JPH0738166Y2 - Bottle cap for PP cap - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottle cap for a PP cap which is combined with a PP cap (pill fur proof cap).

[0002]

2. Description of the Related Art In a conventional PP metal cap, an upper portion where a threaded portion of a skirt portion is formed and a lower portion which serves as a PP band are connected in a perforated shape provided between cut lines, and are unsealed. Therefore, when the PP cap is rotated, only the portion above the bridge is pushed up along the thread of the bottle mouth, the bridge is cut, and the ring-shaped portion remains in the bottle mouth. As described above, since the bridge is always cut off when opened, there is no danger of being opened unreasonably before reaching the consumer's hand, and it is widely used in Western liquor bottles and the like. And, of course, a screw thread and a bead are formed in the bottle mouth of the above-mentioned glass bottle for the PP cap.

Incidentally, when opening the PP cap, the PP cap may be mistakenly rotated in the opposite direction. In this case, at present, a thin aluminum PP cap is used to facilitate opening, and if the cap is mistakenly reversed, the cap threads will be deformed and will overwhelm the bottle threads. There is a risk of "thread blur". Then, if the screw threads are blurred, the cap will idle even if the cap is subsequently rotated in the correct direction, making it difficult to open the cap.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and the torque when rotating the cap in the correct direction is low and can be easily opened, and the cap can be rotated in the opposite direction. In this case, it has been completed in order to provide a bottle cap for a PP cap which produces a large resistance.

[0005]

DISCLOSURE OF THE INVENTION The present invention, which has been made to solve the above-mentioned problems, is a PP cap bottle mouth in which a bead is formed in the lower part of the thread, and a step is formed in the middle of the thread. Make a difference and adjust the width and height of the screw thread above the step
Smaller than the step width and the thread of the lower than the step
It is characterized in that the height is made larger than the step .

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. In FIG. 1, 1 is a continuous spiral thread formed on the mouth of a glass bottle, and 2 is a bead formed on the lower part thereof. In the present invention, this screw thread 1
Has a step 3 in the middle thereof, and the width and height of the screw thread 1 above the step 3 are smaller than the step .
The width and height of the screw thread 1 below the step 3 is referred to as the step.
It is formed to be much larger .

It is preferable that the position of the step 3 is approximately at an intermediate portion within the range of 180 to 360 ° from the starting point of the upper end of the screw thread 1. The difference between the outer diameter A of the screw thread 1 above the step 3 and the outer diameter B of the screw thread 1 below the step 3 is 1 mm in the embodiment. Therefore, in this case, the step 3 is 0.5 m.
m. It is suitable that the step 3 is about 0.2 to 1.0 mm.

[0008]

The PP cap bottle thus constructed is covered with an aluminum PP cap as in the conventional case, and the side surface of the PP cap is wound by the roller of the stoppering machine and screwed as shown in FIG. And a lower end of the PP cap is fastened under the bead 2.

When the consumer tries to rotate the PP cap in the correct direction, the screw of the PP cap formed by the thick portion of the screw thread 1 passes through the thin portion of the screw thread 1 above the step 3. Therefore, this step does not become a resistance, and the PP cap can be easily opened without the need for an extra large torque when opening.
If the PP cap is mistakenly rotated in the opposite direction, the PP formed by the thin portion of the screw thread 1
Since the screw of the cap cuts into the thick portion of the screw thread 1 below the step 3, a large resistance occurs. Therefore, the PP cap is prevented from rotating in the opposite direction, and there is no possibility of causing "thread blurring" as in the conventional case.

[0010]

As described above, according to the present invention, the torque required to open the PP cap is reduced, and when the cap is rotated in the opposite direction, a large resistance is generated. It is possible to prevent such "thread blurring". Further, the bottle cap for PP cap of the present invention can be easily manufactured only by modifying the die for glass molding. Therefore, the present invention solves the conventional problems
As a bottle cap for P cap, its practical value is extremely large.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a plan view in which only a cap is cut away.

[Explanation of symbols]

 1 screw thread 2 bead 3 step

Claims (1)

[Scope of utility model registration request] 1. A PP having a bead formed at a lower portion of a screw thread.
In the cap bottle mouth, a step is provided in the middle part of the screw thread, and the width and height of the screw thread above the step are defined as the step.
Remote small, the width and height of the lower thread than the step
Bottle cap for PP cap, characterized in that it is larger than the step .