JP2002029551A - Spout with stopper for baglike container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spout for a baglike container which offers sufficiently- hermetic sealing function at the time of re-sealing. SOLUTION: The stopper 3 of a spout 1 includes a finger-hold portion 9 and a stopper portion 5. The stopper portion 5 has a short diameter portion formed in the lower portion of a cylindrical part 14 continuing from the underside of the finger-hold portion 3, and a long diameter portion that is perpendicular to the short diameter portion and projects horizontally. The upper side 15 of the long diameter portion is a predetermined distance spaced from an annular projection 12 formed on the underside of the finger-hold portion. An engagement projection 13 is formed horizontally inward at the upper end of a tube 6 of a spout main body 2. A thin wall 4 is formed to connect the inner circumferential surface of the upper end of the spout main body and the outer circumferential surface of the leading end of the stopper 5. The upper side 15 of the long diameter portion of the stopper preferably defines an inclined surface in such a manner as to gradually bulge towards the longest diameter portion. At the time of re-sealing, the engagement projection 13 of the spout main body is held between the annular projection 12 of the detached stopper 3 and the upper side 15 of the long diameter portion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spout provided with a spout and a spigot integrally formed at the open end of a bag-like container filled with various flowable substances.

[0002]

2. Description of the Related Art A spout assembly in which a spout and a stopper are integrally formed is attached to the open end of a bag-like container.
It is disclosed in JP-A-9-249237. This spout combination is formed integrally with the spout at the upper end of the cylindrical part of the spout so that the plug faces in the mounting direction and is peelable, and when opening the bag-shaped container, between the spout and the plug. When the seam formed thin is broken, the plug is removed, and when the bag-shaped container is resealed, the plug is inserted or screwed into the spout.

[0003] In the above-described spout combination, when attached to the bag-like container, the tip of the plug is connected to the upper end of the cylindrical portion of the spout by a thin seam. Can be prevented from adhering and can be used hygienically.

[0004]

When the spout is twisted by hand to open the bag-like container, the spout is connected to the upper end of the spout by a thin seam. The plug is inclined with respect to the spout. It is difficult to twist when the stopper is tilted, and if you twist it strongly,
The seam on the inclined side is broken, but the seam in the direction perpendicular to the inclined direction does not break. Therefore, it is necessary to twist the plug again or straighten the plug to break the seam.

[0005] As described above, if the plug is twisted or tilted many times during opening, the seam may not be uniformly broken, and when the plug is resealed, the seal may not be sealed. In addition, since the inner surface of the cylindrical portion of the spout and the outer surface of the plug are configured to be fitted or screwed into a male-female relationship,
If there is an irregular break at the joint at the tip of the removed plug, it becomes difficult to insert or screw the removed plug into the spout.
Further, since the above-mentioned spout combination has a structure in which the plug is screwed in order to prevent the plug from falling off at the time of resealing, a complicated molding die is required and the manufacturing cost is increased.

According to the present invention, a spout with a stopper for a bag-shaped container has a simple structure, makes it easy to remove the stopper at the time of opening, provides a sufficient sealing function at the time of resealing, and prevents the stopper from falling off. It is an object to provide a spout with a plug that can be prevented.

[0007]

According to the present invention, a plug of a spout with a plug comprises a knob and a plug which fits into a spout main body, and the plug is formed of a cylindrical portion following the lower surface of the knob. It has a short diameter portion formed below and a long diameter portion extending in the horizontal direction orthogonal to the short diameter portion, and the upper surface of the long diameter portion is separated from the annular projection formed on the lower surface of the knob by a predetermined distance. On the upper end surface of the cylindrical portion of the spout main body portion, an engaging projection having a thickness corresponding to a predetermined interval formed in the plug portion of the plug is formed to protrude inward in the horizontal direction, and the spout main body portion is formed. The thinner portion is formed by connecting the inner peripheral surface of the upper end of the plug and the outer peripheral surface of the distal end of the plug portion. It is suitable. At the time of resealing, the engagement projection of the spout body is sandwiched between the annular projection of the removed plug and the upper surface of the long diameter portion, so that a sufficient sealing function can be obtained at the time of resealing.

