JP3014632U - Thin wall container made of sheet material - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a thin-walled container made of a sheet material that can be easily opened. A connecting part (12) extending in the longitudinal direction, and first and second half parts (1) connected by the connecting part (12).
4 and 16), and is configured to form a space for accommodating an article by bending the connecting portion (12) and overlapping the first and second half portions (14, 16). A thin-walled container (10) made of a sheet material is connected to a connecting part (1).
2) a reinforcing portion (18) extending along the longitudinal direction,
A fragile portion provided adjacent to the reinforcing portion (20).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a thin-walled container made of a sheet material configured to be folded in two and stacked to form a space for storing an article.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, there has been used a thin-walled container in which a sheet material is formed so as to form a space for accommodating an article by folding the connection portion in two and stacking them. Thin-walled containers of this kind, such as the commonly known egg container, are closed by stapling or heat-sealing at the periphery of the container after the items have been stored and the sheets have been stacked. There is.

Recently, containers of this kind are designed to tear open the connection. To that end, tearing threads are provided along the length of the connection. In the conventional technique, the tearing yarn is stretched in the longitudinal direction of the connecting portion and then adhered or heat-welded to the sheet material at both ends thereof. A person who uses the article stored in this container cuts and opens the connecting portion by gripping one end of the tearing yarn and pulling the yarn in the lateral direction of the container.

[0004]

[Problems to be solved by the device]

 However, in such a configuration according to the related art, when the connecting portion is cut when the container is opened, the cutting line is extended from the linear direction of the stretched yarn, that is, the longitudinal direction of the connecting portion to the side wall of the container. Or the other end of the thread attached to the sheet material comes off the sheet material during the opening operation, and there is a problem that the container cannot be opened properly. This invention makes it a technical subject to solve such a problem of a prior art, and aims at providing the thin wall container which consists of a sheet material which can be opened easily.

[0005]

[Means for Solving the Problems]

 The invention according to claim 1 has a connecting portion extending in the longitudinal direction and first and second half-body portions connected by the connecting portion, and the first and second half portions are bent at the connecting portion. A thin-walled container made of a sheet material configured to form a space for accommodating articles by stacking half-parts, a reinforcing part extending along a longitudinal direction of a connecting part, and the reinforcing part. The gist is a thin-walled container having a fragile portion provided adjacent to.

The invention according to claim 11 has a connecting portion extending in the longitudinal direction and first and second half-body portions connected by the connecting portion, and is bent at the connecting portion to form the first and second portions. A thin-walled container made of a sheet material configured to form a space for accommodating articles by stacking the two halves, the inner surface of the connecting portion extending parallel to the longitudinal direction of the connecting portion. The gist of the present invention is a thin-walled container that has two guide portions that are integrally formed by projecting to the above and a reinforcing portion that is disposed between the two guide portions.

[0007]

[Action]

 According to the first aspect of the invention, when a thin-walled container that contains and closes articles is opened, an opening operator grips one end of the reinforcing part and pulls the reinforcing part to connect the connecting part at the fragile part. Is disconnected. According to the eleventh aspect of the present invention, when a thin-walled container in which articles are stored and closed is opened, an opening operator grasps one end of the reinforcing portion and pulls this to connect the reinforcing portion with the guide portion. The part is cut.

[0008]

【Example】

 Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings as an example of a container for storing eggs. First, referring to FIG. 1, a thin-walled container 10 (hereinafter, simply referred to as container 10) is a sheet material made of a thermoplastic synthetic resin such as polyethylene terephthalate or vinyl chloride, and is formed by a mold while applying heat. It is formed by a vacuum forming method. The container 10 includes a connecting portion 12 provided so as to extend in the longitudinal direction, and first and second half body portions 14 and 16 integrally provided on both sides with the connecting portion 12 interposed therebetween. ing. Each of the first and second halves 14 and 16 has a plurality of receiving portions 14a having side walls each having a depth of about ½ of a depth for enclosing an article to be stored inside the container 10. 16a and flanges 14b and 16b formed to surround the receiving portions 14a and 16a along the outer circumference of the container 10.

