The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 26, 1999
Filed:
Feb. 10, 1998
Horst Muhlfeld, Grasellenbach, DE;
Hansjorg Grimm, Weinheim, DE;
Thomas Dabisch, Morlenbach, DE;
Harald Stini, Birkenau, DE;
Firma Carl Freundenberg, Weinheim, DE;
Abstract
An adsorbent, supple, filter fabric composed of an air-permeable, supple, textile, carrier material having adsorbent particles fixed on it by means of a thermoplastic binding agent. The adsorbent particles are coated on their surface with binding-agent particles which are set apart from each other. The average diameter of the binding-agent particles is smaller than that of the adsorbent particles. The adsorbent particles are also bonded to each other by binding-agent particles. The coating of the carrier material with adsorbent material is over 200 g/m.sup.2. The fabric has a total thickness of 0.5 to 5 mm, and its suppleness permits a bending radius of not more than 5 mm able to be carried out free of destruction. The filter fabric is manufactured by first mixing absorbent and binding-agent particles while adding water. The mixing is followed by carrying out the following steps in continuous sequence: sprinkling of the mixture on the textile carrier material, heating above the start of melting of the binding agent, and cooling off and rolling up of the resultant supple filter fabric. The product can be used in air purification systems as well as for protective clothing.