JPH0722921U - Liquid paper container with spout - Google Patents

Abstract

(57) [Summary] [Purpose] Regarding opening of liquid paper container mouth stoppers. [Structure] In a liquid paper container mainly composed of paper, a predetermined pouring hole portion having a linear perforation or a cut line is provided at least at the center of the sheet, and the back surface of the pouring hole planned portion is broken. A possible sealing film is attached, and the surface of the expected pouring hole is composed of a pouring wall body and a flange portion horizontally provided outward from the lower end of the pouring wall body. An opening flap having a protruding blade on the lower surface is attached to the inner wall of the pouring wall body through a thin hinge, and a stopper is attached horizontally. A liquid paper container with a stopper, characterized in that a sheet to which a sealing film has been attached and which is broken from perforations or cuts is opened to the left and right to be locked by an opening flap to form a pouring hole.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stopper for a liquid paper container.

[0002]

[Prior art]

 Conventionally, a liquid paper container that holds sake or juice is assembled from laminated sheets mainly of paper, and a spout is attached to a part of the container. As an example of a type in which the spout is attached to a part of the top surface of the paper container from the front side, it is described in Japanese Utility Model Publication No. 58-37828, but as shown in FIG. 10, the window hole 101 is punched out. A rupturable sealing film 102, which is slightly larger than the window hole 101, is attached from the back surface, and the flange portion 104 of the plug 100 having the tubular opening blade 103 is heat-sealed around the window hole 101 from the front surface. And attached. As shown in FIG. 11, the opening blade 103 is vertically pushed down with a finger to break the sealing film 102 into a substantially window-like shape to form a pouring hole 105.

[0003]

[Problems to be solved by the device]

 However, the sealing film ruptured in the shape of a window is left unbroken at one end of the ruptured film so as not to fall into the container. In this way, as shown in FIG. 11, the broken sealing film may hang down at the pouring hole, and in some cases, the pouring hole may be blocked when pouring the liquid in the container. Also, by breaking the sealing film with the opening blade, the tip of the opening blade protrudes into the container and does not return to the original position, so the opening blade interferes and the liquid is poured until the end. It may remain uncut. Further, in order to surely break the sealing film, it is necessary to increase the height of the cylindrical opening blade, which increases the height of the spigot itself, resulting in a large protrusion from the container.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a liquid paper container including a sheet mainly composed of a paper, and at least a center portion of the sheet is provided with a predetermined perforation hole portion having a linear perforation or notch, A rupturable sealing film is attached to the back surface of the planned pouring hole, and the pouring wall body and the lower end of the pouring wall body face outward on the surface of the pouring hole planned portion. An opening flap, which is composed of a horizontally installed flange part and has a protruding blade on the lower surface, is attached to the inner wall of the spout wall body through a thin hinge, and a horizontally installed spout is attached, and the opening flap is pushed down. Is characterized in that the sheet to which the sealing film is attached is opened to the left and right by breaking from at least a straight perforation or cut at the planned pouring hole, and the pouring hole is formed by locking with the opening flap. Liquid container with spout

[0005]

[Action]

 Since the sheet with the sealing film attached has a certain thickness, it is elastic, and the sheet with the sealing film at the planned pouring hole is forcibly pushed to the left and right to open and return. By preventing with a flap, a pouring hole can be formed.

[0006]

【Example】

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

FIG. 5 shows a liquid paper container assembled from sheets having a thickness of 600 μm, which is mainly composed of paper made of polyethylene (front surface) / paper / polyethylene / aluminum foil / polyester / polyethylene (back surface). As shown, a linear cut 51 was formed in the center of the sheet, and cuts 52 extending from the both ends of the straight cut 51 to the left and right respectively were made into the planned pouring hole portion 50. As a sealing film 53, a polyethylene film slightly larger than the planned pouring hole 50 was heat-sealed and attached to the back surface of the planned pouring hole 50.

The spout 10 is made of a plastic such as polyethylene by injection molding, and as shown in FIGS. 1 to 4, a straight vertical wall body 11 and an arcuate vertical wall body on the side opposite to the vertical wall body 11. It is composed of a claw-shaped pouring wall body 13 having a wall body 12 and having an open top and bottom, and a flange portion 14 which is provided horizontally from the lower end of the pouring wall body 13 toward the outside. There is. On the inner wall of the pouring wall body 13, a straight vertical wall body 11 is provided with a thin-walled hinge 15 on the bottom surface, and a protruding shape is provided with a protruding blade 16 on the lower surface. The flap 17 is provided horizontally.

