JP2020066469A - Tube container - Google Patents

Abstract

[Problem] To provide a tube container in which it is possible to decorate the film and provide functionality, while suppressing an increase in the thickness of the film and suppressing the content remaining in the body. . The present invention includes a cylindrical body with one end closed and capable of accommodating contents, and a spout portion attached to the other end of the body and capable of closing the other end of the body. In the tube container, the body is formed by adhering the ends of the laminated film, and the bonded part formed by adhering the innermost layers of the ends of the laminated film facing each other is formed along the longitudinal direction. It is provided so that it can be stretched. [Selection diagram] Figure 1

Description

  The present invention relates to a tube container.

  BACKGROUND ART A tube container capable of filling and packaging medicines, cosmetics, foods, etc. is known. In general, a tube container has a cylindrical body having one end closed and the other end open, and an outer diameter that is attached to the other end of the opening of the body by welding or the like and has an outer diameter that increases with distance from the opening of the body. And a spout (also referred to as a shoulder) formed in a tapered shape. An opening through which contents can be taken out is provided on the opposite side of the spout from the body, and the user of the tube container can squeeze the contents out of the opening by crushing the body. (See Patent Document 1).

JP, 2016-199280, A

  As a method for forming the body portion of such a tube container, generally, a method by extrusion molding, a film is formed into a tubular shape so that the end portions along the longitudinal direction overlap, and the overlapping end portions are A method of bonding is known.

  In the method of molding the body by extrusion molding, when the surface of the body is decorated by printing, a printing process using a dedicated printing device is required after the extrusion molding process. For this reason, the decoration may impede the productivity improvement or cause the cost increase. Further, since materials that can be used for extrusion molding are limited, there is a problem that it is difficult to provide a layer having functionality such as gas barrier properties and light shielding properties on the body.

  Further, in the method of adhering the overlapped edges, it is necessary to provide a layer using a material having adhesiveness to the innermost layer and the outermost layer of the film, and to protect the edges of the film, It was necessary to use a sufficient amount of adhesive material for each of the inner and outermost layers. For this reason, the film tends to be thick, and as a result of the rigidity of the formed body becoming high, it becomes difficult to squeeze the contents to squeeze out, and a part of the contents remains in the body. was there. Specifically, when it becomes difficult to crush the body, gaps are formed at the folds at the widthwise ends of the body as shown in the cross-sectional view of the body shown in FIG. 6 taken along a plane orthogonal to the longitudinal direction. Occasionally, the contents left in this gap may remain in the body.

  The present invention has been made in view of such a problem, while it is possible to give decoration and functionality to the film, while suppressing an increase in the thickness of the film, the contents in the body An object of the present invention is to provide a tube container capable of suppressing the residue of

  One aspect of the present invention for solving the above-mentioned problems is a tubular body portion having one end closed and capable of containing contents, and the other end of the body portion attached to the other end of the body portion. A tube container including a spout capable of closing the body, the body being formed by adhering the ends of the laminated film, and adhering the innermost layers of the ends of the laminated film so that they face each other. It is a tube container in which the attached part is provided so as to extend along the longitudinal direction.

  ADVANTAGE OF THE INVENTION According to this invention, the tube container which can suppress the increase of the thickness of a film and can suppress the residual of the content in a trunk | drum, although it can decorate a film and can give functionality. Can be provided.

The front view and side view of the tube container which concerns on the 1st Embodiment of this invention. Sectional drawing and the elements on larger scale of the trunk | drum of the tube container which concerns on the 1st Embodiment of this invention. Sectional drawing and the elements on larger scale of the trunk | drum of the tube container which concerns on the 1st Embodiment of this invention. Front view and side view of a tube container according to a second embodiment of the present invention. Front view and side view of a tube container according to a third embodiment of the present invention The front view and side view of the tube container which concerns on the 4th Embodiment of this invention. Sectional drawing of the trunk | drum of the tube container which concerns on the 4th Embodiment of this invention. Sectional drawing of the trunk | drum of the tube container which concerns on the 4th Embodiment of this invention. Front view and side view of a tube container according to a fifth embodiment of the present invention Sectional drawing of the trunk | drum of the tube container which concerns on the 5th Embodiment of this invention. Sectional drawing of the trunk | drum of the tube container which concerns on the 5th Embodiment of this invention. Sectional view of a tube container according to the prior art

