Baking Varnish & Baking Japan

¶ Baking Varnish. Factory production of furniture, automobiles, sewing machines and hundreds of kinds of merchandise is greatly speeded by the uses of varnishes and enamels which can be dipped or sprayed on and baked at high temperatures. Special rooms, called ovens, are provided where the temperature can. be controlled at from 90 to 200 degrees and where the air is washed and the humidity is regulated. Baking varnishes usually contain more oil than others and make a more elastic and durable finish because the drying is more uniform and is accomplished under perfect conditions.

¶ Baking Japan. Quite similar to regular baking varnishes as to application and drying. They are different in composition, usually being made from heavy black asphaltum. Automobile fenders are the best known finishes of this class.

¶ Baking japans are made of resinous gums or oils, turpentine or benzine, asphaltum and linseed or China wood oil. The coatings are used on metals, largely, and are baked at high temperatures up to 400 degrees P. On wood the temperature cannot run above 150 degrees P. without some injury to the wood.

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