Porous body

Abstract

The invention relates to a porous body. The porous body comprises a buffer portion, a liquid collecting portion and an increasing capillary portion arranged between the buffer portion and the liquid collecting portion. Rising capillary pressure of the increasing capillary portion is progressively increased from the buffer portion to the liquid collecting portion, and rising capillary pressure of the buffer portion is 50%-85% that of the liquid collecting portion. According to a scribbling tool to which the porous body is applied, a user can conveniently observe the scribbling liquid amount, the user experience is improved, and ink leakage under unusual conditions can be effectively avoided.

Description

Technical field [0001] The invention relates to a porous body, in particular to a porous body in a straight liquid scribing tool in the technical fields of writing, cosmetics, correction fluid, liquid glue and the like. Background technique [0002] In the field of scribbling, porous materials have been widely used. For example, in watercolor pens, markers, and eyeliners, porous materials are used as materials to absorb and hold liquids. In the prior art, the most commonly used porous material is a roll core formed by coating fiber bundles with a film. When used, it is inserted into the penholder and inserted into the scribble head. The two ends of the roll core are connected to the atmosphere so that the air flows to both ends when liquid is injected. Drain and spread the liquid to both ends, which also facilitates the release of liquid when writing. However, the liquid output of the roll-wrap core will gradually decrease as the use time increases, which will result in blurred ...

AI Technical Summary

Problems solved by technology

However, there are several shortcomings in this patent: 1. This patent is provided with a plurality of connecting pipes on the circumference with the nib as the axis, but the inner diameter of the pen holder of many graffiti tools is small, usually less than 8mm. The space occupied by the outer wall leaves very limited space for the graffiti-absorbing body in the low-density portion. In this case, it is very difficult to insert and run through the graffiti-absorbing body in the low-density portion. When multiple connecting pipes are inserted in a small space, the low-density part is broken and the liquid leaks; 2. When multiple connecting pipes run through the low-density part, they occupy a large amount of space in the low-density graffiti adsorbent, and the low-density graffiti The capacity of the liquid absorber to absorb the graffiti is significantly reduced. When the liquid storage tube leads out the graffiti due to changes in the external environment, the graffiti tools are prone to leakage due to insufficient capacity of the low-density graffiti absorber; and a plurality of communication pipes are inserted into the high-density part and a plurality of communication pipes are arranged on the circumference with the writing head as the axis, the high-density part must have a large diameter and volume, because the gap in the high-density part is blocked by the writing liquid This will cause a large amount of graffiti in the liquid storage tube to be exported to the high-density part. On the one hand, it will make the user think that the amount of filling liquid is insufficient and reduce the user experience. On the other hand, the graffiti in the liquid storage tube will Finally, the role of the high-density part is equivalent to the roll-wrapped core, and the shortcomings of traditional roll-wrapped writing tools will be reflected; 4. The writing liquid in this kind of writing tool cannot be directly transmitted from the connecting tube to the nib, but must pass through the high-density part. Graffiti absorber, in liquid chalk, metal ink pen and other graffiti applications that need to export graffiti containing particles, because the particles are filtered out by the graffiti absorber in the high-density part, graffiti cannot be written

[0004] Both of the above two patented technologies need to lead out more graffiti from the liquid storage tube to achieve the purpose of liquid sealing the connecting pipe. Even if there is no graffiti, the amount of graffiti left in the liquid storage tube is already small, and users will mistakenly think that graffiti When there is less liquid, or when there is no graffiti in the liquid storage tube, although there is still a lot of graffiti in the graffiti absorber, the user will mistakenly think that the graffiti has been used up, both of which lead to poor performance. user experience

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