Process and device for removing objects from the outside of containers
First Claim
1. Process for removing objects such as labels from molecularly oriented plastic containers comprising (1) immersing one or more plastic containers in a liquid bath, the temperature of which is at least as high as the molecular disorientation temperature of the plastic and the softening temperature of any adhesive which fastens the objects to the containers and (2) mechanically separating the removed objects from the plastic containers by means of a vibrating surface to which the removed objects and plastic containers are supplied after leaving the liquid immersion bath.
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Accused Products
Abstract
Process and device for delabeling of plastic containers by immersing them in a liquid bath heated to above the disorientation temperature of the containers and thereafter separating the loose labels (optionally cups) from the container bodies by bringing them on an inclined sieve vibrating in such a way that when the screen deck is in its highest position in the vibrating motion, the component of motion parallel to the screen deck is directed toward the highest point of the screen.
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Citations
12 Claims
- 1. Process for removing objects such as labels from molecularly oriented plastic containers comprising (1) immersing one or more plastic containers in a liquid bath, the temperature of which is at least as high as the molecular disorientation temperature of the plastic and the softening temperature of any adhesive which fastens the objects to the containers and (2) mechanically separating the removed objects from the plastic containers by means of a vibrating surface to which the removed objects and plastic containers are supplied after leaving the liquid immersion bath.
- 11. A device for carrying out a process for removing objects such as labels from molecular oriented plastic containers including (1) immersing one or more plastic containers in a liquid bath, the temperature of which is at least as high as the molecular disorientation of the plastic and the softening temperature of any adhesive which fastens the objects to the containers and (2) mechanically separating the removed objects from the plastic containers, the device comprising (1) an immersion tank provided with a feed for the plastic containers and an outlet for the plastic containers and removed objects, the immersion tank having an essentially triangularly-shaped vertical cross-section with the plane which bisects one angle of the triangle being oriented vertically, the immersion tank being provided with means for conveying the plastic containers from the feed, which is positioned at the top of one oblique wall of the immersion tank, to the outlet, which is positioned at the top of the other oblique wall of the immersion tank, through a channel formed by the two oblique walls and two planar gratings which are positioned parallel to the oblique walls, (2) means for maintaining a liquid bath in the immersion tank at a desired temperature, and (3) means for mechanically separating the removed objects from the plastic containers, said means being in communication with said immersion tank outlet.
Specification