can lock the lid is formed on all or part of the upper end of the trunk excluding the notch. The structure to be disclosed is disclosed.

  However, in such a configuration, there is a portion where the collar portion is not formed at the upper end of the trunk portion, and thus there is a possibility that the shape retaining property cannot be sufficiently maintained.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a paper container that has both shape retention and ease of tearing.

  In order to achieve the above object, the invention according to claim 1 is a paper container in which an edge winding is formed on the entire upper edge of the side wall, and a part of the edge winding has a range in the winding direction of the edge winding. A deficient part is provided in a part of.

  With this configuration, there is no portion where no edge winding is formed at the upper edge of the side wall, while the side wall can be torn by using the defect.

  According to a second aspect of the present invention, in the configuration of the first aspect of the invention, the edge winding is formed by curling the front end portion of the side wall less than one turn, the defect portion is a notch, and the front end portion of the edge winding is formed. Is provided.

  If comprised in this way, since curling of edge winding is less than 1 rotation, the front-end | tip part of edge winding in which the notch was provided will be exposed outside.

  According to a third aspect of the present invention, in the configuration of the second aspect of the present invention, the notch has a tapered shape in a direction away from the front end portion of the edge winding.

  If comprised in this way, it will become easy to concentrate the force which tears a side wall to the location where the notch tapered.

  According to a fourth aspect of the present invention, in the configuration of the third aspect of the present invention, the tapered tip of the notch has an acute angle.

  If comprised in this way, it will become easy to concentrate the force which tears a side wall on the tapering front-end | tip of a notch.

  According to a fifth aspect of the present invention, in the configuration of the invention according to any of the second to fourth aspects, the edge winding is formed by curling the tip of the side wall half a turn.

  If comprised in this way, the starting position of the edge winding in a side wall and the front-end | tip part of an edge winding will space apart.

  According to a sixth aspect of the present invention, in the configuration of the first aspect of the present invention, the defect portion is an opening.

  If comprised in this way, a defect | deletion part can be provided in a location different from the front-end | tip part of an edge winding.

  According to a seventh aspect of the invention, in the configuration of the sixth aspect of the invention, the opening has a tapered shape in a direction toward the edge winding start position on the side wall.

  If comprised in this way, it will become easy to concentrate the force which tears a side wall to the location where the opening tapered.

  According to an eighth aspect of the invention, in the configuration of the seventh aspect of the invention, the tapered tip of the opening has an acute angle.

  If comprised in this way, it will become easy to concentrate the force which tears a side wall on the tapering front-end | tip of opening.

  According to a ninth aspect of the present invention, in the configuration of the eighth aspect of the invention, the opening is tapered in a direction away from the start position of the edge winding on the side wall, and the tip has an acute angle.

  If comprised in this way, it will become easy to concentrate the force which tears an edge winding on the front-end | tip tapered in the direction away from the starting position of an edge winding.

  According to a tenth aspect of the present invention, in the configuration of the invention according to any of the first to ninth aspects, a tear line for tearing the side wall is connected to the side wall side of the defect portion.

  If comprised in this way, a side wall can be torn in the direction which goes to the lower part of a paper container from the tear line connected to a defect | deletion part.

  As described above, according to the first aspect of the present invention, since there is no portion where no edge winding is formed at the upper end of the side wall, the side wall can be torn from the defective portion, so that it is easy to tear while ensuring shape retention. The effect is obtained.

  In addition to the effect of the invention of claim 1, the invention of claim 2 makes it easier to put a finger or the like on the notch because the tip of the edge winding provided with the notch is exposed to the outside. A tear can be easily made from the notch at the tip of the edge winding to the side wall from the edge winding.

  In addition to the effect of the invention described in claim 2, the force of tearing the side wall tends to concentrate on the tapered portion, so that the side wall can be easily torn.

  In the invention described in claim 4, in addition to the effect of the invention described in claim 3, since the force for tearing the side wall is more likely to concentrate on the tapered tip of the notch, it becomes easier to tear the side wall.

  In the invention according to claim 5, in addition to the effect of the invention according to any one of claims 2 to 4, the edge winding start position on the side wall is separated from the tip of the edge winding. It becomes easy to put a finger on the tip, and it is easy to tear the side wall from the notch provided at the tip of the edge winding.

  According to the sixth aspect of the invention, in addition to the effect of the first aspect of the invention, the defect portion can be provided at a location different from the front end portion of the edge winding, so that the strength of the front end portion of the edge winding can be maintained.

