JP2011111183A - Thin-walled container made of synthetic resin with dispenser - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To seal the tip of a filler projecting from a bottom wall to make it to be a tail, and to bring the tip of a suction pipe inserted through an opening into contact with a part formed by the tail. <P>SOLUTION: A thin-walled container made of a synthetic resin with a dispenser includes: the thin-walled container 10 made of the synthetic resin which has a side wall 14 and a bottom wall 15 and in which a filling space R for a content liquid is formed inside thereof; and the dispenser 20 having a suction pipe 23 and mounted on an opening. On the bottom wall 15, an annular grounding wall 15a is formed, and an expanding wall 15c is formed from the inner edge 15b of this grounding wall 15a. A filler 15d formed of an opening communicating with a filling space R as a cylindrical wall, and a projection 15f orientating outward obliquely downward direction from the expanding wall 15c so as to opposing this are formed. There exists a bending E turning reversely by sealing the tip 15d, and pushing the narrowed tail 15d using the sealer 15s as a top point or the projection 15f into a space R. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention attaches a dispenser such as a pump to the mouth of a thin container formed by pushing the tail part formed by closely contacting the tip of the cylindrical wall forming the filling part into the filling space of the content liquid, The present invention relates to a synthetic resin thin container with a dispenser in which a suction pipe is inserted into a filling space through a mouth portion.

  In the synthetic resin container thinned for the purpose of resource saving and efficient recovery, a part of the bottom wall protrudes into a cylindrical shape, and after filling the content liquid through this filling part, A tail portion is formed by sealing the tip, and the tail portion is pushed into a filling space to form a thin container (see, for example, “Patent Document 1”).

JP 2008-273542 A (FIG. 8)

  If a dispenser is attached to the mouth of such a thin container, the suction pipe suspended from the dispenser is inserted into the filling space through the mouth, so that the liquid content can be ejected to the outside.

  However, in the thin container with a dispenser adopting the conventional thin container described above, the tail portion is pushed right above the container axis, so that the tip of the suction pipe is formed in the portion formed by pushing the tail portion. May come into contact.

  As a method for avoiding such contact, for example, it is conceivable to shorten the suction pipe. However, if the suction pipe is shortened, there is a problem that the content liquid corresponding to the height cannot be sucked.

  On the other hand, it is conceivable to adopt a flexible suction pipe, but in this case, since the part formed by pushing is detoured by the deformation of the suction pipe, the assembly work is complicated. There is a problem of becoming. Further, when a suction pipe bent in advance is employed, the suction pipe is a bent pipe, so that it is difficult to insert the suction pipe through the mouth, and the problem of the assembling work cannot be solved. In addition, there is room for improvement in cost control by using bent pipes.

  The problem to be solved by the present invention is a thin container made of a synthetic resin in which the tip of a filling portion protruding as a part of the bottom wall is sealed to form a tail portion, and then the tail portion is pushed into the filling space. When the dispenser is mounted, the tip of the suction pipe inserted through the mouth portion is in contact with the portion formed by pushing the tail portion.

The synthetic resin thin-walled container with a dispenser according to the present invention has a side wall and a bottom wall, and a thin-walled container made of synthetic resin in which a content liquid filling space is formed inside thereof,
With a dispenser that has a suction pipe inserted into the filling space through the mouth of the thin-walled container and is attached to the mouth,
An annular ground wall surrounding the container axis is formed on the bottom wall, and a bulging wall that bulges while shrinking downward along the container axis from the inner edge of the ground wall is formed. And
Further, the bulging wall is a cylindrical wall that is directed outward and obliquely downward with respect to the container axis, and is bulged in the filling space in which an opening leading to the filling space is formed inside the cylindrical wall. A filling part that can be pushed together with the wall, and a protruding part that can be pushed into the filling space together with the bulging wall, directed outward and obliquely downward from the bulging wall so as to face the filling part, are formed,
When the projecting portion is pushed into the filling space together with the bulging wall, a flat wall that forms a part of the grounding wall and is located immediately below the tip of the suction pipe, and an inclined wall that is connected at an obtuse angle with the flat wall. Have
The filling portion forms a tapered tail portion that apex the sealing portion by sealing its tip,
Between the tail part and the projecting part, there is a bent part that is reversed by pushing the tail part or projecting part together with the bulging wall into the filling space, and the sealing part of the tail part together with the bulging wall is more than the grounding wall. And a connecting wall for positioning so that the flat wall of the protruding portion becomes a grounding wall.

  The tail portion and the flat wall may be connected to the inner edge of the grounding wall so as to be bendable from the inner edge as a base point.

