JP5763374B2 - Flange paper container blank and flanged paper container - Google Patents

Description

  The present invention is a paper container used for packaging frozen foods, powders, etc., and to obtain a flanged paper container having a flange integrally on the outer periphery of an opening so that a cover plate can be attached. And a flanged paper container assembled from the blank.

  Conventionally, there is a tray-like flanged paper container having a top surface opening from a single blank having a shape as disclosed in Patent Document 1, and this is covered with a paper cover plate and the periphery of the cover plate. By heat-sealing the flange, it is used for packaging frozen foods and the like.

  As shown in FIG. 5, the blank plate capable of assembling the flanged paper container has a side plate 12 connected to two opposite sides of a square bottom plate 11 via a mountain fold line. Edge pieces 13 are connected to the outer side opposite to the bottom plate 11 via valley fold lines, and the left and right ends of the edge pieces 13 (ends facing the length direction of the edge pieces) Tongue pieces 131 each extending in the lateral direction (length direction of the edge piece) are provided. The left and right side sides (sides facing the width direction of the side plate) of the side plate 12 are respectively connected to a folded joining plate 121 having an inverted triangular shape via a mountain fold line, and the bottom plate 11 of the folded joining plate 121 is connected. A joining edge piece 122 is connected to the outer side opposite to the bottom via a valley fold line, and this joining edge piece 122 forms the same plane as the tongue piece 131 through a notch. (See FIG. 6).

  The incision end of the incision that separates the joining edge piece 122 and the tongue piece 131 is a first set point A (a set of fold lines on the side of the side plate 12 and valley fold lines on the outer side of the side plate 12. The valley fold line on the outer side of the fold-in joining plate 121 also reaches the blank so as to gather at the first gathering point A), and the tongue piece 131 will be described later by this incision. In addition, the joint edge piece 122 and the folded joint plate 121 are separated from each other during box making.

  In addition, the second side plate 14 is connected to the other two opposite sides of the bottom plate 11 via a mountain fold line, and the second side plate 14 has an outer side opposite to the bottom plate 11. The second edge piece 15 is connected via a valley fold line, and the left and right ends of the second edge piece 15 (ends facing the longitudinal direction of the second edge piece) are respectively lateral (second edge). A second tongue piece 151 extending in the longitudinal direction of the piece is provided. The left and right side edges (sides facing the width direction of the second side face plate) of the second side face plate 14 are connected to an inverted triangular second folding joining plate 141 via a valley fold line, respectively.

  Further, with respect to the fold joint plate 121 and the second fold joint plate 141 located between the adjacent side plate 12 and the second side plate 14, the side of the fold joint plate 121 opposite to the side plate 12. And the side of the second folded joint plate 141 opposite to the second side plate 14 are connected via a mountain fold line. Further, a small protrusion 152 protruding toward the second folding joint plate 141 is provided at an edge of the second tongue piece 151 in the vicinity where the second folding joint plate 141 comes into contact. The two-fold joint plate 141 forms the same plane through a cut.

  The cut between the small protrusion 152 and the second folding joining plate 141 is performed by the small protrusion 152 at the first set point A on the tongue piece 131 side (the cut end of the tongue piece 131 is positioned). In order to form a shape that can cover the first set point A corresponding to the location of the second side plate 14 and the outer side valley fold line of the second side plate 14, Is closer to the bottom plate 11 side than the second set point B formed by gathering, and the cut end reaches the portion bent at the valley fold line on the side of the second side plate 14 (see FIG. 6). ).

