Sidel Participations

Thierry Deau

Mikael Derrien

Julien Gendre

Isabelle Monin

Pierrick Protais

Franck Santais

Guy Feuilloley

Denis Gillet

Isabelle Maillot

Thierry Lemble

Ertan Cetinel

Cédric Bianchini

Yvan Benich

Frédéric Lecomte

The invention relates to a method for manufacturing a container (), by drawing and blowing in a mould (), from a blank () made of plastic material, which includes the following operations: inserting the blank () in the mould (); controlling the opening of a pre-blowing solenoid valve () at a predetermined pre-blowing rate (D); measuring the current pressure (P) inside the blank (); detecting an actual time (t) for starting the pre-blowing step; calculating a time (t) for ending the pre-blowing step such that: t=t+&#x394;t&#x2212;&#x3b4;, wherein: &#x394;t is a predetermined time for opening the pre-blowing solenoid valve and &#x3b4; is a predetermined constant; deducing therefrom an actual pressure (P) at the end of the pre-blowing step; comparing said pressure to a theoretical pressure (P); and if said pressures are found to be non-identical, ordering a modification of the pre-blowing rate (D).

Method for manufacturing a container from a blank, including feedback in accordance with an actual pressure at the end of the pre-blowing step

A method of manufacturing a container from a blank in a stretch blowing assembly equipped with a mold provided with a wall and a mold bottom axially movable between an extended position and a retracted position and a stretch unit having a rod axially movable with respect to the wall and a device for controlling the movement of the rod. The method involves a stretch blowing phase; a boxing phase during which the mold bottom, initially in the extended position, is moved towards its retracted position, the boxing phase having a retraction operation including controlling a movement of the rod in synchronization with the movement of the mold bottom, or releasing the rod to allow the free axial movement thereof.

Method for the stretch-blowing of a container, comprising a retraction of the stretch rod during a boxing operation

A control system () for a unit () for forming containers () from blanks () provided with a series of forming stations () each provided with a mold (), the system () including a master control unit () and a series of slave controllers () each associated with at least one forming station (), each controller () being programmed to: control the or each associated forming station () according to a forming command (CF) loaded in the controller (); take into account a pressure measurement in the mold (), from this measurement, establish a blowing curve describing the change in the fluid pressure in the mold (), analyze the blowing curve and extract therefrom the coordinates of at least one singular point (S); communicate the singular point (S) to the control unit ().

Control system of a container forming unit comprising a master control unit and slave controllers

Method of manufacturing a container () by stretch-blow molding in a mold () from a blank () of plastic material, which comprises the operations consisting of:

Method for manufacturing a container from a preform, with feedback depending on a minimum pressure detected

Method of manufacturing a container from a blank of plastic material, within a mold provided with a wall defining a cavity with the impression of the container, and a mold bottom that is movable with respect to the wall between a retracted position and a deployed position in which it extends protruding into the interior of the cavity in order to form a hollow recess in the container. The method includes inserting the blank into the mold; a pre-blowing operation including injecting a fluid under pressure into the blank, at a pre-blowing pressure; a blowing operation including injecting a fluid under pressure into the blank at a blowing pressure that is greater than the pre-blowing pressure; and a boxing operation, initiated prior to the blowing operation, and including moving the movable mold bottom from its retracted position to its deployed position.

Method for manufacturing containers, including an anticipated boxing operation

A machine for manufacturing containers from blanks of plastic material, which includes an oven furnished with a plurality of radiation sources for heating blanks as they travel through at a predetermined speed of travel and heating profile, and a programmed control center for modifying the speed of travel and heating profile based on a temperature measurement made on a blank leaving the oven, and a pressure measurement made in the blank during a subsequent blowing.

Method and machine for manufacturing containers allowing a modification of heating rate

Method for producing a vessel () by blowing in a mould () from a preform () made of plastic material, comprising the operations consisting in:

Method for producing vessels with feedback depending on the pre-blowing starting point

A method of measuring the wall temperature of a container blank, including the following operations: inserting a temperature probe into the blank in motion, upon completion of the operation of heating the blank in an oven; maintaining the probe in the blank in motion for a predetermined time; making a temperature measurement by the probe maintained in the blank without contact with the inner wall of the blank; and storing the temperature or the temperature profile thus measured.

Device and method for measuring the temperature of a wall in a vessel preform

A method for producing a vessel by stretch blow-molding in a mold from a preform made of plastic material includes heating the preform and introducing the preform in the mold. The preform is stretched by a rod displaced at a predetermined stretching speed. At a pre-blowing cue, the electrovalve is opened for establishing a communication between the inside of the preform and a gas source at a predetermined pre-blowing pressure and a pre-blowing flow rate. Pressure inside the preform is measured and a pressure peak is detected. The moment at which this pressure peak occurs and the corresponding pressure inside the preform is stored and compared with a predetermined moment and pressure for a theoretical pressure peak. Depending on the result, at least one of the following are modified: pre-blowing pressure, pre-blowing flow rate, pre-blowing cue, stretching speed, and heating temperature.

Method for producing a vessel from a preform, with feedback depending on the development point of the preform

A method for producing a vessel (), involving: placing a preform () into the mold; at the pre-blowing cue (t), controlling the opening of an electrovalve () for establishing communication between the preform () and a source () of gas at a predetermined pre-blowing pressure (P); measuring the pressure (P) inside the preform (); at the blowing cue (t), controlling the opening of an electrovalve () for establishing a communication between the preform () and a source () of a gas at a blowing pressure (P) higher than the pre-blowing pressure (P); memorising the variations of the pressure (P) inside the preform () at least during the interval between the pre-blowing cue (t) and the blowing cue (t); detecting the expansion end moment (t) from which the pressure in the preform () increases in a linear manner; and advancing the blowing cue (t) according to the expansion end moment (t).

Method for producing a vessel from a preform, with feedback depending on the expansion end point of the preform

A device () for loading containers (), which are provided with a neck (), on an transporting element () includes a member () for individually grasping the container by the neck thereof, wherein the grasping member is used for catching or releasing the neck of a preform by the vertical slide of the preform with respect to the grasping member during an operation for catching or releasing it, the loading device includes elements () for selectively ejecting the container from the transporting element during the releasing operation. The elements for ejecting the container are provided with container receiving members () which are used for catching the container prior to the releasing operation and are mounted in a horizontally movable manner in such a way that the trajectory of the receiving members are vertically superimposed and synchronized with the trajectory of the grasping device.

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Octeville sur Mer, France

Thierry Deau