JP2001010683A - Liquid ejection container with pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suck a liquid content to the end by making a plurality of swells to form a cross liquid path and attaching a large-sized suction pipe for bringing a lower end of a pump into contact with a flat face. SOLUTION: A base 4 comprises a bottom end peripheral wall 8 and a bottom wall 9 which is slightly curved upward. The center of the bottom wall 9 is a flat face 10, while four swells 12 are made to protrude to surround the flat face 10 and to form a cross liquid passage 11 on the bottom wall 9. A creamy solution is held in a container as a content liquid, and a pump can be activated by pressing a nozzle head 23 to eject the liquid content from a nozzle. At this time, a lower end 25 of a suction pipe 24 of the pump B is held, being surrounded by the swells 12 of the bottom wall 9, and since the liquid path 11 formed among the swells 12 is approximately horizontal although the bottom wall 9 is slightly curved, the content liquid can be sucked to the last, even if there remains only a small amount.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid discharge container, in particular, a pump having a large-diameter suction pipe is attached to a mouth of a container containing a cream-like content liquid, and the content liquid is sucked up from a nozzle. The present invention relates to a liquid dispensing container with a pump for dispensing.

[0002]

2. Description of the Related Art In a liquid dispensing container with a pump, a liquid dispensing container with a pump in which the lower end of a suction pipe of a pump is located at the bottom of a bottom wall so that the contents liquid is completely discharged is conventionally known. More known (for example, Japanese Patent Application Laid-Open No. 10-250)
756, Utility Model Registration No. 2583051).

[0003]

However, Japanese Patent Application Laid-Open No. 10-250756 does not disclose a method of forming a container, but describes a method of forming a container from the peripheral wall of the inclined bottom surface 2 of the container described in the patent. The container in which the support 4 is provided by extending 3) has a problem that it is not efficiently formed by blow molding.

The container described in Utility Model Registration No. 2583051 has a body 4 formed to be thin, and a suction pipe of a pump is intended to be used as a reinforcing member for the body 4 of the container. Since it is formed by direct blow and the stretching effect at the bottom of the container cannot be expected, there has been a problem that the bottom cannot be made thin and the strength is not significantly improved. Further, it is not easy to directly apply the molding technique of a direct blow container to a biaxially stretched blow container.

[0005] On the other hand, in a biaxially stretched blow container, the container bottom usually comprises a grounded bottom end wall and a bottom wall having a curved surface curved upward from the grounded bottom end wall. It is conventionally known to dispose a plurality of reinforcing ribs radially. Since there is a bulge in the center of the bottom wall, in the case of a large-diameter suction pipe, the lower end slides down from the bulge and cannot support the pipe vertically, and holds the pump stably In addition, there is a problem that the liquid cannot be discharged, and the liquid content remaining around the bottom wall cannot be poured out to the end because the lower end of the pipe is above the raised portion at the bottom.

An object of the present invention is to solve the above-mentioned problems, and to provide a liquid dispensing container to which a pump having a large-diameter suction pipe for dispensing creamy contents is attached. The bottom wall is formed substantially flat, and a plurality of ridges are formed around a central portion of the bottom wall with a cruciform liquid passage therebetween, and the lower end of the pump is supported by a cliff on the inner periphery of the ridge. It is an object of the present invention to provide a pump-equipped liquid dispensing container which prevents a pipe from being perturbed and sucks up the content liquid to the end.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a biaxially stretch blow molded PET container having a pump attached to a container mouth as a liquid discharge container with a pump. The bottom includes a bottom end peripheral wall and a bottom wall having a flat surface at the center and a curved surface slightly rising toward the center, and a cross-shaped liquid passage is formed at the bottom wall. A plurality of raised portions are protruded so that the bottom wall is extended and strengthened by the raised portions, and the pump is provided with a large-diameter suction pipe whose lower end abuts on the flat surface. The lower end of the suction pipe is surrounded by the plurality of raised portions to prevent delusion, and to completely suck up the content liquid by the pump.

[0008]

Next, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, A is PE
A container formed by biaxial stretching blow from a preform made of T or another synthetic resin as a material resin, B is a pump attached to the mouth of the container, and C is a cap for attaching the pump.

As shown in FIGS. 2 and 3, the container A contains a creamy cosmetic such as shampoo and rinse as a content liquid and comprises a mouth 1, a shoulder 2, a body 3 and a bottom 4. I have. A screw 5 is screwed into the mouth 1, and a holding ring 6 is provided at the lower end of the mouth, and continues to the shoulder 2. The trunk 3 following the shoulder 2 has an elliptical or circular cross section,
A mark 7 is engraved on the surface.

