The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 2002
Filed:
Aug. 09, 2000
Kinta Nakagawa, Osaka, JP;
Tomotoshi Ohya, Ishikawa, JP;
Yoshimi Ogita, Ishikawa, JP;
Toshiro Ohira, Ishikawa, JP;
Nobuyuki Takasugi, Ishikawa, JP;
Sekisui Jushi Kabushiki Kaisha, Osaka, JP;
Abstract
The stretch wrapping machine employs a touch panel input device as input means for setting the film wrapping data into the controller, and the display of the touch panel input device provides digital presentation of the information on set values of the film wrapping data or a machine failure. Wrapping conditions (e.g. feed rate of the feed mechanism, control amount of the feed roller, rotation ratio of the feed roller to a stretch roller) can be automatically computed simply by entering film wrapping data on the number of wraps on the load, the film overlap amount, the film wrapping tension or the film stretch ratio, etc. The film wrapping operation is performed based on the computated conditions. The wrapping machine further comprises a load detection unit for detecting a load which is imposed on a film fed out from the feed roller onto an article. While constantly computing a difference between a measured value of the wrapping tension deriving from the detected value of the load and a set value of the wrapping tension as set by the input means, the number of feed roller rotations is feedback controlled in such a manner as to decrease the difference to zero.