JP3163511U - Bottle with cap - Google Patents

Abstract

Provided is a bottle with a cap that does not require troublesome assembly work, does not lose a cap, is not easily broken even when repeatedly opened and closed, is easy to open and close, has high sealing performance, and is suitable for a micro tube. . SOLUTION: A polypropylene bottle 10 and a thermoplastic elastomer cap 20 are integrally formed by two-color molding, and a groove 12 having a semicircular cross section is formed on the inner surface of the bottle 10 slightly lower from an opening 11; The outer surface is a large diameter portion 13. The cap 20 includes a hinge portion 22, a cap body portion 23, and a knob portion 25, and is fitted to the groove 12 on the inner surface of the bottle on the outer surface of the cap body portion 23. A semicircular cross-sectional protrusion 26 is formed. In the cap main body 23, the outer diameter of the flange 24 is the same as the outer diameter of the ring portion 21, and the groove 12 and the protrusion 26 are fitted when the upper end of the flange comes into contact with the upper end of the ring portion. [Selection] Figure 1

Description

The present invention relates to a bottle with a cap, and more particularly, to a bottle with a cap provided with a cap for sealing the inside of the bottle .

Conventionally, as a sample bottle minute capacitance called microtubes, those as shown in FIG. 7 (A) ~ (C) are known (Patent Documents 1 to 3).

Japanese National Patent Publication No. 8-500071 (Figs. 1 and 11) JP-T 9-504690 (FIG. 1) Japanese Patent Laying-Open No. 2008-128776 (FIGS. 1, 4, 10, and 11)

These prior arts include an assembly of a cap member molded separately from a bottle (Patent Document 1), an integral molding of a bottle (Patent Document 2), and a silicone rubber fitting as a packing (Patent Document 3). ).

For this reason, in the integrally molded product, the cap and the bottle are made of the same material, which may cause a problem in sealing performance. There was a problem of becoming.

Therefore, an object of the present invention is to provide a bottle with a cap that does not require an assembling work and has a good sealing property, particularly suitable for a microtube.

The bottle with a cap of the present invention, which has been made to achieve the above object, is one in which a plastic bottle and a thermoplastic elastomer cap are integrally formed by two-color molding, and the following (1) and ( It is characterized by having the configuration of 2).
(1) The bottle has an opening at the upper end and a groove having a semicircular cross section so as to surround the inner surface slightly lowered from the opening in a ring shape, and the outer surface of the portion where the groove is formed has a large diameter portion. It is said that.
(2) The cap is formed at a ring portion fused to a large diameter portion in the vicinity of the opening of the bottle, a hinge portion extending laterally from the ring portion, and a tip of the hinge portion. A cap body portion and a knob portion extending further outward from the cap body portion, and a semicircular cross-sectional protrusion that fits into a ring-shaped groove on the inner surface of the bottle when closed It must be formed to surround the outer surface.

According to the bottle with a cap of the present invention, since the bottle and the cap are integrally formed by two-color molding, no assembly work is required, and the opened cap is connected to the bottle via the ring part and the hinge part. And the cap is not gone. Further, when the cap is closed, the groove on the inner surface of the bottle and the protrusion on the outer surface of the cap main body can be fitted to form a tight sealed state. The cap can be easily opened by picking and pulling the knob with the finger in the closed state. As a result, it can be easily opened and closed repeatedly. And even if it repeats such opening and closing operation, since the cap and the bottle are melted and joined by the two-color molding, the cap does not fall off from the bottle.

Here, the bottle with a cap of the present invention may further include the following configuration.
(3) The cap body portion has a shape like a bowler hat in which the edge of the collar is turned up, and the outer diameter of the collar is the same as the outer diameter of the ring section. It is comprised so that the said groove | channel and protrusion may fit, when the upper end of the said ring part contact | abuts.

  By providing the configuration of (3), the cap is not pushed too much when the cap is closed. Further, in the closed state, the flange and the ring portion have the same outer diameter and there are no gaps or steps, so that the cap is not inadvertently opened.

Moreover, the bottle with a cap of the present invention may further include the following configuration.
(4) The knob portion has a ring shape.

