Method for controlling a heating station
AssigneeSidel Participations
InventorGuy FEUILLOLEY
Life of this patent
Estimating the term…
Abstract
Provided is a method for controlling a heating station of a facility for manufacturing containers by shaping preforms made of thermoplastic material using heating electromagnetic radiation. The method includes a first step of measuring the absorption spectrum of a wall of a preform in the visible light range upstream of a heating area, and a second step of controlling the power of the heating electromagnetic radiation on the basis of the absorption spectrum measured during the first step, in order to heat the body of the preforms to a set temperature.
Claims19
A method for controlling a heating station of a facility for manufacturing containers by shaping preforms made of thermoplastic material by stretch-blowing, the preforms being conveyed along a production path that passes through a heating area in which the preforms are exposed to continuous spectrum heating electromagnetic radiation, said spectrum at least partly extending into a visible light range, wherein the method comprises:
- a first step of measuring an absorption spectrum (σ(λ1)) of a wall of a preform in the visible light range in a measurement area traversed by the production path upstream of the heating area;
- and
- a second step of controlling a power of the heating electromagnetic radiation as a function of the absorption spectrum (σ(λ1)) measured during the first step, wherein the second step controls] heating a body of the preforms to a setpoint temperature.
A facility for implementing a method of controlling a heating station of a facility for manufacturing containers by shaping preforms made of thermoplastic material by stretch-blowing, the facility comprising:
- a conveyor for conveying preforms in a line along a predetermined production path successively passing through an area for heating a body of the preforms and through a station for shaping the preforms into a container by stretch-blowing,
- wherein the facility comprises a device for measuring an absorption spectrum (σ(λ1)) in a visible light range of at least one wall of the preforms when the preforms pass through an associated measurement area.
Dependencies are inferred from the claim text.