JP2021054458A - Paper container with zipper, blank plate thereof, and manufacturing method thereof - Google Patents

Abstract

To provide a paper container with a zipper and a blank plate of the paper container with the zipper capable of reducing damage (crack) to a laminate of the paper container that may be caused when the protrusions (ears) connected to the right and left ends of the top of the rectangular parallelepiped paper container with the zipper is bent.SOLUTION: Ear portions of a blank plate 95 of a paper container with a zipper is subjected to processing for facilitating bending, thereby, easily forming the ear portions into a desired shape, so that excessive stress is not applied to a bent portion. Further, the bent portion of the ear portion has an obtuse angle or a curved portion.SELECTED DRAWING: Figure 6

Description

The present invention relates to a paper container with a chuck, and particularly in the field of a paper container having a three-dimensional shape and having self-supporting property, the laminated sheet on the top surface protruding portion (ear portion) is less likely to be damaged. Regarding a paper container with a zipper that can maintain its beauty.

Conventionally, a technique such as Patent Document 1 has been disclosed as a paper container with a chuck. That is, a chuck is provided on the upper part of the rectangular parallelepiped paper container, and the chuck can be opened when the contents are taken out and closed when the contents are taken out.
With the above technique, it is possible to protect the contents and prevent the contents from spilling when the paper container falls. Moreover, since it is a paper container, it is easy to reduce the volume of the container after consuming the contents and dispose of it. FIG. 1 shows a blank plate 95 used for manufacturing a paper container 90 with a chuck of the prior art, and FIG. 2 shows a perspective view of the paper container 90 with a chuck of the prior art.
Unless otherwise specified in the future, the front, back, left, right, top and bottom of the paper container 90 with a zipper shall be shown with the front wall plate 31b as the surface, with reference to FIG.

However, in the conventional paper container 90 with a chuck described in Patent Document 1, when the top surface edge protrusion (ear portion) 74 is bent downward (toward the body portion) and joined to the body portion 72, Damage to the bent portion 76 of the top surface protrusion (ear) 74, which is interposed between the top surface protrusion (ear) 74, the front surface plate 33b, and the front surface upper stacking plate 34b. (Cracks) 82 may occur. (See FIGS. 3, 4, and 5).

This is because the upper part of the paper container 90 with a chuck of the prior art is joined to the inner surfaces of the upper overlapping plates 34a and 34b to seal the container, so that the number of laminated parts is large and the thickness is thick. Because it becomes.
Further, since the chuck tape 61 is also bonded to the upper stacking plates 34a and 34b, the number of laminated portions of the portion is increased, and the thickness of the portion is further increased.

In addition, in FIGS. 4 and 5, the cross section of the blank plate 95 of the paper container 90 with a chuck of the prior art is shown in one layer, but the layer structure of the blank plate 95 is a laminated body having multiple layers. However, in the present specification, the figures are described in one layer for easy viewing. The same applies to the subsequent cross-sectional views.

When the top surface ridge projecting portion (ear portion) 74 is strongly bent in the direction of the body portion 72 (bending at a substantially right angle), the top surface ridge protrusion portion (ear portion) 74, the front surface ridge upper stacking plate 34b and The outer surface of the bent portion 76 of the top surface protrusion (ear portion) 74, which is interposed between the front surface plate 33b, is in a state of being strongly stretched, and as shown in FIGS. 4 and 5, Damage (cracks) 82 may occur on the laminated sheet 81 (reference numerals omitted in the drawing) of the paper container 90 with a chuck.
In addition, the illustrated damage (crack) shows an example of damage, and the mode of damage is not bound by these.

FIG. 3 is a plan view of the paper container 90 with a chuck of the prior art, and the position of the cross section of FIGS. 4 and 5 (details will be described in the lower part) will be described. FIG. 4 is a cross-sectional view of the position where the upper stacking plates 34a and 34b are tilted near the central portion in the depth direction of the paper container 90 with a chuck of the prior art, and the cut surface is a cross section shown in FIG. It is shown by the position AA of. Further, FIG. 4 is an enlarged cross-sectional view of the bent portion 76 of the top surface protruding portion (ear portion) 74 in the cross-sectional view in the horizontal direction. The outermost layer of the paper container 90 with a chuck of the prior art, the front surface upper stacking plate 34b, is cracked. Further, the upper layering plate 34a on the back side, which is the inner side, may be damaged.
Further, the description of the position of the cross section in FIG. 3 is also used as a reference for the description of the cross section in the embodiment of the present invention.

FIG. 5 is a longitudinal cross-sectional view of the chuck tape 61 at the position of the chuck tape 61 provided in the paper container 90 with a chuck of the prior art. Further, FIG. 5 is an enlarged cross-sectional view of the bent portion 76 of the top surface protruding portion (ear portion) 74, and the cut surface is shown at the position BB of the cross section shown in FIG. The outermost layer of the paper container 90 with a chuck of the prior art, which is the laminated sheet 81, has cracks in the upper laminated plate 34b.

The angles θ shown in the drawings of FIGS. 4 and 5 are the top stacking plate 34b of the top surface of the paper container 90 with a chuck of the prior art and the projecting portion (ear portion) 74 of the top surface. It shows the angle formed by and, and shows the angle formed by each outer surface. Hereinafter, the angle θ described has the same meaning in the paper container 90 with a chuck of the present invention.

In most of the laminated sheets 81 of the paper container 90 with a chuck, a paper base material layer and a synthetic resin film layer are laminated, and cracks are likely to occur in the paper base material layer having inferior tensile strength among its constituent elements. In particular, when the stretching is strong, cracks may also occur in the inner synthetic resin film layer.

When the synthetic resin film layer is cracked, the barrier property (oxygen, water vapor, etc.) of the laminated sheet 81 may be lowered. In particular, when the synthetic resin film layer itself has a barrier property, or when the synthetic resin film layer is subjected to a vapor deposition process, a decrease in the barrier property may be observed.

In addition, damage to the laminated sheet 81 causes deterioration in aesthetics, and if the laminated sheet 81 is printed, the characters and patterns displayed by the printing may be damaged.

Japanese Unexamined Patent Publication No. 2005-178833

The present invention has been made to solve the above-mentioned problems, and the problem is that in the paper container 90 with a chuck, the protruding portion (ear portion) 74 on the top surface is formed with the paper container 90 with a chuck. When it is bent in the direction of the body portion 72 and joined to the body portion 72, the top surface is between the protruding portion (ear portion) 74 and the front surface plate 33b and the front surface upper stacking plate 34b. Provided are a paper container 90 with a chuck, which is less likely to cause damage (cracking) to the bent portion 76 of the protruding portion (ear portion) 74 on the top surface, and a blank plate 95 of the paper container 90 with a chuck.

The above problems can be solved by the following embodiments of the present invention.
That is, the blank plate 95 of the paper container 90 with a chuck according to the embodiment of the present invention
A blank plate 95 of a paper container 90 with a zipper made of a laminated sheet 81 having paper as a base material layer, and a side surface seal allowance 36 is provided at the left and right edge portions of the blank plate 95 as a first vertical bending line. Formed in 11
The upper overlapping plates 34a, 34b, top plates 33a, 33b, and walls are symmetrically formed above and below the intermediate horizontal bending line 21 with the intermediate horizontal bending line 21 in the middle portion in the vertical direction of the blank plate 95 as the center, respectively. The face plates 31a and 31b and the bottom plates 35a and 35b are sequentially provided.
The upper overlapping plates 34a and 34b and the top plate 33a and 33b are connected to each other via first lateral bending lines 22a and 22b that cross the blank plate 95 in the lateral direction.
The top plates 33a and 33b and the wall plates 31a and 31b are connected to each other via second lateral bending lines 23a and 23b that cross the blank plate 95 in the lateral direction.
The wall surface plates 31a and 31b and the bottom plate 35a and 35b are continuously provided via third lateral bending lines 24a and 24b that cross the blank plate 95 in the lateral direction.
Side plates 32a and 32b are connected to the left and right of the wall plates 31a and 31b, respectively, via a second vertical bending line 12 that vertically traverses the blank plate 95.
When the upper overlapping plates 34a and 34b are half-folded along the intermediate horizontal folding line 21, they are joined to the easy-opening processing lines 51a and 51b at positions where they are expected to overlap each other as a lateral opening means. The portions 52a and 52b are sequentially provided from the intermediate horizontal bending line 21.
The top surface plates 33a and 33b are connected in the lateral direction to the blank plate 95, and the top surface plate protrusions (ears) allowances 38a and 38b and / or the upper overlapping plates 34a and 34b are connected in the lateral direction. It is characterized in that at least one of the side plates 43a and 43b of the upper overlapping plate to be provided is easily bent.

Further, the blank plate 95 of the paper container 90 with a chuck according to the embodiment of the present invention
Of the top plates 33a and 33b, the back side of the top plate 33a on the back side of the paper container 90 with a chuck is connected to the blank plate 95 in the lateral direction. In the selvage 38a, of the region divided by the diagonal fold line 13 on the top surface, the one closer to the upper stacking plate 34a, the upper stacking plate is the back and the top surface is the protruding portion ( The selvage) 38a-1 will be referred to as the first selvage, and of the first selvage 38a-1.
Alternatively, among the top plates 33a and 33b, the front surface of the chucked paper container 90 is on the front side, and the front surface of the top surface plate 33b is connected in the lateral direction to the front surface of the blank plate 95. In the portion (ear portion) allowance 38b, of the regions where the top surface is divided by the diagonal fold line 13, the one closer to the upper stacking plate 34b of the front surface is the top surface of the upper stacking plate. The protrusion (ear) allowance 38b-1 is hereafter referred to as the second ear allowance, and among the second ear allowance 38b-1.
At least one of the easy bending bending lines 26a and 26b may be provided in at least one of the first ear portion 38a-1 and the second ear portion 38b-1.

Further, the blank plate 95 of the paper container 90 with a chuck according to the embodiment of the present invention
Of the top plates 33a and 33b, the back side of the top plate 33a on the back side of the paper container 90 with a chuck is connected to the blank plate 95 in the lateral direction. In the selvage) allowance 38a, of the regions where the top surface is divided by the diagonal fold line 13, the side plate closer to the side plate 32a is the back side and the top surface is the protrusion (ear part) 38a. -2 will be referred to as the third ear charge from now on, and among the third ear charges 38a-2,
Alternatively, among the top plates 33a and 33b, the front surface of the chucked paper container 90 is on the front side, and the front surface of the top surface plate 33b is connected in the lateral direction to the front surface of the blank plate 95. In the portion (ear portion) allowance 38b, among the regions where the top surface is divided by the diagonal fold line 13, the side plate closer to the side plate 32b is the front surface and the top surface is the protrusion (ear portion). The generation 38b-2 will be referred to as the fourth ear charge from now on, and among the fourth ear charges 38b-2,
At least one of the easy bending bending lines 27a and 27b may be provided in at least one of the third ear portion 38a-2 and the fourth ear portion 38b-2.

