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US 2015/0359295 A1Published application
Recyclable shoe insole and related method
AssigneeTietex International, Ltd.
InventorMartin Wildeman
Life of this patent
Estimating the term…
Abstract
A Strobel Insole of fully recyclable stitch-bonded fabric for use in construction of a shoe using the “California Slip Last” construction method. The stitch-bonded fabric is substantially 100% polyester stitched with two different yarns in different patterns. One side of the stitch-bonded fabric is subject to abrasion to break filaments of a relatively low denier stitching yarn to yield a soft brushed surface. A method of insole fabric production is also provided.
Claims17
A method of forming a Strobel Insole fabric comprising the steps of:
- providing a substantially 100% polyester fibrous substrate including a first polyester constituent and a second polyester constituent, wherein the second polyester constituent is characterized by a lower melting point than the first polyester constituent;
- forming a stitch-bonded fabric with a plurality of parallel needle perforation lines by stitch-bonding the fibrous substrate with a first polyester yarn of multi-filament construction defining a texturing yarn and with a second polyester yarn defining a ground yarn, wherein the texturing yarn has a lower denier than the ground yarn and wherein the texturing yarn is stitched in a zigzag pattern with underlap float segments extending between needle perforation lines across one side of the stitch-bonded fabric and wherein the ground yarn is stitched without shifting between needle perforation lines;
- heating the stitch-bonded fabric to melt or soften the second polyester constituent;
- cooling the stitch-bonded fabric following the heating step;
- and
- abrading said one side of the stitch-bonded fabric to break at least a portion of the underlap float segments and to produce a pile surface of broken filaments from the uderlap float segments.
3 more elements
A method of forming a Strobel Insole fabric comprising the steps of:
- providing a substantially 100% polyester fibrous substrate including a first polyester fiber constituent and a second polyester fiber constituent, wherein the second polyester fiber constituent is characterized by a lower melting point than the first polyester fiber constituent;
- forming a stitch-bonded fabric with a plurality of parallel needle perforation lines by stitch-bonding the fibrous substrate with a first polyester yarn of multi-filament construction defining a texturing yarn having a linear density of about 20 denier to about 100 denier and with a second polyester yarn defining a ground yarn having a linear density of about 120 denier to about 400 denier, and wherein the texturing yarn is stitched in a zigzag pattern with underlap float segments extending a lateral distance spanning at least 2 needle perforation lines across one side of the stitch-bonded fabric and wherein the ground yarn is stitched without shifting between needle perforation lines;
- heating the stitch-bonded fabric to melt or soften the second polyester fiber constituent;
- cooling the stitch-bonded fabric following the heating step;
- and
- abrading said one side of the stitch-bonded fabric by napping to break at least a portion of the underlap float segments and to produce a pile surface of broken filaments from the underlap float segments.
3 more elements
Dependencies are inferred from the claim text.