JPH02269662A - Method of mounting opener cap on opening of container and container with opener cap mounted on opening of container - Google Patents

Abstract

PURPOSE:To prevent a screw from being deformed by a method wherein an opener cap made of hard plastic is provided on a soft plastic container, and the diameter of the opener cap is made smaller than the long diameter of a pole on which the opener cap is screwed. CONSTITUTION:A cap 1 is made of hard plastics and a pole 6 is made of soft plastic. When the cap 1 is screwed downward on the pole 6, the screw of the cap forcibly bites into the pole 6 because the diameter A of the cap 1 is smaller than the long diameter B of the pole 6. When the cap 1 is screwed further, a blade 3 provided at the lower end of the cap 1 cuts the base 7 of the pole 6 off from this top 5 of the container, and an opening 9 is formed. At this time, the cap 1 and pole 6 are united in one piece by the screw 4, and the cap and the pole are removed from a container 8 when the base of the pole is cut off. Thereby, a difficulty in opening the top of the container is avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention aims at stably advancing a screw-on cap for an opening into an opening of an extrusion container containing a fluid.

(b) Conventional technology Originally, the screw provided inside the screw-in cap for opening was screwed into the screw of the protrusion provided on the head of the container to be opened, and this cap was screwed deeper when necessary. Attempts have been made in which a cutting edge at the lower end of the cap cuts between the base of the protrusion and the container head to form an opening for the container.

(c) Problems to be Solved by the Invention In conventional containers of this type, there is a risk that minute errors may occur during the manufacturing process due to the difference in hardness between the screws of the soft plastic container and the screws of the hard plastic cap. In addition, due to aging, there is a very slight change in the shape of the neck.

Therefore, when the cap is screwed into the thread of the protrusion,
The screws could not engage sufficiently, and the screws on the cap climbed onto the screws on the protrusion, and in this state, when the cap was further rotated and pushed down to make the cutting blade work, the protrusion finally occurred. This resulted in a fatal defect in that the column was damaged and the cutting edge at the lower end of the cap could no longer cut between the base of the protruding column and the container head, making it impossible to open the container.

(d) Means for Solving Problems In the present invention, the diameter of the screw in the opening cap made of hard plastic is determined by the major diameter of the protrusion provided on the soft plastic container into which the screw of the opening cap is to be screwed. It was made smaller than the length of .

(E) Effect Since the diameter of the screw of the opening cap is smaller than the long axis of the protrusion of the container, when the cap is screwed into the protrusion, the cap is made of hard plastic and the protrusion is made of soft plastic. Therefore, even if the protrusion is not provided with a thread, the screw of the cap will forcibly bite into the outer surface of the protrusion to form a thread, and the two will be completely engaged, and the cap will When screwed forward, the container head is opened by a cutting edge formed at the lower end of the cap.

(f) Example The cap (1) is made of hard plastic, has a brim shape, and has a cylindrical body (2) hanging therein and an opening cutting edge (3) formed at its lower end.

It is preferable to provide a plurality of cutting edges (3).

In FIG. 1, two are provided symmetrically.

The working blade portions of these cutting blades are formed at the front edge of the cap in the rotating direction.

A screw (4) is provided inside the upper part of the cylinder (2), and the diameter of this screw is represented by (A).

The container is made of soft plastic, and the head (5) has a hollow protrusion (6) in the center that is closed at the upper end.
is provided protrudingly, and the cross section of this protruding pillar is the second. 3. 4.
The one shown in Figure 6 is circular, and its diameter is indicated by (B).

And (A) is made smaller than (B).

This is the most important point in the present invention.

The pillar shown in Figure 7 has a plurality of vertical ridges (10
), the projecting pillar shown in FIG. 8 has a cross section that is almost rectangular, and although not shown, a pillar that has a cross section that is almost elliptical is also used.

For those with vertical ridges, the length between the outer surfaces of opposing ridges (major axis); for those that are rectangular, the length between diagonals (long axis); for ellipsoids (not shown), the length It is essential that the length (major axis) of the shaft is larger than the diameter (A) of the neck 4) in the opening cap.

