초록 ▼

A soundproofing laminated glass pane comprising at least two transparent rigid sheets, at least one plastic film, and at least one film having ordinary acoustic performance, provides acoustic results just as good as the plastic film alone. The two films may be separated by an impermeable thin film,

A soundproofing laminated glass pane comprising at least two transparent rigid sheets, at least one plastic film, and at least one film having ordinary acoustic performance, provides acoustic results just as good as the plastic film alone. The two films may be separated by an impermeable thin film, such as polyethylene terephthalate.

대표청구항 ▼

[ What is claimed as new and desired to be secured by Letters Patent of the United States is:] [1.] A laminated pane, comprising:(i) at least two transparent rigid sheets,(ii) at least one high-performance acoustic film, and(iii) at least one ordinary standard film,wherein, eithersaid at least one o

[ What is claimed as new and desired to be secured by Letters Patent of the United States is:] [1.] A laminated pane, comprising:(i) at least two transparent rigid sheets,(ii) at least one high-performance acoustic film, and(iii) at least one ordinary standard film,wherein, eithersaid at least one ordinary standard film, when in a thickness of 2 mm, combined in an assembly laminated with two 4-mm glass plates in order to form a laminated bar 9 cm in length and 3 cm in width and the bar is excited by a shock, has a resonant frequency of the first mode, f.sub.c, which differs by more than 35% from that of a bar made of monolithic glass, having the same length, the same width and a thickness of 4 mm; orsaid at least one ordinary standard film, when in a thickness of at most 1 mm, combined in an assembly laminated with two 2.1-mm glass plates to form a laminated sheet, has an acoustic attenuation index shifted, for frequencies above 800 Hz, by more than 6 dB from a reference index which increases by 9 dB per octave up to 2,000 Hz and by 3 dB per octave at higher frequencies.