Baking and cooking tray sheet and its manufacturing method

Details Baking and cooking tray sheet and its manufacturing method Baking and cooking tray sheet and its manufacturing method

1982-06-07

1984-07-31

Lesmes, George F.

Coating processes

Application to opposite sides of sheet, web, or strip

229 25R, 426113, 426127, 426128, 426389, 426523, 426811, 427387, 427391, 427392, 427395, 427396, 427411, B05D 302

Patent

active

044630298

ABSTRACT:
A baking and cooking tray sheet comprises a base stock of neutral paper or cardboard weighing 150 to 500 g/m.sup.2 on the dry basis , and a barrier layer provided thereon and composed mainly of a polyvinyl alcohol and/or starch and a water-resisting agent. A coating layer of silicone resin is further applied on the barrier layer. The tray sheet should have a water vapor permeability of greater than 100 g/m.sup.2 for 24 hours and an air permeability of greater than 5,000 seconds. The tray sheet is prepared by the steps of coating one or both sides of the base stock with a coating liquid composed mainly of a polyvinyl alcohol and/or starch and a water-resisting agnet, followed by drying, and of applying one side of the resultant sheet with a coating liquid of silicone resin, followed by drying.

REFERENCES:
patent: 3230289 (1966-01-01), Eder et al.
patent: 4066817 (1978-01-01), Rossi

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