JP2012030884A - Liquid container and lid therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid container that can be easily pierced by a straw and whose contents are hard to be leaked or decomposed because of breakage of the container until opening, and to provide a lid that can be used for sealing the liquid container.SOLUTION: The liquid container includes at least a base material layer and a barrier layer, and the base material layer is provided with a cutting section wherein it is partly cut to piercing the container by a straw. Furthermore, the base material layer is preferably not removed in the cutting section thereof. The liquid container also includes an opening and a lid for sealing the opening, and the cutting section provided in the base material layer may be provided in the lid.

Description

  In a container for drinking by inserting a straw, it relates to a container in which the piercing strength is partially reduced to facilitate insertion of the straw.

  In the case of beverage packaging containers having a sealed structure, there are two types of containers that can be used for drinking: a container with a mouth directly attached to the container (a direct drinking container) and a container for drinking with a straw.

  Examples of the container that can be directly swallowed include a cup-shaped container body and a lid that seals the opening, and the widened cup is removed by removing the portion that is the lid. A container that can drink the contents from the top, or a partial opening that serves as a drinking mouth on a part of the lid or a part of the container, this opening is sealed with a lid (partial lid), and this (partial) lid is There is a container that can be peeled off and drink the contents from the partial opening.

  In the case of the above-described container that can be directly drunk, not only direct drinking but also when using a straw, a sufficiently large opening area can be formed compared to the cross-sectional area of the straw, so that the straw can be inserted into the container without resistance.

On the other hand, there is also a container that can stab a straw directly into a container body or a lid portion including a partial lid without opening a direct drinking mouth and drink an internal beverage.
Such a container does not have a large opening, and the opening between the straw and the lid or between the straw and the container is narrow, so there is little risk of liquid leaking even if the container is shaken or tilted. Suitable for carrying and enclosing beverages for children. Moreover, the contents can be pushed out by pushing the container body even in a state where a straw is stabbed.
As a container that can be pierced by a straw, in particular, it is preferable from the viewpoint of processing of the container and storage of beverages to have a structure in which only the lid portion can be pierced by straw, and thus various devices have been applied.

In a container in which a straw is pierced directly into the lid portion, the entire lid portion is formed with such a strength that can be pierced by a straw, so that the strength of the lid portion is low. Therefore, before opening, there is a problem that a hole is opened in the lid due to the contact of the protrusion, and the contents leak or rot. If the strength of the lid portion itself is increased to prevent this, it becomes difficult to perforate with a straw, and a special straw having a high strength is required. This problem is the same in the case where a partial lid is further provided in the lid and the partial lid is perforated with a straw (see Prior Art Document 1).
In order to reduce the strength of the lid, a protective measure such as covering with a plastic cap is taken to compensate for the weakness of the strength.

As a proposal for facilitating the piercing of a straw, there is a method in which a cover made of a laminated sheet of a plastic film substrate and an easy peel resin layer is cut only in the plastic film substrate layer of the laminated sheet (preceding) (See Technical Document 2).
Moreover, a method of providing a hole in a part of the laminated film has also been proposed (see Prior Art Document 3)
However, in these methods, since the easy-peeling resin layer with low strength is exposed because a part of the plastic base material is cut out, there is still a risk of damage to the lid.

Utility Model Registration No. 2594337 JP 7-61469 A Japanese Patent Laid-Open No. Sho 63-313570

  According to the present invention, a liquid container and a lid that can be used for sealing a liquid container that are easy to perforate with a straw and that do not break the container until the container is opened to leak or rotify the contents. It is an issue to provide.

In order to solve the above problems, the inventors have made an invention having the following configuration.
1st invention is the container for liquid provided with the base material layer and the barrier layer at least, Comprising: The said base material layer is provided with the cutting part partly cut | disconnected so that the said container can be straw-pierced A liquid container.
Furthermore, it is preferable that the base material layer is not removed from the cut portion of the base material layer.
The liquid container may include an opening and a lid for sealing the opening, and the cutting portion included in the base material layer may be provided in the lid.

  According to a second aspect of the present invention, there is provided a lid for sealing the opening of the liquid container, the lid comprising a base material layer, a barrier layer, and a heat-sealing layer, and the base material layer includes a straw A lid for a liquid container, characterized in that it comprises a cutting part partly cut in order to enable perforation.

  ADVANTAGE OF THE INVENTION According to this invention, the liquid container which can pierce | paste a straw easily and can take out the content can be provided, without impairing the intensity | strength of the liquid container or the whole lid | cover.

