B29K2105/26

Method For Treatment Of Waste Material And Reactor System Thereof

The reactor system comprises a reactor vessel with at least one inlet and a first and a second outlet, which reactor vessel is configured for depolymerisation of a condensation polymer and which first and second outlet are configured for removal of a first and a second part of a reaction mixture. The reactor system further comprises a heat exchanger downstream of the first outlet. Herein the second outlet is arranged at a lower position of the reactor vessel than the first outlet. The first outlet is configured for removal of the first part being a dispersion and/or solution comprising said condensation polymer and depolymerisation products thereof in a solvent. Said first part is led to the heat exchanger. The second outlet is configured for removal of the second part including agglomerates. The reactor system is used for depolymerisation of a condensation polymer.

METHOD FOR PRODUCTION OF ARTICLES AND SEMI-FINISHED PRODUCTS MADE OF CELLULOSE ACETATE
20220396009 · 2022-12-15 ·

Method for production of articles and semi-finished products made of cellulose acetate, comprising the steps of recover-mg waste material consisting of cellulose acetate derived from previously made cellulose acetate articles and/or semi-finished products, distributing or positioning a mixture of at least one polymeric material inside a mould, heating and pressing the mixture inside the mould in order to form the articles or semi-finished products. The mixture is formed at least partially by the waste material consisting of cellulose acetate and the articles and/or semi-finished products may be subjected to a cooling and pressing step. The mixture is formed at least partially by fragments of cellulose acetate.

MULTILAYER STRETCH FILM

The present invention provides a multilayer stretch film comprising at least one core layer arranged between two exterior layers, wherein the thickness of the film is in the range of 5-40 μm, and wherein the film comprises a recycled post-consumer waste polyethylene material at a content of from 10 to 90% by weight based on the total weight of the film.

Functionalization of foreign material in lyocell-methods

Method of manufacturing a regenerated cellulosic molded body, wherein the method comprises supplying a starting material which comprises cellulose and at least one foreign matter, transferring at least a part of the starting material with at least a part of the at least one foreign matter into a spinning mass which additionally contains a solvent for solving at least a part of the cellulose of the starting material in the solvent, and extruding the spinning mass to the molded body, and subsequently precipitating in a spinning bath, wherein thereby the molded body is obtained, wherein the molded body comprises cellulose and at least a part of the at least one foreign matter.

Method of reusing a textile material which comprises cellulose

Method of recycling a textile material which comprises cellulose for manufacturing regenerated cellulosic molded bodies, wherein in the method the textile material is comminuted, at least a part of non-fiber-constituents of the comminuted textile material is separated from fiber-constituents of the comminuted textile material, at least a part of non-cellulosic fibers of the fiber-constituents is mechanically separated from cellulosic fibers of the fiber-constituents, at least a further part of the non-cellulosic fibers is chemically separated from the cellulosic fibers, and the molded bodies are generated based on the cellulosic fibers after mechanically separating and chemically separating.

Reusing of lyocell-cellulose for lyocell-methods

Method of manufacturing a cellulose-regenerated-molded body, wherein the method comprises supplying a starting material which is manufactured by a lyocell-method and which comprises cellulose, which is manufactured by solving a cellulose source in a solvent for manufacturing a spinning mass, by extruding the spinning mass and by subsequently precipitating in a spinning bath, solving the starting material which comprises cellulose, in a solvent for manufacturing a spinning mass, and extruding, and subsequently precipitating the spinning mass in a spinning bath, wherein thereby the molded body is obtained.

Process for reclamation of polyester by reactor addition

A method for reclaiming polyester can include: providing a feed of recycled polyester; providing a feed of polyester precursors; depolymerizing the recycled polyester to obtain depolymerized polyester monomers; polymerizing the depolymerized polyester monomers with the polyester precursors to form a reclaimed polyester; and providing the reclaimed polyester as output.

Method of manufacturing a particle foam part
20220371286 · 2022-11-24 ·

The invention concerns a process and a device for producing a particle foam part. The method comprises the steps of feeding foam particles into a mould space of a mould, welding the foam particles in the mould space under application of a predetermined pressure, wherein the foam particles comprise a proportion of at least 10% by weight of recycled, shredded foam particles and the welding of the foam particles takes place by means of electromagnetic waves.

METHOD OF MANUFACTURING MOLDED BODY, THERMO-COMPRESSED MOLDED BODY, AND USE THEREOF
20220371233 · 2022-11-24 · ·

According to an embodiment, there is provided a method of manufacturing a molded body from a waste material including at least one of food waste and seaweed, the method comprising: preparing dry powder made from at least the waste material; and forming a molded body by pressurizing the dry powder in a state in which the dry powder is heated to a predetermined temperature.

RECYCLED POLYETHYLENE TEREPHTHALATE COMPOSITION
20230060016 · 2023-02-23 · ·

A composition for production of injection-molded articles is made of recycled polyethylene terephthalate in an amount of over 90 wt %, a nucleation agent selected from salts of citrate acid, salts of carbonic acid, titanium oxide and mixtures thereof in an amount of 0.2-1 phr, and an impact modifier in the form of an unsaturated organic compound selected from acids, anhydrides, esters and metallic salts of at least one of the following: maleic, acrylic, methacrylic, itaconic, crotonic, alpha-methyl crotonic and cinnamic, in an amount of 2-4 phr. Optical brighteners, heat stabilizers and wax can also be added. The composition has high tensile strength, low shrinkage and high color stability, especially when compared to pure RPET.