JPH0627592U - Pill fur proof cap - Google Patents

Abstract

(57) [Summary] [Structure] A PP ring connected to the lower part of the cap body by a bridge is provided, and is provided on the inner peripheral wall surface of the PP ring below the screw part of the container body mouth when the cap is lifted when opened. In a pill fur proof cap made of synthetic resin, which has locking claws to prevent the pill fur proof ring from rising by locking it on the bulging part, at least the thickness of the base end of the locking claw is It is configured to be thinner than the central portion of the locking claw. [Effect] In the cap release process, even if the locking claw hits the mouth part when the cap is placed on the container mouth, the locking claw is elastically deformed in the vertical direction, and the cap is not placed diagonally. Since the cap is put on the part in a normal state, it is possible to significantly reduce the defect occurrence rate during capping, improving capping suitability and enabling high-speed operation of the capping machine and improving productivity. it can.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a synthetic resin pill fur proof cap (hereinafter referred to as a PP cap) having a pill fur proof ring for confirming whether a container is unopened or unopened. .

[0002]

[Prior art]

 Conventionally, in order to prevent illegal refilling of contents such as beverages, a synthetic resin with pill fur proof characteristics is constructed so that the lower part of the cap (pill fur proof ring) is separated by opening the cap. PP caps are available. 6 and 7 show a cap described in Japanese Patent Application Laid-Open No. 2-296666, which is a conventional example of this type of PP cap, and the PP cap 1 includes a top plate 2 and a peripheral edge thereof. The cap body 4 having the hanging cylindrical portion 3, the pill fur proof ring 5 (hereinafter referred to as PP ring) provided below the cap body 4, and the PP ring 5 and the cap body 4 are provided. It is provided with a bridge 6 to be connected and a liner 7 formed in a sheet shape on the inner surface of the top plate 2. A slit 8 is formed between the PP ring 5 and the cap body 4 which are connected by the bridge 6. Further, on the inner circumference of the PP ring 5, there is formed a locking claw 9 for engaging with a bulging portion for locking the PP ring 5 formed below the screw portion on the upper outer peripheral surface of the container mouth. Further, an interference bead 10 is formed below the locking claw 9.

[0003]

[Problems to be solved by the device]

 However, in the conventional PP cap made of synthetic resin, there is a problem that the applicability between the capping machine and the cap is poor when the cap is attached to the mouth 11 of the container. That is, in the cap release step of placing the cap 1 on the mouth 11 when the mouth 11 of the container to be transported reaches the cap supply position, the conventional cap 1 has a small deformation (flexibility) of the locking claw 9 and is not related. The pawl 9 hits the bottle mouth, and the covering of the cap on the container mouth deteriorates, causing many defects such as diagonal covering and non-capping at the time of capping, which makes it impossible to operate the capping machine at high speed. It was

The present invention has been made in view of the above circumstances, and an object thereof is to provide a PP cap made of synthetic resin capable of improving the capping suitability and increasing the speed of capping.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the PP cap according to claim 1 has a screw portion formed on an upper portion thereof, and a PP ring locking bulging portion bulging outward is formed below the screw portion. A PP cap used to close the mouth of a container body, the cap body having a top plate and a skirt portion hanging down from the peripheral edge thereof, a PP ring provided below the cap body, and these PP rings. And a liner provided on the inner surface of the top plate, and the inner peripheral wall surface of the PP ring has a lower screw portion of the container body opening portion when the cap is lifted when opened. In a PP cap made of synthetic resin, which is provided with locking claws for locking the PP ring from rising by being locked to the bulging portion provided on one side, the thickness of the base end of the locking claws may be different. That it was thinner than the part It is an butterfly.

According to a second aspect of the present invention, in the PP cap, the thickness of the base end and the tip of the locking claw is the thickness of the center of the lock claw and the thickness of the base and the tip of the locking claw. The thickness is made thinner than the thickness of the central portion of the locking claw.

Further, in the PP cap according to the third aspect, the thickness of the base end portion and the tip end portion of the locking claw is related so that the central portion of the locking claw projects toward the lower surface side of the locking claw. It is made thinner than the central part of the toe.

Further, as described in claim 4, the thickness of the base end portion of the locking claw in each of the PP caps is made thin so as to be 30 to 70% of the thickness of the central portion of the locking claw. Is desired.

