EP2267202A1

EP2267202A1 - Composite yarn fabric including an untwisted cotton mass

Info

Publication number: EP2267202A1
Application number: EP08873399A
Authority: EP
Inventors: Leopoldo Marti Andres; Joaquín BALASCH RISUEÑO
Original assignee: Hispanocatalana de Textiles SL
Current assignee: Hispanocatalana de Textiles SL
Priority date: 2008-03-19
Filing date: 2008-10-08
Publication date: 2010-12-29
Also published as: ES2325852A1; ES2325852B1; WO2009115622A8; WO2009115622A1; EP2267202A4

Abstract

The invention relates to a composite yarn fabric including an untwisted cotton mass, comprising a group of warp yarns which intersect a group of weft yarns perpendicularly. The invention is characterized in that it includes masses of untwisted cotton fibrils (3) solidly connected to at least one of the yarn groups, such that said masses of cotton fibrils (3) have a larger volume than the yarns to which they are solidly connected in the longitudinal direction of the respective yarns.

Description

OBJECT OF THE INVENTION

The present invention, as this specification states in its title, relates to a composite yarn fabric including an untwisted cotton mass which main purpose is to provide a fabric included in the field of sustained growth, making the most use of row materials (cotton fibrils), variable resistance in accordance of its final utilization, desired appearance in terms of its application, limited utilizations in order to avoid washing as much as possible, which is disposable and easily recyclable.
Another implicit aim is to save raw material and consequently expend less energy resulting in lower production cost and the result of a much lower sale cost than the conventional one for the same application, whereby its marketing will be easy, quick and cheap.
The invention is mainly applied wherein the hygiene is an utmost important factor (hospitals, hotels, restaurants and the like) since by being able to be made up as a single-utilization fabric, the possibility of transmitting diseases, allergies to washing products and to other common chemical products used in conventional textile industries improves the fabric final appearance.
However, the fabric of the invention can be established (calculated) to last a fixed number of utilizations, to resist aggression in function of its application and to be given the desired appearance.
In consequence of all this the fabric of the invention is applicable to all utilizations in which the preparation costs are minimal.

BACKGROUND OF THE INVENTION

In the aspect of single-utilization, is known the utilization of cellulose materials without woven structure built by accumulating different layers of this material with mechanical or aqueous punching procedures, or by joining the layers with chemical products or the like.
On the other hand, documents of the state of the art and documents that are public domain, described fabrics using a ribbon in the weft formed by a glued veil to which a yarn has been connected. The weft structure (a ribbon) is difficult to adapt to conventional textile machines, whereby its work is expensive, slow and makes impossible the removal of hollow gaps due to the utilization of few yarns.

DESCRIPTION OF THE INVENTION

Composite yarn fabric including untwisted cotton mass is substantially formed by two similar yarns perpendicularly arranged, the conventional one origins of which could be natural, artificial or synthetic and the other composed of a cotton conventional yarn, so-called carrier, to which cotton fibrils or untwisted cotton mass have been added, so that the yarn carrier is completely surrounded giving it a round shape.
Fibrils or untwisted cotton mass incorporation can be performed in a previous operation or just before its entry into the weaving machine.
Conventional yarn may be used as warp or weft and is perpendicularly interwoven with the other similar yarn to which masses of untwisted cotton fibrils has been included, utilizing warp or weft, respectively, or both at once.
Whatever the utilization position of each one of the similar yarns perpendicularly arranged, the mass of untwisted cotton fibrils is mechanically held to the respective yarn, as the first acts as weft and the second acts as warp, or vice versa.
Since the yarn to which the mass of untwisted cotton fibrils has been included has a round shape (circular section), both warp and weft can be used, the mass of untwisted cotton fibrils can even be included into the two yarns at once (weft and warp).
The fabric of the invention can consist of several types of conventional yarns (natural, artificial or synthetic) and the other similar yarns can include a mass of untwisted cotton fibrils, being able to be of different density or weight. All of this allows the desired fabric to be developed according to the desirable final utilization.
The mixture of other yarns with different density or weight into the same fabric, both in warp and weft, allows adjusting the desired resistance according to the final utilization of the fabric of the invention.
The constant or unconstant density of used conventional yarns and the constant or unconstant density of the other yarns similar to those which have included a constant or unconstant mass of untwisted cotton fibrils, is also the base to establish the resistance of the fabric of the invention.
Since the fabric of the invention has to be really cheap, one of the ways to achieve this purpose is by using few yarns, both in weft and warp. The gaps caused by the low density of warp yarns and weft yarns, or both at once, results in a fabric with regular gaps that can be the aim pursued when fabric application is the dust, or liquid, or both at once, collection, because this position is that of maximum absorption. But if the final utilization were a napkin, tablecloth, pillow cover, hotel or residential sheets, or other similar product, the concealment of the gaps would be performed through a calendering operation ordinary in the textile industry, operation that would not undermine the absorption power of the final fabric.
It should be mentioned that the fabric of the invention is totally and fully recyclable, thus fulfilling the maximum ecological requirements.
Next, to facilitate a better understanding of this specification and being an integral part thereof, figures wherein the object of the invention has been represented in an illustrative and not limitative manner are attached.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1. - Shows a plan view of the composite yarn fabric including untwisted cotton mass object of the invention. This first figure essentially represents a fabric with few yarns, both in warp and weft, in which conventional yarns occupy the warp position and other perpendicular yarns, to which the mass of untwisted cotton fibrils has been included, occupy the weft position. The gaps defined between the yarn intersections may remain, or disappear if a calendering operation is applied.
Figure 2. - Shows another plan view of the fabric of the invention with other different embodiment. It represents a fabric of few passes both in warp and weft, in which yarns to which the mass of untwisted cotton fibrils has been included occupy the warp position and conventional yarns occupy the weft position. The resulting gaps may remain, or disappear if a calendering operation is applied.
Figure 3. - Shows another plan view of the fabric of the invention. A fabric of few passes both in warp and weft is represented. In both cases, weft and warp, the yarns to which the mass of untwisted cotton fibrils has been included have been used. The resulting gaps may remain, or disappear if a calendering operation is applied.

