JPH11240545A - Concave cover material of cup-shaped container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain good stacking properties by a method wherein in the case that concave cover materials of a cup-shaped container are stacked, even if the bottom surface of a cover material to be stacked on top of a lower side cover material makes contact with a pull-ring of the lower side cover material, each of cover materials to be stacked can be held nearly horizontally so as not to be inclined so that the materials, when stacked, can be prevented from falling down. SOLUTION: There are provided an annular flange outer plate 4 made of a plastic which is releasably joined and molded, by injection, to the outer surface of a film-shaped side surface 1, from the top end to a flange part thereof, a cover opening pull-ring 7 made of a plastic which is joined and molded to the inner surface of the side surface 1, by injection, so as not to be peeled off in such a manner that the pull-ring extends toward the middle of a cover material A, and an elevated part or a rib 8 for flat stacking which is provided by elevating a bottom surface 2 at a location in opposition to the forward end of the ring 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concave lid for a cup-shaped container made of plastic or paper, or a concave lid for a paper-made cup reinforced with a plastic aggregate. .

[0002]

2. Description of the Related Art As shown in a plan view of FIG. 6A, a concave cup-shaped lid member of a conventional cup-shaped container has a side portion 1 and a bottom portion 2.
And a flange portion 3 provided at the upper end of the side surface portion 1 to form a cover material A having a concave shape as a whole, and an opening formed by joining and joining a part of the inner surface of the side surface portion 1 by an insert injection method. A lid pull ring 7 is provided.

The side surface portion 1, the bottom surface portion 2 and the flange portion 3 at the upper end of the side surface portion 1 are formed into a concave shape by using a synthetic resin film (or a synthetic resin sheet), paper, aluminum foil, or a composite material thereof. The flange 3
A ring-shaped flange outer plate 4 made of a thermoplastic plastic for covering the opening of the cup-shaped container in a sealed state by heat fusion is formed on the entire outer surface of the container so as to be peelable by an insert injection method. .

[0006] As shown in the side sectional view of FIG. 6 (c), the concave cover material A is formed by a side portion 11, a bottom portion 12, and a side portion 1.
1 over the opening of the cup-shaped container B provided with a flange 13 formed on the entire periphery of the opening at the upper end of the flange outer plate 4 of the concave lid material A and the inner surface of the flange 13. The formed heat-fusible resin material is overlapped and heated and pressurized to be fused, whereby the lid is sealed.

[0005]

FIG. 6 (b)
FIG. 1 is a side view of a conventional concave lid material A, which shows a state in which two or more lid materials A of the same shape are stacked and stacked, but inside the concave shape of the concave lid material A; Is provided with a pull ring 7, and the tip of the pull ring 7 passes from a part of the inner surface of the side portion 1 toward the opposite side plate 1 before the central portion of the concave shape, or passes through the central portion of the concave portion. It has been extended halfway.

For this reason, when the lid members A having the same shape are stacked as shown in FIG. 6B, the bottom of the lid member A which is superimposed on the pull ring 7 of the lower lid member A has There is a problem in that the stacking properties are poor such that the lid materials A that are in contact with each other and are stacked do not become horizontal and tilt or fall down when stacked.

[0007] An object of the present invention is to provide a lid material that is stacked even when the bottom surface of the lid material stacked on the upper side abuts on the pull ring 7 of the lower lid material when stacking lid materials of the same shape. The object is to maintain a state close to horizontal so that good stacking properties can be obtained without tilting or falling down when stacked.

[0008]

Means for Solving the Problems A first invention of the present invention is:
In a concave lid material A of a cup-shaped container provided with a film-shaped side portion 1, a bottom portion 2, and a flange portion 3 at an upper end portion of the side portion 1, the flange portion 3 is moved from the upper end portion of the film-shaped side portion 1 to the flange portion 3.
And a plastic ring-shaped flange outer plate 4 which is peelably bonded to the outer peripheral surface thereof, and which is non-peelably bonded near the lower end of the film side plate 1 and is formed at the center of the lid member A. A plastic open lid pull ring 7 extending toward the front end; and a flat stacking raised portion 5 provided by raising the bottom surface portion 2 at a position facing the distal end of the pull ring 7. It is a concave-shaped lid material of a cup-shaped container.