  In order to obtain a paper container with a flange from the blank, the side plate 12 and the second side plate 14 are folded to form a tray, and the folding joint plate 121 and the second folding joint plate 141 are the folding joint plate 121 and the second folding plate 121. The inner surfaces are bonded to each other by folding the mountain at the position of the mountain fold line between the folded joint plate 141. Next, in a state where the folding and joining plate 121 and the second folding and joining plate 141 are overlapped by the adhesion, the second side and side plates 14 are arranged so that the second folding and joining plate 141 faces the outer surface of the second side and side plate 14. The edge piece 13, the second edge piece 15, and the joining edge piece 122 are each folded into a valley, and the joined folded joining plate 121 and the second folded joining plate 141 are overlapped on the second side plate 14. By matching, the upper surface of the joining edge piece 122 and the lower surface of the second edge piece 15 face each other, the upper surface of the joining edge piece 122 and the lower surface of the second edge piece 15 are bonded, and the side plate 12 and the second side plate 14 are bent so that the sides are aligned with each other, the upper surface of the tongue piece 131 and the lower surface of the second tongue piece 151 are opposed to each other. The bottom surface of the bilingual piece 151 and Have adhered, the upper surface in this way are assembled is a tray-shaped paper containers with opening (see FIGS. 7 and 8).

  In the boxed paper container, the bottom plate 11, the four side plates 12, and the second side plate 14 are each formed with an accommodating portion having an upper opening with an upper surface as an opening, and around the opening. The outer edge of the side plate 12 and the edge piece 13 and the second edge piece 15 that are valley-folded from the outer side of the second side face plate 14 are positioned, and the second edge is formed on the upper surface of the tongue piece 131 of the edge piece 13. The flange which the said edge piece 13 and the 2nd edge piece 15 continue is formed by the piece 15 being located and adhere | attaching as mentioned above.

  The lower end of the tongue piece 131 reaches the first gathering point A, and a fine through-hole is likely to be formed at the first gathering point A in the form of a paper container. The purpose of providing the small protrusion 152 in a shape to be formed is to fill the container with the small protrusion 152 so as to straddle the end of the valley fold line between the edge piece 13 and the side plate 12. It was to prevent the contents from leaking out from the fine through holes at the first assembly point A after the cover plate was attached.

  The material used for the blank may be paperboard such as coated balls, coated manila, and ivory that are generally used for paper boxes. However, if the contents contain a lot of water such as frozen food, A polyethylene processed paper in which a polyethylene resin is applied to at least the inner surface by a melt extrusion method can be preferably used. In view of the fact that polyethylene is advantageous for joining when assembled in a tray, it is desirable to use a processed paper in which a thermoplastic resin such as polyethylene resin is applied to both sides of the blank.

  And the box making of the paper container with a flange mentioned above performed the bending in the fold line position of a blank using an assembly raising apparatus, and the adhesion | attachment in a required part was performed by the heat seal.

Japanese Patent No. 3687396

  However, when the flanged paper container is assembled by the raising device, the side plate and the second side plate around the bottom plate are folded from the position of the mountain fold line. And the end portion of the second side plate on the second side plate side approach each other, the second tongue piece that is the end portion of the second side piece abuts on the other edge piece, and the side plate is bent as set. There is a case where it becomes regulated without becoming (see FIG. 9). Next, the upper part of the fold line at the side of the side plate and the upper part of the fold line at the side of the second side plate do not overlap, Heat sealing was to be performed while assembling the paper container in a state where the valley fold line at the side fold line of the two side plates was slightly separated (see FIG. 10).

  In the process of assembling the blank, the folding and joining plate and the second folding and joining plate are overlapped and the inner surfaces face each other and heat sealing is performed. In the container manufactured by filling the contents into the paper container assembled with the valley fold portion at the valley fold line position on the second side plate side slightly apart, and further attaching the lid plate, for example, the contents It is good when the item is frozen and frozen, but if the contents have melted, the mountain fold at the side fold line position on the side plate side and the valley fold line at the valley fold line position on the second side plate side It is easy for liquid to pass between the parts. Since the cut edge at the outer periphery of the folded joint plate around the first set point A is along the valley-folded portion, when the container is tilted or turned over, the cut edge is especially transmitted. As a result, there is a problem that liquid easily leaks out of the container.

  Further, as described above, in the paper container in which the side plate side fold portion and the second side plate side valley fold portion are assembled slightly apart, the small protrusions located on the second side plate side are It will be in a state of floating away from the first set point A. And even if a fine through hole has occurred at the first gathering point A, it is said that liquid easily leaks out of the container along the cut edge at the position of the outer side of the folded joint plate from the through hole. There was a problem.

