JPH0619458Y2 - Simple opening container lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a container lid having a structure in which a tear-friendly thin film sheet is provided in the opening of a ring-shaped member attached to the container opening, and the sheet is torn to remove and open the sheet. In particular, it relates to improvement of a simple opening container lid suitable for an inner lid of a milk powder can.

(Prior Art) As this kind of container lid, one having a structure as disclosed in Japanese Utility Model Laid-Open No. 59-32667 is known.

This configuration is shown in FIG. 4, and is used to cover the opening of a ring-shaped member A made of a metallic material to be attached to the opening of the container with a thin film sheet B containing a metal foil, and to tear the sheet B to open it. As means, a plurality of annular strips C,
D and E are arranged concentrically and are bonded to the sheet B,
The grips F, G, and H are provided at the starting ends of the strips C, D, and E, respectively.

When opening this, the belt-like piece C is pulled by the grip portion F of the innermost belt-like piece C, and the sheet B is torn along the belt-like piece C and opened. Similarly, the sheet B is torn by each of the strips D and E to enlarge the opening area.

In such a configuration, since the strips C, D, E are adhered to each other with a gap therebetween, the strips C, D, E,
When the sheet B is torn by E, the position where the sheet is torn in the gap may vary depending on the lifting direction of the strip, and may not necessarily be torn along the inner edge of the outer strip.

In particular, when the strip-shaped piece E is provided with a straight cutting edge E'used for cutting off the powder contained in the container, the tearing of the sheet B proceeds toward the sliding cutting edge E '. If the sheet does not advance toward the starting end position of the slidable cutting edge E ′ when the sheet is cut, tearing is not performed along the slidable cutting edge E ′, and the uncut portion of the sheet B is generated at the slidable cutting edge E ′. There is a disadvantage that it becomes difficult.

(Problems to be Solved by the Present Invention) The present invention provides a simple opening container lid that eliminates the above-mentioned conventional inconveniences and can surely tear the edge along the scraped edge.

(Means for Solving the Problems) In order to achieve such an object, the present invention provides an easily tearable thin film sheet covering the opening of a ring-shaped member attached to the container opening, and adheres to the surface of the sheet. In a container lid in which a strip is provided, a grip portion not bonded to the sheet is provided at the starting end of the strip, and the grip is pulled up and the sheet is broken and opened along the strip, the strip is swirled. Characterized in that side edges adjacent to each other are continuously provided via a score line, and a scraping edge of powder or the like facing the extreme end of the score line is provided.

(Operation) Since the present invention employs such a configuration, when pulling up the strip and tearing the sheet, the sheet is broken along the score line regardless of the pulling direction. At this time, even if the score line is not directly provided on the sheet, the progress of breakage of the sheet is surely guided by the score line that continuously connects the strips. Thereafter, the tearing of the sheet is guided from the extreme end of the score line to the starting end of the scraping edge, and the sheet is torn along the scraping edge. Then, when the band-shaped piece is further pulled up, breakage of the sheet progresses along the opening shape, and at the same time when the opening is completed, the band-shaped piece and a part of the torn sheet are separated from the container lid. At this time, since the strip is formed in a spiral shape, even if the cut of the sheet guided by the score line is formed relatively sharp, the relatively sharp cut is formed from the container lid together with the strip. Be separated.

(Embodiment) The embodiment will be described in detail with reference to FIGS. 1 to 3 showing an embodiment of the present invention.

Reference numeral 1 is a ring-shaped member that constitutes the outer shape of the container lid and is made of a metal material for attaching to the container opening, and 2 is bonded to the bottom surface side of the ring-shaped member 1 to cover the opening of the ring-shaped member 1. The thin film sheet 3, 3 is a strip-shaped piece adhered to the surface of the sheet 2, and 4 is a gripping portion provided at the starting end of the strip-shaped piece 3 and not yet adhered to the sheet 2.

The ring-shaped member 1 is provided with a flange portion 5 for winding and tightening around a container opening (not shown), and a flat portion 6 for adhering the sheet 2 is provided on the opening side of the ring-shaped member 1.

The sheet 2 is made by laminating a heat-welding synthetic resin on an aluminum foil, and is welded to the bottom surface side of the flat portion 6 of the ring-shaped member 1.

The strip 3 is made of a thermoplastic synthetic resin, is provided at the center of the sheet 2 and is provided with a grip portion 4, which has a spiral shape of one and a half rounds with this as a starting end, and the outer periphery of the strip 3. Was formed integrally with the protective piece 7 that covers the room of the sheet 2 that is not covered with the strip 3.

The strip-shaped piece 3 has a shape in which the inner peripheral portion 3a has a semicircular shape and the remaining outer peripheral portion 3b is continuously provided along the portion 3a.
A score line 8 which is easy to break is provided at the boundary between both parts 3a and 3b. Reference numeral 9 is a connecting piece integrally formed with the strip-shaped piece 3 and adhered to the sheet 2 together with the strip-shaped piece 3, and connects the strip-shaped piece 3 to the protective piece 7 in a separable manner.

