JP5596450B2 - Thin-walled container with dispenser - Google Patents

Description

  The present invention relates to a thin-walled container that is molded by blow molding and dispenses contents such as liquid using a dispenser, and is intended to reduce the overall thickness of the container including the mouth and neck, thereby saving resources and reducing weight. It is intended to be illustrated.

  In recent years, in order to save resources, reduce weight, and reduce waste, there is an increasing number of cases where thin-walled containers such as pouches are used in place of conventional relatively rigid containers. This type of thin-walled container is actively used for refilling products such as detergents and shampoos. In such products, the contents are usually refilled in a separate body, but this refilling operation takes time, especially in the case of viscous liquids such as shampoos. Since it is unavoidable that the liquid is dripping, it is troublesome for consumers.

  There is a method to reduce the complexity of this refilling work, to make effective use of resources, and to reduce the amount of waste, so that the container is thinned and a dispenser is directly attached to the mouth and neck. As a prior art regarding the point, a thin container is known in which a container body is formed of a synthetic resin sheet material, and a thick neck part is integrally formed on the upper end of the container body by heat welding (for example, Patent Document 1).

  The above thin-walled container enables the contents to be poured out by screwing a divider into the neck member, and the contents can be simply replaced by replacing the pump without troublesome refilling work. It was possible to discharge.

  By the way, the conventional container has a structure in which a screw portion is provided on the outer peripheral wall of the neck portion to attach the dispenser, and the attachment portion of the dispenser is screwed and connected thereto, and sufficient rigidity to withstand screwing with the dispenser. In order to ensure the safety of the material used for both mounting parts, the container neck must be thick and the mounting part of the dispenser that engages the threaded part of the neck must be provided with a mounting lid. There is a limit to reducing the amount, and it was difficult to reduce the size in the radial direction.

JP 2001-114274 A

  The subject of this invention exists in the place which proposes the thin wall container with a dispenser which can aim at the diameter reduction of a mounting part while reducing the material used by thinning of the whole container including a mouth neck part.

The above-mentioned problem is solved by the blow-molded thin-walled container according to the present invention. That is, the present invention is provided with a thin container portion that partitions and forms a content filling space, and a container body in which a thin mouth neck portion is integrally formed in the container portion, and is positioned inside the mouth neck portion of the container body. A thin-walled container with a dispenser provided with a dispenser and a dispenser that discharges the contents in the filling space by repeatedly pushing the pressing head part,
A first screw portion is provided on the inner peripheral wall of the neck and neck portion, and a second screw portion is provided on the outer peripheral wall of the cylinder to engage the first screw portion and fix and hold the dispenser in a standing posture. having a thin container with a dispenser, in the outer peripheral wall of the port neck, and the site where the parting line is formed, and providing a rib-shaped convex portion recessing the inner peripheral wall of the mouth neck . Here, the parting line refers to a linear protrusion formed on the outer surface of a molded body (container) corresponding to a mating surface of a molding die used in blow molding or the like.

  By forming a first threaded portion on the inner peripheral wall of the mouth-and-neck portion, forming a second threaded portion that engages with the first threaded portion on the outer peripheral wall of the cylinder of the dispenser, engaging them and screwing together, Since the mouth and neck of the container body is supported by the cylinder from the inside, even if the mouth and neck are thin, the entire container body including the mouth and neck can be thinned without being crushed. Can be realized.

  In addition, since the dispenser can be fixed to the container body without providing the dispenser with a mounting lid (base cap) that covers the mouth and neck of the container body from the outside, the mounting portion can be made compact.

  By providing a convex part on the rib at the part of the outer peripheral wall of the mouth / neck part where the parting line is formed, the inner peripheral wall of the mouth / neck part is recessed, so that the meat reservoir does not protrude, and the first screw part And the engagement of the second screw part is ensured.

It is a fragmentary sectional view of one embodiment of a thin container with a dispenser which is a reference example of the present invention. It is a fragmentary sectional view of other embodiments of a thin container with a dispenser which is a reference example of the present invention. It is the figure which showed other embodiment of the thin container with a dispenser which is a reference example of this invention. It is the figure which showed the state before opening of the container shown in FIG. 3, (a) is a top view, (b) is a side view. It is an external appearance perspective view of the mouth neck part before opening of a container. It is the figure which showed the plane of the mouth neck part shown in FIG. It is an external appearance perspective view (before opening) of the mouth neck part of the thin wall container with a dispenser which is this invention. It is the figure which showed the plane of the mouth neck part shown in FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  The container body constituting the thin-walled container with the dispenser of the present invention and the dispenser attached to the container body may be of any type, but in this embodiment, a dispenser equipped with a pressure head as a dispenser is used as an example. For the container body, a case where a standing type that enables an upright posture is adopted is shown as an example.

1 and 2, reference numeral 1 denotes a container body that can be formed by blow molding. The container body 1 is a thin-walled container 1a that is formed integrally with a thin container 1a that defines a filling space M of contents and a top part of the container 1a, and that has a passage that leads to the filler space M. It has a neck 1b. At the protruding end (upper end) of the mouth-and-neck portion 1b, an annular convex portion 1b ₁ having a radially extending side wall is formed.

