JP2004345714A - Plug with high barrier type pull-ring - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plug having high barrier type pull-ring showing superior heat resistance and pressure resistance when filling contents, showing a long-period superior storage at normal temperature/an excellent protection of the contents during a distribution process and further showing easy seal opening. <P>SOLUTION: A spout 100 is constituted such that a pouring-out cylinder 120 is vertically arranged at an annular base part circumferentially having a flange at an outer circumferential surface of a lower end, an inner lower side of the pouring-out cylinder is sealed by a sealing plate 130, a slit having a V-shaped sectional shape is formed from above at a predetermined opening position of the sealing plate, an annular thin-walled weak line 132 is formed at its lower surface, at least an entire lower surface of the sealing plate has a polyethylene layer 310 at the upper-most layer and a polyethylene layer 330 at the lower-most layer, its intermediate layer has a barrier vapor deposited polyethylene terephthalate film layer 320, and then a high-barrier type laminated film 300 having a cut at a position corresponding to the annular thin-walled weak line arranged at the polyethylene terephthalate vapor-deposited base film 321 is thermally melted and fitted through an insert injection molding process. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention comprises a spout protruding from a pouring position of a liquid paper container and a cap screwed onto the spout. The spout is opened by a pull ring, high-temperature filling is possible, and high barrier property with good protection of contents is provided. It relates to a plug with a pull ring.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a liquid paper container (20) used for contents such as beverages, alcoholic beverages, and seasonings has a body (21) having a square cylindrical shape as shown in FIG. In consideration of this, a spout (100) and a plug (10) serving as a cap (200) are protrudingly provided on the inclined plate (22) at the top of the gable roof. As shown in FIG. 3, for example, the spout (100) usually has a spout (100) for spouting (120) in order to ensure the perfect sealing property at the time of distribution, the virginity, and the easy opening property at the time of use. ) Is provided at the lower end or below at the inner side of the sealing plate (130) for sealing and opening at the time of use. Therefore, an annular cut (131) having an inverted V-shaped vertical cross section is formed on the lower surface of the planned opening position of the sealing plate. To form an annular thin line of weakness (132) on the upper surface, and a column (130) having a pull ring (140) at the tip is erected at a predetermined position on the sealing plate adjacent to the inside of the annular thin line of weakness. . At the time of opening the container, the cap was unscrewed from the spout, the fingertip was hung on a pull ring housed inside the spout ejection tube, and pulled upward to break the annular thin brittle line of the sealing plate to open. After the spout was opened, the cap was screwed and resealed after use.
[0003]
[Problems to be solved by the invention]
However, as described above, when the spout is opened, the conventional spout of the spout described above is pulled open by pulling the annular thin weak line of the sealing plate sealing the spouting cylinder with a pull ring, and the spout is opened. As a material, low-density polyethylene having break suitability for an annular thin-walled brittle wire was usually used. For this reason, for example, when the content is filled at a high temperature, the heat resistance and pressure resistance of the spout are insufficient and a problem occurs in the sealing property, or the gas barrier property of the spout is insufficient, and the content is oxidized and deteriorated. In some cases, there is a problem in the protection of the contents, such as changes in the flavor and aroma of the contents.
[0004]
The present invention is to solve the above problems of the conventional plug, excellent heat resistance and pressure resistance when filling the contents, good protection of the contents in long-term storage and distribution at room temperature, and An object of the present invention is to provide a plug with a high barrier pull ring that can be easily opened.
[0005]
[Means for Solving the Problems]
That is, in the first invention of the present invention, in a spout with a pull ring in which a cap is screwed onto a spout, the spout is provided with a spouting tube standing on an annular pedestal portion around which a flange is provided on a lower peripheral surface. The inside lower part of the dispensing cylinder is sealed with a sealing plate, and a cut having a V-shaped vertical cross section is formed from the upper surface at a predetermined opening position of the sealing plate to form an annular thin weak line on the lower surface. At least on the entire lower surface, having a polyethylene layer on the uppermost layer and the lowermost layer, having a barrier-deposited polyethylene terephthalate film layer on the intermediate layer, and the polyethylene terephthalate-deposited base film of the barrier-deposited polyethylene terephthalate film layer. High barrier laminated film cut at the position corresponding to the annular thin brittle line provided on the sealing plate and heat-sealed by insert injection molding. It is a Haibariya of pull ring with a spout that.
