JPH0716629Y2 - Cap with hidden display mark - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cap with a hidden display mark, which is provided so as to conceal a display mark such as a hit or miss of a prize.

"Prior Art" Conventionally, caps with hidden display marks are known as shown in Figs. 6 and 7.

In this case, a cap body 5 composed of a top plate portion 1 and a skirt portion 3 hanging down from the peripheral edge thereof is formed of a metal plate. A peelable printing layer 7 is provided in the center of the inner surface of the top plate portion 1 of the cap body 5, and a peelable coating layer 9 is formed on the entire inner surface of the top plate portion 1 on the printing layer 7. Is provided. The coating layer 9 is the peelable printing layer 7
Has low adhesive strength with and easily peels off from each other. On the peelable coating layer 9, a display mark 11 such as a symbol, a character or a picture is printed so as to overlap with the portion where the peelable printing layer 7 is formed. An adhesive coating layer 13 is further provided on the display mark 11 as a whole.

A liner 15 is attached to the adhesive coating layer 13 on the inner surface of the top plate portion 1 of the cap body 5 configured as described above. In the central portion of the liner 15, a peeling portion 19 is partitioned by a weakening line 17 provided so as to surround the peelable printing layer 7.

According to the cap with the hidden display mark, when the peeling portion 19 of the liner 15 is peeled off from the cap body 5 after the cap is opened, the display mark 11 printed on the cap body 5 in advance.
Are attached to the peeling portion 19 and are peeled off together, so that the display mark 11 can be easily read by looking at the back surface of the peeling portion 19.

Then, the customer can redeem the peeling portion 19 of the liner 14 to which the display mark is attached for the prize by sending it to the manufacturer by mail.

“Problems to be solved by the invention” In such a conventional cap with a hidden display mark, the inner surface of the cap body 5 has to be subjected to a complicated surface treatment of multiple layers, and the productivity is low and there is a complaint. .

"Object of the Invention" The present invention has been made in view of the above circumstances, and an object thereof is to provide a cap with a hidden display mark that can be easily manufactured.

"Means for solving the problem" In the cap with the hidden display mark of the present invention, the cap body is made of synthetic resin, and the display mark is engraved on the inner surface of the top plate. The above problem is solved by providing a liner that is in close contact with the engraved portion of the inner surface of the portion and that is locked and held by a locking projection that is formed so as to project downward on the peripheral portion of the top plate portion.

[Operation] With this cap with hidden display mark, the display mark engraved on the inner surface of the top plate is transferred to the liner closely provided, so the transferred display mark can be read when the liner is peeled off. it can.

Then, the customer can redeem the liner to which the display mark is transferred for a gift by sending it to the manufacturer by mail.

[Example] Hereinafter, a cap with a hidden display mark of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of the cap of the present invention, in which reference numeral 30 is a cap body and reference numeral 32 is a liner.

The cap body 30 includes a disc-shaped top plate portion 34 and a skirt portion 36 that hangs from the peripheral edge of the top plate portion 34.
It is made of synthetic resin such as polypropylene.
An engraved mark 38 serving as a display mark is provided on the inner surface of the top plate portion 34 of the cap body 30. In the cap of this example, the engraved mark 38 is formed in a convex shape on the top plate portion 34.

The cap body 30 is molded by an injection molding method, and a seal ridge 40 projecting radially inward is formed on the inner surface of the upper portion of the skirt portion 36 over the entire circumference. Triangular ribs 44, which are continuous with the inner surface of the skirt portion 36, are provided on the lower surface side of the seal projection 40. The inclination variation of the seal ridge 40 is suppressed. The recess 42 formed between the seal ridge 40 and the top plate 34 is provided with thin rod-shaped locking protrusions 46 ... That extend from the top plate 34 side to the seal ridge 40 side. There is.

Further, on the inner surface of the middle part of the skirt portion 36, there is formed a screw 48 which is screwed with the screw of the container mouth portion to which the cap is attached. Further, on the inner surface of the skirt portion 36, a groove extending vertically is formed.
A 50 is formed across the screw 48. A pilfer proof ring 54 is continuously provided below the skirt portion 36 via bridges 52 ...

The liner 32 is formed so as to be in close contact with the entire top plate portion 34 of the cap body 30. And liner 32
As shown in FIG. 2, a transfer mark 55 corresponding to the marking 38 of the cap body 30 is formed in a concave shape on the side close to the top plate portion 34. Further, the peripheral portion of the liner 32 is fitted in the recess 42 of the cap body 30 and is locked by the locking projections 46 to prevent the liner 32 from falling off the cap body 30.

Next, a method of manufacturing the cap with the hidden display mark will be described.

To manufacture this cap, first, the cap body 30 is molded. The cap body 30 is manufactured by injection molding a synthetic resin such as a thermoplastic resin. A replacement die is fitted in a cavity surface corresponding to the inner surface of the top plate portion 34 in a mold used for molding the cap body 30. Then, a plurality of replacement pieces having different markings 38 are manufactured, and the replacement pieces are replaced according to the display marks attached to the cap while molding is performed.

