| 摘要 |
<p>PURPOSE:To prevent the attachment of dust and foreign matter by providing a constitution wherein a material forming a transfer basket and a containing case is polypropylene, and the amounts of antioxidant or peroxide decomposing agent and hydrochloric-acid absorbent which are added and mixed in the polypropylene are made to be the specified amounts or less. CONSTITUTION:When a transfer basket and a containing case 2 are manufactured, various kinds or resins can be used. Especially, antioxidant or peroxide decomposing agent which is added and mixed in polypropylene is made to be 1,000ppm or less, and hydrochloric-acid absorbent is made to be 500ppm or less. As the atioxidant and the peroxide decomposing agent, the following material can be listed; 2,6-di-t-buthyl-p-cresol as phenol based material, dylaurylthiopropionate as a sulfur based material, triphenyl phosphite as phosphorus based material and the like. As the hydrochloric-acid absorbent, fatty-acid metallic salts such as, e.g. calcium stearite and zinc stearate, epoxidated soybean oil, hydrotalcite and the like can be listed.</p> |
