JP4314646B2 - Wide palate with pull ring - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wide palate with a pull ring to be attached to a cup-shaped composite container used for fruit juice drinks, sake, fruit, granular confectionery and the like.
[0002]
[Prior art]
Conventionally, a cup-shaped composite container has been used in a wide field of use of food contents, and a wide-mouthed lid with a pull ring has been used for this cup-shaped composite container depending on the purpose of use of the container. The wide-mouthed lid with a pull ring is, for example, an outer ring and an inner ring with a pull ring that are integrally formed on a seat lid by an insert injection molding method. The container is obtained by thermally fusing the lower surface of the outer ring to the mouth of a composite container. The container was sealed and, in use, the pull ring of the inner peripheral ring was pulled with a finger, the sheet lid was peeled off from the outer peripheral ring, and the container was opened.
[0003]
[Problems to be solved by the invention]
However, in the case where the contents are particularly liquid contents, the above-described conventional wide mouth cover with a pull ring has a seat cover from the outer ring that is heat-sealed to the mouth of the container when the pull ring is fully opened by pulling with a finger. The contents may spill out of the container due to vibration generated by the resistance to peel off. In addition, there was a thing that the finger contact was bad due to the edge of the pull ring, and the sheet lid was adhered to the outer ring in a round shape, so that it was difficult to peel off and the unsealing property was poor.
[0004]
The present invention solves the above-mentioned conventional problems, and provides a wide-mouthed lid with a pull ring that has no risk of the contents spilling from the container at the time of opening, has good openability, and has a good shape. .
[0005]
[Means for Solving the Problems]
That is, according to the first aspect of the present invention, the seat lid is inserted into the injection mold in advance, and as shown in FIGS. 1 (a) and 1 (b) , the outer ring (100 ) is located above the peripheral wall of the seat lid. ) Is a wide-mouthed lid formed integrally with the seat lid while the inner circumferential ring (200) is injection-molded below the circumferential wall, and the inner circumferential upper edge of the outer circumferential ring (100) and the seat lid (300) A support column which is injection-molded so as to be peelable and openable from the outer peripheral upper edge of the peripheral wall (311), and is provided with a pull ring (210) having a wide finger pad at the tip on the upper end surface of the inner peripheral ring (200). (211) is erected, the post (211) a pair of reversal notch reversing the inner peripheral ring (200) on the inner periphery of the inner peripheral ring (200) of predetermined positions corresponding to both sides of (220) There is formed, the outer peripheral edge portion of the peripheral wall of the seat lid Formed in supermarkets shape, the outer peripheral edge portion of the pull ring side of the seat cover is pull ring with wide palate, characterized in that it is cut inside parallel to the tangent.
[0006]
According to a second aspect of the present invention, the gate position (G) of the injection mold is moved from the inner peripheral upper edge of the outer peripheral ring (100) to the sheet as shown in FIG. 1 (c). Openability is improved by removing the lid (300) from the final position on the opposite side of the support column (211) provided with the pull ring when opening the lid (300) and separating from the seat lid. The wide palate with a pull ring according to claim 1, wherein
[0007]
[Action]
The wide mouth cover with a pull ring of the present invention has a notch for reversal formed at the inner peripheral edge of the inner ring at a predetermined position on both sides of the column of the pull ring. When the sheet lid is peeled off from the outer peripheral ring and the container is opened, the peeled sheet lid is reversed in the middle of opening, so that the opening continues once the opening is stopped. As a result, the vibration generated by the resistance to peel off the sheet lid is softened, and the contents are not spilled from the container when opened.
[0008]
In addition, since a wide finger pad is formed on the pull ring, it is easy to pull the finger tightly against the pull ring, and the outer peripheral edge on the pull ring side of the seat lid is cut inward parallel to the tangent line. The adhesive area of the sheet lid that adheres to the outer ring at the opening start portion is small and easy to peel off, does not require a strong opening force at the start of opening, and the outer ring that is heat-sealed to the mouth of the container Since the outer peripheral edge is bonded in a tapered shape, it is easy to peel off and the opening ability is good.
[0009]
And since the gate position of the injection mold is removed from the final position when the sheet lid is peeled off from the outer ring and opened, and at a position away from the sheet lid, the gate position at the time of manufacture is The lid with a pull ring has a good shape without being damaged by the heat and pressure of the injected molten resin.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG.1 (b), the wide-mouthed lid with pull ring (10) of the present invention is attached to the mouth of the cup-shaped composite container (20) by heat fusion using an ultrasonic sealing method or the like. The sheet lid (300) is inserted in advance into the injection mold, and the upper outer ring (100) and the lower inner ring (200) are injection-molded with a thermoplastic resin such as polyethylene or polypropylene and the sheet. It is molded integrally with the lid.
[0011]
