JP2001063779A - Discharge container - Google Patents

Abstract

(57) [Problem] To provide a discharge container for discharging a liquid in a liquid storage chamber from a discharge port, a valve mechanism is disposed at the discharge port in consideration of hygiene of the liquid content, and the entire discharge container is hermetically sealed. However, the structure for hermetic sealing is complicated, so that it has to be a high-cost discharge container. SOLUTION: In a discharge container for discharging liquid in a liquid storage chamber from a discharge port formed in a discharge port portion, a non-welded portion is partially formed in the discharge port portion, and a film-like member is welded.
The non-welded portion was used as a discharge port.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container for discharging liquids such as cosmetic emulsion, hand cream, foundation, shampoo for shampoo, rinse, liquid toothpaste, mayonnaise, ketchup, glue, paint and the like.

[0002]

2. Description of the Related Art As a discharge container for discharging liquid in a liquid storage chamber from a discharge port, a valve mechanism is disposed in the discharge port in consideration of sanitary aspects of the liquid content, and the entire discharge container is made a closed container. Various are known.

[0003]

However, the above-mentioned prior art has an advantage that it can solve the problem of sanitary contents, but has a complicated structure for hermetic sealing. However, it is inevitable to use a high-cost discharge container.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is directed to a discharge container for discharging liquid in a liquid storage chamber from a discharge port formed in a discharge port. The gist of the present invention is a discharge container characterized in that a non-welded portion is partially formed in the discharge port portion and a film-like member is welded, and the non-welded portion is used as a discharge port.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first example will be described with reference to the accompanying drawings. In FIG. 1, a container body 1 accommodates a soft bag 3 forming a liquid chamber (liquid storage chamber) 2 therein. Directly, container body 1
May be used as the liquid chamber 2, but the use of the soft bag body 3 is an easy means since it shrinks in accordance with the consumption of the contained liquid and can prevent the intrusion of outside air. This soft bag 3
It is attached to the lower peripheral wall surface of the mouth member 4 attached to the opening of the container body 1 by heat sealing or the like so as not to leak liquid. The mouth member 4 has a piston 5 inside.
The illustrated piston 5 has a separate piston body 6 fixed thereto in order to exert a moderate elasticity and secure a large diameter, but may be an integrally molded product.
The piston 5 is provided with a valve 7 that can be opened upward in the drawing. The valve 7 serves as an outlet for the liquid from an inner hole 8 communicating with the liquid chamber 2. A cylinder 10 urged upward by a resilient body 9 is attached to the piston 5 so as to be slidable in a liquid-tight manner. An elastic annular portion 11 provided solely on the outer peripheral wall of the piston body 6 serves as a sealing sliding contact portion with respect to the inner peripheral wall of the inner hole 12 of the cylinder 10. Further, a valve 13 that can be opened upward in the drawing is attached to the cylinder 10 similarly to the valve 7. Valve 13 is
It serves as an outlet for the liquid coming out of the valve 7 to the inner hole 12.

A nozzle body 1 is provided above the cylinder 10.
4 is attached. The illustrated nozzle body 14 includes a nozzle member 15 and a valve 13 provided on the nozzle member 15.
And a film member 17 fixed to the top surface of the nozzle member 15 by thermal welding so as to cover the liquid flow passage 16. A non-welded portion 18 is partially formed on the top surface of the nozzle member 15 adjacent to the liquid flow passage 16. The non-welded portion 18 is formed by a method such as coating or printing a resin having a higher melting point than heat from the material of the nozzle member 15. As a resin for coating or printing, a thermosetting resin such as a urethane resin, an epoxy resin, a polyester resin, and a UV resin is preferable, but another resin may be appropriately selected as long as it has a high melting point. . Further, a non-welded portion 18 may be formed by fixing a different material such as a metal foil plate by a method such as bonding. The non-welded portion 18 can be formed in various other ways. The film member 17 is always in close contact with the top surface of the nozzle member 15,
Although the liquid flow passage 16 is shielded and the nozzle body 14 is sealed, during use, the portion facing the non-welded portion 18 is elastically deformed by the pressure of the discharged liquid. Thus, the shielding of the liquid flow passage 16 is released, and the liquid flow path 16 becomes the discharge port 19 (see FIG. 4).

