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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a speaker diaphragm
of the present invention. 1 is a substrate and 2 is a metal foil.
2. Description of the Related Art In the prior art related to the improvement of a speaker cover
plate, the material of the speaker diaphragm and L-'c are often paper pulp or gold leaf foil.
However, each of the above-mentioned swing-off board materials i is not necessarily satisfied as
an advantage in the one curve, even if it is placed on the other side VC in the place of -Pi. For
example, in the case of pulp and paper, the density change is small, but on the other hand, the
Young's eyebrow is small. I'm not going to get one bag. The vibrator made of father's metal foil is
considered to be an advantage, but it is an advantage, but because the internal 1 m loss is
extremely small, is it? The resonance occurs at a specific frequency VC> 2 and there is a
drawback that the rounding-up rescue system is deteriorated by kneading. Recently, in recent
years, diaphragms made of thermoplastic resins such as polypropylene and polyethylene have
appeared. This god's deity Qf1. l ? t has the advantage of low relative density (1,0y /, 1 or less)
and large internal loss, and it is sufficient because dolphins and paper pulp have a small Young's
book 11 It has the drawback that it is not possible to get sex Therefore, this plan A is a low
density change (092 to 0.97 yd) of the base of the sham board, and the large loss Boryж
Senrenda of the internal loss is formed of a copolymer with ethylene, and has a high Young's
modulus on at least one side thereof. The present invention will be described in detail in the
following in an attempt to provide a rigid or high internal loss large vibration fill board by
pasting metal foils. This JV base polyethylene is dense: 0 ░ 92-0.97? ArA has a value of tan J:
0.05-0.1, preferably 7 monolith lieutenant Borie Sten (и ? ?: 0.92-0, 93 WArt L, tan 5: 0.1). A
copolymer of ethylene and acetic acid + 3 hinyl (EVA) as a copolymer with dad ethylene, ethylene
and acrylic acid erucine 9. A) is particularly preferred. S letter insertion \, J ,. On the other hand,
for example, aluminum, titanium, magnesium and beryllium fathers are suitable as gold leaf foils
and their alloys and compounds. The metal may be deposited 1-7 by depositing boron or the like
on the above metal as a means to further increase the stiffness of all metals, and the metal foil is
bonded to the substrate by an adhesive means. In order to increase the bond strength change, it
is possible to activate the surface of the 11 ? 1,000 ren by activating the surface. As the
adhesive, a urethane-based adhesive is particularly preferred for the above-described active / sixfactor adhesive, and the epoxy, melamine, silicone-based adhesive VC5 to 25 can be used without
any active treatment. Powdered Boli ? 1000 years ago too.
Use for one-on-one, get a large pecha bond strong light, and outside. 3 letters A) with
workmanship. The diaphragm obtained by the above means is, as shown in the drawing 4, for
example, made of polyethylene as the base body 1 and its structure + fri bonded to the aluminum
foil 2 for example. Stiffness of small size is reinforced by silver cocoon VC 1 while INN floss small
A, which is a drawback of gold bottle foil dwarf plate, is made of polyethylene with large internal
loss. You can make up for it. Therefore, a speaker equipped with a peninsula made by this person
и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и 5, и V, l 'L! It is possible to use a speaker
with frequency characteristics of fX and YX1 together. Brief explanation of 4 districts 11Ill
January district 1 is the break of the speaker I board for this program + [u district 1]. l is a
substrate, 2 t, metal foil. Utility model registration applicant Onchiyo Miso company agent patent
attorney Saita Sata: n, '! . J J) ? ? ? ? ? ? ?? F F ? ? ? ? ? ? 42 42 42 42 42 42 42
42 42 42 42 42 42 42 42 42 ?? Niikawa City Nisshincho Osaka Prefecture Osaka Prefecture
Nyagawa-shi No. 2 1 Onkyo Co., Ltd. Name Fumio Hayakawa Tada 2me '
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