Process for manufacturing furniture covers having an irregular surface, with a ultrasonic welding machine, and cover obtained thereby

摘要

The invention relates to a method for manufacturing furniture covers. According to the invention, ultrasonic welding horns 4A and opposing protuberances are arranged in order to conform to a final shape to which the cover is to correspond; a surface layer 1, upholstery padding 2 and a support layer 3 are sandwiched between the arrangement of horns and the arrangement of protuberances; the three-layer body is compressed between these arrangements and the body is subjected to an ultrasonic wave in order to heat and weld the body in its selected zones. The invention applies especially to the covering of car interiors or of furniture.