JP6288856B2 - Composite container, package and composite container manufacturing method - Google Patents

Description

  The present invention relates to a composite container comprising a resin film and a paper board and a method for producing the same.

  Conventionally, when providing food and confectionery, the contents are stored in a soft packaging material such as a plastic film, and the package is further stored in an outer packaging material (outer box) having rigidity such as paper. Is widely practiced. In such a composite container, it is possible to prevent the contents from being damaged by the outer packaging material while ensuring the gas and humidity barrier properties by the soft packaging material. Further, since the outer packaging material has shape retention, it can be displayed neatly at the time of over-the-counter sales.

  In the composite container as described above, first, the outer packaging material is opened to take out the package, and then the soft packaging material is opened to take out contents such as food and confectionery. At this time, if the contents cannot be consumed at one time and the rest is stored, the mouth of the soft packaging material is sealed by some means and stored in the outer packaging material again. However, since soft packaging materials do not have shape retention, their shape and volume have changed greatly from the original packaging, and not only can they be smoothly accommodated in outer packaging materials, but in some cases the outer packaging materials There is a problem that the shape is deformed or cannot be accommodated well. For this reason, once the conventional composite container is opened, it is used without the appearance of the outer packaging being excellent, or only the outer packaging has been discarded first.

  In addition, as a composite container composed of a soft wrapping material and an outer wrapping material, a container in which the outer peripheral surface of the soft wrapping material and the inner peripheral surface of the outer wrapping material are bonded is also known (for example, Patent Documents 1 and 2). ). These composite containers have been devised so that both the outer packaging material and the inner packaging material can be opened together to facilitate opening.

  However, the composite container described in Patent Document 1 mainly uses a method in which the contents are manually grasped when the container is opened and the contents are taken out, or the contents are dropped by tilting the container. Such fluid contents cannot be accommodated. Moreover, when taking out the contents, there is a problem that the hands are dirty, or there is a problem that it is difficult to adjust the taking-out amount when the contents are dropped.

  Moreover, since the composite container of patent document 2 tears a paper board and a laminated body film integrally along an opening line in a trunk | drum part, a composite container will be divided | segmented into two after opening. For this reason, when there is no reseal function and the contents cannot be consumed at once, there is a problem that the rest must be accommodated in another container.

JP 2000-211637 A JP 2000-229662 A

  In view of the above problems, the present invention has a gas barrier property, moisture proof property, shape retention property, impact resistance, easy opening property, resealing function, and a composite container that can be easily opened and taken out of its contents. Etc. to be provided.

  As a result of intensive investigations to solve the above problems, the present inventor has found that it is effective to bond a resin film and a paper board to form a gable roof type composite container, leading to the present invention. It was. That is, the present invention has the following configuration.