  According to the present invention, as before, after filling the content liquid from the filling portion, the tip of the filling portion is sealed to form a tapered tail portion having the sealing portion as a vertex, If the tail portion or the protruding portion is pushed into the filling space together with the bulging wall, a thin container having an annular grounding wall surrounding the bulging wall can be formed.

  In addition, in the present invention, the bending direction of the bent portion related to the connecting wall connecting the tail portion and the protruding portion is reversed by pushing the tail portion or the protruding portion into the filling space together with the protruding wall. The sealing part of the tail part is positioned at a height higher than the grounding wall together with the outlet wall, and the flat wall of the projecting part is positioned so as to be positioned directly below the tip of the suction pipe as a part of the grounding wall. .

  Moreover, in the present invention, since the inclined wall connected to the flat wall is connected to the flat wall at an obtuse angle, the protrusion is pushed so that the flat wall of the protrusion is positioned directly below the tip of the suction pipe. In this case, since the inclined wall is inclined away from the suction pipe, the inclined wall does not come into contact with the suction pipe.

  That is, according to the present invention, even if the suction pipe is inserted straight along the container axis, the tip of the suction pipe is not in contact with the pushing portion of the tail portion, and the tip of the suction pipe is part of the ground wall. Can be positioned directly below the flat wall. Thereby, the content liquid in the filling space can be sucked as much as possible through the suction pipe even when a dispenser having an existing straight suction pipe is adopted.

  Therefore, according to the present invention, the content liquid can be efficiently ejected without impairing the assembly workability and cost.

  Further, if the tail portion and the flat wall are connected to the inner edge of the ground wall so that the inner edge can be bent, the tail portion and the flat wall are restrained together with the bulging wall with respect to the annular ground wall. By pushing the part and the flat wall together with the bulging wall, it can be positioned at a desired position with higher accuracy. Thereby, the contact of the suction pipe with the pushing portion of the tail portion can be avoided by an easy assembling operation.

It is a side view which shows the synthetic resin thin-walled container with a dispenser which is one form of this invention in a partial cross section. It is a front view which shows the same form in a partial cross section. (a), (b) is the principal part perspective view which shows the state of the bottom part side of the same form, respectively, and the principal part perspective view which shows the state of the bottom part side before content liquid filling based on the same form. It is a side view which shows the synthetic resin thin-walled container employ | adopted as the form.

  Hereinafter, a synthetic resin thin container with a dispenser, which is an embodiment of the present invention, will be described in detail with reference to the drawings.

  Reference numeral 10 denotes a thin container made of synthetic resin such as PET. As shown in FIG. 4, the thin-walled container 10 is a standing blow bottle in which the stopper 12 is integrally formed with the mouth portion 11. The mouth portion 11 and the plug 12 are connected via a thin portion 13. A pull ring 12 a is integrally formed with the plug body 12. Accordingly, when a finger is pulled through the pull ring 12a, the thin portion 13 is cut, whereby a later-described dispenser 20 can be attached to the mouth portion 11.

As shown in FIG. 1, the dispenser 20 has a cap 22 that fixes the cylinder 21 in the filling space R through the inside of the mouth portion 11. The cap 22 is attached by being screwed to the mouth portion 11. A suction pipe 23 for sucking the content liquid is connected to the cylinder 21 from an opening A ₀ formed at the lower end of the cylinder 21.

The dispenser 20 has a nozzle head 24 that drives a piston (not shown) disposed in the cylinder 21 by repeatedly pressing down and returning the dispenser 20. Thereby, the dispenser 20 sucks the liquid in the filling space R into the cylinder 21 through the suction port A ₁ formed at the tip 23a of the suction pipe 23 by repeatedly pressing down the nozzle head 24 and returning it. By pumping the content through the stem 25 to the nozzle head 24, the content liquid filled in the thin container 10 can be ejected from the spout A ₂ of the nozzle 26.

  Moreover, the thin container 10 has the side wall 14 and the bottom wall 15 which are connected to the opening part 11, and the filling space R of the content liquid is formed in the inside. As shown in FIG. 3B, an annular ground wall 15a surrounding the container axis O is formed on the bottom wall 15, and as shown by a two-dot chain line in FIG. 2, the inner edge of the ground wall 15a is formed. A bulging wall 15c that bulges while being reduced in diameter downward from 15b along the container axis O is formed.

  The bulging wall 15c can be reversed from the inner edge 15b of the ground wall 15a as a starting point, as shown by the solid line in FIGS. Further, as shown by a two-dot chain line in FIG. 1, the bulging wall 15 c is formed with a filling portion 15 d that projects obliquely downward with respect to the container axis O and protrudes outward.