According to the present invention, since the base material layer is cut for a part of the container, the barrier layer can be protected by the base material layer while being easily pierced by a straw, Touching can prevent the container from being damaged.
Furthermore, by making the cutting part capable of punching straw into a part of the container or the lid, the size of the opening can be arbitrarily limited, and the opening is widened and the contents are not spilled when opening by opening the straw. be able to.

  Furthermore, since the barrier layer and the heat-sealing layer are not exposed to the outside of the container by not removing the base material layer at the cut portion, the barrier layer and the heat-sealing layer can be prevented from being damaged. Furthermore, when manufacturing a liquid container body or lid, even if a thermoplastic plastic film is used for the barrier layer, the base layer is cut at the cut portion of the base layer when the base layer is laminated with the barrier layer and the heat-sealing layer. Since the plastic does not enter, it is possible to manufacture a liquid container or lid having good straw piercing properties.

  When the contents of the liquid container of the present invention are ingested using a straw, the straw can be easily stabbed directly into the container body or the lid. Therefore, it is not necessary to perform a work requiring force on the fingertip to open the lid, and even a person with weak finger power such as an elderly child can easily take the contents. In addition, it is possible to avoid accidents such as the contents scattering when the lid is opened, or the contents falling out due to the container falling after the lid is opened.

It is explanatory drawing which shows an example of the lid | cover used for the container for liquids of this invention. It is sectional drawing by the AB line of FIG. It is sectional drawing by the CD line of FIG. It is a figure which shows the other structure of sectional drawing by the AB line | wire of FIG. It is explanatory drawing which shows the other example of the lid | cover used for the container for liquids of this invention. It is sectional drawing by the EF line of FIG. It is explanatory drawing which shows the other example of the lid | cover used for the container for liquids of this invention. It is explanatory drawing which shows an example of the container for liquids of this invention. It is explanatory drawing which shows the other example of the container for liquids of this invention. It is explanatory drawing which shows the other example of the container for liquids of this invention. It is explanatory drawing which shows the other example of the container for liquids of this invention. It is explanatory drawing which shows the other example of the container for liquids of this invention.

The liquid container of the present invention includes at least a base material layer and a barrier layer. 2 to 4 and 6 are cross-sectional views including the cut portion of the liquid container of the present invention.
The base material layer 6 is required to have a rigidity enough to hold the liquid inside and withstand transportation. Furthermore, flexibility is required to allow the contents to be folded and discarded after consumption. In many cases, the opening is sealed with a lid, but since heat-sealable resin is used for bonding the lid, heat resistance is also required.

Examples of the material for the base material layer include a plastic film and paper. Examples of the plastic film include a biaxially stretched polyester film and a polyamide film. It is preferable to use a paper base material from the viewpoint of recyclability. For example, paper having a paper basis weight of 30 g / m ² or more and 200 g / m ² or less can be used.
The base material layer 6 may be composed of one type of material or may be a laminate of a plurality of layers. For example, as shown in FIG. 2 to FIG. 4 and FIG. The base material layer is laminated with a layer including a barrier layer after the cutting step 2 forming step. At this time, if a resin that is not thermoplastic is used for the resin base material layer 6b, the resin is applied after the laminating step as shown in FIG. A deeper cut portion is formed without entering the cut portion 2a. Further, when a thermoplastic resin is used as the resin base layer 6b, the resin is integrated with the adhesive layer 7 and the barrier layer 8 as shown in FIG.

  As the barrier layer, a metal foil, a plastic film, an inorganic material vapor-deposited film, or the like can be used. For example, an aluminum foil, a film having an ethylene vinyl alcohol, a polyvinyl alcohol, or a polyvinylidene chloride layer, these films are oxidized. A vapor-deposited inorganic material such as silicon, or a combination thereof can be used.

  Considering the ease of straw perforation, the film is preferably an unstretched film. For conventional containers with a straw punch hole that exposes the barrier layer and containers that have a strength that allows the straw to be punched through the lid itself, usually a biaxially stretched film due to a decrease in barrier performance and insufficient strength However, in the present invention, since the barrier layer is protected by the base material layer so that the barrier layer is not exposed or very small even if it is exposed, even a delicate unstretched film can be used.

In particular, when the present invention is used for the lid of a liquid container, preferably, the paper basis weight is 30 g / m ² or more and 200 g / m ² or less, an aluminum foil, ethylene vinyl alcohol, or polyvinyl alcohol, Or it combines the film which vapor-deposited the inorganic material on the unstretched film of polyvinylidene chloride.

The liquid container of the present invention can be provided with an adhesive layer and a heat-sealing layer as necessary. Various resins having a low melting point can be used as the adhesive layer and the heat fusion layer, and examples thereof include a polyolefin resin and an ethylene-vinyl acetate copolymer.
In particular, when the present invention is used for the lid of the liquid container, the heat-sealing layer is an essential configuration in order to seal the opening of the liquid container with the lid.

