APPARATUS FOR PACKAGING PRINTED BOARD UNIT

PURPOSE:To permit the formation of a packaging bag with the sealing portions firmly attached together, by providing one heating roll with a projection portion on its side face, the other heating roll on its side face with a recess portion engageable with said projection portion and at least either t...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	NAGASAKA YOSHIHISA
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CONVEYING ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY HANDLING THIN OR FILAMENTARY MATERIAL MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGINGARTICLES OR MATERIALS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS PACKING PERFORMING OPERATIONS PRINTED CIRCUITS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STORING TRANSPORTING UNPACKING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PURPOSE:To permit the formation of a packaging bag with the sealing portions firmly attached together, by providing one heating roll with a projection portion on its side face, the other heating roll on its side face with a recess portion engageable with said projection portion and at least either thereof with a cooling means. CONSTITUTION:One heating roll 31 is provided with a belt-shaped projection portion 32 on its surface and the other heating roll 33 with a recess portion 34 mating with the projection portion 32. This provision results in increased contact area between these rolls and therefore increased sealing strength of the sealing portion 36 of a packaging bag 35, making the firm attachment possible. In order to prevent the occurrence of a phenomenon that heat is not dissipated from the heat sealing portion 36 after sealing the packaging bag 35 due to the increased contact area, a hollow gas passageway 37 is provided in the interior of the heating roll 31, through which cooling air passes.