Double-appearance patterning model of warp-knitted spacer textiles based on the jacquard loop index. Issue 5 (March 2022)

• Record Type: Journal Article
• Authors: Zhang, Yanting; Jiang, Gaoming; Zhang, Aijun
• Is Part Of: Textile research journal. Volume 92:Issue 5/6(2022)
• Page Start: 825
• Page End: 834
• Publication Date: 2022-03
• Subjects: Warp knitting -- double-needle bed -- piezo jacquard -- loop index -- computer-aided design; Textile industry -- Periodicals; Textile fabrics -- Periodicals; Textile research -- Periodicals; Textiles et tissus -- Industrie et commerce -- Périodiques; Textiles et tissus -- Périodiques; Textiles et tissus -- Recherche -- Périodiques; Electronic journals; 677.005
• DOI: 10.1177/00405175211041716
• Languages: English
• ISSNs: 0040-5175

Abstract

This research focuses on a three-dimensional jacquard spacer fabric, which has two sets of jacquard yarn systems to form double-appearance patterns. Because of the unique structure and formation characteristics, a specific computerized patterning model needs to be solved for efficient jacquard structure design. After a systematic analysis of double-needle bed knitting and the piezo-jacquard principle, a loop index is proposed to coordinate jacquard loops and define the single-loop-based jacquard bitmap. Also, an algorithm is derived to solve offset data to guide the knitting action by inferring the jacquard bitmap and the corresponding loops hypotaxis. This new patterning method is proposed based on two basic elements of the jacquard bitmap and lapping data. In comparison with the traditional two-course bitmap method, the new approach shows the advantage of more simplified operations by a significant decrease of jacquard color definitions.