DETECTOR FOR EDGE PART FILM CRACK OF LAMINATED FILM

PURPOSE: To provide a detector capable of stably detecting a film-cracked position in an edge part of a laminated film such as an extrusion laminated film or the like when it is detected, and especially even when a plastic film laminated on a base film is transparent. CONSTITUTION: A semiconductor l...

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Bibliographische Detailangaben
Hauptverfasser:	KATSUMATA MASAYOSHI, OSUMI TAKESHI, FUKANO KATSUNORI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PERFORMING OPERATIONS PHYSICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TESTING TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PURPOSE: To provide a detector capable of stably detecting a film-cracked position in an edge part of a laminated film such as an extrusion laminated film or the like when it is detected, and especially even when a plastic film laminated on a base film is transparent. CONSTITUTION: A semiconductor laser beam source 11 emitting laser beams capable of penetrating an extrusion laminated film 6, and a photoelectric conversion element 12 which receives the laser beams and converts them to electric signals are respectively arranged on both end parts in a width direction of the extrusion laminated film 6 under a state wherein they are opposed to each other by putting the extrusion laminated film 6 between them between a manufacturing device for the extrusion laminated film 6 wherein a plastic film is laminated on a base film, and a trimmer 7 which cuts both end parts in a width direction of the manufactured extrusion laminated film 6, and shapes the film to a specified width.