JP2020121749A - Tube container - Google Patents

Abstract

To provide a tube container that is imparted with stacking performance so as to suppress packing level in storage and conveyance.SOLUTION: A tube container (1) comprises a flexible trunk part (2) and allows contents to be extracted therefrom by pressing the trunk part, which is constituted of a mouth plug (3) having a cylindrical pour-out port (32) and a flange (31) that expands outward from a peripheral edge of a lower end of the pour-out port, and the flexible trunk part that is fused to a peripheral edge of the flange, where the trunk part has a frustum side geometry.SELECTED DRAWING: Figure 1

Description

The present invention stores a liquid such as toothpaste, powder, and granules as contents, has a flexible container body, and can press to pour the contents out into solid or granules. The present invention relates to a tube container that can swing out the body.

A tube container that contains high-viscosity liquid such as toothpaste, butter, mayonnaise, ketchup, adhesive, etc. as a content has a flexible container body, and presses it to dispense an appropriate amount of content frequently. Easy container.
This tube container is mainly manufactured by fusing a cylindrical body with a fixed cross section with a radius and a neck formed by injection molding or compression molding, and is used in many food and non-food fields. ..
By cutting a deformed extruded tube and fusing the neck, or by rolling a laminated sheet and sealing the ends on the back to form a tubular body and welding the neck to it, a thin soft blow molding It consists of tube containers and is used in many food and non-food fields.

By the way, as a method of molding the body of this tube container, mainly a cylindrical shaped extruded tube with a fixed radius in a cross section is cut, or a laminated sheet is rolled and both ends are back-sealed to form a tubular body. Have been manufactured.
However, such a tube container composed of a tubular body has no stacking property, and even in the case of storing and carrying the container, it was necessary to put it in a box that was divided into individual containers and send it. There was a huge problem.

For example, in Patent Document 1,
A pouring unit for pouring out the contents, and a welding unit that is welded to the pouring unit and is configured to include a body for accommodating the contents,
The pouring unit includes a spout portion from which the contents are spouted, and a shoulder portion that projects outward in the radial direction from the spout portion,
The body part, one surface side of one side edge of the film is superimposed on the other surface side of the other side edge, and the one side edge and the other side edge that are overlapped are welded,
One end in the axial direction of the body portion is welded to the outer peripheral surface of the shoulder portion,
The other axial end of the body is closed by welding the inner surfaces to each other,
The pouring unit, at least the surface in contact with the content is molded of a resin containing a non-adsorptive resin,
The film forming the body includes at least three layers: an inner layer made of a resin containing a non-adsorptive resin, an intermediate layer that is a gas barrier layer containing a gas barrier substance, and an outer layer made of a resin containing a non-adsorptive resin. We propose a tube container characterized by this.

The film used for such a body is cut into a rectangular shape, and one side edge of the film is manufactured so that one side of the side edge is superposed on the other side of the other side edge. After that, it must be prevented from collapsing so that the pouring unit cannot be welded.
Furthermore, when filling the contents, it is also necessary to prevent the bottom seal portion on the opposite side of the pouring unit from being crushed, and it is necessary to take a large volume not only during manufacturing but also during storage. However, there is a problem that it takes a lot of time and money to handle it.

JP, 2016-199280, A

Therefore, it is an object of the present invention to provide a tube container that is provided with stacking properties and that suppresses the bulk of packaging during storage and transportation.

The tube container of the present invention,
In a tube container that has a flexible body and allows the contents to be poured out by pressing the body,
A spout having a tubular spout and a flange extending outward from the peripheral edge of the spout lower end,
And a flexible body fused to the flange periphery,
A body part is a tube container characterized by having a frustum side surface shape.

In the tube container of the present invention, since the stacking property is obtained by forming the body part in the shape of the frustum side surface, the container can be stacked and stored.
In addition, stacking ensures that the body end on the opposite side of the spout is opened, and it is easy to fill the contents.