[0007] Specific examples of the film-like member 17 include a material in which polyethylene is adhered to the lower surface of PET and a material in which PE is attached.
It is preferable to have a two-layer structure such as a structure in which polypropylene is adhered to the lower surface of T. In addition, it has a three-layer structure, such as one in which PET is attached to the upper surface of an aluminum foil and polyethylene is attached to the lower surface, or one in which PET is attached to the upper surface of the aluminum foil and polypropylene is attached to the lower surface. Is also good. Furthermore, PET coated with vinylidene chloride
Polyethylene on the lower surface of PET or PET coated with vinylidene chloride, polypropylene on the lower surface, PET bonded on the lower surface of PET coated with silicon oxide, PET coated with silicon oxide And a PET coated with a hot-melt resin on the lower surface of PET. In short, any material may be used as long as the upper layer or the intermediate layer of the film member has a higher melting point to heat than the lower layer. The rest can be selected appropriately depending on the type of liquid. The material of the lower layer of the film-like member 17 is
It is preferable to use the same material as the material of the nozzle member 15 to be thermally welded.

The film member 17 can be fixed to the nozzle member 15 by a simple method such as fixing with an adhesive. However, depending on the type of liquid, the adhesive and the liquid may be fused. Therefore, it is preferable that the film-like member 17 is fixed by being thermally welded by heating or ultrasonic waves while being placed on the top surface of the nozzle member 15 as described above (see FIGS. 2 and 3). A welding horn for heat welding is usually formed by cutting out a portion corresponding to the non-welded portion on the lower surface of the horn so as to prevent unnecessary heat from being transmitted to the non-welded portion. In the configuration of the example, the amount of heat may be appropriately selected, and the film-shaped member 17 may be welded to the nozzle member 15 by a flat welding horn having no cutout on the lower surface. Since the amount of heat is uniformly transmitted to the entire surface of the film-like member 17, this is an effective means for preventing unnecessary shrinkage and wrinkle deformation of the film-like member to be welded.

Next, an example of use will be described. When the nozzle body 14 is pressed, the cylinder 10 slides downward in the drawing against the resilience of the resilient body 9, and at this time, the valve 13 is opened and the nozzle member 15 is removed from the inner hole 12 of the cylinder 10. The internal pressure is increased by the liquid that has flowed into the liquid flow passage 16 and the film-like member 17 is elastically deformed, the discharge port 19 is expanded, and the liquid is discharged. When the pressing of the nozzle body 14 is released, the film-like member 17 is restored, the liquid flow passage 16 is again blocked, and the cylinder 10 slides upward (returns) by the elastic force of the elastic body 9. Then, at this time, the valve 7 is opened and the liquid flows out from the inner hole 8 of the piston 5 to the inner hole 12 of the cylinder 10, and the next use preparation is made.

Next, a modified example of the first example will be described. The first
The description of the same configuration as the example is omitted. In this modification, the non-welded portion 17a is partially formed on the lower back surface of the film-like member 17. The nozzle member 15 is formed by coating or printing a resin having a higher melting point with respect to heat than the material of the nozzle member 15 and the material of the upper layer of the film member 17. In the state of being placed on the top surface, it is fixed by heat welding by heating or ultrasonic waves, and at the time of use, the non-welded portion 17a is elastically deformed, and the shielding of the liquid flow passage 16 is released and the discharge is performed. The outlet 19 is the same as in the first example (see FIGS. 5 and 6).

According to this modification, when forming the non-welded portion 17a, the member to be coated or printed is in the form of a film, so that it is easy to handle and the forming operation can be performed continuously. Have.

