B29K2311/10

Production of a thermoplastic injection-molding-material granulate and of an injection-molded component, and a granulate grain

A system for production of a thermoplastic injection molding material granulate has at least one production unit for the production of a fiber reinforced plastic granulate from a thermoplastic granulate and natural fibers. to the system has at least one heat-treatment unit for the treatment of the fiber-reinforced plastic granulate providing heat such that an outer layer of each heated granulate grain of the fiber-reinforced plastic granulate is at least partially converted to a liquid physical state. The system has at least one applicator unit for applying a chemical foaming agent powder to at least some portions of each heated granulate grain, where the heat treatment unit is equipped to carry out the heat treatment such that a temperature of the molten outer layer of the respective granulate grain is below a reaction temperature of the foaming agent.

Resin molding and method for producing the same

To provide a resin molding and a method for producing the same. A resin molding includes a plate-like substrate including reinforcing fibers and a first thermoplastic resin binding the reinforcing fibers to each other, and an extension part that is constituted of an injection-molded member and is extended from an end surface of the substrate along the plate face direction of the substrate. It is preferred that the reinforcing fibers be plant fibers, such as kenaf. It is preferred that the substrate and the extension part be connected flush to each other on, of the one surface and the other surface of the connection part of the substrate and the extension part, at least the side of one surface. Moreover, the extension part may further be provided with a plate-like part that constitutes an outer edge part of the resin molding and forms a shape involute toward the other surface. The method for producing a resin molding includes a shaping step of shaping the substrate and an extension part formation step of forming the extension part by injection-molding.

METAL-RESIN COMPOSITE AND METHOD FOR PRODUCING SAME

There is provided a method for producing a metal-resin composite which includes a resin member and a metal member having a roughened surface in at least a portion of the surface thereof, the resin member being joined so as to be in contact with at least a portion of the roughened surface. The method includes a step of joining the resin member and the metal member by melting the resin member with the frictional heat generated in the surface of the metal member on its side opposite to the resin member in a state where the metal member and the resin member are superposed. The method includes making adjustment so that when the roughened surface is measured at arbitrary five points by using a confocal microscope according to ISO 25178, the developed area ratio (Sdr) is 5 or more in terms of number-average value.

METAL-RESIN COMPOSITE AND METHOD FOR PRODUCING SAME

There is provided a method for producing a metal-resin composite which includes a resin member and a metal member having a roughened surface in at least a portion of the surface thereof, the resin member being joined so as to be in contact with at least a portion of the roughened surface. The method includes a step of joining the resin member and the metal member by melting the resin member with the frictional heat generated in the surface of the metal member on its side opposite to the resin member in a state where the metal member and the resin member are superposed. The method includes making adjustment so that when the roughened surface is measured at arbitrary five points by using a confocal microscope according to ISO 25178, the developed area ratio (Sdr) is 5 or more in terms of number-average value.

Method and device for producing a ribbon and a thread of bamboo fiber

The present invention relates to a method of producing a ribbon comprising bamboo fibers. The method comprises positioning the fibers on a conveyor and conveying the fibers in a transport direction, interconnecting the fibers by covering the fibers with thread and/or particles of a sticky material with at least one web forming device which is positioned above and/or below the conveyor and which ejects thread and/or particles. The formed thread and/or particles attaches to the fibers and forms a web which interconnects the fibers in order to form the ribbon and/or stitching the fibres together with at least one stitching device which is configured to stitch the individual fibers together in order to form the ribbon.

System and method for increasing density of structural composites
11806944 · 2023-11-07 ·

In one embodiment, a method for making a high density structural composite includes depositing a plurality of fibrous materials on or adjacent a first plate or surface. A polymer liquid is deposited onto the plurality of fibrous materials to form a composite mixture. A first cyclic pressure is applied onto the composite mixture to compress the composite mixture. In some embodiments, the cyclic pressure may then be reduced to a valley pressure to complete a pressurization cycle. In some instances, the valley pressure may be below atmospheric pressure to induce trapped air and volatile gases to escape from the composite mixture before curing. The pressurization cycle may be repeated. A second pressure, which may be a constant pressure in some embodiments, may be applied to the composite mixture using, in some embodiments, a second plate until the polymer liquid has at least partially cured or partially solidified.

COMPOSITE REINFORCING STRIP
20230364882 · 2023-11-16 ·

Composite reinforcing strip comprising: a covering capsule surrounding a plurality of longitudinal channels developing parallel to a longitudinal development direction of the composite reinforcing strip and arranged in sequence between opposite lateral ends of said composite reinforcing strip, a plurality of longitudinal reinforcing fibres arranged inside reinforcing channels of the plurality of longitudinal channels, and a plurality of longitudinal permeable fibres arranged inside at least one permeable channel of the plurality of longitudinal channels.

The covering capsule has, at least at an upper surface of the covering capsule opposite to a lower surface of the covering capsule, a plurality of surface openings leading to the at least one permeable channel so as to define a fluid communication between the plurality of longitudinal permeable fibres and an external environment.

SUPERIMPOSED CUSHIONING ELEMENTS

A cushioning element includes a fabric, a first cushioning element on a first side of the fabric, and a second cushioning element on a second side of the fabric. The first cushioning element and second cushioning element may be superimposed. The fabric may include a first layer and a second layer that are superimposed, with the first cushioning element secured to and protruding from the first layer and the second cushioning element secured to and protruding from the second layer. Each of the first cushioning element and second cushioning element may include a plurality of interconnected walls formed from an elastomeric gel material. The walls of the first cushioning element and second cushioning element may be aligned or offset.

METHODS FOR FORMING CUSHIONING ELEMENTS ON FABRIC

A method for forming a cushioning element comprises molding a first cushioning element on a first side of a fabric and molding a second cushioning element on a second side of the fabric. The first cushioning element and second cushioning element may be superimposed. The fabric may include a first layer and a second layer that are superimposed, with the first cushioning element secured to and protruding from the first layer and the second cushioning element secured to and protruding from the second layer. Each of the first cushioning element and second cushioning element may include a plurality of interconnected walls formed from an elastomeric gel material. The walls of the first cushioning element and second cushioning element may be aligned or offset.

METHOD FOR MANUFACTURING A CELLULOSE PRODUCT, CELLULOSE PRODUCT FORMING APPARATUS AND CELLULOSE PRODUCT
20230373136 · 2023-11-23 ·

A method for manufacturing a cellulose product, comprising the steps: dry forming a cellulose blank in a dry forming unit; arranging the cellulose blank in a forming mould; heating the cellulose blank to a forming temperature in the range of 100° C. to 200° C.; and pressing the cellulose blank in the forming mould with a forming pressure of at least 1 MPa.