[0009]

[Action]

 In the PP cap of the present invention, the locking claw is deformed by making the thickness of the base end or the base end and the tip of the locking claw of the PP cap smaller than the thickness of the central part of the locking claw. When the cap is placed on the mouth of the container in the cap release process, even if the pawl hits the mouth, the pawl is elastically deformed and the cap is normally covered on the mouth of the container.

[0010]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a view for explaining an embodiment of the PP cap of the present invention. The PP cap 20 includes the same components as the PP cap 1 shown in FIG. 6, and the same components are designated by the same reference numerals.

The PP cap 20 includes a cap main body 4 having a disc-shaped top plate 2 and a cylindrical portion 3 hanging down from the peripheral edge thereof, a PP ring 5 provided below the cap main body 4, and these PP caps 4. A bridge 6 that connects the ring 5 and the cap body 4 and a liner 7 formed in a sheet shape on the inner surface of the top plate 2 are provided. A slit 8 is formed between the PP ring 5 and the cap body 4 which are connected by the bridge 6. Further, on the inner periphery of the PP ring 5, a locking claw 2 for engaging with a bulging portion 13 for locking the PP ring 5 formed below the screw portion 12 on the outer peripheral surface of the upper portion of the container opening 11. 1 is formed, and an interference bead 10 is formed below the locking claw 21.

As shown in FIG. 3, the locking claw 21 is configured such that the thickness of the locking claw base end 21a and the thickness of the locking claw tip 21b is thinner than the thickness of the locking claw central portion 21c. Has been done. As a result, the locking claw central portion 21c projects toward the lower surface side of the locking claw 21 beyond the locking claw base end 21a and the locking claw tip 21b. The thickness of the locking claw base end portion 21a is preferably thin so as to be 30 to 70% of the thickness of the locking claw central portion 21c. If the thickness of the locking claw base end portion 21a is less than 30% of the thickness of the locking claw central portion 21c, the locking claw 21 will be too weak and the locking claw 21 will be closed when the cap is opened. Since the locking claw 21 is weak when it comes into contact with the bulging portion 11 of 11, the cap rotation angle until the bridge is cut becomes large. On the other hand, if the thickness of the locking claw base end portion 21a is larger than 70% of the thickness of the locking claw central portion 21c, the flexibility of the locking claw 21 is impaired, and the defective rate in capping is the same as the conventional cap. It gets expensive. Generally, the thickness of the locking claw 21 is about 0.2 to 0.9 mm.

When the cap 20 is mounted on the container mouth 11, in the cap release step of mounting the cap 20 on the container mouth 11, when the cap 20 is mounted on the container mouth 11, the locking claw 21 is opened. Even when it hits 11, the locking claw 21 is elastically deformed in the vertical direction, the cap 21 is not placed obliquely, and the cap 20 is put on the container opening 11 in a normal state. Then, the cap 21, which is normally placed on the container mouth 11, is accurately grasped by the rotary head of the capping machine, rotated in the closing direction, and attached to the container mouth 11 as shown in FIG.

In this cap 20, the central portion 21 c of the locking claw is formed so as to project toward the lower surface side of the locking claw 21, and there is no protrusion or concave portion on the upper surface side of the locking claw 21. When the locking claw 21 passes through the bulging portion 13 of the container opening 11 during wearing, the upper surface side of the locking claw 21 closely fits the inner peripheral wall surface of the PP ring.

When the cap 20 attached to the container opening 11 is rotated in the opening direction to open it, the cap body 4 rises, but the PP ring 5 is locked to the bulging portion 13 of the container opening 11. Since the claw 21 is locked and its rising is blocked, the bridge 6 connecting the cap body and the PP ring 5 is cut, the PP ring 5 is separated and the cap body 4 is lifted and opened. . At this time, even when the locking claw 21 moves downward and the locking of the container opening 11 to the bulging portion 13 is impaired, the thickness of the locking claw central portion 21c is such that the locking claw base end 21a and the locking claw tip end. Since it is thicker than the thickness of the portion 21b, it is reliably sandwiched between the lower surface side of the bulging portion 13 and the interfering bead 10 to reliably prevent the PP ring 5 from moving upward. Good pill fur proof performance.