(1) A composite container having a gable top shape in which a paper board is bonded to the outer peripheral surface of a pillow type bag made of a resin film and having an end seal portion and a center seal portion,
At least the body part of the composite container has a paper board bonded to a resin film,
Above the composite container, the resin film and the paper board are folded together in a gusset shape so that the end of the resin film protrudes from the end of the paper board, and the end of the resin film is end-sealed. Forming part,
The inner peripheral surface of the paper plate of the composite container is bonded partially or entirely with the resin film below the end seal portion protruding from the end of the paper plate,
There is an unsealed resin film portion between the end seal portion and the end of the paper board, and the unsealed resin film portion is cut to provide a portion for taking out contents. Formed,
A spout for taking out contents by cutting off at least one of the left and right end portions of the end seal portion, opening the unsealed resin film portion, and pulling out the portion of the paper board that is folded into a gusset shape. And a portion that forms the spout can be folded back into a gusset shape after the composite container is opened to form the spout. container.
(2) A composite container having a gable top shape in which a paper board is bonded to the outer peripheral surface of a pillow type bag made of a resin film and having an end seal part and a center seal part,
At least the body part of the composite container has a paper board bonded to a resin film,
Above the composite container, the resin film and the paper board are folded together in a gusset shape so that the end of the resin film protrudes from the end of the paper board, and the end of the resin film is end-sealed. Forming part,
The inner peripheral surface of the paper plate of the composite container is bonded partially or entirely with the resin film below the end seal portion protruding from the end of the paper plate,
At least the inner surface of the resin film of the end seal portion is sealed with an easily openable resin layer or an easily openable resin film, and this seal portion has a portion for removing contents by peeling the seal portion. Formed,
A spout for taking out the contents by peeling off the portion of the end seal portion of the gusset portion that is sealed by the easy-open resin layer or the easy-open resin film and pulling out the portion of the paper board that is folded into the gusset shape. And the portion that forms the spout can be folded back again into a gusset shape after the composite container is opened and the spout is formed. .
(3) The composite container according to (1) or (2) above, wherein the body section of the composite container has a quadrangular shape.
(4) The composite according to any one of (1) to (3), wherein the paper board is not bonded to the outer peripheral surface including the end seal portion of the pillow type bag at the bottom of the composite container. container.
(5) The composite container according to any one of (1) to (4), wherein a folding line for folding the paper board into the gusset shape is provided.
(6) The composite container according to any one of (1) to (5), wherein a folding line for forming a main body outline of the composite container is provided on the paper board.
(7) The end of the paper board hits the root of the center seal part, and the center seal part is exposed on the outer peripheral surface of the paper board from between the end of the paper board and the other end of the paper board. The composite container according to any one of (1) to (6) above, wherein
(8) One end of the paper board abuts on the base of the center seal part, the center seal part overlaps on the outer peripheral surface of the end part, and the other end of the paper board is the center seal part. The composite container according to any one of the above (1) to (7), wherein
(9) The composite container according to any one of (1) to (8) above, wherein a cut or notch having a width equal to or greater than a center seal width is provided on a paper board at the bottom of the composite container.
(10) The composite according to any one of (1) to (9) above, wherein a non-adhesive portion is provided between the paper board and the resin film of the portion constituting the body portion of the composite container. container.
(11) The end seal portion of the resin film above the composite container has a vertical notch and a horizontal notch, and only a part of the end seal portion can be opened. The composite container according to any one of (10).
(12) The composite container according to any one of (1) to (11) above, wherein the paper board and the resin film of the composite container are bonded so as to be easily separated and separable. .
(13) Using a vertical pillow packaging machine that feeds a resin film from a film roll, forms a tube in the vertical direction, seals the center, seals the upper and lower ends of each pitch, and cuts to produce a pillow bag.
For each pitch, on the outer peripheral surface of the tube-shaped resin film, a sheet of paper sheets is overlapped so as to leave a resin film portion that forms an end seal portion above the composite container, and then at least a part is adhered, The composite container according to any one of (1) to (12) above, wherein the upper end of the tubular resin film is manufactured by being folded into a gusset shape while the paper board is bonded.
(14) Horizontal pillow packaging in which a resin film is fed out from a film roll, formed into a tube shape in the lateral direction, center-sealed, and the upstream or downstream end of each pitch is sealed and cut to produce a pillow bag. Using the machine
For each pitch, on the outer peripheral surface of the tube-shaped resin film, a sheet of paper sheets is overlapped so as to leave a resin film portion that forms an end seal portion above the composite container, and then at least a part is adhered, The composite container according to any one of (1) to (12) above, wherein the composite container is manufactured by being folded into a gusset shape while the resin film and the paper board are bonded together.
(15) A single-sheet composite sheet obtained by attaching a paper board to a resin film, and when the paper board is folded, a tubular body portion and a gable top shape at one end of the body portion It is a developed drawing shape that forms an end portion, and the resin film protrudes from an end portion that forms a gusset portion of the paper board to form an end seal portion when the paper board is folded. And a resin film after folding the composite sheet which is formed from the other end of the paper board to form the bottom of the container not covered with the paper board when it is end-sealed. Is sealed in a tube shape in the direction of travel, and the resin film and paper board are bonded to the resin film container bottom part and the composite sheet part forming the container gable top part. As-Gazette shape folding, then a composite container according to any one of the above (1) to (12), characterized in that the protruding resin film formed by produced by end seals.
(16) A continuous composite sheet obtained by pasting a paper board on a resin film, and when the paper board is folded, a cylindrical body and an end of a gable top shape at one end of the body The resin film protrudes from the end portion forming the gusset portion of the paper board to form an end seal portion when the paper board is folded. In addition, after the composite sheet is formed so as to project from the other end of the paper board and end-seal and form a container bottom that is not covered by the paper board, the resin film is folded into a cylindrical shape. Center seal so as to form a tube in the running direction, and the resin film and paper board are pasted together the part that forms the container bottom of the resin film and the composite sheet part that forms the container gable top part The remained Gazette shape folding, then a composite container according to any one of the above (1) to (12), characterized in that the protruding resin film formed by produced by end seals.
(17) A package comprising the composite container according to any one of (1) to (16) filled with contents.
(18) Using a vertical pillow wrapping machine that feeds a resin film from a film roll, forms a tube in the vertical direction, seals the center, seals the upper and lower ends of each pitch, and cuts to produce a pillow bag.
For each pitch, on the outer peripheral surface of the tube-shaped resin film, a sheet of paper sheets is overlapped so as to leave a resin film portion that forms an end seal portion above the composite container, and then at least a part is adhered, A method of manufacturing a composite container, wherein the upper end of the tubular resinous film is folded into a gusset shape while the paper board is bonded.
(19) A horizontal pillow packaging in which a resin film is fed out from a film roll, formed into a tube shape in the lateral direction, center-sealed, and the upstream or downstream end of each pitch is sealed and cut to produce a pillow bag. Using the machine
For each pitch, on the outer peripheral surface of the tube-shaped resin film, a sheet of paper sheets is overlapped so as to leave a resin film portion that forms an end seal portion above the composite container, and then at least a part is adhered, A method of manufacturing a composite container, wherein the resin film and the paper board are folded and manufactured in a gusset shape.
(20) A single-sheet composite sheet obtained by attaching a paper board to a resin film, and when the paper board is folded, a tubular body part and a gable top shape at one end of the body part The resin film has a shape such that an end portion is formed, and the resin film protrudes from an end portion forming a gusset portion of the paper board to form an end seal portion when the paper board is folded. And a resin film after folding the composite sheet which is formed from the other end of the paper board to form the bottom of the container not covered with the paper board when it is end-sealed. Is sealed in a tube shape in the direction of travel, and the resin film and paper board are bonded to the resin film container bottom part and the composite sheet part forming the container gable top part. As-Gazette shape folding, then method for producing a composite container, characterized in that the end seal the protruding resin film.
(21) A continuous composite sheet obtained by attaching a paper board to a resin film, and when the paper board is folded, a cylindrical body and an end of a gable top shape at one end of the body The resin film protrudes from the end portion forming the gusset portion of the paper board to form an end seal portion when the paper board is folded. In addition, after the composite sheet is formed so as to project from the other end of the paper board and end-seal and form a container bottom that is not covered by the paper board, the resin film is folded into a cylindrical shape. Center seal so as to form a tube in the running direction, and the resin film and paper board are pasted together the part that forms the container bottom of the resin film and the composite sheet part that forms the container gable top part The remained Gazette shape folding, then method for producing a composite container, characterized in that the end seal the protruding resin film.

