Multilayer nonwoven fabric for foam molding
AssigneeMitsui Chemicals, Inc.
InventorsTaro Ichikawa, Yoshinori Kobayashi, Hidenori Yoshizawa
Life of this patent
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Abstract
Multilayer nonwoven fabrics for foam molding that have excellent resistance to the separation of layers, have reinforcing effects and urethane leakage prevention performance, and are producible without the occurrence of fiber dust on the surface. In the multilayer nonwoven fabric for foam molding, a reinforcing layer is stacked on at least one side of a dense layer, the dense layer includes a meltblown nonwoven fabric layer (A) and spunbonded nonwoven fabric layers (B) that are stacked on both sides of the layer (A), and the meltblown nonwoven fabric layer (A) and the spunbonded nonwoven fabric layers (B) are partially thermocompression bonded with each other.
Claims12
A process for producing a reinforced foam article comprising
- stacking spunbonded nonwoven fabric layers (B) on both sides of a meltblown nonwoven fabric layer (A),
- partially thermocompression bonding the layers with each other to produce a dense layer,
- stacking a reinforcing layer on at least one side of the dense layer,
- entangling the dense and reinforcing layers by needle punching to produce a multilayer nonwoven fabric for foam molding, and
- forming a foamed urethane on a side of the multilayer nonwoven fabric having a reinforcing layer by molding urethane foam onto the multilayer nonwoven fabric.
Dependencies are inferred from the claim text.