Design, preparation, and characterization of auxetic weft backed weave fabrics based on Miura origami structure

The metamaterials with negative Poisson’s ratio are called auxetic materials, which as a branch of metamaterials has drawn a lot of attention in many areas. Existing auxetic knitting textiles combine flexibility and auxeticity, however the loose structure has been a main disadvantage for its application. In this study, we fabricated Miura origami structure fabrics by weaving technology in order to acquire more stable auxetic textiles. The results show that using the combination of fabric structure type and elastic yarns, an origami structure can be realized in a jacquard loom. In the Miura origami structure, the crease pattern can be separated into three parts, unfolding areas, convex areas, and concave areas. One warp system and two weft systems are compounded together, in which a weft backed weave is used to get elastic floats in the convex and concave areas, and to make the fabrics bend to the concave side. The physical map showed that the fabrics had a clear Miura origami structure and the unfolding areas were flat and even. On the basis of the designed geometric pattern, weft backed weaves can be used to construct different folded areas, spandex wrapped PET (Polyester) and inelastic PET are selected as two weft systems for weaving. Meanwhile, the Miura origami fabrics exhibit distinct in-plane negative Poisson’s ratio and out-of-plane positive Poisson’s ratio. Apart from the Miura origami structure, other origami and paper-cut structures can be realized using this method, and these special auxetic textiles have potential in protective cloths, ornamented textiles, wearable devices, and flexible sensors.

The comparison of classical weaving and laser technology in denim fabric’s design

Denim fabrics became a preferred product by many people, because of especially being a symbol of comfort. In thisstudy, the aesthetic and physical design of denim fabrics were carried out. It was aimed to compare the surface designsand structural parameters of denim fabrics obtained by weaving and laser technologies. Besides the design steps ofweaving and laser technologies were explained and compared. Twelve denim fabrics having different surface designswere obtained with the intersection of indigo dyed warp and non-dyed weft yarns based on the theme of “contrast” byusing derivatives of twill weave. Besides, these surface patterns were applied to classical denim fabrics by lasertechnology. The surface properties of denim fabrics produced by weaving technology were different for each surfacedesigns because of different floatings. However, weaving is a time-consuming method and the design steps are morecomplicated. On the other hand, surface patterns of fabrics obtained by laser technology were found similar to wovenones and it had advantages as having greater design capacity, being a simpler, faster and eco-friendly method

Biomimetic Approach for the Production of 3D Woven Spherical Composite Applied in Apparel Protection and Performance

Current sports bras are typically manufactured via a cut and sew process resulting in a high volume of post-production material waste. Seams derived from this cut and sew process are known to irritate the skin during exercise. This irritant discomfort seriously affects the dynamic comfort during exercise, hindering limb movement and displacement of the female breast. It implies a need for an alternative textile manufacturing process for a seamless sportswear-sports bra to combine the surface aesthetics with biomimetics together with anthropometry and ergonomic data. Tailoring the two yarn interlocking directions (0/90°) within the compound structure of a multilayer multilevel weave architecture provides a construction process to the production, the weaving, of seamless 3D woven spherical forms. Seamlessly shaped wovens in this paper are underpinned by biomimetic anthropometry and real-time data to produce variable spherical forms that mould and support a given set of 3D geometries. Upon completion of the weave generation using specialised weave software, the production parameters are completed upon transfer to the combined weaving technology, Mageba-Staubli Unival 100 (MS-100). The 2D on-loom woven fabric converts to a 3D shape upon removal and by pulling-pushing-unfolding the woven fabric (2D-to-3D). The scope of end applications within the sportswear-sports bra sector (but not limited to) enables a framework for the generic design geometries and production principles.

Transformation in Weaving Technology of Paata-Clothes: an unique Fabric Tie-Dye product of Odisha

Both in global market and in perspectives of modernization, preserving and popularizing the traditional weaving technique and designing, is a challenge of 21st century. As it seems, the handloom weaving is unsustainable, and unable to compete in contemporary markets, but it realized, many weavers struggle for livelihoods irrespective of old fashion outcome and to preserve their ethnic and traditional proficiency identity. Odisha, the east-coast state of India is one of them, where thousands of ethnic weavers’ are adopting their parental knowledge of weaving and preparation of micro Ikat garments in tie-&-dye technique generation after generation. In this paper, we are trying to establish the gradual transformation in weaving technology replacing but preserving traditional weaving technique. And to establish we catalyzed here the preparation of ‘Paata-clothes', one of the rarest tussar-silk fabric, produced by ‘Nuapatana’ master weavers. The paper followed the field based research method that is being practically followed by Nuapatana weavers and gets the resultant of productivity changes by relative analysis techniques.

Development of shape memory alloy-based adaptive fiber-reinforced plastics by means of open reed weaving technology

The functionalization of fiber-reinforced plastics has been improved continuously in recent years in order to broaden their application potential. By using shape memory alloys in fiber-reinforced plastics, adaptive fiber-reinforced plastics can be developed, which in turn can change their shape depending on the activation of shape memory alloys. In order to ensure the proper force transmission from shape memory alloys to fiber-reinforced plastic, these shape memory alloys need to be integrated into the reinforcing fabric. Hence, this paper presents the application of open reed weaving technology for the development of functionalized preforms for adaptive fiber-reinforced plastics. For an optimized shape memory effect during their thermal induced activation, the shape memory alloys were coated with release agent and then integrated into the woven fabric by open reed weaving technology. The hinged width of functionalized preforms was varied from 50 mm to 150 mm. These preforms were infused by a thermosetting resin matrix system with a modifier. Subsequently, the electro-mechanical testing of adaptive fiber-reinforced plastics was executed. Results show that the maximum deformation of adaptive fiber-reinforced plastics was proportional to their hinged width.

Comparison Between Atlas in Xinjiang of China and Patola in Gujarat of India

Ikat is an ancient technique by which colored patterns are formed by tying and dyeing threads before they are woven. Ikat is an ancient resist dyeing technique in which the yarns are tied and dyed according to a specific pattern prior to weaving. This paper focuses on Atlas and Patola, the most famous ikat fabrics in China and India respectively as the research objects. The effort is to provide comparative analysis from the aspects of weaving technology, pattern style, composition characteristics and colors, based on literature and images. Although they are similar in production process, they have very different characteristics due to cultural background, religion, environment and aesthetic tastes of consumers and weavers. Both textiles showcase the local plants, flowers and colour preferences. Islam influences Atlas textiles and hence without animal and figurative pattern. Patola has different patterns for consumers from different religious following. Atlas and Patola are the fabrics of inheritance and represent two different regions and cultures.