A reaction plate includes a welded plastics planar laminate consisting of an aperture plate and a film, the aperture plate having at least one planar surface and a plurality of apertures in the planar surface of the apertured plate and the film being attached to the planar surface of the apertured plate around the or each aperture by welding. The welding is preferably laser or transmission welding. A method of forming such reaction plates using diode laser welding. An apparatus is provided for handling such reaction plates including performing polymerase chain reactions (PCRs) or primer extensions therewith.

The present invention relates to a pouch-shaped secondary battery sealing apparatus and a pouch-shaped secondary battery manufacturing method capable of radiating an infrared laser to a sealed portion in an overlapping state, whereby it is possible to increase sealing force, to prevent occurrence of wrinkles, and to reduce sealing time when forming a sealed portion of a pouch-shaped secondary battery case.

The present invention relates to a laser-weldable polyester composition, more particular to a laser-weldable fibre-rein-forced polybutylene terephthalate composition comprising: (A) a poly butylene terephthalate resin (PBT); (B) glass fibres; and (C) an alkali metal salt of a fatty acid with 24-40 carbon atoms; wherein component (B) is present in an amount in a range of 15-100 parts by weight, relative to 100 parts by weight of component (A) and component (C) is present in an amount in a range of 1.75-4.5 parts by weight, relative to 100 parts by weight of component (A). The invention also relates to a process for preparing the laser-weldable fibre-reinforced polyester composition, a process for making a moulded part from the laser-weldable fibre-reinforced polyester composition, a laser transparent moulded part made of the laser-weldable fibre-reinforced polyester composition, to a process for laser welding the laser transparent moulded part made of the laser-weldable fibre-reinforced polyester composition on laser-light-absorbent polymeric substrate, and a composite article comprising the moulded article made of the laser-weldable fibre-reinforced polyester composition bonded by laser welding on a laser-light-absorbent polymeric substrate.