Further, the blank plate 95 of the paper container 90 with a chuck according to the embodiment of the present invention
Of the regions of the side plates 43a and 43b of the upper stacking plates, which are the lateral ends of the upper stacking plates 34a and 34b of the blank plate 95, at least one side plate 43a of the upper stacking plate. , 43b may be provided with at least one easy-bending bending line 28a, 28b.

The chucked paper container 90 according to the embodiment of the present invention is a chucked paper container 90 formed by assembling the blank plates 95 described above.
When half-folded along the intermediate horizontal bending line 21, the chuck tape 61 is joined to the laminated sheet at the position where the chuck tape joining portions 52a and 52b are to overlap.
Further, the side surface seal allowances 36 on both sides that face each other when half-folded along the intermediate horizontal bending line 21 are joined.
The upper overlapping plates 34a and 34b that are overlapped are left behind, and the lower portion thereof is spread back and forth by the first horizontal bending lines 22a and 22b, and the upper overlapping plates 34a and 34b that are overlapped stand up. A top portion 71 formed by the top plates 33a and 33b and a body portion 72 having a rectangular cross section, which is connected to the lower portion of the top portion 71, are formed under the top plates 33a and 33b.
The standing upper overlapping plates 34a and 34b are bent to the back side and laid down, and the top surface protruding portion 74 protruding on both the left and right sides is bent by the body 72 to form the top surface. The ridge protrusion 74 is joined to the body portion 72, and is joined to the body portion 72.
The bottom portion 73 connected to the lower portion of the body portion 72 may be closed.

Further, the paper container 90 with a chuck according to the embodiment of the present invention
The angle of the bent portion 76 generated when the top surface protruding portions 74 connected to the left and right sides of the top portion 71 of the chucked paper container 90 are joined to the body portion 72 of the chucked paper container 90. θ may be an obtuse angle.

Further, the paper container 90 with a chuck according to the embodiment of the present invention
The angle θ of the bent portion 76 generated when the top surface protruding portion 74 is joined to the body portion 72 of the paper container 90 with a chuck may be 100 ° or more and 160 ° or less.

Further, the paper container 90 with a chuck according to the embodiment of the present invention
The bent portion 76 generated when the top surface protruding portion 74 connected to the left and right sides of the top portion 71 of the chucked paper container 90 is joined to the body portion 72 of the chucked paper container 90 is formed. It may be bent at a curve.

Further, the paper container 90 with a chuck according to the embodiment of the present invention
The radius of curvature R of the bent portion 76, which is generated when the top surface protruding portion 74 is joined to the body portion 72 of the paper container 90 with a chuck, may be 1 mm or more and 10 mm or less.

Further, the paper container 90 with a chuck according to the embodiment of the present invention
The wall surface plates 31a and 31b and the bottom plate 35a and 35b are continuously provided via third lateral bending lines 24a and 24b that cross the blank plate 95 in the lateral direction.
The bottom plate 35a, 35b and the bottom edge seal allowances 37a, 37b, which are the upper and lower edge portions of the blank plate 95, form a fourth lateral bending line 25a, 25b that crosses the blank plate 95 in the lateral direction. It is connected through
The bottom surface wa seal allowances 37a and 37b are joined to each other in the form of a gassho seal, and the joined bottom surface wa seal allowances 37a and 37b are bent to the back side and laid down, and the bottom surface protrusions protruding to both left and right sides. The bottom plates 35a and 35b may be bent and joined to the 75.

Further, the method for manufacturing the paper container 90 with a chuck according to the embodiment of the present invention is as follows.
A paper container 90 with a zipper formed by assembling the blank plate 95 made of a laminated sheet using paper as a base material, and a side surface seal allowance 36 is provided on the left and right edge portions of the blank plate 95. Formed by the first vertical bending line 11
The upper overlapping plates 34a, 34b, top plates 33a, 33b, and walls are symmetrically formed above and below the intermediate horizontal bending line 21 with the intermediate horizontal bending line 21 in the middle portion in the vertical direction of the blank plate 95 as the center, respectively. The face plates 31a and 31b and the bottom plates 35a and 35b are sequentially provided.
The upper overlapping plates 34a and 34b and the top plate 33a and 33b are connected to each other via first lateral bending lines 22a and 22b that cross the blank plate 95 in the lateral direction.
The top plates 33a and 33b and the wall plates 31a and 31b are connected to each other via second lateral bending lines 23a and 23b that cross the blank plate 95 in the lateral direction.
The wall surface plates 31a and 31b and the bottom plate 35a and 35b are continuously provided via third lateral bending lines 24a and 24b that cross the blank plate 95 in the lateral direction.
Side plates 32a and 32b are connected to the left and right of the wall plates 31a and 31b, respectively, via a second vertical bending line 12 that vertically traverses the blank plate 95.
When the upper overlapping plates 34a and 34b are half-folded along the intermediate horizontal folding line 21, they are joined to the easy-opening processing lines 51a and 51b at positions where they are expected to overlap each other as a lateral opening means. The portions 52a and 52b are sequentially provided from the intermediate horizontal bending line 21.
The wall surface plates 31a and 31b and the bottom plate 35a and 35b are continuously provided via third lateral bending lines 24a and 24b that cross the blank plate 95 in the lateral direction.
The bottom plate 35a, 35b and the bottom edge seal allowances 37a, 37b, which are the upper and lower edge portions of the blank plate 95, form a fourth lateral bending line 25a, 25b that crosses the blank plate 95 in the lateral direction. It is connected through
The top surface plates 33a and 33b are connected in the lateral direction to the blank plate 95, and the top surface plate protrusions (ears) allowances 38a and 38b and / or the upper overlapping plates 34a and 34b are connected in the lateral direction. At least one of the side plates 43a and 43b of the upper overlapping plate to be provided is easily bent.
The step of forming the bottom surface into a folded shape in the intermediate stage in which the sealing allowances 37a and 37b are opened without sealing.
The contents are filled from the bottom 73 of the paper container 90 with a chuck in the intermediate stage of opening, and the bottom surface seal allowances 37a and 37b are joined to each other in the form of a gassho seal, and the joined bottom surface is a seal allowance 37a. , 37b is bent to the back side and laid down, and the bottom surface protruding portions 75 projecting on both the left and right sides are bent and joined to the bottom surface plates 35a and 35b.

According to the embodiment of the present invention as described above, the top surface protruding portions (ears) 74 connected to the left and right sides of the top portion 71 of the chucked paper container 90 are formed on the body of the chucked paper container 90. When the top surface of the protrusion (ear) 74 is joined to the portion 72, the top surface of the protrusion (ear) 74 can be easily bent to form a desired shape. The surface of the folded portion 76 that becomes the outer surface is not strongly stretched, and it is possible to reduce the occurrence of damage (crack) 82 to the bent portion 76 of the laminated sheet 81 of the paper container 90 with a chuck.

It is a development view of the blank plate used for manufacturing the paper container with a chuck of embodiment of the prior art. It is a perspective view of the paper container with a chuck of the prior art. It is a top view of the paper container with a chuck of the prior art. It is an enlarged cross-sectional view of the bent part at the position of the upper stacking plate of the top surface protruding part (ear part) of the paper container with a chuck of the prior art. (See FIG. 3 cross section AA). It is an enlarged cross-sectional view of the bent part at the chuck tape joint position of the top surface protruding part (ear part) of the paper container with a chuck of the prior art. (See FIG. 3, cross section BB). It is a developed view of the blank plate used for manufacturing the paper container with a chuck of the 1st Embodiment of this invention. It is a front view which shows the shape of the paper container (planar state) of the intermediate stage when the paper container with a chuck is manufactured using the blank plate shown in FIG. It is a perspective view which shows the shape of the paper container (boxing state) of the intermediate stage at the time of making the paper container with a chuck by using the blank plate shown in FIG. It is a perspective view of the paper container with a chuck of the 5th Embodiment of this invention. It is a developed view of the blank plate used for manufacturing the paper container with a chuck of the 2nd Embodiment of this invention. It is a developed view of the blank plate used for manufacturing the paper container with a chuck of the 3rd Embodiment of this invention. It is a developed view of the blank plate used for manufacturing the paper container with a chuck of the 4th Embodiment of this invention. It is a developed view of the blank plate used for manufacturing the paper container with a chuck which performed all the easy bending bending lines of the 2nd embodiment, the 3rd embodiment, and the 4th embodiment of the present invention. It is a front view of the paper container with a chuck of the 6th Embodiment of this invention. It is an enlarged cross-sectional view of the bent portion of the top surface protruding portion (ear portion) of the paper container with a chuck of the sixth embodiment of the present invention. (See FIG. 3 cross section AA). It is a front view of the paper container with a chuck of the 8th Embodiment of this invention. 8 is an enlarged cross-sectional view of a bent portion of a protruding portion (ear portion) on the top surface of a paper container with a chuck according to an eighth embodiment of the present invention. (See FIG. 3 cross section AA).

Hereinafter, the present invention will be described with reference to the drawings. However, the present invention is not limited to these concretely shown forms and various concretely described structures.
In each figure, the size and ratio of the members may be changed or exaggerated for the sake of clarity. In addition, for the sake of readability, unnecessary parts for explanation and repeated codes may be omitted.

FIG. 6 shows a blank plate 95 of a paper container 90 with a chuck according to the first embodiment of the present invention.
Unless otherwise specified in the future, the top, bottom, left, and right of the blank plate 95 will be shown with reference to FIG. Further, the front surface of FIG. 6 is my inner surface, and the outer surface and the back surface of the paper container 90 with a chuck are my inner surface.

The blank plate 95 of the paper container 90 with a chuck of the present invention has a rectangular outer shape using a laminated sheet 81 in which a base paper is laminated on at least an intermediate layer and at least a thermosetting resin such as polyethylene is laminated as an innermost layer. The first vertical bending line 11, the second vertical bending line 12, and the intermediate horizontal bending line 21, the first horizontal bending lines 22a, 22b, and the first horizontal bending lines 22a and 22b, which are formed into a shape and exist in the longitudinal direction. Two horizontal bending lines 23a and 23b, third horizontal bending lines 24a and 24b, fourth horizontal bending lines 25a and 25b, a top surface diagonally bent line 13, and a bottom surface diagonally bent line 14 are provided with a chuck. The forming plates of each part necessary for forming the paper container 90 are partitioned and configured.

