Oven for plastic preforms with partly transparent radiator
First Claim
1. Apparatus for heating plastic receptacles comprising:
- a transport device which transports the plastic receptacles along a predetermined transport path;
at least one heating device for heating the plastic receptacles, the heating device includinga radiation source which directs radiation at the plastic receptacles, wherein the radiation source emits infrared radiation in a first wavelength range and in a second wavelength range, andat least one first reflector element which reflects radiation emitted by the radiation source; and
a proportional reflection device configured to transmit infrared radiation emitted by the radiation source with wavelengths only in the first wavelength range onto the receptacle and configured to reflect infrared radiation with wavelengths in the second wavelength range back onto the radiation source, the proportional reflection device being configured to reflect a majority of the infrared radiation not being transmitted,wherein the first wavelength range is between 1700 nm and 2100 nm, andwherein the first wavelength range and the second wavelength range are different from each other.
1 Assignment
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Accused Products
Abstract
An apparatus for heating plastic receptacles includes a transport device which transports the receptacles along a predetermined transport path and at least one heating device for heating the plastic receptacles. The heating device includes at least one radiation source which directs radiation at the plastic receptacles and at least one first reflector element which reflects radiation emitted from the radiation source. The apparatus includes a proportional reflection device which transmits radiation emitted by the radiation source with wavelengths in a first predetermined wavelength range onto the receptacle and reflects radiation with wavelengths in a second predetermined wavelength range onto the radiation source.
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Citations
18 Claims
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1. Apparatus for heating plastic receptacles comprising:
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a transport device which transports the plastic receptacles along a predetermined transport path; at least one heating device for heating the plastic receptacles, the heating device including a radiation source which directs radiation at the plastic receptacles, wherein the radiation source emits infrared radiation in a first wavelength range and in a second wavelength range, and at least one first reflector element which reflects radiation emitted by the radiation source; and a proportional reflection device configured to transmit infrared radiation emitted by the radiation source with wavelengths only in the first wavelength range onto the receptacle and configured to reflect infrared radiation with wavelengths in the second wavelength range back onto the radiation source, the proportional reflection device being configured to reflect a majority of the infrared radiation not being transmitted, wherein the first wavelength range is between 1700 nm and 2100 nm, and wherein the first wavelength range and the second wavelength range are different from each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 15, 16)
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12. Apparatus for heating plastic receptacles comprising:
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at least one heating device configured to heat plastic receptacles, the heating device including a radiation source configured to direct radiation at one of the plastic receptacles, wherein the radiation source emits infrared radiation in a first wavelength range and in a second wavelength range, and at least one first reflector element configured to reflect radiation emitted by the radiation source toward the one of the plastic receptacles; and a proportional reflection device configured to transmit infrared radiation emitted by the radiation source with wavelengths only in the first wavelength range onto the one of the plastic receptacles and configured to reflect infrared radiation with wavelengths in the second wavelength range back onto the radiation source, the proportional reflection device being configured to reflect a majority of the infrared radiation not being transmitted, wherein the first wavelength range is between 1700 nm and 2100 nm, and wherein the first wavelength range and the second wavelength range are different from each other. - View Dependent Claims (13, 14)
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17. Apparatus for heating plastic receptacles comprising:
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a transport device configured to transport the plastic receptacles along a predetermined transport path; at least one heating device for heating the plastic receptacles, the heating device including a radiation source configured to direct radiation at the plastic receptacles, wherein the radiation source emits infrared radiation in a first wavelength range and in a second wavelength range, and at least one first reflector element configured to reflect radiation emitted by the radiation source; and a proportional reflection device configured to transmit infrared radiation emitted by the radiation source with wavelengths only in the first wavelength range and configured to reflect infrared radiation with wavelengths in the second wavelength range back onto the radiation source, the first predetermined range being selected so as to include wavelengths that are only partly transmitted by the plastic receptacles, and the second predetermined wavelength range being selected so as to include at least one of wavelengths to which the plastic receptacles are substantially impermeable and wavelengths to which the plastic receptacles are virtually transparent, wherein the first predetermined wavelength range is between 1700 nm and 2100 nm, and wherein the first wavelength range and the second wavelength range are different from each other. - View Dependent Claims (18)
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Specification