As shown in FIG. 1 and the like, the filling portion 15d protrudes obliquely downward from the bulging wall 15c in the long-width direction (in this embodiment, the rearward direction as shown in the figure), and is shown in FIG. 3 (b). Thus, it becomes a cylindrical wall. An opening A ₃ communicating with the filling space R is formed inside the filling portion 15d. Thus, as shown in FIG. 4, be molded integrally with the mouth portion 11 a cleavable plug 12, it can be filled with content liquid from the opening A _3.

The tip 15d ₁ of the filling portion 15d can be overlapped with each other as shown by the arrow in FIG. The tips 15d ₁ superimposed on each other are brought into close contact with each other by heating or the like. As a result, the tip 15d ₁ becomes a sealing part (seal part) 15s that seals the opening A, and the filling part 15d apex the sealing part 15s as shown in FIG. It is formed as a tapered tail portion (hereinafter, “filling portion” and “tail portion” are synonymous).

  Further, as shown in FIG. 3A, the filling portion 15d is connected to the inner edge 15b of the ground wall 15a so as to be bendable from the inner edge 15b toward the filling space R side. As a result, the tail portion 15d has the inner edge 15b as shown by the solid line in FIGS. 1 and 2, or as shown in FIG. Can be pushed into the filling space R.

In addition, as shown by the two-dot chain line in FIG. 1, the bulging wall 15c is directed outwardly obliquely downward from the bulging wall 15c so as to face the filling portion 15d in the long width (front-rear) direction. A protruding portion 15f protruding in the direction is formed. Protrusion 15f forms a flat ground wall by the inverse of the bulging walls 15c, having a flat wall 15f _1. Further, the projecting portion 15f has an inclined wall 15f ₂ connected to the flat wall 15f ₁ at an obtuse angle θ. Furthermore, the protrusion 15f has two side walls 15f ₃ that connect the flat wall 15f ₁ and the inclined wall 15f ₂ to the bulging wall 15c.

The two side walls 15f ₃ are also connected to the base point so that they can be bent starting from the inner edge 15b of the ground wall 15a. As a result, the protruding portion 15f also has the inner edge 15b starting from the inner edge 15b of the grounding wall 15a together with the bulging wall 15c, as shown by the solid line in FIGS. 1 and 2, or as shown in FIG. Can be pushed into the filling space R.

Between the tail portion 15d and the protrusion 15f, the connecting wall 15g is provided for connecting the tail portion 15d and the inclined wall 15f _2. The connecting wall 15g is formed with a bent portion E extending in the lateral direction. As shown in FIG. 1, the bent portion E reverses the direction of the bent portion by pushing the tail portion 15d or the protruding portion 15f into the filling space R together with the bulging wall 15c.

Accordingly, when at least one of the tail portion 15d and the protruding portion 15f is pushed into the filling space R together with the bulging wall 15c, the tail portion 15d is positioned so that the sealing portion 15s is higher than the ground wall 15a. In addition, the flat wall 15f ₁ of the projecting portion 15f is positioned so as to form a part of the grounding wall 15a.

As shown in FIG. 1, the flat wall 15f ₁ is positioned immediately below the tip 23a of the suction pipe 23 when the protruding portion 15f is positioned by pressing together with the bulging wall 15c. In addition, since the inclined wall 15f ₂ is connected to the flat wall 15f ₁ at an obtuse angle, when the projecting portion 15f is positioned together with the bulging wall 15c by pressing, as shown in FIG. It inclines so that it may distance from the suction pipe 23 as it goes upwards.

According to this embodiment, as before, after filling the content liquid from the filling portion 15d in the state shown in FIG. 3B, the tip 15d ₁ of the filling portion 15d is moved as shown by the two-dot chain line in FIG. By forming a tapered tail portion 15d having the sealing portion 15s as a vertex by sealing, the tail portion 15d or the projecting portion 15f together with the bulging wall 15c fills the filling space as shown by the solid line in FIG. When pushed into R, as shown in FIG. 3 (a), a thin container 10 having an annular ground wall 15a surrounding the bulging wall 15c can be formed.

In addition, in this embodiment, the tail portion 15d or the protruding portion 15f is pushed into the filling space R together with the bulging wall 15c, so that the bent portion E of the connecting wall 15g that connects the tail portion 15d and the protruding portion 15f is connected. Since the bending direction is reversed as shown by the solid line in FIG. 1, the sealing portion 15s of the tail portion 15d is positioned at a height higher than the ground wall 15a together with the bulging wall 15c, as shown in FIG. flat wall 15f ₁ parts 15f are positioned so as to be located just below the tip 23a of the suction pipe 23 forms part of the ground wall 15a.

