Nonwoven fabric for reinforcing foam molded articles and product using same

Abstract

It is provided that a nonwoven fabric for reinforcing foam molded articles which is excellent in the dimensional stability in a cutting/sewing step, in the followability to a mold in a foam molding step, and gives a foam molded article with excellent appearance and durability. A nonwoven fabric for reinforcing foam molded articles formed by interlacing at least 2 filament nonwoven fabric layers with different apparent density, wherein the nonwoven fabric has dry heat shrinkage rate of −1 to 2% in both longitudinal and transverse directions at the time of heat treatment at 80° C. for 30 minutes and tear strength of 20 N or higher in both longitudinal and transverse directions.

1 . A nonwoven fabric for reinforcing foam molded articles formed by interlacing at least 2 filament nonwoven fabric layers with different apparent density, wherein the nonwoven fabric has dry heat shrinkage rate of −1 to 2% in both longitudinal and transverse directions at the time of heat treatment at 80° C. for 30 minutes and tear strength of 20 N or higher in both longitudinal and transverse directions. 
     
     
         2 . The nonwoven fabric for reinforcing foam molded articles as claimed in  claim 1 , wherein all of the nonwoven fabric layers have apparent density of higher than 0.15 g/cm 3 . 
     
     
         3 . The nonwoven fabric for reinforcing foam molded articles as claimed in  claim 1 , wherein the stress at the time of 5% elongation in longitudinal direction is 20 to 45 N/5 cm and the stress at the time of 5% elongation in transverse direction is 19 N/5 cm or lower. 
     
     
         4 . The nonwoven fabric for reinforcing foam molded articles as claimed in  claim 1 , wherein the stress at the time of 5% elongation in longitudinal direction is 30 to 45 N/5 cm and the stress at the time of 5% elongation in transverse direction is 15 N/5 cm or lower. 
     
     
         5 . The nonwoven fabric for reinforcing foam molded articles as claimed in  claim 2 , wherein the stress at the time of 5% elongation in longitudinal direction is 20 to 45 N/5 cm and the stress at the time of 5% elongation in transverse direction is 19 N/5 cm or lower. 
     
     
         6 . The nonwoven fabric for reinforcing foam molded articles as claimed in  claim 2 , wherein the stress at the time of 5% elongation in longitudinal direction is 30 to 45 N/5 cm and the stress at the time of 5% elongation in transverse direction is 15 N/5 cm or lower. 
     
     
         7 . The nonwoven fabric for reinforcing foam molded articles as claimed in  claim 1 , wherein the filament nonwoven fabrics are made of polyester fibers. 
     
     
         8 . The nonwoven fabric for reinforcing foam molded articles as claimed in  claim 2 , wherein the filament nonwoven fabrics are made of polyester fibers. 
     
     
         9 . The nonwoven fabric for reinforcing foam molded articles as claimed in  claim 3 , wherein the filament nonwoven fabrics are made of polyester fibers. 
     
     
         10 . The nonwoven fabric for reinforcing foam molded articles as claimed in  claim 4 , wherein the filament nonwoven fabrics are made of polyester fibers. 
     
     
         11 . The nonwoven fabric for reinforcing foam molded articles as claimed in  claim 5 , wherein the filament nonwoven fabrics are made of polyester fibers. 
     
     
         12 . The nonwoven fabric for reinforcing foam molded articles as claimed in  claim 6 , wherein the filament nonwoven fabrics are made of polyester fibers. 
     
     
         13 . A foam molded article, wherein the nonwoven fabric for reinforcing foam molded articles as claimed in  claim 1  is used as a reinforcing cloth. 
     
     
         14 . The foam molded article as claimed in  claim 13 , wherein the filament nonwoven fabric with higher apparent density between 2 layers of filament nonwoven fabric with different density is arranged in the foamed body side of the foam molded article.