LASER WELDING SYSTEMS AND METHODS

A laser welding system is directed to simultaneously joining respective layers of a first bag and a second bag. The system includes a first film layer adjacent to a second film layer for forming the first bag, and a third film layer adjacent to a fourth film layer for forming the second bag, each la...

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Bibliographische Detailangaben
Hauptverfasser: BUGAJ GRZEGORZ ZDZISLAW, SAVITSKI ALEXANDER, CATHCART PAUL H
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:A laser welding system is directed to simultaneously joining respective layers of a first bag and a second bag. The system includes a first film layer adjacent to a second film layer for forming the first bag, and a third film layer adjacent to a fourth film layer for forming the second bag, each layer of the plurality of film layers being made of a thermoplastic material that absorbs laser radiation having a wavelength of about 2 microns. A non-absorbing carrier film layer is positioned between the second film layer and the third film layer, the non-absorbing carrier film layer being made of a material that transmits substantially all energy of the laser radiation. A laser source applies the laser radiation toward portions of the plurality of film layers to be joined, forming the first bag generally simultaneously with the second bag. Another laser welding system is disclosed for joining first and second thermoplastic workpieces, and including a first clamping structure being composed of a material having a