Heat laminating a cover foil to a base foil

Details Heat laminating a cover foil to a base foil Heat laminating a cover foil to a base foil

2007-08-07

2007-08-07

Fuqua, Shawntina (Department: 3742)

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

C219S470000, C219S528000, C219S216000, C399S328000, C399S338000, C399S285000, C118S060000, C432S060000, C432S228000

Reexamination Certificate

active

11218989

ABSTRACT:
A base sheet is spanned over a lower roller, and an upper roller pulls a cover sheet along a path and presses it against the base sheet at the lower roller. A preheater housing along the path upstream of the rollers is formed with a chamber open toward the path. A radiant heater in the chamber is directed transversely at the path so as to heat the cover sheet passing along the path. A sensor along the path adjacent the chamber detects atmosphere around the chamber and generates an output when the detected atmosphere indicates an unsafe hot condition of the cover sheet. A shutter can shift between a retracted position offset from the chamber and an advanced position closing the chamber. A controller connected to the sensor shifts the shutter from the retracted position to the advanced position when the output is generated by the sensor.

REFERENCES:
patent: 198 50 143 (2000-05-01), None

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