| 主权项 |
1. A filter, comprising:
a nonwoven blend of fibers, the nonwoven blend comprising:
bi-component fibers having a linear mass density of between approximately 0.5 decitex (dtex) and approximately thirty (30) dtex, the bi-component fibers comprising:
a core having a first melting point, the core comprising a first polymer, the first polymer being one selected from the group consisting of:
a polyolefin;a polyester;a polyamide;a polylactic acid; anda biodegradable thermoplastic polymer; anda sheath surrounding the core, the sheath having a second melting point, the second melting point being lower than the first melting point, the sheath comprising a second polymer, the second polymer being one selected from the group consisting of:
a polyolefin;a co-polyester; anda co-polyamide; andmono-component fibers bonded to the bi-component fibers, the mono-component fibers having a linear mass density of between approximately 0.5 dtex and approximately 30 dtex, the mono-component fibers comprising a third polymer, the third polymer being one selected from the group consisting of:
a polyolefin;a co-polyester;a co-polyamide; anda polypropylene;the mono-component fibers having a shaped cross-section, the shaped cross-section being one selected from the group consisting of:
a trilobal cross-section; a pentalobal cross-section; a delta cross-section; a hollow cross-section; a flat cross-section; and a cross-shaped cross-section. |
