PURPOSE: To reduce the attached rate of a binder by placing acid resistant thermoplastic synthetic fiber between a plurality of glass fiber felts to be stacked to form a mat and supplying binder solution and heat-bonding them.
CONSTITUTION: Glass fiber felts 1, 2, and 3 are supplied from glass fiber felt rolls, and before they are stacked, thermoplastic synthetic fibers A such as acrylic fiber are supplied between adjacent felts 1 and 2, and 2 and 3 from fiber supply equipment 4 and 5, then they are stacked. A binder solution B is sprayed from a spray 8 and attached in the felts. After excess binder solution is removed with a suction box 9, stacked felts are heat-formed to form a desired glass mat. Therefore, peeling of stacked layers is prevented without increasing attached rate of the binder and its hardness is good.
MUTOU JIYUNSUKE
KITABAYASHI MASANOBU
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