That is, the side surface seal allowance 36 is formed by the first vertical bending line 11 at the left and right edge portions of the blank plate 95, and the back surface edge seal allowance 37a is formed at the upper and lower edge portions. The fourth horizontal bending line 25a is formed, and the bottom surface of the front and bottom is formed by the sealing allowance 37b of the fourth horizontal bending line 25b.

Further, the blank plate 95 is provided with forming plates of each part symmetrically above and below the intermediate horizontal bending line (half-folding line) 21. The main part will be described as an intermediate horizontal folding line (half-folding line). On the upper side of the line) 21, the back side upper overlapping plate 34a, the back side top surface plate 33a, the back side wall surface plate 31a, and the back side bottom plate 35a are continuously provided in this order.

Further, in the blank plate 95, below the intermediate horizontal folding line (half-folding line) 21, the front side upper overlapping plate 34b, the front side top surface plate 33b, the front side wall surface plate 31b, and the front side side are The bottom plates 35b are connected in this order.

Further, backside side plates 32a are continuously provided on the left and right sides of the back side wall plate 31a, and front side side plates 32b are continuously provided on the left and right sides of the front side wall plate 31b. Further, on the upper overlapping plates 34a and 34b, when the blank plate 95 is half-folded along the intermediate horizontal folding line (half-folding line) 21, an easy-opening processing line as a lateral opening means is provided at a position where the blank plates 95 overlap each other on both sides. The 51a and 51b and the chuck tape joints 52a and 52b are sequentially provided from the intermediate horizontal bending line (half-folding line) 21.

Further, it is desirable that the easy-opening processed lines 51a and 51b and the chuck tape joint portions 52a and 52b are substantially parallel to the intermediate horizontal folding line (half-folding line) 21.
When the easy-opening processing lines 51a and 51b are substantially parallel to the intermediate horizontal folding line (half-folding line) 21, the paper container 90 with a chuck can be easily cut in the lateral direction.
When the chuck tape joints 52a and 52b are substantially parallel to the intermediate horizontal bending line (half-folding line) 21, the chuck can be easily opened and closed and the contents can be easily taken out.

In this case, the chuck tape joining portions 52a and 52b are planned joining portions of the chuck tape 61, and in the actual joining of the chuck tape 61, the blank plate 95 is half-folded along the intermediate horizontal bending line (half-folding line) 21. When heat-sealing the side surface seal allowances 36 to each other, the male tape body 64 and the female tape body 65 insert the chuck tape 61 fitted at their fitting portions into this portion, and at the same time blank. The outer surface of the plate 95 is known, and the chuck tape joints 52a and 52b are heated and pressurized to be heat-bonded.

The bonding of the chuck tape 61 is not limited to the heat seal as described above, and an adhesive, an adhesive tape, or the like may be used.

Here, the outer surface of the blank plate 95 refers to the surface of the blank plate 95 that is to be the outer surface of the paper container 90 with a chuck when the paper container 90 with a chuck is assembled.

By heat-bonding the chuck tape 61 by such a method, the male tape body 64 and the female tape body 65 are heat-bonded separately as compared with the method of heat-bonding to the chuck tape joint portions 52a and 52b. Since the misalignment is eliminated and the mounting process is simplified, the chuck tape 61 can be mounted with high production efficiency.

The intermediate horizontal fold line (half fold line) 21 provided for half-folding the blank plate 95 may be a fold line with a normal push rule, but opening means on both sides of the intermediate horizontal fold line (half fold line) 21. Since the easy-opening processed lines 51a and 51b are provided, the easy-opening processed lines 51a and 51b (for example, perforations, half-cut lines, etc.) are not broken when the blank plate 95 is half-folded in the manufacturing process. As described above, it is preferable that the fold line is easier to fold, and for that purpose, the cut line portion is long and the joint portion is also squeezed, for example, a fold line called a lead ruled line. It is more preferable to use such a bent line. Further, this cut line may be a half-cut cut line.

By setting the intermediate horizontal folding line (half-folding line) 21 as such a folding line, when the blank plate 95 is half-folded, it may be accidentally bent at the easy-opening processing lines 51a and 51b of the opening means. Since it can be easily and surely folded halfway along the intermediate horizontal folding line (half-folding line) 21, it is possible to reduce the occurrence of defective products due to defective folding positions, and it is possible to bend at high speed and improve production efficiency. be able to.

The intermediate horizontal fold line (half fold line) 21 may be processed into the laminated sheet 81 after lamination in the same manner as other fold lines, but in order to process a deeper (strong) fold line (ruled line processing), , There is a possibility that through holes may occur in the laminated sheet 81.
However, similarly to the easy-opening processed lines 51a and 51b of the opening means, an intermediate horizontal folding line (half-folding line) 21 is provided on the paper base material layer before laminating, and polyethylene or the like is laminated on both sides thereof. , It is possible to prevent deterioration of the sealing property of the paper container 90 with a chuck.

When the intermediate horizontal folding line (half-folding line) 21 is processed into the laminated sheet 81 after lamination, after the blank plate 95 is half-folded, the upper laminated plates 34a and 34b are, for example, the intermediate horizontal folding line (half-folding). The area from the folded portion of the line) 21 or its vicinity to the vicinity of the intermediate horizontal bending line (half-folding line) 21 of the overlapping easy-opening processed lines 51a and 51b (in this embodiment, the perforation line). By heat-sealing with, the sealability of the paper container 90 with a zipper can be maintained, and the easy-opening processed lines 51a and 51b on both sides of the upper stacking plates 34a and 34b can be brought close to each other. The easy-opening processing lines 51a and 51b can be cut out more easily.

Further, when an intermittent half-cut line or a straight half-cut line is used for the easy-open processing lines 51a and 51b of the opening means and the intermediate horizontal folding line (half-folding line) 21 for half-folding, it is usually used. Although it may be formed by the method using a cutting tool, a half-cut line having better accuracy and stability is formed by using a method using laser light irradiation, a method using ultrasonic waves, or a method called diamond cut. be able to.

Further, in order to easily bend the top surface protruding portion (ear portion) 74 to make it easy to form a desired shape, the top surface plates 33a and 33b are connected to the top surface in the lateral direction (horizontal direction) of the blank plates 95. At least one of the side plates 43a, 43b of the upper stacking plates, which are connected in the lateral direction (horizontal direction) of the protrusion (ear) allowances 38a, 38b and / or the upper stacking plates 34a, 34b. The sheet is processed to facilitate bending (easy bending process).

The above-mentioned processing for facilitating bending includes, for example, embossing processing, press processing, half-cut processing, perforation processing, ruled line (folding line) processing, and the like.
The area where the easy bending process described above may be performed is shown by shading in FIG.

As described above, the laminated sheet 81 used for the blank plate 95 has a paper base material layer laminated on at least an intermediate layer, and a thermosetting resin such as polyethylene laminated on both sides of the laminated sheet 81 as an innermost layer and / or an outermost layer. Although the laminated sheet 81 is used, the intermediate layer may be provided with a water vapor, oxygen, other gas barrier layer, a strength improving layer, or the like, if necessary.

Further, when the paper container 90 with a chuck is provided with a printing layer such as a pattern, printing is usually performed on the surface of the paper base material layer, but if the printability of the paper base material layer is not good, for example, a strength improving layer is provided. It is also possible to provide a printing layer such as a pattern on a biaxially stretched polyethylene terephthalate film or the like, and laminate the film between the outermost heat-adhesive resin layer and the paper base material layer.

The paper base material layer is preferably paper that is rigid and does not easily crack when bent by a bending line or the like, but is not particularly limited and is water resistant depending on the contents to be filled in the zippered paper container 90. Appropriate ones can be appropriately selected and used in consideration of the property (size) and the like.
As a specific example, high-quality paper, bleached kraft paper, cup base paper, milk carton base paper and the like can be preferably used, and the basis weight thereof is appropriately in the range of ^{90 to 320 g / m 2.}

As the resin of the heat-adhesive resin layer (sealant layer) of the innermost layer and / or the outermost layer, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), medium density polyethylene (MDPE), and high density are used. Random polyethylene (HDPE), ethylene / α-olefin copolymer polymerized using a single site catalyst, ethylene / vinyl acetate copolymer (EVA), ethylene / acrylic acid copolymer (EAA), ethylene / methacrylic acid Use copolymer (EMAA), ethylene / methyl acrylate copolymer (EMA), ethylene / ethyl acrylate copolymer (EEA), ionomer, polypropylene and its copolymer, polyester resin, etc. From these, suitable ones can be appropriately selected and used according to the contents to be filled and the conditions for storage and use.

Among the above heat-adhesive resins, ethylene / methyl acrylate copolymer (EMA) and ethylene / methacrylic acid random copolymer (EMAA) have various bases and thermal stability during processing such as extrusion coating. Since it is excellent in adhesiveness to materials, low-temperature heat-sealing property, etc., and also in thin film forming property, the outermost heat-adhesive resin layer, which does not require much thickness, is relatively thin, for example, 6 to 10 μm. It is also easy to extrude and coat with a thin thickness, and it is possible to reduce the ratio of plastic materials used, and at the same time, it is possible to obtain an advantage in terms of cost.

The heat-adhesive resin layer of the innermost layer and / or the outermost layer as described above is subjected to easy-adhesive treatment such as anchor coating, corona treatment, and frame (flame) treatment on the laminated surface as necessary. In addition to being able to extrude and coat the resin on top, a heat-adhesive resin can be formed into a film in advance, and the film can be laminated by laminating with a known dry laminate or extruded laminate (sandwich laminate). Can be done.

When the gas barrier layer is laminated on the intermediate layer of the laminated sheet 81, the gas barrier layer is a biaxially stretched polyethylene terephthalate film (hereinafter, referred to as a biaxially stretched polyethylene terephthalate film) in which a metal foil such as an aluminum foil, a metal such as aluminum, silica or alumina or an inorganic oxide is stretched. A vapor-deposited film deposited to a thickness of 20 to 100 nm can be used as a base film such as PET film), biaxially stretched nylon film (hereinafter, ON film), and biaxially stretched polypropylene film (hereinafter, OPP film). .. Alternatively, an ethylene / vinyl acetate copolymer saponified film (hereinafter referred to as EVOH film), a biaxially stretched film of nylon MXD6, a polyacrylonitrile film, and a PET film provided with a coating layer of polyvinylidene chloride, an ON film, and OPP. A film or the like can be used.