[0008]

FIG. 1 is a front view showing an example of a spout with a stopper according to the present invention, and a right side is shown in cross section. 2 is a side view of FIG. 1, FIG. 3 is a plan view of FIG. 1, and FIG.
FIG. 5 is a sectional view taken along line YY in FIG.
The spout 1 with a plug is made of synthetic resin such as polypropylene or polyethylene by injection molding, and the spout main body 2 and the plug 3 are integrally connected via a thin portion 4.
The spout body 2 has a cylindrical tube portion 6 formed at the top,
A cylindrical passage 8 through which the contents pass is provided inside these. The horizontal cross-sectional shape of the fixing portion 7 has a boat shape, is inserted into the open end of a bag-shaped container (not shown), and is appropriately formed by a heat sealing method or an adhesive.
Close and secure the open end of the bag-shaped container.

The stopper 3 comprises a stopper part 5 and a knob part 9, and the knob part 9 comprises a box-shaped hollow handle 10 and a disk part 11, and an annular projection 12 is formed on the lower surface of the disk part 11. Is formed. The plug part 5 is connected to the lower surface of the knob part 9 by a cylindrical part 14,
As shown in FIG. 5, the horizontal cross section has a shape obtained by adding an isosceles triangle integrally to each of two opposing sides of a square, forming a shape like a turtle shell, and a tapered portion formed at the tip end thereof. Is connected to the upper end of the cylindrical portion 6 of the spout body 2 via the thin portion 4.

Regarding the horizontal cross-sectional shape of the plug portion 5, a portion having a length of one side of a square is called a short diameter portion, and a portion having a length obtained by adding the height of an isosceles triangle to the short diameter portion is called a long diameter portion. The shape of the plug portion 5 will be described in detail. The length of the short diameter part of the plug part 5 is
As shown in FIG. 4, the diameter of the cylindrical portion 14 is made equal to that of the plug portion 5.
The major axis of the handle 10 is perpendicular to the minor axis of the handle 9 of the knob 9.
And the longest length thereof is slightly shorter than the inner diameter of the cylindrical portion 6 of the spout body 2 as shown in FIG. On the upper surface 15 of the long diameter portion of the plug portion 5, an inclined surface gradually rising toward the portion having the longest diameter is formed, and the inclined upper surface 15 and the annular projection 12 on the lower surface of the knob 9 are formed.
There is provided a space 16 between which an engagement protrusion 13 formed on the upper end surface of the cylindrical portion of the outlet main body portion 2 described later can be fitted.

An engagement projection 13 extending radially inward from the periphery is formed at the upper end of the cylindrical portion 6 of the spout body 2, and a short diameter portion and a long diameter portion of the plug portion 5 are formed via the thin portion 4. Connected around the department.

When opening the bag-shaped container filled with the contents, the spout body 2 is gripped with one hand, and the knob 9 is twisted or tilted with the other hand to break the thin portion 4 and break the plug 3. Remove. At this time, since the cross-sectional shape of the plug portion 5 has a short diameter portion and a long diameter portion, and there is always a corner portion, the breaking force is concentrated on the corner portion and the thin portion 4 is easily broken. I do.

To reseal the bag-shaped container, the plug 5 of the plug 3 removed is inserted into the tube 6 of the spout body 2. At this time, since the long diameter portion of the plug portion 5 of the plug 3 is formed in parallel with the longitudinal direction of the handle 10 of the knob 9, the plug portion 5 is
The stopper 5 can be easily inserted into the tube 6, and the annular projection 12 of the stopper 3 can be brought into contact with the upper end surface of the tube 6.

When the knob 9 is rotated from this state, the engagement projections 13 of the cylinder 6 enter the space 16 of the plug 3 and are sandwiched between the annular projection 12 and the inclined upper surface 15. Since the inclined upper surface 15 is formed with an inclined surface protruding toward the portion having the longest diameter, the resistance for rotating the knob 9 gradually increases, and the sealing is completed at a position rotated by about 90 degrees. FIG. 6 shows this resealed state. In this state, the user can feel by hand that the stopper 3 is tightly tightened,
Further, since the handle 10 is oriented in a direction parallel to the longitudinal direction of the fixing portion 7 of the spout main body 2, it can be visually confirmed.

