JPS5820659A - Vessel cover having pilfer-proof characteristic - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to container lids, and more particularly to container lids having pilfer-proof properties.

Recently, as container lids for containers such as beverage bottles, container lids having so-called pilfer-proof properties (properties to prevent unauthorized refilling of contents, etc.) have been widely put into practical use. Container lids with pilfer-proof properties are
As is well known to those skilled in the art, the device includes a top surface and a skirt extending from the periphery of the top surface, and a pilfer-proof portion is defined at the bottom of the skirt with a breakable line formed therein. Such a container lid is attached to and seals the container mouth by fitting over the container mouth and locking the lower part of the skirt to the container mouth. When opening the container opening, at least a part of the breakable line formed in the pilfer-proof part is broken, leaving the part below the breakable line and destroying the rest of the container lid. The entire container lid, including the lower portion (or breakable twin), is removed from the container mouth.

Thus, known container heavy wires with pilfer-proof properties are integrally formed from the same material, such as aluminum, aluminium-based alloys, chromic acid-treated steel, or sheet metal such as tinplate; Therefore, the following inconvenience occurred.

For example, since aluminum or aluminum-based alloy plates have relatively low hardness and rigidity, it is difficult to attach the container lid to the container opening as required. If, for example, a foreign object collides with the top surface of the container lid or the boundary between the top surface and the skirt after the container is attached to the container during transportation, the container lid will be relatively easily deformed and the appearance of the container lid will be damaged. There is a problem in that the sufficient sealing of the mouth of the container is often damaged. Furthermore, since aluminum or aluminum-based alloy plates are relatively expensive, if the entire container lid is integrally formed from aluminum or aluminum-based alloy plates, the manufacturing cost of the container lid will inevitably be relatively high. .

On the other hand, if the entire container lid is integrally formed from chromic acid treated steel or tin plate, the above-mentioned leakage problem can be solved. However, this creates a separate q problem. That is, in a container lid having a pilfer-proof property, at least a portion of the breakable twin formed in the pilfer-proof portion must be broken when the above-mentioned commuter opening is opened. However, chromated steel or tin plate has relatively high hardness or rigidity, and therefore generally requires considerable force to break the breakable twin formed in the pilfer-proof portion when opened. This makes opening the package quite difficult, especially for women and children. Of course, this problem arises when, for example, the breakable line is composed of a plurality of slits (kerfs) formed at intervals and a bridge section located between these slits. By significantly reducing the dimensions of the part (in other words, the slit interval), or when the line that can be expanded and broken is composed of a so-called score formed by reducing the thickness of the material, To some extent, the problem can be overcome by significantly reducing the residual material thickness in the score. However, the table shows that in order to significantly reduce the dimensions of the bridge or the residual material thickness in the score, it is necessary to significantly increase the machining accuracy for forming the slit or forming the score. , the manufacturing cost will inevitably increase. In addition, in the case of chromate-treated steel or tin plate, it is extremely difficult, if not impossible, to apply anti-rust treatment to the cut edges as well, so the cut edges tend to rust in a relatively short period of time. Therefore, rust often forms within a relatively short period of time in the area defined by the cutting edge, i.e., the lower edge of the skirt, and the area of the slits that make up the breakable line. Furthermore, as is well known to those skilled in the art, in the case of lithium acid treated steel or tinplate, breaking the rupturable twin when opening the lid of the container is more likely to result in bonding than in the case of aluminum or aluminum-based alloy plate. There is a tendency for very sharp break edges to be formed, and there is a high risk that consumers' fingers or the like may be damaged by such bad and sharp break edges.

The present invention has been made in consideration of the above facts, and its main purpose is to provide a new and excellent container lid that solves the above-mentioned inconvenience of leakage found in conventional container lids that have pilfer-proof properties. It is to be.

The inventor of the present invention breaks the conventional wisdom in the art and proposes that if a container lid is made by connecting at least two pieces made of materials having mutually different properties in an appropriate manner, the conventional We have discovered that the above-mentioned leakage problem found in container lids can be skillfully solved.