  According to the present invention, there is provided a paper board and a resin film that have gas barrier properties, moisture proof properties, shape retention properties, impact resistance, easy opening properties, re-seal functions, and that can be easily opened and the contents taken out. An integrated composite container or the like can be provided.

It is a figure which shows an example of the composite container of this invention. It is a figure which shows an example of the state which cut off the end seal part above the composite container of this invention, and formed the spout. It is a figure which shows the example which provided the vertical notch and the horizontal notch in the end seal part of the resin-made film above the composite container of this invention. (A) It is a figure which shows another example of the composite container of this invention. (B) It is a figure which shows an example of the state which provided the notch in the bottom part of the trunk | drum part of the composite container of this invention. It is a figure which shows the structural example of the trunk | drum part cross section of the composite container of this invention. It is a figure which shows an example of a container lower part sectional view at the time of filling the lightweight container into the composite container of this invention. It is a figure which shows an example of a container lower part sectional view at the time of filling the content of weight in the composite container of this invention. It is a figure which shows the upper side figure of the conventional gable top type container. It is a figure which shows the upper side figure of an example of the composite container of this invention. (A) It is a figure which shows an example of the cross-section of the heat seal part of the gusset part of the composite container of this invention. (B) is a figure which shows the other example of the cross-section of the heat seal part of the gusset part of the composite container of this invention. It is a figure which shows an example of the state which peeled the sealed part of the end seal part above the composite container of this invention, and formed the spout. It is a graph which shows the result of having confirmed that the composite container of this invention was equipped with moisture resistance by Experimental example 1. FIG. It is a graph which shows the result of having confirmed that the composite container of this invention was equipped with moisture resistance by Experimental example 2. FIG.

Hereinafter, the present invention will be described in detail with reference to the drawings.
The composite container of the present invention is a composite container having a gable top shape in which a paper board is bonded to the outer peripheral surface of a pillow type bag made of a resin film and having an end seal part and a center seal part. As shown in FIG. 1, at least the body portion of the composite container has a paper board bonded to the outer peripheral surface of the resin film, and the resin film and the paper board are from the end of the paper board above the composite container. The end of the resin film is folded into a gusset shape so that the end of the resin film is stuck so as to protrude, and the end of the resin film forms an end seal portion. It is bonded partially or entirely to the resin film below the end seal part protruding from the end of the paper board.

The present invention has the above-described configuration as a basic configuration, but there are two embodiments as a structure for taking out the contents.
In the first embodiment, the end seal portion is cut so that a portion of the paper board folded into a gusset shape can be pulled out, and a spout for taking out contents is formed.
In the second embodiment, the end seal portion is sealed via an easily openable resin layer or an easily openable resin film, and when the portion of the paper board that is folded into the gusset shape is pulled out, the end seal portion of the gusset portion It is a structure which peels the part sealed with the easily openable resin layer or the easily openable resin film, and forms the spout for taking out the content.

First, the first embodiment will be described.
As shown in FIG. 2, in the end seal portion of the resin film protruding from the end portion of the paper board above the composite container, by cutting at least one of the left and right end portions of the end seal portion, the gusset shape of the paper board The portion folded in can be pulled out, and a spout for taking out the contents can be formed. At this time, since the paper board above the composite container with the gable roof shape and the resin film are bonded, when the paper board folded in the gusset shape is pulled out, the resin film is pulled out integrally and the composite container opens. A spout is formed.

  Thus, the composite container of the present invention is a resin film end seal projecting from the paper board above the composite container, in contrast to the conventional method of opening the seal layer such as a gable top type beverage container by interfacial peeling. It is opened by a technique of cutting at least part of the part. It is not necessary to remove all of the end seal part as in a general soft packaging material. In the case of the composite container shown in FIG. 2, the end seal part on one side centered on the center seal part on the end seal part is provided. The spout of the composite container can be formed by cutting. Further, in the case of a composite container in which the body section of the composite container has a rectangular shape instead of a square shape, the spout of the composite container is formed by cutting off at least one of the left and right ends of the end seal portion. be able to.

  As described above, since the composite container of the present invention cuts a part of the end seal part above the container to form a spout, a vertical notch and a horizontal notch are formed on the end seal part of the resin film above the composite container. It is preferable to form a notch (see FIG. 3). Accordingly, the end seal portion can be easily cut out by hand without using a tool such as a scissors.

  Furthermore, at the time of opening from the horizontal notch, the upper end portion (side) of the paper board below the end seal portion exerts the effect of a cut meandering prevention guide below the container. In order to exhibit the guide function satisfactorily, it is preferable that the end portion of the paper board is bonded to the resin film in the vicinity of the end seal portion of the resin film above the composite container. The distance between the end seal portion above the composite container and the end portion of the paper board is not particularly limited, but if it is about 2 mm to 5 mm, the guide function by the upper end portion of the paper board is satisfactorily exhibited. The lateral notch is preferably provided on the paper board side on the end seal portion.

  Further, when opening from the vertical notch, the center seal portion on the end seal portion exhibits the effect of a meandering prevention guide in the non-opening direction. From this viewpoint, it is preferable that the vertical notch is provided in the vicinity of the center seal portion on the end seal portion of the resin film.

