JP5115837B2 - Paper container - Google Patents

Description

  The present invention belongs to the technical field of a cylindrical paper container with an opening mechanism, and particularly relates to a paper container provided with a band-shaped tearing zipper.

  Conventionally, as a cylindrical paper container for storing confectionery and the like, those equipped with various opening mechanisms including a zipper made of perforated cut lines are known, but considering the sealing performance A belt-like shape in which two parallel half-cut lines (half cuts) are formed on the front side, and two parallel half cut lines (half cuts) narrower than the widths of the two half-cut lines are formed on the back side. Those having a tearing zipper are known. In consideration of the convenience of opening, the one provided with a knob portion corresponding to the width of the two half-cut lines on the surface side at the edge is also used. When the picking portion is pulled, the paper container having the tear zipper can be opened by causing delamination of the paper at the two strips sandwiched between the half-cut line on the front surface side and the half-cut line on the back surface side.

Japanese Utility Model Publication No.57-13473 JP-A-8-258833

  The paper container equipped with the above-mentioned tearing zipper is manufactured by assembling a blank sheet with two half-cut lines on each of the front and back sides, and these half-cut lines are simultaneously punched from the blank sheet with a punching machine. It is inserted with a short cutting edge. Therefore, it is difficult to manage the depth of the half-cut line, and depending on the thickness of the paper, it may be penetrated or cut. In particular, it is difficult to manage the half-cut line on the back side, which affects productivity and quality.

  In addition, the knob part is provided at the edge with the width of two half-cut lines on the front side, but the cutting blade that punches the outer shape of the knob part and the cutting blade that forms the half-cut lines on the front and back sides are brought closer However, when the blank sheet is punched out, the base of the picked part does not connect to any half-cut line, and an uncut part remains between them. There were cases where it could not be opened successfully.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a paper container having a tearing zipper having good productivity and quality and excellent openability. is there.

In order to achieve the above object, the paper container of the present invention forms two parallel half-cut lines on the surface side, and two parallel half-cut lines that are narrower than the width of the two half-cut lines. It consists of a paperboard blank sheet with a strip-shaped tear zipper formed on the back side, and one edge in a state where the two half-cut lines on the front side and the two half-cut lines on the back side wrap around each other A zipper opening knob corresponding to the width of the two half-cut lines on the surface side is provided so as to protrude from the edge portion. A paper container, on the front side portion of the zipper located on the lower side of the knob portion on the other edge portion to be adhered to one edge portion, the paper is delaminated integrally with the knob portion, The delamination of the paper occurs at the two strips sandwiched between the half-cut line on the front side and the half-cut line on the back side. So that lead to, is characterized by providing at least the back surface side of the two width direction of the auxiliary half-cut line in length extending outward from the half-cut line.

When the paper container of the present invention pulls the knob part to open the tearing zipper , the other edge part on the lower side of the knob part is integrated with the knob part from the auxiliary half-cut line to delaminate the paper. As a result of delamination at the other edge, the two strips sandwiched between the half-cut line on the front side and the half-cut line on the back side start delamination, and the start position is shifted. A tearing situation is prevented, and it is opened cleanly by pulling the knob as it is. In addition, the auxiliary half-cut line is formed at the same time as the blank sheet is punched out. However, the two half-cut lines for opening and closing can be formed with cut rolls, so even a small amount of paper is constant. Therefore, it is possible to accurately produce a product with good quality and excellent sealing performance and unsealing performance.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view showing an example of a paper container according to the present invention, and FIG. 2 is a development view of a blank for assembling the paper container shown in FIG.

  The blank sheet is obtained by punching a paperboard having a heat-fusible resin on the surface, and as shown in FIG. 2, each of the front panel 1, the side panel 2, the back panel 3, and the side panel 4 is vertically long through a fold line. And the adhesive margin pieces 5 are successively arranged side by side, and an inner upper surface panel 6 and an inner lower surface panel 7 are connected to the upper and lower sides of the front panel 1 via fold lines, respectively. An upper folding panel 8 and a lower folding panel 9 are connected to each other via a fold line, and an outer top panel 10 and an outer bottom panel 11 are connected to the top and bottom of the back panel 3 via a fold line, respectively. An upper folding panel 12 and a lower folding panel 13 are connected to each other vertically via folding lines.

  As shown in the figure, two strip-like tear zippers G are provided on the blank sheet so as to cross the front panel 1, the side panel 2, the back panel 3, the side panel 4, and the adhesive margin piece 5. Yes. The tear zipper G is formed by forming two parallel half-cut lines a on the front surface side and two parallel half-cut lines b narrower than the width of the two half cut lines a on the back side. The knob portion 14 corresponding to the width of the two half-cut lines a on the surface side is provided so as to protrude from the edge of the front panel 1. And in the place of the zipper G in the glue margin piece 5, the three auxiliary half cut lines c of the width direction are provided in the front side part. These half-cut lines c extend parallel to the edge between the two half-cut lines b on the back surface side, and are provided from the half-cut line b on the back surface side to the half-cut line a on the front surface side in an oblique direction. .

