Process of heat sealing a closure strip to a can lid
AssigneeSwiss Aluminium Ltd.
InventorsSiegfried Bloeck, Oldrich Stanek
Life of this patent
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Abstract
A process for manufacturing a lid having at least one outlet opening wherein a closure strip is sealed onto the lid covering the outlet opening comprising heating the closure strip to a temperature range of approximately 115.degree.-170.degree. C. within 10-15 seconds prior to sealing the closure strip onto the lid.
Claims1
A process for manufacturing a lid having at least one outlet opening provided with a closure strip for sealing said opening comprising providing a metal lid having an outlet opening, providing a closure strip coated with a sealable layer, heating said closure strip to a predetermined temperature and thereafter sealing said preheated closure strip to said metal lid shortly after heating said closure strip wherein said closure strip is coated with a sealable polyamide layer and is heated to a temperature of about between 115.degree. C. to 170.degree. C. in about 10 seconds to 15 seconds and wherein said coated and heated strip is sealed to said can lid not more than 30 seconds after the heating of said closure strip.
Dependencies are inferred from the claim text.