Elongated component for a manufacturing machine of a fibrous cellulosic web, its use and method for recycling
AssigneeValmet Technologies Oy
InventorsPasi Viitasalo, Mikko Kaasalainen
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Abstract
An elongated planar or profiled component for a manufacturing machine of a fibrous cellulosic web, such as paper, board or tissue web, is at least partially formed from a composite material having a continuous polymer matrix, and reinforcing inorganic fibers embedded in the continuous polymer matrix. The continuous polymer matrix is biodegradable and the reinforcing inorganic fibers are biodegradable glass fibers. A method is disclosed for recycling elongated planar and/or profiled components used for manufacture of a fibrous web.
Claims10
A doctor blade for a fibrous cellulose web manufacturing machine, the doctor blade extending in a cross-machine direction and a machine direction and having a doctor blade thickness, the doctor blade comprising:
- a continuous polymer matrix comprised of at least one of polylactic acid;
- polycaprolactone;
- a polyhydroxyalkanoate, polyhydroxybutyrate;
- poly(alkylene succinate), and poly(butylene succinate);
- and
- reinforcing inorganic biodegradable glass fibers embedded in the continuous polymer matrix;
- wherein the doctor blade thickness is in a range of 1-4 mm.
A method of manufacture of a fibrous cellulosic web, comprising:
- on a web manufacturing machine employing at least one doctor blade which extends in a cross-machine direction and a machine direction and having a doctor blade thickness in a range of 1-4 mm;
- and
- wherein the at least one doctor blade has a biodegradable continuous polymer matrix comprised of at least one of polylactic acid;
- polycaprolactone;
- a polyhydroxyalkanoate, polyhydroxybutyrate;
- poly(alkylene succinate), and poly(butylene succinate), and wherein reinforcing inorganic fibers of biodegradable glass fibers are embedded in the continuous polymer matrix.
Dependencies are inferred from the claim text.