The container 10 is configured so that a space for accommodating an article is formed by folding the container 10 in half around the connecting portion 12 and overlapping the first and second half portions 14 and 16 with each other. . Further, each of the first and second half portions 14 and 16 has a plurality of support portions 14c and 16 along the center line thereof. Each of the support portions 14c of the first half body portion 14 and each of the support portions 16c of the second half body portion 16 are respectively arranged when the first and second half body portions 14 and 16 are superposed. It is arranged so that the tip portion abuts. The contact between the support portions 14c and 16c stabilizes the shape of the container 10.

The container 10 arranges the articles to be stored in the receiving portion 14a or 16a of one of the first and second half portions 14 and 16, and the first or second article in which the articles are not arranged. After the first and second half portions 14 and 16 are overlapped with each other by folding the two half portions with the connecting portion 12 as the center, the flange portions 14b and 16b are stapled or heat-sealed. Closed at.

In order to open the container 10 thus closed, the container 10 is provided with a reinforcing portion 18 extending along the longitudinal direction of the connecting portion 12 and a fragile portion 20. Further, referring also to FIGS. 2 and 3, as a first embodiment of the present invention, the reinforcing portion 18 is formed by a protruding portion 18 integrally formed so as to protrude from the inner surface of the connecting portion 12. The fragile portion 20 is provided with a plurality of perforations 20 disposed on both sides of the reinforcing portion 18 so as to be adjacent to the reinforcing portion 18 and arranged on a straight line extending in the longitudinal direction of the connecting portion 12. A pair of notches 22 are provided on both sides of the connecting portion 12 with the projecting portion 18 interposed therebetween. The notch 22 extends from the outer edge of the container 10 with a predetermined depth in the longitudinal direction of the connecting portion 12.

Next, the operation of the first embodiment will be described. When the container 10 closed as described above is opened, the unsealing operator uses the notch 22 to pull out one end of the connecting portion 12 together with the protruding portion 18 as the reinforcing portion to connect the connecting portion 12 to the outside. The part 12 is pulled so as to be cut. Since a plurality of perforations 20 are formed on both sides of the protruding portion 18 as weak portions arranged on a straight line extending in the longitudinal direction of the connecting portion 12, the connecting portion 12 is cut at this portion and the connecting portion 12 of the prior art is cut. Thus, the container 10 is easily opened without the cutting line deviating from the straight line extending in the longitudinal direction of the connecting portion 12. Further, since the projecting portion 18 is integrally formed with the connecting portion 12, the projecting portion 18 as a reinforcing portion for cutting does not fall off from the connecting portion 12 during the cutting work unlike the prior art.

Next, a second embodiment of the present invention will be described with reference to FIG. Similarly to FIG. 3, FIG. 4 is a partial cross-sectional view in which a part of the connecting portion 12 is cut in a direction perpendicular to the longitudinal direction of the connecting portion 12. In the second embodiment of the present invention, a thread member 18 is provided as a reinforcing portion in FIGS. 2 and 3 instead of the protruding portion integrally formed with the connecting portion 12. The filamentous member 18 is extended in the longitudinal direction of the connecting portion 12, and is attached to the inner surface of the connecting portion 12 by heat fusion, preferably ultrasonic heat fusion, over the entire length thereof. A plurality of perforations 20 are formed as fragile portions on both sides of the thread member 18. The second embodiment operates in substantially the same way as the first embodiment. Since the filamentous agent 18 is attached to the inner surface of the connecting portion 18 over the entire length thereof, the filamentous material is used as a reinforcing portion for cutting during the cutting work as in the prior art which is attached only at both ends. The member 18 does not fall off the connecting portion. Therefore, in combination with the provision of the fragile portion 20, the container 10 can be easily opened without the cutting line deviating from the longitudinal direction of the connecting portion 12.