In this cap 20, the locking claws 21 on the inner peripheral wall surface of the PP ring 5 are arranged such that the thickness of the locking claw base end 21a and the locking claw tip 21b is smaller than the thickness of the locking claw central portion 21c. Since the cap 20 is also made thin, the locking claws 21 can be engaged even if the locking claws 21 come into contact with the mouths 11 when the cap 20 is mounted on the container mouths 11 in the cap release step of mounting the caps 20 on the container mouths 11. Is elastically deformed in the vertical direction, the cap 21 is not placed obliquely, and the cap 20 is put on the container opening 11 in a normal state. Therefore, with this cap 20, it is possible to significantly reduce the incidence of defects such as diagonally covering the cap during capping, and improve capping suitability, enabling high-speed operation of the capping machine and improving productivity. can do.

4 and 5 show another embodiment of the PP cap according to the present invention. In the cap of FIG. 4, only the base end portion 22a of the locking claw 22 is thinner than the other portion 22b. In the cap shown in FIG. 5, the thin portions of the base end portion 23a and the front end portion 23b of the locking claw 23 are expanded, and the protrusion of the central portion 23c is shortened. Also in these caps, it is possible to obtain substantially the same operational effects as those of the above-mentioned embodiment.

[0018]

[Effect of device]

 As described above, the PP cap of the present invention includes the PP ring connected to the lower portion of the cap body by the bridge, and the inner peripheral wall surface of the PP ring has the screw of the container body opening portion when the cap is lifted when opened. In a PP cap made of synthetic resin, which is provided with a locking claw for locking the pillar furproof ring from rising by being locked to a bulging part provided at the lower part of the portion, at least the thickness of the proximal end of the locking claw. Since the thickness is thinner than the thickness of the center of the locking claw, the locking claw touches the mouth when the cap is placed on the container mouth in the cap release process of placing the cap on the container mouth. Even if the locking claw is elastically deformed in the vertical direction, the cap is not placed diagonally, and the cap is put on the container opening in a normal state. Therefore, with this cap, it is possible to greatly reduce the incidence of defects such as diagonally covering the cap during capping, improving capping suitability and enabling high-speed operation of the capping machine, thus improving productivity. Can be improved.

[Brief description of drawings]

FIG. 1 is a PP for explaining an embodiment of the present invention.
It is the front view which carried out the partial cross section view of the cap.

FIG. 2 is a bottom view of the same cap.

FIG. 3 is a cross-sectional view of essential parts showing a state in which the same cap is attached to the container mouth.

FIG. 4 is a P diagram for explaining a second embodiment of the present invention.
It is a principal part expanded sectional view of a P cap.

FIG. 5 is a P diagram for explaining a third embodiment of the present invention.
It is a principal part expanded sectional view of a P cap.

FIG. 6 is a view showing an example of a conventional PP cap, and is a front sectional view showing a state in which the PP cap is attached to a container mouth.

FIG. 7 is a front sectional view of the same conventional cap.

[Explanation of symbols]

2 ... Top plate, 3 ... Cylindrical part, 4 ... Cap body, 5 ...
PP ring, 6 ... Bridge, 7 ... Liner, 8 ...
Slit, 11 ... container mouth, 12 ... screw, 13 ...
… Bulging part, 20 …… PP cap, 21 …… Locking claw, 2
1a: locking claw base end, 21b: locking claw tip, 21
c ... Central part of locking claw, 22, 23 ... Locking claw.

Claims (4)

[Scope of utility model registration request] 1. A screw part is formed on an upper part, and a bulging part for locking a pill fur proof ring is formed below the screw part to close an opening part of a container body formed by bulging outward. A pill fur proof cap that includes a top body and a cap body having a skirt portion that hangs from the periphery thereof, a pill fur proof ring provided below the cap body, and the pill fur proof ring and the cap body. The pill fur proof ring is provided with a bridge to be connected and a liner provided on the inner surface of the top plate. In a pill fur proof cap made of synthetic resin, which is provided with locking claws for locking the bulged portion provided to prevent the pill fur proof ring from rising. Pilfer proof cap, characterized in that the thickness of the proximal end of the locking claw thinner than the other portion. 2. The pill fur proof cap according to claim 1, wherein the thickness of the base end portion and the tip end portion of the locking claw is smaller than the thickness of the central portion of the locking claw. 3. The thickness of the base end portion and the tip end portion of the locking claw is larger than the thickness of the central locking claw so that the central portion of the locking claw projects toward the lower surface side of the locking claw. The pill fur proof cap according to claim 1, which is thin. 4. The thickness of the base end portion of the locking claw is thinned to 30 to 70% of the thickness of the central portion of the locking claw, and the thickness of the locking claw is reduced. Pilfer proof cap.