The liquid container of the present invention is provided with a cutting portion in which a part of the base material layer is cut so that the container can be straw-pierced.
It is preferable that the cut portion is substantially the same as the diameter of the straw. By making the straw pierced cutting part a part of the container or lid, the size of the opening can be arbitrarily limited, and the opening can be prevented from expanding and spilling the contents when opening by straw piercing it can.

  The container for liquid according to the present invention is not intentional because the base material layer is cut for a part of the container, so that the barrier layer can be protected by the base material layer while being easily perforated by a straw. It is possible to prevent the container from being damaged before opening by contact with the protrusion.

In order to facilitate straw perforation, the base material layer of the cutting part may be removed. The removal of the base material layer is preferably minimal. For example, the base material layer is not removed except for the portion where the straw tip contacts, and the barrier layer is not exposed from the cut portion on the base material layer side. The state is preferable for preventing breakage of the container.
Moreover, when removing the base material layer of a cut part with a width | variety, it is preferable that the width | variety of the part to remove is narrower than the thickness of a base material layer. Since the exposed area of the barrier layer and the heat-sealing layer is small and the exposed portion can be protected by the base material layer, the barrier layer and the heat-sealing layer can be damaged by touching the protrusions before opening, such as when transporting the container. This is because it can be prevented.

Most preferably, it is the structure which does not remove the base material layer of a cutting part. By only cutting the base material layer at the cut portion and leaving the base material layer as it is, the barrier layer and the heat-sealing layer are not exposed to the outside of the container, thereby preventing the barrier layer and the heat-sealing layer from being damaged. it can.
Further, by not removing the base material layer of the cut portion, even when a thermoplastic plastic film is used for the barrier layer, the base material layer, the barrier layer, and the heat fusion layer Since the plastic does not enter the cut portion of the base material layer during the lamination, a liquid container or lid having good straw perforation properties can be manufactured.

  Moreover, it is preferable to cut | disconnect in the shape which does not cut | disconnect a base material layer in a cutting part. For example, when a circular cut is made, the base material layer and the barrier layer may be separated during the perforation with a straw, and may enter the liquid container. Further, when the liquid container body or lid is manufactured, the base material layer is subjected to a base material cutting process before being laminated with the barrier layer, but if the base material layer is cut into a shape that is separated from the main body, the base material layer is cut off. There is a possibility that the base material layer may fall off, and there is a high possibility that the barrier layer will be greatly exposed to impair the effects of the present invention.

The cutting portion described above can be provided at any location of the liquid container, but is preferably provided on the upper surface of the liquid container, and more preferably provided on the lid of the liquid container. This lid seals the opening of the liquid container.
In some cases, the lid for sealing the opening of the liquid container is further provided with a partial opening, and the partial opening is sealed with the partial lid. This partial lid is also included in the lid because it seals the opening of the liquid container.

Next, the manufacturing method of the container for liquids of this invention is demonstrated.
An example of the liquid container of the present invention is shown in FIG. The liquid container 14 includes a cylindrical main body 12 and a lid 1 that seals an opening 13 (a drinking mouth).
The liquid container main body 12 includes a cylindrical body portion 14a that forms a side surface, a bottom portion 14b that forms a bottom surface, and a top portion 14c that forms an upper surface and includes an opening. The trunk portion 14a is constituted by a trunk member, the bottom portion 14b is constituted by a bottom member, and the top portion 14c is constituted by a top member.
The body member, the bottom member, and the top member include at least a base material layer 6 and a barrier layer 8. An example of the substrate is paper. As the barrier layer, a polyethylene terephthalate film on which an inorganic substance is deposited can be used according to the required performance. Furthermore, the innermost layer of the container has a heat-sealing layer made of a thermoplastic resin such as polyethylene having heat-sealability because the members are assembled by heat-sealing in addition to water resistance. 9 is provided.

The outermost layer of the body member, the bottom member, and the top member is required to have water resistance when condensation is caused by a temperature difference between the contents and the outside air or when the contents are cooled by immersing the liquid container 12 in cold water. In addition, since heat fusion with the innermost heat sealing layer 9 of the liquid container 12 is required at the time of assembling each part, it is preferable to provide a heat sealing resin layer as in the innermost layer of each part. .
In particular, the top member is sealed by attaching the lid 1 described later to the opening 13 by heat fusion. The heat-fusible resin that is the outermost layer of the top member is also required to be easily opened so that the lid can be easily peeled off when necessary.