Next, a second aspect of the present invention is to provide a film-like side portion 1, bottom portion 2, and flange portion 3 at the upper end of the side portion 1.
A plastic ring-shaped flange outer plate 4 which is peelably bonded to the outer peripheral surface of the film-shaped side portion 1 from the upper end portion to the flange portion 3 of the cup-shaped container A provided with And a plastic open-pull pull ring 7 which is non-peelably bonded and formed near the lower end of the film-like side plate 1 and extends toward the center of the lid member A, and faces a tip end of the pull ring 7. A concave lid material for a cup-shaped container, comprising a flat stacking rib 8 provided at one or more positions.

The present invention also provides the concave lid of the cup-shaped container according to the second aspect of the present invention, wherein the upper end of the rib 8 is formed upward.

The present invention also relates to the concave lid of the cup-shaped container according to the second aspect of the present invention, wherein the upper end of the rib 8 is curved or bent in the horizontal direction. .

Further, in the present invention, in the concave lid material of the cup-shaped container according to the first invention or the second invention, the open pull ring 7 is peeled off along the inner peripheral surface at the lower end portion of the film side plate 1. This is a concave lid material of a cup-shaped container which is jointly molded via a ring-shaped inner plate 7c which is jointly molded.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The concave lid material of a cup-shaped container according to the first invention will be described in detail below according to an embodiment of the invention.

FIG. 1 (a) is a side sectional view of a recessed lid member of the cup-shaped container of the first invention, and FIG. 1 (b) is a plan view thereof. A flange portion 3 is provided at an upper end portion of the portion 1 to form a cover member A having a concave shape as a whole, and an opening of a cup-shaped container is heat-sealed around the entire outer peripheral surface of the flange portion 3. A ring-shaped flange outer plate 4 made of a thermoplastic plastic for covering in a hermetically sealed state is peelably joined and formed by an insert injection method.

A part of the inner peripheral surface at the lower end of the side surface portion 1 is provided with a plastic open-pull pull ring 7 joined and molded by an insert injection method.

Further, the entire periphery of the lower end portion inner peripheral surface of the side surface portion 1 below the ring-shaped flange outer plate 4 formed on the entire outer peripheral surface of the flange portion 3 by an insert injection method. A plastic ring-shaped inner plate 7c which is non-peelable and formed by joining is provided as necessary, and the lid pull ring 7 is joined and molded through the ring-shaped inner plate 7c.

The concave cover material A of the present invention is formed by molding a sealable single-layer film or a laminated and laminated multilayer film into a concave shape. The front surface of the cover material A is provided with a thermoplastic synthetic resin layer, and the back surface is provided with a synthetic resin layer (adhesive layer) having both thermal adhesion and easy peelability, and the single-layer film or the multilayer film is made of polyethylene. A synthetic resin film such as polypropylene, polyethylene terephthalate, or the like, a composite film of a synthetic resin film and paper, or a composite film of these films and an aluminum foil is used.

An example of the laminated sheet used for the cover material A is 50 μm of unstretched polypropylene / 200 μm of polypropylene sheet / 15 μm of ethylene-vinyl alcohol copolymer (gas barrier layer) in order from the upper surface (outer surface).
/ Laminated laminate of easy peel material 50 μm (easy peeling adhesive layer) or polypropylene 100
μm / paper base 230 g / m ² / polyvinylidene chloride coated undrawn nylon 30 μm / easy peel material 5
0 μm are laminated and laminated in this order.

The easy-peel material is a synthetic resin film having both thermal adhesiveness and easy peelability, and a suitable amount of polybutene resin in any one of polypropylene resin, polyethylene resin and polyethylene terephthalate resin. A thermoplastic synthetic resin film blended with (polybutene-1 of a monomer having 4 carbon atoms), which is an easy peel-off film that has both adhesive sealing properties (sealant properties) by hot melting and easy peelability that easily causes cohesive failure. Use a conductive film. Specifically, for example, CF9501A (manufactured by Toray Industries, Inc.) can be used.

A raised portion 6 is formed on the bottom portion 2 by narrowing the bottom portion 2 to a predetermined height at a position facing (or adjacent to) the tip of the lid pull ring 7.
The raised portion 6 is formed at a position facing (adjacent to) the distal end portion at a predetermined distance corresponding to the length of the lid pull ring 7. It is appropriate that the height of the raised portion 6 is at least lower than the upper surface of the flange portion 3.

