Laboran screw tube jar no 7

Example 6

Into a LABORAN screw tube jar No. 7 (manufactured by AS ONE Corporation), 9.5 g of the powderizing agent A and 0.5 g of Vanillin (manufactured by Wako Pure Chemical Industries, Ltd.) were placed. These were kept at 60° C. for 0.5 hours and completely melt for mixing. Here, the amount of the liquid component used was 5% by mass relative to the total mass of the powder composition (powderizing agent A+liquid component). Next, the mixture was cooled in a 10° C.-thermostatic chamber for 0.5 hours (tempering process) and then was allowed to stand in a 20° C.-thermostatic chamber for 12 hours. Thus, a powder composition having voids with an increased volume was obtained.

The characteristics of the obtained powder composition were as follows.

loose bulk density: 0.3 g/cm³

average particle diameter: 140 μm

expansion ratio: ×2.9

As illustrated in FIG. 2, the powder composition obtained in Example 6 was in the form of powder.

Examples 7 to 9 employed an orange dye (hydrophobic dye) as the liquid component.

Example 4

Into a LABORAN screw tube jar No. 7 (manufactured by AS ONE Corporation), 9.9 g of the powderizing agent A and 0.1 g of Vanillin (manufactured by Wako Pure Chemical Industries, Ltd.) were placed. These were kept at 60° C. for 0.5 hours and completely melt for mixing. Here, the amount of the liquid component used was 1% by mass relative to the total mass of the powder composition (powderizing agent A+liquid component). Next, the mixture was cooled in a 10° C.-thermostatic chamber for 0.5 hours (tempering process) and then was allowed to stand in a 20° C.-thermostatic chamber for 12 hours. Thus, a powder composition having voids with an increased volume was obtained.

The characteristics of the obtained powder composition were as follows.

loose bulk density: 0.3 g/cm³

average particle diameter: 116 μm

expansion ratio: ×4.0

As illustrated in FIG. 2, the powder composition obtained in Example 4 was in the form of powder.

Example 5

Into a LABORAN screw tube jar No. 7 (manufactured by AS ONE Corporation), 9.7 g of the powderizing agent A and 0.3 g of Vanillin (manufactured by Wako Pure Chemical Industries, Ltd.) were placed. These were kept at 60° C. for 0.5 hours and completely melt for mixing. Here, the amount of the liquid component used was 3% by mass relative to the total mass of the powder composition (powderizing agent A+liquid component). Next, the mixture was cooled in a 10° C.-thermostatic chamber for 0.5 hours (tempering process) and then was allowed to stand in a 20° C.-thermostatic chamber for 12 hours. Thus, a powder composition having voids with an increased volume was obtained.

The characteristics of the obtained powder composition were as follows.

loose bulk density: 0.3 g/cm³

average particle diameter: 139 μm

expansion ratio: ×2.7

As illustrated in FIG. 2, the powder composition obtained in Example 5 was in the form of powder.