Traitement en cours

Veuillez attendre...

Paramétrages

Paramétrages

Aller à Demande

1. US4975232 - Process for producing fiber reinforced plastics linear materials

Office États-Unis d'Amérique
Numéro de la demande 07231914
Date de la demande 11.10.1988
Numéro de publication 4975232
Date de publication 04.12.1990
Numéro de délivrance 4975232
Date de délivrance 04.12.1990
Type de publication A
CIB
B29C 53/00
BTECHNIQUES INDUSTRIELLES; TRANSPORTS
29TRAVAIL DES MATIÈRES PLASTIQUES; TRAVAIL DES SUBSTANCES À L'ÉTAT PLASTIQUE EN GÉNÉRAL
CFAÇONNAGE OU ASSEMBLAGE DES MATIÈRES PLASTIQUES; FAÇONNAGE DES MATIÈRES À L'ÉTAT PLASTIQUE NON PRÉVU AILLEURS; POST-TRAITEMENT DES PRODUITS FAÇONNÉS, p.ex. RÉPARATION
53Façonnage par cintrage, pliage, torsion, redressage ou aplatissage; Appareils à cet effet
B29C 53/14
BTECHNIQUES INDUSTRIELLES; TRANSPORTS
29TRAVAIL DES MATIÈRES PLASTIQUES; TRAVAIL DES SUBSTANCES À L'ÉTAT PLASTIQUE EN GÉNÉRAL
CFAÇONNAGE OU ASSEMBLAGE DES MATIÈRES PLASTIQUES; FAÇONNAGE DES MATIÈRES À L'ÉTAT PLASTIQUE NON PRÉVU AILLEURS; POST-TRAITEMENT DES PRODUITS FAÇONNÉS, p.ex. RÉPARATION
53Façonnage par cintrage, pliage, torsion, redressage ou aplatissage; Appareils à cet effet
14Torsion
B29C 70/04
BTECHNIQUES INDUSTRIELLES; TRANSPORTS
29TRAVAIL DES MATIÈRES PLASTIQUES; TRAVAIL DES SUBSTANCES À L'ÉTAT PLASTIQUE EN GÉNÉRAL
CFAÇONNAGE OU ASSEMBLAGE DES MATIÈRES PLASTIQUES; FAÇONNAGE DES MATIÈRES À L'ÉTAT PLASTIQUE NON PRÉVU AILLEURS; POST-TRAITEMENT DES PRODUITS FAÇONNÉS, p.ex. RÉPARATION
70Façonnage de matières composites, c. à d. de matières plastiques comprenant des renforcements, des matières de remplissage ou des parties préformées, p.ex. des inserts
04comprenant uniquement des renforcements, p.ex. matières plastiques auto-renforçantes
B29C 70/52
BTECHNIQUES INDUSTRIELLES; TRANSPORTS
29TRAVAIL DES MATIÈRES PLASTIQUES; TRAVAIL DES SUBSTANCES À L'ÉTAT PLASTIQUE EN GÉNÉRAL
CFAÇONNAGE OU ASSEMBLAGE DES MATIÈRES PLASTIQUES; FAÇONNAGE DES MATIÈRES À L'ÉTAT PLASTIQUE NON PRÉVU AILLEURS; POST-TRAITEMENT DES PRODUITS FAÇONNÉS, p.ex. RÉPARATION
70Façonnage de matières composites, c. à d. de matières plastiques comprenant des renforcements, des matières de remplissage ou des parties préformées, p.ex. des inserts
04comprenant uniquement des renforcements, p.ex. matières plastiques auto-renforçantes
28opération de façonnage des matières composites comprenant uniquement des renforcements
40Façonnage ou imprégnation par compression
50pour la fabrication d'objets de longueur indéfinie, p.ex. de "prepregs", de préimprégnés ou de nappes multiaxiales
52Pultrusion, c.à d. façonnage et compression par traction continue à travers une matrice
CPC
B29C 70/52
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
70Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
04comprising reinforcements only, e.g. self-reinforcing plastics
28Shaping operations therefor
40Shaping or impregnating by compression
50for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
52Pultrusion, i.e. forming and compressing by continuously pulling through a die
B29C 48/06
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
03characterised by the shape of the extruded material at extrusion
06Rod-shaped
B29C 48/156
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
15incorporating preformed parts or layers, e.g. extrusion moulding around inserts
156Coating two or more articles simultaneously
B29C 48/21
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
16Articles comprising two or more components, e.g. co-extruded layers
18the components being layers
21the layers being joined at their surfaces
B29C 53/14
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
53Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
14Twisting
B29K 2105/06
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
2105Condition, form or state of moulded material ; or of the material to be shaped
06containing reinforcements, fillers or inserts
Déposants Nitto Denko Corporation
Inventeurs Hattori Masaaki
Komada Mitsuharu
Ioka Hario
Yamamoto Yasuo
Mandataires Sughrue, Mion, Zinn, Macpeak & Seas
Données relatives à la priorité 61296193 11.12.1986 JP
Titre
(EN) Process for producing fiber reinforced plastics linear materials
Abrégé
(EN)

Process for producing a fiber reinforced plastics linear material like a tension member for optical communication cables. A groove capable of accomodating an optical fiber is formed in the outer surface of the tension member. In accordance with the conventional method, the groove is necessarily formed in parallel along the axial direction of the tension member and, therefore, if the tension member is bent in the state that the optical fiber is placed in the groove, a force due to bending is applied directly to the optical fiber and the transmission loss of the optical fiber is increased. In accordance with the present invention, a tension member for optical communication cables in which groove is twisted in the spiral form relative to the axial direction of the groove is produced by (1) passing a resin impregnated glass fiber through a molding die heated and then passing it through a curing zone while applying a twisting force, or (2) after completely curing the resin, passing through a heating zone independently provided and during this passage, applying a twisting force. Even if this tension member is bent in the state that an optical fiber is placed in the groove, almost no twisting force is applied to the optical fiber.

Également publié en tant que