公开(公告)号：JPH0929741A

公开(公告)日：1997-02-04

申请号：JP17992295

申请日：1995-07-17

Applicant: TORAY INDUSTRIES

Inventor： KASHIWAGI YASUHIRO ,  YOSHIZAWA MASANORI ,  YAMASHITA MASAKI

IPC: B29B11/16 ,  B29K105/06 ,  B32B7/06 ,  B32B27/04 ,  C08J5/24

Abstract: PROBLEM TO BE SOLVED: To manufacture a rolled prepreg material having high quality level by preventing the mixture of foreign matter with the prepreg. SOLUTION: In the steps of manufacturing a rolled prepreg material, a wiping material is brought into contact with the surface of a sheet-like carrier not to be laminated to the prepreg to wipe to clean a foreign matter when the material laminated with the carrier on the prepreg is wound, and the sticking of the matter to the prepreg in the case of winding is prevented.

公开(公告)号：JP2002357518A

公开(公告)日：2002-12-13

申请号：JP2001166261

申请日：2001-06-01

Applicant: TORAY INDUSTRIES

Inventor： YOSHIZAWA MASANORI ,  MIKURINO KATSUYA ,  SHINOHARA KIYOSHI

IPC: G01N1/28

Abstract: PROBLEM TO BE SOLVED: To provide a strand tensile test piece by which the precise tensile characteristic of a strand can be grasped, even with a thick sized skein. SOLUTION: In the strand tensile test piece in which a reinforcing fiber composed of a multifilament thread is impregnated with a resin so as to be hardened, the ratio of the thread width to the thickness in the cross section of the test piece is 5 or more.

公开(公告)号：JPH08164520A

公开(公告)日：1996-06-25

申请号：JP31219994

申请日：1994-12-15

Applicant: TORAY INDUSTRIES

Inventor： YOSHIZAWA MASANORI ,  KIKUCHI HITOSHI ,  YAMASHITA MASAKI

IPC: B29B11/16 ,  B29K105/08

Abstract: PURPOSE: To obtain a resin raw material for a prepreg used as a matrix resin giving a prepreg reduced in stripelike defect or defect such as resin impregnation irregularity by setting an amt. of foreign matter at the time of filtering using a mesh metal net with a specific mesh size under atmospheric pressure to a specific value or less. CONSTITUTION: When a matrix resin is applied in a film like state by a coater, the resin is usually stagnated within a pot for a definite time but, when foreign matter is present, it is gradually grown. If foreign matter is present when a resin soln. passes through the slit of a coater, the filtering due to the slit is generated and not only the accumulation of foreign matter but also the growth thereof are generated to obstruct the flow of the resin emitted from the slit of the coater to generate a stripelike defect in a resin film. Then, the amt. of the foreign matter in a resin raw material for a prepreg at a time when the raw material is filtered under normal pressure by a #200 mesh metal net is set to 0.1g/kg or less. Further, filtering under normal pressure is performed in such a state that the resin raw material is held to temp. becoming liquid or dissolved in a solvent.

公开(公告)号：JPH11254435A

公开(公告)日：1999-09-21

申请号：JP5703298

申请日：1998-03-09

Applicant: TORAY INDUSTRIES

Inventor： YAMANE SHOJI ,  YOSHIZAWA MASANORI ,  KIKUCHI HITOSHI

IPC: B29B11/16 ,  C08J5/24

Abstract: PROBLEM TO BE SOLVED: To manufacture a wide and extremely thin resin film for a low resin weight per unit area prepreg for manufacturing a molded body of good quality and quality level generating a small amount of resin loss and provide its manufacturing method and also manufacture a low resin weight per unit area prepreg of good quality level using the film. SOLUTION: Resin of 50 cm width or more is applied on a release sheet in the setting of the 20 g/m average weight per unit area or less and at 100% weight per unit area unevenness or less and the volatile content is 4 wt.% or less for the manufacture of a resin film for manufacturing a prepreg, and a prepreg using the film and the manufacturing methods for the film and the prepreg are also provided.