JP4458595B2 - Distribution package - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, a liquid, granular or powdery food or beverage such as seasonings and beverages, cosmetics and medicines, etc. are packaged as contents, and the contents can be extracted by a one-touch operation. It relates to a package.
Specifically, when extracting the contents stored in the pocket, the protruding body provided on the lid surface can be used as a discharge port for the contents by bending the package with a finger of one hand. The present invention relates to a distribution package having a structure that can be easily broken and opened.
[0002]
[Prior art]
Conventionally, many small-sized distribution packages that can easily extract contents by pinching with a finger and performing a bending operation have been proposed.
For example, the package disclosed in Japanese Patent Laid-Open No. 63-162460, Japanese Utility Model Publication No. 3-1419, and the like. In other words, all of these form a pocket by attaching the peripheral edge of a flexible container to the back of a relatively solid and flat sheet-like lid, and enclose the contents in this pocket. In addition, in order to make it easy to fold the lid, an axis passing through the center of the back surface of the lid is provided with a fold line having a cut (half cut) or the like about half the thickness of the perforation or lid material, In order to facilitate the extraction of the contents, a projection having a pyramid shape or a truncated cone shape is formed at the center of the axis.
[0003]
In use, the package is sandwiched between fingers, the lid is bent into a V shape so as to press both sides of the pocket centering on the axis of the lid, and the protrusion provided on the folding line of the lid is broken. The contents are extracted from the opening.
The package described in Japanese Patent Laid-Open No. 63-162460 has protrusions that can be opened at two portions on the fold line in the center of the lid, and four pocket portions are sandwiched between the fold lines. The two opposing pockets are configured to communicate with each other via a “connection wall” (communication part) provided below the protrusion on the fold line, The shapes of the pocket portions are similar to each other with the same volume.
In addition, the package described in Japanese Utility Model Publication No. 3-1419 is provided with two openable protrusions on the fold line at the center of the lid, and the two pocket parts are opposed to each other across the fold line. However, the respective pocket portions are structured to communicate with different ones of the communicating portions respectively provided below the two protruding portions.
[0004]
[Problems to be solved by the invention]
However, these conventional distribution packages are half-cut to the extent that the contents do not leak in order to provide a protruding discharge means (hereinafter also referred to as “protrusions”) at the center of the lid or to facilitate opening. However, the thickness of the sheet material forming the protrusions is uniform throughout or is gradually reduced to the tip of the protrusions. Therefore, even if the package is sandwiched between fingers and bent into a V shape so as to press both sides of the pocket centering on the axis of the lid, the protrusions are not broken well and often the opening for discharging contents There is a problem that some parts are difficult to form completely.
The object of the present invention is to eliminate such problems and to distribute the packaging so that the protrusion can be accurately and easily destroyed and opened by anyone who operates it when extracting the contents from the distribution packaging. Is intended to provide a body.
As a result of the trial manufacture and research of distribution packages of various forms in order to solve this problem, the present inventor has found that the thickness of the sheet layer forming the side wall portion of the protrusion is one of the factors that makes it difficult to sufficiently destroy the protrusion. It was discovered that it is influenced by the difference in the distribution situation. As a result of further pursuing this, when forming the distribution package, the thickness of the sheet layer that forms the upper and lower portions of the projection side wall of the lid is made thicker than the thickness of the sheet layer that forms the central portion of the projection side wall. Once formed, it was confirmed that the tip of the projection of the distribution package body was easily broken by bending, and was completely opened, and the present invention was completed. Although the reason for this is not clear, the acting force generated when the lid is bent is that the thickness of the sheet layer at the center of the protrusion is made thinner than the upper and lower parts, so that the protrusion side wall is bent in a bow shape and the protrusion tip (opening) It is presumed that a large repulsive force is generated together with the bending action force to the position where the protrusion is started, and this is added, so that the tip of the protrusion is likely to be broken.
[0005]
[Means for Solving the Problems]
That is, in order to achieve the above-mentioned object, the present invention has a lid made of a hard material having a folding line provided with a half-cut portion at the center of the surface and a tip-like ejection means, and a peripheral portion on the back surface of the lid. In the distribution package body, which is composed of a container body of a flexible member that is fixed and forms pocket portions on both sides of the fold line, and each pocket portion communicates with a communication portion positioned below the fold line of the lid, The thickness of the sheet material forming the upper part and the lower part of the side wall of the protrusion of the discharge means is at least thicker than the thickness of the sheet material forming the central part of the side wall of the protrusion.
In this case, if the protrusion is in a pyramid shape or a conical shape, the protrusion tip end portion may be more reliably broken and easily opened by folding the lid.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described by way of examples with reference to the drawings.
