| 摘要 |
PROBLEM TO BE SOLVED: To enlarge the surface area of pipe pillow form and increase the number of fine pores that are directly exposed to air in order to prevent the deterioration of gas adsorption, deodorizing and moisture absorbing capabilities that are the functions of the fine pores of charcoal powder and that deteriorate when the charcoal powder is covered by resin during process making the charcoal powder form into thermoplastic synthetic resin form. SOLUTION: The pillow made of thermoplastic synthetic resin pipe form containing charcoal powder has 1.5 to several tens times of surface area of the form and the pores comparing to pillows containing no charcoal powder. By foaming thermoplastic synthetic resin containing charcoal powder and adjusting the distribution of particle sizes of the powder, continuous foam pores and penetrating foam pores as well as rugged fine pores are produced, thereby making the increased surface area of the form and the pores. Functions of charcoal can be maintained by increasing the area of the fine pores that are directly exposed to air.
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