The bottom portion 4 includes a bottom end peripheral wall 8 and a bottom wall 9 slightly curved upward. The center of the bottom wall 9 is a flat surface 1
As shown in FIG. 4, four raised portions 12 are formed so as to surround the flat surface 10 and form a cross-shaped liquid passage 11 in the bottom wall 9.

Each raised portion 12 rises from the flat surface 10 at an acute angle, has a cliff portion 13 having an arc-shaped cross section, and has a fan-shaped inclined surface 15 inclined from the top 14 toward the bottom end peripheral wall 8. Consists of The raised portion 12 is stretched during molding to improve strength and reinforce the bottom portion 4 as a reinforcing rib.

Next, the pump B and the cap C will be described. The pump B has a well-known configuration, and will be briefly described. As shown in FIG. 5, the pump B has a built-in piston member, and has a cylinder 2 attached to the mounting member 20.
1, a stem 22 having the piston member attached to the lower end thereof
And a nozzle head 23 having a nozzle attached to the upper end of the stem 22, and a suction pipe 24 attached to the cylinder 21.

The suction pipe 24 is made of PE or other synthetic resin. The lower end 25 of the suction pipe 24 is provided with a plurality of cutouts as shown in FIG. The diameter of the suction pipe 24 is large so that the creamy liquid can be easily sucked up, and the suction pipe 24 has such a thickness that the suction pipe 24 is not easily bent.

The cap C is attached to the mounting member 20 together with the cylinder 21 and is screwed to the container opening 1 to seal the inside of the container via packing.

When the pump B is attached to the container A by screwing the cap C, the suction pipe 24 has such a length that the lower end 25 contacts the central flat surface 10 of the bottom wall 9 of the container A. And the lower end 25 of the suction pipe 24 is
It is inserted into the cliffs 13 of the four ridges 12 and is held so as not to move.

Next, the mode of use and the function and effect of the liquid dispensing container with a pump according to the present invention will be described. The container contains a creamy liquid such as a shampoo or a rinse as the content liquid, and the pump can be operated by pressing the nozzle head 23 to discharge the content liquid from the nozzle, as is well known.

At this time, the lower end 25 of the suction pipe 24 of the pump B is held by being surrounded by the raised portion 12 of the bottom wall 9, and the liquid passage 11 formed between the raised portions 12 has a slight bottom wall 9. Since the liquid is almost horizontal only by being curved, it can be sucked up to the end even if the content liquid is low.

[0018]

The present invention has the following effects because it is configured as described above. Since a large-diameter suction pipe is used, a creamy content liquid can be easily poured out. By projecting the raised portion on the bottom wall surface, the lower end of the suction pipe can be prevented from being perturbed, and the suction pipe can be held in a fixed position. The liquid in the container can be sucked up to the end through the passage.

[0019] The container is formed by biaxial stretching blow, and the bottom is provided with a raised portion so as to be thinned, the strength is improved by stretching, and the raised portion serves as a reinforcing rib. As a result, the impact strength at the bottom can be improved.

[Brief description of the drawings]

FIG. 1 is a partially sectional front view of a dispensing container of the present invention.

FIG. 2 is a side view of the container.

FIG. 3 is a bottom view of the container.

FIG. 4 is a perspective view of a container bottom wall.

FIG. 5 is an explanatory diagram of a pump and a cap.

[Explanation of symbols]

 A Container B Pump C Cap 1 Mouth 2 Shoulder 3 Body 4 Bottom 8 Bottom peripheral wall 9 Bottom wall 10 Flat surface 11 Liquid passage 12 Ridge 13 Cliff 14 Top 15 Fan-shaped slope 24 Suction pipe 25 Lower end 26 Suction port

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E014 PA01 PB03 PC03 PC16 PD13 PE11 PF09 3E084 AA04 AA12 AA24 AB01 BA02 DA01 DB12 FA09 GA01 GB01 GB12 GB14 LB02 LC01 LC06 LD22

Claims (1)

[Claims] 1. A biaxially stretch blow molded container having a pump attached to a container mouth, wherein the container bottom has a bottom end peripheral wall, and a bottom wall having a curved surface which rises slightly toward the center. The bottom wall has a plurality of ridges projecting from the bottom wall to form a cross-shaped liquid passage, and the bottom wall is extended and reinforced by the ridges. A large-diameter suction pipe is attached to the flat surface so that the lower end of the suction pipe is surrounded by the plurality of ridges to prevent delusion and completely pump up the liquid content by a pump. A liquid dispensing container with a pump, characterized in that: