摘要:
The invention relates to a method for arranging particles at an interface between a soluble matrix and a matrix comprising a viscous material and particles. The method comprises the steps of: - contacting the soluble matrix and/or the matrix comprising a viscous material and particles with a support comprising at least one side, said at least one side of the support facing the soluble matrix and/or the matrix comprising a viscous material and particles, - placing the soluble matrix in contact with the matrix comprising a viscous material and particles thereby providing a structure comprising at least one interface between said soluble matrix and said matrix comprising a viscous material and particles, - subjecting the particles in said structure to an electric field and/or a magnetic field thereby forming the particles into at least one pathway of particles, said at least one pathway of particles comprising a termination at the at least one interface between the soluble matrix and the matrix comprising a viscous material and particles, and - fixating the viscous material so as to fixate the at least one pathway of particles, characterized in that said termination is exposable upon removal of the soluble matrix. The invention also relates to articles obtainable by said method, and to the use of said method in various applications.
摘要:
Padding element (1) for seats such as sofas, armchairs, chairs and armrests, wherein such seats have a support structure (30), or similar supporting structure for the human body or parts thereof, such as rest or anti-fatigue mats, anti-decubitus mattresses, shower mats, anti-impact mats, wherein the padding element (1) is provided with a support surface (2) for a user, wherein the padding element (1) comprises a film or covering (4), one gel layer (5) adhering to part of the film or covering (4) and a compact elastomeric layer (6) having a surface (7) for contact with the gel layer (5) and with at least part of the film or covering and a surface (8) for contact with the seat and/or with the support structure (30) of the seat, wherein the compact elastomeric layer (6) adheres to the gel layer (5) and the film or covering (4); method for obtaining such padding element (1).
摘要:
L'invention a pour objet un moule (40) pour le rotomoulage d'une pièce en matière plastique, comprenant une pluralité de parois (44A-44D) délimitant une chambre de moulage. Au moins une paroi du moule comporte un orifice (50A,50B) apte à évacuer vers l'extérieur un fluide situé dans la chambre de moulage, le moule comportant également un conduit flexible (54A,54B) situé au moins partiellement dans la chambre de moulage, en communication de fluide avec l'orifice. Le conduit comprenant une extrémité liée à la paroi du moule et une extrémité libre.
摘要:
A method of fabricating a preformed core material by utilizing a particulate preform process. The particulate core material is combined with an adhesive binder and deposited upon a porous surface (6), through which air is drawn, having the desired preform shape. Once the adhesive sets the deposited layer of core material is removed from the porous surface (6) and may be used as a core in a closed molding process. This method may also be used to fabricate a preformed laminate by depositing layers of fiber material before and/or after a core material is deposited.
摘要:
Dispositif de rotomoulage comprenant une première tourelle 11 porte-moules, et une deuxième tourelle 12 supportant des bacs à poudre plastique. Au poste de poudrage 13, un bac à poudre de la deuxième tourelle 12 est accouplé à un cadre 22 de réception du moule de la première tourelle 11, et l'ensemble est entraîné en rotation autour d'un axe longitudinal 23, de manière à répartir la poudre dans le moule préalablement chauffé. Un palier 24 escamotable est monté à pivotement entre une position inactive, et une position active dans laquelle il coopère avec un embout 27 du cadre 22 pour le redresser indépendamment de la flèche due au montage en porte-à-faux. Des moyens de percussion 35 sont aptes à transmettre une multitude de chocs mécaniques sur le cadre 22 du moule pendant la rotation avec le bac à poudre, et en position active du palier 24. Application : moulage de pièces plastiques à parois minces.
摘要:
A variety of hollow structures with unique morphologies were manufactured with a rotational spinning technique. Phase separation of soluble solutions was induced within a filled mold as it was being rotated about one of its axis. As phase-separation occurs within this rotating mold, the increase in density of one phase results in sediment at the periphery under centrifugal forces. After or during sedimentation, gelation of the phase-separated particles fixes the tube morphology and the solvent remains in the center of the mold. The solvent is removed from the mold resulting in a tube. By controlling the rotational speed and the formulation chemistry, the tube dimensions and wall morphology can be manipulated. This technique offers a new approach to the manufacture of polymeric tubes. It requires small quantities of starting material, permits multi- layering of tubes, is applicable to diverse polymers and can result in highly diffusive hollow structures while maintaining good mechanical strength.
摘要:
A system and method for molding the shell of a medical device or other molded article is disclosed. The system includes a multi-axis rotational molding machine (50) in which a mold (100) is mounted. The mold (100) has a cavity (60) in the shape of the article to be molded. The mold (100) seals to hold a vacuum. In operation, silicone or other molding material is inserted into the mold (100), vacuum is applied to the mold (100), the mold (100) is rotated about at least two axes (A, B) and a molding material coats the inside walls of the mold (100) to form the shell or other desired article. A rotationally molded medical article is also disclosed.
摘要:
A method of the manufacture of an optical lens element. The method comprises providing a fixable liquid (A) separated from a different liquid (B) by a meniscus (12); varying a curvature of the separating meniscus (12) and fixing the shape of the fixable liquid when the curvature has a desired configuration.