In the tube container with the bottom seal of the present invention, a partially cutaway front view of the state in which the cap is removed, a vertical sectional view seen from the side, and a partial sectional view when a screw cap is used. is there. It is the 1st embodiment example of the body part used for the tube container of the present invention, and the blank, the body part perspective view, and the partial expanded sectional view showing the embodiment example of the side seal part of the body part. It is a perspective view showing a second embodiment example and a third embodiment example of the body part used for the tube container of the present invention. FIG. 3 is a vertical cross-sectional view showing a state in which the caps of the tube container of the present invention are stacked without being fitted. FIG. 3 is a vertical cross-sectional view showing a state in which the cap is fitted and stacked in the tube container of the present invention. It is a longitudinal cross-sectional view which shows the process of opening a closing plate with the tube container of this invention. It is a longitudinal section showing the state where the tube container of the present invention was opened and the contents were poured out to the end.

Hereinafter, embodiments of the tube container of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a bottom-sealed tube container 1 showing an example of the present invention. FIG. 1-1 is a partially cutaway front view of the state in which a stopper cap is removed, and FIG. FIGS. 1 to 3 show partial cross-sectional views when the screw cap is used.
The tube container 1 of the present invention includes a thin and highly flexible body portion 2, a stopper 3 that is fused to one end of the body portion 2 and has rigidity, and screwed or plugged into the stopper 3. Made of a cap that fits with.

The body portion 2 has a top plug 3 fused at the upper end, and the body portion 2 crushed at the lower end to form a bottom seal portion 22 in which the inner body sealant layers are fused together.
The length of the lower edge of the bottom seal portion 22 is longer and has a larger diameter than the length of the upper edge of the upper end that fuses with the spout 3.

The spout 3 has a cylindrical spout 32 and a flange 31 that spreads outwardly from the peripheral edge of the spout lower end.
Then, the upper end of the body portion 2 is fused to the peripheral edge of the upper surface of the flange 31 of the spout 3 in a state of being horizontally bent.
Further, inside the spout 32, there is a closing plate 33 whose peripheral edge is a weak line 331.
A pull ring 332 is connected to one end of the peripheral edge of the closing plate 33 via a column.
Although this weak line is formed from the cavity side, it may be formed from the core side.

FIG. 1-3 is a longitudinal sectional view in the vicinity of the upper end of the tube container, which is an embodiment example having a screw portion 321 on the outside of the spout 32 of the spout 3.
As shown in this figure, a cap 41 having a female screw may be screwed into the spout 32.

2 is a first embodiment of the body 2 used for the tube container of the present invention, FIG. 2-1 is a blank of the body 2, FIG. 2-2 is a perspective view of the body, FIG. 2-4 and 2-5 are partially enlarged cross-sectional views showing an embodiment example of the side seal portion 231 of the body portion 2.

The blank 23 of the body 2 is made of a fan-shaped laminated sheet 230 surrounded by two radii of circles and arcs between them. In the embodiment example of FIG. 2A, a side seal portion 231 that overlaps the radius of the other end is provided at the radius of the one end of the fan shape.
FIG. 2-2 shows a state in which the fan-shaped blank 23 is wound around a truncated cone mandrel and the side seal portion 231 is overlapped with the radius of the other end to have a truncated cone side surface shape. In this way, the body portion 2 in which the fan-shaped blank 23 is rolled has a longer peripheral edge length at the lower end than the peripheral edge length at the upper end, and thus has a shape in which the lower side spreads outward.

The partially enlarged cross-sectional view shown in FIG. 2-3 is an embodiment example in which the side seal portion 231 is formed by parallel splicing, and in order to prevent the end face of the laminated sheet 230 of the blank from being exposed inside the container, an edge protection tape This is an example in which the end face is covered with 24.

The partially enlarged cross-sectional view shown in FIGS. 2-4 is an embodiment example in which the side seal portion 231 is formed by abutting. Although there is an advantage that it does not become so thick, the end faces of the blank laminated sheet 230 are not fused with sufficient strength, so the edge protect tape 24 is fused and fixed inside the vicinity of the abutting portion.

The partially enlarged cross-sectional view shown in FIG. 2-5 is an example of an embodiment in which the side seal portion 231 is formed by folding back joint. In the vicinity of the opposite side of the laminated sheet 230 that is inside the side seal portion 231, the sheet is folded back and fused to the other end in a state where the end face is edge protected.
Although the edge protect tape 232 is not used, the side seal portion 231 is often overlapped and is likely to be thick, but the side seal portion 231 is fused so as not to be too thick by sufficient heating at the time of sealing and sufficient pressure. ..

