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Title:
SPEAKER EDGE, METHOD OF FOAM-MOLDING THE SAME, APPARATUS FOR FOAM-MOLDING THE SAME, SPEAKER EDGE FOAM-MOLDING SYSTEM, AND SPEAKER EMPLOYING THE SPEAKER EDGE
Document Type and Number:
WIPO Patent Application WO/2002/035883
Kind Code:
A1
Abstract:
A speaker edge which is obtained by mechanically mixing a gas with a thermosetting composition comprising as major components a urethane prepolymer and a latent hardener which is an inactivated solid amine, injecting the mixture into a mold, and then heat-curing it while foaming it to thereby mold it; a method of molding the speaker edge which comprises injecting/applying a foamable thermosetting composition to the female mold of a mold set heated to or below the critical heat-curing temperature of the composition, press-fitting to the female mold the male mold heated to or above the critical heat-curing temperature of the foamable thermosetting composition while foaming the composition, and foaming and curing the composition; and a speaker edge molding apparatus which comprises a device for taking a gas therein, a device for injecting a thermosetting composition into the gas, a device for mechanically mixing the gas with the thermosetting composition to disperse them, a device for forcibly injecting the resultant foamable thermosetting composition into the female mold of a speaker edge mold set, a device for press-fitting the male mold to the female mold, and a device for foaming and curing the foamable thermosetting composition.

Inventors:
Tabata, Shinya (79 Nakomi, Meiwacho Taki-gun, Mie, 515-0334, JP)
Mizone, Shinya (1488-107, Ishindenkozubeta Tsu-shi, Mie, 514-0061, JP)
Takahashi, Yoshiyuki (183-2, Tawaracho Matsusaka-shi, Mie, 515-0032, JP)
Ikeda, Kiyoshi (67-9, Nijigaokacho Matsusaka-shi, Mie, 515-0042, JP)
Yamasaki, Hiroko (1386-98, Hiokacho Matsusaka-shi, Mie, 515-0835, JP)
Okuda, Shinji (3-12-16, Yamamotonaka Takarazuka-shi, Hyogo, 665-0883, JP)
Takada, Masaharu (2-217, Minamikasugaoka Ibaraki-shi, Osaka, 567-0046, JP)
Application Number:
PCT/JP2001/009167
Publication Date:
May 02, 2002
Filing Date:
October 18, 2001
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1006, Oaza Kadoma Kadoma-shi, Osaka, 571-8501, JP)
SUNSTAR ENGINEERING INC. (7-1 Aketacho Takatsuki-shi, Osaka, Osaka, 569-1195, JP)
Tabata, Shinya (79 Nakomi, Meiwacho Taki-gun, Mie, 515-0334, JP)
Mizone, Shinya (1488-107, Ishindenkozubeta Tsu-shi, Mie, 514-0061, JP)
Takahashi, Yoshiyuki (183-2, Tawaracho Matsusaka-shi, Mie, 515-0032, JP)
Ikeda, Kiyoshi (67-9, Nijigaokacho Matsusaka-shi, Mie, 515-0042, JP)
Yamasaki, Hiroko (1386-98, Hiokacho Matsusaka-shi, Mie, 515-0835, JP)
Okuda, Shinji (3-12-16, Yamamotonaka Takarazuka-shi, Hyogo, 665-0883, JP)
Takada, Masaharu (2-217, Minamikasugaoka Ibaraki-shi, Osaka, 567-0046, JP)
International Classes:
B29C39/10; B29C39/38; B29C44/12; B29C44/34; B29C67/20; H04R7/18; H04R7/20; H04R31/00; B29C35/08; B29L31/38; (IPC1-7): H04R7/20; H04R31/00
Foreign References:
JPH1025327A
JPH08207074A
Other References:
See also references of EP 1333699A1
Attorney, Agent or Firm:
Sato, Yataro (Room 409, Yuni higashi-umeda 7-2 Minami Ogi-mach, Kita-ku Osaka Osaka, 530-0052, JP)
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