Next, a second embodiment will be described.
In the present embodiment, at least the inner surface of the resin film that forms the end seal portion is coated with an easy-open resin layer or an easy-open resin film is laminated. FIG. 10 is a view showing a cross section of the end seal portion when such a resin film is folded into a gusset shape.

The resin film 64 is folded in a gusset shape on both sides, and forms a gusset portion 84 by overlapping four sheets. An easily openable resin layer is coated on the inside of the resin film or an easily openable resin film is laminated, and an easily openable seal portion 82 is formed. In addition, what was shown to FIG. 10 (A) is the easily peelable resin layer coated on the outer surface of the resin film, or the easily openable resin film is laminated | stacked, and easily peelable adhesion to a gusset part It is an example of the container of this invention in which the part 83 is formed.
FIG. 10B shows another example of the container of the present invention, in which an easily openable resin layer is coated on the outer surface of the resin film or an easily openable resin film is laminated. Therefore, the easily peelable adhesive portion 83 as shown in FIG. 10A is not formed.
Forming the easily peelable adhesive portion 83 as shown in FIG. 10 (A) is not an essential requirement of the present invention, but is preferable in terms of the appearance of the container.

A spout for taking out the contents can be formed by peeling the easy-open seal portion 82 by tensile stress when pulling out the portion of the paper board that has been folded into a gusset shape.
FIG. 11 is a view showing a state in which a spout for taking out contents is formed by peeling off the easy-open seal part 82 in the container of the type shown in FIG.
In this case, opening is facilitated by adopting the following configuration (1) or (2).
(1) Between the easy-opening resin layer or the easy-opening resin film of the end seal part located in the gusset part, the situation where the release agent is applied and not sealed at the position of the upper half of the central part viewed from the side of the box Then, the user can put a finger on it to peel off the easy-open resin layer or the easy-open resin film so that it can be opened.
(2) When forming the end seal part, perform sealing using an end seal bar shaped so that an unsealed part is formed in the upper half of the center as viewed from the side of the box, and put your finger on the unsealed part. The easy-open resin layer or the easy-open resin film is peeled off so that it can be opened.
In this embodiment, since the end seal portion of the resin film remains without being cut, the moisture resistance after opening is superior to that of the first embodiment.
In addition, the configuration in the second embodiment may be added to the first embodiment so that two types of opening methods can be selected.

Since the spout is formed in the composite container of the present invention as described above, the contents can be taken out simply by tilting the main body with the hand. For this reason, without taking out the contents when taking out the contents, and even if the contents have fluidity such as liquids and granules, by adjusting the shape of the spout and the inclination of the body The content can be prevented from scattering and the amount to be taken out can be adjusted easily.
The body portion of the composite container preferably has a square cross section, and more preferably has a square or rectangular shape (rectangular shape). Thereby, since the trunk | drum part of a composite container main body becomes prismatic shape, it is easy to take in a hand and handling property improves. For this reason, it is preferable that a folding line for forming the outer shape of the main body is provided on the paper board of the body portion of the composite container.

  In the composite container of the present invention, the composite container can be closed by folding the paper board from which the spout has been drawn back into a gusset shape again (see FIG. 2). At this time, the composite container of the present invention can exhibit a good resealing function due to the rigidity and elasticity of the paper board adhered to the main body, even if the opening is not provided with a part such as a chuck. In particular, the paper board is preferably provided with a fold line (folded ruled line) for folding into a gusset shape. By providing the fold line, the spout of the composite container can be formed more easily, and a good resealing function is exhibited.

  The bottom of the composite container may or may not be attached to the end seal part of a pillow-type bag made of a resin film. It is excellent in properties and preferable. In addition, since the amount of paper board required for manufacturing the composite container can be reduced, it is environmentally friendly and contributes to a reduction in manufacturing cost due to material reduction. In this case, the end of the paper board constituting the side surface (body part) of the composite container has a structure that supports the composite container, and the bottom of the composite container is not formed on the bottom of the composite container. In addition, when the end seal part of the resin film and the paper board are not bonded to each other at the bottom of the composite container, the end seal part of the resin film does not protrude from the end of the paper board and fits inside the composite container. The configuration is preferable.

  Furthermore, the composite container of the present invention, in one aspect thereof, has an end of the paper board that is in contact with the base of the center seal portion of the pillow-type bag and is in contact with the base of the center seal portion. It is preferable that the center seal portion is exposed on the outer peripheral surface of the paper board from between the other end portion (see FIG. 4A). Thereby, when manufacturing the composite container of this invention, since positioning of a pillow type bag and a paper board becomes easy, industrial productivity can be improved.

However, when the center seal portion wraps around the bottom of the paper board at the bottom of the composite container, the center seal portion on the outer peripheral surface of the composite container causes a step or rebound due to thickness at the bottom of the composite container. For this reason, there is a risk that the contents of the container will be scattered due to the container falling over because the container itself will be hindered during storage after opening the composite container or when the container is temporarily placed in the spout formation state when the contents are taken out. May occur. In particular, when the weight of the contents is relatively light, the center seal portion at the bottom of the composite container cannot be pressed against the grounding surface, so that the self-supporting property of the container is deteriorated.
In such a case, it is preferable to provide a notch or notch with a width of at least the width of the center seal on the lower side of the composite container covered with the center seal portion (see FIG. 4B). . Thereby, when making a composite container self-supporting, the level | step difference and repulsive force by the thickness of a center seal part can be escaped.