FIG. 3 is an embodiment example of the body 2 used in the tube container 1 of the present invention. FIG. 3-1 shows a perspective view of the second embodiment example, and FIG. 3-2 shows a perspective view of the third embodiment example.
In FIG. 3A, two blanks 23, which are fan-shaped and are provided with adjacent side seal portions 231 on their two radius portions, are used. This is an example of an embodiment in which the same two blanks 23 are overlapped on the sealant surface side and the sealant surfaces are fused to each other on both the left and right side seal portions 231.
Since the end faces of the laminated sheet face outward, the edges can be prevented from contacting the contents. Further, since the body portion 2 can be sealed without rolling, it can be manufactured at high speed.
Further, since the body portion 2 can be overlapped with the body portion 2 folded, the volume of container transportation and storage when not filled can be reduced.

FIG. 3-2 shows a fan-shaped blank 23 having adjacent side sealing portions 231 on two radius portions thereof. This is an example of an embodiment in which the blank 23 is rolled with the sealant surface inside and the sealant surfaces of the left and right side seal portions 231 are overlapped and the side seal portions are fused.
Also in this embodiment, since the end surface of the laminated sheet faces outward, the edge can be prevented from coming into contact with the contents.
FIG. 4 is a vertical cross-sectional view showing a state in which the tube container 1 of the present invention is stacked without the cap fitted on the spout 3.
If the spout does not intersect with the slanted side surface 20 of the outer shape of the body 2 and the slanted extension surface 20 and the spout 3 is inside the slanted extension surface 20, Stable stacking is possible because the plug does not hinder the stacking property.
In the partially enlarged view, the body inner surface position that overlaps the body portion 2 that is cut by the vertical line 61 overlaps the body portion inner surface position that overlaps the body portion 2 that is cut by the horizontal line 62 that is outside the body portion 2 thickness or more. If it is, it is understood that stacking is possible.
Therefore, the stacking property can be obtained even if the taper angle of the body is small.

FIG. 5 is a vertical cross-sectional view showing a state in which the tube containers 1 of the present invention, in which the hinge caps 4 are capped and fitted to the spouts 3, are stacked.
If the cap 4 is housed inside the inclined extension surface 20 of the body 2, the cap does not become a factor that hinders the stacking property, and stable stacking is possible.
The hinge has a straight shape that stretches out to the left and right, and is stretched out.

FIG. 6 is a vertical cross-sectional view showing a step of opening the closing plate 33 in the tube container 1 of the present invention.
The spout 3 to be used is inside the lower end peripheral edge of the spout 32 and is closed by a closing plate 33 surrounded by a weak line 331 on the peripheral edge.
The closing plate 33 is formed into a pull top having a pull ring 332 via a column 333 provided inside the peripheral edge of the line of weakness.
The line of weakness 331 on the peripheral edge of the closing plate 33 is formed by a mold, and is formed by making the wall thickness extremely thinner than the peripheral edge. In this drawing, the weak line 331 is formed by the piece on the core side.

FIG. 6A is a diagram illustrating a process of inserting a fingertip into the pull ring 332 and hooking the pull ring 332 to pull the weak line 331 at the base of the support column 333.
Since the column 333 is provided at the end of the closing plate 33, the force of tearing can be concentrated on the weakened line 331 near the column 333.
First, when the pillar 333 connected to the pull ring 332 is pulled on the periphery of the closing plate 33, a force of tearing is applied to the weak line 331 near the pillar 333 connected thereto.

In FIG. 6B, the pulling force of the pull ring 332 is locally applied to the weak line 331 near the support column 333 and is torn. Then, since the torn line of weakness 331 is connected to the peripheral edge of the closing plate 33, it is continuously torn as it is, spreads to the peripheral edge of the closing plate 33, and the closing plate 33 can be removed and opened.

FIG. 7 is a longitudinal sectional view showing a state where the tube container 1 of the present invention is opened and the contents 5 are poured out to the end.
When the contents are poured out to the end, in the body portion 2 which is thin and highly flexible, the front and back inner surfaces are in close contact with each other. At this time, the body portion 2 near the spout 3 comes close to the inner surface of the flange 31.
In the container of the present invention, since the inner surface of the spout 3 is formed by the flange 31 having a flat flat surface, the inner surface of the body portion 2 can be completely adhered to the inner surface of the spout 3.
For this reason, the remaining amount of the content 5 remaining inside the tube container 1 is only inside the spout 32, so that the remaining amount can be made extremely small.
The body portion 2 may be in a state perpendicular to the inner surface of the flange 31 in order to push out the contents more strongly, but the body portion 2 is securely pressed by being bent so as to be parallel to the inner surface of the flange 31. It is possible to push the contents to the end.