  In addition to the effect of the invention of claim 6, the invention of claim 7 is easy to tear in the direction toward the start position of the edge winding because the force of tearing the side wall tends to concentrate on the tapered portion of the opening. Become.

  In the invention described in claim 8, in addition to the effect of the invention described in claim 7, the force for tearing the side wall is more likely to concentrate on the tapered tip of the opening, so that the side wall is further easily torn.

  In addition to the effect of the invention described in claim 8, the invention described in claim 9 tends to concentrate the force for tearing the edge winding at the tip tapered in the direction away from the start position of the edge winding, When tearing, the tip of the edge winding is easily torn together.

  According to the tenth aspect of the invention, in addition to the effect of the first aspect of the invention, the side wall can be torn along the tear line, so that the inclusions in the paper container can be more easily taken out.

It is the perspective view which showed the external appearance shape of the paper container by 1st Embodiment of this invention. It is a top view of the side wall base paper and bottom board base paper for manufacturing the paper container shown in FIG. FIG. 3 is an enlarged schematic view of an “X11” portion of the side wall base paper shown in FIG. 2. FIG. 2 is an enlarged schematic view of an “X12” portion of the edge winding shown in FIG. 1. It is a front view when the paper container shown in FIG. It is an expanded sectional view of the VI-VI line shown in FIG. FIG. 7 is an enlarged schematic view of a part of a side wall base paper for manufacturing a paper container according to a second embodiment of the present invention, and shows a portion corresponding to the “X11” portion of the side wall base paper shown in FIG. 2. is there. FIG. 6 is a front view of a paper container formed from a side wall base paper and a bottom plate base paper including the portion shown in FIG. 7, corresponding to FIG. 5. It is an expanded sectional view of the IX-IX line shown in FIG. It is a front view of the paper container by 3rd Embodiment of this invention, Comprising: It is a figure equivalent to FIG. It is an expanded sectional view of the XI-XI line shown in FIG. FIG. 10 is an enlarged schematic view of a paper material for manufacturing a paper container according to a fourth embodiment of the present invention, and is a view showing a portion corresponding to the “X11” portion of the side wall base paper shown in FIG. 2. It is a front view of the paper container by 5th Embodiment of this invention, Comprising: It is a figure equivalent to FIG. FIG. 10 is an enlarged schematic view of a paper material for manufacturing a paper container according to a sixth embodiment of the present invention, and is a diagram showing a portion corresponding to the “X11” portion of the side wall base paper shown in FIG. 2. It is a front view of the paper container formed from the side wall base paper and the baseboard base paper containing the part shown in FIG. 14, Comprising: It is a figure equivalent to FIG. It is the perspective view which showed the external appearance shape of the paper container by 7th Embodiment of this invention.

  FIG. 1 is a perspective view showing an external shape of a paper container according to a first embodiment of the present invention, and FIG. 2 is a plan view of a paper material for manufacturing the paper container shown in FIG. 3 is an enlarged schematic view of the “X11” portion of the side wall base paper shown in FIG.

  First, referring to FIG. 1, a paper container 10 includes an inverted frustoconical side wall 11 in which an edge winding 14 is formed around the entire upper edge, and a circular bottom plate 19 connected at a lower portion 13 of the side wall 11. Prepare.

  The side wall 11 has a bonding portion 12 formed by bonding a side wall base paper, which will be described later. In order to use the side wall 11 as a starting point for tearing the side wall 11 at a position substantially opposite to the bonding portion 12. In addition, a notch N1 as a missing part in which a part of the edge winding 14 is missing and a tear line C1 connected to the notch N1 are provided. A specific configuration of the paper container 10 will be described later.

  Next, with reference to FIG.2 and FIG.3, the paper material 1 for manufacturing the paper container 10 is demonstrated. The paper material 1 is composed of a side wall base paper 2 corresponding to the side wall 11 of the paper container 10 and a bottom plate base paper 9 corresponding to the bottom plate 19 of the paper container 10.

The side wall base paper 2 is formed by punching out a sheet material having a thickness of 0.2 to 0.5 mm obtained by laminating a synthetic resin film on the surface of a thick paper having a basis weight of 170 to 500 g / m ² . A 30 μm thick film made of polyethylene terephthalate (PET) is extrusion laminated on both sides of the cardboard. In addition, as a synthetic resin film to be laminated on the surface of cardboard, a film such as polyethylene (PE), polypropylene (PP), polybutylene terephthalate (PBT) is used depending on the requirements such as heat resistance of the paper container. Can be adopted. Moreover, you may employ | adopt the film of a separate raw material for the surface used as the side wall inner surface side, and the surface used as the side wall outer surface side.