That is, according to the present invention, it is provided with a skirt that hangs down from the periphery of the top surface and the bottom surface, and at least a portion of the lower part of the skirt defines a pilfer-proof portion in which a breakable line is formed. In the container lid, the top surface and the upper part of the skirt are made of a metal material, and the pilfer-proof part is made of a ferrous metal material different from the ferrous metal material forming the shell top surface and the upper part of the skirt. A container lid is provided, characterized in that it is formed from a material having nine characteristics.

The material forming the top surface and the upper part of the skirt and the material forming the pilfer-proof part can be selected as appropriate depending on the desired characteristics, but in general, the material forming the top surface and the upper part of the skirt can be selected depending on the desired characteristics.
-) A metal material with relatively high hardness and rigidity, such as tin plate or chromic acid treated steel, is suitable as the material for forming the upper part of the upper part, and aluminum or an aluminium-based alloy or It is suitably formed from a material having relatively low hardness and stiffness, such as a suitable synthetic resin. 9. The top surface, the upper part of the skirt, and the Billfold pull part are made from two types of materials that are the same raw material, but have different properties such as hardness and/or rigidity due to different heat treatment and thickness. For example, the top surface and the upper part of the skirt are formed from aluminum or an aluminum base metal plate with relatively high hardness and rigidity, and the pilfer-proof part is formed from an aluminum or aluminum base alloy plate with relatively low hardness and rigidity. You can also do it.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A more detailed description will now be given of the accompanying drawings, which illustrate specific examples of container closures constructed in accordance with the present invention.

1 To explain with reference to Figures 1 and 2, the whole number is 2.
The container lid constructed according to the present invention and shown in FIG. 9 has a circular top surface 4 and a cylindrical skirt 6 depending from the periphery of the top surface 4.

It is preferable that a sealing member 8 of an appropriate form is disposed on the inner surface of the top surface 4 and is fitted to the edge of a container opening (not shown) to be sealed. The sealing member 8, which is conveniently formed from a suitable synthetic resin material such as polyethylene or vinyl chloride resin, can be made by, for example, supplying a synthetic resin material in a softened molten state to the inner surface of the top surface 4, and then applying the synthetic resin material to the inner surface of the top surface 4. directly onto the inner surface of the top surface 4 by stamping it into a desired shape, or by pouring a softened and molten synthetic resin material into an appropriate shape such as an annular shape onto the inner surface of the top surface 4 and then foaming it. Alternatively, it can also be formed by separately molding a synthetic resin material into an appropriate shape and then positioning the molded synthetic resin material on the inner surface of the top surface 4. can.

On the other hand, the skirt 6 has an upper part 10 and a lower part 12 defining a pilfer-proof part.

In the illustrated example, the upper end of the upper portion 10 of the skirt 6 is formed with a knurling or uneven portion 14 for making it easier to grasp and rotate the container lid 2 with fingers. Lower part of skirt 6, ie pilfer-proof part 1
2, a breakable line 16 extending in the circumferential direction is formed, and a pilfur-proof upper part 12m and a pilfur-proof hem 12b are formed above this breakable line 16.
It is divided into. This breakable line 16 is formed between a plurality of slits (cut grooves) 18 extending in the circumferential direction and a new bridge section 20. ! :
or by a so-called score formed by a layer that reduces the thickness of the material.

The container lid 2 as described above is applied, for example, to a container opening as shown in Figure #I3. The illustrated container mouth, generally indicated by the numeral 22, has on its outer circumferential surface a thread 24 and a jaw 26 located below the thread 24.

