JPH0625152U - Gas vent plug - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to a gas venting stopper 1, in which a gas is released due to a pressure increase in the can when the can is in a vertical state to prevent damage to the can, and when the can is lying down, the contents of the can are gas. This is a tape so as not to flow out from the removed portion 1f. [Structure] Bottom wall 1 of synthetic resin main body 1a having elasticity
A gas vent plug in which a hollow cylindrical column 1e protruding upward is formed in a part of b, and a gas vent 1f is formed by a notch formed by cutting only the upper surface of the column 1e.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gas vent plug attached to a can mouth.

[0002]

[Prior art]

 As disclosed in Japanese Utility Model Publication No. 57-11878, a conventional gas vent plug comprises a synthetic resin plug body having elasticity and a bottom wall, a side wall, and a flange portion, and one portion of the bottom wall is an upper portion. To form a hollow cylindrical column, a gas vent is formed at the upper part of the column by cutting to the side surface, and a ridge extending upward from the flange is formed. It is known to form a degassing portion by cutting to the lower end of the portion. The gas vent plug is attached to the can mouth, and is covered with a cap with an elastic hooking piece. When the pressure inside the can rises, the gas vent plug opens the gas vent in the column, releases the gas in the can to the outside of the column, and further opens the gas vent in the ridge. It is intended to prevent damage to the can as it is released to the outside of the chamber and the pressure inside the can increases.

[0003]

[Problems to be solved by the device]

 However, since such a gas vent plug is provided with a gas vent part by cutting to the side of the column part and is always open slightly, if rainwater enters the gas vent port, it will go into the column part. There is an inconvenience that the gas can easily enter from the gas vent, and further, when the can is laid down sideways, the contents of the can easily flow out from the gas vent of the column.

[0004]

[Means for Solving the Problems]

 In order to solve such a problem, the present invention comprises a synthetic resin main body (1a) having elasticity and comprises a bottom wall (1b), a side wall (1c) and a flange portion (1d). In the gas vent plug (1), a hollow cylindrical column (1e) is formed by projecting a part of the above) to form a gas vent (1f) cut into the column (1e). The gas venting part (1f) is formed by a notch formed by cutting only the upper surface of the column part (1e).

[0005]

[Action]

 According to the gas vent plug (1) of the present invention, when the can is laid down sideways, the adhesion of the cut surface of the gas vent (1f) of the column (1e) prevents the contents of the can from flowing out, If the pressure inside the can rises when the can is in a vertical position, the gas vent (1f) of the column (1e) will open slightly before the can is damaged, and gas inside the can will be released to prevent damage to the can. Can be stopped.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. Reference numeral 1 denotes a synthetic resin gas vent plug having elasticity such as polyethylene resin, and its main body 1a is composed of a bottom wall 1b, a side wall 1c and a flange portion 1d. A hollow cylindrical column 1e is formed by projecting the central portion of the bottom wall 1b upward. The degassing portion 1f is formed by a notch formed by cutting only the upper surface portion of the column portion 1e. Two protrusions 1g and 1h are formed on the upper surface of the flange 1d. Gas vents 1i and 1j are formed by notches formed by cutting only the upper portions of the protrusions 1g and 1h. 2 is a can mouth, which is fixed to the can top plate. Reference numeral 3 denotes a cap with elastic hook-stop pieces, in which the upper wall 3a is freely retractable and has elastic hook-stop pieces 3b at equal intervals on the side wall. The gas vent plug 1 is attached to the can mouth 2, and a cap 3 with an elastic hook stopper is covered on the can vent 2.

The gas vent plug 1 can prevent the contents of the can from flowing out due to the adhesive force of the cut surface of the gas vent 1f of the column 1e when the can is laid down sideways. That is, the degassing portion 1f is formed by the notch formed by cutting only the upper surface of the column portion 1e. In other words, it is surrounded by the side wall portion of the column portion 1e having a large strength, so that the cut surface The adhesive force can be set to be larger than the pressure of the contents of the can, which can prevent the contents of the can from flowing out. Further, in the gas vent plug 1, when the pressure inside the can rises in a normal state of the can, the gas vent 1f of the column 1e is slightly opened before the can is damaged, and the gas in the can is It is released to the outside through the gas vent 1f and can be prevented from being damaged. In this case, the pressure at which the gas escapes is slightly higher than that of the conventional gas vent plug, but it has a sufficient function of preventing damage to the can. Furthermore, since the gas vents 1i and 1j are provided only above the ridges 1g and 1h, rainwater and the like rarely enter the ridges 1g and 1h when the can is left outdoors. . Moreover, even if rainwater or the like enters the ridges 1g and 1h, the pressure of rainwater or the like does not enter the can against the adhesion of the cut surface of the gas vent 1f of the column 1e.

[0008]

[Effect of device]

 According to the present invention, it is possible to properly prevent the pressure rise in the can when the can is in a normal vertical state, to prevent the can from being damaged, and to prevent the contents of the can from flowing out when the can is laid down. It is possible to provide a gas vent plug capable of

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a gas vent plug of the present invention in a state of being attached to a can mouth.

FIG. 2 is a plan view of a single gas vent plug of the present invention.

[Explanation of symbols]

1 ... Gas venting plug 1a ... Synthetic resin main body 1b ... Bottom wall 1c ... Side wall 1d ... Flange part 1e ... Strut part 1f ... Gas venting part 1g ... Projection part 1h ... Projection part 1i ... Gas venting part 1j ... Gas Pull-out part 2 ... Can mouth 3 ... Cap with elastic hook stopper 3a ... Upper wall 3b ... Elastic hook stopper

Claims (1)

[Scope of utility model registration request] 1. A synthetic resin main body (1a) having elasticity.
The bottom wall (1b), side wall (1c) and flange (1d)
And a part of the bottom wall (1b) is projected upward to form a hollow cylindrical columnar portion (1e), and the columnar portion (1e)
In a gas vent plug (1) formed by forming a gas vent (1f) that is cut into the inside, the gas vent (1f) is formed by notching only the upper surface of the column (1e). A gas vent plug.