METHOD FOR HEATING PREFORMS AND CORRESPONDING METHOD FOR FORMING CONTAINERS

• Main Author: KANENGIESSER DAVID JEAN-PAUL
• Format: Patent
• Language: Chinese; English
• Published: 23.05.2023
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A method for heating a preform (1) comprising a body portion (4) extending along a longitudinal axis (A1). The method comprises the following steps: introducing the preform (1) into a heating device (5) comprising an array of infrared emitters (50) arranged in a plurality of columns (Cj) and a plurality of rows (Ri); -setting the power level of the infrared emitters (50) in order to divide the array into a subset of columns (SCn); and-heating the preform while translating the preform in a direction parallel to the row (Ri) and while rotating the preform about its longitudinal axis; the rotational speed, the translational speed and the power level of the infrared emitter (50) are set such that the power level of a subset of columns (SCn) of longitudinally extending regions (42) facing the body portion is different from the power level of a subset of columns facing the remainder of the body portion, said regions extending in a polygonal array with respect to each other. 一种用于加热预成型件(1)的方法，该预成型件包括沿着纵向轴线(A1)延伸的主体部分