Porous Supported Articles and Methods of Making
Assignee3M Innovative Properties Company
InventorsJeremie Peyras-Carratte, Jean-Marie Coant, Lahoussaine Lalouch
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Abstract
Porous supported articles and methods of making are disclosed. Multicomponent polymeric fibers are introduced into a forming chamber and are infilled at least into the interior void spaces of a support web. At least some of the infilled multi-component component fibers are self-bonded to each other to form a porous web that is embedded within the support web. The porous embedded web may contain particles that are bonded to the multicomponent fibers of the web. The optional particles in the porous embedded web may be e.g. abrasive, absorbent, etc.
Claims22
A method of making a porous supported web, comprising:
- introducing discontinuous multicomponent polymeric fibers into a forming chamber;
- mixing the multicomponent fibers within the forming chamber;
- infilling the multicomponent fibers into at least some interior void spaces of a filamentary support web to form an infilled fibrous mat within at least some of the interior void spaces of the support web;
- and,
- exposing the multicomponent fibers to an elevated temperature to melt-bond at least some of the multicomponent fibers to each other so that the fibrous mat is self-bonded into a porous web that is embedded within at least some of the interior void spaces of the support web.
A porous supported article, comprising:
- a filamentary support web comprising interior void spaces therein;
- an embedded porous web within at least some of the interior void spaces of the filamentary support web, the fibers of the web consisting essentially of discontinuous multicomponent polymeric fibers at least some of which are melt-bonded to each other at least at some points of fiber contact so as to comprise a self-bonded web.
Dependencies are inferred from the claim text.