Abrasion resistant slide fastener

An abrasion resistant slide fastener, comprising:

• a support tape;
• a coupling element having a plurality of spirals each of which have upper and lower shanks, said coupling element positioned along said support tape for interengagement with a complementary coupling element;
• a filler cord positioned within and extending through said plurality of spirals of said coupling element;
• a looper thread having upper and lower looper portions stitched to said coupling element with said upper looper portion overlying said upper shank of said coupling element;
• a needle thread having upper and lower needle portions with said lower needle portion stitched through said support tape, said upper needle portion stitched through said filler cord and overlying said lower looper portion, thereby securing said looper thread, said coupling element and said filler cord to said support tape, said needle thread being stitched under a greater tension than said looper thread whereby said lower looper portion engages said filler cord and said upper looper portion is drawn toward said filler cord by said greater tension of said needle thread;
• and
• anchoring means formed by melting and severing said upper looper portion from said upper shank of said coupling element thereby forming a plasticized end of greater diameter than the lower looper portion, said anchoring means engaging said filler cord, said upper needle portion overlying and holding the midportions of said lower looper portion substantially in the interior of said filler cord after said upper portions melted from said upper shank forming anchoring means at the ends of said lower looper portion for anchoring said looper thread and said needle thread to said filler cord against said greater tension of said needle thread.