Further, a linear vertical wall body 18 for the lid is provided on the flange portion 14 in parallel with the linear vertical wall body 18 of the pouring wall body 13, and the linear vertical wall body 18 for the lid is provided. A lid 20 was provided on the upper part of the via a thin hinge 19 for the lid. Inside the lid 20, a peripheral projection 21 is attached which can seal the inside of the pouring wall 13.

The surface of the planned pouring hole 50 and the planned pouring hole 50 are arranged so that the protruding blade 16 of the opening flap 17 is located on the linear cut 51 in the center of the planned pouring hole 50. The flange portion 14 of the spout 10 was placed around and heat-sealed, and the spout 10 was attached. As shown in FIG. 9, in the gable-shaped liquid paper container 91, the arcuate vertical wall body 12 of the pouring wall body is located below and the linear vertical wall body 11 is located above.

In order to form the pouring hole 61, as shown in FIGS. 6 to 8, when the tip of the opening flap 17 inside the pouring wall body is pushed down with the thin-walled hinge portion 15 as a fulcrum, it is first projected. The blades 16 are cut along the straight cut 51 in the center of the planned pouring hole 50, and the cuts 52 extending from the both ends of the straight cut 51 to the left and right are torn, and the opening flap 17 spreads the sheet left and right. When the opening flap 17 is forcibly opened and the pushing of the opening flap 17 is stopped, the opening flap 17 stops at that position. When the opening flap 17 is pushed over the locking projection 22, the opening flap 17 is securely locked by the locking projection 22 and the end of the sheet opened to the left and right. In this way, the pouring hole 61 is formed, and the pouring hole 61 can be maintained as it is.

[0012]

As described above, according to the present invention, the film-attached sheet is opened and fixed to the left and right instead of breaking the film in the shape of a window hole, so that the hole is not blocked and the smoothing is achieved. Liquid comes out on the screen. In addition, the opening blade does not hinder the liquid from flowing out, and the liquid can be discharged to the end. Further, since the opening blade is of a pushing type, the height of the stopper can be made low, so that the stopper does not protrude from the container.

[Brief description of drawings]

FIG. 1 is a plan view of a mouth plug according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the spout of FIG. 1 taken along the line AA ′, in which the spout is attached to a planned pouring hole and the lid is opened.

FIG. 3 is a view in which the lid of the spout in FIG. 2 is closed.

FIG. 4 is a cross-sectional view of the spout of FIG. 1 taken along the line BB ′, showing a spigot attached to a planned pouring hole.

FIG. 5 is a plan view of a planned pouring hole in the embodiment of the present invention.

FIG. 6 is a plan view in which a pouring hole is formed in the embodiment of the present invention.

7 is a cross-sectional view taken along the line CC ′ of FIG.

FIG. 8 is a sectional view taken along the line DD ′ of FIG.

FIG. 9 is a perspective view of a liquid paper container according to an embodiment of the present invention with a mouth plug attached thereto.

FIG. 10 is a cross-sectional view showing a main part of a spigot in a conventional liquid paper container, with a lid removed.

FIG. 11 is a cross-sectional view in which the spout of FIG. 10 is opened to form a pouring hole.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Spigot 11 ... Straight vertical wall body 12 ... Arc-shaped vertical wall body 13 ... Pouring wall body 14 ... Flange part 15 ... Thin hinge 16 ... Projection blade 17 ... Opening flap 18 ... Straight line for lid Vertical wall body 19 ... Thin wall hinge for lid 20 ... Lid 21 ... Peripheral protrusion 22 ... Locking protrusion 50 ... Expected hole for pouring 51 ... Straight cut 52 ... Cut extending horizontally 53 ... Sealing film 61 ... Outlet 91 ... Gable-shaped liquid paper container 100 ... Spout 101 ... Window hole 102 ... Sealing film 103 ... Opening blade 104 ... Flange portion 105 ... Pouring hole

Claims (1)

[Scope of utility model registration request] 1. A liquid paper container comprising a sheet mainly of paper, wherein a predetermined pouring hole portion having a linear perforation or a cut line is provided at least at the center of the sheet, and the back surface of the pouring hole planned portion. A rupturable sealing film is attached to the surface of the expected pouring hole portion, and from the pouring wall body and the flange portion horizontally provided outward from the lower end of the pouring wall body. The opening flap having the protruding blade on the lower surface is attached to the inner wall of the pouring wall body through a thin hinge, and a stopper provided horizontally is attached and at least the straight line of the pouring hole planned portion is pushed down by pushing down the opening flap. A liquid paper container with a stopper, characterized in that a sheet to which a sealing film is attached is broken from the perforations or cuts and opened to the left and right to be locked by an opening flap to form a pouring hole.