Abstract A welt seaming lace assembly, for forming welted seams for upholstered furniture, formed of a thin, flexible, thermoplastic core covered with an open braided mesh formed of thread, and a heat reactable adhesive coating the thread and core, and a thin, thermoplastic, outer covering, including an integral sewing flange, hot extruded around the adhesive coated mesh covered core. The adhesive coating is applied hot to momentarily soften the core for both adhesively bonding to and partially embedding the thread in the surface of the core. Later, after cooling, the extrusion of the outer covering reactivates the adhesive for adhesively bonding the core and threads to and partially embedding the threads in the outer covering.
In a welt seaming lace assembly comprising a thin, flexible core, formed of a thermoplastic material which is smooth, hard and flexible at room temperatures, but which softens at elevated temperatures, and returns to room temperature conditions when cooled; and a braided open mesh surrounding the core along its full length and formed of a thread having a higher melting point than that of the core material; and a heat reactable adhesive surrounding the mesh covered core, said threads being heat bonded adhesively to as well as partially embedded into the surface of the core for mechanically interlocking therewith; the improvement comprising: a thin wall thermoplastic outer covering completely surrounding and extending the full length of the adhesive coated mesh covered core and formed of a material having a lower melting point than the thread, said thread and core being heat bonded adhesively to the inner surface of the covering as well as the thread being partially embedded into said surface for mechanical interlocking therewith for forming the completed assembly.
Claim 2
Dependent Claim
25 words
A construction as defined in claim 2, and including a thin, radially outwardly extending flange, having an inner end formed integral with sAid outer covering.