摘要:
A method for making a composite rivet (30) and upsetting the composite rivet after the riva has been inserted through (e.g., composite) structural members (34, 36) to be held together. The rivet (30) includes a core (1) having continuous and unidirectionally extending fibers (3) that, are reinforced by a thermoplastic resin. The core is surrounded by a braided jacket (5) having fibers (7) arranged in a criss-cross weave. A forming die guide (50) having a containment opening (58) extending therethrough is positioned so that the upstanding end (38) of the composite rivet (30) is received within the containment opening (58). A heated forming die (40) having a forming cavity (44) is moved into the containment opening (58) of the forming die guide (50) so as to lie in axial alignment with the upstanding end of the rivet (30). A ram (52) force the heated forming die (40) through the containment opening (58) so that the upstanding end (38) of the rivet is softened and upset within the forming cavity (44). The ability of the upstanding end (38) of the rivet (30) to spread out under the heat and pressure generated by the heated forming die (40) is limited by the containment opening (58) of the forming die guide (50).
摘要:
Disclosed is a mandrel (230) for use in Radio Frequency (RF) welding, wherein the mandrel comprises first and second conductive portions (232, 236) separated by an insulating material (234) , such that different potentials may be applied to the first and second conductive portions. Also disclosed is a method of RF welding and a method of manufacturing a mandrel .
摘要:
The impulse heat sealer comprises a metallic heat sink block (10) bearing a shallow groove (16) on the face surface thereof. The shallow groove is lined with a thin layer of an electrical insulator/heat conductor (22) and the groove is filled with metallic electrically conductive material (23) to form a smooth co-planar surface with the face surface (12) of the metallic block. This smooth surface is coated with a thin layer of release coating (26). A resilient mating surface (52) is provided in preferred embodiments for reciprocating motion, whereby an electrical impulse rapidly generates heat in the groove filler material (23) to bond together sheets of polymeric material (54, 56) and the heat is rapidly dissipated to prevent damage to the sealed sheets. Insulating slots (64) may be provided in the metallic block (10) adjacent the groove for reducing heat loss from the heat seal element (45) to the remainder of the block during heating and sealing.
摘要:
The invention relates to a device (1) for inductive sealing of a plurality of plies of a laminate (2) which comprises a carrier layer made of electrically non-conductive material, a sealing layer made of thermoplastic material and a metal layer disposed between the sealing layer and the carrier layer. In order to avoid a non-uniform heating of the sealing layer of the laminate and therefore imperfect seals, taking into account the required short heating times and the associated high energy input per unit time, it is proposed that the block (7) of each sealing jaw (3a, 3b) consists of a metallic material, the concentrator (8) of each sealing jaw (3a, 3b) is composed of a plurality of partial pieces (8a, 8b, 8c, 8d), wherein each partial piece (8a, 8b, 8c, 8d) consists of a material suitable for magnetic field concentration and all the partial pieces (8a, 8b, 8c, 8d) are electrically insulated from one another and with respect to the metal block (7). In addition, a method for inductive sealing is proposed which is particularly suitable for integration into a filling system for liquid foodstuffs with aseptic working area.
摘要:
Demande de brevet formée par : 1/4VIN Intitulée : Procédé et dispositif de thermoscellage d'un opercule sur le buvant d'un verre L'invention concerne un dispositif (10) de thermoscellage d'un opercule (18) placé sur le buvant (17) d'un verre (15), qui comporte un élément (19) déformable et thermiquement conducteur prévu pour appuyer sur l'opercule et sur le buvant, et pour chauffer l'opercule et le buvant. Une partie périphérique (190) de l'élément conducteur (19) est agencée pour s'étendre au-delà du buvant. Le dispositif comporte des moyens (24, 240, 26 à 30) d'articulation et de suspension de l'élément conducteur, et des moyens (31, 32) de transmission d'un effort d'appui exercé par un actionneur (13), à l'élément conducteur (19), qui sont distincts des moyens d'articulation et de suspension de l'élément conducteur.
摘要:
Methods and apparatus for selectively accessing a portion of a sterile cryopreserved sample are disclosed. The apparatus may include a container configured to receive the cryopreserved sample and having a first portion and a second portion, a heat sink chamber surrounding the first portion of the container, and a heat source adjacent to the second portion of the container. The chamber may be configured to maintain a non-accessed portion of the sample in a cryopreserved state. The heat source may be configured to separating an accessed portion of the sample from the non-accessed portion of the sample while maintaining the viability of the accessed portion while the non-accessed portion is maintained in the cryopreserved state.