JPH072425Y2 - Metal / plastic composite container - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is to integrally form a plastic frame body on the opening side peripheral portion of at least one of the main body and the lid body of a metal container, and to form a portion of the frame body. The present invention relates to a metal / plastic composite container in which the container is sealed and opened.

[Prior Art] A metal can representing a metal container is a container excellent in mechanical strength, gas barrier property, and the like, and a hermetically sealed can that is hermetically sealed by winding or soldering, a fitting lid, a screwing lid, and the like. It is roughly divided into open cans that can be sealed.

[Problems to be solved by the invention] However, the former sealed canister requires a separate opening device such as a can opener, and it cannot be simply opened anytime and anywhere.

Some products, such as pull-top cans, that can be easily opened have been proposed, but those that have a small opening or cannot be resealed once opened and require a separate plastic lid. There were many

On the other hand, in the latter open can, after the lid body is fitted or screwed into the container body, the portion must be fixed from the outside with an adhesive tape or the like, and the workability is poor.

An object of the present invention is to provide a metal / plastic composite container which can be easily sealed and opened, and can be resealed while maintaining its function as a metal can such as mechanical strength and gas barrier property. is there.

[Means for Solving the Problems] In order to solve the above problems, the metal / plastic composite container according to the present invention has a fitting portion on the opening side peripheral portion of the metal container body and the metal container lid. Frames made of plastic are integrally molded, and the container body and the container lid are sealed by fitting the fitting portions of the respective frame bodies, and the frame is the outer side of the frame bodies. The thin-walled portion formed on the body is cut to remove the fitting portion of the frame body on the outer side to open the body.

Further, the metal / plastic composite container according to the present invention is formed by integrally molding a plastic frame body having a fitting portion at a peripheral edge portion on one opening side of the metal container body or the metal container lid. The fitting portion of the body is sealed by fitting the fitting portion formed on the opening side peripheral portion of the other side of the container lid or the container body, and the thin portion formed on the frame body is cut. Then, the opening may be opened by removing the fitting portion of the frame.

Embodiment Hereinafter, the present invention will be described in detail with reference to the drawings and the like.

1 to 3 are views showing an embodiment of a metal / plastic composite container according to the present invention. FIG. 1 is a front view showing a main portion partially broken, and FIG. 2 is the same. A side sectional view and FIG. 3 are overall views.

The container body 1 and the container lid 2 are formed by plastically working a metal plate, and can be applied to various shapes such as a round can, a square can, and a squeezed can.

Examples of the metal plate used for the container body 1 and the container lid 2 include a tin plate having a thickness of 100 to 500 μm, TFS (Tin Free Steel), aluminum, and stainless steel.

The container body 1 and the container lid 2 are formed with drop-off preventing portions 1a and 2a at the peripheral edge portions on the opening side. The caps 1a and 2a are attached to the metal container body 1 and the container lid body 2 and to the plastic frame body.
It is intended to ensure that 3 and 4 are joined, and can be formed with holes or recesses or protrusions with a diameter of about 1 to 5 mm. These holes can be made into a cone shape or fine irregularities on the inner wall etc. May be provided.

Insert the container body 1 and the container lid 2 into the injection molding machine,
Plastic is injected to the peripheral portions of the container body 1 and the container lid 2 on the opening side to form the frames 3 and 4.

At this time, the metal container body 1 and the container lid 2 are prevented from falling off.
Part of the plastic frame body 3, 4 enters the 1a, 2a,
The frame bodies 3 and 4 never come off.

Examples of plastics used to form the frames 3 and 4 include polypropylene, polyethylene, acrylonitrile butadiene styrene copolymer (ABS), polystyrene, and polyester.

The frame 3 on the main body side is formed with a convex portion 3a having high peaks and a sharp convex portion 3b having low peaks, and the frame body 4 on the lid side is fitted to these convex portions 3a, 3b. Recesses 4a and 4b are formed.

Two thin portions 4c are formed between the concave portions 4a and 4b of the frame body 4. By pulling and cutting the band-shaped portion 4d sandwiched between the thin portions 4c, the thin body portion 4c is removed from the frame body 3. The container can be opened by separating the frame body 4.

Since the metal / plastic composite container according to the present invention is configured as described above, the container body 1 and the container lid 2 are the convex portions 3a and 3b of the body-side frame body 3 and the lid-side frame body 4. By pressurizing and fitting the concave portions 4a and 4b of the above, it is possible to seal in an airtight state.

