JP2015145257A - Ejection prevention container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ejection prevention container which prevents a squeeze container from being made dirty or hands from being made dirty unnecessarily by unexpected ejection of a content in the case when a cap is opened when using the squeeze container.SOLUTION: In the ejection prevention container for the squeeze container, a cap 10 is mounted to a squeeze-deformable container 1 in which a mouth cylindrical part 5 is erected in an upper end of a trunk 3 via a shoulder 4 and the content is discharged from a discharge hole 7 communicating with the mouth cylindrical part 5 by squeeze deformation of the trunk 3. A cross section in at least a portion of the container has an incomplete round shape, and the cap 10 is formed from an outer cap 11 that is fitted to the mouth cylindrical part 5, and an inner cap 12 that is assembled with the outer cap 11. After sealing of the discharge hole 7 is started when closing the cap, the inner cap 12 deforms a portion of the container 1 by abutting a projected rib 20 from a side face of the container 1. Even after the discharge hole 7 is unsealed when opening the cap, a portion of the container 1 is being deformed by the projected rib 20 until the projected rib 20 is separated from the side face of the container 1.

Description

  The present invention relates to a squeeze container, which uses a non-circular cross-sectional shape of the container when the cap is closed to reduce the pressure inside the container and prevents the contents from being discharged when the cap is opened. It relates to a prevention container.

  In the squeeze container, when the contents contained in the container are discharged, the container is deformed and its internal volume is reduced by squeezing (elastically deforming) the container. Along with this volumetric deformation, the internal pressure of the container becomes a positive pressure, and the content stored in the container is discharged from the discharge port by a predetermined amount by this positive pressure.

  As such a squeeze container, for example, Patent Document 1 discloses a container in which contents are returned into a container body when a cap is fitted and closed. However, if the cap is opened when the internal pressure of the container main body is increased due to an increase in environmental temperature or unintentional pressure on the container main body, the contents may be ejected from the discharge port. Such unexpected ejection of contents causes factors such as dirt on the appearance of the squeeze container and hand dirt during use, and therefore, there has been an increasing demand for a container to be ejected.

JP 2007-55662 A

  The present invention has been made in view of such circumstances. The purpose of the present invention is to prevent the squeeze container from becoming dirty and unnecessary hands from being ejected unexpectedly when the cap is opened when the squeeze container is used. An object of the present invention is to provide an ejection prevention container that does not generate dirt.

As a means for solving the above problems, the ejection preventing container of the present invention is
A cap is attached to a container made of a squeeze-deformable synthetic resin material having a mouth tube portion standing upright at the upper end of the body portion via a shoulder portion, and the mouth tube at the upper end of the mouth tube portion is formed by squeeze deformation of the body portion. A squeeze container for a squeeze container that discharges contents from a discharge hole communicating with a section,
The cross section of at least a portion of the container has a non-circular shape;
The cap includes an outer cap that fits into the mouth tube portion and an inner cap that is assembled to the outer cap.
After the sealing of the discharge hole when the cap is closed, the inner cap deforms a part of the container by contacting the convex rib from the side surface of the container,
Even after the discharge hole seal is opened when the cap is opened, a part of the container is deformed by the convex rib until the convex rib is detached from the side surface of the container.
Is.

  According to this configuration, after the discharge hole is sealed when the cap is closed, the inner cap deforms a part of the container by contacting the convex rib from the side surface of the container having a non-circular cross-sectional shape. A deformation occurs in which the portion approaches the circular cross-sectional shape from the non-true circular cross-sectional shape. Due to the deformation approaching the circular cross-sectional shape after the start of sealing of the discharge hole, the inner volume of the container is increased, whereby the inside of the container is in a reduced pressure state. Thus, when the cap is opened, a force for sucking the contents into the container acts, and the contents can be prevented from being ejected.

  Further, in the ejection preventing container according to the present invention, when the container cap is closed or the cap is opened, the partition wall provided inside the outer cap has a protrusion on the upper surface of the bowl-shaped piece extending from the inner cylinder of the inner cap. It is desirable to rotate the inner cap in the rotational direction of the outer cap.

  In the above structure, the outer cap and the inner cap rotate integrally when the cap is closed, and the inner cap can continue to deform at least a part of the container even if the seal of the discharge hole is opened when the cap is opened.

