Composite yarn

Abstract

Composite yarn for textile purposes, characterized by: - a first thread that forms a structural core and consists of regenerated cotton fibers; - - a second component that forms a surface effect and consists of a band of discontinuous viscose fibers; wherein the first thread and the second component are joined together by twisting.

Description

[0001] The subject of the present invention is a composite yarn.

[0002] In particular, the present invention falls within the technical field of the textile industry and relates to a new structure of an industrial yarn which gives it special usability as well as a pronounced aesthetic effect.

[0003] The need underlying the present invention is to meet a clearly expressed market need: namely, the availability of a yarn that combines the environmental friendliness and economic efficiency of regenerated fibers with the luster, softness and aesthetic quality of more luxurious fibers such as viscose.

[0004] In current technology, the production of yarns with these mixed properties predominantly relies on the intimate mixing of the different fiber types before the spinning process.

[0005] This process leads to the production of a homogeneous yarn, but the characteristic properties of the individual components are inevitably weakened and mitigated.

[0006] The present utility model overcomes these limitations through a new and specific structural configuration of the yarn, which consists of joining and twisting together two structurally and visually different elements.

[0007] The yarn described in the present utility model consists of a structural core and an effect yarn.

[0008] The core is a thread - typically carded or open-end yarn - that forms the framework of the final product and provides strength, stability and volume; in its preferred form, this is made from recycled cotton, often blended with other fibers such as acrylic and polyester.

[0009] In contrast, the effect yarn consists of a ribbon or roving made of discontinuous fibers, preferably viscose, whose fibers do not exhibit spinning twist but are held in a parallel arrangement.

[0010] The final structure is created through twisting and twirling, during which the viscose tape gently wraps around the core and is fixed in position.

[0011] This specific structure offers technical advantages that cannot be achieved with other designs.

[0012] Firstly, it allows for significant value optimization by using a cost-effective material such as regenerated cotton inside the yarn, while a smaller amount of a higher-quality material such as viscose is used for the outer covering, which determines the aesthetic and haptic perception.

[0013] Another fundamental advantage lies in the resulting dynamic and three-dimensional gloss effect.

[0014] The matte, fabric-like core forms a background that, through contrast, accentuates the sheen of the viscose ribbon. Because this ribbon consists of parallel fibers, it creates a mirror-like light reflection; the result is not a uniform luster, but a 'flame-like light effect' that lends the finished product a unique depth and vibrancy. Advantageously, the yarn described in this utility model is a pre-dyed yarn, meaning that the fibers from which it is made are dyed before the yarn is spun.

[0015] With viscose yarn, the fibers are even dyed at the time of their production (extrusion) (mass dyeing). This solution allows for optimized color mixing with more refined and elegant effects, which are due not only to the different dyeability of the fibers, but also to the different colors of the fibers themselves.

[0016] This constructive solution also has an impact on sustainability, as dyeing in nature or even adding dyes during fiber extrusion makes an important contribution to saving water and energy, while also improving the lightfastness of the colors.

[0017] Furthermore, the washability in water is also optimized, ensuring easier and more environmentally friendly care of the products.

[0018] From a comfort perspective, the softness of the viscose is concentrated on the outer surface of the yarn, ensuring a more pleasant feel against the skin than a yarn made from a more intimate fiber blend. Meanwhile, the less compact structure of the surface band gives the fabric more volume and a softer, more fluid feel. Finally, this uneven structure opens up innovative dyeing possibilities, as the different chemical properties of the components allow for cross-dyeing effects in a single dye bath, enabling, for example, sophisticated two-tone melange effects directly within the yarn.

[0019] The great effectiveness of this invention also lies in its remarkable versatility, as the structural concept allows for countless variations.

[0020] Regarding the structural core, for example, it is not limited to regenerated cotton but can also be made from regenerated wool, linen, or virgin fibers. Its structure can be single-ply, multi-ply for greater strength, or "flamed" to create additional material irregularity. Similarly, the effect component can be varied to achieve different aesthetic and tactile nuances by using lyocell, modal, silk, or glossy synthetic microfiber ribbons instead of or in addition to viscose, and by changing the ratio between its diameter and that of the core to create more or less pronounced effects, even achieving a bouclé-like appearance.

[0021] The assembly process itself also offers opportunities for personalization: the degree of twisting can be varied to obtain yarns with different densities and softness, and the configuration can include a third binding thread, which can be transparent to increase durability, colored or metallized for an extra imaginative touch, or elastomeric to give elasticity to the entire product.

[0022] Advantageously, this third twine is made of polyester or, even more advantageously, of regenerated polyester.

[0023] An example of this is a configuration that perfectly embodies the balance between the described technical advantages, with a title of Nm 3500 and a final composition of approximately 45% cotton, 34% viscose, 15% acrylic and 6% polyester, which provides an extremely versatile and commercially effective end product for high-quality knitwear and weaving.

[0024] Composite yarn for textile applications, the new structure of which is designed to give the product special usability and comfort, consisting of the firm bond of a first thread forming a structural core and made of regenerated cotton fibers; a second component forming a surface effect and consisting of a band of discontinuous viscose fibers, the first thread and the second component being joined together by twisting.