FIG. 5 shows a cross-sectional view of a configuration example of the body portion of the composite container of the present invention.
FIG. 5A is a cross-sectional view of the body portion of the composite container shown in FIG. 4, and the center seal portion of the pillow type bag made of a resin film is exposed to the outer surface of the composite container from the abutting portion of the paper board on the outer periphery of the composite container. Represents a state. FIG. 5B shows a state in which one end of the paper board is abutted against the base of the center seal part of the pillow type bag and the other end is pasted so as to cover the center seal part. ing. In this case, the position of the end portion of the paper board covering the center seal portion of the pillow type bag may be aligned with the end portion of the center seal portion, or as shown in FIG. You may form longer than an edge part.

FIGS. 5C to 5H show a state in which the center seal portion of the pillow type bag is not exposed on the outer surface of the composite container and is housed inside the outer surface of the composite container made of paper board.
FIG. 5C is a cross-sectional view of the composite container body portion in a state where the butted portion of the paper board overlaps the center seal portion of the pillow type bag. FIG. 5D shows a state where the butted portion of the paper board is displaced from the center seal portion of the pillow type bag. Further, FIG. 5E shows a state in which the end portions of the paper plates are overlapped so that the center seal portion of the pillow type bag fits inside the composite container. FIG. 5F shows a state in which the center seal portion of the pillow type bag is displaced from the lateral center portion of the side surface of the composite container.
FIG. 5G shows a state where the center seal portion of the pillow type bag and the butting portion of the paper board are displaced from each other, and both are displaced from the lateral center of the side surface of the composite container. 5 (H) and 5 (I) show a state where the center seal portion of the pillow type bag and the butted portion of the paper board are overlapped with each other and are shifted from the lateral center of the side surface of the composite container.

  In the case of the composite container of the type shown in FIGS. 5A and 5B, the center seal portion wraps around the bottom of the paper board at the bottom of the composite container. It is preferable to provide a notch or notch with a width of at least the width of the center seal on the lower paper board on the side of the composite container covered with (see FIG. 4B).

  In addition, when the contents are relatively light, it is preferable to provide a non-adhesive portion between the paper board and the resin film constituting the body portion of the composite container. FIG. 6 shows a cross-sectional view of an example in which the paper board is not bonded to the outer peripheral surface of the resin film at the bottom of the composite container, and a non-adhesive part is provided between the paper board of the composite container body and the resin film. . If the contents are lightweight, an end seal is applied in the direction in which the pillow-type bag inside the composite container is raised and bottomed by placing a non-adhesive part between the paper board and the resin film, and the composite container is about to fall down. The repulsive force of the part can be released and the self-supporting property of the composite container can be ensured satisfactorily.

In addition, as shown in FIG. 7, when the contents are heavy, it is not necessary to provide a non-adhesive part between the paper board and the resin film of the part that constitutes the body part of the composite container. . In this case, since the entire bottom surface of the composite container (the bottom portion of the pillow type bag) is self-supporting, damage to the paper board due to its own weight can be suppressed and stability can be ensured. The paper board helps to stabilize the composite container.
As described above, the composite container of the present invention can ensure high self-supporting stability and container strength by appropriately setting the adhesion range between the paper board and the resin film according to the weight of the contents.

  Further, in another aspect of the composite container of the present invention, the end of the paper board hits the base of the center seal part of the pillow type bag, and the center seal part overlaps on the outer peripheral surface of the end of the paper board. It is preferable that the end portion on the opposite side to the end portion of the abutting paper board covers the center seal portion. As a result, the center seal portion of the pillow type bag is not exposed on the surface of the paper board, so that the printing surface of the paper board is not hidden by the center seal portion, and the aesthetics of the composite container can be enhanced. FIG. 1 and the like are examples in which the paper board covers the center seal portion and the center seal portion is not exposed on the composite container surface.

  Further, as described above, the composite container of the present invention can make the cross section of the body portion not only a square but also a quadrangle such as a rectangle, so that the design can have a degree of freedom. Conventional gable-top type containers typified by beverage packs are end-sealed by folding the paper into a gusset shape, so the gussets folded inward from the left and right are sealed together so that the apexes are attached to each other. It is necessary to minimize the gap between the surfaces (see FIG. 8A). If this is not done, there will be a gap between the papers facing each other other than the part folded on the gusset, and it is very difficult to seal the paper without the gap. For this reason, there exists a restriction | limiting that the cross section of a container is made into a substantially square (refer FIG. 8 (B)).

  On the other hand, the composite container of the present invention seals the part of the resin film on which the paper board is not bonded (end seal part above the composite container), so even if the body section of the composite container is not square, Only the thickness of the folded resin film is generated in the gap between the sealing surfaces. Since the resin film has flexibility, the gap is easily filled, and sealing can be performed by flowing a sealant. For this reason, it is possible to obtain a stable sealing performance even if the cross section of the body portion of the composite container is not square, as in the case of gusset packaging in soft packaging with a general resin film that is currently seen, and the design characteristics of the composite container Can be increased (see FIG. 9).

  A synthetic resin or a plant-derived resin may be used. Owing to the gas barrier property of the resin film, it is possible to prevent the contents before being opened from being oxidized and moisture absorption.

As the synthetic resin film, for example, OPP, CPP, PET, VM-PET and the like can be preferably used. Moreover, as a film made from plant origin resin, PLA, PVA, etc. can be utilized preferably, for example.
Although the thickness of these resinous films is not particularly limited, for example, those having a thickness of about 30 μm to 80 μm can be preferably used.