  Therefore, in view of the above circumstances, the present invention aims to prevent leakage of contents along the cutting edge on the outer side of the folded joint plate from the first assembly point, and a container with a cover plate attached thereto. The purpose is to make the container difficult to leak out the contents.

The present invention has been made in view of the above problems, and the invention according to claim 1 is such that a side plate is connected to two opposite sides of a rectangular bottom plate via a mountain fold line, respectively. Edge pieces are connected to the outer side opposite to the bottom plate through a valley fold line, and left and right ends of the edge pieces are respectively provided with laterally extending tongue pieces, and left and right sides of the side plate. Inverted triangular folded joint plates are connected to each side via a mountain fold line, and joined edge pieces are connected to the outer side opposite to the bottom plate of the folded joint plate via a valley fold line. And
A second side plate is connected to the other two opposite sides of the bottom plate via a mountain fold line, and a valley fold line is formed on the outer side of the second side plate opposite to the bottom plate. The second edge pieces are connected to each other, and second tongue pieces extending in the lateral direction are provided at the left and right ends of the second edge pieces, respectively, and the left and right sides of the second side plate are respectively connected via valley fold lines. The inverted triangular second folding joint plate is connected,
The side opposite to the side plate of the folded joint plate and the side opposite to the second side plate of the second folded joint plate are connected via a mountain fold line,
The side plate and the second side plate are folded and assembled in a tray shape, the folded joint plate and the second folded joint plate are overlapped, and the two joined plates are joined to the outer surface side of the second side plate. The edge piece, the second edge piece, and the joining edge piece are each folded in a valley, and the upper surface of the tongue piece and the second tongue piece are bent by bending the side plate and the second side plate. The tongue piece and the second tongue piece are overlapped with each other so that the lower surface faces each other, and the upper surface of the joining edge piece and the first The joining edge piece and the second edge piece are overlapped so that the lower surfaces of the two edge pieces face each other, and a flange is formed by the edge piece, the second edge piece, and the joining edge piece. A blank for paper containers with flanges,
Convexed and connected to the outer side of the folded joint plate toward the opposite side of the bottom plate via a valley fold line, and a mountain fold line on the side of the side plate and a valley fold line on the outer side of the side plate It is a blank for paper containers with a flange, characterized in that it has a damming piece whose end is an assembly point formed by gathering, and this blank for paper containers with flanges is provided to solve the above problems Is.

  The invention according to claim 2 is the invention according to claim 1, wherein the convex piece integrated with the second tongue piece is formed between the valley fold line on the side of the second side plate and the outer side of the second side plate. It is provided at a position in the vicinity of the set point formed by the valley fold line, and this flanged paper container blank is provided to solve the above problems.

Further, in the invention according to claim 3, the side plate is connected to the two opposite sides of the square bottom plate via a mountain fold line, respectively, and the outer side of the side plate opposite to the bottom plate. In addition, edge pieces are connected via a valley fold line, tongue pieces extending in the horizontal direction are provided at the left and right ends of the edge piece, respectively, and the left and right side edges of the side plate are reversed via a mountain fold line, respectively. Triangular folded joint plates are connected, and on the outer side opposite to the bottom plate of the folded joint plate, joint edge pieces are connected via valley fold lines,
A second side plate is connected to the other two opposite sides of the bottom plate via a mountain fold line, and a valley fold line is formed on the outer side of the second side plate opposite to the bottom plate. The second edge pieces are connected to each other, and second tongue pieces extending in the lateral direction are provided at the left and right ends of the second edge pieces, respectively, and the left and right sides of the second side plate are respectively connected via valley fold lines. The inverted triangular second folding joint plate is connected,
The side opposite to the side plate of the folded joint plate and the side opposite to the second side plate of the second folded joint plate are connected via a mountain fold line,
The side plate and the second side plate are folded and assembled in a tray shape, the folded joint plate and the second folded joint plate are overlapped, and the two joined plates are joined to the outer surface side of the second side plate. The tongue piece, the second edge piece, and the joining edge piece are each folded into a valley, and the tongue piece and the second tongue piece facing each other by the bending of the side plate and the second side plate, Are overlapped and bonded, and the upper surface of the joining edge piece and the lower surface of the second edge piece are overlapped by the superposition of the folding joining plate and the second folding joining plate on the second side plate. A flanged paper container which is bonded to form a flange with the edge piece, the second edge piece and the joining edge piece,
Convexed and connected to the outer side of the folded joint plate toward the opposite side of the bottom plate via a valley fold line, and a mountain fold line on the side of the side plate and a valley fold line on the outer side of the side plate It has a damming piece with the first set point formed by
The damming piece is overlaid on the lower surface of the second edge piece, and a second set point is formed by collecting a valley fold line on the side of the second side plate and a valley fold line on the outer side of the second side plate. The flanged paper container is characterized in that the end portion of the damming piece corresponding to the first assembly point is correspondingly bonded, and the flanged paper container is provided to solve the above-mentioned problem It is.

