JP2996092B2 - Tamperproof stopper for liquid paper container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid paper container having a spout for use in foods such as fruit drinks, milk and sake, and non-foods such as shampoos and fabric softeners. The present invention relates to a stopper for preventing unauthorized opening of a liquid paper container that can be clearly recognized when opened.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
A cut-out portion (330) in which the lower part inside the cylindrical peripheral wall (321) of (0) is closed, and a thin weak line ring (334) formed by making a V-shaped cut (333) from the lower surface in the closed portion. ) And a spout (32) having a tension ring (332) connected to a column (331) standing upright on the cutout.
0) was generally widely used in terms of virgin function and easy opening. At the time of use, the tension ring (33
Put your finger in 2) and pull it upward and forward.
The thin-walled brittle line ring (334) around (0) was torn, the cutout (330) was cut off from the inside of the peripheral wall (311), and the spout was opened to discharge the liquid content.

[0003]

However, the spout that opens by tearing the thin brittle wire ring by the above-mentioned tension ring may require unexpected force for the housewife at the time of opening, the tension ring may be damaged, or the opening may be broken. There were complaints such as liquid leakage occurring when the resealed container was inverted. In recent years, mischief on products at stores has become subtle, and even if the appearance is quite normal, for example, the thin-walled fragile wire ring is capped with a partially cut ring. Was. However, the fraud-preventing plug for a liquid paper container is still in the development stage, and a plug that can withstand practical use has not been developed. Therefore, the present inventor
As an issue to solve the following, we have developed a fraud prevention plug for a liquid paper container. The problem is that it has a virgin function, that once it is opened, it can be clearly recognized that it has been opened even if it is resealed, that the housewife can easily open it, and that liquid leakage occurs when reopened after opening. There was no structure. An object of the present invention is to provide a plug for preventing the fraud of a liquid paper container which sufficiently solves the above-mentioned problems.

[0004]

A first invention is shown in FIG.
As shown in (a) and (b), the spout part (120)
A spigot (12) which is connected to the outer peripheral surface of the lid (110) by a connecting band (130) on the outer peripheral surface of the spout portion (12).
A locking recess (125) for locking the peripheral wall plate (11) of the liquid paper container is provided on the outer peripheral surface at the lower end of the base ring (124) of (0), and the locking ring (123) is provided on the outer peripheral surface at the upper end surface. It erected a cylindrical wall (121) with, and, consolidated zone (130) and opening piece to the peripheral wall (114) opposed positions (116) provided, the opening piece of the lid (110) (1
16) is connected to the top plate (11) via the hinge (115).
1), an opening knob (117) is provided outside the lower end, and peripheral walls (11) on both sides of the opening knob (117).
4) The weak line reaching the hinge (115) from the lower end
(119) and a spout portion (1 ) inside the lower end.
20) A stopper (100) for preventing unauthorized opening of a liquid paper container, wherein a stopper (118) for engaging with the stopper ring (123) is provided.

According to a second aspect of the present invention, in the plug according to the first aspect, as shown in FIG. 1A, a spout portion (120) is provided inside a top plate (111) of a lid portion (110). Surrounding wall (1
21) An inner ring (112) that presses the inside of the tip (122) and an outer ring (11) that presses the outside.
3) A plug (100) for preventing unauthorized opening of a liquid paper container, wherein the plug (100) is provided.

According to a third aspect, in the plug according to the first aspect, as shown in FIG. 3, the top plate (2) of the lid (210) is provided.
11) Inside, the peripheral wall (221) of the spout part (220)
An inner ring (2) that presses the inside of the tip (222)
12) and a contact ring (213) for pressing the upper surface into contact
A stopper (200) for preventing unauthorized opening of a liquid paper container.

[0007] The above-mentioned tamper-resistant plug (100, 20)
No. 0) is produced by an injection molding method using a low-density polyethylene, a high-density polyethylene, a linear low-density polyethylene, a polyester resin, or the like which can be thermally fused to the peripheral wall plate (11) of the liquid paper container.

The weak line (119) is a perforated line or a thin line formed on the peripheral wall (114) of the lid (110).