  In addition, the contents of the composite container of the present invention are not limited in any way, and can be stored regardless of food, confectionery, beverages, detergents, chemicals, solids, granules, and liquids. It is. For example, cereal foods such as corn flakes, snacks, pet foods and the like can be satisfactorily accommodated.

  In addition, the composite container of the present invention can easily separate the paper board and the resin film by bonding the paper board and the resin film with an easily peelable adhesive or by using an adhesive in a spot shape. It can facilitate the separate collection of garbage.

The composite container of this invention can be manufactured using the pillow packaging machine which manufactures the conventional pillow type bag. The pillow wrapping machine to be used may be either a vertical pillow wrapping machine or a horizontal pillow wrapping machine.
When using a vertical pillow wrapping machine, a vertical pillow is drawn out from a film roll, formed into a tube shape in the vertical direction, center sealed, sealed at the upper and lower ends of each pitch, and cut into a pillow bag. Using a packaging machine, for each pitch, at least one sheet of paper plate is overlapped so that a resin film portion that forms an end seal portion above the composite container is left on the outer peripheral surface of the tubular resin film. Then, the upper end portion of the tube-shaped resin film can be folded into a gusset shape while the paper board is bonded.
In the case of using a horizontal pillow wrapping machine, the resin film is unwound from the film roll, formed into a tube shape in the horizontal direction and center-sealed, and the upstream or downstream end of each pitch is sealed and cut. Using a horizontal pillow wrapping machine that manufactures pillow bags, a single wafer is left for each pitch so that a resin film portion that forms an end seal portion above the composite container is left on the outer peripheral surface of the tubular resin film. Can be manufactured by folding the paper board and adhering at least a part thereof, and then folding the paper board into a gusset shape while the resin film and the paper board are bonded together.

In addition, in the case of producing the composite container of the present invention using either a vertical pillow wrapping machine or a horizontal pillow wrapping machine, the center seal part of the pillow type bag made of a resin film is the center part of the back surface of the paper board. Further, they may be shifted in either direction and overlap. Thereby, as shown in FIG. 5D or FIG. 5F, a composite container in which the butted portion of the paper board and the center seal portion of the pillow-type bag made of the resin film are displaced can be manufactured.
That is, if the composite container is formed such that the center seal portion of the pillow type bag is shifted from the center portion of the paper board and overlapped, the butted portion of the paper board is shifted from the lateral center portion of the side surface of the composite container. If the composite container is formed so that the butted portion of the paper board is positioned at the lateral center of the composite container side surface, the result is as shown in FIG. Further, as shown in FIG. 5G, the butted portion of the paper board is shifted from the lateral center of the side surface of the composite container, and the center seal portion of the pillow type bag made of resin film is also centered in the lateral direction of the side surface of the composite container. You may form a composite container so that it may slip | deviate from a part. Further, as shown in FIGS. 5 (H) and 5 (I), the paper plate butting portion and the center seal portion of the pillow bag made of a resin film are overlapped with each other and shifted from the lateral center of the side surface of the composite container. Thus, a composite container may be formed.

In the above description, the method for producing a composite container by using a vertical pillow machine or a horizontal pillow machine to feed out a resin film from a film roll has been described. However, a single sheet of paper board is applied to the entire surface of the paper board. Alternatively, a composite container can also be manufactured by using a partially laminated single-wafer composite film.
In this method, first, a single sheet is attached to a single resin film to obtain a composite sheet. In this case, when the paper board is folded in the same manner as when manufactured by a pillow machine, a developed view in which a cylindrical body and a gable top end at one end of the body are formed. It has a shape. Also, the resin film protrudes from the end of the paper board where the gusset part is formed to form an end seal when the paper board is folded, and protrudes from the other end of the paper board to end. A bottom surface of the container which is sealed and not covered with the paper board is formed.
Such a composite sheet is folded into a cylindrical shape, and then center-sealed so that the resinous film becomes a tube shape in the running direction. Next, the portion of the resin film that forms the container bottom surface and the composite sheet portion that forms the container gable top portion are folded into a gusset shape while the resin film and the paper board are bonded together, and then the protruding resin film is Composite containers can be manufactured by end sealing.

  In the above, a composite sheet made by sticking a single sheet of paper to a single resin film was used. However, a vertical pillow machine is a composite sheet made by sticking a large number of single sheets of paper to a long resin film. Or it can also supply to a horizontal pillow machine and can manufacture a composite container continuously. In this case, after the composite sheet is folded into a cylindrical shape, the resin film is center-sealed so that it is tube-shaped in the running direction, and the composite film forming the container bottom portion of the resin film and the container gable top portion The composite container can be manufactured by folding the sheet portion into a gusset shape while the resin film and the paper board are bonded together, then end sealing the protruding resin film and cutting the end seal portion. .

  Below, the result of having confirmed by experiment that the composite container of this invention exhibits favorable moisture-proof property by making a spout close after opening a container is shown.

[Experimental Example 1]
Using the above-described vertical pillow packaging machine, two composite containers as shown in FIG. 4B were produced. In the composite container, the center seal portion of the pillow type bag is exposed from the end of the paper board on the outer peripheral surface of the composite container, and the bottom of the composite container is cut into the paper board portion covered by the exposed center seal part. Provided. Also, coated balls were used for the paper plates, and PET # 12 / VMPET # 12 / LLDPE # 50 were used for the resin films. Both composite containers weighed 40.00 g, and the capacity of the composite container body was 80 mm × 80 mm × 150 mm. In both composite containers, the height of the gable roof portion above the composite container was 30 mm.