  The auxiliary half-cut line c is not limited to the form shown in FIG. 2, and may be any length that extends at least outward from the two half-cut lines b on the back surface side. In addition, a plurality of lines may be provided, but at least one is sufficient. Further, the shape may be appropriately designed in consideration of the ease of peeling described later.

  Both the half-cut lines a and b on both the front and back sides for opening are formed in advance by a cut roll before blank blanking, and the auxiliary half-cut line c in the adhesive margin piece 5 is formed during blank blanking.

  The cut roll used when forming the half-cut lines a and b for opening is a well-known one having a shape in which a blade protrudes from the outer periphery of the disk, and presses the cut roll while feeding continuous paper. Thus, a half cut line (half cut) having a certain depth is formed on the paper. For example, a cut roll is attached to the sheet cutting machine, and the sheet is cut into a predetermined width by the sheet cutting machine, and at the same time, both the front half cut line a and the rear half cut line b are formed. Further, the cut line c is formed at the same time when a blank sheet is punched out by using a punching machine to which a cutting blade is added.

  As described above, the two half-cut lines on each of the front and back surfaces are formed by the cut roll, so that even a small amount of paper can be accurately formed at a constant depth. Moreover, when increasing the number of unsealed locations, the number of half-cut locations is increased and the quality is not stable in the conventional method of inserting simultaneously with punching, but the number can be easily increased by using a cut roll.

  To assemble the paper container shown in FIG. 1 from the blank sheet shown in FIG. 2, the entire front panel 1 is attached to the adhesive margin piece 5 by sacking and is supplied to the filling process in this sack-attached state. Wake up and close the bottom, then put the contents and close the top. That is, the lower folding panels 9 and 13 are folded, the inner bottom panel 7 and the outer bottom panel 11 are folded and adhered, the bottom is closed, the contents are put in, and the upper folding panels 8 and 12 are folded. The upper part is closed by folding the inner upper panel 6 and the outer upper panel 10 and attaching them.

  As shown in FIG. 1, the paper container manufactured in this manner is in a state in which the knob portion 14 slightly protrudes from the edge of the front panel 1. Then, as shown in FIG. 3, by first pulling with the knob portion 14, the glue margin piece 5 on the lower side of the knob portion 14 is first integrated with the knob portion 14 from the auxiliary half-cut line c. Paper delamination occurs, and then, along with this delamination, the paper is unsealed by causing delamination at the two strips sandwiched between the front half cut line a and the back half cut line b . That is, the sticking portion of the knob portion 14 causes delamination, and accordingly, delamination of the paper is performed at the belt-shaped portions along the half-cut lines a and b having a constant depth. Therefore, a situation in which the start position is shifted and torn is prevented, and the delamination can be caused neatly and opened.

  In the case where two tear zippers G are provided on the upper and lower sides as in the paper container of FIG. 1, for example, the upper tear zippers G are first opened, and the upper portion is removed. After consuming the contents, the lower tearing zipper G is opened and the contents above it are removed to consume the contents. Of course, what is necessary is just to open two tear zippers suitably according to the contents.

  The embodiment of the present invention has been described in detail above, but the paper container according to the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. It is natural to be.

  For example, in the above example, the cylindrical paper container has a rectangular cross-section and is elongated vertically, but is not limited to this shape. For example, a cylindrical shape or a conical shape may be used, or a shape in which a lower portion of the cylindrical shape is flattened may be used.

  In the above example, two tearing zippers are provided side by side, but this number may be appropriately determined according to the application, and may be one or three or more.

  Moreover, in the above example, the half cut line provided on each of the front and back surfaces is formed with a cut roll in advance before blank blanking, but it can also be formed by pressing the cut roll against the blank sheet after blanking. is there.

It is a perspective view which shows an example of the paper container which concerns on this invention. It is an expanded view of the blank sheet which assembles the paper container shown in FIG. It is a perspective view which shows a mode that the paper container shown in FIG. 1 is opened.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front panel 2 Side panel 3 Back panel 4 Side panel 5 Glue piece 6 Inner upper surface panel 7 Inner bottom panel 8 Upper folding panel 9 Lower folding panel 10 Outer upper panel 11 Outer bottom panel 12 Upper folding panel 13 Lower folding panel 14 Picking part G Tear zipper a Half cut line (surface side)
b Half-cut line (back side)
c Auxiliary half-cut line

Claims (1)

A paperboard blank having a band-shaped tearing zipper having two parallel half-cut lines formed on the front side and two parallel half-cut lines narrower than the two half-cut lines formed on the back side It consists of a sheet, and the back side of one edge part and the front side of the other edge part are pasted in a state where each of the two half-cut lines on the front side and the two half-cut lines on the back side wrap around each other. This is a paper container in which a zipper opening knob corresponding to the width of two half-cut lines on the surface side is provided protruding from the end edge, and is attached to one end edge The paper is delaminated on the front side part of the zipper located on the lower side of the knob part at the other edge, and the delamination is integrated with the knob part. The delamination is on the front side and the back side half line. order to lead to delamination of the paper that occurs in Article 2 portions of sandwiched between the at least the back side Paper container characterized in that a width direction of the auxiliary half-cut line in length extending outward from the two half-cut lines.

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