FIG. 1 is a perspective view showing an external shape of an embodiment of a distribution package according to the present invention, and FIG. 2 is an enlarged view of a main part of a projection 5 taken along line XX of FIG. 3 is an enlarged view of a main part showing an example of the protrusion 5 of the conventional distribution package, and FIG. 4 is an enlarged view of an essential part of another example of the protrusion 5 of the conventional distribution package.
In FIG. 1, 1 is a distribution package according to the present invention, and 2 is a sheet having a thickness of about 240 μm made of a hard material that can be bent such as synthetic resin (for example, polyethylene, polyethylene terephthalate, or polystyrene copolymer). It is a lid formed of a material. Half-cut 4 is made on the folding center (also referred to as the axis) of the center of the surface of the lid 2, and when the lid 2 is bent, the half-cut 4 is broken and the pyramid-shaped protrusion 5 has a base of 4 mm and a height of 3 mm. 4 'has an open structure. In the embodiment of the present invention, as shown in the enlarged view of the main part of FIG. 2, the thickness of the sheet material at the upper side wall 6 is 170 to 180 μm, the thickness of the sheet material at the lower side wall 7 is 170 to 180 μm, The thickness of the sheet material in the central portion 8 is 140 to 160 μm, that is, the thickness of the sheet layers in the upper and lower portions 6 and 7 is formed thicker than the thickness of the sheet material in the central portion 8.
[0007]
In forming the protrusions 5, the template with the protrusions that are usually overheated is pressed against one side (rear surface) of the sheet material to bulge the surface into a convex shape in many cases. Accordingly, the thickness of the sheet material forming the upper, middle, and lower parts 6, 8, and 7 on the side wall of the projection 5 varies depending on the material of the sheet material of the lid 2 and the adjustment level of the heating temperature of the template. Show. For example, when the heating temperature is high, the upper portion 6 becomes thinner than the lower portion 7, or the sheet materials of the upper, middle, lower, and sixth portions of the protrusions 5 are formed to be substantially uniform. This application avoids forming the protrusion 5 of such a distribution package 1, and forms the center part 8 of the protrusion 5 so that it may become thinner than the lower parts 6 and 7 on it. 3 and 4, the sheet material forming the sidewalls of the protrusions 5 is uniform in thickness of the upper, middle, lower, 6, 8 and 7, and the sheet material is thinner as it is closer to the upper part 6 of the protrusions 5. The example of the formation state of the processus | protrusion 5 of each conventional distribution package 1 is shown, respectively.
[0008]
By the way, based on the embodiment of the present invention (FIG. 2) and the example of the conventional distribution packaging body FIGS. 3 and 4, each 1,000 distribution packaging body 1 is prepared, and the lid 2 is connected to the pocket portion 3. , 3 are bent so as to contact each other, and a comparative test is performed in which the protrusion 5 is opened. As a result, all the protrusions 5 based on the embodiment of the present invention (FIG. 2) are completely opened from the tip 4 '. 6 were incomplete openings (0.6%), and those based on FIG. 4 were incomplete openings (1.3%). The cause is not clear, but by making the central portion 8 of the side wall of the protrusion 5 thinner than the upper and lower portions 6, 7, when the lid 2 is bent, the central portion 8 of the protrusion 5 turns back like a bow and the reaction force is It is presumed that it became easy to open by being added to the tip portion 4 'of 5.
By these comparative tests, it was confirmed that the example product of FIG. 2 based on the present invention can be supplied to the market with peace of mind as a product that does not cause defective products when used.
Further, in order to avoid redundant description, detailed description is omitted. However, in the present invention, the shape of the protrusion 5 is not limited to the pyramid shape as described above, but may be a conical shape having a pointed portion 4 ′. It goes without saying that the effects of the above are exhibited.
[0009]
【The invention's effect】
As described above in detail, the distribution package according to the present invention is configured such that the thickness of the sheet material forming the upper and lower portions of the side wall of the protrusion formed on the lid is larger than the thickness of the sheet material forming the central portion of the protrusion side wall. Since it is formed thick, the central part of the side wall is bent in a bow shape when the lid is bent, and the repulsive force is transmitted to the tip part of the protrusion, so that a larger breaking force is applied and the opening can be completed.
Therefore, in use, the product can be supplied to the market as a product of a distribution package without any defective discharge of contents.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a distribution package according to the present invention.
2 is an enlarged cross-sectional view of the main part of the protrusion of the lid 2 taken along the line XX of FIG. 1. FIG. 3 is a main part showing a conventional example in which the thickness of the sheet material of the protrusion of the distribution package is uniform. enlarged cross-sectional view.
FIG. 4 is an essential part enlarged cross-sectional view showing another conventional example in which the thickness of the sheet material of the protruding portion becomes thinner as it approaches the tip.

Claims (2)

A lid made of a hard material having a folding line provided with a half-cut part at the center of the surface and a discharge means in the form of a pointed protrusion, and a peripheral part fixed to the back surface of the lid, and pockets can be formed on both sides of the folding line. A sheet comprising a container body of a flexible member, each pocket portion communicating with a communicating portion located below a folding line of the lid, and forming upper and lower side walls of the protrusion of the discharge means A distribution packaging body, characterized in that the thickness of the material is at least greater than the thickness of the sheet material forming the central portion of the side wall of the projection. 2. The distribution package according to claim 1, wherein the protrusion has a pyramid shape or a cone shape.

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