JPH063852U - Bottle cap for PP cap - Google Patents

Abstract

(57) [Summary] [Purpose] The torque required to open the cap is small, and when the cap is rotated in the opposite direction, a large resistance is generated. P
Provide bottle cap for P cap. [Structure] A step 3 is provided in the middle of the screw thread 1 formed above the bead 2, and the screw thread 1 above the step 3 is made thin.
The thread 1 below the step 3 is thickened.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bottle cap for a PP cap that is combined with a PP cap (pill fur proof cap).

[0002]

[Prior art]

 In the conventional PP metal cap, the upper part where the screw part of the skirt part is formed and the lower part which becomes the PP band are connected in a perforated shape provided between the cut lines, and the PP cap is opened for opening. When is rotated, only the part above the bridge is pushed up along the thread of the bottle neck, and the bridge is cut so that the ring-shaped part remains in the bottle neck. In this way, the bridge is always cut when it is opened, so there is no risk of it being opened unreasonably before it reaches the consumer's hand, and it is widely used in Western sake bottles. And, as a matter of course, a thread and a bead are formed in the bottle mouth of the above-mentioned glass bottle for the PP cap.

However, 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 the cap threads will be overcome. There is a risk that it will become a “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]

[Problems to be solved by the device]

 The present invention solves the above-mentioned conventional problems, the torque when rotating the cap in the correct direction is low, and it can be easily opened, and when the cap is rotated in the opposite direction, a large resistance occurs. It was completed in order to provide a bottle cap for such a PP cap.

[0005]

[Means for Solving the Problems]

 The present invention, which has been made to solve the above-mentioned problems, provides a PP cap bottle mouth having a bead formed at the lower portion of the thread, and a step is provided in the middle of the thread, and the thread above the step is made thinner. The feature is that the screw thread below the step is thickened.

[0006]

【Example】

 Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments. In FIG. 1, 1 is a continuous spiral thread formed in the mouth of a glass bottle, and 2 is a bead formed in the lower part. In the present invention, a step 3 is provided in the middle of the screw thread 1, the screw thread 1 above the step 3 is made thin, and the screw thread 1 below the step 3 is made thick.

The position of the step 3 is preferably within a range of 180 to 360 ° from the start 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 mm. . It is suitable that the step 3 is about 0.2 to 1.0 mm.

[0008]

[Action]

 As in the conventional case, the PP cap bottle mouth is covered with the aluminum PP cap, and the side surface of the PP cap is wound by the roller of the stoppering machine to form the thread 1 as shown in FIG. A thread along it is formed and the lower end of the PP cap is wound under the bead 2.

When the consumer wants 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 moves the thin portion of the screw thread 1 above the step 3. Since it will pass through, this step does not create 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 screw of the PP cap formed by the thin portion of the screw thread 1 will bite 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]

[Effect of device]

 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, resulting in a "thread thread" as in the conventional case. Blurring can be prevented. Further, the bottle cap for PP cap of the present invention can be easily manufactured only by modifying the mold for glass molding. Therefore, the present invention has extremely great practical value as a PP cap bottle which solves the conventional problems.

[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 of the screw thread,
Bottle cap for PP cap, characterized in that the thread above the step is thin and the thread below the step is thick.