The body used in the container of the present invention is a thin and soft body having a thickness of 500 μm or less, preferably 400 μm to 200 μm, and a sealant layer is used as the innermost layer.
As an example of the embodiment, the body portion may be a single extruded tube of low density polyethylene, linear low density polyethylene, medium density polyethylene, or the like, but from the inside, low density polyethylene (thickness 30 μm)/adhesive A very thin structure such as a total thickness of 115 μm of /biaxially stretched polyethylene terephthalate (thickness 25 μm)/adhesive/low density polyethylene (thickness 60 μm) may be used.
Also, from the inside, the structure of low density polyethylene/adhesive/saponified ethylene/vinyl acetate copolymer/adhesive/low density polyethylene,
Low density polyethylene/adhesive/biaxially stretched polyamide film/adhesive/low density polyethylene,
Low density polyethylene/adhesive/biaxially stretched polyamide film/adhesive/low density polyethylene/aluminum foil/low density polyethylene,
A non-fusing resin film may be used as the outermost layer, such as low density polyethylene/aluminum foil/low density polyethylene/biaxially stretched polyamide film/adhesive/biaxially stretched polyethylene terephthalate. In this case, if the thickness of the biaxially stretched polyethylene terephthalate, the biaxially stretched polyamide film or the like is made as thin as possible, a tube container that can be easily extruded can be obtained.
Furthermore, a laminated film in which low-density polyethylene is attached to the front and back of a single aluminum foil can have a high bendability and can be easily processed.
The body has the above-mentioned structure, and these films are laminated by a dry lamination machine or an extruder lamination machine to form a laminated film for the body.
With such a laminated film, a body having a high barrier property can be obtained even if it is thin, and it is formed into a rectangular sheet shape, rounded into a tubular shape, and the left and right ends are laminated on the front and back sides to form a laminated tube body. ..

The spout is made of a resin that is easy to fuse with the sealant layer used for the body and also has rigidity and flexibility that fits into the cap body of the hinge cap. Use and mold.
As the resin used for injection molding of the spout, low density polyethylene, linear low density polyethylene, medium density polyethylene, ethylene/vinyl acetate copolymer and the like can be used.

The edge protect tape for preventing delamination and the like of the body material of the side seal portion is a film made of a resin having a high fusibility on the fusing surface, and a sheet which does not deteriorate even if its cross section is exposed is used. A single layer such as a linear low-density polyethylene single film may be used.

The container of the present invention is as described above, and in the case of the body formed of a highly flexible film, since the inner surface of the spout is flat, it has a space for allowing the contents to remain therein. Instead, it can be squeezed out of the spout without leaving the contents behind.
In particular, the use of the frustum-sided body reduces the loss of the filling work and enables the stacking of the containers before the filling. As a result, it is possible to reduce the bulk of the container at the time of transporting the container, efficiently maintain the container in a state in which it is difficult to deform, and efficiently and reduce the total cost. Is big.

1---Tube container 2---Body portion 20---Inclined extension surface 21---Spout fusion portion 22---・・・Bottom seal part 23 ・・・Blank 230 ・・・・・Layered sheet 231 ・・・・Side seal part 24 ・・・・Edge protection tape 3 ・・・・・・・・Mouth plug 31 ・・・・・Flange 32 ・・・・・・・・・・Spout 321 ・・・・・・Screw part 33 ・・・・・・・・・・Closing plate 331 ・・・..Weak line 332...Pulling ring 333...Post 4...Cap 41... Cap 5 with female screw ..Contents 61..... Vertical lines 62..... Horizontal lines

Claims (3)

In a tube container that has a flexible body and allows the contents to be poured out by pressing the body,
A spout having a tubular spout and a flange extending outward from the peripheral edge of the spout lower end,
And a flexible body fused to the flange periphery,
A tube container in which the body has a frustum side surface shape. The tube container according to claim 1, which is a spigot on which a spout and the like do not intersect on the frustum side surface inclined extension surface of the body portion. The tube container according to claim 1 or 2, wherein the lower end of the spout has a closing plate that can be easily opened.

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