FIGS. 7 to 9 show a second example. The film member 20 is heat-welded at the center of an upper plate 24 having a double bag discharge mechanism 21 therein and a soft bag 23 forming a liquid chamber 22 mounted on the lower surface thereof. A non-welded portion 26 is partially formed adjacent to the liquid flow hole 25 at the center of the upper plate body 24. This non-welded portion 26
Is formed by a method such as coating or printing a resin having a higher melting point with respect to heat than the material of the upper plate body 24. Note that the non-welded portion 26 may be partially formed on the lower back surface of the film-like member 20 as described in the first embodiment.
Same as the example.

The film-shaped member 20 is fixed by being thermally welded by heating, ultrasonic waves, or the like in a state where the film-like member 20 is placed on the liquid circulation hole 25 and the non-welding portion 26 of the upper plate body 24. The film member 20 is always in close contact with the upper surface of the upper plate 24,
Although the liquid flow hole 25 is shielded and sealed,
At the time of use, the portion facing the non-welded portion 26 is elastically deformed, and the shielding of the liquid flow hole 25 is released to form the discharge port portion 27.

Next, an example of use will be described based on the discharge container shown in FIG. In the housing 29 of the discharge container having the lid 28,
A plurality of upper plate bodies 24 each having a soft bag body 23 attached to the lower surface are arranged. When one end of the upper plate 24 is pressed, the double valve discharge mechanism 21 is compressed, and the internal pressure is increased by the liquid discharged to the liquid flow hole 25, so that the film member 2 is pressed.
0 is elastically deformed so that the discharge port 27 is expanded, and the liquid is discharged onto the upper plate body. When the pressing of the upper plate body 24 is released, the film-shaped member 20 is restored, the liquid flow hole 25 is again shielded, and the double valve discharge mechanism 21 is moved back, so that the next use preparation is made. This example is an example of a discharge container in which a discharge port is formed at a substantially central portion of an upper plate body. In addition, the present invention can be applied to various discharge container forms.

[0015]

According to the present invention, there is provided a discharge container for discharging a liquid in a liquid storage chamber from a discharge port formed in a discharge port, wherein a non-welded portion is partially formed in the discharge port to form a film. Since the members are welded and the non-welded part is used as the discharge port, a sanitary closed-type discharge container can be configured with a simple configuration, and
It can be provided at low cost.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing a state before welding of a nozzle body and a film-like member of FIG. 1;

FIG. 3 is a perspective view showing a state after welding of the nozzle body and the film-like member of FIG. 1;

FIG. 4 is an enlarged vertical sectional view of a portion A in FIG. 1;

FIG. 5 is a diagram showing a lower back surface of a film-shaped member of a modified example.

FIG. 6 is a perspective view showing a state before welding a nozzle body and a film-like member of a modified example.

FIG. 7 is a longitudinal sectional view showing a second example.

8 is a perspective view showing a state before welding of the upper plate body and the film-like member of FIG. 7;

FIG. 9 is a perspective view illustrating a state of use.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container main body 2 Liquid chamber (liquid storage chamber) 3 Soft bag 4 Port member 5 Piston 6 Piston 7 Valve 8 Inner hole 9 Repellent body 10 Cylinder 11 Elastic annular part 12 Inner hole 13 Valve 14 Nozzle member 15 Nozzle member Reference Signs List 16 liquid flow path 17 film-like member 17a non-welded part 18 non-welded part 19 discharge port 20 film-like member 21 double-valve discharge mechanism 22 liquid chamber 23 soft bag 24 upper plate 25 liquid circulation hole 26 non-welded part 27 discharge Exit 28 Lid 29 Housing

Claims (3)

[Claims] 1. A discharge container for discharging liquid in a liquid storage chamber from a discharge port formed in a discharge port portion, wherein a non-welded portion is partially formed in the discharge port portion, and a film-like member is welded.
A discharge container wherein the non-welded portion is used as a discharge port. 2. The discharge container according to claim 1, wherein the non-welded portion is formed by coating a resin having a melting point higher than that of a welded portion on a part of the discharge port portion. 3. The discharge container according to claim 1, wherein the non-welded portion is formed by coating a resin having a higher melting point than a welded portion on a part of the film-shaped member.