JPS6233713Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to the cut line that is cut when opening a plastic bottle lid that can be sealed at the bottle opening.

(b) Prior Art As shown in Figures 1 and 2, the cut line used to open a conventional plastic bottle lid is a cut line that divides the cut line 2, which is also one side of the cap tongue 1, into the cap 3 and the seal 4. A straight line is carved from the tearing start point 6 to the separation line 5.

At the tearing starting point 6, a notch 7 is provided as shown in Fig. 1 in order to form a peeling piece, or a notch 8 is provided as shown in Fig. 2 in order to reduce the resistance at the beginning of cutting. be.

(c) Problems to be solved by the invention When this conventional bottle lid is capped and sealed on a bottle opening with a straight side, the bottle opening functions as a bottle lid without any problems.

However, the bottle opening shown in Utility Model Publication No. 1983-28119 has a bulging deformed side surface, and the position of the maximum diameter corresponds to the tearing starting point 6 at the bottom of the seal, so the straight cut line 2 When a conventional bottle lid with a 2-inch seal is plugged into a bottle opening of this shape, the seal expands in the circumferential direction, and the tearing along the score line 2 progresses from the tearing start point 6 toward the separation line 5, and the sealing function of the bottle lid is performed. Conventional bottle lids could not be used with this type of bottle opening because of the risk of loss.

(d) Means for solving the problem Therefore, a bent portion 9 in which a tongue-shaped piece 1 is formed is a part of the separation line 5 that bisects the cap 3 and the seal 4 when the plastic bottle lid that can be sealed is opened. A cut line 13 provided with a cut portion 12 is connected from the lower end 11 of the seal to the tongue-like lower side line 10 excluding the portion.

Note that this cut line 13 may be cut out in the shape of a narrow hole up to the tongue-shaped lower side line 10.

The same purpose can also be obtained by connecting the cut line 13 to the tip 15 of the lower line 14, which is the tongue-like lower line 10 extended forward in the direction in which the cut begins, as shown in FIG.

(e) Effect When the bottle lid of this invention is placed over the bottle opening in the above problem and the bottle is capped, the seal 4 portion that engages with the bulging part of the bottle opening is made of plastic and therefore expands in the circumferential direction. The tongue-like lower edge line 10, which is thin in the form of a groove to be formed into the tongue-like piece 1, also extends in the circumferential direction and is not cut.

Then, an elongation stress is also applied to the diagonal separation line 16 that bends from this and forms the tongue-like piece 1, and this groove-like thin part stretches further than other parts, but there is no sign of breakage. The tear line 13 below the tongue-shaped lower side line 10 tears from the tear starting point 6, but it does not proceed in the circumferential direction beyond the connection point 17, so it is stopped here and engaged with the bottle mouth. There is.

(f) Effect of the invention As mentioned above, when the bottle cap of the invention is plugged into the opening of the bottle in question, the cut line 13 connected to the tongue-shaped bottom line 10 at the most extended part and the separation line 16
Since there is no point of tearing at this connection point 17, it will not tear in the upper and lower directions from this point, but the tearing start point 6 when opening is a weak point to reduce the resistance at the beginning of cutting. Because of the shape, when the seal 4 is stretched in the circumferential direction, the tearing progresses from the tearing start point 6 provided at the lower end, and stops at the tongue-like bottom line 10 in the bottle lid of this invention.

Since the conventional bottle lid extends straight to the separation line 5, the tearing progresses to the separation line 5 of the cap and the sealing function is lost.

As described above, this invention has a structure in which the cut line 13 is guided to the separation line 5 of the cap in two stages by using the tongue-like lower edge line 10, so that the above-mentioned problem has been solved.

Note that even if the cut line 13 up to the lower tongue line 10 is made into a narrow hole shape in a state where it is split from the beginning,
Unless an external force is applied, the cleavage will not proceed from the lower tongue line 10 to the upper side.

When the package is opened, this becomes the opening point, and since tearing proceeds in the circumferential direction, tearing can begin with less resistance.

[Brief explanation of the drawing]

Figures 1 and 2 are front views of a conventional plastic bottle lid, Figure 3 is a front view of the bottle opening that caused the problem, and Figures 4 and 5 are front views of the bottle lid of this invention.

Claims (1)

[Scope of utility model registration request] Separation line 5 separating cap 3 and seal 4
In a plastic bottle lid that can be sealed with a tongue-shaped piece 1 of the cap, the tongue-shaped piece 1 is a part of the cap.
The cut line of a plastic bottle lid is characterized in that a cut line 13 engraved from the lower end of the seal is connected to the tongue-shaped lower line 10 excluding the bending point that formed the line, or to the extended lower line 14 thereof.