For example, in the case where the tip of the pull ring 7 is formed from the center of the inside of the recessed portion of the cover material A to the front side, as shown in FIGS. It is appropriate to form the raised portion 6 at the center of the inside of the recessed portion of A, or to form the raised portion 6 closer to the side face on the side facing the tip of the pull ring 7 than the center. is there.

FIG. 1C shows a state in which two or more recessed cover members A of the first invention having the same shape are stacked and stacked, and the recessed cover members A of the first invention are stacked. A pull ring 7 is provided inside, but when the lid material A having the same shape is stacked, the pull ring 7 of the lower lid material A is stacked.
Even if the bottom surface portion 2 of the upper lid material A abuts on the tip of the upper lid material A, the upper lid material A overlapped on the raised portion 6 formed in the region of the lower lid material A where the pull ring 7 is not provided. The bottom part 2
It is supported from below by the raised portion 6, and it is avoided that only one side of the upper lid material A enters the recessed inside of the lower lid material A more deeply as compared with the case without the raised portion 6. Things.

Therefore, each of the stacked lid materials A
Can be stacked in a more horizontal state as compared with the case without the raised portion 6, and it is possible to eliminate a bad stacking property such as tilting or falling down when stacked.

In the present invention, the protruding portions 6 provided on the bottom surface portion 2 of the lid material A respectively have the upper ends of the pull rings 7 of the lower lid material A when the lid materials A are stacked. The cover material A may be formed over a region that allows a space (space) to enter from below into the space of the protruding portion 6 formed on the bottom surface portion 2 of the cover material A. The portion 6 may be raised up to the area of the bottom portion 2 corresponding to the lower side of the pull ring 7.

FIG. 2A is a side sectional view of a concave-shaped lid member of a cup-shaped container for explaining another embodiment of the first invention, and FIG.
(B) is a plan view thereof. For example, in a case where the tip of the pull ring 7 is formed to extend to a position past the central portion of the inside of the concave portion of the lid member A, the concave portion of the lid member A is formed. It is appropriate to form the raised portion 6 closer to the side surface portion 1 on the side facing the distal end portion of the pull ring 7 than the inner central portion.

FIG. 2C shows a state in which two or a plurality of recessed cover members A having the same shape according to the other embodiment of the first invention are stacked and stacked. A pull ring 7 is provided inside the recessed shape of the lid material A. When the lid material A having the same shape is stacked, the bottom portion of the upper lid material A is attached to the tip of the pull ring 7 of the lower lid material A. Even when the lower cover 2 abuts, the bottom portion 2 of the upper cover material A, which is superimposed on the raised portion 6 formed in the region of the lower cover material A where the pull ring 7 is not formed, is provided by the raised portion 6 from below. As a result, it is possible to prevent only one side of the upper lid member A from entering the recessed portion of the lower lid member A more deeply as compared with the case where the raised portion 6 is not supported.

Therefore, each of the stacked lid materials A
Can be stacked in a more horizontal state as compared with the case without the raised portion 6, and it is possible to eliminate a bad stacking property such as tilting or falling down when stacked.

In the present invention, the raised portions 6 provided on the bottom surface portion 2 of the lid member A are also provided with the pull ring 7 of the lower lid member A when the lid members A are stacked in the same manner as described above. An area of the bottom portion 2 corresponding to the lower side of the pull ring 7 so that the tip portion can provide a space (space) to enter from below into the space of the raised portion 6 formed on the bottom portion 2 of the upper cover material A. It may be raised to the maximum.

Next, the concave lid material of the cup-shaped container of the second invention will be described in detail below according to the embodiment of the invention.

FIG. 3 (a) is a side sectional view of the recessed lid member of the cup-shaped container according to the second invention, and FIG. 3 (b) is a plan view thereof, as shown in FIG. 3 (a). 1, a bottom part 2,
The flange portion 3 at the upper end portion of the side surface portion 1 is formed into a concave shape by using one synthetic resin film (or synthetic resin sheet), paper, aluminum foil, or a composite sheet material thereof, and A lid member A having a concave shape, and a part of the inner surface of the side surface portion 1 is provided with an open lid pull ring 7 joined and formed by insert injection.
It has.

