B27N1/029

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.

Wood material panel pressing device and method for monitoring a wood material panel pressing device
11400676 · 2022-08-02 · ·

The disclosure relates to a wood material panel pressing device for pressing a fibrous press cake in order to produce a wood material panel including an inspection device that is designed to emit a signal in the event of a disruption. According to the disclosure, the wood material panel pressing device for pressing a fibrous press cake for producing an HDF panel or an MDF panel includes: an inspection device, which is designed to emit a signal in an event of a disruption, wherein: the inspection device has a camera and an evaluation unit, the camera is arranged in an intake region of the wood material panel pressing device; and the evaluation unit automatically emits a signal in an event of a blow-out of press cake particles.

Extrusion additive manufacturing for veneer applications

A method of extrusion additive manufacturing for veneer applications may include, but is not limited to, loading material into an extruder, generating a mixture from the material, and fabricating the veneer product. Fabricating the veneer product may include depositing a first portion of the mixture on a working surface of the extruder, actuating the working surface, and depositing an additional portion of the mixture on the working surface of the extruder proximate to the first position of the mixture deposited on the working surface. Where the first portion of the mixture and the additional portion of the mixture form a first layer of the veneer product, fabricating the veneer product may include actuating a nozzle of the extruder and depositing an additional layer of the mixture on the first layer of the veneer product. The material may include wood product and a binder.

METHOD AND DEVICE FOR PRODUCING A COMPOSITE WOOD BOARD
20210268685 · 2021-09-02 ·

The method relates to a method for producing a wood material panel. The method includes the following steps: (a) scattering a multitude of wood particles to produce a particulate cake, (b) applying an adhesive to at least some of the wood particles during the scattering and/or prior to the scattering, and (c) pressing of the particulate cake under high pressure and at a high temperature, wherein a quantity of adhesive that is applied to the wood particles is varied depending on its anticipated position in the particulate cake.

SYSTEM AND METHOD FOR INCREASING DENSITY OF STRUCTURAL COMPOSITES
20210252804 · 2021-08-19 ·

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.

Wood material panel hot press and method for operating a wood material panel hot press
11097502 · 2021-08-24 · ·

The disclosure relates to a wood material panel hot press for producing a wood material panel, wherein the wood material panel hot press has an inlet side and an outlet side, and is designed to press a blank supplied on the inlet side in order to form a wood material panel. According to the invention, a temperature measurement device is provided which is designed to automatically measure the temperature (T) of the wood material panel on the outlet side in a spatially resolved manner.

PROCESS FOR PREPARING A BONDING RESIN
20210238424 · 2021-08-05 · ·

The present invention relates to a process for preparing a bonding resin, wherein a resin prepared from lignin, phenol and formaldehyde is mixed with a resin prepared from phenol and formaldehyde to achieve a mixture useful as a bonding resin useful in the manufacture of laminates, mineral wool insulation and wood products such as plywood, laminated veneer lumber (LVL), medium density fiberboards (MDF) and particle boards.

THERMOPLASTIC ELASTOMER CORK COMPOSITE
20210221963 · 2021-07-22 ·

A method of fabricating a cork composite material and a cork composite material. The method may comprise providing a plurality of cork particles in a volume and adding a dispersion of thermoplastic elastomer to the volume to provide a mixture of the dispersion of thermoplastic elastomer and the cork particles. The method may comprise agitating the cork particles and/or the mixture of the dispersion of thermoplastic elastomer and the cork particles and heating the mixture of the thermoplastic elastomer and the cork particles. The method may comprise allowing the mixture of the thermoplastic elastomer and the cork particles to cool. The steps of the method together may result in a plurality of coated cork particles being coated in a first layer of the thermoplastic elastomer.

CONTROLLED TEMPERATURE PRE-TREATMENT APPLICATION OF ADHESIVE RESIN IN ENGINEERED WOOD PRODUCTS

A method for applying an adhesive resin in manufacturing an engineered wood product includes pre-heating an adhesive resin to a pre-application temperature before entry into an adhesive applier, maintaining the adhesive resin at the pre-application temperature for a controlled period of time to achieve improved pre-application chemical properties, and applying the adhesive resin on wood particles to form an engineered wood product.

IMPROVED USE OF MDI IN ENGINEERED WOOD PRODUCTS

A method for forming an engineered wood product includes grinding an MDI (methylene diphenyl di-isocyanate) binder together with water in a grinder to form a ground MDI dispersion. The ground MDI dispersion is fed into a wood production machine in which are lignocellulosic materials. The lignocellulosic materials are bound together by the ground MDI dispersion to form an engineered wood product.