  Further, in the ejection preventing container according to the present invention, the cap is a set in which the peripheral protrusion on the outer peripheral surface of the fitting cylinder provided inside the outer cap is fitted and locked in the peripheral groove portion of the inner cylinder of the inner cap. It is desirable to have a mounting structure.

  In the above structure, since the outer cap seals the discharge hole, and then the inside of the container is in a reduced pressure state due to deformation by the inner cap, it is possible to prevent the liquid from being ejected whatever the content.

  In the ejection preventing container according to the present invention, a stepped step wall portion may be provided on the shoulder portion.

  In the above structure, since the container can be expanded outside by providing a step on the shoulder, the outer periphery of the trunk can be matched with the outer periphery of the cap, thereby making the appearance uniform and improving the decorating of the entire container be able to.

  Moreover, in the ejection preventing container according to the present invention, it is desirable that the deformed portion due to the convex rib is a long diameter portion having a non-true circular cross-sectional shape.

  In the above structure, the deformed portion is the long diameter portion of the non-round circular cross-sectional shape, so that the cross-sectional shape can be made closer to a perfect circular shape by deformation, and the internal volume of the container is increased, thereby further increasing the inside of the container. The pressure can be further reduced.

  In the main configuration of the present invention, the inner volume of the container is increased by deforming a part of the container after the sealing of the discharge hole is started, so that the inside of the container can be decompressed. A force that sucks the object into the container acts, and it is possible to prevent the contents from being ejected.

  When the container cap is closed or when the cap is opened, the partition wall provided inside the outer cap comes into contact with the protrusion on the upper surface of the bowl-shaped piece extending from the inner cylinder of the inner cap, and the inner cap is rotated in the direction of rotation of the outer cap. When the cap is closed, the outer cap and the inner cap rotate together, and the inner cap deforms part of the container even if the discharge hole seal is opened when the cap is opened. Since it can continue, prevention of ejection can be achieved when the cap is opened.

  In the case of an assembly structure cap in which the peripheral protrusion on the outer peripheral surface of the fitting cylinder provided inside the outer cap fits into the peripheral groove of the inner cylinder of the inner cap, the outer cap has a discharge hole. Since the inside of the container is depressurized by sealing and then being deformed by the inner cap, the liquid can be prevented from being ejected regardless of the liquid content.

  In the case where a shoulder-like stepped wall is disposed on the shoulder, the outer periphery of the body of the container can be aligned with the outer periphery of the cap, and the uniform appearance provides a decorative effect over the entire container. It can be demonstrated.

  In the case where the deformed portion by the convex rib is a long-diameter portion of a non-true circular cross-sectional shape, the cross-sectional shape can be easily approximated to a perfect circular shape by deformation, and the internal volume of the container is increased, thereby increasing the container Internal decompression is possible.

The 1st Example of the ejection prevention container which concerns on this invention is shown, The left half in a figure is a front view, and the right half is a half sectional view. An example of an inner cap is shown, (a) is a plan view, (b) a left half is a front view, and a right half is a half sectional view. An example of an outer cap is shown. The left half of (a) is a front view, the right half is a half sectional view, and (b) is a bottom view. The state of the ejection prevention container at the time of cap obstruction | occlusion in 2nd Example of this invention is shown, (a) is a top view, (b) The left half is a front view, The right half is a half sectional view It is. FIG. 5 is a plan view, a front view, and a half sectional view similar to FIG. 4, showing a state of an ejection preventing container in the middle of opening a cap in a second embodiment of the present invention. FIG. 5 is a plan view, a front view, and a half sectional view similar to FIG. 4 showing a state of the ejection preventing container when the cap is opened in the second embodiment of the present invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a first embodiment of the ejection preventing container according to the present invention, in which the left half is a front view and the right half is a half sectional view. FIG. 2 shows an inner cap, where (a) is a plan view, (b) a left half is a front view, and a right half is a half sectional view. FIG. 3 shows an outer cap, in which the left half of (a) is a front view, the right half is a half sectional view, and (b) is a bottom view. 4 to 6 show a second embodiment of the ejection preventing container according to the present invention.

