Selective layering of superabsorbents in meltblown substrates
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United States of America Patent
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-
Aug 5, 1986
Grant Date -
N/A
app pub date -
Apr 23, 1984
filing date -
Apr 23, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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