  The side wall base paper 2 has opposite side edges 4a and 4b. When the paper container 10 described later is formed, the side wall base paper 2 is rolled into a cylindrical shape, and the side edges 4a and 4b are integrated to form a paper container. Ten side walls 11 are formed.

  Further, the side wall base paper 2 is provided with a lower end portion 5 for bonding to the bottom base paper 9 at the lower edge, and an edge winding 14 is formed at the upper edge of the side edge 11 of the paper container 10 at the upper edge. An edge winding margin 3 is provided for this purpose.

  The side wall paper 2 is provided with a notch N1 at the center of the upper edge. The notch N1 has a tapered shape in a direction away from the upper edge, and the tapered tip has an acute angle G. In addition, a tear line C1 constituted by a perforation or the like is provided from the tapered tip of the notch N1 to the front of the lower end portion 5 in a direction perpendicular to the upper edge and toward the lower edge.

  Further, the bottom plate base paper 9 corresponding to the bottom plate 19 of the paper container 10 is formed by punching out a sheet material having the same configuration as that of the side wall base paper 2.

  The paper container 10 shown in FIG. 1 is formed from the paper material 1 through the following steps, for example.

  (1) First, a margin part for bonding to the lower end part 5 of the side wall base paper 2 is formed by drawing the peripheral edge of the base plate base paper 9 punched out circularly from the roll paper.

  (2) The heated side wall base paper 2 is rolled and the side edges 4a and 4b are bonded together so as to follow the outer edge of the bottom plate base paper 9, thereby forming an inverted frustoconical shape. The side surface of the inverted truncated cone shape becomes the side wall 11 of the paper container 10 when completed.

  (3) A pressing member is pressed from the outside to the side edges 4a and 4b of the bonded side wall base paper 2 to form an adhesive seal, thereby forming a portion that becomes the bonding portion 12 of the paper container 10 when completed.

  (4) After heating the lower end 5 of the side wall base paper 2, it is folded inward to wrap around the margin of the bottom base paper 9 formed in (1), and the lower end 5 of the side wall base paper 2 to the margin of the base base paper 9. Adhere. Thereby, the lower part 13 and the bottom plate 19 of the paper container 10 as shown in the partial sectional view of FIG. 5 described later are formed.

  (5) Finally, the edge winding forming margin 3 of the side wall base paper 2 is subjected to molding slip processing to curl the edge winding forming margin 3 outward, and the edge winding 14 is formed on the upper edge of the side wall 11 to form a paper container. 10 molding steps are completed.

  4 is an enlarged schematic view of the “X12” portion of the edge winding shown in FIG. 1, FIG. 5 is a front view when the paper container shown in FIG. 1 is viewed in the direction of arrow A, and FIG. FIG. 6 is an enlarged sectional view taken along the line VI-VI shown in FIG. 5.

  First, the configuration of the paper container 10 will be described more specifically with reference to FIG. 4. The notch N1 is provided at the front end portion 22 of the edge winding 14 and away from the front end portion 22 of the edge winding 14. It has a tapered shape, and the tapered tip has an acute angle. Further, a tear line C1 for tearing the side wall is connected to the tapered tip of the notch N1. The tear line C1 extends from the connection point with the notch N1 to the upper end 21 along the curvature of the edge winding 14 in the center direction of the circle formed by the upper edge of the side wall 11, and is turned back from the upper end 21. Furthermore, it extends toward the lower side of the side wall 11.

  Referring to FIG. 5, the tear line C <b> 1 is provided on the side wall 11 so as to extend in the vertical direction when the paper container 10 is viewed from the front, and from the tapered tip of the notch N <b> 1 provided in the edge winding 14. It reaches the lower end of the lower portion 13 of the side wall 11.

  Therefore, the side wall 11 can be torn from the notch N1 along the tear line C1 through the upper end portion 21 of the edge winding 14 toward the lower portion of the side wall 11 of the paper container 10.

  Further, the edge winding 14 is formed by half-rotating curling of the upper edge (tip portion) of the side wall 11 as shown in the partial sectional view of FIG. 5 or FIG. 6A.