<First Embodiment>
The tube container 100 according to the first embodiment of the present invention will be described with reference to the drawings. The tube container 100 includes a body 10 having one end closed and a spout 20 attached to the other end of the body 10. In addition, the tube container 100 further includes, for example, a cap 30 attached to the spout 20.

  FIG. 1 shows a front view and a side view of the tube container 100, and FIG. 2 shows a sectional view of the body portion 10 taken along the line A-A ′ and an enlarged view of a portion B. In FIG. 1, for convenience, the spout 20 is shown without the cap 30 attached.

(Body)
The body portion 10 is a tubular member having a closed bottom portion 11 located at one end and capable of accommodating contents (not shown). After forming the rectangular laminated film 14 having the adhesive layer 14a containing a material having an adhesive property in the innermost layer into a tubular shape, the body portion 10 has a bottom portion 11 and an end edge along the longitudinal direction of the body portion 10. It can be formed by adhering the adhesive layers 14a of the laminated film 14 facing each other. As shown in FIGS. 1 and 2, the laminating portion 13 formed by adhering the adhesive layers 14 a at the edges along the longitudinal direction of the body portion 10 so as to face each other is a tubular portion of the body portion 10. It has a strip shape extending along the longitudinal direction on the surface.

  As shown in FIGS. 1 and 2, in the tube container 100, the bonding portion 13 is formed so as to extend outward from the surface of the tubular portion of the body portion 10. It may be fixed by being attached to the surface of. Specifically, as shown in the cross-sectional view of FIG. 3, the bonding portion 13 is bent along the surface of the body portion 10 at a position where it is in contact with the tubular portion of the body portion 10 and is bonded to the surface of the body portion 10. can do. Accordingly, when the tube container 100 is gripped and used, it is possible to prevent the bonding portion 13 extending from the surface of the body portion 10 from contacting a hand or the like and hindering the use.

  The method for adhering the bonding section 13 to the surface of the body section 10 is not particularly limited. For example, a part of the surfaces of the bonding section 13 and the body section 10 may be adhered with polyethylene, heat seal polyethylene terephthalate, or the like. It is possible to stack the materials having the materials and heat seal and weld them, or to stack and bond hot melt or heat sealing varnish on a part of the surface of at least one of the bonding portion 13 and the body portion 10.

  The laminated film 14 is not limited in layer constitution as long as the innermost layer is provided with the adhesive layer 14a, but as an example, from the adhesive layer 14a side, a polyethylene layer (50 μm) / aluminum foil layer (15 μm) / ink layer / polyethylene terephthalate layer. It can be formed by stacking (12 μm). As described above, by providing the polyethylene terephthalate layer as the outermost layer, it is possible to make the outermost layer less likely to be scratched and to give gloss as compared with the case where the polyethylene layer is provided as the outermost layer of the body 10. It is preferable because it can A paper layer may be provided as the outermost layer of the laminated film 14. As a result, the feel of the body 10 can be improved and the amount of resin can be reduced. In addition to this, a layer having functionality may be appropriately added according to the function required for the tube container 100.

  The material and the bonding method of the adhesive layer 14a of the laminated film 14 are not particularly limited, but a bonding method by heat sealing using polyethylene or polypropylene is preferable because it is simple.

(Spout section)
The spout 20 is a member that is attached to the top 12 located at the other end of the body 10 and can close the top 12 of the body 10. The spout 20 is attached to the top 12 of the body 10 as an example, and includes a tapered portion 21 having an outer diameter that decreases with increasing distance from the body 10, and a cylindrical portion 22 that is connected to the tapered portion 21. An outer screw 22a is formed on the outer peripheral surface of the cylindrical portion 22, and the opening of the cylindrical portion 22 can be closed by screwing the cap 30 on. The material of the spout 20 is not particularly limited, but a resin material such as low density polyethylene can be preferably used.

