Tow multiaxial non-woven fabric
AssigneePolymer Processing Research Institute Ltd.
InventorsYuki Kuroiwa, Kazuhiko Kurihara, Yasuo Sasaki
Life of this patent
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Abstract
A multiaxial laminated non-woven fabric is formed with tows overlaid and bonded with one another. The starting material tow is crimped and has a total tex of not more than 300,000 and filaments in the tow have an average fineness of not more than 3 tex. A three-dimensional molded product made from the multiaxial non-woven fabric is also provided. The non-woven tow fabric of ensured quality is produced by bonding tows multiaxially and obliquely overlaid with one another, for example by needle punching or heat treatment, while the tows are held by pins of an overlaying machine.
Claims16
A multiaxially laminated non-woven fabric comprising:
- at least one layer of parallel warp or weft members;
- at least first and second layers of plural parallel oblique tows having a total tex of not less than 1,000 but not more than 30,000, the oblique tows of said first and second layers crossing the warp or weft members and crossing each other with said warp or weft as approximate axes of symmetry;
- and
- wherein each of said tows is formed as a bundle of crimped filaments having an average fineness of not more than 3 tex.
Dependencies are inferred from the claim text.