It is usually preferable to laminate such a gas barrier layer on the inner surface of the paper base material layer of the intermediate layer in that the gas barrier property can be effectively utilized, but a metal foil such as aluminum or a metal is used for the gas barrier layer. When a vapor-deposited film is used, its metallic feel is also used in the design, so that it can be laminated on the outer surface of the paper substrate layer. The gas barrier layer can be easily laminated by a known dry laminate, extruded laminate (sandwich laminate), or the like.

Further, when a peelable weak seal portion is provided on both the upper and lower sides of the chuck tape 61 or on either side, although not shown in the figure, the blank plate 95 is formed by an intermediate horizontal bending line (half-folding line) 21. Of the upper stacking plates 34a and 34b that are in contact with each other when half-folded, the side surfaces on both sides are weak at a position where the weak seal portion is desired to be provided, for example, on the lower side of the chuck tape 61. When the seal portion is provided, the space between the backside chuck tape joint portion 52a and the backside first lateral bending line 22a, and the front side of the backside chuck tape joint portion 52b and the front side of the front side bending line 22b are provided. On both sides or either side of the space between and, along the chuck tape joints 52a and 52b, in a pattern by means such as gravure printing or flexo printing, an easy-peel heat-adhesive resin or , A resin coating liquid called an anti-heat sealant can be applied, dried, and the portion can be heat-sealed.

The peelable weak seal portion preferably has sealability and can be peeled off with an appropriate force, and its heat seal strength is preferably in the range of 1 to 16 N / 15 mm width.

When the weakly sealed portion is formed of an easy-peel heat-adhesive resin, the easy-peel heat-adhesive resin is, for example, a polyolefin-based resin such as low-density polyethylene or an ethylene-vinyl acetate copolymer. A resin composition obtained by appropriately mixing polystyrene, chlorinated polypropylene, polybutene-1, an inorganic or organic filler, polyethylene wax, fatty acid amide, or the like as an additive can be used as the resin.

As the above-mentioned inorganic or organic filler, powders such as silica, calcium carbonate, talc, kaolin, clay, titanium oxide, alumina, and aluminum hydroxide can be used as the inorganic filler, and in particular, silica powder. Is preferable. Further, as the organic filler, powders such as melamine resin, urea resin, alkyd resin, epoxy resin, acrylic resin, polystyrene, ethylene fluoride resin, and silicone resin can be used.

The content of the additive in the resin composition is preferably in the range of 4 to 40% by mass, and when the content of the additive is less than 4% by mass, the heat seal strength becomes strong and a good weak seal portion ( If (easy peelability) cannot be obtained and the content of the additive exceeds 40% by mass, the heat seal strength becomes too weak, which is not preferable.

The coating amount of the easy-peel thermosetting resin as described above ^{is preferably 2 to 8 g / m 2 and more} preferably 3 to 5 g / m 2 in terms of the coating amount at the time of drying.

When the weak seal portion is formed with an anti-heat sealant, a resin composition obtained by mixing an appropriate amount of a release agent with the resin of the base material can be used as the anti-heat sealant.
For example, ethyl cellulose, cyclized rubber, acrylic resin, etc. can be used as the resin of this base material, and for example, silicone resin, polyethylene wax, soybean lecithin, higher fatty acid amide, etc. are used as the release agent. can do. When the anti-heat sealant is applied, the amount of the anti-heat sealant applied may be small, and the thickness is appropriately in the range of 0.3 to 2 μm.

Here, the easy bending process will be described. In order to make it easier to bend or curve the bent portion 76 of the top surface protruding portion (ear portion) 74 at an obtuse angle, the top surface plates 33a and 33b are continuously provided in the lateral direction (horizontal direction) of the blank plate 95. At least one of the side plates 43a, 43b of the upper overlapping plates 38a, 38b, and / or the upper overlapping plates 34a, 34b, which are connected in the lateral direction (left-right direction). The sheet is processed to facilitate bending (easy bending process). The shaded area in FIG. 6 is an area where easy bending may be performed.
The processing that facilitates this bending includes, for example, embossing processing, press processing, half-cut processing, perforation processing, ruled line (folding line) processing, and the like.

After the laminated sheet 81 is completed, the processing for imparting a bending line to the blank plate 95 (ruled line processing) is performed, and then the laminated sheet 81 is supplied to a machine that manufactures a paper container 90 with a chuck. Alternatively, the ruled line processing may be performed by a machine that manufactures the paper container 90 with a chuck.

As a ruled line processing method, an appropriate method is adopted from known methods such as a platen method and a rotary die method.
Further, the laminated sheet 81 may be cut off before the ruled line processing is performed. Alternatively, the laminated sheet 81 may be rolled and supplied to the ruled line processing process.

Further, a punching process for manufacturing the blank plate 95 by punching the laminated sheet 81 will be described. For the punching step, an appropriate method is selected from known methods such as a platen method and a rotary die method. The blank plate 95 may be formed directly from the roll-shaped laminated sheet 81, or the sheet may be cut into single leaves and then punched.
In addition, the order of ruled line processing and punching processing does not matter. It may be processed at the same time.

Further, the roll-shaped laminated sheet 81 slit to a predetermined roll width is supplied to a machine for manufacturing the chucked paper container 90 and cut in the transverse direction of the roll-shaped laminated sheet 81 to produce a blank plate 95. You may.

FIG. 7 is a front view showing the shape of the chucked paper container (flat state) 91 in the intermediate stage when the chucked paper container 90 is manufactured by using the blank plate 95 shown in FIG. The uppermost portion is formed by a folded portion half-folded by an intermediate horizontal folding line (half-folded line) 21 of the blank plate 95 shown in FIG. 6, and at a position where the chuck tape joint portions 52a and 52b overlap with the half-folded portion in advance. The chuck tape 61 in which the male tape body 64 and the female tape body 65 are fitted is inserted, and the chuck tape joint portions 52a and 52b are heated and pressed from the outer surface of the blank plate 95 for thermal adhesion.

Next, the side surfaces of the left and right edge portions are heat-sealed with each other to form a bag shape in which the lower portion (bottom portion) opens, and the easy-opening processing lines that overlap on the upper side of the chuck tape joint portions 52a and 52b. Notches 77 are provided at both ends of 51a and 51b. The notch 77 may be provided at either end.
In addition, in FIG. 7 and FIG. 8 described later, the display of the region where the easy bending process may be performed shown in FIG. 6 is omitted.

When a crushed portion for facilitating bending is provided in the bent portion of the chuck tape 61, although not shown in the figure, the chuck tape 61 thermally bonded to the chuck tape joint portions 52a and 52b is in the second vertical direction. At positions orthogonal to the bending line 12, the outer surface of the laminated sheet 81 of the paper container 90 with a chuck is pressed with a hot press or the like to a size of about 2 mm, and the chuck tape 61 is crushed so that the thickness becomes thin. The crushed portion can be provided by deforming.

The paper container 90 with a chuck is not particularly limited in actual manufacturing, but in order to improve productivity, a device for assembling the paper container, filling the contents, and sealing each joint in-line is provided. Using, the long printed laminated sheet 81 rolled up in a roll shape is unwound, and the paper containers are connected side by side, and the folding line is processed, half-folded, and the chuck tape 61 is inserted and heat-bonded, and the side surface is used. The heat seal of the paper seal allowance 36, the punching of the notch 77, and the like may be performed.
If the desired paper container 90 with a chuck can be obtained, the order of the steps may be other than the above.

Next, a paper container with a chuck (planar state) 91 in the intermediate stage of the shape shown in FIG. 7 is manufactured by a method of cutting into individual paper containers, and then the paper container is raised into a three-dimensional shape. Further, the back surfaces of the upper stacking plates 34a and 34b are bent to the ridges, and the top surface ridges (ears) 74 on both sides are joined to the body 72 of the paper container to open the bottom of the paper container. After filling the contents from the bottom that opens, the bottom surface is heat-sealed and bent with the seal allowances 37a and 37b, and then the bottom surface that protrudes to both sides of the bottom 73 of the paper container 90 with a chuck. The package of the paper container 90 with a chuck can be completed by bending and heat-adhering the protruding portion (ear portion) 75 to the bottom plates 35a and 35b.

FIG. 9 is a perspective view showing a first embodiment of the paper container 90 with a chuck of the present invention.
The chucked paper container 90 shown in FIG. 9 has an outer shape formed into a rectangular parallelepiped shape, and such a chucked paper container 90 can be produced by the following procedure.

For example, using the blank plate 95 having the configuration shown in FIG. 6, the blank plate 95 is half-folded along the intermediate horizontal bending line (half-folding line) 21 as shown in FIG. 7, and the chuck tape joint portions 52a and 52b are overlapped with each other. , The chuck tape 61 in which the male tape body 64 and the female tape body 65 are fitted in advance is inserted, and the chuck tape joint portions 52a and 52b are heated and pressed from the outside of the blank plate 95 for thermal adhesion.

Subsequently, the side surfaces on both sides facing each other are heat-sealed, and notches 77 are provided at both ends of the easy-opening processed lines 51a and 51b that overlap each other in the front and rear, and the bottom surface is not covered with the seal allowances 37a and 37b. A paper container (flat state) 91 with a chuck in an intermediate stage having a folded shape that opens with a seal is produced.

Next, a mandrel is inserted into the paper container (flat state) 91 with a chuck in the intermediate stage through the opening of the bottom 73, leaving the upper stacking plates 34a and 34b, and the lower portion thereof is formed by the first transverse bending lines 22a and 22b. Spread back and forth, the upper stacking plates 34a and 34b stand upright, followed by a flat top 71 with top plates 33a and 33b, and a body 72 with a rectangular cross section, and the bottom. A paper container with a chuck (boxing state) 92 in the intermediate stage, which opens in a rectangular shape, is formed.
At this stage, as shown in FIG. 8, the upper stacking plates 34a and 34b are erected upward.

Next, the upper overlapping plates 34a and 34b that stand up in the upward direction are bent toward the back side (the back side of the top plate 33a) and laid down, and the top surface protrusions (ears) 74 that protrude on both the left and right sides are formed. , Bend in the direction of the side plates 32a and 32b and join by heat bonding or the like.
As a method of joining, there are a method of using an adhesive (hot melt or the like), a method of using an adhesive tape, a method of mechanically joining (a method of engaging, a method of using a joining tool, etc.). When there is a thermoplastic resin layer (sealant layer) on the outermost surface of the blank plate 95, there is a method of heat-sealing the thermoplastic resin layer.

