JP5290839B2 - Blow molded thin bottle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blow-molded thin-walled bottle capable of preventing the content from leaking caused by an external force before unsealing a container and keeping the quality of the content by recapping. <P>SOLUTION: The blow molded thin-walled bottle is equipped with: a container body 1 in which a space region surrounded with a thin-walled wall part forming a shoulder part 1a, a barrel part 1b and a bottom part 1c is a filling space for the content; and a thin-walled opening neck part 2 standing from the top part of the container body 1 and forming a passage 2a connected with the filling space, and the container body 1 and the opening neck part 2 are integrally formed by blow molding. In the blow molded thin-walled bottle, the top of the opening neck part 2 is provided with a closing stopper 3 having a base connected to the top and opening the bottle by tearing using the boundary as a starting point. On the base part of the opening neck part 2, a contracting diameter part 6 which is brought into contact with the outer peripheral face of the inner cylinder 5a of a cap 5 under an engaging condition with the cap 5 and keeping their mutual relation under a sealed condition, is provided. On the closing stopper 3, the cap 5 which engages the outer peripheral wall of the opening neck part 2 after the bottle is opened, and opens and closes the passage 2a of the opening neck part 2, is arranged attachably/detachably. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a blow molded thin-walled bottle suitable as a container for food containing mayonnaise, ketchup, etc., and avoids leakage of contents due to external force and realizes bottle recap to improve the quality of the contents. It is intended to be held stably.

  As a container for mayonnaise, ketchup, etc., a bottle type container that presses the body part of the container and squeezes the contents is used, but this kind of container has the same filling port and spout. Therefore, after filling the contents, it was usual to stick a sealing member using an aluminum sheet.

  By the way, in this kind of bottle, if the filling and pouring outlet is made thin in order to reduce the amount of materials used and the amount of waste, the part is likely to be deformed, and it becomes a container in the product distribution stage. When an external force is applied, there is a concern that the sealing member may be peeled off locally and the contents may leak out.

  In this regard, it is advantageous to apply a virgin type container in which the contents are sealed in the container by thermally welding the filling port after filling the contents (see, for example, Patent Document 1). Since it cannot be sealed after opening, if the contents remain in the container, it must be left in the container as it is, and there is still room for improvement.

JP 2002-193232 A

  An object of the present invention is to propose a blow-molded thin-walled bottle that can reliably avoid leakage of contents due to an external force and that is useful for a container for foods that can be easily recapped.

The present invention relates to a container body having a space area surrounded by a thin wall part forming a shoulder part, a trunk part, and a bottom part as a filling space for contents, and a passage rising from the top of the container body and connected to the filling space A blow-molded thin-walled bottle formed integrally with the neck and neck by blow molding.
At the projecting end of the mouth and neck, a base connected to the projecting end is provided, and a sealing stopper for opening the bottle by tearing starting from the boundary is provided,
In the base of the mouth and neck, provided with a reduced diameter portion that contacts the outer peripheral surface of the inner cylinder of the cap in an engaged state with the cap and maintains a sealed state between them,
A cap that opens and closes the passage of the mouth and neck by engaging the outer peripheral wall of the mouth and neck after opening the bottle is detachably disposed on the sealing stopper ,
The upper end of the mouth-and-neck portion has a tapered shape inclined toward the axis of the bottle, and an annular body that is fitted to the outer peripheral surface of the inner cylinder of the cap in an engaged state with the cap. It is a blow molded thin bottle.

The base of the hermetic stopper provided in the blow molded thin bottle is connected to at least two positions on the outer peripheral wall so as to be tearable with respect to the neck and neck, and the upper end of the cap is applied to the lower end of the cap. by contact can leave only set a vertical rib for positioning against sealing stopper of the cap. The base is, in its ceiling wall, it is possible to easy removal of the sealing stopper by contact Ku to form a pull ring.

In addition, the mouth and neck portion is provided with an annular body having a tapered shape that is inclined toward the axial direction of the bottle at the upper end thereof, thereby forming a fitting portion that increases the linkage strength of the cap with respect to the mouth and neck portion. can do.

  Since the filling port can be heat-sealed after filling the contents, there is no leakage due to external force even if the whole container is thinned. In addition, by engaging the cap provided on the sealing plug with the mouth and neck, the bottle can be sealed even when the bottle is opened, and the quality of the contents can be maintained over a long period of time.

It is the figure which showed embodiment of the blow molding thin wall bottle according to this invention about the front. It is the figure which showed the side surface of FIG. It is the figure which showed the attachment state of the cap.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
1 and 2 are views showing an embodiment of a blow-molded thin wall bottle according to the present invention, FIG. 1 is a front view, and FIG. 2 is a side view (a cap is a cross-sectional view).

  In the figure, reference numeral 1 denotes a container body that forms a filling space for contents. The container body 1 includes a shoulder portion 1a, a body portion 1b connected to the shoulder portion 1a, and a bottom portion 1c connected to the body portion 1b by a thin wall portion.

Reference numeral 2 denotes a mouth and neck portion provided so as to rise from the top of the container body 1. The mouth / neck portion 2 is formed of a thin annular band having a passage 2a (see FIG. 3) connected to the filling space, and is formed integrally with the container body 1 during blow molding. A threaded portion n ₁ is formed on the outer peripheral wall of the mouth / neck portion 2.

  Reference numeral 3 denotes a sealing plug integrally connected to the protruding end (upper end portion) of the mouth-and-neck portion 2. The sealing plug 3 has a base 3a formed by an annular peripheral wall and a top plate (wall portion forming the top surface) connected to the annular peripheral wall, and is scheduled to be broken at the boundary between the protruding end of the neck 2 The bottle can be opened by tearing off the sealing plug 3 starting from a line (a part that is thinner than the mouth and neck) L.

