SYNTHETIC RESIN CONTAINER, AND INSPECTION METHOD

To inspect a sealed state of a seal part further easily in a synthetic resin container which is sealed by heat-sealing after filling a content therein.SOLUTION: In a range which includes at least one side of seal parts which overlap with each other when being heated-seal, a foamed region is formed w...

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Bibliographische Detailangaben
Hauptverfasser:	IINO HIROYOSHI, ICHIKAWA KENTARO, HIRAMATSU KENTA
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING HANDLING THIN OR FILAMENTARY MATERIAL PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS STORING TRANSPORTING
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Beschreibung
Zusammenfassung:	To inspect a sealed state of a seal part further easily in a synthetic resin container which is sealed by heat-sealing after filling a content therein.SOLUTION: In a range which includes at least one side of seal parts which overlap with each other when being heated-seal, a foamed region is formed which includes air bubbles inside in an unheated-sealed state. By detecting an increase degree of light transmissivity of a heated-seal part 8 formed after heated-sealing the seal parts, compared with the light transmissivity of the foamed region which remains unheated-sealing, quality of a sealed state of the seal parts is determined.SELECTED DRAWING: Figure 3 【課題】内容物を充填した後に、ヒートシールによって封止される合成樹脂製容器において、その封止部のシール状態をより簡便に検査できるようにする。【解決手段】ヒートシールする際に互いに重なり合う封止部の少なくとも一方側を含む範囲に、未ヒートシール状態において内部に気泡を含む発泡領域を形成しておき、未ヒートシール状態のまま残る発泡領域の光透過率と比較して、封止部をヒートシールした後に形成されるヒートシール部８の光透過率の増加度合いを検出することによって、封止部のシール状態の良否を判定する。【選択図】図３