The tip of the top protruding portion (ear portion) 74 may be joined to the body portion 72 of the paper container 90 with a chuck.
Further, a portion other than the tip portion of the top surface protruding portion (ear portion) 74 may be joined to the body portion 72 of the paper container 90 with a chuck. In that case, the tip of the top protruding portion (ear portion) 74 does not have to be joined to the body portion 72 of the paper container 90 with a chuck.

With the bottom of the paper container molded as described above facing up, the contents are filled from the bottom that opens, and then the bottom is bent to heat the bottom surface wrapping seal allowances 37a and 37b together in a gassho seal format. After sealing, the bottom surface wrapping seal allowances 37a and 37b are bent and laid down on, for example, the back surface waving (bottom plate 35a wa), and the bottom surface waving protrusions (ears) 75 protruding to both the left and right sides are formed on the bottom plate 35a. , 35b is bent and joined to complete the package of the rectangular parallelepiped paper container 90 with a chuck.

In the configuration of the paper container 90 with a zipper shown in FIG. 9, the back side upper stacking plate 34a has a back side easy-opening processing line 51a, and the upper overlapping plates 34a and 34b have an easy-opening processing line 51a. As described above, the chuck tape 61 is heat-bonded to the inner surface of the bottom of the 51b, but it is omitted because it is invisible from the outside.

In the blank plate 95 of the paper container 90 with a chuck of the first embodiment, the top plate 33a, 33b can be easily bent so that the top plate protruding portion (ear portion) 74 can be easily formed into a desired shape. 38a, 38b, and / or the upper stacking plates 34a, 34b, which are connected to the blank plate 95 in the lateral direction (horizontal direction). At least one of the side plates 43a and 43b of the upper overlapping plate to be provided is subjected to a process for facilitating bending (easy bending process). (See FIG. 6).
The processing that facilitates this bending includes, for example, embossing processing, press processing, half-cut processing, perforation processing, ruled line (folding line) processing, and the like.

In the paper container 90 with a chuck formed by the blank plate 95 of the present embodiment, the top surface edge protrusion (ear portion) 74 can be easily bent, and the top surface edge protrusion (ear portion) 74 ear portion can be easily bent. The shape of the body is stable, and the bonding to the body portion 72 is stable. Therefore, defective products due to the detachment of the protruding portion (ear portion) 74 on the top surface can be reduced.

Further, since the bending process of the top surface protruding portion (ear portion) 74 becomes easy, the bending process of the bending portion 76 of the top surface edge protruding portion (ear portion) 74 becomes a desired shape. The outer surface of the bent portion 76 is not stretched more than necessary. Therefore, the bent portion 76 is less likely to be damaged (cracked).

In the blank plate 95 of the paper container 90 with a chuck of the second embodiment, the back side top surface plate 95 is connected to the back side top surface plate 33a in the lateral direction (horizontal direction). Part) In the margin 38a, of the area divided by the diagonal bending line 13a on the back side of the top surface, the upper stacking plate closer to the back side upper stacking plate 34a is the back side of the top surface. In the protruding part (ear part) allowance 38a-1 (hereinafter referred to as the first ear part allowance),
Alternatively, at the front surface top surface plate 33b, which is connected in the lateral direction (horizontal direction) of the blank plate 95, the front surface surface surface is obliquely bent at the front surface surface surface protrusion (ear portion) allowance 38b. Of the regions divided by the line 13b, the upper stacking plate closer to the upper stacking plate 34b on the front surface and the top surface is protruding (ear portion) 38b-1 (hereinafter referred to as the second). Of the ear charges)
At least one of the first ear allowance 38a-1 and the second ear allowance 38b-1 is provided with an easy bending bending line 26a, 26b substantially parallel to the second vertical bending line 12 of the blank plate 95. ing. (See FIG. 10).

Further, the back side top surface side diagonal bending line 13a includes the back side first top intersection J, which is the intersection of the second vertical bending line 12 and the back side second horizontal bending line 23a, and the first vertical bending line. It is a straight line connecting the back side second top intersection K, which is the intersection of the folding line 11 and the back side first horizontal bending line 22a.
Further, the front surface and top surface of the diagonal bending line 13b are the front surface first top intersection point L composed of the intersection of the second vertical bending line 12 and the front surface second horizontal folding line 23b and the first vertical bending line L. It is a straight line connecting the intersection of the folding line 11 and the first horizontal bending line 22b of the front and the second top of the front.

In the paper container 90 with a chuck formed from the blank plate 95 of the present embodiment, the top surface edge protrusion (ear portion) 74 can be easily bent, and the shape of the top surface edge protrusion (ear portion) 74. Is stable, and the connection to the body portion 72 is stable. Therefore, it is possible to reduce defective products in which the protruding portion (ear portion) 74 on the top surface comes off.

Further, since the bending process of the top surface protruding portion (ear portion) 74 becomes easy, the bending process of the bending portion 76 of the top surface edge protruding portion (ear portion) 74 becomes a desired shape. The outer surface of the bent portion 76 is not stretched more than necessary. Therefore, the bent portion 76 is less likely to be damaged (cracked).

In FIG. 10, the easy bending bending line 26a is provided on the two forming plates of the first selvage portion 38a-1, and the easy bending bending line 26b is provided on the two forming plates of the second selvage portion 38b-1. ..
However, by providing the easy bending bending lines 26a and 26b on at least one of the four selvage allowances (first ear allowance 38a-1 and second ear allowance 38b-1), the top surface can be raised. It is possible to reduce damage (cracking) at at least one portion of the bent portion 76 of the protruding portion (ear portion) 74.

In the blank plate 95 of the paper container 90 with a chuck of the third embodiment,
In the back sill top surface slab protrusion (ear portion) 38a which is continuously provided in the lateral direction (horizontal direction) of the blank plate 95 of the back sill top surface plate 33a, the back sill top surface sill diagonal bending line 13a Of the areas divided by, the side plate closer to the back side plate 32a is referred to as the back side plate, the back side plate, and the top surface portion (ear portion) 38a-2 (hereinafter referred to as the third ear portion). ),
Alternatively, at the front surface top surface plate 33b, which is connected in the lateral direction (horizontal direction) of the blank plate 95, the front surface surface surface is obliquely bent at the front surface surface surface protrusion (ear portion) allowance 38b. Of the regions divided by the line 13b, the side plate closer to the front side plate 32b, the front side plate, the top surface, and the protrusion (ear portion) 38b-2 (hereinafter referred to as the fourth ear portion). Say.)
At least one easy bending bending line 27a, 27b substantially parallel to the second lateral bending line 23a, 23b of the blank plate 95 is provided on at least one third ear allowance 38a-2 and a fourth ear portion 38b-2. I have. (See FIG. 11).

In the paper container 90 with a chuck formed by the blank plate 95 of the present embodiment, the top surface edge protrusion (ear portion) 74 can be easily bent, and the top surface edge protrusion (ear portion) 74 ear portion can be easily bent. The shape of the body is stable, and the bonding to the body portion 72 is stable. Therefore, defective products due to the detachment of the protruding portion (ear portion) 74 on the top surface can be reduced.

Further, since the bending process of the top surface protruding portion (ear portion) 74 becomes easy, the bending process of the bending portion 76 of the top surface edge protruding portion (ear portion) 74 becomes a desired shape. The outer surface of the bent portion 76 is not stretched more than necessary. Therefore, the bent portion 76 is less likely to be damaged (cracked).

In FIG. 11, the easy bending bending line 27a is provided on the two forming plates of the third selvage portion 38a-2, and the easy bending bending line 27b is provided on the two forming plates of the fourth selvage portion 38b-2. ..
However, by providing at least one of the above four selvage allowances (third ear allowance 38a-2, fourth ear allowance 38b-2) with easy bending bending lines 27a and 27b, the top surface can be raised. It is possible to reduce damage (cracking) at at least one portion of the bent portion 76 of the protruding portion (ear portion) 74.

In the blank plate 95 of the paper container 90 with a chuck of the fourth embodiment, of the regions of the side plates 43a and 43b of the upper stacking plates 34a and 34b connected in the lateral direction of the blank plate 95. The side plates 43a and 43b of at least one upper laminated plate are provided with at least one easily bent bending line 28a and 28b substantially parallel to the second vertical bending line 12 of the blank plate 95. (See FIG. 12).

In the paper container 90 with a chuck formed from the blank plate 95 of the present embodiment, the top surface edge protrusion (ear portion) 74 can be easily bent, and the top surface edge protrusion (ear portion) 74 ear portion can be easily bent. The shape of the body is stable, and the bonding to the body portion 72 is stable. Therefore, defective products due to the detachment of the protruding portion (ear portion) 74 on the top surface can be reduced.

Further, since the bending process of the top surface protruding portion (ear portion) 74 becomes easy, the bending process of the bending portion 76 of the top surface edge protruding portion (ear portion) 74 becomes a desired shape. The outer surface of the bent portion 76 is not stretched more than necessary. Therefore, the bent portion 76 is less likely to be damaged (cracked).

In FIG. 12, the easy bending bending line 28a is easily formed on the two forming plates of the side plate 43a of the upper overlapping plate of the back side, and the two forming plates of the side plate 43b of the upper overlapping plate of the front side are easily formed. Bending Bending line 28b is provided.
However, by providing the easy bending bending lines 27a and 27b on at least one of the side plates 43a and 43b of the above four upper overlapping plates, the bent portion of the top surface protruding portion (ear portion) 74. Damage (cracks) at at least one of 76 can be reduced.

Two or more of the second embodiment, the third embodiment, and the fourth embodiment may be implemented at the same time.
FIG. 13 shows all the easy-bending fold lines of the second embodiment, the third embodiment, and the fourth embodiment, and all the corresponding forming plates are provided with the easy-bending fold lines.
In this embodiment, since the top surface ridge protrusion (ear portion) 74 is easily bent, the top surface ridge protrusion (ear portion) 74 can be easily processed into a desired shape, and the body is easily bent. The connection to the portion 72 is stable.

The chucked paper container 90 of the fifth embodiment is the chucked paper container 90 formed from the blank plate 95 of any one of the first to fourth embodiments.

In the paper container 90 with a chuck formed by the blank plate 95 of the present embodiment, the top surface edge protrusion (ear portion) 74 can be easily bent, and the top surface edge protrusion (ear portion) 74 ear portion can be easily bent. The shape of the body is stable, and the bonding to the body portion 72 is stable. Therefore, defective products due to the detachment of the protruding portion (ear portion) 74 on the top surface can be reduced.