  Specifically, referring to (a) of FIG. 6, the reference lines op, oq, or, os are respectively the start positions of the edge windings 14 on the side walls 11 (in other words, the side walls 11 and the edge windings 14 This is a reference indicating the center angle when the degree of curling from the connection portion 24 to the tip 22 is represented by an arc B. The reference lines op, oq, or, and os indicate the references at which the central angles of the arc B are 0 ° (360 °), 90 °, 180 °, and 270 °, respectively. The point p corresponds to the start position 24 of the edge winding 14, and the point q corresponds to the upper end portion 21 of the edge winding 14.

  The sectional view taken along the line VI-VI of the edge winding 14 shown in FIG. In other words, the edge winding 14 is curled 180 degrees (half rotation) from the reference line op to or, and the VI-VI sectional view is increased from the starting position 24 of the edge winding 14 to the tip end portion 22 via the upper end 21. The convex semicircle.

  However, when providing the notch N1 in the front-end | tip part 22 of the edge winding 14, it is not restricted to this, As shown to (b)-(d) of FIG. 6, the grade of the edge winding 14 is less than 1 rotation. It can be arbitrarily performed between 90 ° and less than 360 °.

  Specifically, as shown in (b), curling may be performed between 180 ° and 270 ° (between the reference line ro-os) exceeding half a rotation. Further, as shown in (c), curling may be performed between more than 270 ° and less than 360 ° (between the reference line so-op). In (c), approximately 360 ° curling (approximately one rotation) is performed. In addition, since the edge winding 14 has a thickness, in (c), the sectional view of the edge winding 14 is not an arc, but in this case, a reference is made to a line connecting the edge winding 22 and the point o. It is sufficient to determine the central angle. Further, as shown in (d), curling may be performed between 90 ° and 180 ° (between the reference line qo-or). In (d), curling is performed slightly exceeding 90 °.

  Returning to FIG. 1, if configured as described above, there is no portion where the edge winding 14 is not formed at the upper edge of the side wall 11, but the side wall 11 can be torn by using the notch N1. It is easy to tear while securing the property.

  Further, since the curling of the edge winding 14 is a half rotation, the front end portion 22 of the edge winding 14 provided with the notch N1 is exposed to the outside, and the start position 24 of the edge winding 14 on the side wall 11 and the edge winding 14 The distal end portion 22 of the first electrode 22 is separated. For this reason, it becomes easy to put a finger or the like on the notch N1, whereby a tear can be easily made from the notch N1 of the front end portion 22 of the edge winding 14 to the side wall 11 from the edge winding 14.

  The notch N1 has a tapered shape in a direction away from the tip portion 22 of the edge winding 14, and the tip of the notch N1 has an acute angle.

  For this reason, the force to tear the side wall 11 is more likely to concentrate on the tapered tip of the notch N1, thereby making it easier to tear the side wall 11.

  Moreover, since the tear line C1 for tearing the side wall 11 is connected to the side wall 11 side of the notch N1, the side wall 11 can be easily torn toward the lower portion 13 of the paper container 10.

  Moreover, since the bottom plate 19 is provided, the side wall 11 can be torn in a state where it is left stationary.

  FIG. 7 is an enlarged schematic view of a side wall base paper for manufacturing a paper container according to the second embodiment of the present invention, and shows a portion corresponding to the “X11” portion of the side wall base paper shown in FIG. FIG. 8 is a front view of a paper container formed from the side wall base paper and the bottom plate base paper including the portion shown in FIG. 7, and corresponds to FIG. 5, and FIG. 9 is shown in FIG. It is an expanded sectional view of a IX-IX line.

  Since the description is basically the same as that according to the first embodiment, the difference will be mainly described.

  First, referring to FIG. 7, in the side wall base paper 2 (see FIG. 2) for manufacturing the paper container according to this embodiment, an opening N <b> 2 serving as a starting point for tearing the side wall 11 is formed. When the paper container 10 is formed, it is formed on the TT line which is a position corresponding to the upper end portion 21 (see FIG. 4) of the edge winding 14. Further, the tear line as described in the first embodiment is omitted.

  In addition, the partial opening N21 on the lower edge side of the side wall base paper 2 with the TT line as a boundary in the opening N2 has a tapered shape that tapers in the direction toward the lower edge, and the tapered tip is defined as an acute angle G1. Yes. Further, the partial opening N22 on the upper edge side of the side wall base paper 2 with the TT line as a boundary in the opening N2 also has a tapered shape that tapers in a direction toward the upper edge, and the tapered tip has an acute angle G2.

