JPS6317705B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lid for a sealed container for storing foodstuffs and other various products. This relates to a lid body called an opening lid.

[Prior Art] Various inventions have been made to easily open sealed containers without using a separate opening tool.

For example, in the case of metal cans, a notch-shaped cut line that matches the shape of the opening is provided on the aluminum lid, and a handle is attached by caulking to the opening defined by this cut line. There is a method of opening the package by pulling it up and breaking the notched line (for example, Japanese Patent Application Laid-Open No. 52-94291).
issue).

In addition, in the case of containers made of paper or plastic, the paper or metal foil used for the container is appropriately treated, and the adhesive layer provided on the inner surface of the lid is carefully treated to adhere the container and lid. Therefore, when pulling up the handle provided on the outer edge of the lid, methods are used such as weakening the adhesive strength to such an extent that the container and lid can be easily separated (for example, Japanese Patent Application Laid-Open No. 1983-1999)
No. 118593, Japanese Patent Publication No. 51-73142).

[Problems to be Solved by the Invention] The method of caulking the handle described above requires a large number of parts, requires a lot of processing time, and therefore requires a large number of steps, which increases the cost. Since the strength of the score line is weaker than other parts, if the can is dropped with contents still in it, the can will be damaged along the notch-like score line due to the impact of the fall.

Furthermore, in the case of sealed containers in which a paper or metal foil lid is glued to a paper or plastic container, it is necessary to create a weak bond between the lid and the container, so there is a risk of the container falling with its contents inside. This resulted in drawbacks such as peeling at the joint between the lid and the container due to the impact of the drop.

[Means for Solving the Problems] In order to eliminate these drawbacks, the present invention forms an opening in the lid top plate with continuous or discontinuous cuts or discontinuous slits, and also forms an opening in the top plate on the back side of the top plate. , a lid in which the cut or slit position is reinforced with a synthetic resin plate, and the synthetic resin plate on the back of the top plate and the opening handle provided on the top surface of the top plate are integrally formed by injection molding with a closing member provided on the top plate. The closing member is penetrated from the top surface of the top plate to the back surface of the top plate using a plurality of perforations or a single perforation provided at appropriate positions of the top plate, or a through hole formed by the slit, and The opening handle, the closing member, and the synthetic resin plate can be integrally molded.

[Function] As described above, the present invention is easy to manufacture because the opening pull on the top surface of the top plate and the synthetic resin plate on the back surface of the top plate are integrally injection molded. The lid is easy to open because it has an opening and an opening pull on the top surface, and the back side of the cut or slit is reinforced with a synthetic resin plate. The lid body can be made so that it cannot be opened inadvertently.

For metal lids for which it is difficult to increase the adhesive strength of the synthetic resin plate, we attach a synthetic resin plate to the back of the top plate by using a synthetic resin closing member that is integrated with the synthetic resin plate by making multiple holes. It can be fixed securely, and for paper lids to which synthetic resin can be easily adhered, the opening pull and synthetic resin plate can be effectively integrated with a single hole. Furthermore, if the opening is formed by discontinuous slits, the slits can be used to easily integrate the opening handle on the top of the top plate and the synthetic resin plate on the back of the top plate without making any holes. It is possible to do so.

[Example] As a first example of the present invention, FIGS.
As shown in the figure, mark the desired cut line 2 on the back surface of the lid 10c.
5c is provided, and an opening 16c defined by the cut line 25c is formed, and a plurality of appropriate perforations 17c are provided on or near the cut line 25c. Then, the entire back surface of the opening 16c is covered with a synthetic resin plate to form an opening plate 26c, and a closing member 27c made of synthetic resin is connected from the opening plate 26c made of synthetic resin into the perforation 17c. In addition to filling the perforation 17c, one of the closing members 27c is used as an opening pull base 24'c,
An opening pull 24c is provided extending from this, and the upper end of the other closing member 27c is made to protrude above the upper surface of the top plate 11c, and has a structure in which a locking part 28c has a diameter larger than the diameter of the perforation 17c, Opening plate 26c, closing member 27c, and opening handle 24
The synthetic resin part c is integrally injection molded.

Since the easy-to-open lid according to this embodiment has a structure in which the synthetic resin part is integrated as described above, the metal lid in which the opening 16c is formed by the cut line 25c is inserted into the cavity of the synthetic resin injection molding machine. After inserting into the opening 16c, a synthetic resin opening plate 26c is formed on the back side of the opening 16c.
In addition, a closure member 27c is formed by filling the perforation 17c with synthetic resin, and an opening pull 24c made of synthetic resin is attached to the top surface of the top plate 11c, as shown in FIGS. 1 to 3. The synthetic resin part as shown can be injection molded in one injection, and the lid body is inserted into the cavity in this way, and the opening plate 26c, the closing member 27c, and the opening handle 24c are molded all at once by injection molding. Therefore, an easy-to-open lid can be manufactured very quickly and at low cost.

