Speaker cabinet

Abstract

A smaller-sized speaker cabinet developed in this invention is made of a mixture that is composed of a woody cellulose powder of proper physical properties and a synthetic resin blended with this powder. The resin is a non-chlorinated resin, and the cellulose powder consists of particles whose diameters are included in a range from about 5 μm to 500 μm. The cellulose powder is surface-treated to increase affinity for the resin, so that efficient manufacture of the cabinets of improved acoustic performance is now possible.

1 . A speaker cabinet composed of a mixture of a non-chlorinated resin and a cellulose powder, wherein the powder consists of particles whose diameters are included in a range from about 5 μm to 500 μm.  
   
   
       2 . A speaker cabinet as defined in  claim 1 , wherein content by weight of the cellulose powder in the mixture is from about 30% to 70%.  
   
   
       3 . A speaker cabinet as defined in  claim 1 , wherein the resin is selected from the group consisting of polyolefin resins, polyester resins, polyester resins and polystyrene resins.  
   
   
       4 . A speaker cabinet as defined in  claim 1 , wherein the cellulose powder is surface-treated to increase affinity for the non-chlorinated resin.  
   
   
       5 . A speaker cabinet as defined  claim 1 , wherein the mixture is colored with a colorant.  
   
   
       6 . A speaker cabinet as defined in  claim 1 , wherein the cellulose powder has an intrinsic perfume, and the mixture is molded at a temperature within a range from 160° C. to 200° C.  
   
   
       7 . A speaker cabinet as defined in  claim 1 , wherein the cellulose powder is surface-esterified using a polybasic acid anhydride so as to increase affinity for the non-chlorinated resin.  
   
   
       8 . A speaker cabinet as defined in  claim 1 , wherein the mixture of the non-chlorinated resin and a esterified cellulose powder further comprises an organic peroxide.