  As shown in FIG. 1, the top portion 12 of the body portion 10 is bonded to the end edge of the tapered portion 21. The method of bonding the body 10 and the spout 20 is not particularly limited, but heat sealing can be used, for example.

(cap)
The cap 30 is a member attached to the spout 20 and capable of closing and opening the opening of the cylindrical portion 22. The cap 30 includes, for example, a cylindrical side wall 31 and a top plate 32 that covers one end of the side wall 31. An inner screw 31 a that can be engaged with the outer screw 22 a of the cylindrical portion 22 is formed on the inner peripheral surface of the side wall 31. The material of the cap 30 is not particularly limited, but a resin material such as polypropylene, polyethylene, or low density polyethylene can be used.

  The forms of the spout 20 and the cap 30 are not limited to the present embodiment, and for example, the cap 30 can be attached to the spout 20 and a fixed part can be swingably attached to the fixed part via a hinge. A hinge cap including a cap portion may be used.

  As described above, in the tube container 100, by providing the bonding section 13 in which the adhesive layers 14a that are the innermost layers at the ends of the laminated film 14 are opposed to each other without providing the adhesive layer as the outermost layer, the body section 10 is provided. Is formed into a tubular shape. Therefore, it is possible to prevent the thickness of the laminated film 14 from increasing. Therefore, the rigidity of the body portion 10 formed by using the laminated film 14 is suppressed, and the body portion 10 is easily squeezed to squeeze out the contents, and as a result, the contents remain in the body portion 10. Can be suppressed.

  Further, since the laminated film 14 does not need to be provided with a layer having adhesiveness as the outermost layer, the restriction on the layer structure is small, and the material can be selected with a high degree of freedom in accordance with the desired decorativeness and functionality. it can.

  Further, since the rigidity of the body 10 is suppressed from increasing, the contents flow back into the body 10 that returns to its original shape when the load for crushing the body 10 is released. Is less likely to occur. Therefore, it is not necessary to collect the contents around the spout 20 to facilitate squeezing out the contents by, for example, storing the tube container 100 upside down, and the contents can be easily squeezed out regardless of the position of the contents. Becomes

  Further, in the tube container 100, since the body portion 10 is formed into a tubular shape by providing the laminating portion 13, a packaging bag manufacturing device such as a pillow packaging bag or a stick packaging bag is used without using a molding device dedicated to a laminated tube. Can be used for manufacturing.

<Second Embodiment>
FIG. 4 shows a partial front view and a side view of the tube container 200 according to the second embodiment. The tube container 200 is the tube container 100 provided with the tab 15.

  As shown in FIG. 4, the bonding section 13 of the tube container 200 includes tabs 15 extending from respective ends of the bonded laminated films 14. The tabs 15 are not bonded to each other, and one set of tabs 15 is provided as an example.

  The tab 15 can be peeled off by gripping the tab 15 and applying a force to the bonding section 13 in the direction of expanding the adhesive portion (the direction indicated by the black arrow in FIG. 4). For this reason, when the remaining amount of the contents becomes small due to the use of the tube container 200 and it becomes difficult to squeeze out the contents, the sticking portion 13 is peeled off using the tab 15 to open the body portion 10. be able to. As a result, the contents attached to the inner surface of the body 10 can be taken out, so that the remaining contents in the body 10 can be further suppressed.

  The laminating part 13 including the tab 15 may be bonded to the body part 10 together with the tab 15 as described above.

<Third Embodiment>
FIG. 5 shows a partial front view and a side view of the tube container 300 according to the third embodiment. The tube container 300 is the tube container 100 in which the notch 16 is formed.

