CN110475725B

CN110475725B - Container for shrink packaging

Info

Publication number: CN110475725B
Application number: CN201880021580.9A
Authority: CN
Inventors: 小矶晶子; 阪口孝士; 新渡户耕太
Original assignee: Lion Corp; Yoshino Kogyosho Co Ltd
Current assignee: Lion Corp; Yoshino Kogyosho Co Ltd
Priority date: 2017-03-30
Filing date: 2018-03-15
Publication date: 2021-07-13
Anticipated expiration: 2038-03-15
Also published as: CN110475725A; WO2018180542A1; JP2018167889A; JP6902900B2

Abstract

The invention provides a container for shrink packaging, which can stably fill a shrink film on the outer peripheral surface even if the outer shape is a special shape, and can obtain a product with good outer shape. The shrink packing container has a left-right asymmetrical shape, the body portion has a 1 st wall surface and a 2 nd wall surface facing each other via the central axis in a left-right asymmetrical direction, the bottom portion has a bottom surface intersecting the central axis and a cut surface inclined from a lower end of the 1 st wall surface toward the bottom surface side in parallel with the central axis or in a direction in which a distance from the central axis becomes smaller, the 1 st wall surface is located on the central axis side with respect to a 1 st straight line connecting the 1 st intersection point and the 1 st shoulder intersection point, the 2 nd wall surface is located farther from the central axis toward the outside than a 2 nd straight line connecting the 2 nd shoulder intersection point and the bottom intersection point, and the cut surface is formed in a range including at least a position farthest from the central axis in a periphery of the bottom surface.

Description

Container for shrink packaging

Technical Field

The present invention relates to a container for shrink packaging.

The present application claims priority based on japanese patent application No. 2017-068867, filed in japan on 30/03/2017, the contents of which are incorporated herein by reference.

Background

Conventionally, products in which the outer surface of a container containing contents such as a cleaning agent is covered with a shrink film in which a product name, a product description, and the like are described have been sold in shops. Shrink-wrapped products are not easily contaminated and have a high-grade feel, and thus are widely used. As a shrink packaging method, there are various packaging methods such as a type in which the product is entirely covered with a shrink film, or a type (shrink label) in which a part of a container is partially covered.

For example, in a trigger type dispenser for dispensing the contents of a container by a trigger operation, most of the outer surface of the container is covered with a shrink film except for a dispenser attached to the upper end of the container. In order to facilitate the assembly of the shrink label, the container is often formed in a shape that is symmetrical with respect to the entire container, for example, via a center axis along the vertical direction. In addition, for example, the following simple shapes are generally used: one or both of the side surfaces of the outer peripheral surface of the container facing each other through the center axis are inclined gradually downward along the center axis or toward the bottom.

However, a completely new bottle design has been proposed in recent years (for example, patent documents 1 to 4), and the following problems have arisen: it is difficult to smoothly load the shrink label on the outer peripheral surface of the container.

[ Prior art documents ]

[ patent document ]

[ patent document 1] JP Kokai publication 2004-512947

[ patent document 2] JP-A11-263386

[ patent document 3] JP patent application laid-open No. 2007-137502

[ patent document 4] JP Kokai publication No. 2012-240686

Disclosure of Invention

[ problems to be solved by the invention ]

When a shrink label is heat-shrunk in order to fill the shrink label in a bottle having a special shape (profile) which is newly designed, the shrink label is tilted due to the inclination of the outer peripheral surface, and the appearance of the finished product is poor.

In view of the problems of the prior art described above, it is an object of the present invention to provide a shrink packaging container in which a shrink film can be stably loaded on the outer peripheral surface of the container even when the container has a special outer shape, and a product having a good outer shape can be obtained.