The grip portion 4 is formed in a ring shape at its tip portion, and the lower surface of the base portion is bonded with an arc-shaped bonding edge 10 of the strip 3 as shown by a broken line in FIG. Two
Is not adhered, and the side portion of the tip portion that intersects in the pulling-up direction is integrally formed with the strip-shaped piece 3 in the vicinity thereof, and is detachably connected with the strip-shaped piece 3 and the connecting piece 11 that is adhered to the sheet 2. .

The protection piece 7 includes a straight edge 7a for scraping off the powder contained in the container.

The score line 8 has its extreme end 8'as shown in the first drawing,
It is formed toward the starting end of the scraping edge 7a of the protection piece 7,
As shown in the drawing, from the inner peripheral portion 3a of the strip 3 to the outer peripheral portion 3b
It is formed by a groove 12 composed of an inclined surface 8a which is inclined toward and a vertical surface 8b which is vertically erected on the outer peripheral portion 3b side.
Further, the connecting piece 9 is also connected through a groove 13 formed by an inclined surface 9a inclined toward the protective piece 7 and a vertical surface 9b standing upright on the protective piece 7 side as shown in FIG.

Further, as shown in FIG. 3, the connecting piece 11 is connected via a groove 14 composed of an inclined surface 11a inclined toward the grip 4 and a vertical surface 11b standing upright on the grip 4 side.

15 is a strip 3 for facilitating pulling up of the grip 4.
It is a groove formed by a V-shaped notch that is provided across.

Next, the opening operation of the above embodiment will be described.

First, when gripping the grip portion 4, if the side portion of the grip portion 4 opposite to the connected side portion is gripped, the groove 14 of the connecting piece 11 is bent, whereby the groove 14 of the connecting piece 11 is naturally formed.
Is broken and the grip portion 4 is separated from the connecting piece 11. When the sheet 2 is gripped and pulled up, the sheet 2 is torn along the strip 3. When the strip 3 is further pulled up, the score line 8 connecting the inner peripheral portion 3a and the outer peripheral portion 3b of the strip 3 to each other
The tearing of the sheet 2 is advanced while breaking the groove 12 of the sheet 2. Then, the sheet 2 is torn and opened along the opening of the protective piece 7 while breaking and separating the groove 13 of the connecting piece 9.

At this time, when the grip portion 4 is first picked, the groove of the connecting piece 11 is
The inclined surface 11a in which 14 is inclined toward the grip 4 and the grip 4
Since it is composed of the vertical surface 11b standing upright vertically on the side, the side part opposite to the connected side part is easy to pick and can be easily separated by picking. In addition, when the score line 8 is broken, the score line 8 is inclined from the inner peripheral portion 3a of the strip 3 toward the outer peripheral portion 3b, and from the vertical surface 8b standing upright on the outer peripheral portion 3b side. Since it is formed by the groove 12, the outer peripheral portion 3b which is continuously provided can be easily broken without lifting. When the score line 8 breaks and reaches the extreme end of the score line 8, the extreme end faces the starting end of the scraping edge 7a of the protection piece 7, so that the breaking of the sheet 2 is scraped. You can proceed along with.

Then, when the grip portion 4 of the strip 3 is further pulled up, the sheet breaks along the inner peripheral edge of the protective piece 7, and the strip 3 is removed at the same time when the opening is completed. At this time, since the strip-shaped piece 3 is formed in a spiral shape, even if the cut edge of the sheet 2 guided by the score line 8 is formed relatively sharp, the relatively sharp cut edge is formed in the strip-shaped piece 3. Can be removed with.

(Effect) As is apparent from the above description, the present invention has the side edges of the strips that are adjacent to each other continuously provided via the score line, and the scraping edge facing the extreme end of the score line is provided. The score line can reliably guide the rupture direction of the sheet, and the tearing direction of the sheet can be surely directed from the extreme end of the score line to the sliding cut edge. As a result, the sheet can be reliably torn along the scraped edge.

Further, the strips are formed in a spiral shape, and the side edges adjacent to each other are continuously provided via the score line, so that the cut edge of the sheet is formed relatively sharply by being guided by the score line. However, the relatively sharp cut can be removed with the strip.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a plan view thereof, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. FIG. 4 is a sectional view taken along the line III-III in FIG. 4, and is a plan view of a conventional example. 1 ... Ring-shaped member, 2 ... Thin film sheet, 3 ... Strip-shaped piece, 4 ... Gripping portion, 7a ... Sliding edge, 8 ... Score line

Claims (1)

[Scope of utility model registration request] 1. An easily tearable thin film sheet covering the opening of a ring-shaped member attached to the container opening,
In a container lid in which a band-shaped piece adhered to the surface of the sheet is provided, a gripping part which is not adhered to the sheet is provided at the starting end of the band-shaped piece, and the gripping part is pulled up to break and open the sheet along the band-shaped piece. The strip-shaped piece is formed in a spiral shape, side edges adjacent to each other are continuously provided via a score line, and a scraping edge of powder or the like facing the extreme end of the score line is provided. Simple open container lid