JP2570637Y2 - Blank for paper container - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application field] The present invention is applicable to non-food liquids such as fruit juice drinks, milk, sake, etc. and shampoos, rinses, etc.
Further, the present invention relates to a blank of a paper container having a flat top portion used for a solid or a powder.

[0002]

2. Description of the Related Art In recent years, paper containers having flat tops have been developed.
Instead of conventional glass containers and metal containers, chilled distribution type liquid foods such as milk, lactic acid drinks and liquid soups, and room temperature type liquid foods requiring long-term storage such as sake, fruit juice drinks and mentsuyu Over a wide range,
Became used in large quantities. In addition, recently, it is also used for toiletries such as shampoo and rinse,
Also, application to solid or powder contents has come to be considered. Conventional representative blanks used in the box making of paper containers having these flat tops are, as shown in an exploded plan view in FIG. 3, in the horizontal direction, five rectangular sticking panels (211). ), The left side panel (212), the front panel (213), the right side panel (214), and the back panel (215) have four vertical fold lines (231, 232,
233, 234), and the five panels are vertically connected via three horizontal fold lines (241, 242, 243). , A top part (222), a wall part (223), and a bottom part (224) are sequentially arranged in parallel from the top in order, and a ridge connecting the left and right corners at the lower end of the top part for folding is provided on the top part of the left and right side panels. Two oblique fold lines (251, 252, 253, and 254) intersecting the lower end (k, n) of the vertical fold lines (261, 262) of the upper end seal portion are provided in an isosceles triangular shape whose base is. Further, on the bottom of the left and right side wall panels, an oblique line which intersects the upper end of a fold line (263, 264) perpendicular to the lower end seal portion in an isosceles triangular shape whose bottom is a ridge connecting the left and right corners at the upper end of the bottom. Two fold lines ( 55 and 256, 257 and 25
8).

[0003]

However, as shown in FIG. 3, the conventional blank has an upper peripheral edge shape (i-
abcdcefg) are the same horizontal straight lines,
In addition, for the laminated material of the blank base material, a heat sealing method is usually used for sticking at the time of box making of a paper container, so a polyolefin film layer is required on the innermost surface and the outermost surface, and the simplest method is used. The structure is also a three-layer structure of polyethylene / paperboard / polyethylene, and in the case of a normal temperature type food, the polyethylene / paperboard / aluminum foil /
A polyethylene terephthalate / polyethylene five-layer structure was used. For this reason, at the time of sealing and sealing the top after filling the contents in the box making process, as shown in FIGS. 4A and 4B, the upper sticking portion is stuck by heat fusion and folded (k). With the fold line of -lmn inside, a so-called
Valley fold) and left and right triangular ears (271, 2)
72) is bent downward at a right angle, and is attached to the upper part of the wall (223) of the left and right side panels. −f
-De-e) sometimes caused the plastic to protrude due to thermal fusion or the cross section of the laminated material to be seen, and the appearance quality of the product was significantly impaired. The present invention solves the conventional problem of impairing the appearance described above by improving the peripheral shape of the upper end of the blank.

[0004]

The present invention is shown in FIGS.
As shown in FIG. 5, a horizontal sticking panel (111) and a left side panel (112) for folding into a rectangular parallelepiped paper container (300) having flat tops (all adjacent surfaces intersect at right angles) are folded. ), the front panel (113), through the border in the order of the right side panel (114), back panel (115)
In addition, each panel is vertically attached with an upper sticking part (121), a top part (122), and a wall part (12).
3), the bottom (order of continuously arranged blanks through the border 124), upper peripheral line of the front panel (113) (c
-D) is the upper edge line (f-) of the back panel (115).
g) and the upper edge line (i) of the adhesive panel (111).
-A) lower and the adhesive panel and the front panel;
Left side panel located between front panel and back panel
(112) and the upper edge line (a) of the right side panel (114).
-Bc and deff) are the left side panel and the right side panel.
From the middle point (b and e) of the upper edge line of the
(Bc and de) are the upper edge line of the front panel (c-
At the same height as d) and pasted from the intermediate point (b and e)
The upper edge lines (ab and b) on the receiving panel side and the back panel side
ef) is an obliquely upward inclined panel and the back surface
A blank (100) for a paper container, which is formed continuously to the upper edge line (ia and fg) of the panel .

[0005] Incidentally, the upper edge line (iabcdcefg) of the above-described paper container blank is a sticking panel, a left side panel, a front panel, a right side panel, and a back side. The upper edge line (ia, a-
bc, cd, def, and fg).

The inclined upper peripheral line provided on the left side panel and the right side panel may be any of a straight line, a curved line, and a stepped line.

[0007]

With the use of the paper container blank of the present invention, as shown in FIGS. 2 (A) and 2 (B), when the top portion is sealed after filling the contents in the box making process, the upper sticking portion is thermally fused. It is stuck by the attachment method and folded (the so-called valley fold, with the fold line of k-l-m-n inside), and the left and right triangular ears (1
71, 172) are bent downward at a right angle, and when they are stuck to the wall portions (123) of the left and right side panels, the upper edge line (iabc) of the blank (100) shown in FIG. −
de-f-g) is a sticking panel in which the upper end peripheral line shape (cd, bc, de) of the front panel (113) and half of the left and right side panels (112, 114) is formed. (111)
2 (A) and 2 (A), the lower side panel (115) and the upper end peripheral line shapes (ia, fg, ab, ef) of the left and right side panels are formed to be lower. As shown in B), the overlapping portion of the upper sticking portion (121) after the box is formed is the upper edge line shape (cd, bc, de) of half of the front panel and the left and right side panels. Is attached to the panel (11
1) and the shape of the upper edge line (ai, gf, ba, fe) of the back panel and half of the left and right side panels is covered, and the plastic sticks out by heat fusion. It is difficult to see, and the cross-sectional thickness of the laminated material at the tip of the sticking portion is reduced.