When attaching the container lid 2 to the container opening 22 and sealing the container opening 22, as shown in FIG. The sealing member 8 is engaged with the edge of the container opening 22. Then, while maintaining this state, a suitable processing roller (not shown), which is known per se, is formed on the outer peripheral surface of the container opening 22 at the upper 1° of the skirt 6 of the container lid 2. A thread 28 is formed along the thread 24, and the lower end of the skirt 6 of the container lid 2, that is, the lower end of the pilfer-proof part 12, is bent radially inward to form a thread 28 on the outer peripheral surface of the container opening 22. It is engaged with the annular lower surface of the jaw portion 26 formed therein.

When the container lid 2 attached to the container mouth 22 is detached from the container mouth 22 and opened as described above, the container lid 2 is rotated in the opening direction, that is, in FIG. Rotate counterclockwise when viewed from above. In this way, since the thread 28 formed on the container lid 2 is moved along the thread 24 formed on the container mouth 22, the container lid 2 is prevented from moving upward in the axial direction. however,
The lower end of the skirt 6 of the container lid 2, that is, the lower end of the pilfer-proof part 12, is locked to the jaw part 26 of the container mouth part 22, and is thus prevented from moving upward in the axial direction. A moderate stress acts on the bridging portion 20 of the breakable line 16 formed in the pull 2 portion 12, thereby causing the breakable twin 16 (its bridging portion 20
) is torn, and the pilfer-proof part 12 is broken at the pilfer-proof upper part 12a above the breakable line 16
and the pilfer-proof hem 12b below the rupturable line 16, and after that, the portions of the container lid 20 other than the pilfer-proof hem 12b can freely move upward in the axial direction. Therefore, as the container lid 2 rotates, it is moved upward in the axial direction and separated from the container opening 2z, and the container opening 22 is thus opened.

On the other hand, the pilfer-proof hem 12 has a container opening 22.
remain there without being removed from it. .

Therefore, the above-described configuration of the illustrated container lid 2 merely shows an example of the configuration of the container lid to which the present invention is applied, and does not constitute a novel feature of the container lid 2 according to the present invention. do not have.

Referring again to FIGS. 1 and 2, in the illustrated container lid 2 according to the present invention, the top surface 4' and the upper part 10 of the skirt 6, and the lower part of the skirt 6, that is, the pilfer-proof part 12, are It is important that they are separately formed from materials having nine mutually different properties and are interconnected.

The top surface 4 and the upper part 10 of the skirt 6 can be made of any suitable metal material, but preferably made of a metal material with relatively high hardness and rigidity. Because the fourth
As shown in the figure, after the container lid 2 is attached to the container opening 22 in the required passage, for example, during transportation of the container, foreign matter may collide with the top surface 4 of the container lid 20 or the upper part 10 of the skirt 6. Impacts are often applied, but even if such an impact is applied, the container lid 2 may be significantly deformed, the appearance of the container lid 2 may be damaged, and the sealing of the container opening 22 may be damaged. Container lid 20 top surface 4
This is because it is desired that the upper part 10 of the skirt 6 has sufficient hardness and rigidity. Examples of metal materials that have relatively high hardness and rigidity and are suitable for forming the top surface 4 and the upper part 10 of the skirt 6 include tin plate and chromic acid treated steel plate. In addition to having relatively high hardness and rigidity, lithium-coated steel sheets and chloroacid II and steel sheets are relatively inexpensive compared to, for example, alonium or aluminum-based alloys, so they are also advantageous in terms of manufacturing costs. It is a suitable metal material.