[ means for solving problems ]

A shrink packing container according to an embodiment of the present invention is a bottle-shaped shrink packing container having a head portion, a shoulder portion, a body portion, and a bottom portion along a central axis, at least a part of the container being asymmetric in the left-right direction with respect to the central axis, the body portion having a 1 st wall surface and a 2 nd wall surface facing each other in the asymmetric-left direction with respect to the central axis, the bottom portion of the 1 st wall surface and the 2 nd wall surface having a maximum width of the body portion, the bottom portion having: a bottom surface intersecting the center axis, and a cut surface provided on at least a part of a peripheral edge of the bottom surface and inclined from a lower end of the 1 st wall surface toward the bottom surface side in a direction parallel to the center axis or in a direction in which a distance from the center axis becomes smaller, wherein an intersection of the 1 st wall surface and the cut surface is a 1 st intersection, and when an intersection of the 1 st wall surface and the shoulder portion is a 1 st shoulder-side intersection, the 1 st wall surface is located on the center axis side of a 1 st straight line connecting the 1 st intersection and the 1 st shoulder-side intersection, an intersection of the 2 nd wall surface and the shoulder portion is a 2 nd shoulder-side intersection, and when an intersection of the 2 nd wall surface and the bottom portion is a bottom-side intersection, the 2 nd wall surface is farther from the center axis than a 2 nd straight line connecting the 2 nd shoulder-side intersection and the bottom-side intersection, the cutting surface is formed in the periphery of the bottom surface in a range at least including the position farthest from the central axis.

In the shrink-packing container according to an embodiment of the present invention, the 1 st wall surface may have: the first inclined surface is a concave curved surface that is concave in a direction in which the distance from the central axis decreases as going from the shoulder portion to the bottom portion side, and a 1 st inclined surface that is continuous with the concave curved surface and is inclined in a direction in which the distance from the central axis increases.

In the shrink packing container according to one embodiment of the present invention, the 2 nd wall surface of the body portion may have: a 2 nd inclined surface whose distance from the central axis becomes larger as going from the shoulder portion to the bottom portion side, and a 3 rd inclined surface which is inclined from a lower end of the 2 nd inclined surface in such a manner that its distance from the central axis becomes smaller.

In the shrink packaging container according to an embodiment of the present invention, the lowermost portion of the body portion may have a maximum diameter, and the circumferential length ratio of the lowermost diameter of the body portion to the minimum diameter of the body portion may be in a range of 1.2 times to 5 times.

The position of the minimum diameter of the body portion to be measured in the calculation of the circumferential length ratio is not selected as the position of the minimum diameter in the entire body portion region, but is selected as the position of the minimum diameter in the body portion fitting region surrounded by the shrink film.

In the shrink packing container according to the embodiment of the present invention, the head portion may be inclined forward toward the tangential plane with respect to the center axis.

In the shrink-wrap container according to an embodiment of the present invention, an inclination angle of the cut surface with respect to the central axis may be in a range of 0 ° to 60 °.

In the shrink-wrap container according to an embodiment of the present invention, an inclination angle of the cut surface with respect to the central axis may be in a range of 15 ° to 60 °.

The shrink packing container according to an embodiment of the present invention may have a structure in which the cut surface is provided on the entire periphery of the bottom surface.

In the shrink-wrap container according to the embodiment of the present invention, the height of the cut surface in the direction along the center axis may be 5mm or more.

In the shrink packaging container according to an embodiment of the present invention, when an intersection of the 1 st inclined surface and the cut surface is a 1 st intersection, and an intersection of the 2 nd inclined surface and the 3 rd inclined surface is a 2 nd intersection, the 1 st intersection and the 2 nd intersection may be located outside the bottom surface, and the 2 nd intersection may be located at a position shifted to the 1 st position between the 1 st intersection and a 1 st position on the concave curved surface, which is a minimum diameter of the body portion.

In the shrink packaging container according to an embodiment of the present invention, the 1 st intersection may be R5.0 or less.

[ Effect of the invention ]

According to the present invention, a shrink packaging container can be provided in which a shrink film can be stably filled on the outer peripheral surface thereof even when the outer shape is a special shape, and a product having a good outer shape can be obtained.

