| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a filter for food products excellent in powder leakage property, thermal seal processibility, seal strength, and toughness. <P>SOLUTION: The filter for food products is made of a laminated nonwoven fabric obtained by layering a first layer, a polyester type fiber layer; a second layer, a polyester type ultrathin fiber layer; and a third layer, a layer containing polyester type fibers having a melting point lower than the fibers composing the first layer by 30°C or more and uniting the layers by thermal pressure bonding and the laminated nonwoven fabric has weight per unit surface area (Metsuke) of 10 to 50 g/m<SP>2</SP>and hot-tack strength 1 N/25 mm or higher in a thermal sealing temperature range. <P>COPYRIGHT: (C)2009,JPO&INPIT |
