Abstract: A rotary tea maker includes a tea cup and a tea infuser. After the tea is brewed in a tea brewing room of the tea infuser, through rotation of the tea infuser, the tea is discharged from the tea brewing room to be stored in a tea room of the tea cup for use. The tea in the tea brewing room flows to a passage from a water outlet of the tea infuser and then enters the tea room from a through hole of the tea cup. During the process, the air in the tea room is expelled to the passage from the through hole when the tea is poured and then flows to the tea brewing room through an air hole of an air pipe of the tea infuser, so that the tea in the tea brewing room can be discharged to the tea room smoothly.

Abstract: A method is provided for forming a corrugated structure from a fibrous web by first forming a fibrous web; alternatingly lapping the fibrous web; folding the fibrous web to form corrugations; brushing fibers from one corrugated peak to extend to an adjacent peak and bridge the gap therebetween; spraying resin on the corrugated fibrous web; heating the resin-sprayed corrugated fibrous web; or further sandwiching said fibrous web with a pair of outer webs with resin sprayed thereon and heating said sandwiched fibrous web. Another embodiment initially combines fibers of low melting point with regular fibers and heats the corrugated fibrous web after brushing, rather than spraying resin on the corrugated fibrous web.