In the end seal part above the composite container produced above, only one side was opened with the center seal part as the center, and the spout was formed by pulling out the part folded in a gusset shape. From the spout, 100.00 g (Gross 140.00 g) of A-type silica gel was added.
And the thing with which the said spout was formed was made into the container [a], and what changed the spout into the gusset shape again was made into the container [b], and the weight change of each container was measured with time. The results are shown in Table 1, and the moisture-proof effect verification data in graph form is shown in FIG.

  As shown in Table 1 and FIG. 12, it was confirmed that the composite container of the present invention has a significantly moisture-proof effect as compared with the case where the spout is still formed even if the spout is folded back again.

[Experiment 2]
In the same manner as in Experimental Example 1, two composite containers as shown in FIG.
Unlike the experimental example 1, all of the end seal portion above the composite container was cut off. And the part folded on the right and left gusset of the composite container upper part was pulled out, and the upper part of the composite container was fully opened. 100.00 g (Gross 140.00 g) of silica gel was charged from the top of the fully opened composite container.
Then, with the pour spout fully opened, the container [c] was used, and the left and right sides drawn out were again folded into gussets, and the container [d] was used to measure changes in the weight of each container over time. did. The results are shown in Table 2, and the moisture-proof effect verification data in graph form is shown in FIG.

  As shown in Table 2 and FIG. 13, the composite container of the present invention is a case where the upper end seal part is cut out and the parts folded in the gusset shape on both the left and right sides are pulled out to fully open the upper part of the composite container. However, it was confirmed that even if the left and right side portions were folded back on the gusset again, the moisture-proofing effect was significantly improved compared to the case where it was left fully open.

DESCRIPTION OF SYMBOLS 11 Paper board 12 End seal part of resin film 13 Upper part of composite container folded in gusset shape 14 Unsealed resin film part 31 Vertical notch 32 Horizontal notch 41 Notch or notch 61 Paper board 62 End seal of resin film Part 63 Center seal part of resin film 64 Resin film 65 Part where paper board and resin film are bonded 71 Paper board 72 End seal part of resin film 73 Center seal part of resin film 74 Resin film 81 Gap 81 'Minimized gap 82 Easy-to-open seal part 83 Easy-to-release adhesive part 84 Gusset part 85 Gusset innermost part 91 Sealed part by sealant flow

Claims (21)