Drawings

Fig. 1 is a side view showing the structure of a shrink packing container 10 according to an embodiment of the present invention.

FIG. 2 is a view showing a state in which a trigger sprayer 9 is attached to a shrink-wrapping container 10.

Fig. 3 is a front view showing the structure of a shrink packing container 10 according to an embodiment of the present invention.

Fig. 4 is a rear view showing the structure of a shrink packing container 10 according to an embodiment of the present invention.

Fig. 5 is a bottom view showing the structure of a shrink packing container 10 according to an embodiment of the present invention.

Fig. 6 is a view showing a shrink label attached to a shrink packing container 10 according to an embodiment of the present invention.

[ reference numerals ]

10 … Container for shrink packaging, 11 … head, 12 … shoulder, 12A … 1 st shoulder intersection, 12B … 2 nd shoulder intersection, 13 … trunk, 14 … bottom, 14A … bottom, 14C … tangent plane, 17 … front wall (1 st wall), 17A … concave curved surface, 17B … 1 st inclined surface, 18 … rear wall (2 nd wall), 18A … 2 nd inclined surface, 18B … rd 3 rd inclined surface, H … height, L1 … 1 st straight line, L2 … 2 nd straight line, M1 … 1 st intersection, M2 … nd 2 nd intersection, M3 … bottom intersection, N1 … 1 st position, O … center axis, W … maximum width

Detailed Description

The structure of one embodiment of the shrink packaging container according to the present invention will be described below.

In the drawings, the constituent elements may be shown in different scale sizes depending on the constituent elements in order to facilitate the observation of the constituent elements.

Fig. 1 is a side view showing the structure of a shrink packing container 10 according to an embodiment of the present invention. Fig. 2 is a view showing a state in which the trigger sprayer 9 is attached to the shrink-wrapping container 10.

As shown in fig. 1, the shrink packing container 10 of the present embodiment is formed in a bottle shape in an erected state, and the head portion 11, the shoulder portion 12, the body portion 13, and the bottom portion 14 are arranged along the central axis line in this order from above. In the shrink packaging container 10, the head portion 11, the shoulder portion 12, the body portion 13, and the bottom portion 14 are integrally molded with a predetermined thickness by synthetic resin.

The shrink packaging container 10 is produced by blow molding a raw material resin made of, for example, polyolefin such as polyethylene or polypropylene, polyester such as polyethylene terephthalate, or a synthetic resin obtained by mixing or laminating these materials.

In the following description, the center axis O is set to extend in the vertical direction (vertical direction) and the description is given, but the vertical direction is defined for convenience of description and does not limit the orientation of the shrink packaging container 10 according to the present invention when used.

The head 11 is a cylindrical object formed at the upper end, and is a portion for discharging the contents contained in the container. The cylindrical shape not only means a cylinder having a perfect circular shape in plan view, but also includes a concept of an elliptical shape in plan view. Examples of the contents include liquids such as a cleaning detergent, a kitchen detergent, and a liquid clothing detergent.

The head 11 is equipped with, for example, a trigger sprayer 9. At this time, since the head 11 is screwed to the trigger sprayer 9, a screw portion 16 is formed on the outer periphery of the head 11. The head 11 is inclined forward at a predetermined angle θ 1 toward a tangent plane 14C described later with respect to the central axis O.

Fig. 3 is a front view showing the structure of the shrink packing container 10 according to the embodiment of the present invention.

As shown in fig. 1, the shrink-wrapping container 10 has a laterally asymmetrical outer contour in a side view through the center axis O, and has a laterally symmetrical outer contour in a front view through the center axis O as shown in fig. 3. Referring to fig. 1 and 2, the shrink packaging container 10 has a maximum width at the lowermost portion of the body portion 13.

As shown in fig. 1, when the discharge direction of the trigger dispenser 9 is, for example, the front-rear direction in the outer peripheral surface of the shrink-packing container 10, a front wall surface (1 st wall surface) 17 as the front side and a rear wall surface (2 nd wall surface) 18 as the rear side are asymmetrically opposed to each other via the central axis O. Further, the side wall surfaces 21 and 22 symmetrical to each other are opposed to each other via the central axis O in the left-right direction.