On the other hand, the pilfer-proof portion 12 is preferably formed from a material having relatively low hardness and rigidity. ′
This is because, as explained with reference to FIG. 4, when opening the container opening 22, it is necessary to break the breakable line 16 formed in the pilfer-proof part 12. This is because the pilfer-proof portion 12 is desired to have relatively low hardness and rigidity so that even a child can relatively easily break the breakable line 16 and open the container opening 22. Hardness and rigidity are relatively low, and examples include pilfer-proof 12mm or alponium-based alloy plates. The pilfer-proof portion 12a can also be conveniently formed from an appropriate synthetic resin material such as polypropylene or polyethylene, and the pilfer-proof portion 12 may be formed from an alonium- or aluminum-based alloy plate or an appropriate synthetic resin material. Then, in addition to the advantage that the breakable line 16 can be broken relatively easily when opening the container opening 22,
The following benefits can also be obtained: That is, when the pilfer-proof part 12 is formed from a tin plate or a chromic acid-treated steel plate, which are mentioned as metal materials suitable for forming the top surface 4 and the upper part 1o of the skirt 6, anti-corrosion treatment must be applied. The area defined by the cutting edge of the metal material where it is difficult to
2) and the slit 1 in the breakable twin 16
8C) Rust often develops on the periphery within a relatively short period of time. On the other hand, if the pilfer-proof portion 12 is formed from an alonium- or aluminum-based alloy plate or a suitable synthetic resin material, problems related to rust can be reliably avoided, as is easily understood. Further Kt
In addition, when the pilfer-proof part 12 is formed from a tin plate or a chromic acid-treated steel plate, when the rupturable line 16 is ruptured, an extremely sharp rupture edge tends to be generated. However, if the binder-proof part 12 is made of aluminum or aluminum-based alloy plate or a suitable synthetic resin material, the breakable line 16
The break edges produced by the breakage are relatively blunt 9, and the risk of damage to the consumer's finger ring due to the break edges is sufficiently suppressed.

As described above, the top surface 4 and the upper part 10 of the skirt 6 are formed from a tin plate or a chromic acid-treated steel plate, and the pilfer-pluto portion 12 is formed from an alumium or aluminum-based alloy plate or an appropriate synthetic resin material. Therefore, it is preferable that the materials forming the top surface 4 and the upper part 10 of the skirt 6 and the materials forming the pilfer-proof portion 124 are mutually different, although if desired, the raw materials themselves may be the same. However, the hardness and/or
Alternatively, the top surface 4 can be made from two types of metal materials with different stiffness characteristics.
and the upper part 10 of the skirt 6 and the pilfer-proof part 12
and can also be formed separately.

For example, the top surface 4 and the upper part 10 of the skirt 6 are formed from an aluonium- or aluminum-based alloy plate that has relatively high hardness and rigidity due to heat treatment and/or thickness,
The pilfer-proof portion 12 may also be formed from an aluminum or aluminum-based alloy plate that has relatively low hardness and rigidity due to the heat treatment and/or thickness.

In addition, the top surface 4 and the upper part 10 of the skirt 6 are formed from a tin plate or a chromic acid treated steel plate which has relatively high hardness and rigidity due to good heat treatment and/or thickness, and a pilfer-proof part 12 is applied. It can also be made from tin plate or chromic acid treated steel sheet, which has relatively low hardness and stiffness due to the heat treatment and/or thickness.

The top surface 4 and the upper part 10 of the skirt 6 can be formed from a suitable metal material such as a tin plate or a chromic acid-treated steel plate by subjecting it to well-known machining (such as punching and pressing). . On the other hand, the pilfer-proof portion 12 can be formed, for example, by the following procedure.

When the pilfer-proof part 12 is formed from a metal material such as aluminum or an aluminium-based five-base alloy plate, KtJ,
A metal material is subjected to well-known mechanical processing (such as punching and pressing) to form a cylinder with a bottom, and then the cylindrical part of the cylinder with a bottom is cut transversely to a desired width. In this way, an endless ring is formed to have the required shape O breakable twin 16 (the breakable line 16 can be formed before or after forming the metal material into a bottomed cylinder, iiJ,
).

In addition, when forming the build-proof ring 12 from a synthetic resin material such as polybopylene X-ray polyethylene, an endless ring having a breakable line 16 of a desired shape is formed by an appropriate method such as injection molding, and
The endless ring made of a metal material and an X-ray synthetic resin material formed as described above is connected to the lower end of the upper part 10 of the scar (60) formed integrally with the top surface 4 (the connection method will be described later). ), such a method 1 The strip is then curved into a ring shape, and then connected to the lower end of the upper part 10 of the skirt 6, which is formed integrally with the top surface 4. (described below), when carrying out such a procedure, when a band curved into a ring shape is connected to the lower end of the upper part 10 of the skirt 6, the band inevitably remains in the ring shape. % It is not necessarily necessary to interconnect the ends of the strip curved into a ring shape.

