JPS6169572A - Vessel for packaging - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a structure in which a flanged lid body for the pack body is attached to one side edge of a flanged pack body formed of a thin sheet made of synthetic resin. This invention relates to an improvement in a packaging container such as an egg bag container that is integrally connected via a hinge.

[Conventional technology]

Conventionally, in this type of packaging container, after the contents are put into the bank body, a lid body connected via a hinge is placed on the bank body, and the flange of the pack body and the flange of the lid body are connected as described above. It is well known that the portion on the opposite side of the hinge portion is partially fixed with a stapler or partially fixed by heat sealing for sealing. However, when sealing in this way, stapling or partially heat-sealing the flange of the pack body and the flange of the lid requires a great deal of effort. Stapling when the material is hardened would result in the flange being torn, and partial heat-sealing required strict temperature control of the heating platen. Moreover, in order to open the container, it is necessary to grasp both flanges with both hands and pull in the opposite direction to separate the stapled or heat-sealed parts, and during this pulling, the stapled or heat-sealed parts must be pulled apart. Opening the container is troublesome, as there is a risk that the container may fall over and the contents may be scattered if the fused parts break, especially if the container is an egg carton containing heavy eggs. The risk of the container tipping over is even greater.

Therefore, as a prior art, Japanese Utility Model Publication No. 52-40992 discloses that a perforation-like cut line is carved in the hinge portion and the package is opened by cutting along the cut line. The publication proposes that the flange portion to be stapled or heat-sealed is provided with a perforation-like score line, and the package is opened by tearing along the score line.

[Problem that the invention seeks to solve]

However, in order to make it easier to tear along the perforation-like score lines, the intervals between the score lines are narrowed (if this is done, the score lines may be accidentally torn during the manufacture or transportation of the container, and the container If the interval between the score lines is increased to prevent rips during the production or transport of a container, it becomes difficult to tear along the kerf lines and open the package, so there is a conflict between ease of opening and a decrease in the strength of the container. In addition, the durability of the cutter used to make the cut lines was low (and it took a lot of effort to maintain the cutter).

The present invention solves the above-mentioned problems by using a pressure-sensitive adhesive to securely seal the lid to the pack body in this type of container.

[Means for solving problems]

The gist of the present invention is that a flanged lid body for the pack body is integrally connected to one side edge of a flanged bank body formed of a thin synthetic resin sheet via a bendable hinge part. In the packaging container, one of the flange of the pack body and the flange of the lid has a flange on one side along the other side edge opposite to and substantially parallel to the hinge part. A tape having a pressure-sensitive adhesive is provided along the tape, the pressure-sensitive adhesive of the tape is affixed to the other flange side, and one end or both ends of the tape extend along the other side edge. is made to protrude outside from the flange, and the end thereof is formed into a knob piece that is folded so that the pressure-sensitive adhesive is not exposed.

[Action and effect]

With the above configuration, the present invention allows both flanges to be bonded together using the pressure-sensitive adhesive of the tape, so there is no need to use conventional means such as stapling or heat fusion when sealing the container. It can be sealed quickly and easily with one touch.

Moreover, when opening the package, all you have to do is pull the flanges apart from each other and peel off the adhesive inside the through hole or notch, or peel off the tape from the flange. Since there is no force when the attachment point tears, the container does not fall over (it can be opened safely and easily).

Furthermore, in the present invention, there is no perforation-like cut line in the hinge portion where both flanges connect, so the reduction in the strength of the flange is unrelated to the ease of opening. It will not be damaged.

Furthermore, one or both ends extending along the longitudinal direction of the tape and extending outward from the other side edge of the flange are folded so that the pressure-sensitive adhesive portions of the tape are brought together so as not to expose the pressure-sensitive adhesive on one side. Because it is formed into a pick piece,
The strength of the knob portion can be increased when the knob portion is picked and pulled with fingers.

And since the pressure-sensitive adhesive is not exposed in this tab on the part of the tape that protrudes to the outside of the packaging container,
This has the effect that there is no inconvenience such as sticking to other containers or inadvertently opening the container when trying to remove the adhesion from the container.

〔Example〕

The present invention will be explained below with reference to drawings (Figs. 1 to 4) of examples. In the drawings, 1 is a container vacuum-formed from a thin sheet of synthetic resin such as vinyl chloride resin or styrene resin; , consisting of a puff body 2 and a lid 3 for the pack body 2, both the pack body 2 and the lid 3 are each provided with a flange 4.5 projecting substantially horizontally outward from each periphery thereof, and the pack The main body 2 and the lid 3 are integrally connected via a bendable hinge portion 6 at one side edge of both.

In the flange 4 of the pack body 2, a plurality of through holes 7 are bored at appropriate intervals along the other side edge on the side opposite to and parallel to the hinge part 6. On the other hand, on the lower surface of the flange 4 where the through hole 7 is formed, a tape 9 coated with a pressure-sensitive adhesive 8 on one side is pasted along the other side edge, and the pressure-sensitive adhesive A portion of the flange 8 is exposed from each of the through holes 7 to the upper surface side of the flange 4.

