JPH0789537A - Flat pouring out cap for paper container and its manufacture - Google Patents

Abstract

PURPOSE:To simplify the device whole body, reduce the price of a product by an efficient production of the product, and manufacture the product easily by applying a pressing force after an injection forming. CONSTITUTION:A flat pouring out cap A for paper container is an injection formed pouring out cap A, and a pouring out cap A main body consists of a thin part 1 for opening, an opening lid part 3 which is surrounded by a thin part 2 for pivotal supporting, and an attaching flange part 6 which is extended on the outer periphery. To such a main body, a grip part (b) for opening with a thin part at the root is formed in such a manner that the grip part (b) may be bent by the thin part and go along the pouring cap A main body, at the central inside of the thin part 1 for opening, on the side being confronted with the thin part 2 for pivotal supporting. As the manufacture of such a flat pouring out cap for paper container, the grip part (b) for opening with the thin part at the root is integrally injection-formed to be projected upward, at the central inside of the thin part 1 for opening on the side being confronted with the thin part 2 for pivotal supporting, and then, before the grip part (b) for opening is cooled and set, the grip part (b) is bent from the thin part at the root, and is set under a condition going along the pouring out cap A main body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat pour-out tool for a paper container injection-molded with a synthetic resin and a method for producing the same.

[0002]

2. Description of the Related Art A conventional paper container spouting tool, even if injection molded of synthetic resin, has a cap (C) having a pull ring in the spouting tube as shown in FIG. 9, for example. Alternatively, it was a base plate shape (D) or the like in which an opening knob as shown in FIG. 10 was projected upward.

[0003]

The conventional spouting tool (C) or (D) as described above has an overall height of about 20 mm from the attaching flange portion to the paper container body. Therefore, even if it can be attached in advance to the blank plate before assembling the paper container,
Since it projects about 20 mm, it is not suitable for a series of filling and sealing devices after being assembled into a rectangular tube and then pressed flat. Therefore, when using the conventional pour tool as described above, it is unavoidable to incorporate a supply attachment device for the pour tool in a series of filling and sealing devices.
Since this device is different from other devices for filling and sealing other liquids and is complicated, the device becomes large and complicated as a whole, and this is also priced for products packed in paper containers such as beverages. Is influencing on.

The present invention has been made in view of the above points, and by assembling the container body, supplying and mounting the pour tool, filling the content liquid, by making the pour tool an extremely thin flat shape. The purpose is to reduce the cost of the product by simplifying the entire device and improving the production efficiency of the product by omitting the supply and mounting device of the different and complicated spout from the series of devices for sealing. It is an object of the present invention to easily manufacture an extremely thin flat pour-out device with a knob, which is difficult to manufacture, by applying a pressing force after injection molding.

[0005]

In order to achieve the above object, in the present invention, an extremely thin flat shape (2.0 to 2.5 m
By adopting m), it is possible to attach it in advance to the blank plate before the assembly of the container body. This means that in the case of using a conventional dispensing device with a height of around 20 mm, a series of assembling, filling of the content liquid, and a sealing device are different from filling and sealing of the content liquid and a complicated dispensing device. This is because the entire device is simplified by omitting the supply and mounting device.

That is, according to the invention of a flat-shaped spout for a paper container, the spout is an integrally molded spout in which a synthetic resin is injection-molded and is surrounded by a thin portion for opening and a thin portion for pivotal support. An opening grip having a thin portion at the base portion inside the center of the thin portion for opening on the side of the thin portion for pivotal support with respect to the body of the spouting tool consisting of a lid portion and a mounting flange portion that spreads around the lid portion. The thin portion of the root portion is bent to form a state along the main body of the dispensing device, and in the invention of the method for manufacturing a flat dispensing device for a paper container, the thin portion for opening. The inside of the unsealing thin-walled portion on the side relative to the above-mentioned thin-walled pivoting portion, with respect to the spout body consisting of the unsealing lid portion surrounded by , With the opening gripping part that has a thin part at the root protruding upward, After injection molded integrally with the fat, before the gripping portion for the unsealing cooled and solidified, which takes the method of causing harden in a state along the dispensing body is bent from the thin portion of the root portion.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. The flat-shaped pour-out tool (A) for a paper container injection-molded by the method of the present invention is, for example, injection-molded from polyethylene, and has an overall height of 2.0 to 2.5 as shown in FIG.
It has a very thin flat shape of mm and has a large arc shape on both sides of one side of the rectangle in plan view as shown in FIG. The injection-molded flat pour tool (A) for a paper container is composed of a pour tool body (a) and an opening gripping part (b). The spout body (a) is provided on its lower surface with a thin portion (1) for opening over almost three sides, and a thin portion (2) for pivotal support is provided from both ends thereof, and these thin portions (1) and (2) The part surrounded by is the lid part (3) after opening.
Is the part that becomes. Around the outer periphery of the thin portion for opening (1) and the thin portion for pivotal support (2), a mounting collar to be welded to the inner edge portion (5) of the opening (4) of the container body (B) of the paper container. A section (6) is provided.

