Patent Translate Powered by EPO and Google Notice This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate, complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or financial decisions, should not be based on machine-translation output. DESCRIPTION JPS5443719 Specification-/ Name of Invention Method of manufacturing speaker diaphragm 3. Detailed Description of the Invention The present invention relates to a method of manufacturing a speaker diaphragm for a speaker, which is excellent in moisture resistance, has extremely low metal corrosion resistance, and is provided with flame retardancy without impairing the acoustic performance. 2. Description of the Related Art In recent years, various speakers have been proposed which have been provided with flame retardancy in order to eliminate the occurrence of fire caused by speakers used in electric devices such as radio receivers and television receivers. Such speaker members are mainly vulnerable to fire, and the possibility of heat generation of the speaker 1 voice coil due to excessive human power or the possibility of being exposed to high heat inside the television cabinet is so great. Flame retardancy is strongly desired. And, as a flame retardant method, an internal addition method such as mixing a powdered flame retardant such as an organic phosphorus compound or an organic halogen compound into pulp slurry or kneading at the time of spinning, and a flame retardant There is an external addition method in which the solution is adhered or absorbed to a paper or fabric by impregnation, application or spray. However, in the case of the internal addition method, the flame retardant particles are partially dissolved in water or when the particle size is small, they are washed away with water and the yield of the flame retardant is very bad, and it is necessary to use a fixing aid together In the case of the aqueous addition method, for example, in the case of an aqueous method, EndPage: 1 containing a large amount of a flame retardant such as phosphorus or ammonium such as ammonium phosphate, is hygroscopic after treatment, The softening property is a dog, which corrodes metal parts and deteriorates the flame retardant effect with time, leading to deformation of the speaker 10-05-2019 1 diaphragm and deterioration of water repellence. Most of them are composed of the body, phosphorus, or a halogen-based organic compound, which leads to softening, metal corrosion and water repellency of the speaker diaphragm. The problem with the imaging plate for a speaker manufactured by the external addition method in which the solution is impregnated with a solution of a halogenogen compound, phosphate ester, ammonium phosphate or the like according to the present invention, ie, high hygroscopicity, paper strength due to metal corrosion It is an object of the present invention to provide a method for manufacturing a speaker diaphragm which sufficiently satisfies the property of flame retardancy while preventing the occurrence of deterioration and rust. <Examples> Four types of mixed drugs are required to manufacture the imaging moving plate for speakers according to the present invention. That is, it is a drug consisting of the following proportions. Flame retardant: 100 parts by weight of unsaturated vinyl phosphate Either ram salt of sodium ester salt or soda salt part by weight First, the treatment liquid is prepared as a single bath with a mixed drug composed of the above ratio, and preformed The speaker ball moving plate is impregnated with this treatment solution, and after preliminary drying (120C, 10 minutes, cure), heat molding is performed to impart flame retardancy by providing a speaker having moisture resistance and corrosion resistance. Manufacture the diaphragm for the Here, each chemical used is compatible, and the mixed solution is stable, so that single bath processing is possible, and processing is simple, and sulfamic acid / Addition of inorganic salts such as mon to reduce the amount of addition of flame retardant to obtain desired flame retardancy With less deterioration of paper quality after flame retardant treatment Furthermore by the action of rust inhibitor and water repellent agent Since the hygroscopicity is reduced, the change in paper quality with time due to humidity is extremely small. In order to improve the paper strength, it is preferable to add melamine and polyamide epoxy resin to the diaphragm in advance as needed. According to the method of manufacturing the speaker diaphragm of the present invention, the flame retardant and the impregnation treatment are applied to impart flame retardancy and moisture resistance without impairing the acoustic performance. A speaker diaphragm having an anticorrosion effect can be easily obtained. In addition, the preparation drug according to the present invention has no toxicity and there is no concern about pollution. Attorney Attorney Atsushi FukushiEndPage: 2 10-05-2019 2
© Copyright 2021 DropDoc