[0009]

The tamper-evident plug of the present invention mounted on the liquid paper container is protruded and fixed to the peripheral wall plate (11) of the liquid paper container as shown in FIGS. 1 (a) and 1 (b). The lid (1) connected to the spout part (120) by the connecting band (130)
10) is capped by the spout portion (120), the consolidated zone (1
Lid position you relative and 30) the peripheral wall of the (110) (11
4) The spout portion (12) is opened with the opening piece (116) provided in
0). This opening piece (116) has an upper end connected to the top plate (111) via a hinge (115), and left and right sides connected to the peripheral wall (114) by weak lines (119),
A locking projection (118) provided inside the lower end is engaged with a locking ring (123) of the spout portion (120). Therefore, the opening knob (117) provided on the outer side of the lower end of the opening piece (116) is pulled up to open the opening piece (11).
While cutting the weak lines (119) on both left and right sides of 6), as shown in FIG.
The lid (110) cannot be removed from the spout (120) unless the is removed from the locking ring (123) of the spout. For this reason, the plug (100) has a virgin function, and the cut weakened line (119) can be easily and clearly recognized from the outside.

The tamper-resistant plug (10) of the present invention is also provided.
0,200), as shown in FIG. 1 (a) or FIG.
Lid (110, 21)
0) on the inner surface of the top plate (111, 211).
0, 220), the inner ring (112, 212) that presses the peripheral wall tips (122, 222) and the outer ring (113) or the contact ring (213) are provided. , 220)
Inner rings (112, 21) of the lids (110, 210) that press the front end portions (122, 222) of the peripheral walls from inside.
The liquid leakage of the first stage is prevented in 2), and the outer ring (1) of the lid (110) that presses the distal end portions (122, 222) of the spout portions (120, 220) from the outside.
13) or contact ring (21) of lid (210)
In step 3), the liquid leakage at the second stage is prevented. For this reason, even if the resealed container falls over after opening, liquid leakage occurs but is extremely small. A spout (32) that tears open the thin brittle wire ring with a conventional tension ring and opens it.
As shown in FIG. 4, the cap (31) presses the distal end portion (323) of the peripheral wall of the spout (320) from the inside, as shown in FIG.
The inner ring (313) provided inside the top plate (311) of (0) prevents liquid leakage, and has a single-stage liquid leakage prevention structure, which may cause liquid leakage when the container falls. there were.

[0011]

<Example 1> First, using a colored linear low-density polyethylene, the tamper-resistant mouth stopper of this example was prepared by connecting a lid to a spout portion with a connecting band by an injection molding method. This faucet (1
00), as shown in FIGS. 1 (a) and 1 (b),
A locking recess (125) for locking the peripheral wall plate (11) of the liquid paper container is provided on the outer peripheral surface of the lower end of the pedestal ring (124) of the spout portion (120). Erecting a cylindrical peripheral wall (121) having (123);
A connecting band (13) is provided on the outer peripheral surface of the upper end of the spout portion (120).
0), a lid (110) is provided with an opening piece (116) on the peripheral wall (114) at a position facing the connecting band (130), and the upper end of the opening piece (116) is connected via a hinge (115). To the top plate (111), an opening knob (117) is provided outside the lower end, and a spout portion (12) is provided inside the lower end.
0), a locking projection (118) for engaging with the locking ring (123) is provided, and the left and right sides are connected to the peripheral wall (121) by a perforated weak line (119). The inner ring (112) presses the inside of the peripheral wall (121) and the tip (122) of the spout portion (120).
And an outer ring (113) that presses the outside. In addition, the spout is 18 spouts and a lid.
Molding was performed with the opening at 0 °, and after molding, the lid was firmly fitted to the spout portion with a click.

Next, the prepared plug is heat-sealed by an ultrasonic sealing method to the top opening of the sleeve of the liquid paper container (blank which is stuck back and folded). With a sleeve for liquid filling,
After the sealing step, a liquid paper container (10) was prepared in which the tamper-evident plug (100) of this embodiment shown in FIG. 2 was attached to the peripheral wall plate (11) at the top. The spigot of this embodiment attached to the liquid paper container has a spout portion fixed to the container, a lid portion, and a locking projection provided on the lower end inside the opening piece on a locking ring of the spout portion. It was engaged and firmly fixed. This lid could not be removed from the spout unless the weak lines on both the left and right sides of the opening piece were cut, and had a virgin function. Next, pull up the opening knob provided on the outside of the lower end of the opening piece, cut the weak lines on both the left and right sides of the opening piece, remove the lid from the spout section, open the container, and then reopen the lid again. The part was fitted to the spout part. Once the faucet was opened, the fragile lines on both the left and right sides of the opened piece were cut, so that it was clearly and easily recognized that the faucet was opened. Further, when the container with the plug resealed was inverted and allowed to stand for 24 hours, no water leakage occurred. It should be noted that the weak lines on both the left and right sides of the opened piece could be easily cut by the housewife.

