Method for making a hermaphrodite hook and loop fasteners
AssigneeErblok Associates
InventorsGeorge H. Erb, Susan E. Beard
Life of this patent
Estimating the term…
Abstract
A method is provided for making a hermaphrodite hook and loop fastener including the steps of molding a hook ribbon having mounting projections and shoulders on opposite sides of the hook ribbon, providing a separate flexible substrate, feeding a plurality of hook ribbons to a bonding station, orienting the hook ribbons with their hooks upstanding from the substrate and their mounting projections facing the substrate at the bonding station, pushing the shoulders of the hook ribbon toward the substrate thereby thrusting the mounting projections onto the substrate, and ultrasonically bonding the mounting projections to the substrate.
Claims16
The method of making a multiple-hook fastener capable of hooking engagement with an opposed fastener area containing a multiplicity of loop-like openings into which the hooks can become engaged by bringing said multiple-hook fastener into contact with such an opposed fastener area, comprising the steps of:
- forming thermoplastic material into a plurality of hook-ribbons,
- each hook-ribbon having an upper margin and a lower margin,
- each upper margin having a multiplicity of hooks upstanding in a row along the margin,
- each lower margin having a plurality of downwardly projecting mounting projections, with the respective mounting projections being located at predetermined intervals along the lower margin, with a pair of shoulders being opposite sides of respective mounting projections,
- by defining a plurality of continuous mold cavities each having the shape of a hook-ribbon and continuously moving through an injection zone by providing a plurality of endless, flexible mold bands and by revolving said mold bands endwise and by bringing the revolving mold bands into layered relationship pressed together one on top of another in said injection zone,
- injection heated thermoplastic material in said injection zone into the continuously moving continuous mold cavities for shaping the injected heated thermoplastic material into the shapes of a plurality of hook-ribbons,
- cooling such shaped thermoplastic material for forming a plurality of hook-ribbons in the continuously moving plurality of mold cavities,
- separating the continuously moving mold bands from their layered relationship for opening the mold cavities, and
- removing the hook-ribbons from the separated continuously moving mold bands,
- providing an area of flexible substrate,
- feeding the substrate through a bonding station,
- positioning a plurality of hook ribbons in laterally spaced side-by-side relationship,
- feeding said plurality of hook-ribbons laterally spaced at predetermined spacing through the bonding station together with said substrate,
- orienting said hook-ribbons with their mounting projections facing toward the area of substrate in the bonding station and with their hooks upstanding away from the substrate,
- in said bonding station pushing pairs of opposed shoulders of the hook-ribbons toward said substrate for thrusting the mounting projections onto the substrate, and
- ultrasonically bonding said mounting projections to the substrate for producing the multiple-hook fastener having rows of hooks upstanding therefrom.
The method of making a multiple-hook fastener capable of hooking engagement with an opposed fastener area containing a multiplicity of loop-like openings into which the hooks can become engaged by bringing said multiple-hook fastener into contact with such an opposed fastener area, comprising the steps of:
- forming thermoplastic material into a plurality of hook-ribbons,
- each hook-ribbon having an upper margin and a lower margin,
- each upper margin having a multiplicity of hooks upstanding in a row along the margin, with shoulders on opposite sides of each hook-ribbon,
- by defining a plurality of continuous mold cavities each having the shape of a hook-ribbon and continuously moving through an injection zone by providing a plurality of endless, flexible mold bands and by revolving said mold bands endwise and by bringing the revolving mold bands into layered relationship pressed together one on top of another in said injection zone,
- injection heated thermoplastic material in said injection zone into the continuously moving continuous mold cavities for shaping the injected heated thermoplastic material into the shapes of a plurality of hook-ribbons,
- cooling such shaped thermoplastic material for forming a plurality of hook-ribbons in the continuously moving plurality of mold cavities,
- separating the continuously moving mold bands from their layered relationship for opening the mold cavities, and
- removing the hook-ribbons from the separated continuously moving mold bands,
- providing an area of flexible substrate,
- feeding the substrate through a bonding station,
- positioning a plurality of hook ribbons in laterally spaced side-by-side relationship,
- feeding said plurality of hook-ribbons laterally spaced at predetermined spacing through the bonding station together with said substrate,
- orienting said hook-ribbons with their lower margins facing toward the area of substrate in the bonding station and with their hooks upstanding away from the substrate,
- in said bonding station pushing shoulders of the hook-ribbons toward said substrate for thrusting their lower margins onto the substrate, and
- ultrasonically bonding said lower margins to the substrate for producing the multiple-hook fastener having rows of hooks upstanding therefrom.
The method of making a multiple-hook fastener capable of hooking engagement with an opposed fastener area containing a multiplicity of loop-like openings into which the hooks can become engaged by bringing said multiple-hook fastener into contact with such an opposed fastener area, comprising the steps of:
- forming thermoplastic material into a plurality of hook-ribbons, each hook-ribbon having an upper margin and a lower margin, each upper margin having a multiplicity of hooks upstanding in a row along the margin, each hook-ribbon having shoulders on opposite sides,
- said forming of said thermoplastic material being accomplished by:
- defining a plurality of continuous mold cavities each having the shape of a hook-ribbon and continuously moving through an injection zone,
- injection heated thermoplastic material in said injection zone into the continuously moving plurality of continuous mold cavities for shaping the injected heated thermoplastic material into the shapes of a plurality of hook-ribbons,
- cooling such shaped thermoplastic material for forming a plurality of hook-ribbons in the continuously moving plurality of mold cavities,
- opening the continuously moving mold cavities and removing the hook-ribbons,
- providing an area of flexible substrate,
- feeding the substrate through a bonding station,
- positioning a plurality of hook ribbons in laterally spaced side-by-side relationship,
- feeding said plurality of hook ribbons laterally spaced at predetermined spacing through the bonding station together with said substrate,
- orienting said hook-ribbons with their lower margins facing toward the area of substrate in the bonding station and with their hooks upstanding away from the substrate,
- in said bonding station pushing shoulders of the hook-ribbons toward said substrate for thrusting their lower margins onto the substrate, and
- ultrasonically bonding said lower margins to the substrate for producing the multiple-hook fastener having rows of hooks upstanding therefrom.
Dependencies are inferred from the claim text.