Arrangement and method for manufacturing PET bottle with handle formed at body part by injection blow molding, and PET bottle manufactured by them

摘要

The present invention relates to arrangement and method for manufacturing a PET bottle having a handle formed on a body by a continuous process by means of an injection blow molding method, and a PET bottle manufactured thereby. The arrangement comprises a preform blow mold for blowing air into a preform to expand the preform in a predetermined ratio to a complete shape so as to allow a handle section to be compressed, a blow mold having a handle forming portion for compressing both sides of the bottle to form the handle section, a cutting mold including a mold punch for cutting off a compressed portion of the handle section compressed by the handle forming portion, a bonding apparatus for bonding the compressed portion of the handle section compressed by the handle forming portion or a cut-off portion remaining in the handle section after cutting off the compressed portion of the handle section by means of the cutting mold, and a conveyer for conveying the preform or the molded PET bottle while clamping a neck of the preform or a neck of the molded PET bottle. The method comprises the steps of performing a first blowing operation to blow compressed air into a preform manufactured by injection molding in order to form a first hollow PET container after mounting the preform to a preform blow mold, performing a second blowing operation to blow compressed air into the first PET container in order to form a second PET container having a handle section formed on a predetermined area of a body after mounting the first PET container to a blow mold having a handle forming portion, cutting off a compressed portion of the handle section of the second PET container in order to form a third PET container, and bonding a cut-off portion of the handle section of the third PET container remaining after the step c) in order to form a fourth PET container. The PET bottle having the handle formed on the body is formed by use of the above arrangement and method.