Method for producing shoe soles by injection-molding
AssigneeNordica S.p.A.
InventorsMassimo Foffano, Riccardo Perotto
Life of this patent
Estimating the term…
Abstract
Method for producing soles for shoes, which initially includes the production, by molding, of a sole that has a perimetric ridge that protrudes downwards. The sole is then placed on a plunger of a mold that has a head which is shaped complementarily with respect to the lower surface of the sole and with respect to the ridge and in which there is a recess for containing the ridge and a gap for the intended flow of a second material to be injected. The last step consists in trimming the flash, which has an intended consistency.
Claims12
Method for producing a sole and at least one of a collar and a shell for connection to an upper of a shoe by injection-molding, comprising the following succesive steps:
- molding said sole with a perimeter so as to form a resting surface of said sole and a perimetric ridge of said sole that protrudes below the resting surface at least along a portion of the perimeter of said sole;
- placing said sole on a complementarily-shaped head of a plunger;
- inserting a configuration of said sole placed on said complementarily-shaped head of said plunger inside a mold so as to form a gap externally to said ridge between said ridge and an inner surface of said mold;
- injecting a controlled flow of heated fluid material into said mold so that said fluid material flows in said gap and so as to form said at least one of said collar and said shell for connection to said upper;
- and
- cutting said ridge from said resting surface of said sole.
Method for producing a sole and at least one of a collar 2nd a shell for a shoe, comprising the following steps:
- molding said sole in a mold so as to form a ground resting surface of said sole and a ridge of said sole that protrudes perimetrically and downwards with respect to the ground resting surface of said sole;
- placing said sole on a complementarily-shaped head of a plunger;
- inserting a configuration of said sole placed on said complementarily-shaped head of said plunger inside a mold so as to form a gap between said ridge and an inner surface of said mold;
- and
- injecting heated fluid material into said mold so that said fluid material flows in said gap and so as to form at least one of said collar and said shell.
Dependencies are inferred from the claim text.