A method for processing planar material webs made of a fiber-containing material is disclosed. The planar material webs are fed as material web portions or endless material web, for the production of three-dimensional products. Before a material web is pressed for shaping, the material web is preformed three-dimensionally by deforming the material web in at least one direction substantially without stretching or compressing.

Provided are: a powdered material for slush molding; and a manufacturing process therefor. The powdered material is less odorous, exhibits excellent powder fluidity, and does not suffer from troubles resulting from the sliding-down or agglomeration of a pigment even when the resin particles have been pigmented on the surfaces thereof. Thus, the powdered material ensures high productivity. The powdered material is a powdered polyurethane urea resin composition which comprises (D) a polyurethane urea resin that has a total content of bimolecular condensate of acetone, bimolecular condensate of methyl ethyl ketone, and bimolecular condensate of methyl isobutyl ketone of 1,000 ppm or less and (N) an additive, wherein the polyurethane urea resin (D) takes the form of thermoplastic polyurethane urea resin particles (P) that have a volume-mean particle diameter of 20 to 500 m and that have protrusions and recesses on the surfaces. The powdered polyurethane urea resin composition is manufactured by a manufacturing process which includes a step of mixing (A) an isocyanato-terminated urethane prepolymer with (B) an alicyclic diamine and/or an aliphatic diamine in an aqueous medium by stirring to form the resin particles (P).

A loop-type flash drying apparatus configured to dry an object to be treated with a gas by supplying the object into a gas stream circulating in a loop-type drying pipe, wherein the loop-type flash drying apparatus includes: (i) a loop-type drying pipe; (ii) a feeding port configured to feed an object to be treated into the drying pipe; (iii) a second blowing port configured to blow a gas into the drying pipe; (iv) a discharge port configured to discharge the object from the drying pipe; (v) a discharge region formed by the drying pipe and the discharge port; and (vi) a first blowing port through which a gas for accelerating a gas flowing in the discharge region is linearly blown toward the discharge region.