Provided is a method for heating plastic preforms, wherein the plastic parison are transported along a predetermined transport path and are heated during this transport, wherein at least one first heating section with at least one first heating element as well as at least one second heating section with at least one second heating element is arranged along the transport path, by a first temperature measuring device an actual temperature of the plastic preforms is measured in or before a start region of the transport path, and as a function of this actual temperature of the plastic preforms the at least one first heating element is controlled in such a way that the plastic preforms reach a predetermined target temperature after heating by this at least one first heating element.

Provided is an apparatus for heating plastic preforms, with a transport device which transports the plastic preforms along a predefined transport path, wherein this transport device has a plurality of holding elements for holding the plastic preform, and with at least one first heating section which is arranged along the transport path, and at least one second heating section which is arranged along the transport path downstream of the first heating section, wherein the heating sections each include a plurality of independently controllable heating elements which allow heating of the plastic preforms in several heating zones, lying above each other in the longitudinal direction of the plastic preforms, with a temperature profile which changes in the longitudinal direction of the plastic preforms, wherein the apparatus includes a control device for controlling these heating sections.

Method of heating a blank (2) of plastic material for the manufacture of a hollow body by forming from the blank (2), which comprises the operations consisting of: inserting the blank (2) into an oven (7) provided with sources (9) of monochromatic or pseudo-monochromatic electromagnetic radiation emitting in the infrared range; exposing the blank (2) to the radiation from the sources (9), adjusted to a predetermined emission power for a predetermined exposure time; measuring a temperature on an outer wall (16) of the blank (2);
Characterized in that it comprises an operation consisting of: adjusting the exposure time and/or the emission power so that said temperature at an exit from the oven (2) [sic: (7)], does not fall between T.sub.g and 1.8.Math.T.sub.g, where T.sub.g is the glass transition temperature of the material.

- - - Provided is a control method for a manufacturing device for manufacturing a resin container by blow-molding a preform, the method including: acquiring a target value for the temperature inside a heating device for heating the preform to a temperature that is appropriate for blow-molding; acquiring the actual measured value of the temperature inside the heating device, the temperature having been detected by a sensor disposed inside the heating device; calculating the temperature difference between the target value and the actual measured value; and adjusting the heating performance and the cooling performance of the heating device on the basis of the temperature difference. - - -

A heat treatment device for a PET bottle preform with an integral handle includes an air-cooling knife, a heating furnace, and a transport mechanism. The air-cooling knife is disposed on an outlet side of the heating furnace, the bottle preform is transported into the heating furnace through the transport mechanism, heated in the heating furnace, and transported to the air-cooling knife, and the air-cooling knife jets airflow to and cools a lower end of a handle of the bottle preform, appropriately reducing the temperature at junction of the lower end of the handle and a bottle body so that a gentle transition between the temperature of the bottle body and the temperature of the handle is achieved, and the handle is not easily deformed after the bottle preform is blown, thereby effectively improving the quality of the bottle preform after blown.

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 apparatus (5) comprising an array of infrared emitters (50) arranged in multiple columns (Cj) and rows (Ri); —setting power levels of the infrared emitters (50) so as to divide said array into subsets of columns (SCn); and—heating the preform while translating it in a direction parallel to the rows (Ri), and simultaneously rotating it around its longitudinal axis, the rotation and translation speeds, and the power levels of the infrared emitters (50) being set so that the power levels of the subsets of columns (SCn) facing zones (42) of the body portion extending longitudinally are different from the power levels of the subsets of columns facing the rest of the body portion, said zones extending relative to one another in a polygonal array.

Method for heating a preform (1) comprising: introducing the preform (1) into a heating apparatus (5) comprising an array of infrared emitters (50) arranged in multiple columns (Cj) and multiple rows (Ri), orienting angularly the preform at an input angular position by rotating the preform around the longitudinal axis; setting power levels of the infrared emitters (50) so as to divide the array of infrared emitters (50) into subsets of columns (SCn), each subset of columns (SCn) generating heat at a different power level from an adjacent subset of columns (SCn); and heating the preform (1) with the array of infrared emitters (50) while translating the preform (1) in a direction parallel to the rows (Ri) of the array at a translation speed, and simultaneously rotating said preform (1) around its longitudinal axis (A1) in front of said infrared emitters (50) at a rotation speed.

This information management method for a resin molded product in a molding device for intermittently producing resin molded products includes: classifying the resin molded products into molded product groups for each molding cycle; acquiring an information group for each of the molded product groups; and recording the acquired information groups in association with the molded product groups.

A system for direct injection of selected thermal-infrared (IR) wavelength radiation or energy into articles for a wide range of processing purposes is provided. These purposes may include heating, raising or maintaining the temperature of articles, or stimulating a target item in a range of different industrial, medical, consumer, or commercial circumstances. The system is especially applicable to operations that require or benefit from the ability to irradiate at specifically selected wavelengths or to pulse or inject the radiation. The system is particularly advantageous when functioning at higher speeds and in a non-contact environment with the target.

The invention relates to a method for operating a temperature control device (116) for the thermal conditioning of preforms (14) made of a thermoplastic material in the temperature control device (116), wherein the respective preform (14) is prepared by the thermal conditioning in the temperature control device (116) for a subsequent forming procedure, in which the preform (14) is formed into a container (12) using a forming fluid supplied under a pressure into the preform (14) and in which the preform (14) is stretched in its axial direction by a stretching unit (11), wherein the temperature control device (116) is regulated in its heating power by a heating regulator (400, B) on the basis of a metrologically determined guide value, and is characterized in that a guide value is metrologically detected, from which the stretching force exerted on the preform (14) is derivable. Furthermore, the invention relates to a temperature control device (116) for the thermal conditioning of preforms (14) made of a thermoplastic material which is regulated on the basis of the guide value, wherein the guide value is derived from the stretching force exerted by the stretching unit (11). Finally, the invention relates to a container production machine having a temperature control device as defined above.