Nilit Ltd.

Nilet Ltd.

Ran Rotem

Alon Weiser

Samuel Gazit

Uri Afek

Martin Blutstein

Alexander Yermolaev

Michael Eroshov

Boris Streltses

Juliana Katz

Thierry Mamodaly

Ariel Yedvab

Process for manufacturing a fabric having distinctive and sharp differentially colored patterns or designs, which process comprises the steps of: (a) producing a first and a second polyamide, said polyamides having different concentrations of amine groups; (b) producing a first and a second polyamides having different concentrations of carboxyl end-groups and sulfonate groups; (c) producing a first yarn from said first polyamide and a second yarn from said second polyamide; (d) making a fabric having first surface areas defined by said first yarn and second surface areas defined by said second yarn; and (e) chemically dyeing said fabric in a dyeing bath comprising at least one anionic (acid) dyestuff and at least one cationic (basic) dyestuff, whereby said first yarn and therefore said first surface areas are dyed predominantly by said anionic dyestuff and said second yarn and therefore said second surface areas are dyed predominantly by said cationic dyestuff.

Process for making polyamide textile articles bearing designs in different colors

A process for the manufacturing of a differentially dyeable yarn includes the steps of: a) producing two polymers having a different concentration of amine end-groups; b) spinning yarns from said two polymers; and c) producing a yarn by intermingling said spun yarns made from said two polymers, in texturing, or draw twisting, or draw winding processes.

Process for the manufacture of polyamide yarns dyeable in melange shades

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Ramat Ishay, Israel

Ran Rotem