In this configuration, the contents are put into the pack body 2 of the container 1, the lid 3 is bent at its hinge part 6 to cover the pack body 2, and the flange 5 of the lid 3 is
By pressing against the flange 4 of the pack body 2, the flange 5 of the lid body 3 connects the through hole 7 of the flange 4 to the pressure-sensitive adhesive 8 of the tape 9 attached to the lower surface of the flange 4 of the pack body 2. Since the container 1 is adhered as shown in FIG. 4 within the container 1, the container 1 can be sealed without using staples or heat sealing as in conventional methods.

To open the container 1 sealed in this way,
Either remove the adhesion of the flange 5 from the pressure sensitive adhesive 8 of the tape 9 by pulling the flanges 4.5 apart from each other, or remove the tape 9 from the flange 4 by flipping up one end of the tape 9 and pulling it. All you have to do is peel it off, and in this case, there is no momentum when the stapled or heat-sealed parts break like in the past.
This allows the container to be opened without tipping over.

In this case, in order to facilitate the peeling of the tape 9 from the flange 4, one or both ends in the longitudinal direction of the tape 9 should protrude from the outer end of the flange 4 as shown in the drawings of the embodiment. This protrusion can be used as a grip piece 1O210 when peeling the tape 9 from the flange 4.
However, the said knob piece 10.10 in the embodiment is the tape 9.
By folding back a part of the pressure-sensitive adhesive 8, it is possible to prevent the pressure-sensitive adhesive 8 from adhering to other objects or to prevent dust from adhering to the pressure-sensitive adhesive 8).

In this way, in this embodiment, by pressing a flange without a through hole or notch hole and a tape against a flange having a through hole or notch hole and a tape, the flange is exposed inside the through hole or notch hole. Since both flanges can be bonded together using the pressure-sensitive adhesive of the tape, there is no need to use conventional means such as sealing or heat sealing when sealing the container.
It can be sealed quickly and easily with one touch, and it is only necessary to provide through holes or notches at appropriate intervals in both flanges, and the reduction in the strength of the flanges has nothing to do with the ease of opening. In addition, the durability of the punch for making the through hole or notch hole is much higher than that of the cutter for making the perforation-like cut line, and the punch has a perforation-like cut line. It has advantages such as not requiring strict maintenance as required for cutlery for cutting lines.

Moreover, when opening the package, all you have to do is pull the flanges apart from each other to remove the adhesive inside the through hole or notch, or peel the tape from the flange.
Since there is no force when the stapled or heat-sealed parts break like in the past, the container can be opened safely and easily without tipping over.

Furthermore, the present invention allows one or both ends of the tape to protrude outward from the flange, folds the protruding end so that the pressure-sensitive adhesive is not exposed, and pinches the tape with fingers when peeling it off. Since the tape is used as a pick piece, the strength of the pick piece is strong, and the pressure-sensitive adhesive is not exposed to the outside, so there is no chance of accidental attachment to other containers or accidental peeling of the tape. be.

In addition, the present invention is directed to an egg carton container 1 as shown in FIG.
Needless to say, the same applies to 1.
Further, the through hole 7 and the tape 9 may be provided in the flange 5 of the lid body 3, or the through hole 7 may be replaced with a cutout hole 12 as shown in FIG. A releasable mold release tape 13 may be attached to the flange having the hole or notch and the tape as shown by the two-dot chain line in FIG. 3, and the mold release tape may be turned over and used.

As another example, as shown in FIG. 6, the width of the flange 4 on the side to which the tape 9 is attached is made narrower by an appropriate dimension (L) than the width of the other flange 5. A portion of the pressure sensitive adhesive 8 on the tape 9 may also be exposed on the other flange 5 side.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; FIG. 1 is a perspective view of the container when it is opened, FIG. 2 is a perspective view of the container that is sealed, and FIG. 4 is an enlarged sectional view of It/-IV in FIG. 2, FIG. 5 is a perspective view when applied to an egg pack container, and FIG. 6 is an enlarged sectional view of another embodiment. ■, 11...Container, 2...Pack body, 3...
... Lid body, 4.5 ... Flange, 6 ... Hinge part, 7.12 ... Through hole or notch hole, 8 ... Pressure-sensitive adhesive, 9 ... Tape, 10.10... picking piece.

Claims (1)

[Claims] (1) For packaging in which a flanged lid for the pack body is integrally connected to one side edge of the flanged pack body formed of a thin synthetic resin sheet via a bendable hinge. In the container, a tape having a pressure-sensitive adhesive on one side is attached to one of the flange of the pack body and the flange of the lid body, and the other side edge opposite to and substantially parallel to the hinge part. along the
A pressure-sensitive adhesive of the tape is attached to the other flange side, and one or both longitudinal ends of the tape extending along the other side edge are made to protrude beyond the flange, and the end A packaging container comprising a tab piece formed by folding the pressure sensitive adhesive so that the pressure sensitive adhesive is not exposed.