Abstract: Inner surface strain of a container is reduced by suppressing a temperature drop of blow air, and heat resistance of the container is increased by enhancing the degree of crystallization. A blow air supply unit for a blow molding machine for molding a hollow bottle container 1 by supplying heated blow air into a preform includes: a high-pressure air source 11 for generating high-pressure blow air; a high-pressure gate valve 12 for opening/closing a blow air channel on the downstream of the high-pressure air source 11; a heat exchanger 13 for heating the blow air on the downstream of the high-pressure gate valve 12; a throttle valve 14 for throttling the flow rate of blow air on the downstream side of the heat exchanger 13; and a switchover valve 15 for switching the blow air on the downstream of the throttle valve 14.

Abstract: A seat includes a seat frame, and a cushion material supported by the seat frame and having a three-dimensional knitted fabric which is formed by joining, with connecting threads, a pair of ground knit fabrics which are disposed so as to be separated from one another. The cushion material includes a first region whose elastic compliance when a reaction force is applied to an extending side of the cushion material when an occupant is seated on the seat is substantially equivalent to an elastic compliance of a portion of the occupant's body pressing the cushion material and a second region whose elastic compliance is larger than that of the first region. Accordingly, a thin and light seat can be provided, load concentration on the occupant's tuber ishiadicum bottom portion when seated for a long period of time can be mitigated, and vibration-transmitting characteristics can be improved.

Abstract: A seat comprising a seat frame, and a cushion material supported by the seat frame and having a three-dimensional knitted fabric which is formed by joining, with connecting threads, a pair of ground knit fabrics which are disposed so as to be separated from one another, wherein the cushion material comprising a first region whose elastic compliance when a reaction force is applied to an extending side of the cushion material when an occupant is seated on the seat is substantially equivalent to an elastic compliance of a portion of the occupant's body pressing the cushion material and a second region whose elastic compliance is larger than that of the first region. Accordingly, a thin and light seat can be provided, load concentration on the occupant's tuber ishiadicum bottom portion when seated for a long period of time can be mitigated, and vibration-transmitting characteristics can be improved.