Next, the pilfer-proof part 1 for the lower end of the upper part 10 of the skirt 6 which is formed integrally with the top surface 4! We will discuss how to connect the upper end of the .

When the pilfer-proof part 12 is formed from a metal material, the scar (6) is formed integrally with the top 114 from a metal material, as in the specific example shown in FIGS. 1 and 2.
By applying a new taring process to the lower end of the upper part 100 and the upper end of the pilfer-proof part l-, the two can be interconnected. To explain in detail, it is! ! As shown in the figure, a relatively loose inward (and inwardly outward) curl 30 is formed at the lower end of the upper part 100 of the skirt 60, and a relatively loose outward (and inwardly outward) curl is also formed at the upper end of the pilfer proof part 120. 3 curls are formed, and both curls 30 and 3 are formed.
Combine the geese with each other. After heating, the two curls 30 and 32 are tightened together as shown in the figure, thus firmly and firmly connecting the two curls 30 and 32.

In place of such a connection method, as shown in the figure,
The lower end of the upper part 10 of the skirt 6 and the building tour proof Iku 1! It is also possible to connect the upper end portions thereof to each other by an adhesive layer 34. Further, the lower end of the upper part 10 of the skirt 6 and the upper end of the pilfer-proof part 120 can be interconnected by welding.

On the other hand, when the pilfer-proof part 12 is formed from polyethylene or a synthetic resin material such as polyethylene, when the pilfer-proof part 12 is molded by an appropriate method such as injection molding, the top surface 4 and the top surface 4 are formed from a metal material. The lower end of the upper part 16 of the integrally formed skirt 6 is positioned within the molding lid KWr, and then the pilfer-proof part 12 is molded in the mold, thus as shown in FIG. , the lower end of the upper part 10 of the skirt 6 is buried in the upper end of the molded pilfer-proof part 12. Therefore, the lower end of the upper part 10 of the skirt 6 and the upper end of the pilfur-proof part 120 are buried. There comes an i that connects the . In this case, as shown in Fig. 8, it is preferable to form a 7-shaped bay portion 36 at the lower end of the upper portion 1o of the skirt 6. Thus, as shown in FIG. 8, the synthetic resin material forming the pilfer-proof portion 12 wraps around the hook-shaped groove portion 36, thereby causing the lower end of the upper portion 10C of the skirt 6 and the pilfer-proof portion 1 to overlap.
The connection with the upper end of 2 becomes a sufficiently strong turtle. Scar)
6C) Upper part 10C) A hook-shaped bay portion 36 may be formed at the lower end (instead, a plurality of holes may be formed at appropriate intervals. In such a case, the mori, The synthetic resin material forming the pilfer-proof portion 12 is present in the plurality of holes KR, and therefore the synthetic resin material forming the pilfer-proof portion 12 is also present in the plurality of holes. The connection between the lower end of the upper part 10 and the upper end of the pilfer-proof part 12 is sufficiently strong.Instead of the above-mentioned nine-way connection method,
Even when the pilfer-proof part 12 is formed from a synthetic resin material, as shown in FIG.
The lower end of the upper part 10 and the upper end of the pilfer-proof part 13 can be interconnected by the scarf 84.

Above, the present invention has been described in detail with respect to a specific form of container lid K.
The present invention is not limited to specific specifications, but can be applied to various types of container lids having pilfer-proof properties.

For example, the customer equipment 11 shown in Figures 1, 2 and 3
12, when the container lid 2 is removed from the container opening 22 and the container opening 22 is opened, the breakable line 16 formed in the pilfer-proof part 12 is completely broken and the pilfer is removed. The proof portion 12 is completely separated into a pilfer-proof upper portion 12a and a pilfer-proof bottom portion 12%.

