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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of the cone of the
embodiment of the present invention to which an etch is applied, FIG. 2 is a cross-sectional view
of a urethane foam provided with a coating layer on one side, and FIG. It is sectional drawing of
an edge. 1 ииииии Corn body, 2 ииииииииииииииииииии Form layer, 4 ииииии Coating layer.
[Detailed description of the invention] The following four points are required for the speaker and
the cone for the cone in order to improve the sound quality and the number of the speaker. 1)
Soft and elastic bg 2) J47 taste 3) Light weight 4) и и Not having temper with conventional
urethane foam и "Because there is temper 1 edge on the edge surface In addition to coating the
material, the weight increase instead of filling the 4) ? l damage, and each row 4) of 3) not only
leads to a decrease in efficiency. Ill the effects of temperature and humidity! The sound quality
changes due to the surface. Also, even on the manufacturing process, after the buttoning of the
speaker, the time taken by the t. Ter meeting ttsu n (? 4 and the resin number decrease slightly,
so this labor is required, the material cost of the resin is also added, and the cost increases . On
the other hand, in the case of water design, when using urethane foam or flat IN, use a small
material that has been melted at one surface and medium temperature to form four layers of
skin, and this is a step 3.4 ? If the desired n-type, such as ??, is cast molded, the condition of
4) is solved with this film layer, and the foam layer under the film layer is 1). 2) to meet the
conditions of 3 "l. As shown in the figure, the edge 2 is attached to the upper edge of the main
body 1 of the spino j-cone, but as shown in FIG. 52, the urethane foam is melted at -6
temperature on one side of the foam 3. The film layer 4 produced by the above is formed into a
numbering material, and in one example, the circumference is as shown in FIG. 351 Akira part 6.
The edge of the ring or +4 circle formed by the connecting portion 7 is used. , ?, 41. The one
shown in> is the one with the coating layer 4 formed on both sides of the foam diagram, which is
more effective than that of the shore surface layer. ? ? ? pt pt pt ? pt pt 1 C 1 ? ? ? ? ?
? ? ? ? ? ? ? ? pt- Therefore, the above 3j, 2) j 3), 4) 141 ? ? (?not only satisfying the
requirement of X и Ar, the sound quality and efficiency are improved, and the process is short)
Economic benefits can also be achieved by the cost Nilm'J.
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