Next, a third embodiment of the present invention will be described with reference to FIG. In the second embodiment, the perforations 20 as the fragile portion are arranged in the longitudinal direction of the connecting portion 12 on both sides of the thread member 18 as the reinforcing portion, but in the third embodiment of the present invention, As shown in FIG. 5, the connecting portion 12 is arranged below the thread member 20.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. In the first to third embodiments of the present invention described above, the fragile portion is constituted by a plurality of perforations arranged in the longitudinal direction of the connecting portion 12 so as to be adjacent to the reinforcing portion. In the embodiment, as shown in FIGS. 6 and 7, the groove portion 20 is formed so as to be adjacent to the projecting portion 18 as a reinforcing portion and extend in the longitudinal direction of the connecting portion 12. In addition, in the fourth embodiment, the notch 22 is formed in the groove 20 so as to extend in the longitudinal direction of the connecting portion 12 with a predetermined length.

The fourth embodiment operates similarly to the previously described embodiments. That is, when the container 10 is opened, the notch 22 is used to pull out one end of the connecting portion 12 together with the protruding portion 18 to the outside so as to cut the connecting portion 12. Since the groove portions 20 are formed as fragile portions on both sides of the protruding portion 18, the connecting portion 12 is cut at this portion and the cutting line does not deviate from the longitudinal direction of the connecting portion 12 as in the conventional technique. The container 10 is easily opened. Further, since the projecting portion 18 is integrally formed with the connecting portion 12, the projecting portion 18 as a reinforcing portion for cutting does not fall off from the connecting portion 12 during the cutting work unlike the conventional technique.

Next, a fifth embodiment of the present invention will be described with reference to FIGS. In the fifth embodiment, a protruding portion 18 that protrudes from the inner surface of the connecting portion 12 and extends in the longitudinal direction as a reinforcing portion, and a pair of ribs 24 that extend in the longitudinal direction of the connecting portion 12 on both sides of the protruding portion 18 as guide portions. Is provided, and the notch 22 is formed between the protrusion 18 and the rib 24 so as to extend in the longitudinal direction of the connecting portion 12 with a predetermined length.

The operation of the fifth embodiment will be described. Similar to the previous embodiments, when the container 10 is opened, one end of the connecting portion 12 is pulled out together with the protruding portion 18 by utilizing the notch portion 22 and the connecting portion 12 is pulled by pulling this end portion. Be disconnected. When the connecting portion 12 is cut, a cutting line from the cut portion 22 increases inside the connecting portion 12. Since the ribs 24 as guide portions are formed on both sides of the protruding portion 18, particularly on the outer side of the notch portion 22, the above-mentioned cutting line should be beyond the rib 24 and deviated from the longitudinal direction of the connecting portion 12. Without, the container 10 is easily opened. Further, since the projecting portion 18 is formed integrally with the connecting portion 12, the protruding portion 18 as a reinforcing portion for cutting does not fall off from the connecting portion 12 during the cutting work as in the conventional technique. This is similar to the above-mentioned embodiment.

Next, a sixth embodiment will be described with reference to FIGS. The sixth embodiment is configured similarly to the fifth embodiment except that a groove portion 22 as a weak portion is provided between the protruding portion 18 as a reinforcing portion and the rib 24 as a guide portion. Has been done. By forming the groove portion 20 between the protruding portion 18 and the rib 24, it becomes possible to cut the connecting portion 12 more easily than in the fifth embodiment.

Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, and modifications and changes can be made without departing from the spirit and scope thereof. Not to mention that. For example, although the thin-walled container 10 as a preferred embodiment of the present invention has been described by taking chicken eggs as an example of the product to be stored therein, the thin-walled container 10 is configured to store other foods and industrial products. You may. In this case, it goes without saying that the receiving portions 14a and 16a of the first and second half-body portions 14 and 16 are molded into a shape that matches the shape of the article to be stored.

In FIGS. 2, 3 and 6 to 11, the reinforcing portion is shown by the protruding portion 18. However, the protruding portion 18 as the reinforcing portion in the corresponding embodiment is similar to FIGS. It is also possible to configure by attaching the thread member.