  The invention according to claim 4 is the invention according to claim 3, wherein the convex piece integrated with the second tongue piece is provided in the vicinity of the second set point, and the convex piece is the first piece. It is superimposed on the upper surface of the edge piece in the vicinity of one set point, and this flanged paper container is provided to solve the above-mentioned problems.

  According to the first aspect of the present invention, the fold-fold line on the side of the side plate and the side plate are connected to the outer side of the folded joint plate so as to protrude toward the opposite side of the bottom plate via the valley fold line. Since it has a damming piece whose end is a gathering point formed by a valley fold line on the outer side of the outer edge, the lower surface of the second edge piece in the flanged paper container assembled from the blank The damming pieces are overlapped with each other, so that the cutting edge along the valley fold portion does not occur from the first gathering point around the outer surface of the first gathering point. Therefore, even if there is a minute through hole at the first assembly point and the content (liquid) reaches the outside of the container, the damming piece prevents the transmission at the valley fold. Is done.

  According to the invention of claim 2, the convex piece integrated with the second tongue piece is overlapped with the upper surface of the edge piece of the side plate by raising the blank. By adhering to the edge piece of the side plate, it becomes easy to suppress the formation of fine through holes in this portion by tightening around the first assembly point.

  According to the invention of claim 3, the damming piece is overlapped on the lower surface of the second edge piece in the flanged paper container, and the valley fold portion is formed from the first gathering point around the outer surface of the first gathering point. There is no cut edge along. Therefore, even if there is a fine through hole at the first assembly point and the liquid content reaches the outside of the container, the damming piece prevents the transmission at the valley fold. The

  According to the invention of claim 4, the convex piece integrated with the second tongue piece overlaps the upper surface of the edge piece of the side plate. For example, when forming the flange or attaching the lid plate, the convex piece is used as the side plate. By adhering to the edge piece, it becomes easy to suppress the formation of fine through holes in this portion by tightening around the first assembly point.

It is explanatory drawing which shows embodiment of the blank for paper containers with a flange which concerns on this invention. It is explanatory drawing which expands and shows the principal part of embodiment of the paper container blank with a flange. It is explanatory drawing which shows embodiment of the paper container with a flange which concerns on this invention in the state seen from diagonally downward. It is explanatory drawing shown in the state which looked at embodiment of the paper container with a flange from diagonally upward. It is explanatory drawing which shows the conventional form with a blank. It is explanatory drawing which expands and shows the principal part of the conventional form. It is explanatory drawing shown in the state which looked at the conventional form from diagonally upward. It is explanatory drawing shown in the state which looked at the conventional form from diagonally downward. It is explanatory drawing which shows the state which the 2nd tongue piece in the conventional form contact | abutted to the edge piece. It is explanatory drawing which shows the malfunction which the collection point in the conventional form does not align.

Next, the present invention will be described in detail based on the embodiment shown in FIGS.
First, the blank which obtains the paper container 1 with a flange of this invention is demonstrated. FIG. 1 shows this blank, and a side plate 12 is connected to two opposite sides of a square bottom plate 11 via a mountain fold line, and the side plate 12 is opposite to the bottom plate 11. The edge piece 13 which is a structural member of the flange is connected to the outer side which is a through a valley fold line. The left and right ends of the edge piece 13 (ends facing the longitudinal direction of the edge piece 13) are respectively provided with tongue pieces 131 extending in the lateral direction (edge piece longitudinal direction).