Further, since the bending process of the top surface protruding portion (ear portion) 74 becomes easy, the bending process of the bending portion 76 of the top surface edge protruding portion (ear portion) 74 becomes a desired shape. The outer surface of the bent portion 76 is not stretched more than necessary. Therefore, the ceiling bent portion 76 is less likely to be damaged (cracked).

The chucked paper container 90 of the sixth embodiment is generated when the top surface of the chucked paper container 90 has a protruding portion (ear portion) 74 joined to the body portion 72 of the chucked paper container 90. The angle θ of the bent portion 76 of the surface protruding portion (ear portion) 74 is an obtuse angle. (See FIG. 14).

FIG. 15 shows an enlarged cross-sectional view of the bent portion 76 of the top surface protruding portion (ear portion) 74 shown in FIG. 14, and the cut surface thereof is at the position AA of the cross section shown in FIG. is there.
In the paper container 90 with a chuck of the present embodiment, the amount (length) at which the outer surface of the bent portion 76 of the top surface edge protruding portion (ear portion) 74 is stretched is substantially perpendicular to the bending angle θ of the bent portion 76. Since it is smaller than the case, damage (cracking) of the relevant portion is less likely to occur.

In the paper container 90 with a chuck of the seventh embodiment, the protruding portion (ear portion) of the top surface is generated when the protruding portion (ear portion) 74 of the top surface is joined to the body portion 72 of the paper container 90 with a chuck. ) 74, the angle θ of the bent portion 76 is 100 ° or more and 160 ° or less.

If the bending angle θ of the bent portion 76 of the top surface protruding portion (ear portion) 74 is less than 100 °, the outer surface of the bent portion 76 is likely to be damaged (cracked), and the bending angle of the bent portion 76. When θ exceeds 160 °, it becomes difficult to join the top surface protruding portion (ear portion) 74 to the body portion 72.
Furthermore, since the amount of protrusion of the top surface protrusion (ear) 74 becomes large, there is a risk of contact with obstacles during use or transportation, and therefore the top surface protrusion (ear) 74 is easy to come off.
It is more desirable that the bending angle θ of the bent portion 76 of the top surface protruding portion (ear portion) 74 is 120 ° or more and 150 ° or less.

The chucked paper container 90 of the eighth embodiment is generated when the top surface protruding portion (ear portion) 74 of the chucked paper container 90 is joined to the body portion 72 of the chucked paper container 90. The bent portion 76 of the surface protruding portion (ear portion) 74 is bent at a curve. (See FIG. 16).

FIG. 17 shows an enlarged cross-sectional view of the bent portion 76 of the top surface protruding portion (ear portion) 74 shown in FIG. 16, and the cut surface thereof is at the position AA of the cross section shown in FIG. is there.
In the paper container 90 with a chuck of the present embodiment, the amount (length) at which the outer surface of the bent portion 76 of the top surface edge protruding portion (ear portion) 74 is stretched is such that the bending of the bent portion 76 is not a curve but a corner. Since it is smaller than when it is held (when the radius of curvature is extremely small), damage (cracking) of the portion is less likely to occur.

In the paper container 90 with a chuck of the ninth embodiment, the protruding portion of the top surface (ear portion) 74 is formed when the protruding portion (ear portion) 74 of the top surface is joined to the side plates 32a and 32b of the paper container 90 with a chuck. The radius of curvature R of the bent portion 76 of the selvage portion 74 is 1 mm or more and 10 mm or less.

If the radius of curvature R of the bent portion 76 is less than 1 mm, the outer surface of the bent portion 76 is likely to be damaged (cracked), and if the radius of curvature R of the bent portion 76 exceeds 10 mm, the top surface of the bent portion 76 protrudes. It becomes difficult to join the (ear portion) 74 to the body portion 72.
Furthermore, since the amount of protrusion of the top surface protrusion (ear) 74 becomes large, there is a risk of contact with obstacles during use or transportation, and therefore the top surface protrusion (ear) 74 is easy to come off.

Further, with respect to the easily bendable bending line that makes it easy to bend the protruding portion (ear portion) 74 on the top surface, the following effects are obtained depending on the forming plate to be installed.
The second ear portion 38b-1, which is a forming plate whose outer surface becomes a ridge when the top surface ridge protrusion (ear portion) 74 is bent, and the side plate 43b of the front ridge upper stacking plate 34b, When the above-mentioned easy-bending bending lines 26b and 28b are provided, the easy-bending bending lines 26b and 28b are present at positions where the laminated body of the blank plate 95 is greatly extended, so that the top surface is a protruding portion (ear portion). ) 74 can be easily bent, and is highly effective in reducing damage (cracks) on the laminated sheet 81 of the bent portion 76 of the top surface protruding portion (ear portion) 74.

The first ear allowance 38a-1 and the third ear allowance 38a-2, which are forming plates whose inner surface becomes an inner surface (position that cannot be seen from the outside) when the top surface edge protrusion (ear portion) 74 is bent. When the easily bent bending lines 26a, 27a, 27b, 28a are provided on the side plate 43a of the fourth selvage portion 38b-2 and the back side upper overlapping plate 34a, the paper container 90 with a chuck Since the easy-bending bending lines 26a, 27a, 27b, 28a are present at positions that cannot be seen from the outer surface, the easy-bending bending lines 26a, 27a, 27b, 28a cannot be seen from the outside, so that the appearance is excellent.

The paper container 90 with a chuck of the tenth embodiment is formed from each of the blank plates 95 described above, and in the blank plate 95, the wall plates 31a and 31b and the bottom plates 35a and 35b cross the blank plate 95 in the lateral direction. The bottom plate 35a, 35b and the bottom edge seal allowances 37a, 37b, which are the upper and lower edge portions of the blank plate 95, are connected to each other via the third lateral bending lines 24a, 24b, and are lateral to the blank plate 95. It was connected through the fourth horizontal bending lines 25a and 25b that crossed in the direction, and the back side bottom surface seal allowance 37a and the front side bottom edge seal allowance 37b were joined and joined in the form of a gassho seal. The bottom surface seals 37a and 37b are laid down by bending the back surface, and the bottom surface protrusions (ears) 75 protruding from the left and right sides of the bottom 73 of the paper container 90 with a chuck are formed on the bottom plates 35a and 35b. It is bent and joined to the sword.

Since the chucked paper container 90 of the present embodiment can form a stable bottom after filling the contents inside, it is possible to provide the chucked paper container 90 with less leakage of the contents.
In addition, since a separate member is not used for forming and sealing the bottom, the cost is low.

In the method of manufacturing the paper container 90 with a chuck according to the eleventh embodiment, the wall surface plates 31a and 31b and the bottom plates 35a and 35b are formed through the third lateral bending lines 24a and 24b that cross the blank plate 95 in the lateral direction. The bottom plate 35a, 35b and the bottom edge seal allowances 37a, 37b, which are the upper and lower edge portions of the blank plate 95, are the fourth lateral bending lines 25a, 25b that cross the blank plate 95 in the lateral direction. The bottom surface is a step of forming a folded shape in the intermediate stage where the bottom surface is unsealed and the bottom surface is opened, and the contents are filled from the opening bottom portion 73 to form the bottom surface of the back surface. After joining the wa seal allowance 37a and the front wa seal allowance 37b in the form of a gassho seal, the joined bottom wa seal allowances 37a and 37b are bent to the back side and laid down, and the bottom of the paper container 90 with a chuck is laid down. This is a manufacturing method in which the bottom surface protruding portions (ear portions) 75 protruding from both the left and right sides of the 73 are bent and joined by the bottom surface plates 35a and 35b.

In the method for manufacturing the chucked paper container 90 of the present embodiment, since the procedures for manufacturing the paper container, filling the contents, and sealing the container are appropriate, the chucked paper container for filling and sealing the contents is used. Since the 90 can be manufactured by using a rational manufacturing apparatus, the cost can be reduced.

Hereinafter, the present invention will be described in more detail with reference to examples.
<< Example 1 >>
In the first embodiment, the blank plate 95 of FIG. 10 corresponding to the second embodiment is used to prepare a paper container 90 with a chuck having the configuration shown in FIG. 9, and both sides facing each other as shown in FIG. A paper container (flat state) 91 with a chuck in an intermediate stage having a shape in which the side surface seal allowance 36 is heat-sealed and the bottom surface edge seal allowances 37a and 37b are unsealed and folded is produced.
Next, as shown in FIG. 8, a paper container with a zipper (boxed state) 92 in an intermediate stage in which the bottom 73 opens is produced, and then the paper container with a zipper 90 of Example 1 is used.
The blank plate 95 of FIG. 10 is a blank plate 95 provided with easy bending bending lines 26a and 26b on the first ear portion 38a-1 and the second ear portion 38b-1.

As the laminated sheet 81 of the blank plate 95, the laminated sheet 81 having the following configuration was used.
(Outer surface) Print layer for patterns (gravure printing) /
LDPE layer (thickness 20 μm) (Japan polyethylene, LC520) /
Paper substrate layer (Nippon Paper Industries, base paper for liquid paper containers) (150 g / m ² ) /
EMAA (20 μm) (Mitsui / Dow Polychemical, N0908N) /
Silica-deposited PET (12 μm) (Dainippon Printing, IB-PET-UBP) /
LDPE layer (40 μm) (Japan Polyethylene, LC520) (Inner surface)

The method for manufacturing the laminated sheet 81 will be described.
First, an LDPE layer (20 μm) is formed on the outer surface of the paper base material layer by extrusion lamination.
Next, silica-deposited PET (12 μm) is laminated on the inner surface of the paper base material layer by extrusion laminating (sandwich laminating) with molten EMAA (20 μm) interposed in the middle.

Next, an LDPE layer (40 μm) is formed on the opposite side (inner surface) of the paper substrate layer of the silica-deposited PET (12 μm) by extrusion lamination.
Next, a pattern or the like is printed on the outer surface of the LDPE layer (20 μm) formed on the outer surface of the paper base material layer by a gravure printing machine.
In printing, the LDPE layer (20 μm) may be formed by extrusion lamination on the outer surface of the paper base layer after printing on the paper base layer, or after printing on the paper base layer, the printing may be performed. It is not necessary to extrude the laminate on the outside.

Further, anchor coating treatment, corona treatment, frame treatment (flame treatment) and the like may be performed between the bonding layers as necessary to improve the bonding force. Alternatively, the molten resin may be treated with ozone or the like.
By the above procedure, the laminated sheet 81 of the blank plate 95 is manufactured.

