초록 ▼

A process for blow-molding and coating plastic containers under conditions of positive control in a close-coupled, compact machine to enhance operational efficiency. According to one of the preferred methods, the containers are coated promptly after the containers are discharged from hot molds to ta

A process for blow-molding and coating plastic containers under conditions of positive control in a close-coupled, compact machine to enhance operational efficiency. According to one of the preferred methods, the containers are coated promptly after the containers are discharged from hot molds to take advantage of the residual heat of the freshly blown containers to enhance curing/drying of the coating and to enhance bonding of the coating to the container surface. According to another one of the preferred methods, the containers are aseptically filled and capped either before or after the containers are coated. Alternatively, the process can include hot-filling and capping of containers in which the containers are coated promptly after being hot-filled to take advantage of the elevated temperature of the hot-filled containers.

대표청구항 ▼

1. A process for applying a coating to plastic containers blown from pre-forms having neck finishes, comprising the steps of: transferring a plurality of preforms in sequence into a blow-mold; blowing the preforms into containers in the blow-mold; discharging the blown containers from said blow-mo

1. A process for applying a coating to plastic containers blown from pre-forms having neck finishes, comprising the steps of: transferring a plurality of preforms in sequence into a blow-mold; blowing the preforms into containers in the blow-mold; discharging the blown containers from said blow-mold, the temperature of said discharged containers being at least 100.degree. F.; applying a coating to the blown containers, the temperature of said containers being at least 75.degree. F. when coated; and continually gripping the neck finish of each preform and container blown therefrom with a set of grippers throughout said transferring, blowing, discharging, and applying steps, said grippers transporting each preform and container blown therefrom under continuous positive control throughout the entire container blow-molding and coating process, whereby curing and bonding of the coating is enhanced by the elevated temperature of said containers when coated.