  As shown in FIG. 5, the bonding part 13 of the tube container 300 includes notches 16 at the respective ends of the laminated films 14 that are bonded together. The pasting part 13 is provided with two notches 16 with a predetermined space therebetween as an example. Although the notch 16 is formed in a notch shape as shown in FIG. 5, it may be a notch. The number of notches 16 is not limited as long as the laminated film 14 described below can be broken.

  By gripping the laminating portion 13 and applying a force in the circumferential direction of the body portion 10, the laminated film 14 forming the body portion 10 can be broken from the notch 16 as a starting point. As a result, when the remaining amount of the contents becomes small due to the use of the tube container 300 and it becomes difficult to squeeze out the contents, the notch 16 is used to tear the body portion 10 to attach the inner surface of the body portion 10 to the inner surface of the body portion 10. It becomes possible to take out the contents. Therefore, it is possible to further suppress the content from remaining in the body 10.

  The laminating section 13 including the notch 16 may also be bonded to the body section 10 as described above.

<Fourth Embodiment>
A tube container 400 according to the fourth embodiment of the present invention will be described with reference to the drawings, focusing on differences from the tube container 100. The tube container 400 includes the body portion 10 whose one end is closed, and the spout 20a attached to the other end of the body portion 10. The tube container 400 may further include a cap 30 attached to the spout 20a, like the tube container 100. FIG. 6 shows a front view and a side view of the tube container 400, and FIG. 7 shows a side view of the spout 20a.

  The difference between the tube container 100 and the tube container 400 is the shape of the spout 20a, as shown in FIGS. Specifically, the spout 20a includes a flat plate-shaped closing portion 21a that is orthogonal to the longitudinal direction of the body 10 in place of the tapered portion 21 of the spout 20. Then, the other end of the body portion 10 is bonded to the surface of the closed portion 21a opposite to the one end side of the body portion 10 at the edge of the closed portion 21a.

  FIG. 8 shows a cross-sectional view for explaining the state of the tube container 400 when the contents slightly left in the body portion 10 are taken out. In the tube container 400, the spout 20a is provided with a flat plate-shaped closing portion 21a orthogonal to the longitudinal direction of the body portion 10, and the top portion 12 of the body portion 10 has a body portion of the closing portion 21a at an end edge of the closing portion 21a. It is adhered to the surface of the portion 10 opposite to the bottom portion 11 side. Therefore, as shown in FIG. 6, by bending the body portion 10a with the edge of the closing portion 21a with a finger or the like, the contents slightly remaining in the body portion 10 become flat on the inner side of the closing portion 21a. It is sandwiched between the inner surface of the body portion 10 and pushed out toward the periphery of the opening of the spout 20a.

  Further, since the closed portion 21a of the spout 20a is flat, unlike the tapered spout, there is no space on the inner side that allows the contents to remain. Therefore, the contents pushed out toward the periphery of the opening of the spout 20a can be squeezed out of the opening without remaining inside the body 10 and the spout 20a. As a result, it is possible to prevent the contents from remaining inside the container.

  Therefore, according to the tube container 400 in which the spout 20a is attached to the body portion 10 in which the residual content is suppressed by providing the laminating section 13, the residual content can be further suppressed.

  The body 10 of the tube container 400 may also include the tab 15 or the notch 16.

<Fifth Embodiment>
A tube container 500 according to the fifth embodiment of the present invention will be described with reference to the drawings, focusing on differences from the tube container 100. The tube container 500 includes a body portion 10b having one end closed and a spout 20 attached to the other end of the body portion 10b. The tube container 500 may further include a cap 30 attached to the spout 20 as in the tube container 100. FIG. 9 shows a front view and a side view of the tube container 500, and FIG. 10 shows a cross-sectional view of the body portion 10a taken along the line BB ′.

  The difference between the tube container 100 and the tube container 500 is that the body portion 10a includes two bonding portions 13 as shown in FIGS. 9 and 10. Specifically, the body portion 10 a is formed by adhering the innermost layers of the end portions of the two laminated films 14 so as to face each other, and two bonding portions 13 are provided.