Processing of each part and each member constituting each part will be described.
The trunk member, the bottom member, and the top member can be manufactured using the same base material. First, a label or the like is printed on the base material layer 6a that is paper. Then, about a trunk | drum member and a bottom member, the film containing the barrier layer 8 is laminated | stacked on the container inner side, and the resin base material layer 6b is laminated | stacked on the container outer side. The film including the barrier layer 8 is provided with an adhesive layer 7 on the paper base 6a side and a heat fusion layer 9 on the container inner side.

  For the top member, an opening 13 is provided after printing, and then a film including the barrier layer 8 is laminated on the inner side of the container, and a resin base material layer 6b is laminated on the outer side of the container. Similar to the body member and the bottom member, the film including the barrier layer 8 includes an adhesive layer 7 on the paper base 6a side and a heat fusion layer 9 on the container inner side. In the case of the top member, since the film is formed between the film including the barrier layer 8 and the resin base material layer, and the opening 13 is formed, the paper base 6a is exposed along the shape of the opening 13. Remove the film part so that it does not.

  Each member is obtained by punching the base material thus laminated into a required shape. The body member is generally rectangular. When formed as a liquid container, the cylindrical side seam is in direct contact with the contents and the outside, so the base material layer 6 exposed from the side seam is covered with a water-resistant and barrier film to protect it. It is preferable to keep it. In particular, protection is required when the base material layer contains paper. It is preferable that the film used for protecting the end surface of the base material has heat-fusibility.

First, the body member is rounded into a cylindrical shape, and opposing end surfaces protected by a film are overlapped and bonded by heat fusion.
The top member provided with the bottom member and the opening 13 is punched into a slightly larger circle than the cylinder formed by the body member described above. Thereafter, the inner surface of the container is convex, and the edge is formed so that the cross section becomes a U-shape.
A top member formed in a U shape is inserted into one opening (top end) of the previously formed cylindrical body member with the convex portion inside. Heat is applied to the top end to bend the inside of the container and wrap the folded edge of the top member. Thereafter, the outside of the top end portion is covered with a mold, and the top end portion curved to the inside of the container is pressed and pressed from the inside to the outside, and the body member and the top member are heat-sealed to form a top portion 14c.
The other opening (ground end) of the trunk member and the bottom member are bonded in the same manner as the top portion 14c, and the liquid container body 12 having the bottom 14b and the trunk 14a is obtained.

The processing of the lid 1 will be described.
As an example, a lid provided with a cross-shaped cutting part for inserting a straw will be described.
Printing is performed on either the paper base material 6a or the resin base material layer 6b (for example, a stretched polyethylene terephthalate film), and the paper base material 6a and the resin base material layer 6b are bonded together to form the base material layer 6.
Next, a part of the base material layer 6 is cut to provide a cross-shaped cutting part 3. Thereafter, a barrier layer 8 such as an aluminum foil or an unstretched film having a high barrier property is bonded to the paper substrate 6a side through an adhesive layer 7 to form a lid substrate. This is cut | disconnected according to the shape of the opening part 13, and the lid | cover 1 is obtained.
A part of the lid 1 thus obtained is heat-sealed near the opening of the liquid container body 12. At this time, the opening 13 is not sealed yet.

The filling process will be described.
The liquid container body 12 having the lid 1 in the vicinity of the opening 13 is sterilized by exposure to a gas having sterilization performance such as hydrogen peroxide gas. After processing so that there is no residual gas, the opening 13 is filled with contents such as a beverage. The contents are subjected to a constant temperature and short time sterilization cooling process in advance. After filling the contents, the lid 1 is heat-sealed so as to cover the opening 13 and completely sealed.
In this way, a liquid container can be obtained which is filled with the contents and has a cutting part capable of punching straws in the lid 1.

Hereinafter, the present invention will be specifically described with reference to the drawings.
FIG. 1 is a view showing an example of a lid used in the liquid container of the present invention. A cutting part 2 is provided in the center of the lid 1. Here, the cutting part 2 includes a small circular cutting part 2a and a linear cutting part 2b extending in four directions around the circular cutting part 2a.
FIG. 2 is a cross-sectional view taken along line AB in FIG. The diameter w of the small circular cut portion 2 a is smaller than the thickness d of the base material layer 6. FIG. 3 is a cross-sectional view taken along line CD in FIG. Since the base material layer 6 is not removed in the linear cut portion 2b, the barrier layer 8 is not exposed when observed from the outside of the liquid container at the top of FIG.