After molding the cap body 30 in this way, the liner 32
The cap body 30 is fed to an in-shell molding machine to form the. In the in-shell molding machine, first,
A predetermined amount of softened resin (for example, polyethylene or polyvinyl chloride sol) is supplied into the cap body 30. After that, as shown in FIG. 3, the molding punch 56 is lowered in the cap body 30, and the supplied resin is molded into a predetermined shape.

When the liner 32 is formed in this manner, transfer marks 55 corresponding to the markings 38 on the top plate portion 34 are formed on the side of the liner 32 that contacts the top plate portion 34.

With such a cap with hidden display mark, the top plate 34
The display mark represented by the engraved 38 on the inner surface,
Since it is transferred to the liner 32 closely attached,
The display mark can be confirmed by peeling off the liner 32.

The customer then uses the liner on which the transfer mark 55 is formed.
32 can be redeemed for free gifts by mailing to the manufacturer.

4 and 5 are for explaining the method of using the cap of this embodiment. The cap is attached to the container mouth 100 as shown in FIG. In this mounted state, the upper end of the container opening portion 100 is in pressure contact with the liner 32 provided on the inner surface of the cap, and the hermeticity inside the container is maintained. Then, the cap is opened, removed from the container opening 100, and the liner 32 is peeled off from the cap main body 30 to confirm the display mark, and used, for example, by mailing to the applicant. After stripping off the liner 32, the cap body 30 has a container mouth portion as shown in FIG.
Can be refitted to 100. At this time, the upper end of the container opening 100 contacts the top plate 34, and the outside of the upper end abuts on the locking projection 46, whereby the hermeticity inside the container can be maintained, and the cap body with the liner 32 removed. Even if the container mouth 100 is reclosed at 30, no inconvenience such as liquid leakage will occur. The cap with the hidden display mark of the present invention is not limited to the above embodiment, for example, the engraved mark 38 forming the display mark may be formed in a concave shape with respect to the cap body 30. In this case, even if the liner 32 is formed thin, there is an advantage that the display mark is surely transferred.

Further, the portion where the liner 32 is brought into close contact with the top plate portion 34 does not necessarily have to be the whole, and the marking 38
It may be only the part.

Further, the liner 32 can also be provided, of course, by accommodating a sheet-shaped thermoplastic resin in the cap body 30 and then pressing the resin with a heated mold.

[Effects of the Invention] As described above, the cap with the hidden display mark of the present invention has the display mark on the inner surface of the top plate portion of the synthetic resin cap body including the top plate portion and the skirt portion hanging from the peripheral edge thereof. Is provided with a liner that is in close contact with the engraved portion of the inner surface of the top plate and is locked and held by a locking projection that is formed to project downward on the peripheral edge of the top plate. Since it was configured, the display mark engraved on the inner surface of the top plate is transferred to the liner closely provided,
The transfer mark can be confirmed by peeling off the liner. Therefore, the cap with the hidden display mark according to the present invention is a cap with high productivity that can be manufactured without any special surface treatment on the inner surface of the cap.

Further, this cap is configured so that the liner on which the display mark is transferred is securely locked and held by the locking projection formed downward on the peripheral edge of the top plate portion. The adhesion strength is increased, and the liner can be reliably prevented from falling.

In addition, this cap has a locking projection that is formed downward on the peripheral edge of the top plate, so the liner can be peeled off from the inner surface of the cap to check the prize display, etc. When re-closing the container mouth with the cap with the liner removed, the locking protrusions can abut on the outside of the upper end of the container mouth to maintain the airtightness. Even if it is closed again, inconvenience such as liquid leakage can be prevented.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a cap with a hidden display mark according to the present invention, FIG. 2 is a perspective view showing a liner of the same embodiment, and FIG. 3 is a view for explaining a manufacturing method of the embodiment. Sectional view, FIG. 4 is a sectional view showing a state in which the cap of the same embodiment is attached to the container mouth portion, and FIG. 5 is a sectional view showing a state of reattachment after the liner of the cap of the same example is peeled off, Sixth
The figure is a cross-sectional view showing a conventional cap with a hidden display mark,
FIG. 7 is a sectional view taken along line VII-VII in FIG. 30 …… Cap body, 32 …… Liner, 43 …… Top plate,
36 …… Skirt part, 38 …… engraved.

Claims (1)

[Scope of utility model registration request] 1. An inner surface of a top plate portion of a cap body made of a synthetic resin, comprising a top plate portion and a skirt portion hanging down from a peripheral edge thereof,
The liner that is engraved with the display mark and that is in close contact with the engraved part on the inner surface of the top plate and that is locked and held by the locking projections that project downward on the peripheral edge of the top plate is A cap with a hidden display mark characterized by being provided.