Here, the intersection of the front wall surface 17 and the tangential surface 14C is the 1 st intersection M1, and the intersection of the front wall surface 17 and the shoulder 12 is the 1 st shoulder side intersection 12A. The intersection of the rear wall surface 18 and the shoulder 12 is the 2 nd shoulder intersection 12B, and the intersection of the rear wall surface 18 and the bottom 14 is the bottom intersection M3.

In the side view shown in fig. 1, the front wall surface 17 is recessed inward on the side of the central axis O from the 1 st straight line L1 connecting the 1 st shoulder side intersection 12A of the front wall surface and the shoulder 12 and the 1 st intersection M1 of the front wall surface and the tangential plane 14C. Specifically, the front wall 17 has: a concave curved surface 17A which is concave in a direction in which the distance from the center axis O decreases as going from the shoulder portion 12 to the bottom portion 14 side, and a 1 st inclined surface 17B which is continuous with the lower end side of the concave curved surface 17A and is inclined in a direction in which the distance from the center axis O increases as going to the bottom portion 14 side. The 1 st inclined surface 17B continues to the concave curved surface 17A with a continuous curvature. The front wall surface 17 is curved in a horizontal direction with a prescribed curvature along the outer contour of the bottom 14 in a front view as shown in fig. 3.

The rear wall surface 18 is convex outward in the side view shown in fig. 1, further from the center axis O than a 2 nd straight line L2 connecting a 2 nd shoulder side intersection 12B of the rear wall surface and the shoulder 12 and a bottom side intersection M3 of the rear wall surface and the bottom 14. Specifically, the rear wall surface 18 has: the 2 nd inclined surface 18A, which is at a greater distance from the center axis O as it goes from the shoulder 12 toward the bottom 14, and the 3 rd inclined surface 18B, which is at a lesser distance from the center axis O as it goes from the lower end of the 2 nd inclined surface 18A toward the bottom 14, are not parallel to the center axis O. The 2 nd intersection M2 between the 2 nd inclined surface 18A and the 3 rd inclined surface 18B is located outside the bottom portion 14, and the 3 rd inclined surface 18B is a negatively inclined surface having an inclination direction opposite to the 2 nd inclined surface 18A with respect to the center axis O.

Fig. 4 is a rear view showing the structure of the shrink packing container 10 according to the embodiment of the present invention.

As shown in fig. 4, the rear wall surface 18 of the present embodiment is formed of 4 surfaces having a substantially isosceles triangle shape in plan view, and includes a 4 th inclined surface 18C and a 5 th inclined surface 18D in addition to the 2 nd inclined surface 18A and the 3 rd inclined surface 18B, and the apexes of the inclined surfaces 18A to 18D coincide with the 2 nd intersection M2. The surface structure of the rear wall surface 18 is not limited to this, and may be appropriately changed.

Further, the 2 nd intersection M2 is disposed to be offset to the 1 st position N1 side between the 1 st position N1, which is the minimum diameter of the trunk portion 13 on the concave curved surface 17A, and the 1 st intersection M1. The position of the 2 nd intersection M2 is not limited to this position, and may be changed as appropriate.

The shrink packaging container 10 of the present embodiment has a maximum diameter at the lowermost portion of the body portion 13, and the ratio of the circumferential length of the minimum diameter (the position at the upper end of the shrink film) of the body portion 13 is in the range of 1.2 to 5 times.

The position of the minimum diameter measurement of the body portion in the calculation of the circumferential length ratio is not selected as the minimum diameter position in the entire body portion region, but is selected as the minimum diameter position in the body portion fitting region surrounded by the shrink film fitting.

Fig. 5 is a bottom view showing the structure of the shrink packing container 10 according to the embodiment of the present invention.

