JPH0589216U - Connecting container - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the separation of a synthetic resin connecting container into each container and to facilitate heat sealing of the lid material. [Structure] A plurality of containers 1 are connected by a flat plate flange edge 2 to be integrally formed, and a thickness t of 0.4 to 0.6 mm is provided on one side of the connecting portion of the flange edge 2 between the containers 1 and 1. A cut groove 3 having a substantially V-shaped cross section is formed by leaving. [Effect] It has sufficient strength for handling, and can be easily torn and separated at the notch groove without distortion, and the traces of tears are also clean, and heat sealing of the lid material is easy and sufficient sealing. The width can be secured.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a synthetic resin container that can be suitably used mainly as a packaging container for processed foods such as tofu, and more particularly to a connected container integrally formed by connecting a plurality of containers so that they can be separated at a connecting portion.

[0002]

[Prior art]

 In recent years, as a packaging container for tofu and other processed foods, multiple containers are integrally connected so that the contents can be individually packaged and packaged in a unit amount such as a single usage amount. A container is emerging. It is desired that such a connecting container can be easily separated at the connecting portion of each container and, on the other hand, can have sufficient rigidity so as not to cause an obstacle such as bending in handling.

As a connection container in consideration of the above points, a container in which a thin portion having a thin width is provided at a connection portion by a flange edge between containers is further provided along both sides of the thin portion having a small thickness. A container provided with ridges (dams) has been proposed (Japanese Utility Model Laid-Open No. 64-35814).

[0004]

[Problems to be solved by the device]

 However, in the proposed connecting container, as shown in FIG. 4, the narrow and thin portion (13) provided for separating each container (11) is provided on both sides of the container (11). Since it is continuous with the rounded curved surface from 14) and has a width, when tearing at this thin portion (13), the tear may occur depending on the material and thickness of the synthetic resin. The line may be distorted, and once the tear line reaches the ridge, it cannot be easily returned to its original position.

Further, in this type of container, a lid material (15) made of a synthetic resin film is attached to the flange edge (12) extending from the opening end in a state where the contents are stored in each container (11). ) Is heat-sealed, but if the thin portion (13) has ridges (14) on both sides as described above, the heat-pressing plate for sealing should be considered in consideration of this. Not only is it necessary to narrow the seal width by making the shape intricately matched to the ridges, or to eliminate the ridges (14), but the sealing performance deteriorates, which is not preferable in practice. Absent.

The present invention has been made in view of the above, and when a synthetic resin connecting container is separated for each container, the connecting portion can be torn without distortion, and at the time of heat sealing the lid material. It is intended to provide a connected container capable of ensuring a sufficient seal width without having to consider the shapes of the heating and pressing plate and the pedestal.

[0007]

[Means for Solving the Problems]

 The present invention, which solves the above-mentioned problems, is a connecting container made of a synthetic resin in which a plurality of containers are connected together by a flat plate flange edge, and a connecting portion at the flange edge between the containers is provided. Is characterized in that a notch having a substantially V-shaped cross section is formed on one side of the groove while leaving a thickness of 0.4 to 0.6 mm.

If the residual thickness at the location of the cut groove is less than 0.4 mm, the weight of the container accommodating the content easily causes bending, and if it is more than 0.6 mm, it becomes difficult to separate.

[0009]

[Action]

 According to the above-mentioned connecting container, a cut groove having a substantially V-shaped cross section is formed on one side of the connecting portion at the flat flange edge of each container leaving a required thickness, and the minimum thickness of the remaining thickness portion is minimum. Since the thickness is 0.4 to 0.6 mm and the minimum thickness part is linear, it is easy to distort the cut groove when separating each container. It can be torn apart. Further, even when the tear line is distorted from the position of the notch groove, it is easy to return to the original position of the notch groove, and as a result, the distortion of the tear line hardly occurs.

Moreover, since only the cut groove is formed in the flat flange edge, when the lid material made of the synthetic resin film is heat-sealed to the flange edge in a state where the contents are filled and stored in each container. Since the flange edge does not have extra ridges, the seal width can be increased without considering the shape of the heating plate for the seal or the pedestal.