On the upper surface of the spout body (a), a projection similar to the outer shape of the attachment flange (6) is located outside the positions of the thin opening portion (1) and the pivotally supporting thin portion (2). (7), and this protruding portion (7) is a thin portion (2) for pivotal support from the center.
On the side of the position of (3), it is surrounded by a ridge (8), and the enclosed inside is a recessed part (9) which coincides with the upper surface of the mounting flange part (6). ) Is directed toward the side opposite to the position of the thin portion for pivotal support (2), and the depth is gradually reduced by the upward inclination of the lid (3), and the upper surface thereof coincides with the surface of the ridge (8). ing. In this concave part (9),
The opening-opening gripping part (b) having the knob opening (10) is free from the opening lid part (3), and the narrowed tip (12) of the gripping part (b) has a thin-walling part for opening. Inside the position (1), it is connected (13) with the spout body (a). A thin portion (14) is provided near the connecting portion (13) at the base of the opening gripping portion (b). In addition, the connecting part (1
The tip of 3) is inclined upward (15) to form a spout (16), and the tip of the spout (16) coincides with the upper surface of the opening grip (b). The central portion of the ridge (8) with respect to the free end (17) of the opening gripping part (b) is provided with a recessed part (18) for facilitating gripping of the gripping part (b).

Since it is difficult to injection mold the flat pour tool (A) in the state shown in FIGS. 1 and 2, it is shown in FIG. 3 in the present invention. Such an opening / closing grip (b) is injection-molded in the upright state, and the grip (b) should be attached to the thin-walled part (1) of the base before it is cooled and solidified.
4) The method is to bend it further, and to manufacture it by hardening it along the surface of the body (a) of the spouting tool. The flat pour tool (A) thus molded is extremely thin, and the gripping portion (b) thereof is sufficiently durable against repeated bending of the thin portion (14).

In the flat-shaped spouting tool (A ') for a paper container shown in FIG. 5, the spouting beak (16') on the upper surface at the position of the thin portion for opening (1 ') is the one shown in FIG. Unlike the above, it has a downwardly sloping surface (15 '), and there is a gap (about 0.7 mm) required for draining the effluent between its tip and the upper surface of the container body (B). In addition, the opening grip (b ') has a finger hook step (19) at the free end thereof, and a grip opening (10').
An engaging recess (20) is formed on the upper edge of the dispensing tool body (a '), while a locking protrusion (21) with which the engaging recess (20) is engaged is provided on the upper surface of the spout body (a'). It is provided. Even in such a flat-shaped pour-out tool (A ') for paper containers, the opening gripping part
(b ') is injection-molded with the gripping part (b') of the opening grip projecting upward as shown in FIG. 5, as in the case of the spout (A). Before the b ') cools and solidifies, bend from the thin portion (14') of the root part
Harden along the (a ') plane.

The thin flat pour-out tools (A) and (A ') having the above-mentioned constitutions are inserted into the blank plate before assembling the container body (B) through the opening (4), and the inner surface rim is Attach the flanges (6) and (6 ') to the part (5) and weld them. Since the spouts (A) and (A ') are attached to the blank plate before the container body (B) is assembled, the attachment device is a conventional assembled container body (B). ), It is not complicated to insert by inserting it from the inner surface, and therefore the attaching work is simple and efficient. Spouts (A), (A ')
The blank plate to which is attached is assembled into a rectangular tube like a normal case, and a series of filling is performed while being pressed into a flat shape.
Although it can be applied to a sealing device, it does not hinder the process because the spouting tool does not project as much as the conventional one. Such a pour tool (A),
The mounting position of (A ′) is the sloping roof of the paper container.