  The left and right sides of the side plate 12 (sides facing the width direction of the side plate in the container form) are connected to each other through an inverted triangular fold joint plate 121 via a mountain fold line, and the bottom of the fold joint plate 121 is connected. A joining edge piece 122 is connected to the outer side opposite to the face plate 11 via a valley fold line.

  As in the conventional example described above, the joining edge piece 122 forms the same plane as the tongue piece 131 through the notch. Then, the cut end of the notch that separates the tongue piece 131 from the joining edge piece 122 and the folded joining plate 121 is a collection of a mountain fold line on the side of the side plate 12 and a valley fold line on the outer side of the side plate 12. The first set point A is reached. At the first set point A, valley fold lines on the outer side of the folded joint plate 121 also gather (see FIG. 2). And the point which the tongue piece 131 isolate | separates from the said joining edge piece 122 and the folding joining board 121 at the time of box making by the said cutting is the same as the prior art example demonstrated previously.

  In this embodiment, as shown in the drawing, the cut at the lower edge of the tongue piece 131 protrudes outward (the outer edge side of the edge piece) with the first set point A as the cut end. The round tip portion of the tongue 131 is folded over the position of the valley fold line on the outer side of the joining plate 121. In this way, by making a curved cut with the cut end reaching the first set point A, the outer side of the folded joint plate 121 is placed on the opposite side of the bottom plate 11 via the valley fold line. The damming pieces 18 that are convexly connected to each other are formed so as to be separated from the tongue pieces 131 (FIG. 2).

  This damming piece 18 has the first gathering point A as one end, and the other end where the cut line forming the tip of the tongue 131 reaches the valley fold line. The convex shape of the stopper piece 18 itself is a portion of the damming piece 18 that is close to the second tongue piece 151 of the second edge piece 15 as will be described later. Need only be suppressed at the position of the first set point A, so that it is not necessary to have a shape that protrudes greatly toward the outer side of the edge piece 13, and the size required for adhesion of the tongue piece 131 is not required. There is no loss.

  Further, the second side plate 14 is connected to the other two opposite sides of the bottom plate 11 through mountain fold lines, respectively, and the outer side of the second side plate 14 opposite to the bottom plate 11 is connected. A second edge piece 15, which is a component member of the flange, is connected to the side via a valley fold line. A second tongue piece 151 extending in the lateral direction (longitudinal direction of the second edge piece 15) is provided on the left and right ends of the second edge piece 15 (ends facing the longitudinal direction of the second edge piece 15). Yes.

  In each of the second tongue pieces 151, as shown in FIG. 2, a convex piece 16 is integrally provided at an end portion on the second side plate 14 side, and the convex piece 16 is formed by the second tongue piece 151. It protrudes from the edge part by the side of the 2nd side plate 14 in the shape of a substantially square. And this convex piece 16 is provided so that it may be located only on the upper surface of the edge piece 13 in which the said tongue piece 131 continues after boxing, and the trough between the side plate 12 and the edge piece 13 is provided. It is provided so as not to bend at the bent portion of the fold line.

  Since both sides of the packaging material constituting the blank are thermoplastic resin layers having heat sealing properties, if heat sealing is performed with the upper surface of the edge piece 13 and the lower surface of the convex piece 16 facing each other in the form after box making, The convex piece 16 is bonded within the heat seal region of the edge piece 13. And in this case, since the convex piece 16 does not straddle the part of the valley fold line between the side plate 12 and the edge piece 13, the convex piece 16 is adhered to the edge piece 13 in a flat state.

