Method for producing a cellulose paper material from used textiles
AssigneeLenzing Aktiengesellschaft
InventorsRichard Herchl, Christian Weilach
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Abstract
A method for manufacturing a cellulosic paper material (150) is described. The method comprises: i) providing (105) used textiles as starting material (101), wherein the used textiles comprise cellulose and non-cellulosic foreign matters (in particular synthetic plastics and/or metal oxides), ii) at least partially depleting (120) the non-cellulosic foreign matters from the cellulose, to provide a depleted starting material (110), and iii) forming (170) the cellulosic paper material (150) from the depleted starting material (110). Furthermore, a cellulosic paper material (150) made of recycled used textiles and a use of used textiles for providing a cellulosic paper material (150) are described.
Claims18
A method for manufacturing a cellulosic paper material, wherein the method comprises:
- providing used textiles as a starting material, wherein the used textiles comprise at least one of residues from a clothing manufacture or used clothes,
- wherein the used textiles comprise cellulose and non-cellulosic foreign matters;
- wherein the non-cellulosic foreign matters comprise at least one of synthetic plastic or metal oxide;
- partially depleting the non-cellulosic foreign matters from the cellulose, to provide a depleted starting material;
- forming the cellulosic paper material from the partially depleted starting material;
- and
- further comprising at least one of the following features:
- wherein the partially depleting the non-cellulosic foreign matters from the cellulose is such that intrinsic foreign matters at least partially remain in the depleted starting material;
- or
- substantially completely depleting the non-cellulosic foreign matters from the cellulose such that highly pure cellulose fibers are provided as depleted starting material.
A method for manufacturing a cellulosic paper material, wherein the method comprises:
- providing used textiles as a starting material, wherein the used textiles comprise at least one of residues from a clothing manufacture or used clothes,
- wherein the used textiles comprise cellulose and non-cellulosic foreign matters;
- wherein the non-cellulosic foreign matters comprise synthetic plastic;
- partially depleting the non-cellulosic foreign matters from the cellulose, to provide a depleted starting material;
- mixing the depleted starting material with a further starting material of a different composition comprising different plastics for obtaining a mixed starting material such that a desired amount of the different plastics results;
- forming the cellulosic paper material from the partially depleted starting material;
- and
- further comprising at least one of the following features:
- wherein the partially depleting the non-cellulosic foreign matters from the cellulose is such that intrinsic foreign matters at least partially remain in the depleted starting material;
- or
- substantially completely depleting the non-cellulosic foreign matters from the cellulose such that highly pure cellulose fibers are provided as depleted starting material.
A method for manufacturing a cellulosic paper material, wherein the method comprises:
- providing used textiles as a starting material, wherein the used textiles comprise at least one of residues from a clothing manufacture or used clothes,
- wherein the used textiles comprise cellulose and non-cellulosic foreign matters;
- wherein the non-cellulosic foreign matters comprise metal oxide;
- wherein the metal oxides are titanium dioxide and/or pigments;
- partially depleting the non-cellulosic foreign matters from the cellulose, to provide a depleted starting material;
- forming the cellulosic paper material from the partially depleted starting material;
- and
- further comprising at least one of the following features:
- wherein the partially depleting the non-cellulosic foreign matters from the cellulose is such that intrinsic foreign matters at least partially remain in the depleted starting material;
- or
- substantially completely depleting the non-cellulosic foreign matters from the cellulose such that highly pure cellulose fibers are provided as depleted starting material.
Dependencies are inferred from the claim text.