<Embodiment 2> First, in place of the outer ring which presses the outer end of the outer wall of the spout formed inside the top plate of the lid in the first embodiment, the upper surface of the outer wall of the spout is pressed. A liquid paper container filled with water was prepared in the same manner as in Example 1 except that a contact ring to be formed was formed, and the tamper-evident plug (200) of the present example shown in FIG. 3 was attached to the top. . The plug of this embodiment of this container had a virgin function and a function of preventing unauthorized opening, as in the first embodiment. In addition, resealed container with a stopper
After standing for an inverted time, no water leakage occurred.

[0014]

The tamper-evident plug for a liquid paper container according to the present invention has a spout portion protruding from and fixed to the peripheral wall plate of the liquid paper container, and a lid portion connected by a connecting band is mounted on the spout portion. , are fixed to the spout portion engaged with the locking ring of the spout part a locking projection provided on a lower end inner side of the opening piece which is formed in the peripheral wall of the lid portion opposing position and consolidated zone. Therefore, as long as the pull-out knob outside the lower end of the opening piece is pulled upward, the weak lines on both the left and right sides of the opening piece are cut, and the locking projection inside the lower end is not removed from the locking ring of the spout portion,
The lid cannot be removed from the spout. For this reason,
The spout has a virgin function, and the fragile line that has been cut once can be easily and clearly recognized from the outside, and also has a function to prevent unauthorized opening. In addition, since the cutting strength of the weak line on both the left and right sides of the opening piece depends on the method of forming the weak line, it can be set according to the required strength.

The tamper-evident plug of the present invention is provided with an inner ring and an outer ring or a contact ring for pressing the tip of the peripheral wall of the spout portion against the inner surface of the top plate of the lid portion. Leak prevention structure is adopted.
Therefore, even if the resealed container falls over after opening,
Liquid leakage occurs but is extremely small as compared with a spout that is opened by tearing a thin brittle wire ring with a conventional tension ring having only a one-stage liquid leakage prevention structure.

[Brief description of the drawings]

FIG. 1A is a diagram illustrating a first embodiment in which a liquid paper container is mounted.
(B) is this perspective view,
(C) is a perspective view which shows the state which cut | disconnected the weak line of the cover part and opened the container.

FIG. 2 is a perspective view of a liquid paper container in which the stopper according to the first embodiment is mounted on the top.

FIG. 3 is a cross-sectional view of a plug according to a second embodiment attached to a liquid paper container.

FIG. 4 is a cross-sectional view of a conventional tension ring type plug attached to a liquid paper container.

[Explanation of symbols]

10 liquid paper container 11 peripheral wall plate 100, 200, 300 plug 110, 210 lid part 111, 211, 311 top plate 112, 212, 313 inner ring 113 outer ring 114, 121, 214, 221, 312, 321 ...
Peripheral wall 115, 215 Hinge 116, 216 Opening piece 117, 217 Opening knob 118, 218 Locking protrusion 119… Weak line 120, 220… Spout part 122, 222, 323… Tip Part 123, 223 Lock ring 124, 224 Pedestal ring 125, 225, 328 Lock recess 130, 230 Connection band 213 Contact ring 310 Cap 315 Female screw 320 Spout 324: male screw 330: cut-out portion 331: support column 332: tension ring 333: V-shaped cut 334: thin-walled weak wire ring

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B65D 5/74 B65D 41/32 B65D 47/36

Claims (3)

(57) [Claims] 1. A spigot having a spliced portion connected to a lower peripheral surface of a lid by a connecting band, wherein a peripheral wall plate of a liquid paper container is connected to an outer peripheral surface of a lower end of a pedestal ring of the spout portion. It provided a locking recess stop, the upper end face, erected a cylindrical wall with a locking ring on an outer peripheral surface, and the opening piece is provided in the peripheral wall of the consolidated zone and opposite position of the lid The upper end of the opening piece is connected to the top plate via a hinge, and an opening knob is provided outside the lower end, and peripheral walls (114) on both sides of the opening knob are provided.
A fragile line extending from the lower end to the hinge, and a locking projection on the inside of the lower end for engaging with the locking ring of the spout portion. 2. The spigot according to claim 1, wherein an inner ring for pressing the inside of the front end portion of the peripheral wall of the spout portion and an outer ring for pressing the outside are provided inside the top plate of the lid portion. Features a stopper for preventing unauthorized opening of liquid paper containers. 3. The spout according to claim 1, wherein an inner ring for pressing the inside of the front end of the peripheral wall of the spout portion and a contact ring for pressing the upper surface are provided inside the top plate of the lid portion. Features a stopper for preventing unauthorized opening of liquid paper containers.