Moreover, in this embodiment, since the inclined wall 15f ₂ that leads to the flat wall 15f ₁ connected to form the flat wall 15f ₁ and obtuse theta, that the protrusion 15f is pressed, flat wall 15f ₁ of the protrusion 15f is Also when positioned so as to be directly below the tip 23a of the suction pipe 23, the inclined wall 15f ₂ is inclined away from the suction pipe 23 as shown by the solid line in FIG. There is nothing.

That is, according to the present embodiment, even if the suction pipe 23 is inserted straight along the container axis O, the tip 23a of the suction pipe 23 does not come into contact with the pushing portion of the tail portion 15d. 23a to can be positioned directly below the flat wall 15f ₁ forming a part of the ground wall 15a. Thereby, the content liquid in the filling space R can be sucked as much as possible through the suction pipe 23 even when a dispenser including the existing straight suction pipe 23 is adopted.

Therefore, according to this embodiment, the content liquid can be efficiently ejected without impairing the assembling workability and cost. Incidentally, according to the present invention, when pushed into the filling space R protrusions 15f with bulging walls 15c, a portion of the ground wall 15a located just below the tip 23a of the flat wall 15f ₁ is the suction pipe 23 By doing so, since the same shape as the conventional container bottom can be maintained, the remaining amount can be reduced.

Also, as in the present embodiment, the tail portion 15d and the flat wall 15f _1, the inner edge 15b of the ground walls 15a, if foldably connected to the inner edge 15b as a base point, the tail portion 15d and the flat wall 15f ₁ is bulging wall because it is constrained against the annular grounding wall 15a with 15c, it is possible to position the tail portion 15d and the flat wall 15f ₁ by pushing with bulging walls 15c, a desired position with high accuracy. Thereby, the contact of the suction pipe 23 with the pushing portion of the tail portion 15d can be avoided by an easy assembling operation.

  The above description is merely an embodiment of the present invention, and various design changes can be made according to the use of the thin-walled dispensing container.

  The present invention can be applied as a container filled as a content liquid such as shampoo, rinse, liquid soap, cosmetics and the like.

10 Thin-walled container made of synthetic resin (standing blow bottle)
11 mouth part 12 plug body 12a pull ring 13 thin part (cutting part)
14 Side wall 15 Bottom wall 15d Tail portion 15f Projection portion 15f ₁ Flat wall 15f ₂ Inclined wall 15f ₃ Side wall 20 Dispenser 21 Cylinder 22 Cap 23 Suction pipe 24 Nozzle head 25 Stem 26 Nozzle A ₀ Cylinder opening A ₁ Suction port A ₂ Spout E E Bent part

Claims (2)

A thin-walled container made of a synthetic resin having a side wall and a bottom wall and in which a filling space for the content liquid is formed;
With a dispenser that has a suction pipe inserted into the filling space through the mouth of the thin-walled container and is attached to the mouth,
An annular ground wall surrounding the container axis is formed on the bottom wall, and a bulging wall that bulges while shrinking downward along the container axis from the inner edge of the ground wall is formed. And
Further, the bulging wall is a cylindrical wall that is directed outward and obliquely downward with respect to the container axis, and is bulged in the filling space in which an opening leading to the filling space is formed inside the cylindrical wall. A filling part that can be pushed together with the wall, and a protruding part that can be pushed into the filling space together with the bulging wall, directed outward and obliquely downward from the bulging wall so as to face the filling part, are formed,
When the projecting portion is pushed into the filling space together with the bulging wall, a flat wall that forms a part of the grounding wall and is located immediately below the tip of the suction pipe, and an inclined wall that is connected at an obtuse angle with the flat wall. Have
The filling portion forms a tapered tail portion that apex the sealing portion by sealing its tip,
Between the tail part and the projecting part, there is a bent part that is reversed by pushing the tail part or projecting part together with the bulging wall into the filling space, and the sealing part of the tail part together with the bulging wall is more than the grounding wall. A synthetic resin thin-walled container with a dispenser, characterized in that a connecting wall for positioning so that the flat wall of the protruding portion becomes a ground wall is provided.   The synthetic resin thin-walled container with a dispenser according to claim 1, wherein the tail portion and the flat wall are connected to the inner edge of the ground wall so as to be bendable from the inner edge as a base point.

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