초록 ▼

The invention generally provides for formation of meltblown material containing wood fiber on to a continuous foraminous belt. During formation a polymer and wood fiber first layer is applied to a moving belt from at least one bank of meltblown forming apparatus. This first layer does not contain su

The invention generally provides for formation of meltblown material containing wood fiber on to a continuous foraminous belt. During formation a polymer and wood fiber first layer is applied to a moving belt from at least one bank of meltblown forming apparatus. This first layer does not contain superabsorbent. The belt carrying the first layer passes beneath at least one further source of meltblown fiber into which superabsorbent is added along with the wood fibers. This provides at least one additional layer integrally connected to the first-formed layer and having superabsorbent properties. The first layer acts to aid in trapping of any superabsorbent which is not immediately entangled in the meltblown and wood fibers and prevents it passing through the forming belt.

대표청구항 ▼

A layered nonwoven fabric-like material having a unique combination of strength, absorbency and hand, said material comprising A. at least one normal absorbent layer of a gas-formed matrix of thermoplastic polymeric meltblown microfibers and a multiplicity of individualized and gas-formed staple fib

A layered nonwoven fabric-like material having a unique combination of strength, absorbency and hand, said material comprising A. at least one normal absorbent layer of a gas-formed matrix of thermoplastic polymeric meltblown microfibers and a multiplicity of individualized and gas-formed staple fibers disposed throughout said matrix of microfibers and engaging at least some of said microfibers to space the microfibers apart from each other, said staple fibers being interconnected by and held captive within said matrix of microfibers by mechanical entanglement of said microfibers with said staple fibers, the mechanical entanglement and interconnection of said microfibers and staple fibers forming a coherent integrated fibrous structure, and B. at least one highly-absorbent layer integrally connected to said normal absorbent layer, said highly-absorbent layer comprising a gas-formed matrix of thermoplastic polymeric meltblown microfibers and a multiplicity of individualized and gas-formed staple fibers and superabsorbent particles disposed throughout said matrix of microfibers and engaging at least some of said microfibers to space the microfibers apart from each other, said staple fibers and said superabsorbent being interconnected by and held captive within said matrix of microfibers by mechanical entanglement of said microfibers with said staple fibers and said superabsorbent particles, the mechanical entanglement and interconnection of said microfibers and staple fibers and said superabsorbent particles forming a coherent integrated fibrous structure.