In this embodiment, a closing member 27c is connected to the opening plate 26c on the back side of the opening 16c, and the upper end of the closing member 27c serves as a locking portion 28c to prevent the opening plate 26c from moving or falling off from the lid body 10c. It is integrated with the opening 16c so that the opening 16c is formed.

Therefore, when the unsealing handle 24c is pulled up, the unsealing plate 26c does not peel off from the top plate opening 16c, but the unsealing plate 26c pulls out the opening 16c from the back side, and the opening 16c separates its periphery. The package is opened by breaking the cut line 25c.

In the second embodiment of the present invention, the opening plate 26c is not provided on the entire back surface of the opening 16c as in the previous embodiment, but the opening is provided on the back surface of the opening 16d as shown in FIGS. Cut lines 25d between the perforations 17d provided at appropriate locations on the periphery of the portion 16d
It has a structure in which a synthetic resin plate is provided as an opening ring 29d with a required width along the .

In this embodiment, the opening ring 29d is connected to the perforation 1.
Since the closing member 27d that fills and closes the opening ring 27d is prevented from escaping downward by the locking portion 28d, the opening ring 29d does not easily move from the state along the lower side of the cut line 25d. . Therefore, opening ring 2
When the integrated opening pull 24d is pulled up to 9d by the pull base 24'd, the opening ring 29d along the back side of the cut line 25d breaks the cut line 25d,
The opening 16d can be removed.

In the above-mentioned embodiment, since the lid body is made of metal,
Since it is difficult to ensure the adhesive strength of the injection-molded synthetic resin part to the top plate, a hole is made on the cut line and the hole is filled with synthetic resin so that it is integrated with the synthetic resin plate. The synthetic resin closing member is inserted into the top plate, and the opening plate 26c or opening ring 29d, which is a synthetic resin plate, is thereby securely fixed to the top plate. However, if the lid is made of paper or synthetic resin, it is easy to glue the injection-molded synthetic resin parts to the top plate.
There is no need to provide multiple perforations.

Therefore, in the case of implementing the lid body made of paper or synthetic resin, as shown in FIG. One perforation is formed inside the annular cut line 25g, and a closing member that fills the perforation opens the opening ring 29g on the back of the top plate 11g and the opening pull 24g on the top of the top plate 11g. shall be connected as a whole.

In this embodiment, when the opening handle 24g is pulled up, the pulling force is transmitted to the opening ring 29g which is integrated with the puller 24g by the closing member, and the opening 16g surrounded by the continuous or discontinuous annular cut line 25g is opened on the top plate. Separated from 11g, opening ring 29g and opening 1
6g are easily removed.

In addition, the opening ring 2 adhered along the lower side of the discontinuous annular cut line 25g in the embodiment shown in FIG.
In contrast to 9g, in another embodiment of the present invention, as shown in FIG. 7, a cut line 30h for separating the annular synthetic resin plate that delimits the opening 16h is provided on the back surface of the opening ring 29h. be. In this case, the pull base 24'h formed by filling the perforation shall be provided inside the annular synthetic resin plate separation cut line 30h,
The separation cut line 30h is formed to match the position of the annular cut line 25h (see FIG. 7B).

In such a structure, when pulling up the opening handle 24h, the opening ring 29h is connected to the top plate 11h of the lid body 10h by the annular synthetic resin plate separation cut line 30h.
The inner ring part 31h is separated into an inner ring part 31h and an outer ring part 32h along a discontinuous annular cut line 25h provided in the inner ring part 31h.
Since the outer edge of the inner ring 31h is aligned with the outer edge of the opening 16h, it can be pulled up without being hindered by the peripheral edge 13h of the inner ring 31h, making opening easier than in the previous embodiment.

In another embodiment of the present invention, the opening 16i is divided into a desired annular shape by discontinuous slits 33i provided in the top plate 11i, as shown in FIG. One perforation was made in the discontinuous annular slit 33i provided in the discontinuous annular slit 33i, filled with a closing member, and an opening pull 24i was formed on the upper side of the hole, and an opening ring 29i as a synthetic resin plate was integrally molded on the lower side. Structure. Because of this structure, when pulling up the opening handle 24i, the slit 33
By simply cutting the discontinuous portion 34i of i, the opening 16i can be easily separated from the top plate 11i and opened.

Next, as another embodiment of the present invention, as shown in FIG. 10, a closing member 27j is filled into a discontinuous annular slit 33j that partitions an opening 16j provided in a top plate 11j, and is molded integrally with an opening ring 29j. In contrast, a cut line 30j for separating the annular synthetic resin plate is provided.

