FIELD: group of invention related to apparatus and method for joining layers of laminate strip of material.
SUBSTANCE: apparatus for ultrasonic joining of layers of laminate strip of material by means of ultrasound irradiation in slit between first apparatus for ultrasonic irradiation and at least one coupled apparatus.
EFFECT: possibility for making corrugated cardboard without using adhesive, lowered size of machine for making corrugated cardboard.
38 cl, 14 dwg
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