COMPOSITE YARN WITH AN UNTWISTED COTTON SHEATH

Abstract

 The Invention relates to a composite yarn with an untwisted cotton sheath, of the type including a central supporting yarn element and a sheath element which surrounds the central supporting yarn element. The invention is characterised in that it is formed from a compact mass of untwisted cotton fibres, originating from a carding or combing process in the form of a ribbon. Said cotton ribbon mass is joined to the supporting yarn (2) such as to surround same uniformly and the ribbon mass (3) remains solidly connected to the supporting yarn (2).

Description

OBJECT OF THE INVENTION

[0001] The present invention, as expressed in the heading of this specification, relates to a composite yarn with an untwisted cotton sheath which has the purpose of producing an economical and resistant yarn with acceptable quality, intended for the application of fabrics of few uses, without rejecting other possible applications. Another additional purpose Included within the sustained growth and maximum use of raw materials consists (said purpose) of making use of the small cotton fibres discarded in the typical procedures of the industry.

BACKGROUND OF THE INVENTION

[0002] Different documentation is known in the state of the art are known which relate to the formation of ribbons produced from cutting the joint of a cotton lap from a carding with a series of normal yarns glued thereto. The ribbon thus produced has working difficulties for the normal textile machinery given the non-roundness of its structure.

DESCRIPTION OF THE INVENTION

[0003] The composite yarn with an untwisted cotton sheath is produced from a compact mass of short or long cotton fibres, or of both types, a mass originating from a carding or combing process in the form of a ribbon, whose width may vary between two and fifteen times and even more with respect to the average diameter of the supporting yarn.

[0004] The weight and thickness are directly proportional to the characteristics of the fabric whereto one wants to apply the yarn with a sheath of the invention.

[0005] The ribbon mass of untwisted cotton fibres is joined to the supporting yarn such as to surround same uniformly and Is secured to it so that the form achieved of a round composite yarn is totally suitable for any textile operation. The resulting yarn is of a titre greater than the supporting yarn, so that the Denier of the yarn with a sheath is the same as the Denier of the supporting yarn plus the Denier of the sheath.

[0006] The joining process of the untwisted cotton ribbon to the supporting yarn for the formation of the yarn of the invention is carried out via one or several operations of immersion in a solution of water with water-soluble glue or any other method that seeks the same purpose.

[0007] If the immersion procedure is used, the mass attraction phenomenon is manifested, achieving that the cotton fibre ribbon uniformly surrounds the supporting yarn.

[0008] The yarns of the invention thus produced have a greater volume than normally twisted yarns of the same titre or Denier and without detriment to their mechanical resistance due to the supporting yarn they incorporate. This makes the final product cheaper and it is also increased due to making use of the short cotton fibres discarded in conventional processes.

[0009] Below, in order to facilitate a better understanding of this specification and forming an integral part thereof, figures are attached wherein, with illustrative and non-limiting character, the object of the invention has been represented.

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] 

Figure 1.- Is a view of the front cut of the yarn with an untwisted cotton sheath, object of the invention. This essentially represents the supporting yarn with the untwisted cotton sheath which uniformly surrounds same.

Figure 2.- Is a cross-section of the yarn with the untwisted cotton sheath. It essentially shows the uniform distribution of the cotton fibres from the ribbon obtained from the carding or combing operations.

Figure 3. - Shows a sketch of the immersion procedure to produce the yarn object of the invention. It shows the order of the procedure.

DESCRIPTION OF A PREFERRED EMBODIMENT

[0011] Below, we will describe the Invention making reference to the numbering adopted in the figures.

[0012] Thus, the yarns of the invention have a yarn with an untwisted cotton sheath 1, produced by a procedure of immersion in a tank 4 wherein a solution of water with water-soluble glue has been poured.

[0013] The resulting yarn 1 is formed by the supporting yarn 2 and the sheath of the cotton fibres 3 originating from the ribbon produced by the previous carding or combing operations.

[0014] The yarn produced 1 from the immersion tank or tanks 4 Is subjected to a common drying system and a special winding depending on the loom or other textile machine where it is going to be processed.

[0015] Hence, the round yarn with regular untwisted cotton sheath obtained is very economical, with good resistance and a very acceptable quality bearing in mind the intention of few uses of the fabrics the round yarn with an untwisted cotton sheath of the invention will be applied to.

[0016] The yarn produced 1, as previously stated, is formed from a supporting yarn 2 whose Denier number depends on the purpose of the garment to be made with the yarn with a sheath 1 object of the invention.

[0017] The yarn produced is of greater volume than a conventional one of the same length and it is also of a greater Denier titre given the adhered presence of the untwisted cotton sheath 3. It also has the possibility of making use of the shortest cotton fibres for the formation of the sheath 3, as previously stated.

Claims

1. COMPOSITE YARN WITH AN UNTWISTED COTTON SHEATH, which including a central supporting yarn element and a sheath element which surrounds the central yarn, is characterised in that it is formed from a composite mass of untwisted cotton fibres (3) originating from a carding or combing process in the form of a ribbon, the cotton ribbon mass joined to the supporting yarn (2) such as to surround same uniformly and the ribbon mass (3) remaining solidly connected to the supporting yarn (2), configuring a resulting yarn of circular section (1) with the appearance and consistency of a single body, the supporting yarn (2) being concentrically disposed with respect to the untwisted cotton sheath (3).

2. COMPOSITE YARN WITH AN UNTWISTED COTTON SHEATH, according to claim 1, characterized in that the cotton mass in the form of a ribbon (3) has a width at least two times greater than the diameter of the supporting yarn (2).

3. COMPOSITE YARN WITH AN UNTWISTED COTTON SHEATH, according to any one of the preceding claims, characterized in that the weight of the untwisted cotton sheath (3) is proportional to the features of the fabric whereto one wants to apply the resulting yarn (1).

Drawing