White Greaseproof Paper
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Grease Proof Paper is an impermeable paper that does not allow fluids to pass through to oil or grease and is normally used in cooking or food packaging. Normally greaseproof paper is produced by refining the paper stock and thus creating a sheet with a very low porosity which means it has a very minute hole and space through which a liquid or air may pass. These sheets are passed between hard pressure rollers to further increase the density, creating a paper called glassine. The glassine is treated with starches, alginates, or carboxymethyl cellulose in a size press to fill pores or treat the paper chemically to make it fat repellent.