  Reference numeral 2 denotes a dispenser for discharging the contents stored in the filling space M. The dispenser 2 includes a syringe 2a having a piston for sucking, pressurizing, and pumping the contents, and a suction pipe that is connected to the suction port of the syringe 2a and sucks the contents in the filling space M into the syringe 2a. 2b and a pressing head 2d that slides the piston in the syringe 2a up and down through the hollow stem 2c and discharges the contents from the nozzle part n by repeating the pushing operation (a pump part is configured). .) The suction pipe 2b has a length enough to reach the bottom wall 1c of the container body 1, and receives a load in the longitudinal direction (axial direction) of the container body 1 applied when the pressing head 2d is pushed. Thus, deformation of the container body 1 is prevented.

  Reference numeral 3 denotes a first screw portion provided on the inner peripheral wall of the thin mouth-neck portion 1b, and reference numeral 4 denotes a second screw portion provided on the outer peripheral wall of the syringe 2a and engageable with the first screw portion. is there. By engaging and screwing the second screw portion 4 provided on the outer peripheral wall of the syringe 2a with the first screw portion 3 of the mouth-and-neck portion 1b, the dispenser 2 is fixed and held on the container body 1 while maintaining the standing posture. When the engagement between the first screw portion 3 and the second screw portion 4 is completed, the hanging portion 3a at the lower end of the first screw portion 3 and the hanging portion 4a at the lower end of the second screw portion 4 are in close contact with each other. Thus, a seal portion is formed to prevent leakage of contents from the accommodating portion 1a. Since the first screw portion 3 is provided on the inner peripheral wall of the thin mouth neck portion 1b, a screw-like shape reflecting the shape of the first screw portion 3 appears on the outer peripheral wall of the mouth neck portion 1b.

Furthermore, 5 is a socket to be fixed is inserted from the upper opening end 2a ₁ of the syringe 2a. The socket 5 prevents the hollow stem 2c from coming off from the syringe 2a and performs sealing, and is located between the hollow stem 2c and the syringe 2a, and forms a main body portion of the socket 5. 5a (the inner surface is in contact with the hollow stem 2c in a slidable state and the outer surface is in contact with the inner wall surface of the syringe 2c in a liquid-tight state), and is integrally connected to the upper end of the seal cylinder 5a and outward ( A flange portion 5b projecting in the horizontal direction) and a double ring body 5c, 5d suspended from the lower end of the flange portion 5b and surrounding the seal ring 5a with a space therebetween. The ring body 5c forms a groove portion 6a that opens downward in cooperation with the flange portion 5b and the seal ring 5a, and the ring body 5d forms a groove portion 6b that opens downward in cooperation with the flange 5b and the ring body 5c. Forming. The upper end of the syringe 2a enters the groove 6a and is engaged with the ring body 5c by an undercut to ensure the connection between the mouth neck 1b and the syringe 2a by screwing, and the groove 6b has the mouth neck 1b. When the annular convex portion 1b ₁ formed at the protruding end of the tube enters and prevents unnecessary damage of the mounting portion that may occur due to the hooking of the mouth-and-neck portion 1b, and when the screwing between the syringe 2a and the mouth-and-neck portion 1b is completed, By suppressing at least two contact points on the convex portion 1b ₁ to deform the mouth-and-neck portion 1b radially outward, the sealed state is maintained and intrusion of moisture and the like from the outside is avoided.

  As shown in the enlarged view of the main part of the mouth-and-neck portion 1b in FIG. 1, the first screw portion 3 is provided on the inner peripheral wall of the mouth-and-neck portion 1b, and is a portion overlapping the mouth-and-neck portion 1b of the syringe 2a. Since the second threaded portion 4 that engages with the first threaded portion 3 is provided on the outer peripheral wall of the upper end portion, the suction pipe 2b of the dispenser 2 is guided into the accommodating portion 1a through the mouth-and-neck portion 1b. By connecting the part 3 with the second screw part 4 by screwing, the dispenser 2 is mounted on the container body 1 until the dispenser 2 maintains the standing posture.

  Further, in the engagement between the first screw portion 3 and the second screw portion 4, the seal cylinder 5a of the socket 5 is slidably brought into contact with the outer peripheral wall of the hollow stem 2c and kept in a liquid-tight state.

FIG. 2 shows another embodiment of a container with a dispenser which is a reference example of the present invention. In this example, of the annular bodies 5c and 5d constituting the socket 5, the annular body 5d is extended to the lower end of the mounting portion (the base portion of the mouth-and-neck portion 1d). By covering the entire mounting portion with the ring 5d in this manner, the mounting portion can be suitably protected, and the portion can be used as a gripping portion of the container, so that the user can easily hold the mounting portion. Further, in such a configuration, it is possible to further ensure the prevention of intrusion of moisture and the like from the mouth / neck portion 1b.

