摘要:
L'invention concerne un dispositif de moulage d'un article en matière plastique dans lequel l'article est obtenu par la compression d'une dose de matière plastique (3) à l'état fondu entre les deux parties d'un moule, comprenant au moins une alimentation de matière plastique (1), une tige (11) coulissant dans une douille (8) adaptée pour supporter temporairement ladite dose de matière plastique (3) , un moule de tête d'article (6,7), un mandrin (18) coopérant avec ledit moule (6,7), caractérisé par le fait qu'il comprend des moyens de retenue non-élastiques (12-14,23,24) qui sont adaptés pour limiter le déplacement bidirectionnel de la tige (11) dans la douille (8). L'invention concerne également un procédé utilisant le dispositif précité.
摘要:
A method is provided for constructing microstructures that can penetrate skin layers, in which the microelements are formed during a molding process while fluidic jets produce openings in the microelements. The structures used in the molding process are formed by tooling that creates the shapes of the microelements in a material deposition step, and also creates the sizes and shapes of the openings that will be formed by the fluidic jets.
摘要:
The invention relates to a method for the production of a material block containing several samples for testing, in particular, tissue samples. The method comprises firstly producing a material blank, preferably made from paraffin, which contains a number of openings for accommodating the corresponding tissue samples, whereby a material blank is formed with a regular arrangement of openings, by means of a suitably formed cast. Said openings extend from a first main surface of the material blank, in the direction of a second main surface, to a particular depth, preferably completely through. Said openings are finally charged with tissue samples, as cylindrical sample bores, and the above closely linked to the surrounding material of the material blank, by means of a temperature treatment step, preferably a double-melt procedure.
摘要:
A mould (1) for moulding braking bands (20) with ventilation ducts (21) whith the use of composite material and, in particular, of C/SiC ceramic material, comprises two half-moulds (3a, 3b) with respective impression surfaces (8a, 8b) which face one another and lie perpendicular to an axis of symmetry (s) and which, together with outer and inner cylindrical walls (11, 12), define a moulding cavity (4) in the shape of the braking band (20) to be moulded. The mould (1) also has pin elements (15) which have the shape of the ventilation ducts (21) and which can be transferred by secondary actuating means (17) from a rest position to a working position and vice versa, the pin elements (15) being outside the moulding cavity (4) in the rest position and the pin elements (15) being inserted in the moulding cavity (4) in the working position.
摘要:
The present invention relates to a method of producing a micro-fluidic structure element, the method comprising: (a) providing a mould assembly for moulding a micro-structured element; said mould assembly comprising a first and second mould die together forming a die cavity, said first and/or said second mould die comprising: (i) a mould surface, preferably of metal comprising a micro-structured mould surface, and (ii) one or more coin pins extending between said first and second mould die across said cavity, (b) applying a moulding material to consolidate; and (d) ejecting said consolidated moulding material from the die cavity. The invention further provides a micro-fluidic structure obtainable by the method, a mould assembly for moulding a micro-structured element of a micro-fluidic structure, and use thereof. The invention further provides a micro-fluidic structure element, the element comprising a first outer face (101) and a second outer face (108), said first and/or said second outer face comprising at least one micro-structure for at least one micro-fluidic function (103, 109), and said first and said second outer faces being in fluid communication by at least one through-going aperture (107).
摘要:
A process for the production of a braking band having ventilation ducts comprises the steps of a) moulding a core (100) in a mould, in a central position, c) filling the mould (101) with at least two layers (900; 901) of material which are to form the braking band (10), in a manner such that the core (100) is 'sandwiched' between the at least two layers (900; 901), d) performing a first heating of the mould (101) to a temperature such as to bring about hardening of the at least two layers (900; 901) until the at least two layers (900; 901) adopt a three-dimensional structure, e) subjecting the semi-finished product produced in step d) to a second heating to a temperature such as to bring about fusion of the metallic material of the core (100), and f) collecting the molten core.
摘要:
The invention relates to a method for the production of molded parts having a front face and a back face made of a hardenable reaction material, whereby a casting mold consisting of several mold parts is formed, said casting mold having a configuration that remains substantially unchanged during a molding and hardening step and forming a cavity into which the reaction material is filled and hardened, whereupon the casting mold is opened and the molded part is removed from the casting mold. At least one casting mold part has a deformable surface and the cavity of the casting mold is filled with a predetermined amount of hardenable reaction material from a reservoir. The reaction material is hardened while the volume of the cavity of the casting mold is reduced by deformation of the deformable surface of the casting mold. The invention is characterized in that a deformable casting mold surface is used, which is formed by a metal layer and in that the metal layer is kept in contact with the reaction material during deformation of the deformable casting mold surface. The invention also relates to a corresponding device for implementing the method disclosed in the invention.
摘要:
A tool for making a mounting or holder a tablet-shaped sample which is to undergo analysis in an analytical instrumant, said tool comprising a moulding (12) which defines a lower surface (14) and a side wall (16) or walls, and a pin (24) which, in use, extends upwardly above the lower surface (14) of the moulding (12), the arrangement being such that in use a tablet (26) is mounted on the upper end of the pin (24) and mouldable material is introduced into the moulding (12) so that it locates around the lower part of the tablet (26).
摘要:
Mould for manufacturing a mattress out of foam, in particular latex foam, which mould is provided with protrusions (3) on the inside in order to form cavities in the mattress, characterised in that at least a number of the protrusions (3) have a far end (5) made of an elastic material with which they fit up to an opposite part of the mould when the mould is closed, for example an opposite protrusion (3).