JPS6127273B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a container that can be filled with liquid (particularly high temperature sterilized liquid) or powder and can be stored for a long period of time.

[Conventional technology]

Conventional containers of this kind are assembled into a box shape using cardboard laminated with polyethylene or the like on both the inside and outside, and the container is filled with contents and sealed. . However, since conventional containers use cardboard, if the cut edge of the cardboard comes into direct contact with the contents, the contents may seep through, or if there are steps in the cardboard, the contents may leak out. For this reason, conventional containers are assembled by folding the cut ends of the cardboard so that they do not come into direct contact with the contents, or by forcibly crushing the steps of the cardboard through embossing etc. after the container is molded. It is necessary to prevent things from penetrating or leaking, and the disadvantage is that the assembly work is very complicated. In particular, when high-temperature sterilized liquid is filled and sealed while still at high temperature, strong suction pressure is applied by the contraction of the liquid contents and air after cooling, causing the container to dent and reducing its commercial value. Therefore, it is necessary to use a fairly thick cardboard that can withstand the strong suction pressure, which further exacerbates the above-mentioned drawbacks.

Therefore, a container that can be stored for a long time was developed.
This container, as typified by the container described in Japanese Utility Model Application No. 52-14822, has a double structure consisting of an outer body and an inner package, and the outer body is made of cardboard or the like, and the front body is made of cardboard. , a canopy part and a bottom lid part are attached to the upper and lower edges of the back body part and both left and right side body parts, and the front part,
The back and left and right sides are each separated (independently) and extended through folding lines, and the inner envelope is made of a flat bottom bag made of synthetic resin, and the inner envelope is glued to the inside of the outer body. It is something. When filling and sealing a liquid, first assemble the outer body into a rectangular shape, then fold the bottom lids on both left and right sides inward, and then fold the front and back bottom lids inward. Next, the inner envelope is filled with liquid, the canopies on both left and right sides are folded outward, the upper edges of the inner envelope are glued, and then the canopies on both left and right sides are folded inward. Furthermore, by folding the front and back canopies inward, filling and sealing of the liquid is completed. As described above, this container has a double structure consisting of an outer body and an inner envelope, so by filling the inner envelope with liquid and sealing it, the cut or step of the outer body does not come into direct contact with the liquid. Therefore, penetration and leakage of liquid can be prevented without special processing on the outer body, and long-term storage is possible.

[Problem that the invention seeks to solve]

However, in the conventional container described above, the top and bottom parts of the outer body are separated into the front, back, left and right sides, and the inner bag is a flat-bottomed bag, so the outer body and the inner bag cannot be separated. To assemble, first fold the canopies on both the left and right sides outward, glue the upper edges of the inner package, then fold the canopy and bottom lids on both the left and right sides inward, and then attach the front and back sides. It is necessary to fold the canopy and bottom cover inward. For this purpose, we developed an assembly machine for assembling single-layered containers (i.e., roof-shaped milk containers) used today (i.e., the canopy and bottom lids on both left and right sides are folded outwards, and the By folding it in, the front and back canopy sections and bottom cover section, which are connected to them, are folded inward.
An assembly machine that folds in the top and bottom parts of a container at the same time. ), it cannot be assembled. Therefore,
There is a problem in that a new assembly machine needs to be developed, and this assembly machine becomes complicated because it requires the canopy parts on both the left and right sides to be folded outward.

In addition, if a bag is glued to the inside of a paper container with a roof-shaped structure, such as a milk container, and the roof of the roof-shaped milk container is assembled and the mouth of the bag is sealed,
Since the folded tips of the mouth edges always overlap, there is a problem that adhesion failure occurs due to the step in the thickness of the bag, and it is also impossible to pull out and form the injection port.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a container that can be assembled by an assembly machine for assembling single-layered containers, ie roof-shaped milk containers.

Another object of the present invention is to provide a container that can prevent the folded tips of the mouth edge of the bag from overlapping when the outer body and the bag are assembled.

