JPH08113261A - Lid member for container - Google Patents

Abstract

PURPOSE: To obtain a lid member for a container, which is reusable to reduce the cost and allows improving its reliability on hygiene and safety for use of it. CONSTITUTION: A lid member 1 consists of a spout 2 and a cap 3 to open and close the spout 2. The spout 2 is removably stuck on a paper container main body 10 with an adhesive sheet 4 and a pin 3b to make a hole 6 in the container main body 10 is integrally molded into one piece with the cap 3.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid member for a paper container containing, for example, drinking water.

[0002]

2. Description of the Related Art In recent years, a recyclable paper pack has been widely used as a container for storing various beverages such as milk, juice, soft drinks and liquor. This type of paper pack is shown in FIG.
As shown in FIG. 3, a container having a sealed structure is generally formed by bending an upper portion of a rectangular tube-shaped container body 10 to form a roof shape and gluing an upper end edge 10a thereof. When opening such a paper-made pack, conventionally, the upper edge 10a is opened outward from one end to the left and right, and the glued portion 11 of the left and right upper edge 10a is peeled off, whereby a beak-shaped pouring is performed. The outlet 12 is formed (the one-dot chain line in FIG. 5 and →
See the mark).

[0003]

By the way, in the above-mentioned conventional paper-made pack, when bacteria are attached to the spout when it is opened and closed by hand, or when it is mixed into the inside, it is unsanitary and accidentally falls. There is a problem that the contents overflow. Furthermore, if the spout is left open after opening the bag, there is a problem that dust and dirt easily enter and it becomes unsanitary. Here, in order to solve the problem of unsanitary conditions and the problem of overflowing when falling, it is conceivable to attach an opening / closing lid to the paper pack in advance. However, if an opening / closing lid is attached to each paper pack, the cost will rise.

The present invention has been made in view of the above conventional circumstances, and an object of the present invention is to provide a lid member for a container which can secure hygienic reliability and safety at the time of falling without increasing the cost. There is.

[0005]

According to the present invention, in a container lid member comprising a spout and a cap for opening and closing the spout, the spout can be attached to and detached from a paper container body with an adhesive sheet interposed. It is characterized in that a pointed portion for making a hole in the container body is integrally formed on either the spout or the cap.

The pressure-sensitive adhesive sheet includes polybutene (for example, Polybutene 300R manufactured by Idemitsu Petrochemical Co., Ltd.) and amorphous polyalphaolefin (for example, UB manufactured by Ube Lexen Co., Ltd.).
ETAC UT2780) in a predetermined ratio, or a composition of polyisobutylene resin (for example, Vistanex manufactured by Nippon Butyl Co., Ltd.) and natural rubber can be used. These compositions can be repeatedly used while ensuring adhesiveness to a paper container, and are safe from the viewpoint of food hygiene. In the above combination, the blending ratio of both polymers is different depending on the tackiness and viscosity of the polymer such as polybutene or isobutylene that imparts tackiness, the softening point of the polyalphaolefin or natural rubber blended therein, and the low temperature characteristics. However, specifically, for example, when the above polybutene 300R and UBETAC UT2780 are mixed, a mixture of 5:95 to 1: 3 may be mentioned as an example. In this example, if the polybutene is less than the above blending ratio, the tackiness becomes too low and it becomes difficult to use, and if it is more than this, the tackiness becomes too strong and it is not easy to remove the spout from the container body, and the fluidity is low. Since it becomes large, the moldability into a sheet shape deteriorates and it cannot be used.

[0007]

To attach the lid member of the present invention, first, an adhesive sheet is attached to the container body to fix the spout, and in this state, the tip of the cap is inserted into the spout to form a hole in the container body. To do. As a result, a spout is formed. When drinking, drinking water or the like is poured out from the spout, and then a cap is attached to the spout to seal it. When the container becomes empty, the spout is removed together with the adhesive sheet, and the spout is attached to a new container. Here, in the case where the spout is integrally formed with the spout, a hole is formed at the same time when the spout is attached.