Thereby, even if it is a very small bottle like a micro tube, the cap of the closed state can be easily opened by hooking a thing like a tip of a nail or a small eyelid on a ring.

According to the present invention, it is possible to provide a bottle with a cap that does not require troublesome assembly work, has a good sealing property, does not lose a cap, and is difficult to break even when repeatedly opened and closed, and is easy to open and close. It is also possible to provide an extremely small microtube with high sealing performance.

The bottle with a cap of an Example is shown, (A) is the perspective view seen from the downward direction, (B) is the perspective view seen from the upper part shown in the partial cross section, (C) is seen from the upper direction of the state which closed the cap. FIG. The bottle with a cap of an Example is shown, (A) is a longitudinal cross-sectional view of the state which opened the cap, (B) is a bottom view of a cap main-body part, (C) is a longitudinal cross-sectional view of the state which closed the cap. It is sectional drawing of the metal mold | die for manufacturing the bottle with a cap of an Example. It is explanatory drawing which shows the shaping | molding procedure of the bottle with a cap in an Example. It is a figure which shows the perspective view in the state which opened the cap of the bottle with a cap of a shaping | molding example, a top view, a front view, a left-right side view, and a bottom view. It is a figure which shows the perspective view in the state which closed the cap of the bottle with a cap of a shaping | molding example, a top view, a front view, a left-right side view, and a bottom view. It is explanatory drawing of a prior art.

  Hereinafter, embodiments for carrying out the present invention will be described by way of examples.

As shown in FIGS. 1 and 2, the bottle 1 with a cap according to the embodiment is formed by integrally molding a polypropylene bottle 10 and a thermoplastic elastomer cap 20 by two-color molding.

  The bottle 10 has an opening 11 at the upper end, and a groove 12 having a semicircular cross section is formed so as to surround the inner surface of the bottle 10 slightly lower than the opening 11 in a ring shape. The outer surface of the portion where the groove 12 is formed is a large diameter portion 13.

  The cap 20 is formed on a ring portion 21 fused to the large diameter portion 13 in the vicinity of the opening 11 of the bottle 10, a hinge portion 22 extending laterally from the ring portion 21, and the tip of the hinge portion 22. The cap main body 23 is shaped like a bowler hat with the edges of the collars turned upward, and the ring-shaped knob 25 extending further outward from the collar 24 of the cap main body 23. ing. Further, on the outer surface of the cap main body 23, a protrusion 26 having a semicircular cross section that fits into the ring groove 12 on the inner surface of the bottle is formed so as to surround it. The outer diameter of the flange 24 is the same as the outer diameter of the ring portion 21. Further, the groove 12 and the protrusion 26 are configured to be fitted when the upper end of the flange 24 and the upper end of the ring portion 21 come into contact with each other.

  The two-color molding die 30 is composed of a fixed die 40 and a movable die 50 as shown in FIG. Bottle cavities 41 and 42 corresponding to the outer surface shape of the bottle 10 are formed in the fixed mold 40. At the bottom of one bottle cavity 41, a primary resin injection port 43 for injecting the primary molding resin is provided. A hot runner mechanism is used for the primary resin injection port 43. The other bottle cavity 42 is for receiving a primary molded product during secondary molding, and is not provided with a resin injection port.

  In the movable mold 50, bottle cores 51, 52 corresponding to the inner surface shape of the bottle 10 are projected at positions corresponding to the bottle cavities 41, 42 of the fixed mold 40, and the cores 51, 52 are provided. On the other hand, the cap body part cavities 53 and 54 corresponding to the outer surface shape of the cap body part 23 are formed so as to be located on the mold center side.

  In the fixed die 40, cap main body cores 44 and 45 corresponding to the inner surface shape of the cap main body portion 23 are projected from positions corresponding to the cap main body cavities 53 and 54 of the movable die 50.

  Also, hinge cavities 61 and 62, ring cavities 63 and 64, and knob cavities 65 and 66 are formed on the mating surfaces of the fixed mold 40 and the movable mold 50.