[Means for solving problems]

The present invention consists of a box-shaped outer body and a bag adhered to the inside of the outer body, and the outer body is made of a shape-retaining flat plate, and the flat plate has four longitudinally folded curves. to form a front body part and a back body part, right and left body parts that are alternately adjacent to the front body part and the back body body, and a glue allowance located at one end of these body parts, and A folding line is provided at the center of the face body part parallel to the four vertical folding curves, and two horizontal folding curves are provided on the flat plate.
A canopy part, a side wall part, and a bottom lid part are formed by forming four pieces each at right angles to the vertical folding curve and two folding lines of the book, and the front body part faces inside of the four canopy parts. The width of the upper edge of the canopy on the back trunk is made slightly larger than the width of the transverse curve at the boundary between the canopy and the side wall, and the height of the canopy on the front trunk and back trunk is set to be slightly larger than the width of the upper edge of the canopy on the back trunk. and approximately half the width of the side wall portion, and the bag body is made by folding a sheet-like material into a W shape and sealing both sides thereof, and the inner width of both side seal portions is is approximately equal to half the width of the entire body of the outer fuselage, and its height is slightly longer than the sum of the height of the canopy and the height of the side walls of the outer fuselage when the outer fuselage is assembled into a box shape. , a knob allowance is provided on at least one of the left and right side seal portions, and the upper and lower portions of the bag are attached to the upper edge and lower side wall portions of the canopy of the outer body. The outer body is glued so that the tab margin is located approximately at the center of the side body of the outer body and the mouth edge of the bag slightly protrudes from the upper edge of the canopy of the outer body. The book is characterized in that it is folded along the folding line of the book, and the gluing margin of the outer body is glued to the other end of the body.

[Effect]

The basic shape of the present invention is a roof-shaped milk container, and the top and bottom lids of the outer body are connected to each other on the front, back, and both left and right sides, and a W-bottom bag is used as the bag body to be adhered to the inside of the outer body. , by folding the outer body along the folding line and adhering the outer body and the bag appropriately, the outer body and the bag are assembled into a rectangular shape along the four vertical folding curves. Together with the bag body, it is formed like a container with a single layer structure.
Furthermore, the canopy and bottom lids on both left and right sides can be folded inward without having to be folded outward.
In addition, the front and back canopies and bottom lids that are connected to these can be folded inward, and the mouth edge of the bag body can be glued to allow the canopy and bottom lids to be folded in at once.

In addition, the present invention makes the width of the upper edge of the canopy of the front trunk and the back trunk slightly larger than the width of the transverse bending curve at the border between the canopy and the side wall, so that the bag body can be folded when forming the canopy. The opening edges are pulled toward the canopy portions of the larger front body portion and back body portion, and the folded tips of the bags located on the other canopy portion sides are folded in parallel without overlapping.

〔Example〕

Hereinafter, three examples of the container of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a developed view of an outer body showing a first embodiment of the container of the present invention.

The container of the present invention in this embodiment has an outer body 1
and a bag body 2.

As shown in FIG. 1, the outer body 1 is made of a flat plate such as cardboard, and the flat plate has four vertically folded curves 30.
are applied in the transverse direction (that is, the axial direction of the outer body 1 when the outer body 1 is assembled into a box shape) to form a front body part 10, a right side body part 11, a back body part 12, and a left side body each having the same width. The body portion 13 and the gluing allowance 14 located at one end of the body portions (the left side body portion 13) are formed, and two horizontal folding curves 31 are formed on the flat plate along with the four vertical folding curves 30. Canopy parts 100, 110, 120, 130, side wall parts 101, 111, 121, 131, bottom lid part 10
2, 112, 122, and 132 are formed into four pieces each. The four canopy parts 100, 110, 12
The width of the upper edge of the canopy parts 100, 120 of the front body part 10 and the back body part 12 which face each other within 0.0, 130 is determined by
The width of the transverse bending curve 31 at the border with 121 is made slightly larger than the width of the upper edge of the other adjacent canopy parts 110 and 130. Then, the canopy parts 100, 110, 12
The vertical bending curve 30 at 0,130 is as shown in the figure.
In the side wall portions 101, 111, 121, 131 and the bottom lid portions 102, 112, 122, 132,
This means that it is bent with respect to the vertical bending curve 30.
Perforation 4 from the upper edge of the canopy part 100 on the front body part 10 side of the canopy parts 100, 120 having a wide upper edge.
Each body part 10, 11, 12, 13 has a height through 0
and the width is equal to about half of the width of the canopy part 10.
A cover part 103 having a width equal to 0 is provided in series, and a perforation 41 is provided in the cover part 103 parallel to the perforation 40 and having a width equal to the width of the mouth edge 26 of the bag body 2, which will be described later. . The four pieces of canopy part 10
0, 110, 120, 130 and the height of the four bottom lid parts 102, 112, 122, 132 is about half the width of each body part 10, 11, 12, 13. Note that the heights of the canopy parts 100 and 120 of the front body part 10 and the back body part 12 are the same as those of the side body parts 11 and 1.
If the width is made slightly smaller than half of the width of No. 3, there is no risk of folding the mouth edge 26 of the bag body 2 when forming the canopy, and the bottom lids of the front body part and the back body part 12 are Slightly increasing the height of the sections 102, 122 is convenient for forming the bottom. canopy parts 110, 130 of the left and right side body parts 11, 13;
A folding line 32 is provided at the center of the side wall portions 111, 131 and the bottom cover portions 112, 132, and the canopy portion 11
0 and 130 and the bottom cover parts 112 and 132, and a folding line 34 for opening is provided on the canopy parts 100 and 120 of the front body part 10 and the back body part 12. And the canopy part 100 of the outer body 1,
110, 120, 130 upper edge first adhesive part 5
1, the second adhesive part 52 at the end of the canopy part 100 and the side wall part 101 of the front body part 10, and the front body part 10.
and side wall portions 101 and 121 of back body portion 12
The third adhesive part 53 on the lower edge of and the body part 1 on both left and right sides.
The fourth adhesive part 54 of the lower part of the side wall parts 111, 131 (the part above one mountain fold curve 22 of the folding part 20 of the bag body 2, which will be described later), and the cover part 10
a fifth adhesive part 55 at the tip from the perforation 41 of No. 3;
Bottom lid part 102 of front body part 10 (or back body part 1
The sixth adhesive part 5 on the back side of the tip of the bottom lid part 122) of No. 2
Apply adhesive to 6.