When the cap (1) is screwed in, the screw (4) of the cap (1) is screwed into and bites into the long-diameter outer surface portion of the protrusion.

In this way, the screw (4) is not screwed into the entire circumference of the outer surface of the protrusion, so that screwing is easily performed.

The external shape of the protrusion is not limited to the above-mentioned one, and the relationship between the thread diameter (A) of the cap and the long diameter (B) of the protrusion (or the diameter if the cross section of the protrusion is circular) is B>A. It would be good if it could be done in such a way that the

First, attach the cylindrical body (2) of the cap (1) to the protrusion (6) of the container.
Place the container (8) on the pillar with the center at the center, and support the container (8) by hand.
When the cap (1) is screwed downward, the screw (4) of the cylindrical body (2) in the cap is screwed into the protrusion (6).

The cap (1) is made of hard plastic, and the protrusion (6) is made of soft plastic. Since the diameter (A) of the cap screw is smaller than the long diameter (B) of the protrusion, the cap screw (4) is shaped like a screw being carved into the protrusion (6) with a die. , it forcibly bites into the pillar. FIG. 2 shows such a situation.

FIG. 3 shows the state in which the cap has been further screwed on. That is, the cutting edge (3) at the lower end of the cap cuts off the root (7) of the protrusion (6) at the container head (5) from the container head, and an opening (9) is formed there.

At this time, the cap (1) is attached to the protrusion (
Once the roots of the spigots are cut, the cap and the spigots can be removed from the container (8). The state is shown in FIG. As shown in FIG. 5, an opening (9) appears in the head of the container (8), and when the container (8) is pressed from the outer surface, the stored items are removed from the opening (9).
) will be pushed out.

The head of the projecting pillar (6) may be attached to the second. (Displayed by chain line) 3
, 4 It is heated and caulked as shown in Figure 4.

Note that (11) represents the items stored in the container.

(G) Effects of the Invention In the methods that have been attempted in the past, in which a screw is provided on a soft plastic protrusion and a hard plastic cap is screwed into this screw, the screw of the cap often does not connect to the protrusion. The screws may come off and climb onto the threads of the protrusion, which can cause the protrusion to break and cause serious problems such as preventing the cap from entering and making it impossible to open the container head. will occur.

By the way, since the configuration of the present invention is as described above, when the small-diameter screw of the cap is screwed into the protrusion of larger diameter, the screw of the cap forcibly bites into the protrusion without strong resistance. Therefore, the cap is tightly screwed onto the post.

By screwing the cap further, the container can be opened quickly at the base of the pillar without any hindrance to the container head, making it possible to use the container at low cost. If the contents stored in this container are medical solutions for emergencies, the power of the present invention will be further increased.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of the cap, and FIG. 2 is a vertical cross-sectional view of the cap screwed into a protrusion protruding from the head of the container. For the sake of clarity, diagonal lines are omitted from the cross-sectional representation of the cap. Figure 3 is a vertical cross-sectional view immediately after screwing the cap deeply to create an opening in the container head, Figure 4 is a vertical cross-sectional view of the cap integrated with the protrusion and separated from the container, and Figure 5 is a vertical cross-sectional view of the cap when it is separated from the container. Longitudinal cross-sectional view of the opened container head, 6th. 7. FIG. 8 is a perspective view showing an embodiment of the protrusion. (1)... Cap, (2)... Hanging tab inside the cap, (3)... Cutting edge for opening, (4)... Screw provided on the cap, (6)... Protrusion. Column, (7)... Root of the protruding column (A) -- Thread diameter of the screw (4), (B)... Major diameter of the protruding column (diameter if the 41i cross section is circular), (9)
..., opening 12th 20th 4th figure 60th 70th 80th

Claims (1)

[Scope of Claims] 1) The diameter of the threaded screw in the hard plastic container opening cap is made smaller than the long diameter of the protrusion into which the cap is screwed in the soft plastic container, and the screw of the cap is A method of forming a container with an opening cap by forcibly screwing it into a projecting post. 2) The diameter of the screw in the hard plastic container opening cap is smaller than the long diameter of the protrusion into which the cap is screwed in the soft plastic container, and the screw of the cap is forcibly screwed into the protrusion. A container with a cap for opening.