According to the lid member for a container of the present invention, the spout is detachably attached to the main body of the paper container via the adhesive sheet, and the point is integrally formed on either the spout or the cap. As described above, one lid member can be repeatedly used, and the cost can be significantly reduced as compared with the case where the opening / closing lid is attached to each container. Further, since the spout can be surely sealed with the cap, it is possible to solve the hygiene concern due to the intrusion of dust or dust, and the contents will not overflow even if the product falls down.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 4 are views for explaining a lid member for a container according to an embodiment of the present invention. FIG. 1 is a cross-sectional view showing the lid member according to the first embodiment, and FIG. 2 is a lid member according to the first embodiment. FIG. 4 is a view showing an attached state, FIG. 3 is a sectional view showing an attached state of the lid member of the second embodiment, and FIG. 4 is a perspective view showing an attached state of the lid member.

Embodiment 1 A lid member 1 of this embodiment is composed of a spout 2 and a cap 3. The spout 2 has a male thread formed on an outer peripheral surface of a cylindrical portion 2a and an outer peripheral edge of a lower end of the cylindrical portion 2a. And a flange portion 2b are integrally formed. Here, acrylic resin is suitable as a material for the spout 2 and the cap 3, but the material is not limited to this as long as it is safe in terms of food hygiene and is non-polluting. For example, a synthetic resin having a predetermined hardness or stainless steel. A metal such as steel or aluminum may be adopted.

An adhesive sheet 4 is adhesively fixed to the lower surface of the flange portion 2b of the spout 2. As the pressure-sensitive adhesive sheet 4 of this example, a composition composed of Polybutene 300R manufactured by Idemitsu Petrochemical Co., Ltd. and UBETAC UT2780 manufactured by Ube Lexen Co., Ltd. was used. The compounding ratio of the both needs to be within the range of 5:95 to 1: 3.

The pressure-sensitive adhesive sheet 4 thus manufactured
Is safe in terms of food hygiene, is non-polluting, has excellent sealing properties when applied, and can be repeatedly used without deteriorating the tackiness even after washing with water. Further, a silicone release paper 5 is provided on the lower surface of the adhesive sheet 4.
Is attached, and it is designed to be removed when attaching. The pressure-sensitive adhesive sheet 4 may be formed separately from the spout 2, and the release paper 5 may be attached to both surfaces of the pressure-sensitive adhesive sheet 4.

The cap 3 is formed by integrally forming a cylindrical pointed portion 3b extending along the axial center of the top wall of the cap body 3a, which is formed with a female screw that is openably and closably screwed to the spout 2. It is configured. An inclined surface that intersects the axis of the pointed portion 3b at an angle is formed at the tip end portion of the pointed portion 3b, which has a sharp tip 3c.

Next, a method of using the lid member 1 will be described. In the present embodiment, the case where the invention is applied to a paper pack that stores various drinks such as milk and juice described above will be described as an example. This paper pack is a rectangular tube-shaped container body 10
The upper part is bent like a roof, and the upper edge 10a of this is glued, and the basic structure is the same as the conventional one.

First, the release paper 5 of the spout 2 is removed to expose the lower surface of the adhesive sheet 4, and the adhesive sheet 4 is pressed and adhered to the upper surface 10b of the container body 10 to fix the spout 2. Next, the tip 3b of the cap 3 is attached to the spout 2
Then, the tip 3c of the tip 3b is pushed into the container body 10 (see FIGS. 1 and 4). Then, the tip 3c pierces the paper of the container body 10 and further presses the pointed portion 3b so as to screw it in, whereby the hole 6 as a spout is formed. In this case, the cutout piece 10 formed by the hole 6
The c is not broken, and a part of it remains connected (see FIG. 1).

When drinking next, drinking water or the like is poured out from the spout 2, and then the cap 3 is screwed into the spout 2 to close it. This prevents dust and dirt from entering through the spout 2, and will not overflow even if it falls.