In this embodiment, the opening ring 29j is separated into an inner ring part 31j and an outer ring part 32j by the annular synthetic resin plate separation cut line 30j, and the opening 16j is defined by the annular slit 33j. It has a structure. Therefore, when the opening handle 24j is pulled, the opening ring 29j is connected to the inner ring part 31 by the separating cut line 30j.
j and the outer ring part 32j, and the opening part 16j is easily opened together with the inner ring part 31j.

In addition, as another embodiment of the present invention, as shown in FIG. 8 and FIG.
A discontinuous portion 35k, 35l is provided only at one location along the lower side of the opening ring 29k, 29l, and a hole in the top plate provided on the opening ring adjacent to the discontinuous portion is filled with synthetic resin, Therefore, the handle base 24'k, 2
4'l, and is provided with opening pulls 24k and 24l that are integrated with an opening ring that is a synthetic resin plate on the back of the top plate. With this structure, when pulling up the opening handle, the opening rings 29k and 29l
Since the opening can be caused to break in only one direction by the discontinuous portions 35k and 35l, it is easier to pull it up than when the breakage progresses from the opening pull part to both sides as in the previous embodiments. It is.

Furthermore, in the above-mentioned embodiments, the direction in which the opening handle is attached to the opening is in most cases extended outward from the closing member that serves as the base of the handle, but is not limited to this, and depends on the position of the opening and Depending on the size, it may extend inward from the base of the handle as shown in FIGS. 1, 4, 8, and 11.

[Effects of the Invention] The lid according to the present invention has a synthetic resin plate that reinforces the opening, prevents the opening from accidentally breaking open due to a drop impact, etc., and prevents the filling from being a gas drink. , fruit juices, gel foods such as jelly, or dry foods such as snacks, and when pressure resistance is not required for the container, a lid body that can sufficiently seal and is easy to open. The lid body is easy to manufacture and has excellent mass productivity.

[Brief explanation of the drawing]

1 to 3 relate to the first embodiment of the lid according to the present invention, and are respectively a plan view and a top view.
FIGS. 2 and 3 are longitudinal sectional views of FIG. 1, and FIGS. 6
Figures A and B, Figures 7A and B, Figures 8A and B, Figures 9A and B, Figures 10A and B, and Figures 11A and B are planes showing other embodiments, respectively. They are a figure and a longitudinal cross-sectional view. 10=Lid, 11=Top plate, 16=Opening, 17
= Top plate perforation, 23 = Lower edge material, 24 = Opening handle,
24' = Pull base, 25 = Cut line, 26 = Opening plate,
27=closure member, 28=locking part, 29=opening ring,
30=scission line for separating the annular synthetic resin plate, 31=inner ring part, 32=outer ring part, 33=slit, 34=discontinuous part of slit, 35=discontinuous part of resin ring.

Claims (1)

[Scope of Claims] 1. A lid made of metal or paper provided with an annular cut line for forming an opening in the top plate, and having a through hole on or near the cut line. A synthetic resin plate is placed on the back surface of the top plate along the cut line at the cut line position, and a synthetic resin closing member integrated with the synthetic resin plate is used to seal the through hole. A synthetic resin closing member is filled in the through hole, and an opening pull integrated with the closing member is provided on the top surface of the top plate, so that the synthetic resin plate, the closing member, and the opening pull are integrally made of metal. Or a lid body characterized by being injection molded onto a paper lid body. 2 A plurality of through holes are provided in the metal lid body along the cut line, and an opening pull is provided at the upper end of one closing member, and the upper end of the other closing member is protruded from the top surface of the top plate. 2. The lid according to claim 1, wherein the closing member has a diameter slightly larger than the diameter of the through hole, and the closing member which does not have a handle at its upper end has a locking portion at its upper end. 3 When creating multiple through holes on the cut line,
The lid body according to item 1, characterized in that the through hole has a slit shape that is extremely long in length relative to the width of the through hole, so that the slit line is formed by the slit-like through hole. . 4. A structure in which the synthetic resin plate is a disc-shaped synthetic resin plate with a diameter slightly larger than the opening defined by the score line, and is attached to the back surface at the score line position while reinforcing the entire back surface of the opening. The lid according to any one of Items 1 to 3, characterized in that: 5. The lid according to any one of items 1 to 3, characterized by a structure in which the synthetic resin plate is annular with a required width along the cut line. 6 A separation cut line is provided on the back side of the annular synthetic resin plate at a position corresponding to the annular cut line provided on the top plate, and
6. The lid according to item 5, characterized in that the synthetic resin plate has a structure that can be separated into an inner ring part and an outer ring part. 7 A fifth embodiment characterized by a structure in which a discontinuous portion is provided at a side position of the opening pull in the annular synthetic resin plate.
The lid described in section.