Patent ID: 6302676
Filing Date: 2001-10-16
Classification: B29C,B29D,Y10S

Abstract:
An apparatus for continuously manufacturing a spiral slide fastener element row from a continuous monofilament made of synthetic resin, comprisinga pair of screws disposed in parallel to each other in a longitudinal direction and rotating in the same direction,a mandrel extending in parallel to said screws between said pair of screws and having a substantially rectangular shape or an oval shape in section,a coupling head forming portion disposed between said pair of screws so as to sandwich said mandrel and having a receiving body on one side and a coupling head forming pressing body for forming coupling heads of elements on the other side, andan upper leg portion forming portion disposed on a front end side of said mandrel so as to be orthogonal to said coupling head forming portion,wherein said front end side of said mandrel where said upper leg portion forming portion is disposed is formed into a bent portion having a substantially L shape in section, andwherein said upper leg portion forming portion has an upper leg portion forming pressing body for pressing and deforming said monofilament in a stepped manner substantially along an inner face of said bent portion so as to eliminate a space formed between said bent portion and an inner peripheral edge of said monofilament wound around said bent portion.