JPH04189760A - Lid for container for receiving volatile substance - Google Patents

Abstract

PURPOSE:To control the evaporation of a volatile substance in a container and permit its contents to be preserved over an extended period of time, without changes in the contents taking place by causing at least the volatile substance contained in the container to exist in a liquid condition in a space between a lid and the container containing the volatile substance. CONSTITUTION:The same liquid volatile substance, e.g. water, as in a container, is made to exist in a lid 6. Any method of permitting the water to exist in the lid including the impregnation of a sponge provided in the lid with the water may be employed, preferably containing as much water as possible. By using a separating plate 7 in lieu of the water impregnated sponge, the occurrence of water leakage is avoided, no matter in which direction the water in the lid moves in an usual condition, a sufficient amount of the water can be held and a water saturated condition can be maintained in a space between the lid and the container.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a lid for a container for volatile substances.

(Prior art) Conventionally, when storing substances containing volatile substances in containers, in order to prevent the volatile substances from evaporating, the container is either covered with a double lid or sealed with paraffin in some cases, but this is not sufficient. Also, it was inconvenient.

(Problems to be Solved by the Invention) An object of the present invention is to solve the above-mentioned drawbacks of the prior art. Among containers for volatile substances, it is inconvenient and impractical to use double lids or seal with paraffin for containers such as writing utensils, adhesives, car wax, and shoe polish that contain volatile substances. .

For this reason, depending on the way the lid is installed and the environmental conditions, it may become unusable after several months, or even a month in some cases, resulting in the product not being used when needed, or having a short lifespan.
This is inconvenient and uneconomical.

(Means for Solving the Problems) The present invention has been made to solve the above-mentioned problems, and it is possible to remove at least the volatile substances contained in the container between the lid of the container containing the volatile substance and the space of the container. To provide a lid for a container for a volatile substance, which allows the volatile substance to exist in a liquid state. A detailed explanation will be given below using a water-soluble writing instrument as an example. Water-soluble writing instruments use dye water, which is a water-soluble dye dissolved in water, as ink. The writing instrument is a container, which is a writing instrument in which a multi-porous material impregnated with dye water, such as sponge or cotton, is enclosed in the shaft of the writing instrument, and the dye water is introduced by capillary action by connecting it to the container. Normally, while writing, even if some water evaporates from the part of the writing tip that comes into contact with the outside air, the dye inside will be removed. The water only transfers onto the paper, etc. while its concentration increases slightly, and does not interfere with writing. Naturally, if the lid is removed, water, which is a volatile substance, will evaporate from the writing tip, and the concentration of dye will increase in the writing tip, which will eliminate capillary action. Furthermore, the dye water in the container evaporates, leaving the container devoid of ink and making it unusable as a writing instrument. Even when the lid is closed, water vapor inside the lid leaks from the gap between the writing instrument shaft and the lid due to temperature changes and water molecular diffusion, and the leaked water vapor is replenished by evaporation from the writing tip. The size of the gap between the shaft and the lid varies depending on how the lid is attached, and this affects the length of the writing instrument's lifespan, but it is basically the same. Also, each time the writing tip is used, the gas in the lid that was saturated due to the evaporation of volatile substances from the writing tip is replaced with fresh air, and after the writing tip is closed, evaporation continues from the tip until the inside of the lid is saturated. Due to various reasons, such as 0 or more, volatile substances evaporate from the tip, and a similar phenomenon occurs, albeit at a slower rate than when the lid is removed, and all the ink is used for writing. Ink usage efficiency is lower than in the case where the ink is used.

As a result of various studies, the present inventors have proposed the present invention, which will be explained below with reference to FIG. 1 using a water-soluble writing instrument as an example. In the figure, 1 is the shaft of the writing instrument, 2 is cotton impregnated with ink, 3 is the ink-impregnated cotton case, 4 is the writing tip, and 5 is the lid, showing the basic structure of a normal writing instrument. 0 The feature of the present invention is shown in 6 in the figure. 6
is the same liquid volatile substance as in the container, in this case water. 1 method to make water exist
For example, any method may be used, such as impregnating a sponge attached to the lid, but it is preferable to have as much water as possible.If the water in the lid decreases, it can be easily replenished. The partition plate 7 shown in Fig. 2 is provided to make the effect of the invention more remarkable, and is not limited to a cap-like shape as shown in Fig. 5. can also be used in a similar way.

(Function) In the present invention, the inside of the lid is always sufficiently saturated with volatile substances in the container, water in this example, even if air containing water vapor leaks from the gap between the lid and the shaft. Water is replenished by the evaporation of the water that exists in the lid space, so water evaporation from the chip does not substantially occur, and even when the lid is removed during use, the inside of the lid is always saturated with water. When using the partition shown in Figure 2, evaporation from the chips will not occur even when the lid is closed again.
As shown in 1.2-2, 5 Under normal conditions, the water inside the lid does not leak no matter which direction it is turned, and it can hold sufficient water and fill the space between the lid and the container. It is preferable to maintain the state of water saturation, and of course, it can also be used in combination with a sponge.
In that case, there is an advantage that water leakage is unlikely to occur even if the water is refilled too much. In addition, when the lid is removed, especially in the case of one chip, it is difficult for water to evaporate from the tip inside the lid, and furthermore, the diameter of the gap between the partition and the shaft is smaller than the original contact between the lid and the shaft. Since it is smaller and narrower than the container, water saturation can be easily maintained, and the steam inside the lid is less likely to leak to the outside. Most of them can be used effectively.

(Example) As an example, 10 out of 20 writing instruments using water-soluble ink having the basic structure shown in Figure 1 were filled with 0.5 grams of water in sponge 6 in Figure 1. impregnated with, on the other hand,
As a comparative example, 10 samples were prepared that were not impregnated with water. The lids of these writing utensils were all set slightly loosely in the same way, and after being left at room temperature for 1 month, they were written on regular paper. As a result, all 10 writing instruments with the sponge inside the lid impregnated with water were able to write smoothly, but 3 out of the 10 comparative examples.

I was able to write in a blurred state, but I was unable to write the remaining seven at all.

(Effects of the Invention) The present invention can effectively suppress the evaporation of volatile substances in a container by simple means, and enable storage for a long period of time without changing the contents of the container.

Convenient and economical. Furthermore, the present invention is not limited to writing instruments, but can be widely used and effectively applied to car wax lids, shoe polish lids, solid adhesive caps, and the like.

[Brief explanation of drawings]

Figures 1.2 and 2-1.2-2 are cross-sectional views showing one embodiment of the present invention. In Figure 1, ■ is the shaft of a writing instrument, 2 is cotton impregnated with ink, and 3 is a Ink-impregnated cotton case 4 is a writing tip, 5 is a lid, and 6 is a sponge impregnated with a volatile liquid. 7 indicates a partition plate, and 8 indicates water.

Claims (2)

[Claims] (1) In the space between the container and the lid of the container containing volatile substances,
A lid for a volatile substance container, which allows at least the volatile substance contained within the container to exist in a liquid state. (2) A lid for a volatile substance container according to claim 1, wherein a partition is provided in a space between the lid and the container so that a liquid volatile substance can be present.