{"id":844,"date":"2018-03-09T14:19:26","date_gmt":"2018-03-09T05:19:26","guid":{"rendered":"http:\/\/kansenexp.co.jp\/eng\/?page_id=844"},"modified":"2024-07-23T17:10:44","modified_gmt":"2024-07-23T08:10:44","slug":"expanderroll","status":"publish","type":"page","link":"https:\/\/kansenexp.co.jp\/english\/expanderroll\/","title":{"rendered":"Expander Rolls"},"content":{"rendered":"

What is an expander roll?<\/strong><\/span><\/p>\n

Features of an expander roll<\/h2>\n

An expander roll refers to a bow-shaped roll for removing wrinkles and shrinkages that are generated in the manufacturing process of sheet products, such as films, paper, non-woven fabrics, and metallic foils.<\/p>\n

An expander roll is a bow-shaped roll.<\/h4>\n\n\n\n
\"\u30a8\u30ad\u30b9\u30d1\u30f3\u30c0\u30fc\u30ed\u30fc\u30eb\u3068\u306f01\"<\/a><\/td>\n\n

(1) An expander roll consists of multiple spools that incorporate ball bearings on the curved axis. A rubber expander roll refers to an expander roll covered with a rubber sleeve. A steel expander roll refers to an expander roll without such a sleeve.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Wrinkles and shrinkages are removed by stretching a web in the direction of the curved roll.<\/h4>\n\n\n\n
\"\u30a8\u30ad\u30b9\u30d1\u30f3\u30c0\u30fc\u30ed\u30fc\u30eb\u3068\u306f02\"<\/a><\/td>\n\n

(2) A web contacts the surface of a rubber sleeve or steel roll that rotates around a stationary axis. The spreading effect produced by the rotation of a curved sleeve or roll to the outward direction removes wrinkles and shrinkages. The front and reverse sides of a base material are not damaged by friction or slippage during traveling.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Correlation between the amount of bow and the amount of spreading of an expander roll<\/h2>\n