| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an adapter with the composition that decreases the fluid velocity-decreasing area, and reduces the deterioration resin caused by the stay resin in a flow channel in the adapter connected to an extruder. <P>SOLUTION: In an adapter with back pressure-adjusting device 1107, in a melting resin flow orthogonal to a valve rod 1108 of a needle valve of the back pressure-adjusting device, the stay resin of the melting resin is decreased, and the deterioration resin caused by the above is reduced by smoothing the flow in adapter 1107, by being arranged to bring the plane touching the curved surface at right angle into contact with a wall surface comprising the blocking members while making a stay control member 1207 abut on vertically upper and lower side faces of the valve rod 1108 when viewed from orthogonal flow so as to make a curved surface similar to a side face part of the valve rod 1108 movable on the side face part. <P>COPYRIGHT: (C)2013,JPO&INPIT |