On the other hand, the bag body 2 is a square bottom bag, as shown in FIGS. 2a and 2b, and is made of polyethylene from inside.
1 consisting of paper, adhesive, and aluminum foil, or 1 consisting of polyethylene thin film, aluminum foil, adhesive, and paper.
A folded portion 20 is formed by folding a sheet into a W-shape, and seals 21 are applied to both left and right sides of the sheet, and both left and right sides of both ends of one mountain fold curve 22 of the folded portion 20 are applied. Seal part 21
The two valley fold curves 2 of the folded portion 20 from the intersection with
A seal 24 is applied to each of the sections up to 3. Then, the seal portions 21 on both the left and right sides
The inner width A ₂ of the entire body 10,1 of the outer body 1
1, 12, and 13 is one half of the width _A1 , and each folding width B2 from one mountain fold curve 22 to two valley fold curves 23 of the folding portion 20 is set as the width _B2 of each of the outer body 1. Width of body parts 10, 11, 12, 13 B ₁ of 2
The width C ₂ of the bottom side 25 between the two intersections of the two valley fold curves 23 with the sealing part 24 of the folding part 20 is calculated as
The width B of 2 is equal to ₁ , and the two valley fold curves 23
and the height H ₂ to the edge of the mouth edge 26 facing it
The canopy parts 100, 110, 120, 1 of the outer fuselage 1
30 height and side wall portions 101, 111, 121, 1
The sum of the heights of 31 and 1 is slightly larger than H ₁ . Then, the left and right side seal portions 21 are used as knob margin portions.

The first adhesive part 51 and the third adhesive part 51 of the outer body 1 thus formed
The upper and lower parts of one surface of the bag body 2 are attached to the adhesive portion 53 and the fourth adhesive portion 54, and the grip margin portions (left and right side seal portions) 21 of the bag body 2 are attached to the left and right body portions 11 of the outer body 1. and 13 canopy parts 110, 130,
The side walls 111 and 131 are arranged so that they project slightly outward from the fold line 32 of the center line, and the mouth edge 26 of the bag body 2 projects slightly from the upper edge of the canopy 100, 110, 120, 130 of the outer body 1. Glue to. Next, the front body part 10, right side body part 11, and left side body part 13 of the outer body 1 are folded inward along the folding line 32 together with the tab margin 21 of the bag body 2, and the outer body 1
The adhesive portion 14 is bonded to the second bonding portion 52 of.

The container of the present invention in this embodiment has the above-described structure, and is assembled and filled with liquid and sealed as described below.

That is, the folding lines 32 of the left and right side body parts 11 and 13 are pressed inward, and the outer body 1 is first assembled into a regular square prism shape along the four vertical folding curves 30. Then, the bag body 2 glued to the inside of the outer body 1 expands into a regular square prism shape together with the outer body 1, and this outer body 1
The bag body 2 is completely and precisely formed into a square, just like a container with a single layer structure. At this time, since the bag 2 is a square bag with a bottom that is folded into a W-shape, the bottom of the bag 2 is completely and accurately formed into a regular square.