  As described above, in the portion of the side wall base paper 2 shown in FIG. 7, the opening N2 is formed on the TT line that is a position corresponding to the upper end portion 21 of the edge winding 14 when the paper container 10 is formed. Therefore, when the paper container 10 is formed from the side wall base paper 2 and the bottom board base paper 9 including the portion shown in FIG. 7, an opening N2 is provided in the upper end portion 21 of the edge winding 14 as shown in FIGS. It becomes the composition.

  If comprised in this way, since the opening N2 is provided in the location different from the front-end | tip part 22 of the edge winding 14, the intensity | strength of the front-end | tip part 22 of the edge winding 14 can be maintained.

  Further, the opening N2 is tapered in a direction toward the start position 24 of the edge winding 14 on the side wall 11 and a direction away from the start position 24 of the edge winding on the side wall 11 and a partial opening N21 having a tip having an acute angle G1. And a partial opening N22 whose tip is an acute angle G2.

  For this reason, the force of tearing the side wall 11 is more likely to concentrate on the tapered tips of the partial openings N21 and N22, thereby making it easier to tear the side wall 11 and the edge winding 14.

  FIG. 10 is a front view of a paper container according to a third embodiment of the present invention, which corresponds to FIG. 5, and FIG. 11 is an enlarged cross-sectional view taken along line XI-XI shown in FIG. is there.

  Since the description is basically the same as that according to the second embodiment, the difference will be mainly described.

  First, referring to FIG. 10, in the paper container 10 according to this embodiment, the edge winding 14 is formed by curling one or more times, and the opening N3 is formed from the start position 24 of the edge winding 14 on the side wall 11. Further, the edge winding 14 is provided in the horizontal direction so as not to be triple or more.

  Specifically, referring to FIG. 11, the opening N <b> 3 of the edge winding 14 opens downward from the start position 24 (that is, the p-o-r line) of the edge winding 14 on the side wall 11.

  In this way, when the opening N3 is provided in the edge winding 14, the edge winding 14 may be formed by curling one or more times, thereby further improving the shape retaining property of the edge winding 14, while horizontally extending. It is possible to tear the side wall 11 as easily as possible from the opening N3 provided so that the edge winding 14 is not triple or more.

  FIG. 12 is an enlarged schematic view of the side wall base paper for manufacturing the paper container according to the fourth embodiment of the present invention, and shows a portion corresponding to the “X11” portion of the side wall base paper shown in FIG. It is.

  Since the description is basically the same as that according to the second embodiment, the difference will be mainly described.

  First, referring to FIG. 12, in the side wall base paper 2 (see FIG. 2) for manufacturing the paper container according to this embodiment, the upper end 21 of the edge winding 14 is formed when the paper container 10 is formed. An opening N4 is provided only on the lower edge side of the side wall base paper 2 with the TT line corresponding to (refer to FIG. 4) as a boundary. The opening N4 has a tapered shape that tapers in a direction toward the lower edge of the side wall base paper 2, and the tip of the taper has an acute angle, like the opening N21 in the second embodiment.

  Thus, when the paper container 10 is formed from the side wall base paper 2 and the bottom plate base paper 9 including the portion as shown in FIG. 12, the ease of tearing the side wall 11 can be maintained to some extent. Moreover, since the opening is small compared to the second embodiment, the strength of the edge winding 14 can be improved.

  FIG. 13 is a front view of a paper container according to the fifth embodiment of the present invention and corresponds to the view shown in FIG. 5 of the first embodiment.

  Since the description is basically the same as that according to the first embodiment, the difference will be mainly described.

  Referring to the drawing, in the paper container 10 according to this embodiment, the notch N5 provided at the front end portion 22 of the edge winding 14 has a substantially arc shape that is convex upward in a front view.

  That is, the notch N5 has a tapered shape in a direction away from the tip portion 22 of the edge winding 14, but unlike the notch N1 in the first embodiment, the tip of the taper is not an acute angle. .

  Thus, the shape of the notch N5 is not particularly limited, and may be a substantially arc shape. If it has a tapered shape in a direction away from the front end portion 22 of the edge winding 14, the force to tear the side wall 11 tends to concentrate on the point where the notch N5 is tapered, so that the side wall 11 can be torn. It becomes easy.

