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The Development of “ DELTA ®”, A Well- balanced Knit Material The Development of “ DELTA ®”, A Well- balanced Knit Material Teijin Fiber Co., Ltd. Process.

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Presentation on theme: "The Development of “ DELTA ®”, A Well- balanced Knit Material The Development of “ DELTA ®”, A Well- balanced Knit Material Teijin Fiber Co., Ltd. Process."— Presentation transcript:

1 The Development of “ DELTA ®”, A Well- balanced Knit Material The Development of “ DELTA ®”, A Well- balanced Knit Material Teijin Fiber Co., Ltd. Process Engineering

2 1. Backgrounds to the Development スポーツ衣料市場の環境変化 ↓ 「 質感 」・「 物性 」・「 機能性 」 の全ての面において 高いレベルの商品が要求されている ↓ 高バランスニット素材「デルタ」の開発 School/Baseball Uniforms Athletics Casual Knit 0 Changes in the sports wear market ↓ Demand for a material with a high level of “texture”, “physical property”, and “functionality” ↓ Development of Well-balanced Knit Material “Delta®” “Texture” “Physical Property” “Functionality” Well-balanced Knit Material “DELTA®”

3 3. Outlines of DELTA® Technology (1) Problems in current products --- ” ill-balanced knit ” Surface 現状は、ポリエステル仮撚糸を使 用している商品が多い ↓ 仮撚糸が持っている “ ねじ れ ” 特性 によってループに ‘ ひずみ ’ が生じる Section Distorted loops Rough surface (not flat) Loops lacking roundness Large gaps between loops Many current products use polyester false-twist yarns ↓ Loops become distorted because of “twisting” of false-twist yarns

4 Surface Section DELTA® Conventional materials (2) Gaps between loops Large Small (1) Surface Flat Rough (3) Roundness of loops Round Flattened (4) Loop distortion Distorted No distortion Remove distortions in the loops (Balancing the knit fabric)

5 DELTA®Conventional Products Surface Appearance Bulkiness Weight g / ㎡ 138135 Thickness mm 0.710.60

6 2. Product Features of DELTA® 1) Anti-snagging property [1] What is snagging? [2] How it happens? Typical snagging (1) Physical Properties A defect that is made when the material is caught by a sharp projection

7 [3] Comparisons between Conventional Technologies and DELTA® Items Conventional Technologies DELTA® (1) Minimizing the length of exposed yarn (2) Reduction of gaps between loops (3) Increasing the binding force of knit fabric a a’ Twisted yarn, air twined yarn Increase the density of knit fabric Bond the surface with resin The ultimate flatness of the surface maintains superior physical properties with low binding force. Minimum length of exposition Minimum gaps between loops

8 DELTA® Conventional Material 15 hours 30 hours * Measurement Method: JIS L1076 Snagging D3 (Metal saw method) Anti-snagging property improved while maintaining other properties of knit material Anti-snagging property improved while maintaining other properties of knit material [4] Comparisons by Measurement Class 4-5 Class 4 Class 2-3 Class 3

9 2) Runproof A loop is pulled out by a force applied to this part DELTA®Conventional material 10 45 [1] The mechanism of running To prevent this, increase the frictional coefficient between loops ↓ Yarns forming rounded loops are effective [2] Data on actual running Round loops (Teijin test method) (mm) Length of running 0 1010 20 30 40 50

10 (2) Functionalities 1) Stretching [1] Comparison of stretching mechanism  the stretching property of knit material is provided by deformation of loops DELTA®Conventional Material The image of loop deformation Since DELTA® is free of distorted loops, loops deform smoothly. ↓ Easily stretchable to offer better comfort Since DELTA® is free of distorted loops, loops deform smoothly. ↓ Easily stretchable to offer better comfort Round loops Distorted loops

11 Stretching Stress (lengthwise) Expansion (%) DELTA® Conventional material Lengthwise: 42% Crosswise: 125% Lengthwise: 25% Crosswise: 110% Low stretching stress (especially lengthwise) ↓ Superb stretching property for comfortable and soft clothing Excellent stretching property in both directions タテ [2] A Comparison of Stretching Characteristics DELTA® Conventional material Expansion (%) Load (kg) θ θ ◆ Sample knit fabric: 28G mesh, 54 courses/44 wales

12 4. Summary ClassificationsProduct FeaturesTechnological Summary Tex- ture Appear- ance - Classy appearance without glossiness and with dense texture and flat surface 1. Development of a special false-twist yarn ↓ Low contortion 2. Optimization of knitting conditions  optimization of knitting structure, knitting conditions, and mixing other yarn 3. Development of special dyeing technique (1) Low tension processing (2) Maximization of beating effect Feel- Soft and bulky Physical Properties - Anti-snagging - Runproof - Excellent structural stability Functionalities - Smooth stretching - UV cut - Non-transparency Others It is possible to make special structures (Aqua Dry, Wind Barrier, etc.) with special yarns (Waveron, Pasmo, Eco-circle fiber, etc.) to develop a product for any situation. * One patent


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