  A container 1 according to the present invention includes a mouth tube portion 5, a shoulder portion 4, a trunk portion 3 and a bottom portion 2. The mouth tube portion 5, the shoulder portion 4, the body portion 3, and the bottom portion 2 are connected in this order with their respective central axes positioned on a common axis. Hereinafter, the common axis is referred to as the container axis O, and the mouth tube part 5 side is the upper side and the bottom part 2 side is the lower side along the container axis O direction. A direction perpendicular to the container axis O is a container radial direction, and a direction around the container axis O is a container circumferential direction.

  In the present embodiment, the container 1 is a container in which a mouth tube portion 5 is erected on the upper end of a body portion 3 having an elliptical cross-sectional shape via a shoulder portion 4 having the same shape. For example, a polyethylene (PE) resin is stretched and blown. Molded by molding. An inner plug body 6 is assembled and fixed to the mouth tube portion 5. The inner plug 6 is, for example, an injection molded product made of polyethylene (PE) resin or the like, and has a top tube shape as a whole and has a top wall in which a discharge hole 7 is formed. In the upper half region, the cylindrical portion is tapered so that the diameter thereof is reduced toward the top wall, and in the lower half region, a seal cylinder is suspended from the inside. In addition, the seal tube is fitted into the mouth tube part 5 in a liquid-tight manner, the inside of the mouth tube part 5 and the inner plug body 6 communicates, and a discharge channel for contents reaching the discharge hole 7 is formed.

  The container 1 according to the present invention is fitted with a cap 10 so as to cover the range from the inner plug body 6 to the shoulder portion 4, and the discharge hole 7 that opens in the top wall of the inner plug body 6 is formed in the cap 10. It is set as the structure sealed with the lid stopper 22 of the lower surface of the top wall.

  The container 1 has a non-circular shape in at least a partial cross section. The shape of the shoulder 4 provided in the container 1 is preferably a non-circular cross-sectional shape, and examples thereof include various other cross-sectional shapes such as an elliptical cross-sectional shape and a rectangular shape. As for the shape of the trunk | drum 3 connected with the shoulder part 4, it is preferable that a part is non-circular cross-sectional shape, and it is more preferable from the uniformity of an external appearance that it is the same cross-sectional shape as the shoulder part 4, It may have a different cross-sectional shape.

  The portion that is deformed by pushing in the radial direction of the container due to the contact of the convex rib 20 is preferably a long-diameter portion having a non-circular cross-sectional shape. Since the portion to be deformed is a long-diameter portion having a non-round circular cross-sectional shape, the cross-sectional shape can be made closer to a perfect circular shape by deformation, and the internal volume of the container is increased, thereby further reducing the pressure inside the container. be able to.

  The cap 10 has an assembled structure in which the peripheral protrusion 21 on the outer peripheral surface of the fitting cylinder 13 provided on the inner side of the outer cap 11 is fitted and locked in the peripheral groove portion 18 of the inner cylinder 17 of the inner cap 12. . As shown in FIG. 2, the inner cap 12 includes an inner cylinder 17 assembled to the fitting cylinder 13 of the outer cap 11, a hook-like piece 15 extending from the inner cylinder 17, and a protrusion 16 on the upper surface of the hook-like piece 15. The outer peripheral wall 19 hangs down from the outer edge of the bowl-shaped piece 15, and the inner peripheral surface of the outer peripheral wall 19 has a convex rib 20, and is integrally formed of a synthetic resin material.

  As shown in FIG. 3, the outer cap 11 is formed in a cylindrical shape, and a fitting cylinder 13 is suspended from the top wall of the outer cap 11. On the inner peripheral surface of the fitting tube 13, a female screw that is screwed to the male screw on the side of the mouth tube portion 5 is engraved, and on the outer peripheral surface of the fitting tube 13, the peripheral groove portion 18 of the inner cap 12 is formed. A circumferential ridge 21 for fitting and locking is formed. An outer cylinder 24 is suspended from the outer edge of the top wall of the outer cap 11, and a partition wall 23 is disposed on the outer cylinder 24, and a long partition wall 23a and a short short partition wall 23b are formed. Has been. Similarly to the inner cap 12, the outer cap 11 is also integrally formed of a synthetic resin material.

  The cap 10 of the blowout prevention container according to the present invention comprises two members, an outer cap 11 and an inner cap 12, and the circumferential protrusion 21 of the outer cap 11 is formed in the circumferential groove 18 having a predetermined width of the inner cap 12. Since the inner cap 12 is fitted and locked, the inner cap 12 can freely rotate around the fitting cylinder 13 of the outer cap 11 in the circumferential direction of the container, and the circumferential groove 18 has a predetermined width, so that it slides up and down. can do.

