Patent Application
20200149215
The present invention is generally related to cloth, and more particular to a type of waterproof and permeable cloth.
Cotton cloth is commonly used for clothing due to its softness, capable of keeping warmth, permeability, and hygroscopicity. However, it also suffers shortcomings such as difficulty to dry. Cotton fibers absorb water molecules from the wearer and the water molecules remain in the fibers, causing the fibers to become yellowish, and adding the burden to the wearer due to the increased weight.
Therefore, synthetic fibers such as polyamide, polyester, polyacrylonitrile, etc. are developed. These fibers have advantages such as windproof, waterproof, light weight, and gloss, and therefore are commonly applied to umbrellas, rain coats, suits, etc. However, they are also not absorbent, airtight, etc. The body heat of the wearer cannot be ventilated, and his/her rising temperature would be adjusted by perspiration. The wearer would feel sultry, wet, and sticky. The wearer may even develop eczema or sweat stain.
Therefore, an objective of the present invention is to provide a kind of cloth that is waterproof but also absorbent and permeable.
The waterproof and permeable cloth of the present invention includes a permeable waterproof layer, a first permeable coating layer attached to an inner side of the permeable waterproof layer, a second permeable coating layer attached to an outer side of the permeable waterproof layer, a moisture-absorbing permeable waterproof layer attached to an inner side of the first permeable coating layer, and a cloth layer attached to an outer side of the second permeable coating layer.
The moisture-absorbing permeable waterproof layer includes multiple grid cells cascaded together. Each grid cell has an aperture that is smaller than outside water molecules but is greater than inside moist molecules. Therefore, outside water molecules (a) cannot permeate through the grid cells inside, but inside moist molecules may be expelled outside. The cloth therefore is waterproof but also absorbent and permeable.
The foregoing objectives and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.
Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.
The following descriptions are exemplary embodiments only, and are not intended to limit the scope, applicability or configuration of the invention in any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims.
As shown in
As shown in
The moisture-absorbing permeable waterproof layer 34 includes multiple grid cells 341 cascaded together. Each grid cell 341 has an aperture 341d that is smaller than outside water molecules (a) but is greater than inside moist molecules (b). Therefore, outside water molecules (a) cannot permeate through the grid cells 341 inside, but inside moist molecules (b) may be expelled outside. The moisture-absorbing permeable waterproof layer 34 as such may resist outside water molecules (a) but allow inside moist molecules (b) to permeate through.
As shown in
As described above, the waterproof and permeable cloth has the permeable waterproof layer preventing water molecules from permeating inside the clothing and has the moisture-absorbing permeable waterproof layer to further prevent water molecules from permeating inside the clothing and to absorb moist molecules. The moist molecules are then expelled through the grid cells, the permeable waterproof layer, and the cloth layer outside the clothing. The permeable waterproof layer and the moisture-absorbing permeable waterproof layer as such jointly provide dual waterproofing mechanism and the cloth is therefore absorbent, permeable, and waterproof.
While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the claims of the present invention.