Next, the pouring of the content liquid will be described. In order to pour out the content liquid from the paper container body (B), first, in the pour-out tool (A), insert the fingertip through the recessed portion (18) to raise the opening gripping portion (b) to open the picking opening (10). When picking and pulling, a large pulling force is applied to the connecting part (13) of the thin tip part (12), so that the thin part (1) for opening at this part has an initial opening, and this opening is on both sides. The thin parts (1) and (1) are spread and reach the thin part (2) for pivotal support to be opened. The opened lid part (3) hooks the gripping part (b) on the top sealing part (22) of the container body (B) as necessary, and locks it. When the container body (B) is tilted, the content liquid flows out from the pouring beak (16). When the opened lid part (3) is returned to its original state and the lid is closed, the grip part (b) returns to its original state and comes to follow the surface of the body (a) of the dispensing tool, that is, the surface of the lid part (3). Further, in another embodiment shown in FIG. 5,
Put your fingertip on the step (19) of the opening grip (b ') to remove the engagement recess (20) from the locking projection (21) of the spout body (a'), and then open the knob opening (10 '). Pinch, and pull the grip (b ') to open from the thin-walled opening (1'). After tilting the container body (B) and letting out the content liquid from the pouring beak (16 '), close the lid and return the opening gripping part (b') to the engaging recess
Lock (20) on the locking projection (21).

[0013]

EFFECTS OF THE INVENTION The flat pour-out device for a paper container of the present invention is integrally injection-molded entirely with synthetic resin. However, it is injection-molded with the opening gripping part protruding from the pourer body. , As it is cooled and does not solidify, it is bent from the thin portion at the root part of the joint part of the opening gripping part with the spout body, and is solidified along the spout body with respect to the spout body as a whole. It can be made into an extremely thin flat shape, which allows it to be attached in advance to the blank plate before assembly of the paper container body, and after this blank plate is made into a square tube shape, it is pressed in a flat shape. Since stacking and stacking can be applied to a series of filling and sealing devices as in the past, it is possible to omit the supply and attachment devices of different and complicated spouts in the conventional series of devices, and thus work efficiency is improved. To raise It is possible to lower the production cost of paper packaged product of the beverage liquid by. Moreover, the opening gripping portion is injection-molded in a state of projecting upward with respect to the spout body, and before the gripping portion cools and solidifies, it is bent and solidified from the thin portion of the root portion. Therefore, it is possible to easily obtain a flat-shaped spouting tool with the opening gripping portion along the spouting tool body by a simple means.

[Brief description of drawings]

FIG. 1 is a perspective view of a flat-shaped spout for a paper container manufactured by the method of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a sectional view similar to the above during a molding process.

FIG. 4 is a perspective view showing a cross section in a state of being attached to a container body.

FIG. 5 is a cross-sectional view similar to FIG. 3 of a pouring tool of another form.

FIG. 6 is a sectional view showing a section similar to that of FIG. 4 above.

FIG. 7 is a perspective view of a state in which the spout is attached to the container body.

FIG. 8 is a perspective view showing a state in which the grip portion of the lid portion opened as described above is locked to the top sealing portion.

FIG. 9 is a perspective view of a conventional dispensing tool.

FIG. 10 is a perspective view of a conventional pouring tool.

[Explanation of symbols]

 A spouting tool B paper container body C conventional spouting tool D conventional spouting tool a spouting tool body b opening gripping section 1 unsealing thin section 2 pivotally supporting thin section 3 lid section 4 opening 5 inner surface edge section 6 mounting collar Part 7 Projection 8 Ridge 9 Recess 10 Opening 12 Tip 13 Connecting part 14 Thin part 15 Inclined surface 16 Spout beak 17 Free end 18 Recessed part 19 Finger step 20 Engagement recess 21 Engagement projection 22 Top seal

Claims (2)

[Claims] 1. An integrally-molded pouring tool made by injection-molding a synthetic resin, comprising: an opening lid part surrounded by a thin part for opening and a thin part for pivotal support, and a mounting flange part spreading on the outer periphery thereof. With respect to the main body of the dispensing tool, the opening grip having a thin portion at the root is bent inside the center of the thin portion for opening on the side with respect to the thin portion for pivotal support, and is bent from the thin portion at the root and poured. A flat dispensing tool for paper containers, characterized in that it is formed along the dispensing tool body. 2. With respect to the spouting tool main body, which comprises an unsealing lid portion surrounded by the unsealing thin portion and the pivotally supporting thin portion, and a mounting brim portion that extends around the outer periphery of the unsealing lid portion, the pivoting thin portion side Inside the center of the thin opening part on the side, the opening grip part with the thin part at the root is projected upward, and after injection molding with synthetic resin, the opening grip part is not cooled and solidified. A method for manufacturing a flat-shaped spouting tool for a paper container, characterized in that it is bent from a thin-walled portion of its root portion and hardened in a state along the pouring body.