FIG. 3 is a view showing still another embodiment of a thin-walled container with a dispenser which is a reference example of the present invention. In this example, a filling port 1a ₁ for the contents is provided in the center of the bottom wall 1c of the housing part 1a, and after filling the contents, the filling port 1a ₁ is pushed toward the inside of the housing part 1a to flatten the bottom part. In this case, the second screw portion 4 provided on the outer peripheral wall of the syringe 2a is engaged with the first screw portion 3 provided on the inner peripheral wall of the mouth-and-neck portion 1b. Thus, the dispenser 2 can be fixed and held in the container body 1 while maintaining the standing posture, and intrusion of moisture and the like can be prevented by extending the ring body 5d to the base of the mouth-and-neck portion 1d.

As the suction pipe 2b, for example, a bent portion 2b ₁ as shown in the figure is provided so that the lowermost end of the suction pipe 2b is positioned at the corner of the bottom wall of the container body 1, and the container body 1 added when the pressing head 2d is pushed in. It is also possible to provide a support member (such as a U-shaped member) 7 that receives a load in the axial direction of the pipe. In this case, the lowermost end of the pipe is located on the lowermost side of the container body 1. Therefore, there is an advantage that the contents can be used up to the end.

FIGS. 4 (a) and 4 (b) show the plane and side surfaces of the container shown in FIG. 3 before opening. In particular, in the case of applying a container of a type for flattening the bottom by pushing the filling port 1a ₁ toward the inside of the housing portion 1a after filling the contents, the weakened portion is formed on the mouth neck portion 1b of the container body 1. A line (such as a line formed by thinning) can be provided, and a stopper 1d with a pull ring that can be torn off from the weakened portion L can be provided. Can be installed.

  In particular, in this type of container, the accommodating portion 1a including the stopper 1d and the neck portion 1b are integrally formed by blow molding, which enables production with high productivity. As the mold used, a split mold is applied, and a parting line P is formed at a portion corresponding to the mating surface of the mold, as shown in FIG. In some cases, as shown in FIG. 6, an inwardly-projected meat pool portion 8 is formed, which inhibits the engagement between the first screw portion 3 and the second screw portion 4. (When the dispenser 2 is mounted, the second screw portion 4 rides on the first screw portion 3 in the meat accumulation portion 8 and feels like a small amount of screw engagement, resulting in idle rotation. ).

In order to eliminate such a concern, in the present invention, a recess is formed in the inner peripheral wall of the mouth / neck portion 1b where the parting line P is formed (on the parting line P) as shown in FIG. Thus, the rib-shaped convex part 9 which protrudes toward a radial direction outer side shall be provided . According to this, as shown in FIG. 8, even if the meat reservoir 8 is formed during the molding of the container, the meat reservoir 8 does not protrude inward, so the first screw portion 3, Engagement with the second screw portion 4 is ensured, and the empty space of the screw due to the rise of the meat pool portion 8 does not occur.

  The first threaded portion 3 provided on the thin neck portion 1b is formed together with the container body 1 at the time of blow molding, and the thickness of the portion is set in the range of 0.5 to 0.6 mm. In addition, the thickness of the body portion (accommodating portion 1a) of the container body 1 is preferably 200 to 600 μm, and more preferably 500 to 600 μm from the viewpoint of blow suitability.

  Thus, according to the thin-walled container with a dispenser of the present invention, it is possible to realize the weight reduction of the entire container by configuring the mounting portion with a small amount of material, and at the same time, to reduce the diameter of the mounting portion.

  In particular, in the case of applying a pop-up type container in which a filling port is provided at the bottom of the container body and the filling port is pushed inward toward the inside of the container body after filling the contents, the neck and neck portion and the plug body are connected. Since it can be integrally formed, the material used for the container can be further reduced, and the container can be easily opened, so that the dispenser can be replaced efficiently.

DESCRIPTION OF SYMBOLS 1 Container main body 1a Accommodating part 1b Mouth neck part 1c Bottom wall 1d Plug body 2 Dispenser 2a Syringe 2b Suction pipe 2c Hollow stem 2d Press head 3 1st screw part 4 2nd screw part 5 Socket 5a Seal cylinder 5b Flange part 5c Ring body 5d Ring body 6a Groove portion 6b Groove portion 7 Support member 8 Reservoir portion 9 Protruding portion M Filling space n Nozzle portion P Parting line

Claims (1)

A container body having a thin-walled container formed integrally with a thin-walled mouth and neck in the container, and a syringe positioned inside the mouth-and-neck of the container body; A thin-walled container with a dispenser comprising a dispenser that discharges the contents in the filling space by repeatedly pushing the pressing head part,
A first screw portion is provided on the inner peripheral wall of the mouth-and-neck portion, and a second screw portion is provided on the outer peripheral wall of the syringe to engage the first screw portion and fix and hold the dispenser in a standing posture .
A thin-walled container with a dispenser, characterized in that a rib-like convex part for recessing the inner peripheral wall of the mouth-neck part is provided on a part where the parting line is formed on the outer peripheral wall of the mouth-neck part .

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