  The assembly for obtaining the flanged paper container 1 from the blank is the same as that of the prior art, and is performed as follows. That is, the side plate 12 and the second side plate 14 are folded and assembled in a tray shape, and the inner surfaces of the folded joint plate 121 and the second folded joint plate 141 are bonded to each other. Then, the folded and joined plate 121 and the second folded and joined plate 141 are bent to the second side plate 14 side. At the same time, the edge piece 13, the second edge piece 15, and the joining edge piece 122 are each folded in a valley and joined by superimposing the adhered folding joining plate 121 and the second folding joining plate 141 onto the second side plate 14. The upper surface of the edge piece 122 and the lower surface of the second edge piece 15 that overlaps the upper surface of the edge piece 122 face each other, heat-seal the opposite joining edge piece 122 and the second edge piece 15, and the side plate 12 and the second edge piece 15. The upper surface of the tongue piece 131 and the lower surface of the second tongue piece 151 are opposed to each other by bending with the side plate 14, and the tongue piece 131 and the second tongue piece 151 are heat-sealed. A flange 17 formed continuously with the second edge piece 15 is formed, and the flanged paper container 1 is assembled (FIG. 4).

  Furthermore, the upper surface of the damming piece 18 is also opposed to the lower surface of the second edge piece 15 due to the overlap of the bonded folding joining plate 121 and the second folding joining plate 141 to the second side plate 14, and This damming piece 18 is also bonded and fixed to the second edge piece 15 when heat sealing is performed. And the end part which is the 1st gathering point A of the damming piece 18 is formed by a valley fold line on the side of the second side plate 14 and a valley fold line on the outer side of the second side plate 14 being assembled. Bonded corresponding to the two set points B, and bonded so that the bent portion of the valley fold line which is the base end portion of the damming piece 18 overlaps the bent portion of the valley fold line of the second edge piece 15. (Fig. 3).

  As described above, the damming piece 18 is bonded so as to correspond to the outer surface side at the first assembly point A and to cover the valley-folded portion on the lower surface of the second edge piece 15. The flanged paper container is assembled in a state where fine through holes are formed at the first assembly point A, the contents are filled, the lid plate is attached, and the contents are placed on the side plate side. Even if it may face the outside from the through hole at the first assembly point A through the gap between the mountain fold portion of the side and the valley fold portion of the side edge of the second side plate, The fact that the content is transmitted to the valley fold portion at the edge piece 15 is stopped by the damming piece 18, so that leakage of the content can be prevented.

  In addition, it is also possible to superimpose the said convex piece 16 on the upper surface of the edge piece 13 in the non-heat-sealed state at the time of the assembly of the paper container 1 with a flange. Then, as described above, the contents are filled and covered with a cover plate. When the periphery of the cover body and the flange 17 of the flanged paper container 1 are heat sealed, the positions corresponding to the convex pieces 16 are also heated. If pressure is applied and heat sealing is performed, the convex piece 16 is more effective because it tightens around the first set point A while being crushed, and the generation of fine through holes can be prevented more reliably. It is also possible to slightly reduce the angle on the bottom plate 11 side of the folded joint plate 121 and slightly increase the angle on the bottom plate 11 side of the second folded joint plate 141. The mountain fold line on the side of the face plate 12 and the valley fold line on the side of the second side plate 14 can be more closely overlapped, which is even more effective in enhancing the effect of preventing leakage of contents. It is.

DESCRIPTION OF SYMBOLS 1 ... Paper container with a flange 11 ... Bottom plate 12 ... Side plate 121 ... Folding joining plate 122 ... Joining edge piece 13 ... Edge piece 131 ... Tongue piece 14 ... Second side board 141 ... Second folding joining plate 15 ... Second edge Piece 151 ... Second tongue piece 152 ... Small protrusion 16 ... Convex piece 17 ... Flange 18 ... Damping piece A ... First set point B ... Second set point

Claims (4)