  The two laminated films 14 forming the body portion 10a may have the same layer structure or different layer structures as long as the innermost layer has the adhesive layer 14a. The tube container 500 can have various functions because the two laminated films 14 forming the body portion 10a have different layer configurations. Hereinafter, specific examples of the layer structure of the laminated film 14 and functions obtained by using the layer film 14 having the layer structure will be described. The layer configurations described below are examples, and the layer configurations of the two laminated films 14 are not limited as long as the effects of each specific example can be obtained, and layers may be appropriately added.

(Specific example 1)
In the tube container 500 according to the specific example 1, one of the two laminated films 14 forming the body portion 10a has low rigidity such that the contents can be easily squeezed out by crushing a part of the body portion 10a. On the other hand, the other has rigidity enough to maintain the shape of the body portion 10a even when the remaining amount of the content is low. As a result, the tube container 500 can easily squeeze out the contents, and the shape of the body portion 10a is maintained even when the remaining amount of the contents is small.

The layer structure of the two laminated films 14 used in the tube container 500 according to the specific example 1 is, for example, one of the polyethylene terephthalate (PET) (12 μm) / nylon (NY) (15 μm) in order from the outside of the body 10 a. / Polyethylene (PE) (100 μm), and the other may be PET (24 μm) / NY (25 μm) / PE (100 μm). In addition to this, one is PET (12 μm) / NY (15 μm) / PE (100 μm) in this order from the outside of the body portion 10 a, and the other is PE (20 μm) / paper (200 g / m ² ) / It can be PE (100 μm).

(Specific example 2)
In the tube container 500 according to the specific example 2, the other of the two laminated films 14 forming the body portion 10a has minute irregularities on the surface. As a result, the tube container 500 can change the touch (on one side and the other side of the laminated film 14) on a part of the surface of the body portion 10a, so that the tube container 500 has a taste and can be distinguished from other containers by the sense of touch. Thus, the appearance of the surface of a part of the surface of the body portion 10a changes, which is a high designability.

  The layered structure of the two laminated films 14 used in the tube container 500 according to the specific example 2 is, for example, one of PET (12 μm) / NY (15 μm) / PE (100 μm) in order from the outside of the body 10 a. The other may be PET (12 μm) / NY (15 μm) / PE (100 μm) with the emboss formed on the outside. In addition to this, one is PET (12 μm) / NY (15 μm) / PE (100 μm) in order from the outside of the body portion 10a, and the other is textile (fabric / fabric) or non-woven fabric / gas barrier layer / PE. (100 μm). The gas barrier layer may be omitted.

(Specific example 3)
In the tube container 500 according to the specific example 3, one of the two laminated films 14 forming the body portion 10a is printed and the other is vapor-deposited with aluminum. As a result, the tube container 500 has a high design property in which printing is highlighted by the metallic luster.

  The layer structure of the two laminated films 14 used in the tube container 500 according to the specific example 3 is, for example, one of PET (12 μm) / NY (15 μm) / PE (100 μm) in order from the outside of the body portion 10 a. The other is PET (VM-PET) (12 μm) / NY (15 μm) / PE (100 μm) on which aluminum is vapor-deposited, and one laminated film 14 can be printed.

(Specific example 4)
In the tube container 500 according to the specific example 4, the other of the two laminated films 14 forming the body portion 10a has air permeability. As a result, the tube container 500 can suppress the internal atmospheric pressure from rising above a predetermined level. In addition, the tube container 500 can be gas-sterilized from the outside of the tube container 500 after filling the contents.

  The layered structure of the two laminated films 14 used in the tube container 500 according to Specific Example 4 is, for example, one of PET (12 μm) / NY (15 μm) / PE (100 μm) in order from the outside of the body 10 a. The other can be a sheet material (160 μm) having air permeability. As the breathable sheet material, for example, Tyvek (registered trademark) can be used.

  In the tube container 500, the two bonding portions 13 are provided, for example, at positions facing each other in the circumferential direction of the body portion 10a. By providing the two bonding portions 13 at positions facing each other in the circumferential direction of the body portion 10a, the appearance of the tube container 500 looks larger than that in the case where the bonding portion 13 is single, so that the designability is improved. Can be made.