Next, the laminated sheet 81 is subjected to ruled line processing and punching processing to complete the blank plate 95.

The chuck tape 61, which is heat-bonded and attached to the inner surfaces of the upper stacking plates 34a and 34b of the paper container 90 with the chuck tape, has two layers of tape bodies that are heat-bonded to both the male tape body 64 and the female tape body 65. In the laminated structure, the resin layer on the surface to be heat-bonded to the paper container is formed of LLDPE, the resin layer on the opposite surface is formed of MDPE, and both the male and female fitting portions are formed. A tape made of LLDPE and having a width of 13 mm was used.

The size of the blank plate 95 is a rectangular shape with a length of 440 mm and a width of 169 mm. The bottom surface with a width of 10 mm was provided with seal allowances 37a and 37b at the edges, respectively.

Inside the blank plate 95, with the intermediate horizontal folding line (half-folding line) 21 as the center line, the upper overlapping plates 34a, 34b, top plates 33a, 33b, wall plates 31a, 31b and their sides are symmetrically formed vertically. The side plates 32a and 32b and the bottom plates 35a and 35b are connected in this order via bending lines, and the dimensions of the finished rectangular parallelepiped-shaped paper container are 95 mm in width, 120 mm in height, and depth. It was formed to be 60 mm.

The upper overlapping plates 34a and 34b each have a length of 28 mm in the vertical direction (longitudinal direction of the blank plate 95).

Then, on the upper overlapping plates 34a and 34b, when the blank plate 95 is half-folded along the intermediate horizontal folding line (half-folding line) 21, the position is 6 mm below the intermediate horizontal folding line (half-folding line) 21 which is the upper end. As a means for opening the container, easy-opening processing lines (perforations) 51a and 51b are provided in the horizontal direction on the paper base material layer of the laminated sheet 81 together with printing, and an upper laminated plate is provided below the laminated sheet 81 with an interval of 5 mm. The chuck tape 61 (width 13 mm) was heat-bonded to the inner surfaces of the 34a and 34b.

Further, after half-folding the blank plate 95, heat-adhering the chuck tape 61, and heat-sealing the side surface seal allowance 36 by the method described above, the overlapping easy-opening processed lines (perforation line) 51a and 51b are both ends. A paper container (flat state) 91 with a chuck in an intermediate stage in which the notch 77 is provided and the bottom 73 is in an unsealed state is produced. (See FIG. 7).

Next, the mandrel is inserted through the unsealed opening of the bottom 73 of the paper container (flat state) 91 with a chuck in the intermediate stage, leaving the upper stacking plates 34a and 34b, and the lower portion is the first horizontal bending line. The upper overlapping plates 34a and 34b stand upright by the 22a and 22b, and the flat top 71 by the top plates 33a and 33b and the body 72 having a rectangular cross section are further below the upper overlapping plates 34a and 34b. Subsequently, a paper container with a chuck (in the boxed state) 92 at an intermediate stage in which the bottom opens in a rectangular shape was formed. (See FIG. 8).

It should be noted that the upper overlapping plates 34a and 34b that are overlapped are bent by the back side top plate 33a so that the top surface plate protruding portions (ears) that are continuously provided on both the left and right sides of the top portion 71 of the paper container 90 with a chuck. The top 71 and the top protrusion (ear) via the bent portion 76 of the top protrusion (ear) 74, which is generated when the 74 is joined to the body 72 of the paper container. A paper container 90 with a chuck was produced in which the angles formed by 74 and 74 were 100 °, 135 °, and 160 °.

Further, the top portion 71 via the bent portion 76 of the top surface edge protrusion (ear portion) 74 and the top surface edge protrusion (ear portion) 74 form a curve, and the radius of curvature of the curve is about 2 mm. A paper container 90 with a chuck of 5 mm and 10 mm was produced.

The tip of the top surface ridge (ear) 74 is bent inward of the paper container 90 with a chuck (downward before the top surface ridge (ear) 74 is bent), and the top surface is bent. It is easy to join the protruding portion (ear portion) 74 and the body portion 72.

<< Example 2 >>
In Example 2, a paper container 90 with a chuck was produced using the blank plate 95 of FIG. 11 corresponding to the third embodiment. The blank plate 95 of FIG. 11 is a blank plate 95 provided with easy bending bending lines 27a and 27b on the third ear portion 38a-2 and the fourth ear portion 38b-2.
Other shapes, materials, processing methods, etc. are the same as in Example 1.

<< Example 3 >>
The third embodiment corresponds to the fourth embodiment, and the paper container 90 with a chuck was manufactured using the blank plate 95 of FIG. The blank plate 95 is a blank plate 95 provided with easy bending bending lines 28a and 28b on the side plates 43a and 43b of the upper laminated plate.
Other shapes, materials, processing methods, etc. are the same as in Example 1.

<< Example 4 >>
In Example 4, a paper container 90 with a zipper was produced using the blank plate 95 of FIG. 13 to which the second embodiment, the third embodiment, and the fourth embodiment were all applied. The blank plate 95 of FIG. 13 is provided with easy bending bending lines 26a and 26b on the first ear allowance 38a-1 and the second ear portion 38b-1, and the third ear portion allowance 38a-2 and the fourth ear portion. The blank plate 95 is provided with the easy-bending bending lines 27a and 27b on the margin 38b-2, and the easy-bending bending lines 28a and 28b are provided on the side plates 43a and 43b of the upper stacking plate.
Other shapes, materials, processing methods, etc. are the same as in Example 1.

≪Comparison example≫
In the comparative example, the paper container 90 with a chuck shown in FIG. 2 was produced using the blank plate 95 not subjected to the easy bending process shown in FIG.
It should be noted that the upper overlapping plates 34a and 34b that are overlapped are bent into the back side top plate 33a, and the top surface plate protruding portion (ear portion) that is continuously provided at both left and right ends of the top portion 71 of the paper container 90 with a chuck. ) 74 is joined to the body portion 72 of the paper container, and the top portion 71 and the top surface edge protrusion (ear portion) via the bent portion 76 of the top surface edge protrusion (ear portion) 74 occur. The angle formed by 74 was defined as a substantially right angle.
Other shapes, materials, processing methods, etc. are the same as in Example 1.

≪Evaluation≫
In the comparative example, the laminated sheet 81 of the bent portion 76 of the top surface protruding portion (ear portion) 74 of the paper container 90 with a chuck was damaged (cracked).
In Examples 1 to 4, the laminated sheet 81 of the bent portion 76 of the top surface protruding portion (ear portion) 74 of any of the chucked paper containers 90 was not damaged (cracked).

In Examples 1 to 4, when the top surface curve protrusion (ear portion) 74 is bent into the body portion 72 and joined to the body portion 72, the top surface edge protrusion portion (ear portion) 74 It was easy to bend the bent portion 76 at an obtuse angle or to process it with a curved line. Therefore, since the shape of the top surface protrusion (ear) 74 is stable, the laminated sheet 81 of the bent portion 76 of the top surface protrusion (ear) 74 of the paper container 90 with a chuck is damaged (cracked). Was hard to occur.

In the first embodiment, when the top surface protruding portion (ear portion) 74 is bent toward the body portion 72 and joined to the body portion 72, the laminated sheet 81 is particularly stretched significantly and damage (cracking) occurs. Since the easy-bending bending line is arranged in an easy place, the laminated sheet 81 of the bent portion 76 of the top surface protruding portion (ear portion) 74 of the paper container 90 with a chuck is less likely to be damaged (cracked).

In the fourth embodiment, when the top surface protruding portion (ear portion) 74 is bent toward the body portion 72 and joined to the body portion 72, many locations (formations) that cause damage (cracks) occur. Since the easily bent bending line is arranged on the plate), the laminated sheet 81 of the bent portion 76 of the top surface protruding portion (ear portion) 74 of the paper container 90 with a chuck is less likely to be damaged (cracked).

The paper containers 90 with chucks of Examples 1 to 4 prepared as described above are filled with snacks as contents from the bottom 73, respectively, and then the bottom 73 is folded and the bottom surface is heat-sealed with the sealing allowances 37a and 37b. Then, the heat-sealed portion was laid down in the direction of the backside bottom plate 35a. Further, the bottom surface protrusions (ears) 75 protruding from the left and right sides of the bottom portion 73 are bent into the bottom plates 35a and 35b, and heat-bonded to the front surface plate bottom plate 35b and the front surface bottom surface seal allowance 37b. A rectangular parallelepiped-shaped paper container package with a chuck using the blank plates 95 of Examples 1 to 4 was completed.

Further, regarding the rectangular parallelepiped-shaped paper container package with a zipper using the blank plates 95 of Examples 1 to 4 produced as described above, in particular, the opening property, the suitability for taking out the contents, and the resealing property by the zipper are examined. As a result of testing, the easy-opening processing lines (perforation line) 51a and 51b were easily provided by the notches 77 and the easy-opening processing lines (perforation line) 51a and 51b provided on the upper parts of the upper stacking plates 34a and 34b as opening means. I was able to cut off the upper part of the package and open it.
Next, by picking the upper ends of the opened upper stacking plates 34a and 34b and pulling them apart from each other, the chuck fitting can be easily dissociated, and the upper portion of the chucked paper container 90 is opened over substantially the entire width. The snack food filled inside could be easily taken out.

Further, after taking out a part of the contents, the chuck is easily refitted with the package of the chucked paper container 90 using the blank plate 95 of Examples 1 to 4 to form the chucked paper container 90. It could be resealed and the rest of the contents could be properly preserved.

Further, in the paper container 90 with a chuck of the present embodiment, the mass ratio of the paper to the total mass of the paper container is about 60% by mass, which sufficiently satisfies the standard of 51% by mass or more as a paper container. ..

