Method and apparatus for treating a polyolefin surface to obtain an active surface which is receptive to inks and adhesives
OwnerRamon E. Poo, Faustino Pooinventors
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Abstract
A method of and apparatus for treating a polyolefin surface to become receptive to inks and adhesives is disclosed. The present invention provides a method of and apparatus for treating a polyolefin surface to become receptive to inks and adhesives, using the steps of introducing the shaped object onto a conveyor belt; conveying the shaped object towards an output end of the conveyor belt; aligning and guiding the shaped object across a treatment device to treat the entire 360.degree. surface of the shaped object. The treatment device includes, for example, an electrode spark generator.
Claims16
A method for treating a polymer surface of a shaped object in order to obtain an active surface which is receptive to inks and adhesives, comprising the steps of:
- introducing said shaped object onto an intake end of a moving conveyor belt of a conveyor mechanism inclining downward from said intake end, wherein said shaped object comprises two ends, and a substantially cylindrical body portion having said polymer surface thereon;
- conveying said shaped object in a direction of conveyance towards an output end of said conveyor belt;
- aligning said body portion of said shaped object alongside an operation side of said conveyor mechanism with said body portion oriented substantially parallel to said direction of conveyance;
- guiding said shaped object across a treatment device, wherein said guiding step comprises realigning said object to cause conveyance across said conveyor belt at a substantially constant distance from said treatment device with an adjustable guiding arm,
- rotating said shaped object along its lengthwise axis as said shaped object travels across said treatment device at a speed automatically controlled by said moving conveyor belt such that all sides of said cylindrical body pass said treatment device at a substantially constant distance, whereby said rotating is caused by friction between said body portion of said shaped object and a top face of said conveyor belt and said incline of said conveyor belt;
- treating said surface of said body portion of said shaped object by oxidizing said surface of said body portion of said shaped object with said treatment device to obtain said active surface;
- and
- discharging said shaped object from said output end of said conveyor belt.
A method for treating a polymer surface of a shaped object in order to obtain an active surface which is receptive to inks and adhesives, comprising the steps of:
- introducing said shaped object onto an intake end of a conveyor belt of a conveyor mechanism inclining downward from said intake end, wherein said shaped object comprises two ends, and a substantially cylindrical body portion;
- conveying said shaped object in a direction of conveyance towards an output end of said conveyor belt;
- aligning said body portion of said shaped object alongside an operation side of said conveyor mechanism with said body portion oriented substantially parallel to said direction of conveyance;
- guiding said shaped object across a treatment device, wherein said guiding step comprises realigning said object to cause conveyance across said conveyor belt at a substantially constant distance from said treatment device with an adjustable guiding arm;
- rotating said shaped object along its lengthwise axis as said shaped object travels across said treatment device such that all sides of said cylindrical body pass said treatment device at a substantially constant distance;
- treating said surface of said body portion of said shaped object by oxidizing said surface of said body portion of said shaped object with said treatment device to obtain said active surface;
- and
- discharging said shaped object from said output end of said conveyor belt.
A method for treating a polymer surface of a shaped object in order to obtain an active surface, comprising the steps of:
- introducing said shaped object onto an intake end of a moving conveyor belt of a conveyor mechanism inclining downward from said intake end, wherein said shaped object comprises two ends, and a substantially cylindrical body portion having said polymer surface thereon;
- conveying said shaped object in a direction of conveyance towards an output end of said conveyor belt;
- aligning said body portion of said shaped object alongside an operation side of said conveyor mechanism with said body portion oriented substantially parallel to said direction of conveyance;
- guiding said shaped object across a treatment device, wherein said guiding step comprises realigning said object to cause conveyance across said conveyor belt at a substantially constant distance from said treatment device with an adjustable guiding arm,
- rotating said shaped object along its lengthwise axis as said shaped object travels across said treatment device such that all sides of said cylindrical body pass said treatment device at a substantially constant distance, whereby said rotating is caused by friction between said body portion of said shaped object and a top face of said conveyor belt and said incline of said conveyor belt;
- treating said surface of said body portion of said shaped object by oxidizing said surface of said body portion of said shaped object by means of an electrical discharge from said treatment device to obtain said active surface;
- discharging said shaped object from said output end of said conveyor belt.
Dependencies are inferred from the claim text.