  5 and 7 are diagrams showing another example of the lid used in the liquid container of the present invention. In the center of the lid 1, a cross-shaped cutting portion 3 is provided in FIG. 5, and a circular cutting portion 4 that is partially omitted in FIG. 7. FIG. 6 is a cross-sectional view taken along line EF in FIG. Since the base material layer 6 is not removed in the cutting part 3, the barrier layer 8 is not exposed when observed from the outside of the liquid container above the FIG. The configuration of this cross section is the same in the cutting section 4 shown in FIG.

In the case of the liquid container using the lid shown in FIG. 1, when the straw is drilled, the sharp portion of the straw is pierced into the cutting portion 2 a, and the hole portion is pushed and spread along the cutting portion 2 b starting from here. Therefore, the straw hole does not spread more than necessary.
5 and FIG. 7, the liquid container using the lid shown in FIG. 5 and FIG. 7 has a straw inserted into the center of the cross in FIG. 5 and at one of the cutting portions 4 in FIG. Therefore, the straw hole does not spread more than necessary.
Moreover, according to these examples, since the base material layer is cut in advance, it is possible to easily make a hole with a straw even with a weak force.
Further, since the barrier layer 8 is not exposed from the outside of the liquid container or is still protected by the base material layer, the container (particularly, by unintended external force before opening, such as when the liquid container is transported) It is possible to prevent the vicinity of the cut part) from being damaged.

8 to 11 are views showing examples of the liquid container of the present invention.
FIG. 8 shows a liquid container 14 of the present invention, which is composed of a liquid container body 12 having an opening 13 serving as a drinking mouth, and a lid 1 that seals the opening 13. The lid 1 is provided with a cross-shaped cutting portion 3.
FIG. 9 shows a liquid container 14 according to the present invention, which is composed of a liquid container body 12 having an opening (not shown) serving as a drinking mouth, and a lid 1 for sealing the opening. The liquid container body 12 is provided with a circular cutting portion 4 that is partially omitted.
FIG. 10 shows a liquid container 14 of the present invention, which is composed of a liquid container body 12 having an opening 13 that is widely opened, and a lid 1 that seals the opening. The lid 1 is provided with a cutting part 2.
FIG. 11 shows a liquid container 14 according to the present invention, which is composed of a liquid container body 12 having an opening 13 that is widely opened, and a lid 1 that seals the opening. The lid 1 is further provided with a partial opening 13a, and the partial opening 13a is sealed with the partial lid 1a. The partial lid 1a is provided with a cross-shaped cutting portion 3.

In the liquid container shown in FIGS. 8 to 11, when the contents are taken out with a straw, the sharp portion of the straw is pierced into the cutting portion without peeling off the lid and opening the opening, and the cutting portion is bent along the cutting portion. Therefore, the straw hole does not spread more than necessary.
Moreover, according to these examples, since the base material layer is cut in advance, it is possible to easily make a hole with a straw even with a weak force.
Further, since the barrier layer 8 is not exposed from the outside of the liquid container or is still protected by the base material layer, the container (particularly, by unintended external force before opening, such as when the liquid container is transported) It is possible to prevent the vicinity of the cut part) from being damaged.

  It can be widely applied not only to beverages but also to extraction of liquids and gel-like substances. For example, it can be applied to various fluid foods, liquid detergents, and functions as a straw insertion port. Application as intake is conceivable.

DESCRIPTION OF SYMBOLS 1 ... Lid 1a ... Partial lid 2 ... Cutting part 2a ... Circular cutting part 2b ... Linear cutting part 3 ... Cross-shaped cutting part 4 ... Circular which lacked one part Cutting part 6 ... base material layer 6a ... paper base material layer 6b ... resin base material layer 7 ... adhesive layer 8 ... barrier layer 9 ... heat fusion layer 12 ... liquid container Main body 13 ·· Opening portion 13a · Partial opening portion · · Liquid container 14a · Body portion 14b · Bottom portion 14c · Top

Claims (6)

A liquid container having at least a base material layer and a barrier layer,
The container for liquid according to claim 1, wherein the base material layer includes a cut portion that is partially cut to enable the container to be punched through a straw.   The liquid container according to claim 1, wherein the base material layer is not removed from the cut portion of the base material layer. The liquid container includes an opening and a lid for sealing the opening,
The liquid container according to claim 1, wherein the cutting portion provided in the base material layer is provided on the lid.   The liquid container according to claim 1, wherein the liquid container is filled with a liquid. A lid for sealing the opening of the liquid container,
The lid includes a base material layer, a barrier layer, and a heat sealing layer,
The said base material layer is provided with the cutting part cut | disconnected in part so that the said lid | cover could be straw-pierced, The lid | cover of the container for liquids characterized by the above-mentioned.   A liquid container comprising the lid according to claim 5.

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