  Next, the Example which arrange | positions the step-shaped level | step-difference wall part 25 in the shoulder part 4 in the ejection prevention container which concerns on this invention is demonstrated. In the case where the shoulder portion 4 is provided with the stepped stepped wall portion 25, the container 1 can be expanded in diameter by providing a step on the shoulder portion 4. It is possible to match with the outer periphery of the container, whereby uniformity in the appearance appears and the decoration of the entire container can be improved. An ejection preventing container having a two-level step wall 25 on the shoulder 4 is shown in FIGS. 4 to 6 as a second embodiment, and the operation when the cap is closed and when the cap is opened will be described.

  When closing the cap, as shown in FIG. 4A, the cap 10 is fitted on the container 1 with the outer cap 11 and the inner cap 12 assembled. When the cap 10 is tightened in the rotation direction of the arrow in the figure, the long partition wall 23a of the outer cap 11 comes into contact with the protrusion 16 of the inner cap 12, so that the outer cap 11 and the inner cap 12 become integrated. Both of them turn in the direction of the arrow, and the lid stopper 22 on the lower surface of the top wall of the outer cap 11 comes into close contact with the discharge hole 7 to seal it, thereby making the inside of the container 1 a sealed space. After that, when the cap 10 is tightened, the convex rib 20 of the inner cap 12 comes into contact with the first long diameter portion of the stepped wall portion 25 of the shoulder portion 4 as shown in FIG. By pushing in from the side surface of the container 4 in the container radial direction, the long diameter part of the shoulder part 4 is deformed. Due to the deformation at the long diameter portion, the shoulder portion 4 is deformed so as to approach the perfect circular cross-sectional shape from the non-true circular cross sectional shape. Due to the deformation approaching the true circular cross-sectional shape, the inner volume of the container 1 is increased, whereby the sealed space inside the container 1 is in a reduced pressure state.

  In addition, if the deformation | transformation in the shoulder part 4 starts before the sealing of the discharge hole 7, even if sealing is completed, the internal volume of the container 1 cannot be increased, and the inside of the container 1 will not be in a reduced pressure state. Therefore, the deformation start time of the shoulder 4 is after the seal of the discharge hole 7 is started.

  FIG. 5 shows the cap in the middle of opening. When the cap 10 is opened in the direction of the arrow in FIG. 5 (a) opposite to that when the cap is closed, only the outer cap 11 is fitted. It is rotated upward by a screw screwed in. At this time, since the outer cap 11 can move above the circumferential groove 18 by a predetermined width, the seal of the discharge hole 7 by the lid plug 22 is thereby opened. When the seal is opened, the convex rib 20 still pushes the shoulder portion 4 in the container radial direction from the side surface and deforms the shoulder portion 4, so that the decompressed state of the sealed space inside the container 1 is maintained.

  Thereafter, when the short partition wall 23b of the outer cap 11 abuts on the protrusion 16 of the inner cap 12, the outer cap 11 and the inner cap 12 become integral and start to rotate together in the direction of the arrow. When the outer cap 11 and the inner cap 12 start to rotate together, the angle at which the long partition wall 23a has moved from when the cap is closed is indicated by the seal opening angle α. In this embodiment, α is 55 degrees. Met.

  FIG. 6 shows when the cap is opened. When the cap 10 is further rotated in the direction of the arrow in the figure to open the cap 10, the short partition wall 23 b of the outer cap 11 contacts the protrusion 16 of the inner cap 12. Since they are in contact with each other, the outer cap 11 and the inner cap 12 become integral and rotate together in the direction of the arrow. As a result, the convex rib 20 of the inner cap 12 moves along the long diameter portion of the shoulder portion 4, but finally the convex rib 20 is detached from the shoulder portion 4, and the shoulder portion 4 is restored to its original shape. When the cap is opened, since the inside of the container 1 is still in a reduced pressure state, the outside air is sucked into the container 1 through the discharge hole 7, so that the contents remaining near the discharge hole 7 are sucked into the container 1. The force acts to prevent the content liquid from being ejected. Note that the angle at which the long partition wall 23a moved from when the cap was closed when the cap was opened and the container started to be restored is indicated by the container restoration angle β. In this example, β was 90 degrees. .