Next, the bottom lid portions 112 of the left and right body portions 11, 13,
132 along the horizontal folding curve 31 and the folding curve 33, and fold the bottom cover parts 102, 122 of the front body part 10 and the back body part 12 along the horizontal folding curve 31, and Lid part 122
The sixth adhesive part 56 of the bottom cover part 102 of the front body part 10
Glue to form the bottom. Then, the contents are filled into the opened bag body 2, and the left and right body parts 11, 13 are
The canopies 110 and 130 of the bag body 2 are folded in along the transverse folding curve 31 and the folding curve 33, and the tab portion 21 of the bag body 2 is folded inward in a V-shape, and the canopies of the front body part 10 and the back body part 12 are folded. Part 10
0 and 120 along the horizontal folding curve 31, and sealing the mouth edges 26 of the bag body 2 that slightly protrude from the canopy parts 100 and 120 to each other to seal the bag body 2,
The fifth adhesive part 55 of the cover part 103 is adhered to the canopy part 120 of the back body part 12 to cover the mouth edge part 26 of the bag body 2 and also to cover the canopy parts 100, 110, 120, 130.
A container is formed by forming the container into a flat surface.

As described above, in the container of the present invention in this embodiment, the canopy part 11 of the left and right side body parts 11, 13 is
By folding 0, 130 and the bottom lid parts 112, 132 inward, the canopy parts 100, 120 and bottom lid parts 102, 122 of the front body part 10 and back body part 12, which are connected to them, are folded inward at the same time. , which form the top and bottom parts of the container, can be assembled using assembly machines for assembling roof-shaped milk containers that are widely used today.

When opening a container that has been filled with liquid and sealed as described above, as shown in FIG. The mouth edge 26 of No. 2 is exposed. Next, the canopies on the opening side of the outer body 1, that is, the canopies 100, 120, 130 of the front body 10, the back body 12, and the left side body 13, are folded together with the mouth edge 26 of the bag body 2. Curve 33 and opening folding line 34
The bag body 2 opens left and right along the
When the tab 21 located at the center of the mouth edge 26 of the bag body 2 is pinched and pulled outward, the adhesive portion of the mouth edge 26 of the bag body 2 is peeled off and the injection port is opened. At this time, the canopy part 1 of the front body part 10 and the back body part 12
The width of the upper edge of 00,120 is the width of the canopy part 100,
120 and the side wall parts 101, 121, and the width of the upper edge of the other canopy parts 110, 130, so that the mouth edge part 26 of the bag body 2 has a width when forming the canopy. The front body part 10 and the back body part 12, which have a large diameter, are pulled toward the canopy parts 100, 120, and therefore, the tab portions 21 on both sides of the bag body 2, which are located on the other canopy parts 110, 130, are pulled. It is folded in a stretched state, that is, in a state in which the folded tips of the tab margin portions 21 are parallel to each other and do not overlap. Therefore, the injection port can be easily opened by simply pinching the grip portion 21 and pulling it outward.

Moreover, in this embodiment, the bag body 2 is glued to the inside of the box-shaped outer body 1, and the contents are filled and sealed in the bag body 2, so that the bag body 2 is not like a conventional simple cardboard container. Penetration and leakage of contents can be prevented without special processing. Also,
Even if the high-temperature sterilized contents are filled into the bag body 2 at high temperature, the canopy parts 100, 110, 12 of the bag body 2
The outer fuselage 1 is not deformed except that the peripheral part of the transverse bending curve 31 at 0.130 is dented by the suction pressure, and therefore the outer fuselage 1
There is no need to use paper that is thicker than necessary (thick enough to stand on its own).

Moreover, in the above-mentioned embodiment, the canopy part 100,
Since the items 110, 120, and 130 can be folded flat, they can be stacked as they are, and the storage space for the products can be kept to a minimum. Moreover, since the portion corresponding to the spout is covered with the cover portion 103, it is hygienic.

In the above-mentioned embodiment, the gripping allowance 21 is provided on both sides of the bag 2, but the gripping allowance 21 may be provided on one side of the bag 2.

Further, the outer body in the above embodiment is used when the steps of forming the bottom, filling the contents, and sealing the mouth edge of the bag go straight, and as shown in FIG. 4, the front body 10 and Bottom lid part 1 of back body part 12
The outer body 1, which has folding lines 33 at 02 and 122, is used when the bottom is formed in a rotary manner, the contents are filled, and the mouth edge of the bag is sealed in a straight line.

