JPH0352689Y2 - - Google Patents

Description

[Detailed explanation of the idea]

(Field of Industrial Application) The present invention relates to a glass container for storing coffee, tea, etc., and in particular to a glass container for vacuum packs that can guarantee the quality of the contents for a long period of time even after opening. (Prior Art) A variety of containers have been commercially available for storing instant coffee, regular coffee, etc. For example, glass containers are widely used for instant coffee;
Can containers are widely used for regular coffee. These containers have a structure in which a thin paper seal called an inner seal is glued to the top of the container to maintain airtightness, or a thin metal plate called a pull top is attached to the top of the container. The structure is a tight fit that maintains airtightness. Therefore, although these containers maintain their airtightness during distribution, once the seal is peeled off or the metal plate is removed and the container is opened, it is impossible to reseal it with the outer lid. It becomes possible,
The drawback was that the contents could not be protected from moisture in the outside air. Furthermore, since the can container mentioned above is opaque, it is not possible to see inside.
Another drawback was that it was not possible to determine the amount of content remaining. (Problems to be solved by the invention) The present invention solves the above-mentioned conventional problems and can be resealed even after opening.
The purpose of the present invention is to provide a glass container for vacuum packs that can guarantee the quality of the contents for a long period of time, is extremely easy to handle, and allows the inside to be seen to determine the remaining amount of the contents. It was completed as. (Means for Solving the Problems) The present invention is a glass container for vacuum packs in which a thin plate-like inner lid is placed on the mouth of a glass container having a wide mouth, and an outer lid is further screwed onto the inner lid. The container is characterized in that an adhesive layer is formed between the container spout and the inner lid, a leak hole is provided in the inner lid, and a sealing tab is sealed in the leak hole. That is. (Embodiment) Next, the present invention will be described in detail with reference to the illustrated embodiment. As shown in FIG. Aluminum plate through adhesive layer 3,
Alternatively, a thin inner lid 4 made of a tin plate or the like is placed. As shown in FIGS. 2 and 3, the inner lid 4 has a leak hole 5 transparent therein, and a sealing tab 6 made of a thin piece of aluminum is sealed with adhesive. It is worn. An outer cover 7 is further screwed onto the outside of the inner cover 4, and a common type of screw such as a single thread screw or a multi-thread screw is used for this screw engagement. An adhesive layer 8 made of a sealing compound is provided at a portion of the outer lid 7 corresponding to the container opening 2, and when the outer lid 7 is screwed together, its elasticity allows the inner lid 4 to be attached to the container opening. It has a structure that makes it stick to the top 2. On the other hand, a protrusion 9 is formed on the bottom of the glass container 1, and the protrusion 9 is formed on the upper surface of the outer lid 7.
A concave portion 10 is formed in which the glass containers can be stacked, and when the glass containers are stacked, the concave and convex portions fit into each other and the structure is such that the glass containers can be stacked securely. (Function) For the product configured in this way, the contents of regular coffee etc. (capacity 510ml) are placed in a glass container 1.
After filling the container, the container was placed in a vacuum desiccator with the inner lid 4 placed on the top 2 of the container, and vacuumed for about 3 minutes using a vacuum pump to create a vacuum state of 75.0 mmHg (gauge pressure). Thereafter, the leak hole of the vacuum desiccator was instantly opened to the atmosphere, the inner lid 4 was tightly attached, and the inside of the glass container was maintained in a vacuum state. As a result of measuring the degree of vacuum by inserting a vacuum degree measuring device ("Bakyum Cage" manufactured by Saitama Manufacturing Co., Ltd.) from above the inner lid 4 of the sample container (n = 5) filled with regular coffee and brought into a vacuum state, As shown in Table 1, it was found that the degree of vacuum was almost completely maintained.

[Table] When opening this container, remove the outer lid 7 and then peel off the tab 6 of the inner lid 4 to open the leak hole 5 to the atmosphere. The vacuum state is instantly released and the inner lid 4 can be easily opened. It can be removed. At this time, since the tab 6 is only sealed to the leak hole 5 with an adhesive, it can be peeled off very easily. Furthermore, even after the container is opened, the inside of the container remains completely isolated from the outside air through the adhesive layer 3 of the inner lid 4 and the adhesive layer 8 of the outer lid 7, so the contents may not become damp. It is possible to maintain quality for a long period of time. Furthermore, since this container is made of transparent glass, it has the advantage that the remaining amount of contents can be seen at a glance during use. On the other hand, the upper surface of the outer lid 7 is formed with a recess that can fit into the protrusion 9 provided on the bottom surface of the glass container 1, so that when the containers are stacked, the recess and recess fit into each other. This makes it possible to securely stack the container, making it extremely easy to transport or handle the container. (Effects of the invention) As is clear from the above explanation, the present invention can maintain a complete vacuum state by forming an adhesive layer and using an inner lid with transparent leak holes. The package can be opened extremely easily, and even after the package has been opened, it can be resealed to ensure the quality of the contents for a long period of time. Furthermore, according to the present invention, the remaining amount of the contents during use can be seen at a glance, and stacking is possible, making it easy to handle. As described above, the present invention has extremely great practical value as a vacuum pack container that solves the conventional problems.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a partially cutaway front view with the outer cover removed; FIG. 2 is a partially enlarged sectional view with the outer cover covered; FIG. 3 is a plan view of the inner lid. 1: Glass container, 3: Adhesive layer, 4: Inner lid, 5:
Leak hole, 6: Tab, 7: Outer lid, 9: Convex part, 1
0: recess.

Claims (1)

[Scope of Claim for Utility Model Registration] A glass container for a vacuum pack in which a thin plate-like inner lid is placed on the top of the glass container having a wide mouth, and an outer lid is further screwed onto the lid. A vacuum pack characterized in that an adhesive layer is formed between the roof of the mouth and the inner lid, a leak hole is provided in the inner lid, and a sealing tab is sealed to the leak hole. glass container. A glass container for a vacuum pack according to claim 1, characterized in that a recess is formed on the upper surface of the outer lid so that the bottom of the glass container can be stacked.