摘要:
The sealing station in a thermoforming machine for sealing a cover sheet to a bottom sheet having pocket-like depressions to hold products includes a first mold and a second mold, the second mold having cavities to accept the pocket-like depressions in the bottom sheet. The sealing station further has a vent system, which involves an inlet channel and an outlet channel in an area of each of the cavities so that, during a sealing operation, a vent space is formed between each depression in the bottom sheet and each cavity, and air entering through the respective inlet channel passes over the depression in the bottom sheet in the vent space and escapes through the respective outlet channel.
摘要:
The invention relates to a method for the combining of hollow fibers to form a bundle, wherein after a batch-wise taking of continuously manufactured hollow fibers onto a reel apparatus the hollow fibers placed together to form bundles are wound around by means of a winding film and are subsequently welded. Such hollow fibers represent intermediate products in the manufacture of dialyzers for use in hemodialysis.
摘要:
A method of and apparatus for forming a bag assembly by RF welding. A single source of RF energy is used to generate a high frequency electric field having a first strength between tube-welding electrodes of opposing die members and a second strength less than the first strength between perimeter-welding electrodes of the opposing die members. Respective portions of the bag assembly are subjected to this variable-strength field simultaneously so that the bag assembly is formed in one welding operation. Stand-offs are used in some embodiments to limit penetration of the electrodes into the weld areas.
摘要:
The invention relates to a method for melting a thermoplastic plastic material, particularly for welding plastic parts, wherein the plastic is heated by means of heat radiation via a radiation body (4) and simultaneously by the application of a hot gas, wherein the invention provides for the radiation body (4) to be heated on the interior thereof by burning a combustion gas, and for the exhaust resulting from the burning to be applied to the plastic material.
摘要:
The present invention is a portable heat sealing apparatus. The portable heat sealing apparatus comprises a body, a heating module, an upper case and a power module. The heating module has an elongated heating element held taut by two elastic elements to ensure a smooth, continuous bond between facing surfaces of a plastic bag.
摘要:
A catheter shaft bond arrangement includes a first catheter shaft defining a first lumen, a second catheter shaft defining a second lumen, and a first bonding member. The first bonding member is configured to bond with the first and second catheter shafts to create a molded bond upon application of heat to the first bonding member. The molded bond provides a fixed axial and radial orientation of the first and second catheter shafts relative to each other. The molded bond can be generated in some arrangements without the use of the first bonding member. In other arrangements, two or more bonding members can be used to create the molded bond.
摘要:
A method and apparatus for bag making includes an input section, a sealing section and an output section. The sealing section includes a seal bar having a heat pipe with a relief zone, through which pressure is relieved. The heat pipe is preferably disposed in or near the seal bar. The relief zone can be a valve that opens and closes, or other reusable devices, or it can be a destructive relief zone. The heat pipe is preferably a generally closed cylindrical shape with the relief zone located on one end. The heat pipe can have a second relief zone, possibly located at the other end of the heat pipe. Fluid may be in the heat pipe. The invention can be implemented as a bag machine with a seal bar, or a seal bar with a heat pipe, or solely as a heat pipe.
摘要:
Methods and systems for applying heat to substrates that are in contact with an uncured bonding material or that are bonded with one or more sealants or other bonding material/s. Substrates may be heated, for example, so that the substrates may be debonded by degrading one or more mechanical properties of the bonding material/s so that the substrates may be separated. The application of heat to a substrate may be controlled based on the temperature of the substrate during the heating process. Damage-sensitive substrates, such as aircraft substrates, may be heated in a manner that controls surface temperature of the substrates to meet heat treating requirements and/or to limit heating to maximum temperatures for the substrates in a manner that substantially eliminates damage to the substrates during the heating operation while at the same time at least partially curing uncured bonding material, or degrading one or more mechanical properties of cured bonding material/s.
摘要:
A laser welding system includes a free-spacing beam delivery laser head having a linear array of at least two laser diodes. Each of the diodes generates a laser beam of a predetermined wavelength and spectral width, the laser beams adapted to weld a workpiece having a first component and at least one other component to be welded to the first component, the first component being substantially transmissive to the wavelength, the other component being substantially absorptive of the wavelength. A lens is spaced a predetermined distance from each of the laser diodes, each of the lenses adapted to focus the respective laser beam into a focused laser beam segment, thereby forming a continuous line of laser energy from a substantially serial combination of each focused laser beam segment. The continuous line of laser energy is in a plane containing the workpiece, and is substantially orthogonal to the workpiece translation direction.
摘要:
A base sheet is spanned over a lower roller, and an upper roller pulls a cover sheet along a path and presses it against the base sheet at the lower roller. A preheater housing along the path upstream of the rollers is formed with a chamber open toward the path. A radiant heater in the chamber is directed transversely at the path so as to heat the cover sheet passing along the path. A sensor along the path adjacent the chamber detects atmosphere around the chamber and generates an output when the detected atmosphere indicates an unsafe hot condition of the cover sheet. A shutter can shift between a retracted position offset from the chamber and an advanced position closing the chamber. A controller connected to the sensor shifts the shutter from the retracted position to the advanced position when the output is generated by the sensor.