A ring-shaped flange outer plate 4 made of thermoplastic plastic for covering the opening of the cup-shaped container in a hermetically sealed state by heat sealing is provided around the entire outer surface of the flange 3 by an insert injection method. It is bonded and molded so that it can be peeled off.

Further, the entire periphery of the inner peripheral surface of the side surface portion 1 below the ring-shaped flange outer plate 4 formed on the entire periphery of the outer peripheral surface of the flange portion 3 is peeled off by insert injection. A plastic ring-shaped inner plate 7c that is impossiblely bonded and molded is provided as necessary, and the open-pull pull ring 7 is bonded and molded through the ring-shaped inner plate 7c.

As shown in FIG. 3 (a), when the lid A is stacked on the bottom 2 in the second invention, the tip of the pull ring 7 of the lower lid A is attached to the upper lid A. As a space (space) to enter into the space of the bottom portion 2 from below, the bottom portion 2 corresponding to at least the lower side of the pull ring 7 or the lower portion of the pull ring 7 as shown in the drawing. The raised portion 6 is formed over almost the entire region of the bottom surface portion 2 including the region of FIG.

As shown in FIG. 3 (b), the inner peripheral surface of the side surface portion 1 in the second invention has a position 1 to 2 at a position directly facing the distal end portion of the pull ring 7 or at a position facing a predetermined angle. Ribs 8 for flat stacking are provided at more than one location. The rib 8 is provided so that its upper end is upward, at least lower than the flange 3, and higher than the height of the raised portion 6.

As another embodiment of the concave lid material of the cup-shaped container of the second invention, a side sectional view of the concave lid material of the cup-shaped container of FIG. 4 (a), FIG. 4 (b) As shown in the plan view of the concave lid material of the cup-shaped container and the sectional view taken along the line MM in FIG. 4C, the flat stacking ribs 8 are formed in a thin plate shape as a whole, and the lower end thereof is formed. A horizontal portion 8b which is bent or bent in the horizontal direction from the base portion 8a to the upper end portion. The horizontal portion 8b is provided at least lower than the flange portion 3 and higher than the raised height of the raised portion 6. Have been. The horizontal portion 8b is provided with elasticity from the base portion 8a to the horizontal portion 8b, has a buffering property against external pressure and impact force from above, and has a cup-shaped container after being covered with a concave lid material. Has a buffering function so that the film-shaped lid member A is not damaged or ruptured through the base portion 8a by the impact force applied to the rib 8 when the lid member is inverted or pressed from above the lid member. I have.

FIG. 5 (a) shows a state in which two or more recessed cover members A of the second invention having the same shape are stacked and stacked, and the recessed cover member A of the second invention is stacked. A pull ring 7 is provided inside, but when the lid material A having the same shape is stacked, the pull ring 7 of the lower lid material A is stacked.
Even when the lower surface of the raised portion 6 of the bottom surface portion 2 of the upper cover material A abuts against the front end portion of the upper cover material A, the bottom surface portion 2 of the upper cover material A that does not come into contact with the front end portion of the pull ring 7 , And it is possible to avoid that only one side of the upper lid member A penetrates deeper into the interior of the concave portion of the lower lid member A as compared with the case without the rib 8.

Therefore, each of the stacked lid materials A
Can be stacked in a more horizontal state as compared with the case without the ribs 8, and it is possible to solve the problem of poor stacking properties such as tilting or falling when stacked.

The concave cover material A of the second invention is shown in FIG.
As shown in FIG. 2B, a side surface portion 11, a bottom surface portion 12, and a flange portion 13 formed on the entire periphery of an opening at an upper end portion of the side surface portion 11.
Is placed over the opening of the cup-shaped container B provided with the above, and the flange outer plate 4 of the concave lid material A and the heat-fusible resin material formed on the inner surface of the flange portion 13 are overlapped and heated and pressed. It is attached and covered in a sealed state by fusing.

When the cup-shaped container B covered with the cover material A of the first or second invention of the present invention is opened, the pull ring 7 non-peelably bonded to the side surface portion 1 is opened.
By pulling the film-shaped side portion 1 and the bottom surface portion 2 upward while pulling upward, the film-shaped flange portion 3 and the flange portion 13 of the cup-shaped container B, which are releasably joined to each other, are pulled. The lid material A is opened by peeling off the fused flange outer plate 4.