  Examples of the contents of the squeeze container in the present invention include skin lotions and emulsions, liquid foundations, cosmetics such as sunscreens, foods such as liquid seasonings, and liquids such as pharmaceuticals. The viscosity of the content is preferably 3000 to 7000 cp from the viewpoint of preventing ejection.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

  For example, in the above embodiment, as a squeeze-deformable synthetic resin material forming the container 1, a PE resin alone has been described as an example, but in consideration of squeeze properties, gas barrier properties, chemical resistance, moldability, etc. You may change suitably to ethylene-vinyl alcohol copolymer resin (EVOH), ionomer resin (for example, brand name: High Milan etc.), another synthetic resin material, its blend material, its lamination | stacking, etc. Furthermore, the container 1 may be a laminated structure having an intermediate layer. An aluminum laminate can also be used to exhibit a high gas barrier property.

  Since the deformation of the container 1 in the above embodiment is caused by the convex rib 20 of the cap 10 pushing the outer periphery of the container in the container radial direction, the shoulder 4 close to the cap 10 is used as the deformation region. The outer peripheral wall 19 of the inner cap 12 is extended to the body part 3 and the convex rib 20 is brought into contact with the shoulder part 4 and the body part 3 having a non-circular cross-sectional shape to deform both the shoulder part 4 and the body part 3. It doesn't matter. Further, the shape of the stepped wall portion 25 of the shoulder portion 4 and the number of steps thereof, the shape of the non-circular cross section, the number of the convex ribs 20 and the shape thereof, the seal opening angle α, and the container restoration angle β are various aspects. can do.

  As described above, in the present invention, since unexpected ejection of contents in the squeeze container can be prevented, a wide range of use and development can be expected in the squeeze container.

1: Container 2: Bottom part 3: Body part 4: Shoulder part 5: Mouth tube part 6: Inner plug body 7: Discharge hole 10: Cap 11: Outer cap 12: Inner cap 13: Fitting cylinder 15: Saddle-shaped piece 16 : Protruding part 17: Interior cylinder 18: Circumferential groove part 19: Outer peripheral wall 20: Convex rib 21: Peripheral protrusion 22: Lid plug 23: Partition wall 23a: Long partition wall 23b: Short partition wall 24: Exterior cylinder 25: Step wall Part O: Container axis α: Seal opening angle β: Container restoration angle

Claims (5)

A cap (10) is attached to a container (1) made of a squeeze-deformable synthetic resin material in which a mouth tube portion (5) is erected on the upper end of the body portion (3) via a shoulder portion (4). A squeeze prevention container for a squeeze container for discharging contents from a discharge hole (7) communicating with the mouth tube part (5) at the upper end of the mouth tube part (5) by squeeze deformation of the part (3). ,
The cross section of at least a portion of the container has a non-circular shape;
The cap (10) comprises an outer cap (12) fitted to the mouth tube portion (5) and an inner cap (11) assembled to the outer cap (12).
After the discharge hole (7) starts sealing when the cap is closed, the inner cap (11) contacts the convex rib (20) from the side surface of the container (1) to deform a part of the container (1). Let
Even after the seal of the discharge hole (7) is opened when the cap is opened, a part of the container (1) is formed by the convex rib (20) until the convex rib (20) is detached from the side surface of the container (1). Deformed,
An ejection preventing container characterized by that.   When the cap of the container (1) is closed or opened, a partition wall (23) provided inside the outer cap (11) extends from the inner cylinder (17) of the inner cap (12). The ejection preventing container according to claim 1, wherein the ejection cap (16) is in contact with the protrusion (16) on the upper surface of the piece (15) and rotates the inner cap (12) in the rotational direction of the outer cap (11).   The cap (10) has a circumferential protrusion (21) on the outer peripheral surface of the fitting tube (13) provided inside the outer cap (11), and the inner tube (17) of the inner cap (12). The ejection preventing container according to claim 1 or 2, which has an assembled structure fitted and locked in the circumferential groove (18).   The ejection preventing container according to any one of claims 1 to 3, wherein a step-like step wall (25) is disposed on the shoulder (4).   The ejection preventing container according to any one of claims 1 to 4, wherein the deformed portion by the convex rib (20) is a long-diameter portion having a non-true circular cross-sectional shape.

Images