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US 4,808,202 AGranted
Adsorptive fiber sheet
AssigneeUnitka Ltd.
InventorsYasuo Nishikawa, Yasumasa Nakazima
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AssigneeUnitka Ltd.
InventorsYasuo Nishikawa, Yasumasa Nakazima
Estimating the term…
An adsorptive fiber sheet where a nonwoven fabric of synthetic fiber constituted only by synthetic fiber having a higher melting temperature is secured in a layered structure to at least one surface of a nonwoven fabric of adsorptive fiber which is produced in such a manner that synthetic fiber having a higher melting temperature, synthetic fiber having a lower melting temperature and adsorptive fiber are mixed with one another and contact points between the synthetic fiber having a lower melting temperature and other fibers are bound together by softening the synthetic fiber having a lower melting temperature. Both the synthetic fabrics are placed one above another in a layered structure by allowing synthetic fiber having a lower melting temperature to be softened to bind or by allowing fibers to be entangled with one another in such a manner that no separation takes place therebetween.
An adsorptive fiber sheet wherein a nonwoven fabric of synthetic fiber constituted only by synthetic fiber having a higher melting temperature is secured in a layered structure to at least one surface of a nonwoven fabric of adsorptive fiber which is constituted in such a state that synthetic fiber having a higher melting temperature, synthetic fiber having a lower melting temperature and adsorptive fiber are mixed to contact with in another and the contact points of said sythetic fiber having a lower melting temperature with other fibers are bound together by softening the synthetic fiber having a lower melting temperature.
An adsorptive fiber sheet wherein a nonwoven fabric of synthetic fiber constituted by a mixture of synthetic fiber having a higher melting temperature and synthetic fiber having a lower melting temperature is secured in a layer structure to at least one surface of a nonwoven fabric of adsorptive fiber which is constituted in such a state that synthetic fiber having a lower melting temperature and adsorptive fiber are mixed to contact with one another and the contact points of said synthetic fiber having a lower melting temperature with other fibers are bound together by softening the synthetic fiber having a lower melting temperature.
Dependencies are inferred from the claim text.