Although the fragile portion is shown as the groove portion 20 in FIGS. 10 and 11, a plurality of perforations may be arranged between the protruding portion 18 and the rib 24 in the longitudinal direction of the connecting portion 12. In addition, in FIGS. 2 to 7 and FIGS. 10 and 11, the fragile portion is illustrated as being immediately adjacent to the reinforcing portion, but the fragile portion is located at a position slightly separated from the reinforcing portion and the longitudinal direction of the connecting portion 12 is long. It may be arranged in any direction. In short, the fragile portion may be provided so that the connecting portion 12 can be cut linearly.

In the accompanying drawings, the protrusions 18 and the ribs 24 are illustrated as having a generally rectangular cross-sectional shape, but may have a triangular or semi-circular cross-sectional shape. In particular, it is preferable that the rib 24 has, for example, a triangular shape so as to prevent interference with the reinforcing portion and other components when the rib 24 is folded in two. Further, the aspect ratios of the protrusions 18 and the ribs 24 may be formed in a strip or tape shape that is long in the lateral direction, unlike the one shown in the drawing.

In addition, in FIG. 2, the notch 22 is provided outside the perforation 20 as a fragile portion which is linearly arranged in the longitudinal direction of the connecting portion 12. However, the notch 22 is formed on the same line as the perforation 20. May be done. Further, when the perforation 20 is arranged apart from the protrusion 18 with a predetermined distance, it may be formed between the protrusion 18 and the perforation 20.

In the illustrated embodiment, the projecting portion and the filamentous member as the reinforcing portion are illustrated so as to match the outer edges of the container 10 at both ends thereof, but they may be projected from the outer edge of the container 10. Good. In this case, the notch 22 is not always necessary. However, as will be understood from the above description, the notch 22 acts as the starting point of the cutting line at the time of cutting, thereby facilitating the cutting, so that the projecting portion and the thread-like member are attached to the container 10. It is also advantageous to provide when projecting from the outer edge of the.

Further, although the material of the filamentous member 20 is not described in the above-mentioned embodiments, the filamentous member 20 may be an elongated member having a higher tensile strength than the sheet material forming the container 10, For example, it can be constituted by a cotton thread or other thread made of natural fiber, metal fiber or synthetic fiber, or a similar member. The protruding portion 18 can be integrally molded with the container 10 not only from the same material as the sheet material forming the container 10 but also from a different synthetic resin or another material.

[0027]

[Effect of device]

 According to the first aspect of the invention, when a thin-walled container that contains and closes articles is opened, an opening operator grips one end of the reinforcing part and pulls the reinforcing part to connect the connecting part at the fragile part. Is cut and the cutting line is prevented from deviating from the straight line in the longitudinal direction of the connecting portion. Further, by arranging the fragile portion in the longitudinal direction of the connecting portion, when the first and second half portions are superposed by folding the connecting portion in two, this double-folding work becomes easy.

According to the eleventh aspect of the invention, when opening a thin-walled container in which articles are stored and closed, the unsealing operator grasps one end of the reinforcing portion and pulls the reinforcing portion so that the guiding portion is provided. The connection part is cut along the line, and the cutting line is prevented from deviating from the straight line in the longitudinal direction of the connection part.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a thin-walled container made of a sheet material according to the present invention.

FIG. 2 is an enlarged plan view in the vicinity of one end of the connecting portion of the thin-walled container according to the first embodiment of the present invention.

FIG. 3 is a sectional view taken along the line III-III in FIG.

FIG. 4 is a sectional view similar to FIG. 3, and is an enlarged sectional view in the vicinity of one end of a connecting portion of a thin wall container according to a second embodiment of the present invention.

FIG. 5 is a sectional view similar to FIG. 3, and is an enlarged sectional view in the vicinity of one end of the connecting portion of the thin-walled container according to the third embodiment of the present invention.

FIG. 6 is an enlarged plan view of the vicinity of one end of a connecting portion of a thin wall container according to a fourth embodiment of the present invention.

7 is a sectional view taken along the line VII-VII in FIG.

FIG. 8 is an enlarged plan view of the vicinity of one end of a connecting portion of a thin wall container according to a fifth embodiment of the present invention.

9 is a cross-sectional view taken along the line IX-IX in FIG.

