The present invention relates to a heating system for preforms upstream of a blowing or stretch-blowing machine, in particular a heating system using monochromatic infrared radiation, preferably laser-generated.

In particular, the invention relates to a heating system (301) for preforms (P), comprising a carousel for treating the preforms (P) comprising a plurality of heating elements (304) configured to be inserted either inside or outside each preform (P) and to radiate electromagnetic radiation in the infrared field which forms, in such a device, a disc of radiation according to a radial symmetry which departs from the center of the axis of the preform and which appropriately converges and diverges.

A heating apparatus that includes a plurality of heating devices for temperature conditioning of preforms made of a thermoplastic material to a temperature and temperature distribution suitable for blow molding, and a transport chain guided on a revolving chain path. The preforms are transported through the heating apparatus by the transport chain along a transport path. Along a heating section that is part of the transport path, the plurality of heating devices are stationarily arranged one after another in a transport direction. On at least one side facing the heating devices, counter reflectors are provided, which together with the heating devices form a tunnel-like heating area through which the preforms are transported for heating. At least one counter reflector travels along with the preform through the heating section.

Disclosed is a processing unit for an electromagnetic processing of plastic parisons and including a series of processing modules, each including a hollow housing, a light emitting assembly and a dehydration circuit for preventing each hollow housing from moisture via a dehydrated fluid. The dehydration circuit extends outside the main body, where the circuit can be in fluid communication with a source of pressurized fluid, on which are disposed a fluid dehydration unit and fluid circulation unit for forcing the dehydrated fluid to feed the respective hollow housings.

The invention relates to a heating device (H) comprising a heating section (24) for thermally conditioning preforms (1) consisting of thermoplastic material, comprising an upper orifice portion (21) having an opening, a collar-like support ring (54) arranged below the orifice portion (21), and a bottom portion (56) closed at the lower end, to a temperature profile suitable for blowmolding, wherein the heating device (H) has transportation means (33) for the transportation of the preforms (1) along a transportation path (55) of the heating device (H), and wherein the transportation means (33) each bear at least one handling means (41) for holding and handling the preforms (1), wherein a radiation screen (52), which follows the transportation path of the preforms (1), and which has a recess (53) at least on one end face to partially enclose a preform (1) held in the handling means (41) adjoining the recess (53), is provided in an intermediate space between two handling means (41) each provided for handling a preform (1), wherein the radiation screen (52) is arranged such that a surface region of the radiation screen (52), viewed in the longitudinal direction of the preform (1), at least temporarily overlaps on its side facing away with the orifice portion (21) with a surface region of the support ring (54) during the transportation of the preforms (1).

A method for tempering preforms in a blowing machine, wherein at least one heating box is arranged along a transport path for the preforms. The heating box has reflective walls and forms a heating channel through which the preforms are guided. The heating box also has a heater for heating the preforms in the heating channel, and a cooling device, having a blower, for cooling the reflective walls. The walls are cooled by a quantity of air flowing along the walls outside the heating channel. The heating output of the heater is adjustable. A control device provides open-loop and closed-loop control of the cooling output produced by the cooling device, in particular the supplied quantity of air, depending on the respective heating output of the heater, depending on a measurement of the heating output.

A method and device for producing containers filled with liquid content from preforms made of thermoplastic material. The liquid content is fed as a pressure medium into thermally conditioned preforms during a forming and filling phase in a mold of one of a plurality of forming stations arranged circumferentially spaced apart on a common, continuously rotationally driven working wheel. A compensating device compensates for thermal consequences of centrifugal force acting on the liquid content fed into the preform during the forming and filling phase. The compensating device imparts a temperature profile to the preform in a circumferential direction, which is not point-symmetrical in relation to a longitudinal axis of the preform to produce a thermally differentiated partial circumferential region. The preform is inserted into the mold such that the thermally differentiated partial circumferential region faces in a radial direction of the working wheel.

An apparatus for heating preforms made of thermoplastic material includes a conveyance device for preforms having a longitudinal axis of extension intended to move the preforms along a predefined path. The apparatus further includes a heating component arranged along at least one portion of the predefined path. The heating component includes at least one heating element and at least one front reflective element, which are mutually opposite with respect to the predefined path in order to form between them a transit tunnel for the preforms. The heating element includes IR (Infra-Red) and/or NIR (Near-Infra-Red) lamps. The front reflective element includes at least one contoured plate-like body in order to form, in the direction of extension of the predefined path, an alternation of closer portions and spaced portions with respect to the predefined path that is extended substantially parallel to the axes of extension of the preforms.

Disclosed is an apparatus for heating plastic preforms, having a transport device which transports the plastic preforms along a predetermined transport path, the transport device having a circulating transport and a plurality of holding devices for holding the plastic preforms, having a plurality of heating devices which are arranged stationarily along the transport path, in such a way that the plastic preforms transported along the transport path are heated by these heating devices, the heating devices each having a plurality of heating lamps, and the apparatus having a detection device which is configured to detect a failure of the heating lamps, wherein the apparatus has a control device which is configured to control the apparatus in dependence on a number of heating lamps detected having failed.

Method of manufacturing containers by blow-molding preforms, comprising a phase of heating the preforms (3) followed by a phase of forming the containers (this phase comprising a pre-blowing step followed by a blowing step), this method comprising the operations consisting in: detecting a pressure spike during the pre-blowing and comparing it against a reference spike, if the pressure in the pressure spike is below the reference pressure, checking an event history to determine whether a heating instruction and/or a forming instruction has been modified; if the result of this check is positive, commanding at least one of the following actions: o generating an alert alarm, o stopping the supply of preforms to the oven, o ejecting the containers derived from the affected preforms.

A heating device (14) includes: a tubular lamp (16) having two free end sections (32); at least one reflector (34) that extends longitudinally at a predefined transverse distance (D) from the lamp (16); two holding members (46) for holding the lamp (16) in a transverse position relative to the reflector (34), each holding member (46) being attached to the reflector (34); characterized in that each free end section (32) of the lamp (16) is removably mounted on each holding member (46) by reversibly interlocking a portion of the free end section (32) of the lamp with a housing (54) of complementary shape in a direction orthogonal to the longitudinal direction.