  FIG. 14 is an enlarged schematic view of the side wall base paper for manufacturing the paper container according to the sixth embodiment of the present invention, and shows a portion corresponding to the “X11” portion of the side wall base paper shown in FIG. FIG. 15 is a front view of a paper container formed from the side wall base paper and the bottom board base paper including the portion shown in FIG. 14, and corresponds to FIG.

  Since the description is basically the same as that according to the second embodiment, the difference will be mainly described.

  First, referring to FIG. 14, in the side wall base paper 2 (see FIG. 2) for manufacturing the paper container according to this embodiment, the upper end 21 of the edge winding 14 is formed when the paper container 10 is formed. An opening N6 is provided at the position of the TT line corresponding to (refer to FIG. 4). The opening N6 has a substantially elliptical shape with the winding direction of the edge winding 14 as the longitudinal direction. In other words, it can be said that the taper has a tapered shape in each of the direction toward the upper edge and the direction toward the lower edge with the TT line as a boundary.

  In this way, in the portion of the side wall base paper 2 shown in FIG. 14, the opening N6 is formed at the position of the TT line that is the position corresponding to the upper end portion 21 of the edge winding 14 when the paper container 10 is formed. Therefore, when the paper container 10 is formed from the side wall base paper 2 and the bottom base paper 9 including the portion as shown in FIG. 14, an opening N6 is provided in the upper end portion 21 of the edge winding 14 as shown in FIG. It becomes composition.

  Thus, the shape of the opening N6 is not particularly limited, and may be a substantially elliptical shape. If the opening N6 has a tapered shape in the direction toward the start position of the edge winding 14 in the side wall 11, the force for tearing the side wall 11 tends to concentrate on the point where the opening N6 is tapered in the direction. Therefore, it becomes easy to tear the side wall 11.

  Further, the opening N6 may have a tapered shape in a direction away from the start position of the edge winding 14 in the side wall 11. Since the force for tearing the edge winding 14 is easily concentrated at the point where the opening N6 is tapered in the direction, it is easy to tear the edge winding 14.

  FIG. 16 is a perspective view of a paper container according to the seventh embodiment of the present invention.

  Since the description is basically the same as that according to the first embodiment, the difference will be mainly described.

  Referring to the drawing, in the paper container 10 according to this embodiment, first, the side wall 11 forms an inverted conical barrel. Thus, the paper container 10 may not have the bottom plate 19 as described in the first embodiment.

  A tear line C7 is connected to the notch N7. The tear line C7 extends from the connection point with the notch N7 toward the upper end 21 along the curvature of the edge winding 14 in the direction of the center of the bottom circle of the cone formed by the side wall 11, and is folded back from the upper end 21. Furthermore, it inclines with respect to the up-down direction of the side wall 11, and is extended to the middle of the trunk | drum. In addition, the tear line C7 extends further in the horizontal direction from the middle of the trunk.

  If comprised in this way, the height to tear can be adjusted according to a use.

  Note that the specific shapes of the notches and the openings described in the above embodiments are merely examples, and are not limited to those described above. Since the shape of the notch and the opening is a starting point for tearing the side wall 11, any shape can be adopted as long as the shape functions as a missing portion in which a part of the edge winding is missing. In the first, fifth, and seventh embodiments, the notch has a tapered shape in a direction away from the front end of the edge winding, and the second, third, fourth, and second In the sixth embodiment, the taper has a tapered shape in the direction toward the edge winding start position on the side wall or in the direction away from the edge winding start position, but is not limited thereto. The notch or opening may be shaped like a slit.

  In each of the above embodiments, the taper direction of the notch or opening is parallel to the winding direction of the edge winding 14, but the taper direction of the notch or opening is in the winding direction of the edge winding 14. The direction may also be inclined.

  Furthermore, the notch or opening as a defect | deletion part should just be provided in a part of circumferential direction of the edge winding 14. FIG.

  Furthermore, in each of the above-described embodiments, the notch or the opening is provided at a position substantially opposite to the bonding portion 12, but the present invention is not limited to this, and the notch or the opening is an arbitrary position on the side wall 11, for example, It can be provided in the vicinity of the bonding part 12.

  Further, in each of the above-described embodiments, the notch or opening is provided in the margin 3 of the side wall base paper 2 where the edge winding 14 is formed. However, the present invention is not limited to this. A notch or opening may be provided.