As shown in FIGS. 1A to 1C, the inner ring (200) described above has a column (211) provided with a pull ring (210) having a wide finger pad (212) at the tip on the upper end surface. ) And a pair of reversing notches (220) are formed on the inner peripheral edge portions at predetermined positions on both sides of the support column. The pair of notches (220) provided on the inner peripheral edge of the inner ring (200) causes the sheet lid to be peeled off when opening as shown in FIG.
[0012]
Further, as shown in FIG. 4B, the seat lid (300) has a tapered outer peripheral edge (311) of the peripheral wall (310), and also shown in FIGS. 1 (a) and 4 (c). In this way, the outer peripheral edge (311) on the pull ring side is cut (312) on the inner side parallel to the tangent.
[0013]
For example, as shown in FIGS. 4 (a) and 4 (c), the above-described seat lid (300) includes a peripheral wall (310) and a top plate (320). In addition, a recess is formed upward. In this recess, a reinforcing recess (321) may be formed as necessary. Further, the sheet lid is produced by molding the sheet by a vacuum forming method or a pressure forming method, and the sheet may be a single layer or a multilayer, but usually a multilayer sheet having barrier properties is used, The multilayer sheet is composed of, for example, a polyethylene / polyvinylidene chloride / polyethylene composition having a barrier layer as an intermediate layer, a polyethylene / ethylene-vinyl alcohol copolymer / polyethylene composition, a polypropylene / polyvinylidene chloride / polypropylene composition, and a polypropylene / ethylene composition. -Vinyl alcohol copolymer / polypropylene composition, polypropylene / nylon / polyvinylidene chloride / polypropylene composition, polypropylene / nylon / ethylene-vinyl alcohol copolymer / polypropylene composition, etc. In addition, the material of the surface which adhere | attaches with the outer periphery ring of a seat cover and an inner periphery ring is a material which heat-seal | fuses when an outer periphery ring and an inner periphery ring are injection-molded.
[0014]
The gate position (G) of the injection mold is removed from the final position when the sheet lid is peeled off from the outer ring and opened as shown in FIG. 1 (c), and as shown in FIG. And provided at a position away from the seat lid (300).
[0015]
【The invention's effect】
The container equipped with the wide mouth lid with pull ring of the present invention peels off the sheet lid because it pulls the pull ring with a finger and peels off the sheet lid to open the container. The vibration generated by the resisting resistance is reduced, and the contents are not spilled from the container when opened.
[0016]
In addition, the wide mouth lid with pull ring of the present invention has a wide pull ring finger pad, and it is easy to pull the pull ring firmly with a finger. Sometimes, the sheet lid is easily peeled off and opened, and the outer peripheral edge of the sheet lid is bonded to the outer ring in a tapered shape, so that the sheet lid is easily peeled off from the outer ring and the opening ability is good.
[0017]
In addition, the gate position of the injection mold is removed from the final position where the sheet lid is peeled off and away from the sheet lid. It is a lid with a good pull ring.
[Brief description of the drawings]
FIG. 1A is a plan view of a wide mouth cover with a pull ring according to an embodiment of the present invention, and FIG. 1B is an explanatory view showing a structure when the wide mouth cover with a pull ring is attached to the mouth of a composite container. It is a figure and (c) is a bottom view of an outer periphery ring and an inner periphery ring.
FIG. 2 is an explanatory diagram showing a state where an inner ring is reversed.
FIG. 3 is an explanatory diagram showing a gate position.
4A is a cross-sectional view of a seat lid according to an embodiment, FIG. 4B is an enlarged cross-sectional view of a portion A, and FIG. 4C is a bottom view.
[Explanation of symbols]
10 …… Wide-mouthed lid 20 with pull ring …… Composite container 100 …… Outer ring 101 …… Heat fusion projection 200 …… Inner ring 210 …… Pull ring 211 …… Staff 212 …… Finger rest plate 220 …… Notch 230… ... Reinforcing ring 300 ... Seat cover 310 ... Peripheral wall 311 ... Outer peripheral edge 312 ... Cut 320 ... Top plate 321 ... Reinforcing recess

Claims (2)

A wide lid that is inserted into the mold for injection molding in advance , an outer ring on the upper peripheral wall of the seat lid, an inner ring on the lower peripheral wall, and integrally molded with the seat cover, A pull ring that is injection-molded so as to be peelable and openable between the inner peripheral upper edge of the outer peripheral ring and the outer peripheral outer peripheral edge of the sheet lid, and has a wide finger pad at the tip on the upper end surface of the inner peripheral ring. A provided support column is erected , and a pair of reversing notches for reversing the inner ring is formed on the inner periphery of the inner ring at predetermined positions corresponding to both sides of the support column, and the outer periphery of the peripheral wall of the seat lid parts are formed in a tapered shape, the pull ring with wide palate outer peripheral edge portion of the pull ring side of the seat cover is characterized in that it is cut inside parallel to the tangent. The gate position of the injection mold is removed from the final position on the side opposite to the column provided with the pull ring when the sheet lid is peeled off and opened from the inner peripheral upper edge of the outer ring, and 2. The wide-mouthed lid with pull ring according to claim 1, wherein opening performance is improved by being provided at a position separated from the sheet lid.

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