[0006]
Next, the second invention of the present invention relates to the sealing plate of the polyethylene terephthalate vapor-deposited base film of the barrier vapor-deposited polyethylene terephthalate film layer, wherein the high barrier laminated film is in a state of a laminated film before insert injection molding. The high-barrier pull-ring plug according to the first invention, characterized in that a position corresponding to the annular thin brittle line provided in the above is selectively cut by a laser cutting method.
[0007]
The third invention of the present invention is directed to a polyethylene terephthalate vapor-deposited base material of the barrier vapor-deposited polyethylene terephthalate film layer in a state of a laminated film thermally fused to the spout after insert injection molding of the high barrier laminated film. 2. The plug with a high barrier pull ring according to claim 1, wherein a position corresponding to the annular thin brittle line provided on the sealing plate of the film is selectively cut by a laser cutting method.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of a plug with a high barrier pull ring of the present invention will be described in detail with reference to the drawings.
FIG. 1A is a cross-sectional view of a spout of one embodiment of a plug with a high barrier pull ring, and FIG. 1B is an explanatory diagram showing a configuration of one embodiment of the high barrier laminated film. FIG. 1C is an explanatory diagram illustrating a configuration of another embodiment of another high barrier laminated film. FIG. 2 is a perspective view of an example of a liquid paper container with a plug.
[0009]
As shown in FIG. 2, the spout (100) that projects from the spout mounting hole of the inclined plate (22) at the top of the gable roof of the liquid paper container is shown in FIG. 2. And a cap (200) screwed onto the spout. As shown in FIG. 1 (a), the structure of the spout (200) is an annular pedestal (110) having a flange (140) provided around the lower end outer peripheral surface. ), A pouring cylinder (120) is erected, and the inside lower end of the pouring cylinder is sealed with a sealing plate (130). (131) is provided to form an annular thin weak line (132) on the lower surface, and the uppermost layer (closer plate side) and the lowermost layer (content side) shown in FIG. With polyethylene layers (310 and 330) and barrier layer on the intermediate layer A high barrier laminated film having a polyethylene terephthalate film layer (320), and cut at a position corresponding to an annular thin fragile line provided on a sealing plate of the polyethylene terephthalate vapor deposited base film (321) of the barrier vapor deposited polyethylene terephthalate film layer. (300) is thermally fused by insert injection molding. If necessary, as shown in FIG. 1C, printing is performed on the surface of the polyethylene terephthalate vapor-deposited base film (321) opposite to the vapor-deposited layer (322) of the barrier vapor-deposited polyethylene terephthalate film layer (320). A layer (323) may be provided. The vapor deposition layer (322) is a silicon oxide vapor deposition layer, an alumina vapor deposition layer, or the like. The spout is usually produced by an injection molding method using a low-density polyethylene or the like having a breaking suitability for an annular thin brittle line. The gate position (G) is, as shown in FIG. 1A, substantially at the center of the upper surface of the sealing plate (130). The cap is usually produced by injection molding using polypropylene, polyethylene or the like having appropriate rigidity.
[0010]
In addition, the method of cutting the position corresponding to the annular thin fragile line provided on the sealing plate of the polyethylene terephthalate vapor-deposited base film of the high barrier laminated film is performed before the insert injection molding, in the state of the laminated film, in the state of the laminated film. The polyethylene terephthalate film layer is selectively cut by laser cutting at the position corresponding to the annular thin fragile line provided on the polyethylene terephthalate vapor-deposited base film sealing plate, or heat-sealed to the spout after insert injection molding. In the state of the laminated film thus formed, the position corresponding to the annular thin fragile line provided on the sealing plate of the polyethylene terephthalate vapor-deposited base film of the barrier vapor-deposited polyethylene terephthalate film layer is selectively cut by a laser cutting method. .