  Tunnel gates 46 and 47 serving as secondary resin injection ports are formed on the outer portions of the ring portion cavities 63 and 64.

  As shown in FIG. 4, the molding procedure is to mold the bottle 10 by injecting polypropylene resin from the primary injection port 43 with the mold closed, and after closing the mold, rotate the movable mold 50 180 degrees, and then close the mold. A thermoplastic elastomer is injected through a tunnel gate. Then, after the mold is opened, the product is taken out by protruding.

  Next, as a molding example, polypropylene resin (Prime Polymer Co., Ltd., trade name; Prime Polypro) is used as the primary injection material, and thermoplastic elastomer (AES Japan Co., Ltd., trade name) as the secondary injection material; A microtube having a capacity of 0.136 ml was manufactured by two-color molding. In this molded product, FIG. 5 shows a state where the cap is opened, and FIG. 6 shows a state where the cap is closed.

  When this molded product was closed, the protrusion 26 on the cap 20 side was firmly fitted into the groove 12 on the bottle 10 side, and a suitable sealed state could be maintained. Further, even when opening and closing was repeated many times, this sealing property was not impaired, and the hinge part 22 and the ring part 21 were not damaged. Moreover, since the knob | pick part 25 protrudes largely and is a ring, operation which opens a cap is very easy.

  In particular, since the upper end of the flange 24 and the upper end of the ring portion 21 are in contact with each other, the cap 12 is not pushed too much when the cap 20 is closed, and the groove 12 and the protrusion 26 can be fitted exactly. Further, in the closed state, the flange 24 and the ring portion 21 have the same outer diameter and no gaps or steps, so that the cap 20 is not inadvertently opened.

In addition, since the knob 25 has a ring shape, even a micro bottle such as a micro tube can easily close a cap by hooking a ring-like object such as a tip of a nail or a small hook on the ring. Can be opened.

And according to this embodiment, it is possible to provide a bottle with a cap that does not require troublesome assembly work, has good sealing properties, does not lose a cap, and is difficult to break even when repeatedly opened and closed. It is also possible to provide an extremely small microtube that is easy to peel off and has a high sealing property.

  Although one embodiment for carrying out the invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the scope of the invention.

  Suitable for micro tube.

DESCRIPTION OF SYMBOLS 1 ... Bottle with a cap 10 ... Bottle 11 ... Opening 12 ... Groove 13 ... Large diameter part 20 ... Cap 21 ... Ring part 22 ... Hinge part 23 ... Cap body part 24... Collar 25 .. picking part 26... Protrusion 30 .. mold 40 .. mold 40 .. stationary mold 41 and 42 .. bottle cavity 43 .. primary resin injection port 44 45... Cap body core 50... Movable type 51 and 52. Bottle core 53 and 54. Cap body cavity 61 and 62... Hinge cavity 63. 64 ... Cavity for ring part 65,66 ... Cavity for knob part 46,47 ... Tunnel gate

Claims (3)

A container with a cap, wherein a plastic bottle and a thermoplastic elastomer cap are integrally molded by two-color molding and have the following configurations (1) and (2).
(1) The bottle has an opening at the upper end and a groove having a semicircular cross section so as to surround the inner surface slightly lowered from the opening in a ring shape, and the outer surface of the portion where the groove is formed has a large diameter portion. It is said that.
(2) The cap is formed at a ring portion fused to a large diameter portion in the vicinity of the opening of the bottle, a hinge portion extending laterally from the ring portion, and a tip of the hinge portion. A cap body portion and a knob portion extending further outward from the cap body portion, and a semicircular cross-sectional protrusion that fits into a ring-shaped groove on the inner surface of the bottle when closed It must be formed to surround the outer surface. The bottle with a cap according to claim 1, further comprising the following configuration.
(3) The cap body portion has a shape like a bowler hat in which the edge of the collar is turned up, and the outer diameter of the collar is the same as the outer diameter of the ring section. It is comprised so that the said groove | channel and protrusion may fit, when the upper end of the said ring part contact | abuts. The bottle with a cap according to claim 1 or 2, further comprising the following configuration.
(4) The knob portion has a ring shape.