Therefore, the top of container lid 2! [4. The upper part 10 of the skirt 6 and the upper part 12m of the pilfer-proof are separated from the container opening 22, but the pilfur-proof hem 12b is left in the container opening 2211C. has been completed. However, on the surface, the present invention does not require that one or more lines (such a breakable line At the same time as reducing the thickness of the material or reducing the thickness of the material, and making at least a part of the bridging part 20 strong at the breakable line 16, the opening of the container is When the container lid 2 is removed from the container opening 22 and the container opening 22 is opened, at least one of the breakable twins formed in the pilfer-proof hem 12bK is broken in the round axis direction, forming the pilfer-proof hem 12b. is opened from a ring shape to a band shape,
On the other hand, the rupturable line 16 is not completely ruptured, so the rupturable line 16 is not completely ruptured, and thus the piscif-a-proof 11 part 1! b is not completely separated from the pilfer-proof upper part 12m, but is partially KtiP, so that the pilfer-proof upper part 12aK remains connected.Thus, the pilfer-proof hem f2b also connects to the container opening. The present invention can also be applied to a container lid 2 configured such that the entire container lid 2 including the pilfer-proof hem 12b can be removed from the container opening 22 without remaining on the container opening 22.

In addition, a relatively large number of rupturable lines extending in the axial direction (such rupture lines may be so-called perforations or so-called scores that reduce the thickness of the material) are formed on the pilfer-proof hem 12b, and the container opening 22 When the container lid 2 is removed from the container and the container opening 22 is opened, the circumferential breakable line 18 is maintained without being broken, and the axial breakable line is broken to form a pill. The fur-proof hem 12b is divided into a plurality of arcuate parts, and each of the divided arcuate parts is displaced radially outward to be separated from the jaw part 26, and the fur-proof hem is formed into a fur-proof hem. The present invention is also applied to a container lid 2 configured such that the entire container lid 2, including the one-pill proof hem 12b, can be removed from the container opening 22 without any part 12a remaining in the container opening 22. can do.

Further, as shown in Figure %II9, the lower part 12 of the skirt 6
An additional arc length portion 12 extends further downward from the pilfer-proof portion 1 depth 1 together with the pilfer-proof portion 12′.
4, the present invention can be easily applied to a container lid 2, which is generally called a stell cap, and in this case,
The pilfer-proof portion 12° and the extension portion 11 can be formed integrally from the same material, but if desired, the pilfer-proof portion 12° and the extension portion 11
As shown in the figure, the extension part 121 is molded from a material having different properties from the material forming the pilfer-proof part 12°, and the upper end of the extension part 12'' is connected to the lower end of the pilfer-proof part 12'. In the container lid 2 shown in @9WJ, for example, the top surface 4 and the upper part 1'0 of the skirt 6 are formed from a tin plate or a chromic acid-treated steel plate, and the pill The fur-proof section 12' is formed from an alonium or aluminum-based alloy sheet, and the extension section 12° is formed from a tin plate or chromic acid-treated steel sheet, thus reducing the amount of relatively expensive aluminum or aluminum-based alloy sheet required. When the extension 12'' is formed from a tin plate or a chromic acid treated steel plate, an inward (and outward expanding) curl 38 is formed at the lower end of the extension 12°, as shown in FIG. and thus the extension defined by the cutting edge 12°
It is desirable to prevent rust from being exposed to the outside even if rust occurs on the edges of the material.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a specific example of a container lid constructed according to the present invention. FIG. 2 is a side view FM showing a partial cross section of the container lid shown in FIG. 1. Figure 3 company, the figure shown in Figure 1! Il! FIG. 2 is a perspective view showing an example of a container opening to which a lid is applied. FIG. 4 is a side view, partially in cross-section, of a state in which the container lid shown in FIG. 1 is attached to the mouth of the container shown in FIG. 3; 5 and 6 are partially enlarged cross-sectional views showing an example of a method of connecting the lower part of the skirt (pilfer-proof part) formed separately to the upper part of the skirt formed integrally with the top surface. Fig. wc7 and No. 81y are partially enlarged sectional views showing an example of a method of connecting the lower part of the skirt (pilfer-proof part) formed separately to the upper part of the skirt formed integrally with the top surface. FIG. 9 is a perspective view showing another specific example of a container lid constructed according to the present invention. 2--Container lid 4--Top surface 6-Skirt 10--Upper part of skirt 12-Lower part of skirt (pilfer-proof part) 16-
... Breakable line 12' - Pilfer proof part 12° - Extension part Fig. 1 Do V Mine 2 Fig. 1 Do 0 18 Fig. 9

