Patent ID: 6766625
Filing Date: 2004-07-27
Classification: B65B

Abstract:
An apparatus for wrapping reams of paper, which apparatus comprises:a feeding unit for forming and feeding the reams along a horizontal path; folding units for folding a wrapping sheet into a first tube round a ream of paper; first folding devices for the lateral folding of the first tube in order to form lateral flaps so as to obtain two lower tongues and two upper tongues; second folding devices for folding the upper tongues; first spray devices for spraying an adhesive substance on the inner surfaces of the lower tongues; third folding devices for folding the lower tongues over the respective upper tongues, already folded, in order to obtain a pack containing the ream; the folding units being adjacent to the devices in order simultaneously to form the lateral flaps the folding units comprising a first folding unit for folding the wrapping sheet in a U-shape around the ream; the wrapping sheet comprising, when folded around the ream in the U-shape, an upper limb wound on the ream; the first folding unit comprising a lower belt conveyor and an upper belt conveyor for moving the ream together with the U-shape folded wrapping sheet along the path, the upper belt conveyor comprising a belt wound about a series of pulleys; and first actuation means being provided for displacing two pulleys in order to displace the belt in a retracted position enabling the apposition of an adhesive substance on the upper limb by means of a second spray device.