  As shown in FIG. 11, the two bonding portions 13 may be provided at positions that do not face each other in the circumferential direction of the body portion 10a. Moreover, the number of the bonding parts 13 with which the body part 10a is provided is not limited to two, and may be three or more. Also in this case, the body portion 10a is formed by adhering the innermost layers of the end portions of the three or more laminated films 14 so as to face each other. The laminated films 14 may have the same layer structure or different layer structures. Further, the bonding section 13 may be fixed by being bonded to the surface of the body section 10a.

  In the above description, the tube container 500 in which the spout 20 is attached to the other end of the body 10a has been described, but the tube container 500 is the spout used in the second embodiment instead of the spout 20. The part 20a may be provided. Further, the body portion 10 a may include the tab 15 or the notch 16.

  The tube containers according to the examples and the comparative examples were produced, and the amount of residual contents was compared and evaluated.

  As the tube container according to the example, the tube container 100 according to the first embodiment was manufactured. The layer structure of the laminated film used was a polyethylene layer (50 μm) / polyethylene terephthalate layer (12 μm) from the innermost layer side.

  As the tube container according to the comparative example, a tube container in which only the layer structure of the laminated film was changed from that of the example was produced. The layer structure of the laminated film was polyethylene layer (100 μm) / EVOH layer (20 μm) / polyethylene layer (100 μm) from the innermost layer side.

  After filling each of the prepared tube containers with kneading paste, the contents were squeezed out under the same load, and the amount of the contents remaining in the body was measured.

  As a result, in the tube container according to the comparative example, a gap was created in the folds of the laminated film located at both ends of the body in the width direction, and the gap remained in the contents. On the other hand, in the tube container according to the example, there was almost no gap at both ends of the body in the width direction, so that the content remained little. Further, in the tube container according to the example, by inserting a part of the body part into the tapered part of the spout, it was possible to squeeze out the contents remaining inside the tapered part, but the tube according to the comparative example In the container, since the rigidity of the body was high, it was not possible to squeeze out the contents remaining inside the tapered portion.

  As a result, the residual amount of the tube container according to the example became half of the residual amount of the tube container according to the comparative example, and it was confirmed that the tube container according to the example could suppress the residual contents in the body.

  INDUSTRIAL APPLICATION This invention can be used for the packaging container which can be filled with pharmaceuticals, cosmetics, foodstuffs, etc.

10, 10a Body part 11 Bottom part 12 Top part 13 Laminating part 14 Laminated film 14a Adhesive layer 15 Tab 16 Notch 20, 20a Spouting part 21 Tapered part 21a Closing part 22 Cylindrical part 30 Cap 31 Sidewall 32 Top plate 33 Hinge part 100, 200, 300, 400, 500 tube containers

Claims (6)

A tube container having a tubular body portion having one end closed and capable of containing contents, and a spout which is attached to the other end of the body portion and can close the other end of the body portion. hand,
The body portion is formed by adhering the end portions of the laminated film, and the laminating portion formed by adhering the innermost layers of the end portions of the laminated film so as to face each other is stretched along the longitudinal direction. Is provided,
Tube container. The laminated film is
A layer containing polyethylene terephthalate is laminated on the outermost layer,
The tube container according to claim 1. The laminating section,
A tab extending from each end of the laminated film laminated together,
The tube container according to claim 1. The laminating section,
A notch is formed at the end of the laminated film that has been laminated,
The tube container according to claim 1. The spout portion comprises a flat plate-shaped closing portion orthogonal to the longitudinal direction of the body portion,
The other end of the body portion is bonded to a surface of the closing portion opposite to the one end side of the body portion at an end edge of the closing portion,
The tube container according to any one of claims 1 to 4. The body portion is formed by adhering the innermost layers of the end portions of the two or more laminated films so as to face each other,
A plurality of the laminating sections are provided,
The tube container according to any one of claims 1 to 5.