[0011]

【Example】

 Next, one embodiment of the connecting container of the present invention will be described with reference to the drawings.

FIG. 1 and FIG. 2 show three connected containers (A) integrally formed by connecting three containers (1) with a flat plate-like flange edge (2) having flat upper and lower surfaces. Polyolefin resin, polypropylene resin and other polyolefin resins, polyvinyl chloride resin and other synthetic resins are integrally molded. The wall thickness of the container (1) and the flange edge (2) extending from the open end (1a) of each container (1) varies depending on the material resin and capacity, but is usually 0.8 to 1 It is 0.2 mm.

A notch groove (3) having a substantially V-shaped cross section is formed on the upper surface of the flange edge (2) between the containers (1) and (1) on the lower surface of the connecting portion at the center in the width direction. It is formed so as to leave a thickness (t) of 4 to 0.6 mm, and can be torn and separated at the location of the cut groove (3). Further, notches (4) for assisting the initiation of tearing are provided at both ends of the cut groove (3).

As shown in the enlarged view of FIG. 3, the cut groove (3) having a substantially V-shaped cross section is preferably formed such that both inner surfaces of the groove are continuous with the lower surface of the flange edge (2) by a rounded curved surface. The opening angle (β) of the cut groove (3) is 45 ° to 75 °, preferably about 60 °. Further, it is preferable to provide the cut groove (3) on the lower surface of the flange edge (2) because the shape retention strength against bending when the container holding the contents is lifted is increased. Of course, it is also possible to form the cut groove (3) on the upper surface of the flange edge (2).

The above-mentioned connecting container (A) stores processed foods such as tofu in each container (1) and then heat seals a lid material (5) such as a synthetic resin film to the flange edge (2). And seal. At this time, since the upper surface of the flange edge (2) is flat and there is no extra convex portion on the lower surface, the pressing surface of the heat pressing plate for heat sealing or the receiving surface of the receiving table is flat. The surface can be heat-sealed against the upper surface of the flange edge (2), which ensures a sufficient sealing width. In addition, perforations and the like are formed in the lid material (5) at positions corresponding to the cut grooves (3), if necessary.

When the one end of the connecting container (A) is gripped and lifted in the state where the contents are enclosed as described above, it is easily bent at the cut groove (3) of the flange edge (2). It has a sufficient strength to prevent tearing and can be easily torn without distortion at the location of the notch groove (3) when separating each container (1).

According to the experiment, when the residual thickness (t) is less than 0.4 mm, tearing is easy, but when the container is lifted while the contents are stored, the strength is not sufficient. When the thickness (t) was 0.4 to 0.6 mm, it was difficult to tear when the thickness (t) was 0.4 to 0.6 mm, and easily distorted even when the container was lifted. It could be torn without tearing and its fracture surface was clean.

[0018]

[Effect of the device]

 As described above, according to the connecting container of the present invention, it is possible to retain sufficient strength in the connecting portion by the flange edge of each container, and to have a substantially V-shaped cross section on one side of the connecting portion when separating each container. It can be easily torn without distortion at the notch groove, and the tear marks are also clean. Moreover, it is possible to secure a sufficient seal width without being restricted by the shape of the heating and pressing plate and the pedestal when heat sealing the lid material.

Therefore, the tofu and other processed foods, etc. can be suitably used as a container in which a required amount is individually stored in a packaged state and packaged, and a necessary amount is cut off each time to be used.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view of the same.

FIG. 3 is an enlarged cross-sectional view of a connecting portion by a flange edge.

FIG. 4 is an enlarged cross-sectional view of a conventional connecting portion.

[Explanation of symbols]

 (A) Connection container (1) Container (2) Flange edge (3) Notch groove (5) Lid material

Claims (1)

[Scope of utility model registration request] 1. A connecting container made of synthetic resin, which is formed by connecting a plurality of containers with a flat flange edge and integrally forming the container.
On one side of the connecting portion at the flange edge between the containers, 0.
A connected container, characterized in that a cut groove having a substantially V-shaped cross section is formed leaving a thickness of 4 to 0.6 mm.