[0008]

EXAMPLE First, a blank for a paper container of the present example was prepared by punching out a laminated material at the same time as making a fold line by using a punching machine. FIG. 1 is an exploded plan view of the blank, in which five rectangular seal panels (111), a left side panel (112), a front panel (113), a right side panel (114), and a back panel ( 115) are sequentially connected in parallel via four vertical fold lines (131, 132, 133, 134), and the five panels are further provided with three horizontal fold lines (141, 141) in the vertical direction. 142, 14
3) via the upper end seal part (121) and the top part (12)
2) The side wall portion (123) and the bottom portion (124) are sequentially arranged in parallel from the top, but the blank (100) according to the present invention.
Is the upper edge line (iabcdcefg) of
The top edge line shape (ia, cd, f) of the sticking panel (111), the front panel (113), and the back panel (115)
-G) is made horizontal and straight, and the upper edge line (cd) of the front panel is made lower than the upper edge line (ia, fg) of the sticking panel and the back panel to give a step. The upper edge lines (abc, def) of the left side panel (112) and the right side panel (114) are up to the midpoint of the panel width (cb, de). It is formed continuously and parallel to the upper edge line (cd) of each adjacent front panel, and from the panel middle point (b, e), the edge line of the left side panel is the upper edge edge of the sticking panel. The upper right edge (a) of the line, the upper edge line of the right side panel and the upper left edge (f) of the upper edge line of the back panel were continuously formed in an inclined straight line between the steps. Further, the lower end seal portion (12) is provided on the bottom portions of the left and right side panels and the front panel via a horizontal fold line (144) and two vertical fold lines (163, 164).
5) is provided, and a vertical fold line (161, 162) is provided at the center of each of the upper end seal portions of the left and right side panels. The vertical fold line (16) of the upper end seal portion is formed in an isosceles triangle with the ridge connecting the corners of
1, 162) are provided with two oblique fold lines (151, 152, 153, 154) intersecting with the lower end (k, n) of the left and right side panels. Two oblique fold lines (155, 156, 156, 156) intersecting the upper end of the vertical fold lines (163, 164) of the lower end seal portion in an isosceles triangular shape with the ridge connecting the corners as the base.
157 and 158).

The construction of the laminated material of the blank of this embodiment described above is [outside] polyethylene (20 μm) / paper (340).
g / m ² ) / aluminum foil (7 μm) / polyethylene terephthalate (12 μm) / polyethylene (60 μm)
m) [Inside], with characters and patterns printed on the surface by gravure printing.

Next, the paper container blank side-sealed with a frame sealer is passed through a filling machine, the bottom is heat-sealed, water is filled for testing, and the top is heat-sealed to seal the content. A liquid paper container (300) according to the present invention of a normal temperature distribution type having a flat top shown in FIG.

In the above-described box making process using the paper container blank of the present embodiment, after the upper end seal portion is heat-sealed, as shown in FIGS. Was folded, and the triangular ears (171 and 172) protruding from both ends of the top were bent downward and stuck to the side wall to produce a paper container. Also, the appearance was good without any protrusion due to heat fusion of the plastic.

[0012]

[Effects of the Invention] When a paper container having a flat top is manufactured using the paper container blank of the present invention, the outer edge line of the sticking portion on the top is not bulky and is neat, and the plastic is formed by heat fusion. There is no protrusion, the appearance of the paper container is good, and the display effect at the time of sale is improved.

[Brief description of the drawings]

FIG. 1 is an exploded plan view of a paper container blank of the present invention.

FIG. 2 is an explanatory view showing a closed state of a top portion in a box making process of the paper container according to the present invention.

FIG. 3 is an exploded plan view of a conventional paper container blank plate.

FIG. 4 is an explanatory view showing a state in which a top portion is closed and sealed at the time of a box forming process of a conventional paper container blank.

[Explanation of symbols]

100, 200 Blank 111, 211 Sticking panel 112, 212 Left panel 113, 213 Front panel 114, 214 Right panel 115, 215 Back panel 121, 221 Top Adhering parts 122, 222 ... Top parts 123, 223 ... Side wall parts 124, 224 ... Bottom parts 125, ... Lower attaching parts 131, 132, 133, 134, 141, 142, 1
43,151,152,153,154,155,15
6,157,158,161,162,163,16
4,231,232,233,234,241,24
2,243,251,252,253,254,25
5,256,257,258,261,262,26
3,164 ... Crease line 171,172,271,272 ... Triangular ear 300,400 ... Liquid paper container

Claims (1)

(57) [Scope of request for utility model registration] 1. A horizontal sticking panel, a left side panel, and a horizontal panel for folding into a rectangular parallelepiped paper container having a flat top.
The front panel, the right side panel, and the back panel are routed in this order
In addition, the upper end of the front panel of the blank , in which each panel is vertically connected in the order of an upper adhesive portion, a top portion, a wall portion, and a bottom portion through a ruled line, is provided at the upper surface of the back panel.
Lower than the upper end of the
Panel located between the front and back panels
The upper edges of the left and right panels are
From the midpoint of the front panel to the top of the front panel
At the height and from the intermediate point to the sticking panel side and back side
A blank for a paper container, wherein the panel side is formed to be inclined obliquely upward .