In the above-mentioned embodiment, the outer body forms a regular rectangular column in which the widths of the front body parts 10, 11, 12, and 13 are equal; however, as shown in FIG.
The width of the back body part 12 may be made larger than the width of the left and right body parts 11 and 13, and the outer body may form a rectangular column.

〔Effect of the invention〕

As is clear from the above, the present invention has a roof-shaped milk container as its basic shape, and the top and bottom lids of the outer body are connected to each other on the front, back, and both left and right sides.
In addition, a W-bottomed bag is used as the bag to be adhered to the inside of the outer body, and the outer body is folded along the folding line and the outer body and the bag are appropriately adhered. When the body is assembled into a rectangular shape, the outer body and bag body are integrated to form a container with a single layer structure, and the canopy and bottom lid on both left and right sides can be folded down inside without folding outward. In addition, the front and back canopies and bottom lids that are connected to them can be folded inward, and the opening edges of the bag body can be glued together to form the canopy and bottom lids of the container at once. Can be folded. Therefore, it can be assembled using assembly machines for assembling roof-shaped milk containers that are widely used today.

In addition, in the present invention, the width of the upper edge of the canopy of the front trunk and the back trunk is made slightly larger than the width of the transverse bending curve at the border between the canopy and the side wall. The edges are pulled toward the canopy part side of the front body part and the back body part, which have larger widths, and the folded tips of the bags located on the other canopy part side are folded in parallel without overlapping. Therefore, there is a risk that the folded tips of the mouth edge of the bag overlap, resulting in poor adhesion due to the difference in thickness of the bag, and that it becomes impossible to pull out and form the injection port. There isn't. Therefore, the spout can be easily opened by simply pinching the grip portion of the bag and pulling it outward.

Note that, as a matter of course, the container of the present invention is not limited to the above-mentioned embodiments.

[Brief explanation of the drawing]

1 to 3 show a first embodiment of the container of the present invention, FIG. 1 is a developed view of the outer body, FIG.
b is a front view and perspective view of the bag; Figure 3 a, b, c,
d is an explanatory diagram showing the opening order. FIG. 4 is a developed view of an outer body showing a second embodiment of the container of the present invention. FIG. 5 is a developed view of an outer body showing a third embodiment of the container of the present invention. 1... Outer body, 10... Front body, 11... Right side body, 12... Back body, 13... Left side body, 14...
Glue allowance part, 100, 110, 120, 130... Canopy part, 101, 111, 121, 131... Side wall part, 102, 112, 122, 132... Bottom cover part,
2...Bag body, 21...Knob allowance, 30...Vertical folding curve,
31... Horizontal bending curve, 32... Folding line, 33... Folding line for folding, 34... Folding line for opening, 51, 52, 53,
54, 55, 56...Adhesive portion.

Claims (1)

[Claims] 1. Consisting of a box-shaped outer body and a bag adhered to the inside of the outer body, the outer body is made of a shape-retaining flat plate, and the flat plate has four vertical bars. Forming a front body part and a back body part by applying a folding line, left and right body parts that are alternately adjacent to the front body part and the back body part, and a gluing allowance located at one end of these body parts, A folding line is provided at the center of the left and right side body portions parallel to the four vertical folding curves, and two horizontal folding curves are provided on the flat plate.
A canopy part, a side wall part, and a bottom lid part are formed in four pieces each at right angles to the vertical folding curve and the two folding lines of the book, and the front body part and the inner part of the four canopy parts facing each other are formed. The width of the upper edge of the canopy on the back body is made slightly larger than the width of the horizontal folding curve at the border between the canopy and the side wall, and the height of the canopy on the front and back body is made slightly larger than that of the side body. The width of the side wall portion is approximately 1/2, and the bag body is made by folding a sheet-like material into a W shape and sealing both sides, and the width of the inside of both side seal portions is approximately 1/2. It is approximately equal to half the width of the entire body of the outer fuselage, and its height is slightly longer than the sum of the height of the canopy part and the height of the side wall part of the outer fuselage when the outer fuselage is assembled into a box shape. A knob allowance is provided on at least one of the left and right side seal parts, and the upper and lower parts of the bag are attached to the upper edge of the canopy and the lower part of the side wall of the outer body. Glue the bag so that the tab margin is located approximately at the center of the side body of the outer body and the mouth edge of the bag slightly protrudes from the upper edge of the canopy of the outer body, and attach the outer body to the two A container characterized in that the outer body is folded along the folding line, and the adhesive portion of the outer body is glued to the other end of the body.