FIG. 10 is an enlarged plan view of the vicinity of one end of a connecting portion of a thin wall container according to a sixth embodiment of the present invention.

11 is a sectional view taken along the line XI-XI in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Thin-walled container 12 ... Connection part 14 ... 1st half part 16 ... 1st half part 18 ... Reinforcement part 20 ... Fragile part 22 ... Notch part 24 ... Guide part

Claims (21)

[Scope of utility model registration request] 1. A connecting part extending in the longitudinal direction and first and second half-parts connected by the connecting part, and the first and second half-parts are overlapped by bending at the connecting part. In a thin-walled container made of a sheet material configured to form a space for accommodating an article, a reinforcing portion extending along the longitudinal direction of the connecting portion and a portion adjacent to the reinforcing portion are provided. Thin-walled container having a weakened portion. 2. The thin-walled container according to claim 1, wherein the reinforcing portion is integrally formed so as to protrude from the inner surface of the connecting portion. 3. The thin-walled container according to claim 1, wherein the reinforcing portion is a thread-shaped member attached to the inner surface of the connecting portion over the entire length in the longitudinal direction. 4. The thin-walled container according to claim 1, wherein the fragile portion includes a plurality of perforations arranged along both sides of the reinforcing portion along the longitudinal direction. 5. The thin wall container according to claim 1, wherein the fragile portion is formed in a groove shape extending in the longitudinal direction on both sides of the reinforcing portion. 6. The thin-walled container according to claim 1, further comprising notches extending from the outer edge of the thin-walled container in the longitudinal direction of the connecting portion on both sides of the reinforcing portion at both ends of the connecting portion. The thin-walled container according to any one of 5 above. 7. The thin-walled container according to claim 6, wherein the cutout portion is arranged between the reinforcing portion and the fragile portion. 8. The thin-walled container according to claim 6, wherein the cut portion is arranged on the same straight line as the weakened portion. 9. A connecting part extending in the longitudinal direction and first and second half parts connected by the connecting part, and the first and second half parts are overlapped by bending at the connecting part. In a thin-walled container made of a sheet material configured to form a space for accommodating articles by being combined, the container is integrally formed by extending parallel to the longitudinal direction of the connecting portion and projecting to the inner surface of the connecting portion. Thin-walled container having two guide portions that are formed and a reinforcing portion that is disposed between the two guide portions. 10. The thin-walled container according to claim 9, wherein the reinforcing portion is integrally formed so as to protrude from the inner surface of the connecting portion. 11. The thin-walled container according to claim 9, wherein the reinforcing portion is formed of a thread-like member attached on the inner surface of the connecting portion over the entire length in the longitudinal direction. 12. The thin wall container according to claim 9, further comprising a fragile portion provided between the reinforcing portion and the guide portion. 13. The thin-walled container according to claim 12, wherein the weakened portion comprises a plurality of perforations arranged along both sides of the reinforcing portion along the longitudinal direction. 14. The thin-walled container according to claim 12, wherein the fragile portion is formed in a groove shape extending in the longitudinal direction on both sides of the reinforcing portion. 15. The thin-walled container according to claim 9, further comprising notches extending from the outer edge of the thin-walled container in the longitudinal direction of the connecting portion on both sides of the reinforcing portion at both ends of the connecting portion. The thin-walled container according to any one of 11 above. 16. The thin-walled container is further provided with notches extending from the outer edge of the thin-walled container in the longitudinal direction of the connecting portion on both sides of the reinforcing portion at both ends of the connecting portion.
15. The thin-walled container according to any one of 1 to 14. 17. The thin-walled container according to claim 15, wherein the cutout portion is arranged between the reinforcing portion and the guide portion. 18. The thin-walled container according to claim 16, wherein the cut portion is provided between the reinforcing portion and the fragile portion. 19. The thin-walled container according to claim 16, wherein the cut portion is arranged on the same straight line as the weakened portion. 20. The thin wall container according to claim 1, wherein the sheet material is made of polyethylene terephthalate. 21. The thin wall container according to claim 1, wherein the sheet material is vinyl chloride.