[0040]

The concave lid material of the cup-shaped container of the present invention comprises:
Even when stacking up and down, even if the bottom of the upper lid material abuts against the pull ring of the lower lid material, each of the stacked lid materials can be held in a nearly horizontal state even if the bottom part of the upper lid material abuts and tilts. Therefore, there is an effect that a good stacking property can be obtained without falling down when stacked.

[Brief description of the drawings]

1 (a) is a side sectional view showing an embodiment of a concave lid material according to the first invention, FIG. 1 (b) is a plan view thereof, and FIG.
FIG. 3 is a side cross-sectional view illustrating a state in which the concave cover members of the first invention are stacked.

FIG. 2 (a) is a side sectional view of a recessed lid material according to another embodiment of the first invention, FIG. 2 (b) is a plan view thereof, and FIG.
FIG. 3 is a side sectional view illustrating a state in which the recessed cover material of the first invention is stacked.

FIG. 3 (a) is a side sectional view of a concave lid material according to an embodiment of the second invention, and FIG. 3 (b) is a plan view thereof.

FIG. 4 (a) is a side sectional view of a recessed lid member according to another embodiment of the second invention, FIG. 4 (b) is a plan view thereof, and FIG.
Is a partial sectional side view thereof.

FIG. 5 (a) is a side sectional view illustrating a state in which the concave lid material according to the second invention is stacked, and FIG. 5 (b) is a diagram illustrating a state where the concave lid material according to the second invention is covered on a cup-shaped container. FIG.

FIG. 6A is a plan view of a conventional concave lid material, and FIG.
FIG. 2 is a side cross-sectional view illustrating a state in which a conventional concave lid is stacked, and FIG. 3C is a side cross-sectional view illustrating a state in which the conventional concave lid is covered on a cup-shaped container.

[Explanation of symbols]

A: Recessed cover material B: Cup-shaped container 1 ... Side surface portion 2 ... Bottom portion 3 ... Flange portion 4 ... Ring-shaped flange outer plate 5 ... Lower bottom surface portion 6 ... Raised portion 7 ... Opening pull ring 7
a ... finger hole 7b ... pull ring joint 7c ... ring-shaped inner plate 8 ... rib for horizontal stacking 8a ... base 8b ... horizontal part 11 ... side part (body part) of cup-shaped container 12 ... bottom part
13 ... Flange part

Claims (5)

[Claims] 1. A concave lid material A for a cup-shaped container having a film-shaped side part 1, a bottom part 2, and a flange part 3 at the upper end of the side part 1, from the upper end of the film-shaped side part 1. A plastic ring-shaped flange outer plate 4 which is peelably bonded to the outer peripheral surface of the flange portion 3 and a cover material A which is non-peelably bonded and formed near the lower end portion of the film side plate 1. And a plastic opening pull ring 7 extending toward the center of the pull ring, and a flat stacking protrusion 5 provided by raising the bottom surface 2 at a position facing the tip of the pull ring 7. A concave-shaped lid material for a cup-shaped container, characterized in that: 2. In a recessed lid A of a cup-shaped container provided with a film-shaped side part 1, a bottom part 2, and a flange part 3 at the upper end of the side part 1, the upper part of the film-shaped side part 1 A plastic ring-shaped flange outer plate 4 which is peelably bonded to the outer peripheral surface of the flange portion 3 and a cover material A which is non-peelably bonded and formed near the lower end portion of the film side plate 1. A plastic open-pull pull ring 7 extending toward the center of the pull ring, and flat stacking ribs 8 provided at one or more positions at positions opposite to the tip of the pull ring 7. Cup-shaped lid material for a cup-shaped container. 3. The recessed lid of a cup-shaped container according to claim 2, wherein the upper end of the rib 8 is formed upward. 4. The recessed lid of a cup-shaped container according to claim 2, wherein an upper end of said rib 8 is curved or bent in a horizontal direction. 5. The open-pull ring 7 is formed by joining a non-peelable ring-shaped inner plate 7c along the inner peripheral surface of the lower end of the film-shaped side plate 1.
The concave lid material of the cup-shaped container according to claim 4.