At the time of opening, by pulling the tab 4e provided at one end of the band-shaped portion 4d, the thin-walled portion 4c is incised, and the band-shaped portion 4d and the portion on the opening side thereof are removed. The container lid 2 can be removed.

After unsealing, the protrusion 3b of the frame 3 on the main body side is attached to the frame 4 on the lid side.
Since the concave portion 4b can be lightly fitted, it can be resealed while maintaining airtightness.

The metal / plastic composite container as in this embodiment can be suitably used as a container for foods that do not like moisture and which cannot be used all at once, for example, seaweed, oysters, cookies, tea and bonito flakes.

4 to 6 are sectional views showing a main part of another embodiment of the metal / plastic composite container according to the present invention.

In the embodiment shown in FIG. 4, a plastic frame 7 is integrally formed on the peripheral edge of the metal container body 5 on the opening side.

The frame 7 includes a large-diameter cylindrical portion 7a, a convex portion 7b provided on the upper end of the large-diameter cylindrical portion 7a for fitting, and a step portion 7c horizontally provided inside the convex portion 7b. A shape having a small-diameter cylindrical portion 7d bent vertically from the step portion 7c and the like.

A through hole 5a is provided in the peripheral edge portion of the container body 5 on the opening side to prevent the container body 5 from falling off. When the frame body 7 is injection-molded in the container body 5, a part of the resin is left inside the through hole. The head portion 7e is formed by wrapping around to prevent the frame body 7 from falling off.

In addition, the metal lid 6 has a roll-shaped portion 6a formed on the peripheral edge of the opening side to prevent it from being bent and bent outward, and a plastic frame 8 is provided near the roll-shaped portion 6a. It is integrally molded.

The frame 8 includes a body portion 8a and a winding portion provided outside the body portion 8a.
8b, a skirt portion 8c continuously provided under the winding portion 8b, and a thin wall portion 8d provided at a boundary between the winding portion 8b and the skirt portion 8c.
And a protrusion for fitting provided on the inside of the skirt 8c.
It has a shape such as 8e.

The container main body 5 and the container lid body 6 can be hermetically sealed by the convex portion 7 b of the frame body 7 being fitted over the convex portion 8 e of the frame body 8 so as to be fitted.

When the thin portion 8d of the frame body 8 is cut and the skirt portion 8c is removed, the convex portion 7b and the convex portion 8e are disengaged from each other.
Can be removed and opened.

After opening, the outside of the small-diameter cylindrical portion 7d of the frame body 7 and the inside of the body portion 8a of the frame body 8 can be fitted to each other to maintain airtightness, so that resealing can be performed.

In the embodiment shown in FIG. 5, a plastic frame 11 is integrally formed on the opening side peripheral edge of the metal container body 9.

The container body 9 has a convex portion 9a directed to the outside at the peripheral portion on the opening side.
And a stepped portion 9b horizontally connected to the upper side of the convex portion 9a, and a stepped portion 9b.
It has a shape having a small-diameter cylindrical portion 9c bent and bent perpendicularly to, and a protruding portion 9d provided in the middle of the small-diameter cylindrical portion 9c toward the outside to prevent falling.

The frame body 11 includes a small-diameter tubular portion 11a, a brim portion 11b connected to the small-diameter tubular portion 11a, a thin-walled portion 11c provided at a boundary between the small-diameter tubular portion 11a and the brim portion 11b, and a brim. A fitting recess formed by a large-diameter tubular portion 11d provided outside the portion 11b, a space between the large-diameter tubular portion 11d and the small-diameter tubular portion 11a, and a convex portion 11e at the upper end of the large-diameter tubular portion 11d.
It has a shape such as 11f. The frame 11 is integrally formed on the upper side of the stepped portion 9b of the container body and the outer side of the small-diameter cylindrical portion 9c.

A roll-shaped portion 10a bent and bent outward is formed on the peripheral edge of the opening side of the metal container lid 10.

By fitting the roll-shaped portion 10a of the container lid 10 into the fitting recess 11f of the frame 11, the container body 9 and the container lid 10 can be sealed.

When the thin-walled portion 11c of the frame 11 is cut and the large-diameter tubular portion 11d is removed, the roll-shaped portion 10a and the fitting recess 11f are disengaged, so the container lid 10 can be removed and opened. You can

After opening, the outside of the small-diameter tubular portion 11a of the frame 11 and the container lid 1
Since the airtightness can be maintained by fitting with the inner surface of the opening side of 0, resealing can be performed.