4 is a pull ring integrally provided on the top plate of the base 3a, and 5 is a hinge cap that is detachably engaged with the outer peripheral wall of the mouth-and-neck portion 2 (engaged by an engagement means such as an undercut). . The hinge cap 5 includes an inner cylinder 5a positioned on the inner side of the mouth-and-neck part 2, and an outer cylinder 5b which is disposed on the outer side of the inner cylinder 5a with a space therebetween and which forms a groove portion opened downward therebetween. The inner cylinder 5a and the outer cylinder 5b are integrally connected at the upper end thereof, and the top wall 5d having a pouring cylinder 5c connected to the inner cylinder 5a is connected to the top wall 5d via a hinge h so as to be swingable. It is comprised from the cover body 5e which opens and closes the extraction pipe | tube 5c. The inner peripheral wall of the outer tube 5b, threaded portion n ₂ which engages with the threaded portion n ₁ provided on the outer peripheral wall of the mouth and neck 2 is provided, on the lower surface of the lid 5e on the inner peripheral wall of the pouring cylinder 5c A seal cylinder 5e ₁ that contacts and seals is formed.

  Reference numeral 6 denotes a reduced diameter portion provided at the base of the mouth / neck portion 2. The reduced diameter portion 6 is in contact with the outer peripheral surface of the inner cylinder 5a of the cap 5 in an engaged state with the hinge cap 5, and maintains a sealed state therebetween.

  Furthermore, 7 is the vertical rib shown in the example provided in two places of the opposing position of the cyclic | annular surrounding wall of the base 3a. The vertical rib 7 has a shape in which the lower end conforms to the outer surface of the mouth-and-neck portion 2 (may be connected so as to be torn off), and the upper end is brought into contact with the lower end of the cap 5 and sealed. Stabilization and positioning of the mounting posture with respect to the stopper 3 is performed.

  The blow-molded thin-walled bottle having the above-described configuration is in a state as shown in FIGS.

  In order to open the bottle and dispense the contents, the hinge cap 5 is first removed, then the pull ring 4 is pulled up with a finger, and the sealing plug 3 is torn off.

  FIG. 3 is a view showing a state in which the hinge cap 5 is screwed into the mouth / neck portion 2 and fixed and set. By setting the hinge cap 5, it becomes possible to close the mouth-and-neck portion 2 and to maintain the quality of the contents remaining in the container.

  The blow-molded thin wall bottle according to the present invention has a hinge cap 5 formed by forming an annular body 2b having a tapered shape in which the upper end of the neck portion 2 is inclined toward the axis O of the bottle (see FIG. 1). As shown in FIG. 3, when the neck 2 is set, it is possible to cause the annular body 2 b to fall inward and fit to the outer peripheral wall of the inner cylinder 4 a (formation of a fitting portion). As a result, the linkage strength of the hinge cap 4 with respect to the neck 2 is enhanced.

  It is possible to provide a filling port 1d at the center of the bottom 1c of the bottle (which is sealed by heat fusion after filling the content), and the content may be filled through the filling port 1d. The bottle can be held in an upright position by providing the filling port 1d with a bottom-inverted shape that can be pushed toward the inside of the bottle.

  In order to manufacture a bottle according to the present invention, a material (synthetic resin) is sandwiched between molds and the pull ring 4 is molded, and blow molding (biaxial stretch blow molding) is performed on the connected portion. There is no particular limitation.

  Even if the entire bottle including the mouth and neck is thinned, it is possible to prevent the leakage of the contents due to the external force, and it is possible to maintain the quality of the contents by recapping.

DESCRIPTION OF SYMBOLS 1 Container body 1a Shoulder part 1b Trunk part 1c Bottom part 1d Filling port 2 Neck part 2a Passage 3 Sealing plug 3a Base 4 Pull ring 4a Inner cylinder 4b Outer cylinder 4c Outlet cylinder 4d Top wall 5 Hinge cap 6 Reduced diameter part 7 Vertical rib n ₁ thread n ₂ thread

Claims (3)

A container body having a space area surrounded by a thin wall part forming the shoulder part, body part, and bottom part as a filling space for contents, and a thin wall that rises from the top of the container body and forms a passage leading to the filling space A blow-molded thin-walled bottle integrally formed by blow molding with the mouth-and-neck part.
At the projecting end of the mouth and neck, a base connected to the projecting end is provided, and a sealing stopper for opening the bottle by tearing starting from the boundary is provided,
In the base of the mouth and neck, provided with a reduced diameter portion that contacts the outer peripheral surface of the inner cylinder of the cap in an engaged state with the cap and maintains a sealed state between them,
A cap that opens and closes the passage of the mouth and neck by engaging the outer peripheral wall of the mouth and neck after opening the bottle is detachably disposed on the sealing stopper ,
The upper end of the mouth-and-neck portion has a tapered shape inclined toward the axis of the bottle, and an annular body that is fitted to the outer peripheral surface of the inner cylinder of the cap in an engaged state with the cap. Blow molded thin bottle.   The base is connected to at least two positions of the outer peripheral wall so as to be tearable with respect to the mouth and neck, and the upper end of the base is brought into contact with the lower end of the cap so that the cap is positioned with respect to the sealing plug. The blow-molded thin-walled bottle according to claim 1, wherein the blow-molded thin-wall bottle has a longitudinal rib.   The blow-molded thin-walled bottle according to claim 1 or 2, further comprising a pull ring on a wall portion forming the top surface of the base.

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