In the resealing state shown in FIG. 6, the long diameter portion of the plug portion 5 of the plug 3 presses the lower surface of the engagement projection 13 so that the annular projection 12 comes into close contact with the upper end surface of the cylindrical portion 6 to perform sealing. Therefore, even if a break mark of the thin portion 4 occurs on the outer peripheral surface of the plug portion 5 or the inner periphery of the upper end of the cylindrical portion 6, the sealing function of the plug 3 is not affected.

In the above-described embodiment, the inclined surface is formed on the upper surface of the long diameter portion of the plug portion 5.
An inclined surface having a gradually increasing thickness may be formed on the lower surface of the engaging projection 13. Further, the shape of the plug portion 5 of the plug 3 is not limited to the above embodiment, and FIG. 7 shows another form of the plug portion. FIG. 7 is an explanatory diagram in which the outline of the horizontal cross section of the plug portion is a solid line, and a broken line is drawn on the solid line to explain the shape. FIG. 7A
FIG. 7B shows a shape obtained by adding a trapezoid to each of two opposite sides of a square, and FIG. 7B shows a shape obtained by cutting and adding a part of a circle instead of the trapezoid. FIG. 7C shows a shape in which an isosceles triangle is superimposed on a part of a circle. Further, although not shown, an ellipse or the like may be used.

[0017]

According to the present invention, the stopper can be easily removed when the bag-like container is opened, and the breakage of the thin portion does not affect the sealing function of the stopper at the time of resealing. It is obtained and the plug does not fall off. Further, the fact that the stopper is in the resealed state can be sensed with a fingertip operating the knob.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a spout with a stopper according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view of FIG. 1;

FIG. 4 is a sectional view taken along line XX of FIG. 1;

FIG. 5 is a sectional view taken along line YY of FIG. 1;

FIG. 6 is a front view showing a resealed state of the spout with a stopper of FIG. 1;

FIG. 7 is an explanatory view showing another embodiment of a plug portion in the spout with a plug of FIG. 1;

[Explanation of symbols]

1: spout with stopper 2: spout body 3: stopper 4: thin wall part 5: stopper part 6: cylindrical part 7: fixing part 8: passage
9: Knob 10: Handle 11: Disk 12: Annular projection 13: Engagement projection 14: Column 15: Inclined upper surface 16: Spacing

Continued on the front page F term (reference) 3E064 BC18 BC19 EA12 FA03 HN01 HN05 HN65 HQ02 3E084 AA06 AA12 AA24 AB01 BA01 CA01 CB04 CC04 CC05 EA02 EC04 EC05 FD02 GA08 GB08 GB12 HB01 HD04 KB01 LA02 LA17 LB02 LB07 LD01

Claims (2)

[Claims] 1. A spout with a plug, wherein the spout body and the plug are integrally formed by being connected by a breakable thin portion and are fixed to the open end of the bag-like container. The plug comprises a knob and a plug that fits into the spout body. The plug has a short-diameter portion formed below a cylindrical portion following the lower surface of the knob, and a horizontal direction orthogonal to the short-diameter portion. The upper surface of the long diameter portion is formed at a predetermined interval from the annular projection formed on the lower surface of the knob, and the stopper of the stopper is provided on the upper end surface of the cylindrical portion of the spout body. An engagement protrusion having a thickness corresponding to a predetermined interval formed in the portion is formed by extending inward in the horizontal direction, and a thin portion is formed by connecting an inner peripheral surface at an upper end of the outlet main body portion and an outer peripheral surface at a tip end of the plug portion. Formed so that, at the time of resealing, the engaging projection of the spout body is sandwiched between the annular projection of the removed plug and the upper surface of the long diameter portion. Bag-like container stoppered spout, characterized in that the sea urchin configuration. 2. The upper surface of the major diameter portion of the plug is an inclined surface that gradually rises toward a portion having the largest diameter.
A spout with a stopper for a bag-shaped container according to item 1.