Filter material take-up product for air filter
AssigneeHokuetsu Paper Mills, Ltd.
InventorsToshihiko Soyama, Masashi Sato
Life of this patent
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Abstract
A filter material take-up product and a paper winding core, which are free from secondary-contamination by an outgas while being transported or stocked. Irrespective of its application such as building air conditioner, an air cleaner or a semi-conductor factory, the amount of the outgas to be generated from the filter take-up product for the air filter can be kept at a negligible level. The filter take-up product for the air filter is produced by coating and wrapping the filter material for the air filter, as wound on the winding core, with a film wrapping material which is so made of phenolic compounds, carboxylate esters, phosphate ester or cyclic siloxance as to have an outgas generation in an amount of 100 ng/g or less by the dynamic head space method.
Claims3
A filter material take-up product for an air filter, comprising a filter material which is wound on a winding core, the winding core and a plastic film wrapping material, characterized in that at least one of said winding core and the plastic film wrapping material have an outgas generation amount, when treated by a dynamic head-space method, of 100 ng/g or less of phenolic compounds, carboxylate esters, phosphate esters, having a molecular weight of 150 or more, and cyclic siloxanes having 10 or less silicon atoms, respectively, and also, outgas generating amount is not regulated except aforesaid outgas.
Dependencies are inferred from the claim text.