摘要:
A yarn or thread may include a plurality of substantially aligned filaments, with at least ninety-five percent of a material of the filaments being a thermoplastic polymer material. Various woven textiles and knitted textiles may be formed from the yarn or thread. The woven textiles or knitted textiles may be thermal bonded to other elements to form seams. A strand that is at least partially formed from a thermoplastic polymer material may extend through the seam, and the strand may be thermal bonded at the seam. The woven textiles or knitted textiles may be shaped or molded, incorporated into products, and recycled to form other products.
摘要:
A welding apparatus (100) for use in welding first (102a) and second (102b) sheets of material together includes a seal die (110), a platen (120), a control unit (130), and a power source (140) adapted to provide energy to the seal die (110). The seal die (110) is made of a conductive material and is configured to impart thermal-mechanical energy to the first (102a) and second (102b) sheets of material. The seal die (110) includes a bottom surface (310) configured to contact the first sheet (102a), an inner edge (320), a chamfer (330) extending between the bottom surface (310) and the inner edge (320), a first blend radius (340), and a second blend radius (350). The first radius (340) extends between the chamfer (330) and the bottom surface (310), while the second radius (350) extends between the chamfer (330) and the inner edge (320). The platen (120) is configured to support the second sheet (102b), while the control unit (130) is programmed to cause the seal die (110) to be directed towards the platen (120).
摘要:
Outillage pour la fixation d'un renfort métallique (300) sur le bord d'attaque (6) d'une aube (2) de turbomachine comprenant un support d'aube (100) destiné à recevoir une aube tout en laissant des surfaces du bord d'attaque de l'aube dégagées, et un support de renfort de bord d'attaque (200) sur lequel est destiné à être monté le support d'aube (100) et comprenant deux cales latérales (208) entre lesquelles le renfort métallique (300) du bord d'attaque de l'aube est positionné, les cales (208) étant aptes à pouvoir se rapprocher et s'écarter l'une de l'autre et étant munies chacune d'une grille d'aspiration destinée à assurer une préhension du renfort métallique (300), le support de renfort de bord d'attaque (200) comprenant en outre des éléments chauffant destinés à permettre une polymérisation d'un film de colle appliqué sur des surfaces du bord d'attaque de l'aube. Et aussi, un procédé de fixation d'un renfort métallique sur le bord d'attaque (6) d'une aube (2) de turbomachine au moyen d'un tel outillage est divulgué.
摘要:
The method for welding profiled elements made of a plastic material, in particular PVC, comprises the steps of: preparing two profiled elements (3) made of a plastic material, arranged with respective zones to be welded (4) facing one another; heating the zones to be welded (4); before the heating step, the step of making a groove (19) in correspondence to a peripheral edge of each of the zones to be welded (4); coupling the zones to be welded (4) to one another, by pressing the profiled elements (3) against one another to keep the zones to be welded (4) in reciprocal contact, the step of coupling the zones to be welded (4) defining a sub-step of melting the zones to be welded (4) into one another to define a welding bead and comprising the sub-steps of: arranging pressing means (27, 28) in correspondence to the grooves (19) to define, in collaboration with the grooves (19), a containing compartment (19a) of the welding bead, the pressing means (27, 28) comprising: - a first work surface (62) having a protruding portion (63); and a second work surface (64) of final finishing; and displacing the pressing means (27, 28) alternately between: an idle position moved away from the profiled elements (3); a first work position wherein the first work surface (62) is abutted on the grooves (19) with the protruding portion (63) located inside the containing compartment (19a) to deviate the welding bead towards the side walls (61) of the containing compartment (19a); and a second work position wherein the second work surface (64) is abutted on the grooves (19) so as to obtain a finished welding bead.
摘要:
An ultrasonic sealer capable of being provided on a seal jaw of a lateral sealing apparatus for filling-packaging machines, carrying out a suitably long lateral sealing operation or an elongated uniform heat sealing operation, being formed to small dimensions, and capable of outputting a large power. The ultrasonic sealer comprising one horn (ll) having an elongated sealing surface (l5) for sealing a packaging material, a plurality of converters (l2) erected on the horn (ll), and one or not less than two fixtures (l3) provided in parallel with the converters (l2), positions, in which the ultrasonic sealer (l0) and seal jaw are fixed to each other, in the fixtures (l3) being set on a nodal plane (26) farther from the sealing surface, the horn (ll) being provided with a mounting flange for fixing the ultrasonic sealer to the seal jaw, which mounting flange may be set on a nodal plane closer to the sealing surface.
摘要:
Process for forming a permanent join between two sections of fibrous material contained in a thermosetting resin matrix, said process comprising overlaying the two sections and subjecting the overlaid sections to ultrasonic welding to form a permanent join between the two sections, wherein there is no significant change in the sub-ambient Tg of the fibrous material contained in the thermosetting resin matrix in the region of the permanent join.
摘要:
The present disclosure provides a process for producing a flexible container. In an embodiment, the process includes (A) providing a flexible container. The flexible container has (i) a body, and (ii) a neck. The process includes (B) positioning a fitment into the neck. The fitment has a top portion and a base. The fitment is composed of a polymeric material. The process includes (C) inserting a mandrel into the fitment. The mandrel includes an expandable collar composed of an elastomeric material. The process includes (D) expanding the collar radially outward to contact an inner surface of the base. The process includes (E) sealing, with a pair of opposing seal bars, the base to the neck.