Menetelmä muovilevyn ja liitoksen hitsaussauman tasoittamiseksi

摘要

The present invention discloses a planishing method for joined sheets made of a thermoplastic material. Welded ends of the plastic sheets are placed between two platens. The platens are heated to raise the temperature of the plastic material a sufficient amount to soften the plastic material without disturbing its molecular structure. The platens are pressed together with a sufficient pressure while applying heat until the sheets are pressed together providing a relatively smooth, continuous joint having a thickness similar to the thickness of a single sheet. Finally, the platens are cooled thereby cooling the joined sheets.