When the drinking water or the like becomes empty, the spout 2 is removed together with the adhesive sheet 4. Here, the spout 2 and the cap 3 are washed with water to remove the deposits. At this time, the adhesive surface of the adhesive sheet 4 can be washed with water, and even if it is used after drying, the adhesive can be adhered. There is no reduction in power. After that, the lid member 1 is used as it is for a new container body.

According to this embodiment, the adhesive sheet 4 of the spout 2 is attached to the container body 10, and the cap 3 is placed inside the spout 2.
By pressing the pointed portion 3b of the
Since the lid member 1 can be attached by a simple operation, and the spout 2 can be reliably closed by the cap 3, dust and the like do not enter, and drinking water overflows even if it falls. Nothing.

Further, in this embodiment, since the spout 2 can be attached and detached by the adhesive sheet 4, one lid member 1 can be repeatedly used, and when the conventional opening and closing lid is attached to each container. Compared with this, the cost can be significantly reduced. Further, since the pressure-sensitive adhesive sheet 4 is composed of a composition of polybutene and amorphous polyalphaolefin, it is possible to improve the sealing property at the time of sticking and to suppress the decrease in the adhesive force when washed with water, and to obtain a pressure-sensitive adhesive sheet. The life can be further extended.

Example 2 In Example 1 above, the pointed portion 3b was formed on the cap 3 side, but in Example 2, as shown in FIG.
The lid member 21 is formed by forming a pointed portion 23b on the side. The lid member 21 of the present embodiment comprises a spout 22 and a cap 23. The spout 22 has a male thread formed on the outer peripheral surface of the cylindrical portion 22a, and a flange-shaped flange portion on the outer peripheral edge of the lower end of the cylindrical portion 22a. 22b, and a pointed portion 23b is integrally formed thereunder. This point 2
The tip of 3b is formed with an inclined surface that obliquely intersects with the axis thereof, and thereby has a sharp tip 23c. In addition, a side hole 24 penetrating into the cylinder is provided on the side surface of the pointed portion 23b and immediately below the collar-shaped flange portion 22b so that drinking water in the container 10 can be poured out to the end. Has been. Further, the cap 23 has a female screw formed on the inner surface of its main body 23a,
After use, it can be screwed onto the spout 22 to close the lid. The material of the lid member 21 may be the same as that of the lid member 1 of the first embodiment.

When using the lid member 21, the spout 2
After peeling the release paper 5 from the adhesive sheet 4 attached to the flange-shaped flange 22b of No. 2, the tip 23c of the pointed portion 23b is strongly pushed into the container body 10 to form a hole, and at the same time, the adhesive sheet 4 serves as the spout 22. The container body 10 is firmly attached. In addition, after perforating the container body 10, the release paper 5 may be peeled off from the adhesive sheet 4, and the spout 22 and the container body 10 may be attached.

In the second embodiment, the spout 22 and the cap 23 are separate members, but the cap may be formed integrally with the spout by a hinge or the like.

[0023]

According to the container lid member of the present invention, a spout is detachably attached to a paper container body with an adhesive sheet interposed therebetween, and the container body is attached to either the spout or the cap. Since the pointed portion for forming the hole is integrally formed, one lid member can be repeatedly used, and the cost can be reduced, and
It has the effect of improving hygiene reliability and safety in use.

[Brief description of drawings]

FIG. 1 is a sectional view for explaining a container lid member according to a first embodiment of the present invention.

FIG. 2 is a view showing a mounted state of the lid member of the first embodiment.

FIG. 3 is a sectional view illustrating a container lid member according to a second embodiment of the present invention.

FIG. 4 is a perspective view showing a paper pack to which the lid member of the present invention is applied.

FIG. 5 is a perspective view showing opening of a conventional paper pack.

[Explanation of symbols]

 1, 21 Lid member 2, 22 Spout 3,23 Cap 3b, 23b Sharp 6 hole 10 Paper container body

Claims (1)

[Claims] 1. A spout and a cap for opening and closing the spout. The spout is detachably attached to a paper container body with an adhesive sheet interposed therebetween. A container lid member, characterized in that a pointed portion for forming a hole is integrally formed on the container body on one side.