[0011]
The plug with a high barrier pull ring of the present invention has a high barrier laminated film having a barrier vapor deposited polyethylene terephthalate film layer as an intermediate layer on at least the entire lower surface of a sealing plate provided inside the spout pouring cylinder. As a result, the heat resistance and pressure resistance when filling the contents are excellent, and the protection of the contents during long-term storage and distribution at room temperature is good. Also, when opening, since the position corresponding to the annular thin weak line provided on the sealing plate of the polyethylene terephthalate vapor-deposited base film of the high barrier laminated film is cut, it is easily provided on the sealing plate of the spout with a pull ring. The opened annular thin brittle line can be broken and opened.
[0012]
In addition, as shown in FIGS. 1A and 2, the stopper (10) with a high barrier pull ring of the present invention is attached to the liquid paper container (20) by the opening of the inclined plate (22) at the top of the container. First, a spout cylinder (120) of a spout (100) into which a cap is screwed is projected from the plug mounting hole (23), and a temporary fixing projection (111) provided on the outer peripheral surface at the upper end of the annular pedestal (110). ) (Usually 4 pieces) and temporarily fixed, and then a horn of an ultrasonic sealing device is crimped on the outer peripheral surface of the spigot mounting hole of the container, and the flange (140) and the inner surface of the container are Is thermally fused.
[0013]
【The invention's effect】
The plug with a high barrier pull ring of the present invention is composed of a cap and a spout, and is used to protrude at the pouring position of the liquid paper container. However, since it is excellent in heat resistance, pressure resistance, and gas barrier properties, it has a high temperature of the contents. It is resistant to filling, has good protection of contents during long-term storage and distribution at room temperature, and can be easily opened with a pull ring when the container is opened.
[Brief description of the drawings]
FIG. 1A is a cross-sectional view of one embodiment of a spout of a plug with a high barrier pull ring of the present invention, and FIG. 1B is an explanatory view showing the configuration of one embodiment of the high barrier laminated film. (C) is an explanatory view showing a configuration of an embodiment of another high barrier laminated film.
FIG. 2 is a perspective view of an example of a liquid paper container with a stopper.
FIG. 3 is a cross-sectional view of a spout with a pull ring of a conventional plug.
[Explanation of symbols]
10 Plug 20 Liquid paper container 21 Body 22 Slant plate 23 Plug mounting hole 100 Spout 110 Ring base 111 Temporary fixing protrusion 120 Discharge cylinder 121 ... male screw 130 ... sealing plate 131 ... annular notch 132 ... annular thin weak line 133 ... pillar 134 ... pull ring 140 ... flange 200 ... cap 300 ... high barrier laminated films 310, 330 ... Polyethylene layer 320: evaporated polyethylene terephthalate film layer 321: evaporated base material polyethylene terephthalate film layer 322: evaporated layer 323: printed layer G: gate position

Claims (3)

In a spout with a pull ring, a cap is screwed onto the spout, wherein the spout has a spouting tube erected on an annular pedestal portion having a flange on the outer peripheral surface at a lower end, and a lower inside of the spouting tube is sealed with a sealing plate. The sealing plate is provided with a notch having a V-shaped vertical cross section from the upper surface at a predetermined opening position of the sealing plate to form an annular thin weak line on the lower surface, and an uppermost layer and a lowermost layer on at least the entire lower surface of the sealing plate. Having a polyethylene layer, an intermediate layer having a barrier-deposited polyethylene terephthalate film layer, and the barrier-deposited polyethylene terephthalate film layer corresponding to the annular thin weak line provided on the sealing plate of the polyethylene terephthalate-deposited base film. A high-barrier plug with a pull ring, characterized in that a high-barrier laminated film whose position is cut is heat-sealed by insert injection molding. The position corresponding to the annular thin weak line provided on the sealing plate of the polyethylene terephthalate vapor-deposited base film of the barrier-deposited polyethylene terephthalate film layer, wherein the high-barrier laminated film is in a state of a laminated film before insert injection molding, 2. The plug with a high barrier pull ring according to claim 1, wherein the plug is selectively cut by a laser cutting method. The high-barrier laminated film, after insert injection molding, in the state of a laminated film thermally fused to the spout, the barrier-deposited polyethylene terephthalate film layer of the polyethylene terephthalate-deposited base film, the annular thin-walled fragile member provided on the sealing plate. 2. The plug with a high barrier pull ring according to claim 1, wherein a position corresponding to the line is selectively cut by a laser cutting method.

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