Folding Carton Converting

Mechanical Processing

Printed paperboard sheets feed into flatbed or rotary die-cutters at high speeds. During folding carton converting, steel rule dies cut blank outlines while score creasing blades impress fold channels into the board. Stripping sections remove internal waste cutouts, and blanking units separate individual carton blanks from the skeleton web.

High-speed folder-gluers then apply cold adhesive or hot melt glue to side seams before folding panels along creased scores. Precise register control during die-cutting ensures that crease lines match printed artwork cut lines within narrow fractions of a millimeter. Substrate stiffness and moisture content dictate press speeds and folding nip pressures.

Tolerance Threshold

Mechanical converting parameters govern structural carton production from paperboard sheets. Folding carton converting specifications do not apply to flexible plastic films, corrugated shipping containers, or rigid setup boxes. Processing boundaries stop at the delivery apron of folder-gluers before retail filling operations.

Conversion fails when score channel alignment drifts past established line tolerances.