In the embodiment shown in FIG. 6, a plastic frame 14 is integrally formed on the opening side peripheral edge of the metal container body 12.

The container body 12 has a convex portion 12a directed to the outside on the peripheral portion on the opening side.
And a step portion 12b horizontally connected to the upper side of the convex portion 12a, and a step portion
It has a shape having a small-diameter cylindrical portion 12c bent and raised perpendicularly to 12b.

The frame body 14 includes a small-diameter tubular portion 14a, a collar portion 14b that is continuously provided to the small-diameter tubular portion 14a, a skirt portion 14c that is continuously provided below the other end of the collar portion 14b, and an upper end of the other end of the collar portion 14b. 14d lined up in
And a thin-walled portion 14e for cutting provided at the boundary between the collar portion 14b and the crown portion 14g, the space between the small diameter tubular portion 14a and the crown portion 14d, and the protrusion 14f on the inner side of the crown portion 14d. It has a shape having a concave portion 14g and the like.

The frame body 14 includes a convex portion 12a, a step portion 12b, and a small diameter cylindrical portion 12c of the container body 12.
Is integrally molded on the entire outer circumference. In this example,
As shown in FIG. 6B, a film 15 such as PP (polypropylene) is attached to the outside of the container body 12 in advance, and a PP resin is further injection-molded on the upper side of the film 15 to form the frame body 14. It is molded integrally. In this way, since the film 15 and the frame body 14 are fused, the frame body 14 can be prevented from falling off. In addition, instead of attaching the film 15,
You may make it apply a primer.

A roll-shaped portion 13a is formed on the opening-side peripheral edge portion of the metal container lid 13 so as to be bent and bent outward.

By fitting the roll-shaped portion 13a of the container lid 13 into the fitting recess 14g of the frame body 14, the container body 12 and the container lid 13 can be sealed.

When the thin portion 14e of the frame body 14 is cut and the crown portion 14d is removed,
Since the fitting between the roll-shaped portion 13a and the fitting recess 14g is released,
The container lid 13 can be removed to open the container.

After opening, the outside of the small-diameter cylindrical portion 14a of the frame body 14 and the container lid 1
Since it can be fitted with the inner surface of the opening 3 to keep airtightness, resealing can be performed.

The present invention is not limited to the embodiment described above, and various modifications can be made.

For example, when the frame body is integrally formed on one side of the container body and the container lid, it may be provided on either side of the body and the lid side. When the frame bodies are provided on both sides, the frame bodies can be molded by using plastics having different properties such as hardness to improve the sealing property at the time of fitting.

Also in the embodiment shown in FIGS. 4 to 6, a small convex portion or a concave portion may be provided to be lightly fitted in the case of resealing.

The shapes of the above-described embodiments may be combined with or replaced with other embodiments as long as there is no contradiction in nature.

[Effects of the Invention] As described above, according to the present invention, since the plastic frame is formed on at least one side of the opening side peripheral edge of the container body or the lid, the plastic frame is sealed by the frame. It can be easily stopped and opened, and can be resealed between plastic frames.

Therefore, a container which has the function of a metal can and can be easily sealed, opened, or resealed was realized.

[Brief description of drawings]

1 to 3 are views showing an embodiment of a metal / plastic composite container according to the present invention. FIG. 1 is a front view showing a main portion partially broken, and FIG. 2 is the same. A side sectional view and FIG. 3 are overall views. 4 to 6 are sectional views showing a main part of another embodiment of the metal / plastic composite container according to the present invention. 1,5,9,12 …… Container body 2,6,10,13 …… Container lid 3,4,7,8,11,14 …… Frame

Claims (2)

[Scope of utility model registration request] 1. A container body made of metal and a frame body made of plastic having a fitting portion at a peripheral edge portion of an opening side of the container lid body made of metal are integrally molded, and the container body and the container lid body are formed. The fitting portion of each frame is sealed by fitting, and the thin portion formed on the outer frame of the frame is cut to remove the fitting portion of the outer frame. A metal / plastic composite container configured to be opened by doing so. 2. A plastic frame body having a fitting portion on the opening side peripheral portion of one side of the metal container body or the metal container lid body is integrally molded, and the fitting portion of the frame body and the The container lid body or the fitting portion formed on the opening side peripheral portion on the other side of the container body is sealed by fitting, and the thin portion formed on the frame body is cut to fit the frame body. A metal / plastic composite container configured to be opened by removing the joint.