Delabeler for plastic containers
AssigneeOwens-Illinois, Inc.
InventorJohn J. Matuszak
Life of this patent
Estimating the term…
Abstract
A plastic bottle delabeling apparatus in which a series of heated rolls that are driven at increasingly greater peripheral velocity engage the plastic bottles to flatten and stretch the bottles. While flattening the bottles, the apparatus heats the plastic bottle surface by the contact with the heated rolls, effectively softening the bond of any label to the bottle. The flattened bottle is then passed through a pair of opposed rotating brush rolls which strip the loosened label from the bottle. The rolls are in vertically opposed sets with the peripheral velocity of the sets of rolls being successively greater in the direction of movement of the bottles therebetween.
Claims10
Apparatus for removing extraneous material from plastic containers for recycling of the plastic, comprising an infeed conveyor, a first series of horizontal rolls in line with said conveyor, a second series of horizontal rolls positioned above said first series, means mounting said second series of rolls at progressively less vertical distance from said first series of rolls in a direction away from said infeed conveyor, means for driving said first series of rolls at progressively greater velocities the further the roll is from the infeed conveyor, means connected to said rolls for heating said rolls, a pair of vertically opposed wire brush rolls positioned adjacent the last heated rolls, means for driving said brush rolls at a much lesser peripheral velocity than said heated rolls and in an opposed direction to the movement of a container therebetween, and a pair of opposed, driven pull rolls positioned adjacent said brush rolls, for pulling flattened containers from the brush rolls.
Dependencies are inferred from the claim text.