Claims (1)

[Scope of Claims] 1. The device comprises a top surface and a skirt that hangs down from the periphery of the patterned top surface, and at least a portion of the lower part of the skirt defines a pilfer-proof portion in which a breakable line is formed. In the container lid, the shell top surface and the upper part of the cough skirt are made of a metal material, and the pilfer-proof part is made of a metal material.
A container lid characterized in that it is made of a material having different characteristics from the metal material forming the wrinkled top surface and the upper part of the cough skirt. 2. The top surface and the upper part of the skirt are made of a metal material having relatively high hardness and rigidity.
Container lid as described in section. 3. The container lid according to claim 2, wherein the top surface and the upper part of the skirt are formed from a tin plate. 4. The container sh+ according to claim 2, wherein the upper part of the wrinkled skirt and the top of the skirt is made of a humic acid treated steel plate.
it. 5. The container lid according to any one of claims 81 to 4, wherein the pilfer-proof portion is made of a material having relatively low hardness and rigidity. 6. Claim 5, wherein the pilfer-proof portion is formed from an alumonium or an alumnium-based alloy plate.
Container lid as described in section. 7. The container lid according to claim 5, wherein the pilfer fruit is made of a synthetic resin material. 8. The lower end of the metal material forming the top surface and the upper part of the skirt and the upper end of the material forming the pilfer-proof part are bonded together with an adhesive. Connected claims 1 to 7
Container lids described in any of paragraphs. 9. The pilfer-proof part is also made of a metal material, and the lower end of the metal material forming the skeleton top surface and the upper part of the skirt, and the metal material forming the mosquito pilfer-proof part. 8. The container lid according to claim 1, wherein the upper end portions are interconnected by welding. 10. The wrinkle pilfer-proof part is also formed of a metal material], and the lower end of the metal material forming the top surface and the upper part of the skirt and the metal material forming the pilfer-proof part The upper end must be crimped.
A container lid according to any one of claims 1 to 8117, which is thus interconnected. The lower end of the metal material that forms the upper part of the sill, the top surface, and the skirt, and the synthetic resin material that forms the pilfer-proof part are metal materials that have been formed into a desired shape in advance. After the lower end is positioned within the injection molding lid, a synthetic resin material is injected into the injection molding, and the lower end of the metal material is embedded in the upper end of the injection molded synthetic resin material, thereby making the lid mutually reciprocal. A container lid according to any one of claims 1 to 7, which is connected to the container lid. 12. #Claim W! where the pilfer-proof part is formed by molding a metal material or synthetic resin material into an endless ring and then connecting it to the upper part of the skirt!
i#I The container lid according to any one of Items 1 to 11. 13. A claim that is formed by cutting the linear plate material of the pilfer-proof portion into a band-like piece, then curving the band-like piece into a ring shape, and then connecting it to the upper part of the skirt. The container lid according to any one of items 1 to 11. 14. 1*The lower part of the skirt has an additional extension extending further downward from the pilfur-proof part together with the pilfur-proof part, and the additional extension forms a pilfur-proof part. 14. A container lid according to any one of claims 1 to 13, wherein the container lid is made of a material having different properties from the material containing the container lid.