11 1st vertical bending line 12 2nd vertical bending line 13a Back side top surface is diagonally bent line 13b Front side is top surface is diagonally bent line 14a Back side is bottom surface is diagonally bent line 14b Front side is bottom surface W Diagonal fold line 21 Intermediate horizontal fold line (half fold line)
22a Back side first horizontal bending line (lower side of upper stacking plate)
22b Front side first horizontal bending line (lower side of upper stacking plate)
23a Back side fold second horizontal bending line (bottom side of top plate)
23b Front side second horizontal bending line (bottom of top plate)
24a Back side 3rd horizontal bending line (under wall plate)
24b Table side 3rd horizontal bending line (under wall plate)
25a Back side 4th horizontal bending line (bottom plate bottom side)
25b Front side 4th horizontal bending line (bottom plate bottom)
26a Easy bending bending line in the area of the first ear allowance (defined below) 26b Easy bending bending line in the area of the second ear allowance (defined below) 27a Of the third ear allowance (defined below) Easy-bending bending line 27b in the area Easy-bending bending line 28a in the area of the fourth selvage (defined below) Back side Easy-bending bending line 28b in the area of the side plate of the upper stacking plate Easy bending bending line 31a back wall wall plate 31b front side wall plate 32a back side side plate 32b front side side plate 33a back side top plate 33b front side Top plate 34a Back sill upper lap plate 34b Front sill upper lap plate 35a Back sill bottom plate 35b Front sill bottom plate 36 Side sill seal allowance 37a Back sill bottom sill seal allowance 37b Front sill bottom River seal allowance 38a Back edge Top surface edge protrusion (ear) allowance 38a-1 Upper stacking plate back edge Top surface edge protrusion (ear) allowance (first ear allowance)
38a-2 Side plate side plate back side top surface side protrusion (ear) allowance (third ear allowance)
38b Top surface ridge (ear) allowance 38b-1 Upper stacking plate top surface ridge (ear) allowance (second ear allowance)
38b-2 Side plate surface plate Top surface surface protrusion (ear) allowance (fourth ear allowance)
41a Back sill bottom protrusion (ear) allowance 41b Front sill bottom protrusion (ear) allowance 43a Back sill upper overlay plate side plate 43b Front sill upper overlay plate side Part plate 51a Back side easy opening processing line (perforation line of sight)
51b Table is easy to open processing line (sewing machine line of sight)
52a Back side chuck tape joint 52b Front side chuck tape joint 61 Chuck tape 64 Male tape body 65 Female tape body 71 Top of chucked paper container 72 Body of chucked paper container 73 Chucked paper container Bottom 74 Top surface protruding part (ear part)
75 Bottom edge protrusion (ear)
76 Bent part of the protruding part (ear part) of the top surface 77 Notch 81 Laminated sheet of paper container 82 Damage (crack)
90 Paper container with zipper 91 Paper container with zipper in the middle stage (flat state)
92 Paper container with zipper in the middle stage (boxing state)
95 blank board

J Backside first top intersection (intersection between the second vertical bending line and the backside second horizontal bending line)
K The intersection of the second top of the back side (the intersection of the first vertical bending line and the first horizontal bending line of the front side)
L Omotegawa 1st top intersection (intersection between the 2nd vertical bending line and the Omotegawa 2nd horizontal bending line)
M Omotegawa 2nd top intersection (intersection between the 1st vertical bending line and the 1st horizontal bending line of Omotegawa)

θ Bending angle of top surface protrusion (ear) R Radius of curvature of top surface protrusion (ear)

Claims (11)

A blank plate of a paper container with a zipper made of a laminated sheet using paper as a base material, and a side edge seal allowance is formed by a first vertical bending line at the left and right edge portions of the blank plate.
An upper stacking plate, a top plate, a wall surface plate, and a bottom plate are sequentially provided vertically above and below the intermediate horizontal bending line, respectively, with the intermediate horizontal bending line in the middle portion in the vertical direction of the blank plate as a center. ,
The upper overlapping plate and the top plate are connected to each other via a first lateral bending line that crosses the blank plate in the lateral direction.
The top plate and the wall plate are connected to each other via a second lateral bending line that crosses the blank plate in the lateral direction.
The wall surface plates 31a and 31b and the bottom plate 35a and 35b are continuously provided via third lateral bending lines 24a and 24b that cross the blank plate 95 in the lateral direction.
Side plates are continuously provided on the left and right sides of the wall plate via a second vertical bending line that vertically traverses the blank plate.
When the upper overlapping plate is half-folded along the intermediate horizontal folding line, the easy-opening processing line and the chuck tape joint portion are formed at the positions where they are expected to overlap each other as lateral opening means. It is provided in order from the line,
At least one of the protrusion margins of the top surface of the top plate, which is connected in the lateral direction of the blank plate, and / or the side plates of the upper laminated plate, which is connected in the lateral direction of the upper laminated plate. A blank plate of a paper container with a zipper, which is characterized in that the sheet is easily bent. Among the top plates, the back side of the back side of the paper container with a chuck is connected to the blank plate in the lateral direction. Of the areas divided by the diagonal fold lines, the portion closer to the upper stacking plate, which is closer to the upper stacking plate, is referred to as the first ear portion, and is referred to as the first ear portion. Of the one ear part
Alternatively, among the top plates, the front surface of the paper container with a chuck is connected to the front surface of the top surface plate in the lateral direction of the blank plate. Of the areas divided by the diagonal fold line, the one closer to the upper stacking plate, the upper stacking plate, the top surface, and the protruding portion, will be the second ear part in the future. Of the second ear charge, it is called the generation.
The blank plate of a paper container with a chuck according to claim 1, wherein at least one easily bent bending line is provided on at least one selvage of the first ear and the selvage of the second ear. Among the top plates, the back side of the back side of the paper container with a chuck is connected to the blank plate in the lateral direction. Of the areas divided by the diagonal fold lines, the side plate closer to the side plate, the back side, the top surface, and the protruding portion are referred to as the third ear portion, and the third ear portion is referred to as the third ear portion. Of
Alternatively, among the top plates, the front surface of the paper container with a chuck is connected to the front surface of the top surface plate in the lateral direction of the blank plate. Of the areas divided by the diagonal fold line, the side plate closer to the side plate, the front surface, the top surface, and the protruding portion are referred to as the fourth ear portion, and the fourth ear is referred to as the fourth ear. Of the club charges
The blank plate of a paper container with a chuck according to claim 1 or 2, wherein at least one easily bent bending line is provided in at least one of the third ear portion and the fourth ear portion. .. In the area of the side plate of the upper stacking plate, which is the lateral end of the upper stacking plate of the blank plate, in at least one side plate of the upper stacking plate, an easy bending bending line is formed. The blank plate of a paper container with a chuck according to any one of claims 1 to 3, wherein at least one is provided. A paper container with a chuck formed by assembling the blank plates according to any one of claims 1 to 4.
When half-folded along the intermediate horizontal bending line, the chuck tape is joined to the laminated sheet at the position where the chuck tape joints are to overlap.
In addition, the side surface seal allowances on both sides that face each other when half-folded along the intermediate horizontal bending line are joined.
The overlapped upper overlapping plate is left, and the lower part thereof is spread back and forth by a horizontal bending line, and the top portion of the top plate and the top portion of the top plate are under the standing overlapping upper overlapping plate. Forming a body with a rectangular cross section, which is connected to the lower part of the top,
The standing upper stacking plate is bent to the back side and laid down, and the top surface protrusions protruding on both the left and right sides are bent to the body, and the top surface protrusions are said. Joined to the torso
A paper container with a chuck, characterized in that a bottom portion connected to the lower portion of the body portion is closed. The angle θ of the bent portion generated when the top surface protruding portions connected to the left and right sides of the top portion of the chucked paper container are joined to the body portion of the chucked paper container is an obtuse angle. The paper container with a chuck according to claim 5, wherein the paper container has a chuck. The chuck according to claim 6, wherein the angle θ of the bent portion generated when the top surface protruding portion is joined to the body portion of the paper container with a chuck is 100 ° or more and 160 ° or less. Attached paper container. The bent portion generated when the top surface protruding portion connected to the left and right sides of the top portion of the chucked paper container is joined to the body portion of the chucked paper container is bent in a curved line. The paper container with a zipper according to claim 5. The eighth aspect of the present invention, wherein the radius of curvature R of the bent portion generated when the top surface protruding portion is joined to the body portion of the chucked paper container is 1 mm or more and 10 mm or less. Paper container with chuck. The wall surface plate and the bottom plate are connected in series via a third horizontal bending line that crosses the blank plate in the lateral direction.
The bottom plate and the bottom edge seal allowance that serves as the upper and lower edge portions of the blank plate are continuously provided via a fourth lateral bending line that crosses the blank plate in the lateral direction.
The bottom surface seal allowances are joined to each other in the form of a gassho seal, and the joined bottom surface seal allowances are bent to the back side and laid down, and the bottom plate protrudes to both the left and right sides. The paper container with a chuck according to any one of claims 5 to 9, wherein the paper container is bent and joined to the alligator. The method for manufacturing a paper container with a zipper according to any one of claims 5 to 9.
A paper container with a zipper formed by assembling the blank plate made of a laminated sheet using paper as a base material, and the left and right edge portions of the blank plate are first vertically bent with a side surface seal allowance. Formed by lines,
An upper stacking plate, a top plate, a wall surface plate, and a bottom plate are sequentially provided vertically above and below the intermediate horizontal bending line, respectively, with the intermediate horizontal bending line in the middle portion in the vertical direction of the blank plate as a center. ,
The upper overlapping plate and the top plate are connected to each other via a first lateral bending line that crosses the blank plate in the lateral direction.
The top plate and the wall plate are connected to each other via a second lateral bending line that crosses the blank plate in the lateral direction.
The wall surface plate and the bottom plate are connected in series via a third horizontal bending line that crosses the blank plate in the lateral direction.
Side plates are continuously provided on the left and right sides of the wall plate via a second vertical bending line that vertically traverses the blank plate.
When the upper overlapping plate is half-folded along the intermediate horizontal folding line, the easy-opening processing line and the chuck tape joint portion are formed at the positions where they are expected to overlap each other as lateral opening means. It is provided in order from the line,
The wall surface plates 31a and 31b and the bottom plate 35a and 35b are continuously provided via third lateral bending lines 24a and 24b that cross the blank plate 95 in the lateral direction.
The bottom plate and the bottom edge seal allowance that serves as the upper and lower edge portions of the blank plate are continuously provided via a fourth lateral bending line that crosses the blank plate in the lateral direction.
At least one of the side plate of the top stacking plate, which is connected in the lateral direction of the blank plate of the top plate, and / or the side plate of the upper stacking plate, which is connected in the lateral direction of the upper stacking plate. The sheet is easily bent,
The process of forming the bottom surface into a folded shape in the intermediate stage where the seal allowance is unsealed and opens.
The contents are filled from the bottom of the chucked paper container in the intermediate stage of opening, the bottom surface seal allowances are joined to each other in the form of a gassho seal, and the joined bottom surface seal allowance is bent toward the back side. A method for manufacturing a paper container with a chuck, which comprises a step of bending a bottom plate protruding portion on both left and right sides and joining the bottom plate.

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