Aspects of the present invention relates to a method for producing a substrate sheet for a decorative floor or wall covering (10), a method for producing a decorative floor or wall covering and a decorative floor or wall covering (10). The method for producing a substrate sheet comprises providing a first thermoplastic composition comprising recycled PVC granules (S2), the first thermoplastic composition (S2) having a shade. In addition the method comprises admixing a darkener to the first thermoplastic composition so as to obtain a first thermoplastic composition having a specific shade (S6). A second thermoplastic composition (S4) is also provided. The method further comprises coextruding (S8) the first thermoplastic composition (S2) having a specific shade with the second composition (S4) so as to form a first and a second adjacent coextruded layers. The first coextruded layer is a support layer having the specific shade, the first coextruded layer comprising the first thermoplastic composition (S2). The second coextruded layer is a digitally printable layer, the second coextruded layer comprising the second thermoplastic composition (S4).

Aspects of the present invention relates to a method for producing a substrate sheet for a decorative floor or wall covering (10), a method for producing a decorative floor or wall covering and a decorative floor or wall covering (10). The method for producing a substrate sheet comprises providing a first thermoplastic composition comprising recycled PVC granules (S2), the first thermoplastic composition (S2) having a shade. In addition the method comprises admixing a darkener to the first thermoplastic composition so as to obtain a first thermoplastic composition having a specific shade (S6). A second thermoplastic composition (S4) is also provided. The method further comprises coextruding (S8) the first thermoplastic composition (S2) having a specific shade with the second composition (S4) so as to form a first and a second adjacent coextruded layers. The first coextruded layer is a support layer having the specific shade, the first coextruded layer comprising the first thermoplastic composition (S2). The second coextruded layer is a digitally printable layer, the second coextruded layer comprising the second thermoplastic composition (S4).

In-situ polymerized polymer film facilitates improved paint film appliques with reduced defects. The paint film appliques comprise the in-situ polymerized polymer film as a carrier layer. The carrier layer is colored and, preferably defect-free.

In-situ polymerized polymer film facilitates improved paint film appliques with reduced defects. The paint film appliques comprise the in-situ polymerized polymer film as a carrier layer. The carrier layer is colored and, preferably defect-free.

A system comprising: (1) a grinding unit configured to receive and grind recycled PET bottles into a group of polymer flakes comprising up to about ten percent colored polymer flakes and balance substantially clear polymer flakes; (2) a washing unit configured to wash the group of polymer flakes; and (3) an extruder configured to extrude material in a plurality of different extrusion streams. The extruder may be further configured to: (1) receive a concentrate-polymer mixture comprising a mixture of the polymer flakes and a color concentrate; (2) melt the concentrate-polymer mixture to produce a polymer melt; (3) reduce a pressure within the extruder; and (4) pass the polymer melt through the extruder so that the polymer melt is divided into the plurality of extrusion streams. The system may then filter the polymer melt through at least one filter and form the polymer melt into bulked continuous carpet filament.

The invention is directed to a method for manufacturing a foil having a variable strip geometry, which makes it possible to supply a foil that bears a complex security feature. The varying of the geometry is effected by means of an adaptation of a melt flow of the extruder.

The invention is directed to a method for manufacturing a foil having a variable strip geometry, which makes it possible to supply a foil that bears a complex security feature. The varying of the geometry is effected by means of an adaptation of a melt flow of the extruder.

One aspect of the present disclosure relates to devices for sealing gaps in an extrusion assembly to provide for a consistent extrusion. In one embodiment, a barrel-shaped sealing device with a resilient protruding edge is used to prevent extrusion material from entering gaps between the piston and the inner surface of the barrel. The sealing device includes a fastener to releasably attach the sealing device to the piston. Sealing rings are inserted into a bottom gap formed between the bottom edge of the barrel and the bottom surface of the die.

A control device, method and device for applying at least one material to a substrate or a workpiece, an extruder, a 3D print head, a 3D printer and a machine tool, wherein the device includes a main body with an outlet for the materials, where the materials are fed through at least two access channels to the outlet and mixed and/or blended at this location, where a rotational movement of the main body with respect to the substrate or the workpiece causes the materials to blend in a manner analogous to a double helix or a plait such that mixing/blending of the materials is advantageously improved, and where if applied to a 3D printing process, then either the workpiece rotates about an axis of rotation that extends through the outlet of the main body, or the main body and consequently the outlet itself rotates.

A control device, method and device for applying at least one material to a substrate or a workpiece, an extruder, a 3D print head, a 3D printer and a machine tool, wherein the device includes a main body with an outlet for the materials, where the materials are fed through at least two access channels to the outlet and mixed and/or blended at this location, where a rotational movement of the main body with respect to the substrate or the workpiece causes the materials to blend in a manner analogous to a double helix or a plait such that mixing/blending of the materials is advantageously improved, and where if applied to a 3D printing process, then either the workpiece rotates about an axis of rotation that extends through the outlet of the main body, or the main body and consequently the outlet itself rotates.