  Furthermore, in the second, third, fourth, and sixth embodiments, the configuration in which the opening is provided near the upper end of the edge winding 14 has been described, but the present invention is not limited to this. It suffices if an opening as a missing portion is provided in a part of the range in the winding direction of the edge winding 14.

  Further, in each of the above-described embodiments, the notch or opening as the missing portion is provided at one place, but it may be provided at two or more places within the range of the winding direction of the edge winding 14. For example, a notch may be provided in the front end portion 22 of the edge winding and an opening may be provided in the upper end portion 21 of the edge winding. Further, an opening may be provided at the upper end portion 21 of the edge winding, and another opening may be provided at a position closer to the tip portion 22 or closer to the start position 24 than the upper end portion 21 of the edge winding.

  Furthermore, in each of the above-described embodiments, it has been described that the tear line is a perforation or the like, but the tear line is formed by half-cutting, a notch composed of a base line part and an auxiliary line part, or pressing a base paper. What is necessary is just to assist tearing functionally, such as a hollow provided. The perforation or half-cut configuration of the tear line may be appropriately determined according to the material, thickness, and the like of the side wall 11.

  Further, in the first, fifth, and seventh embodiments, the edge winding 14 is formed by half-turn curling, but this is not a limitation, and the end of the side wall 11 is curled less than one turn. It only has to be formed.

  Furthermore, the tear line is provided only in the first and seventh embodiments, but in other embodiments, a tear line connected to a notch or opening as a defect portion may be provided. Is possible. It is also possible to adopt a configuration in which the leader line is omitted in the first and seventh embodiments. Further, the shape of the tear line is also arbitrary, and the tear line may be configured to be provided from the missing part to the middle of the side wall 11. The tear line may be bent or curved in the horizontal direction in the middle of the side wall 11. Further, the tear line may be constituted by a curved line in the side wall 11.

  Further, in the seventh embodiment, it has been described that the tear line C7 is curved in the horizontal direction in the middle of the trunk portion, but the present invention is not limited to this. The tear line C7 may be a straight line extending from the upper end portion 21 toward the apex of the cone formed by the body portion.

  Furthermore, in each of the above-described embodiments, the side wall 11 has an inverted truncated cone shape or an inverted cone shape. However, the present invention is not limited to this, and an arbitrary shape can be adopted. For example, the side wall 11 may be configured such that the shape of the upper edge of the side wall 11 when viewed in plan is a rounded square or a rounded rectangle.

  Furthermore, in the first to sixth embodiments, since the side wall 11 is formed from the fan-shaped side wall base paper 2, the side wall 11 is an inclined surface tapered toward the lower portion 13, but is not limited thereto. The opposing side walls 11 may be parallel.

  Further, in the first embodiment, the paper container 10 is configured from the side wall base paper 2 and the bottom plate base paper 19, but the present invention is not limited to this, and the paper container 10 may be a press-integrated type. .

DESCRIPTION OF SYMBOLS 10 ... Paper container 11 ... Side wall 12 ... Pasting part 13 ... Lower part 14 ... Edge winding 19 ... Bottom plate 21 ... Upper end part 22 ... Tip part 24 ... Starting position C1, C7 ... Tear line N1, N5, N7 ... Notch N2, N3, N4, N6... Opening In addition, the same code | symbol in each figure shows the same or equivalent part.

Claims (10)

A paper container in which an edge winding is formed on the entire upper edge of the side wall,
A paper container in which a defective portion is provided in a part of a range in a winding direction of the edge winding in a part of the edge winding. The edge winding is formed by curling the tip of the side wall for less than one rotation,
The paper container according to claim 1, wherein the defect portion is a notch and is provided at a tip portion of the edge winding.   The paper container according to claim 2, wherein the notch has a tapered shape in a direction away from a tip portion of the edge winding.   The paper container according to claim 3, wherein a tapered tip of the notch has an acute angle.   The paper container according to any one of claims 2 to 4, wherein the edge winding is formed by curling the tip of the side wall half a turn.   The paper container according to claim 1, wherein the defect portion is an opening.   The paper container according to claim 6, wherein the opening has a tapered shape in a direction toward a start position of the edge winding on the side wall.   The paper container according to claim 7, wherein the tapered tip of the opening has an acute angle.   The paper container according to claim 8, wherein the opening is tapered in a direction away from a start position of the edge winding on the side wall and has a sharp tip.   The paper container in any one of Claim 1 to 9 with which the tear line for tearing the said side wall is connected to the said side wall side of the said defect | deletion part.

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