A side plate is connected to two opposite sides of the rectangular bottom plate via a mountain fold line, and an edge piece is formed on the outer side of the side plate opposite to the bottom plate via a valley fold line. Are connected to the left and right ends of the edge pieces, respectively, and the left and right sides of the side plates are connected to the left and right sides of the side plates, respectively, via inverted fold lines, respectively. The outer edge on the opposite side to the bottom plate of the folded joint plate is joined with a joining edge piece via a valley fold line,
A second side plate is connected to the other two opposite sides of the bottom plate via a mountain fold line, and a valley fold line is formed on the outer side of the second side plate opposite to the bottom plate. The second edge pieces are connected to each other, and second tongue pieces extending in the lateral direction are provided at the left and right ends of the second edge pieces, respectively, and the left and right sides of the second side plate are respectively connected via valley fold lines. The inverted triangular second folding joint plate is connected,
The side opposite to the side plate of the folded joint plate and the side opposite to the second side plate of the second folded joint plate are connected via a mountain fold line,
The side plate and the second side plate are folded and assembled in a tray shape, the folded joint plate and the second folded joint plate are overlapped, and the two joined plates are joined to the outer surface side of the second side plate. The edge piece, the second edge piece, and the joining edge piece are each folded in a valley, and the upper surface of the tongue piece and the second tongue piece are bent by bending the side plate and the second side plate. The tongue piece and the second tongue piece are overlapped with each other so that the lower surface faces each other, and the upper surface of the joining edge piece and the first The joining edge piece and the second edge piece are overlapped so that the lower surfaces of the two edge pieces face each other, and a flange is formed by the edge piece, the second edge piece, and the joining edge piece. A blank for paper containers with flanges,
Convexed and connected to the outer side of the folded joint plate toward the opposite side of the bottom plate via a valley fold line, and a mountain fold line on the side of the side plate and a valley fold line on the outer side of the side plate A flange for a paper container with a flange, characterized by comprising a damming piece whose end is a set point formed by gathering together.   A convex piece that is integrated with the second tongue piece is provided at a position in the vicinity of the set point where the valley fold line on the side of the second side plate and the valley fold line on the outer side of the second side plate are gathered. The flanged paper container blank according to claim 1. A side plate is connected to two opposite sides of the rectangular bottom plate via a mountain fold line, and an edge piece is formed on the outer side of the side plate opposite to the bottom plate via a valley fold line. Are connected to the left and right ends of the edge pieces, respectively, and the left and right sides of the side plates are connected to the left and right sides of the side plates, respectively, via inverted fold lines, respectively. The outer edge on the opposite side to the bottom plate of the folded joint plate is joined with a joining edge piece via a valley fold line,
A second side plate is connected to the other two opposite sides of the bottom plate via a mountain fold line, and a valley fold line is formed on the outer side of the second side plate opposite to the bottom plate. The second edge pieces are connected to each other, and second tongue pieces extending in the lateral direction are provided at the left and right ends of the second edge pieces, respectively, and the left and right sides of the second side plate are respectively connected via valley fold lines. The inverted triangular second folding joint plate is connected,
The side opposite to the side plate of the folded joint plate and the side opposite to the second side plate of the second folded joint plate are connected via a mountain fold line,
The side plate and the second side plate are folded and assembled in a tray shape, the folded joint plate and the second folded joint plate are overlapped, and the two joined plates are joined to the outer surface side of the second side plate. The tongue piece, the second edge piece, and the joining edge piece are each folded into a valley, and the tongue piece and the second tongue piece facing each other by the bending of the side plate and the second side plate, Are overlapped and bonded, and the upper surface of the joining edge piece and the lower surface of the second edge piece are overlapped by the superposition of the folding joining plate and the second folding joining plate on the second side plate. A flanged paper container which is bonded to form a flange with the edge piece, the second edge piece and the joining edge piece,
Convexed and connected to the outer side of the folded joint plate toward the opposite side of the bottom plate via a valley fold line, and a mountain fold line on the side of the side plate and a valley fold line on the outer side of the side plate It has a damming piece with the first set point formed by
The damming piece is overlaid on the lower surface of the second edge piece, and a second set point is formed by collecting a valley fold line on the side of the second side plate and a valley fold line on the outer side of the second side plate. The flanged paper container is characterized in that the end portions which are the first gathering points of the damming pieces are bonded correspondingly.   A convex piece integrated with the second tongue piece is provided at a position near the second aggregation point, and the convex piece is superimposed on the upper surface of the edge piece at a position near the first aggregation point. The flanged paper container according to claim 3.

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