As shown in fig. 1, the bottom portion 14 is continuous with the lowermost end of the body portion 13 and includes: a bottom surface 14A intersecting the central axis O, a peripheral edge portion 14B provided on the peripheral edge of the bottom surface 14A, and a cut surface 14C provided on at least a part of the peripheral edge portion 14B. The bottom portion 14 has a U-shape having a curved surface on the front side and a straight line shape on the rear side in plan view (fig. 5). In the present embodiment, the peripheral edge portion 14B is located axially outward of the bottom surface 14A, and the bottom surface 14A is recessed inward. Here, the intersection of the 1 st inclined surface 17B of the trunk portion 13 and the tangential surface 14C of the bottom portion 14 is defined as the 1 st intersection M1. The bottom surface 14A has an area smaller than a cross-sectional area intersecting the central axis O in the lowermost portion (1 st intersection point M1) of the trunk portion 13.

As shown in fig. 1, the cut surface 14C is an inclined surface that is inclined from the lower end of the front wall surface 17 (the 1 st inclined surface 17B) toward the bottom surface 14A in a direction in which the distance from the central axis O decreases. The inclination angle θ 2 of the tangent plane 14C with respect to the central axis O is in the range of 15 ° to 60 °. When the inclination angle θ 2 is 60 ° or more, the area of the bottom surface 14A becomes small, and stability may be impaired, and therefore the inclination angle θ 2 is preferably 60 ° or less.

The height H of the cut surface 14C in the axial direction is preferably 5mm or more, more preferably 10mm or more.

As shown in fig. 5, the cut surface 14C is formed along the outer contour of the peripheral edge portion 14B at a part of the peripheral edge portion. The cut surface 14C is formed in the peripheral edge portion 14B in a range including at least the position (the 1 st intersection M1) farthest from the central axis O, and is provided in a predetermined range on the front side in the left-right direction with respect to the position as the maximum width W.

In the present embodiment, the cut surface 14C is provided only in a part of the circumferential direction of the peripheral edge portion 14B, but the cut surface 14C may be provided over the entire circumference of the peripheral edge portion 14B.

The shrink packing container 10, which is a bottle having a special shape newly designed, has a 3 rd inclined surface 18B having a negative inclination on the rear wall surface 18 side. Therefore, when the shrink label 20 in which the product name, the product description, and the like are described is heat-shrunk, there is a concern that: the shrink label 20 is skewed along the inclination of the outer peripheral surface, particularly along the inclination of the front wall surface 17.

Fig. 6 is a diagram showing how a shrink label is filled in the shrink packing container 10 according to the embodiment of the present invention.

As shown in fig. 6, in the present embodiment, by providing the cut surface 14C at the lower portion of the front wall surface 17 side as shown in fig. 6, the shrink label 20 can be prevented from moving upward, and the shrink label 20 can be favorably loaded in a predetermined range without being skewed. Further, by applying ribs or texturing or the like to the cut surface 14C, the shrink label 20 can be further prevented from moving up.

Further, in the present embodiment, the 1 st intersection M1 between the tangential surface 14C and the 1 st inclined surface 17B is set to R5.0 or less, and the shrink label 20 is prevented from being broken at the 1 st intersection M1. Thus, even in a container having a special shape, the shrinkable label 20 can be stably loaded on the outer peripheral surface thereof, and a product having a good shape can be obtained.

While preferred embodiments of the present invention have been described above with reference to the drawings, it is needless to say that the present invention is not limited to these examples. It is understood that various modifications and changes will become apparent to those skilled in the art within the scope of the technical idea described in the claims, and that these modifications and changes also fall within the technical scope of the present invention.

In the above embodiment, the tangential plane 14C is inclined inward with respect to the central axis O, and the inclination angle θ 2 of the tangential plane 14C with respect to the central axis O is in the range of 15 ° to 60 °, but not limited thereto. For example, the inclination angle θ 2 of the tangent plane 14C with respect to the central axis O may be in the range of 0 ° to 60 °, or may be a structure in which the tangent plane 14C is parallel to the central axis O.