A composite container having a gable top shape in which a paper board is bonded to the outer peripheral surface of a pillow type bag made of a resin film and having an end seal portion and a center seal portion,
At least the body part of the composite container has a paper board bonded to a resin film,
Above the composite container, the resin film and the paper board are folded together in a gusset shape so that the end of the resin film protrudes from the end of the paper board, and the end of the resin film is end-sealed. Forming part,
The inner peripheral surface of the paper plate of the composite container is bonded partially or entirely with the resin film below the end seal portion protruding from the end of the paper plate,
There is an unsealed resin film portion between the end seal portion and the end of the paper board, and the unsealed resin film portion is cut to provide a portion for taking out contents. Formed,
A spout for taking out contents by cutting off at least one of the left and right end portions of the end seal portion, opening the unsealed resin film portion, and pulling out the portion of the paper board that is folded into a gusset shape. And a portion that forms the spout can be folded back into a gusset shape after the composite container is opened to form the spout. container. A composite container having a gable top shape in which a paper board is bonded to the outer peripheral surface of a pillow type bag made of a resin film and having an end seal portion and a center seal portion,
At least the body part of the composite container has a paper board bonded to a resin film,
Above the composite container, the resin film and the paper board are folded together in a gusset shape so that the end of the resin film protrudes from the end of the paper board, and the end of the resin film is end-sealed. Forming part,
The inner peripheral surface of the paper plate of the composite container is bonded partially or entirely with the resin film below the end seal portion protruding from the end of the paper plate,
At least the inner surface of the resin film of the end seal portion is sealed with an easily openable resin layer or an easily openable resin film, and this seal portion has a portion for removing contents by peeling the seal portion. Formed,
A spout for taking out the contents by peeling off the portion of the end seal portion of the gusset portion that is sealed by the easy-open resin layer or the easy-open resin film and pulling out the portion of the paper board that is folded into the gusset shape. And the portion that forms the spout can be folded back again into a gusset shape after the composite container is opened and the spout is formed. .   The composite container according to claim 1 or 2, wherein the body section of the composite container has a quadrangular shape.   The composite container according to claim 1, wherein at the bottom of the composite container, the paper board is not bonded to an outer peripheral surface including an end seal part of the pillow type bag.   The composite container according to any one of claims 1 to 4, wherein a folding line for folding the paper board into the gusset shape is provided.   The composite container according to claim 1, wherein a folding line for forming a main body outline of the composite container is provided on the paper board.   The end of the paper board abuts the base of the center seal part, and the center seal part is exposed on the outer peripheral surface of the paper board from between the end of the paper board and the other end of the paper board. The composite container according to any one of claims 1 to 6.   One end of the paper board abuts on the base of the center seal part, the center seal part overlaps on the outer peripheral surface of the end part, and the other end of the paper board covers the center seal part The composite container according to any one of claims 1 to 7, wherein:   The composite container according to any one of claims 1 to 8, wherein a cut or notch having a width of at least a center seal width is provided on a paper board at the bottom of the composite container.   The composite container according to any one of claims 1 to 9, further comprising a non-adhesive portion between the paper board and the resin film in a portion constituting the body portion of the composite container.   The end seal portion of the resin film above the composite container has a vertical notch and a horizontal notch, and only a part of the end seal portion can be opened. A composite container according to 1.   The composite container according to any one of claims 1 to 11, wherein the paper board and the resin film of the composite container are bonded so as to be easily separated and separable. Using a vertical pillow wrapping machine that draws out a resin film from a film roll, forms a center seal in a tube shape in the vertical direction, seals the upper and lower ends of each pitch, and cuts to produce a pillow bag,
For each pitch, on the outer peripheral surface of the tube-shaped resin film, a sheet of paper sheets is overlapped so as to leave a resin film portion that forms an end seal portion above the composite container, and then at least a part is adhered, The composite container according to any one of claims 1 to 12, wherein an upper end portion of the tube-shaped resin film is manufactured by being folded into a gusset shape while the paper board is bonded. Using a horizontal pillow wrapping machine that draws a resin film from a film roll, forms a tube in the horizontal direction, performs center sealing, seals the upstream or downstream end of each pitch, and cuts to produce a pillow bag. And
For each pitch, on the outer peripheral surface of the tube-shaped resin film, a sheet of paper sheets is overlapped so as to leave a resin film portion that forms an end seal portion above the composite container, and then at least a part is adhered, The composite container according to claim 1, wherein the composite container is manufactured by being folded into a gusset shape while the resin film and the paper board are bonded together.   A sheet-fed composite sheet obtained by sticking a paper board to a resin film, and when the paper board is folded, a cylindrical body part and an end part of a gable top shape at one end part of the body part, When the paper board is folded, the resin film protrudes from the end part forming the gusset part of the paper board to form an end seal part. In addition, after the composite sheet is formed so as to protrude from the other end of the paper board and form a container bottom surface that is not covered with the paper board when end-sealed, the resin film is folded in a cylindrical shape, The resin film and the paper board are bonded together with the part that forms the container bottom of the resin film and the composite sheet part that forms the container gable top part. Georgette shape folding, then a composite container according to any one of claims 1 to 12, characterized in that the protruding resin film formed by produced by end seals.   A continuous composite sheet obtained by adhering a paper board to a resin film, and when the paper board is folded, a cylindrical body and a gable top-shaped end of one end of the body It is a developed drawing shape that is formed, and when the paper film is folded, the resin film protrudes from an end portion that forms the gusset portion of the paper plate and forms an end seal portion. After the composite sheet, which protrudes from the other end of the paper board and is end-sealed to form the bottom surface of the container not covered with the paper board, is folded into a cylindrical shape, the resin film is moved in the running direction. Center seal so as to form a tube, and the resin film and paper board are bonded together on the part that forms the container bottom of the resin film and the composite sheet part that forms the container gable top. Gazette shape folding, then a composite container according to any one of claims 1 to 12, characterized in that the protruding resin film formed by produced by end seals.   A package comprising the composite container according to any one of claims 1 to 16 filled with contents. Using a vertical pillow wrapping machine that draws out a resin film from a film roll, forms a center seal in a tube shape in the vertical direction, seals the upper and lower ends of each pitch, and cuts to produce a pillow bag,
For each pitch, on the outer peripheral surface of the tube-shaped resin film, a sheet of paper sheets is overlapped so as to leave a resin film portion that forms an end seal portion above the composite container, and then at least a part is adhered, A method of manufacturing a composite container, wherein the upper end of the tubular resinous film is folded into a gusset shape while the paper board is bonded. Using a horizontal pillow wrapping machine that draws a resin film from a film roll, forms a tube in the horizontal direction, performs center sealing, seals the upstream or downstream end of each pitch, and cuts to produce a pillow bag. And
For each pitch, on the outer peripheral surface of the tube-shaped resin film, a sheet of paper sheets is overlapped so as to leave a resin film portion that forms an end seal portion above the composite container, and then at least a part is adhered, A method of manufacturing a composite container, wherein the resin film and the paper board are folded and manufactured in a gusset shape.   A sheet-fed composite sheet obtained by sticking a paper board to a resin film, and when the paper board is folded, a cylindrical body part and an end part of a gable top shape at one end part of the body part, When the paper board is folded, the resin film protrudes from the end part forming the gusset part of the paper board to form the end seal part. In addition, after the composite sheet is formed so as to protrude from the other end of the paper board and form a container bottom surface that is not covered with the paper board when end-sealed, the resin film is folded in a cylindrical shape, The resin film and the paper board are bonded together with the part that forms the container bottom of the resin film and the composite sheet part that forms the container gable top part. Georgette shape folding, then method for producing a composite container, characterized in that the end seal the protruding resin film.   A continuous composite sheet obtained by adhering a paper board to a resin film, and when the paper board is folded, a cylindrical body and a gable top-shaped end of one end of the body It is a developed drawing shape that is formed, and when the paper film is folded, the resin film protrudes from an end portion that forms the gusset portion of the paper plate and forms an end seal portion. After the composite sheet, which protrudes from the other end of the paper board and is end-sealed to form the bottom surface of the container not covered with the paper board, is folded into a cylindrical shape, the resin film is moved in the running direction. Center seal so as to form a tube, and the resin film and paper board are bonded together on the part that forms the container bottom of the resin film and the composite sheet part that forms the container gable top. Gazette shape folding, then method for producing a composite container, characterized in that the end seal the protruding resin film.

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