DESCRIPTION OF THE PREFERRED EMBODIMENT OF THE INVENTION

Next, a first embodiment example showed In figure 2 is described.
Thus, firstly referring to this Figure 2, the fabric of the invention includes warp yarns 2 to which a mass of untwisted cotton fibrils 3 has been added, and conventional weft yarns 1, which perpendicularly intersect with each other, thus fixing the mentioned mass of untwisted cotton fibrils 3. As shown in figure 2, it is a conventional fabric, whereby the fabric of the invention is much cheaper.
To fill the gaps or holes 4 formed by intersecting the weft and warp yarns, the mass of untwisted cotton fibrils 3 solidly connected in an enveloping manner to the warp yarn 2 is used, so that said mass of untwisted cotton fibrils has a higher volume than the warp yarn 2, but with a lower mechanical strength than this last yarn.
The mass of untwisted cotton fibrils 3 is in turn included with the warp yarns 2 and are interwoven with conventional yarns 1 used in the example as weft, so that different masses of untwisted cotton fibrils 3 remain adjacent one another, wherewith the holes or gaps 4 are non-existent, although in figure 2 a certain separation between these sections has been represented for better clarity thereof and in order to reference said four holes.
Mass of untwisted cotton fibrils 3 incorporation is performed during the weaving process itself. For this purpose, prior to the entry the warp yarns 2 are finely impregnated with water-soluble glue thus dragging the mass of fibrils inward the weaving machine.
In figure 1 another embodiment similar to that of figure 2 is shown, with the difference that in such figure 1 the yarns 2, to which the mass of untwisted cotton fibrils 3 has been included, occupy the weft position whereas the other yarns 1 occupy the warp position.
In figure 3 a fabric of few passes both in weft and warp is shown. In both cases, weft and warp, the yarns 2 to which the mass of untwisted cotton fibrils 3 has been included, have been used. The resulting gaps 4 may remain, or disappear if a calendering operation is applied.
Therefore it Is achieved a fabric of few passes, with sufficient resistance for the desired utilization, being able to be disposable, recyclable, with few yarns, low cost and, in accordance with the sustained growth.
The final utilization of the fabric of the invention can be any, as may be given the required resistance, either to the weft, warp or, to both or none.
Since the fabric may consist of few weft passes, the energy needed to manufacture it is less than for normal fabrics, whereby the producing rate is much higher, and the used energy is instead much smaller.
It may be provided with normal twisted yarns 1 used in weft or warp, and composite yarns formed by a yarn 2 carrying the mass of untwisted cotton fibrils used in weft or warp, or in both.
Lastly, it should be mentioned that the holes or gaps 4 caused by the limited utilization of yarns both in weft and warp, are useful when the final purpose of the fabric of the invention is absorbing liquids or dust or both things at once. Instead if the final purpose of said fabric requires the not presence of the referred gaps 4 a normal calendering operation will be applied subsequently to the weaving causing the mass of untwisted cotton fibrils 3 to expand and hide the holes and, thereby the fabric will adopt a planar and conventional appearance.

Claims

COMPOSITE YARN FABRIC INCLUDING AN UNTWISTED COTTON MASS, comprising a group of warp yarns which intersect a group of weft yarns, characterized in that it includes masses of untwisted cotton fibrils (3) solidly connected to, at least one of the two yarn groups, so that said masses of cotton fibrils (3) have a larger volume than the yarns to which said masses of cotton fibrils (3) are solidly connected in the longitudinal direction of the respective yarns.
COMPOSITE YARN FABRIC INCLUDING AN UNTWISTED COTTON MASS, according to claim 1, characterized in that the masses of untwisted cotton fibrils (3) connected to the respective yarns of at least one of the groups, are intersected with the other group of similar yarns.
COMPOSITE YARN FABRIC INCLUDING AN UNTWISTED COTTON MASS, according to any one of claims 1 or 2, characterized in that the masses of adjacent fibrils are in contact with each other, whereby the gaps (4) resulting from intersecting the fabric weft and warp yarns are completely closed.
COMPOSITE YARN FABRIC INCLUDING AN UNTWISTED COTTON MASS, according to any one of the preceding claims, characterized in that the masses of untwisted cotton fibrils (3) are solidly connected to the respective yarns in an enveloping manner.
COMPOSITE YARN FABRIC INCLUDING AN UNTWISTED COTTON MASS, according to claim 4, characterized in that the masses of untwisted cotton fibrils (3) are connected through water-soluble glue during the weaving process to the respective yarns.