[ Industrial Applicability ]

The present invention is applicable to a container for shrink packaging.

Claims

1. A bottle-shaped shrink packaging container having a head portion, a shoulder portion, a body portion, and a bottom portion along a central axis,

at least a part of the shrink packing container has a laterally asymmetrical shape with respect to the central axis,

the trunk section has: in the asymmetric direction, the bottom sides of the 1 st wall surface and the 2 nd wall surface have the maximum width of the trunk part through the 1 st wall surface and the 2 nd wall surface which are opposite to each other through the central axis,

the bottom portion has a bottom surface intersecting the central axis and a tangent surface provided on at least a part of a peripheral edge of the bottom surface and inclined from a lower end of the 1 st wall surface toward the bottom surface in a direction in which a distance from the central axis becomes smaller,

assuming that an intersection of the 1 st wall surface and the tangent plane is a 1 st intersection, and an intersection of the 1 st wall surface and the shoulder is a 1 st shoulder side intersection, the 1 st wall surface is located on the central axis side of a 1 st straight line connecting the 1 st intersection and the 1 st shoulder side intersection,

when the intersection of the 2 nd wall surface and the shoulder is a 2 nd shoulder side intersection and the intersection of the 2 nd wall surface and the bottom is a bottom side intersection, the 2 nd wall surface is located farther from the center axis than a 2 nd straight line connecting the 2 nd shoulder side intersection and the bottom side intersection and is convex outward,

the tangent plane is formed in the periphery of the bottom surface and at least comprises a range of the position farthest from the central axis.

2. The shrink packaging container according to claim 1, wherein the 1 st wall surface has a concave curved surface that is concave in a direction in which a distance from the central axis becomes smaller as going from the shoulder portion to the bottom portion side, and a 1 st inclined surface that is continuous with the concave curved surface and is inclined in a direction in which a distance from the central axis becomes larger.

3. The shrink packaging container according to claim 2, wherein the 2 nd wall surface of the body portion has a 2 nd inclined surface and a 3 rd inclined surface, the 2 nd inclined surface being at a greater distance from the central axis as going from the shoulder portion to the bottom portion side, and the 3 rd inclined surface being inclined from a lower end of the 2 nd inclined surface so as to be at a smaller distance from the central axis.

4. The shrink packaging container according to claim 3, wherein when the intersection of the 1 st inclined surface and the cut surface is defined as a 1 st intersection and the intersection of the 2 nd inclined surface and the 3 rd inclined surface is defined as a 2 nd intersection,

the 1 st intersection and the 2 nd intersection are located outside the bottom surface,

the 2 nd intersection is disposed between the 1 st intersection and a 1 st position on the concave curved surface that is a minimum diameter of the trunk portion, offset to the 1 st position.

5. The shrink packaging container according to any one of claims 1 to 4, wherein a lowermost portion of the body portion has a maximum diameter, and a circumferential length ratio of a position of the maximum diameter of the body portion to a position of the minimum diameter of the body portion is in a range of 1.2 to 5 times.

6. The container for shrink wrapping according to any one of claims 1 to 4, wherein the head portion is inclined forward toward the tangential plane side with respect to the central axis.

7. The container for shrink wrapping according to any one of claims 1 to 4, wherein an inclination angle of the tangent plane with respect to the central axis is in a range of 0 ° to 60 °.

8. The container for shrink wrapping according to claim 7, wherein an inclination angle of the tangent plane with respect to the central axis is in a range of 15 ° to 60 °.

9. The container for shrink wrapping according to any one of claims 1 to 4, wherein said cut surface is provided over an entire periphery of said bottom surface.

10. The shrink packaging container according to any one of claims 1 to 4, wherein the height of the cut surface in the direction along the central axis is 5mm or more.

11. The shrink packaging container according to any one of claims 1 to 4, wherein the 1 st intersection point is R5.0 or less.