摘要:
Methods for the recycling of carpet are disclosed that produce clean face fiber suitable for industrial use. The methods allow the recovery of face fiber material, for example a polyester or a polyamide, from carpets that includes a face fiber material and a backing material, and include the steps of heating the carpet to a temperature lower than the melting point of the face fiber material, but higher than the initial thermal decomposition temperature of the backing material, for a time and at a temperature sufficient to thermally decompose, pyrolyze, or oxidize at least a portion of the backing material, rendering the backing material friable, that is more friable than the untreated backing; and applying mechanical force to the carpet so as to liberate the friable backing material from the face fiber material.
摘要:
Backings for carpet and carpet tiles are formed from various post-consumer and/or post-industrial polymeric waste materials, for example, post-consumer textile waste material (e.g., carpet and carpet tiles), post-industrial textile waste material (e.g., carpet and/or carpet tiles), and/or other post-consumer and/or post-industrial polymeric materials.
摘要:
A method for creating a material sheet with fibers includes the steps of feeding a layer of loose fibers to a conveyor; applying adhesive to the loose fibers, the adhesive being capable of mechanically bonding to the loose fibers; conveying the loose fibers and adhesive to a mold; and allowing the adhesive applied to the loose fibers to expand while containing the adhesive applied with the loose fibers in the mold in a manner to cause the adhesive to permeate throughout the fibers and to harden in a desired thickness.
摘要:
An extruded composite utilized as a building material includes a base polymer, unseparated processed recycled carpet waste, and a filler material, which may be a wood filler or other natural fiber. Carpet waste may be separated into components that may be utilized in a variety of plastics applications, including extruded composites utilized as building materials. Separation may include shaving face fiber from bound fiber secured in a backing fiber and/or may include separating fiber pile and backing fibers from carpet adhesive to remove inorganic materials such as calcium carbonate.
摘要:
An extruded composite utilized as a building material includes a base polymer, unseparated processed recycled carpet waste, and a filler material, which may be a wood filler or other natural fiber. The recycled carpet waste may be used to decrease the amount of both base polymer and wood filler to achieve an equivalent product at lower cost. The extruded composite may also utilize chemical foaming agents to reduce density. Both foamed and non- foamed composites may be capstocked.
摘要:
A device for applying a polyurethane mixture to a backstitch side of a greige includes: a tensioning roller rotatable in a first direction; an application roller arranged adjacent to the application roller and rotatable in a second direction opposite to the first direction, the tensioning roller and the application roller positioned transversely and adjacent to a path of travel of the greige on the backstitch side of the greige, the tensioning roller rotatable against a feed direction of the greige, the application roller rotatable in the feed direction of the greige; and a dispenser configured to create a puddle of the polyurethane mixture between the tensioning roller and the application roller.
摘要:
The amount of waste carpeting that is land filled or other wise disposed of is significantly reduced, as is the need for the mining mineral fillers, by utilizing specially processed waste carpeting as a filler in the production of new hot melt carpet back coating (31), roofing materials or other similar products (28). Waste carpeting (20) (post-consumer and/or waste from new carpet manufacture) is collected and size-reduced (22), typically in a first coarse size-reduction (22) and then after densification (23) to a finer size-reduction (24). The size-reduced waste carpeting is added as filler (25 or 30) to at least one other material, such as polymers in standard latex, EVA, or PVC carpet back coatings, to provide a hot melt composted used in the manufacture of a useful product and the composite material is used to make the useful produce (such as carpet back coating which is used as a primary (26) or secondary (27) back coating in the manufacture of new carpeting (28)).
摘要:
Bei einem Verfahren zur kontinuierlichen Phasenumwandlung eines Produktes in einem Mischkneter, in welchen das Produkt eingetragen wird, mit Knetelementen an zumindest einer Welle, soll eine Rückmischung des Produkts solange erfolgen, bis über eine Messung des Drehmoments der Welle eine vorbestimmte Viskosität des Produkts ermittelt wird, oder eine Rückmischung eines Produktes mit einer bereits erreichten vorbestimmten Viskosität erfolgt, worauf der Mischkneter in einen kontinuierlichen Betrieb umgeschaltet wird, in welchem ggf. Noch eine Zugabe von einer weiteren Komponente erfolgt und das Produkt zum Austrag gefördert wird.
摘要:
Multistep recycling processes for preparing recycled plastic materials. The processes feature a sequence of operations selected from the group consisting of preprocessing operations, size reduction operations, gravity concentration operations, color sorting, sorting by thickness, friction, or differential terminal velocity or drag in air, surface to mass control operations, separation processes enhanced by narrow surface to mass distributions, blending operations, and extrusion and compounding operations. Plastic-rich mixtures are subjected to the process, and one or more recycled plastic materials are collected as outputs of the sequence of processes.