B29K75/00

Soundproof member and production method thereof
11970120 · 2024-04-30 · ·

In a soundproof member 10 including a polyurethane foam 11 and disposed apart from an engine E on a vehicle interior side of a dash panel 50 partitioning a space into an engine room having the engine E as a sound source and a vehicle interior, the polyurethane foam 11 has a surface layer 12 on at least a part of the surface thereof, a one side surface of the polyurethane foam 11 directly facing the vehicle interior side of the dash panel 50 has at least a surface layer 12A in an open cell state or a core, and a surface layer 12B of the other side surface opposite to the one side surface is a surface layer in a closed cell state.

Mechanical reticulation of polymeric-based closed cell foams

Polymeric based closed cell foams, such as shape memory polymer foams, contain bubbles. Making these bubbles continuous is called reticulation. Disclosed are embodiments of a device and method to controllably reticulate polymer-based closed cell foams by puncturing the membranes of these polymer-based closed cell foams.

Three-dimensional printing

An example three-dimensional (3D) printing kit includes a particulate build material, which includes from about 80 wt % to 100 wt % metal particles based on a total weight of the particulate build material. In some examples, the kit also includes a binder fluid, which includes water and a curable polyurethane adhesion promoter in an amount ranging from about 0.5 wt % to about 15 wt % based on a total weight of the binder fluid. The curable polyurethane adhesion promoter is formed from a polyisocyanate; an acrylate or methacrylate, the acrylate or methacrylate having at least one hydroxyl functional group and having an acrylate functional group or a methacrylate functional group; a carboxylic acid including one or two hydroxyl functional groups, an amount of the carboxylic acid ranging from 0 wt % to about 10 wt %; and a sulfonate or sulfonic acid having one or two hydroxyl functional groups or one or two amino functional groups.

Foamed thermoplastic polyurethane and microwave molded body thereof

The present invention relates to a foamable composition used to prepare foamed thermoplastic polyurethane and a microwave molded body thereof. The foamable composition includes unfoamed thermoplastic polyurethane particles, a thickener or a bridging agent, and a foaming agent, wherein the unfoamed thermoplastic polyurethane particles have a viscosity of 1,000 poise to 9,000 poise measured at 170? C. according to JISK 7311 test method.

Method for forming a body comprising at least one through-going passage

A method is described for forming a body having at least one through-going passage, said method has the steps of: a) providing a mixture comprising particles and at least one liquid pocket inside a curable matrix, b) subjecting said mixture to a first alternating voltage having a first frequency to form a body in which said at least one liquid pocket extends from a first surface of said body to a second surface of said body thereby forming at least one through-going passage lacking curable matrix, and c) curing said curable matrix into a cured matrix, wherein at least some of said particles are located at an interface between said at least one through-going passage comprising liquid and said cured matrix.

Recycled thermoplastic polyurethane mixed leather and manufacturing method thereof

The present disclosure relates to an innovative leather and a manufacturing method thereof. The innovative leather includes a TPU substrate, a TPU adhering layer, and a TPU surface layer. The TPU adhering layer is disposed on the TPU substrate. The TPU surface layer is disposed on the TPU adhering layer. All materials of the innovative leather of the present disclosure are the same TPU materials, thus the innovative leather of the present disclosure can be recycled after the innovative leather of the present disclosure is used. The innovative leather of the present disclosure has recycling benefit.

SOUNDPROOF MEMBER AND PRODUCTION METHOD THEREOF
20240149801 · 2024-05-09 · ·

In a soundproof member 10 including a polyurethane foam 11 and disposed apart from an engine E on a vehicle interior side of a dash panel 50 partitioning a space into an engine room having the engine E as a sound source and a vehicle interior, the polyurethane foam 11 has a surface layer 12 on at least a part of the surface thereof, a one side surface of the polyurethane foam 11 directly facing the vehicle interior side of the dash panel 50 has at least a surface layer 12A in an open cell state or a core, and a surface layer 12B of the other side surface opposite to the one side surface is a surface layer in a closed cell state.

Multi-layered films for use in airbags and footwear

Airsoles or bladders for articles of footwear comprising multi-layered films are provided herein. In one aspect, the airsoles or bladders comprise a first sheet and a second sheet, wherein a first side of the first sheet faces a second side of the second sheet, wherein the first sheet and the second sheet are bonded together to form an internal cavity in a space between the first side of the first sheet and the second side of the second sheet, forming a bladder capable of retaining a gas in the internal cavity at a pressure above atmospheric pressure, at atmospheric pressure, or below atmospheric pressure; and wherein each of the first sheet and the second sheet comprise a multi-layered film comprising: a core region comprising at least 20 gas barrier layers and a plurality of elastomeric layers, wherein the gas-barrier layers alternate with the elastomeric layers.

Adaptive closed-loop control of additive manufacturing for producing a workpiece

A method and an arrangement for producing a workpiece using additive manufacturing techniques involve pre-process, in-process and post-process measurement in order to determine individual characteristics of one or more workpiece layers. In particular, dimensional and/or geometrical characteristics of a workpiece layer are measured before the next workpiece layer is produced. Advantageously, production parameters are controlled in response to individual material characteristics determined prior to the production process. Also advantageously, measurement results are fed back into a production process in order to increase accuracy, reliability, repeatability and precision of the production process.

Door for home appliance, home appliance, and method for manufacturing the same

A door for a home appliance, a home appliance, and a method for manufacturing the same, are disclosed. The door for a home appliance comprises a panel assembly; and a frame assembly defining a predetermined space having an opening connected with an edge of the panel assembly, and making a foaming space for receiving a thermal insulator by means of the predetermined space of the frame assembly and the edge of the panel assembly, wherein a foaming injection hole through which the thermal insulator is injected is provided on at least one of ends of an upper surface, a lower surface, a left side and a right side of the frame assembly.