公开(公告)号：JPH1038725A

公开(公告)日：1998-02-13

申请号：JP19607496

申请日：1996-07-25

Applicant: TORAY INDUSTRIES

Inventor： MAEHARA KENSAKU ,  TANAKA HARUMI ,  KATO TOMIO

IPC: G01F1/32 ,  G01F1/20 ,  G01L9/00 ,  H01L29/84 ,  H01L41/08 ,  H01L41/193

Abstract: PROBLEM TO BE SOLVED: To obtain a pressure-sensitive element in which fluctuation of output is suppressed while reducing the cost of components by a structure wherein the pressure-sensitive element has substantially planar circumferential fringe part and the central part of curved face. SOLUTION: Piezoelectric elements 2, 3 are clamped, at the circumferential fringe part thereof, by means of pairs of holders 12, 13 and 14, 15. The piezoelectric element 2, 3 has substantially planar circumferential fringe part and substantially hemispherical central part. The holders 12, 13 and 14, 15 have substantially planar faces for clamping the piezoelectric elements 2, 3. The piezoelectric elements 2, 3 are juxtaposed in an intermediate case 17 such that the opposite sides thereof are oriented in same direction and the faces of same direction have an identical polarization polarity thus forming pressure detecting sections 4, 5. According to the arrangement, the piezoelectric elements 2, 3 are not deformed even if the faces of two holders 12, 13 and 14, 15 for clamping the piezoelectric elements 2, 3 are shifted at the time of manufacture and fluctuation in the output from the piezoelectric elements 2, 3 due to noise components can be suppressed.

公开(公告)号：JP2000117829A

公开(公告)日：2000-04-25

申请号：JP29853898

申请日：1998-10-20

Applicant: TORAY INDUSTRIES

Inventor： YUSHIO HARUHISA ,  OKASHIRO HIDETOSHI ,  MAEHARA KENSAKU

IPC: B29C55/12 ,  B29L7/00

Abstract: PROBLEM TO BE SOLVED: To smoothly pass a film to a tenter even in the case of a high speed production and to reduce a scrap generation amount by passing the film to the tenter at a lower speed than a predetermined speed at an inlet of the tenter at the time of producing. SOLUTION: A uniaxially oriented film 11 is passed through a film feeding direction switching means 12, then introduced into a tenter 13, preheated in the tenter 13, and then laterally oriented to form a biaxially oriented film 14. A suction belt 45 is provided as a film conveying means for guiding the film 11 to a film grasping position 44 of the tenter 13 at an inlet of the tenter 13. The film 11 is grasped by a clip 46. In this case, a speed of the tenter 13 is set to a normal production speed at the inlet of the tenter 13, i.e., not higher speed than a predetermined speed. Then, a take-up unit or a winder is started at the same speed as a film passing speed at the tenter 13, and the film from the tenter 13 is wound by the take-up unit or the winder.

公开(公告)号：JPH09126928A

公开(公告)日：1997-05-16

申请号：JP28715395

申请日：1995-11-06

Applicant: TORAY INDUSTRIES

Inventor： KATO TOMIO ,  TANAKA HARUMI ,  MAEHARA KENSAKU

IPC: G01F1/00 ,  G01D3/028 ,  G01L9/00 ,  G01L9/08

Abstract: PROBLEM TO BE SOLVED: To provide a reliable pressure sensor with a high sensitivity, a high stability, and a high common-mode rejection ratio. SOLUTION: A fluid pressure at a first part is introduced to a surface of a pair of piezoelectric elements 2 and 3 where polarization polarities differ from each other, a fluid pressure at a second part is introduced to a surface on the opposite side of the above surface of the piezoelectric elements 2 and 3, each of one electrode on surfaces of both piezoelectric elements 2 and 3 where polarization polarities mutually differ is connected, and a signal taken from the other electrode is supplied to a balanced-type amplification circuit which is included in a signal processing circuit 5 with a constant voltage circuit 51.