RO135663A2 - Textile matrix for composite used for manufacturing a modular system for developing a biofiltering material - Google Patents

Abstract

The invention relates to a polyester yarn fabric made as a matrix for the composite structures used for making modular systems for the development of a biofiltering material. According to the invention, the fabric is made of polyester yarns, with a length density of 1100dtex/f192 x 1/120Z, both in warp and weft, in a ribbon warping machine provided with an axial unwinding creed, the yarn tension being of 0.15 cN/dtex, with the braking performed by means of brake discs and with porcelain axle, with the yarn guide placed with a non-axiality of + - 10 mm, the weaving being carried out in an unconventional weaving machine with grippers provided with 8 shafts: 6 shafts for the ground yarns with 245 heddles/shaft + 12 auxiliary heddles and 2 shafts for the edge yarns with 18 heddles/shaft+ 4 auxiliary heddles, the pass being made in shaft bodies with 1 yarn in each heddle for the ground yarns and 2 yarns in each heddle for the edge yarns, having the weave card: //1-3-4-5/1-6-7-8/2-3-4-5/2-6-7-8//, reed width of 165 cm, the reed number being 100/10 cm, 1 yarn drawn into the reed joint, setting rate is 10, the polyester weft yarns with the length density of 1100dtex/f192x1/120Z being introduced in the joint by means of the insertion mechanism with negative gripper, and the yarn being fed by 4 pre-deliverers that work alternately.

Description

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Textile matrix for the composite used to create the modular system for the development of the biofilter material

Authors: A. Ene, C. Mihai, C. Jipa

The invention refers to a woven textile material constituted as a matrix for the composite structures used in the construction of modular systems for the development of the biofilter material.

The systems for the development of the biofilter material are generally made of buoys of different constructive shapes and colors.

A composite structure is known that has as a matrix a fabric made of polyester threads with a length density of 167dtex/f32x2/250Z both in the warp and the weft, used in the construction of systems for the development of the biofilter material, but it has the disadvantage that it does not keep the shape of the structure in difficult weather conditions (for a rough sea state of 7bf).

A composite structure with a textile matrix is also known - fabric made of polyester yarns and polyamide yarns arranged in the system in a 1:1 ratio, used in the construction of systems for the development of biofilter material, but which presents the disadvantage of an inadequate strength/mass ratio (tear resistance in warp and weft 80 daN, mass 300 g/m2).

Also, a composite structure is known which has as a matrix a fabric made of polyamide 6.6 with a length density of 660dtex/f100 x1 / 350Z both in the warp and the weft, used in the construction of systems for the development of the biofiltering material, but it has the disadvantage of a reduced resistance to the dynamic phenomena specific to operating conditions in the open sea: ice deposits, prolonged exposure to UV radiation due to the reduced fatigue resistance of the matrix.

The problem that this invention solves consists in the choice of the raw material and the connection of the fabric, so that the whole assembly ensures the following operational requirements: high flexibility, impact resistance of at least 500 daN, buoyancy, technical resource of 2 years, under conditions of min. 7bf, easy maintenance and low costs.

The fabrics according to the invention remove the disadvantages mentioned by the fact that the matrix is made of polyester threads both in the warp and the weft, with the length density 1100dtex/f192x1/120Z, the canvas connection made in 8 ite (6 for the background threads and 2 for the edge) and navigation in ite bodies, with the connection card: //1-3-4-5/1-6-7-8/2-3-4-5/2-6-7-8//.

The process of making the fabric is well-known and consists of: conditioning the threads for 24 hours at a temperature of 22-25 °C and a relative humidity of 65%, warping on a warping machine in bands with a thread tension of 0.15 cN/dtex, the weaving, made on a non-conventional weaving machine and the control meter, made on the control ramp.

The invention presents the following advantages:

- superior utilization of high-tech raw materials;

- reduction of financial efforts related to imports;

- the possibility of making it on machines in the country, with easily accessible materials;

- rigidity and flexibility corresponding to the field of application (aquaculture - biofilter material development);

- ease of handling and placement of the entire assembly;

- easy maintenance of the assembly and at low costs.

Next, the example of the invention is presented.

EXAMPLE 1

The warping of polyester yarns with a length density of 1100dtex/f192x1/120Z is carried out on a strip warping machine, equipped with an axial spreader; wire tension: 0.15 cN/dtex, braking is done with the help of porcelain brake discs and spindle, and the wire guide is placed with an eccentricity of ±10 mm, to ensure the lifting of the tip of the unfolding balloon and symmetry with the top of the unfolding format.

Weaving is carried out on an unconventional weaving machine with grabs, equipped with 8 stitches: 6 stitches for the background yarns with 245 (+12 reserve) stitches/piece and 2 stitches for the edge threads with 18 (+ 4 reserve) stitches /ita, the weaving is done in ite bodies, with 1 crochet thread for the background threads and 2 crochet threads for the edge threads, and the connection card: //1-3-4-5/1-6-7- 8/2-3-4-5/2-6-7-8//, the back width is 165 cm, the number of the back: 100, the number of threads drawn in the back box: 1, the desime wheel: 10.

Polyester weft yarns with length density 1100dtex/f192x1/120Z are inserted into the joint using the negative gripper insertion mechanism; wire feeding is carried out with the help of 4 pre-delivery machines that work alternately.

The fabric has a mass of 255 ± 13 g/m2, resistance to breaking in the warp and weft of min. 250 daN/5cm, elongation at break in both systems of at least 20%, for the fabric tested in a conditioned state.

The slip resistance for the fabric tested in conditioned condition is min. 20 daN in the warp and weft, and the tear resistance is at least 40 daN in both systems.

The fabric thus obtained constitutes the matrix for the composite structure from which the modular systems for the development of the biofilter material are made.

Claims (2)

Claims: 1. Woven fabric of polyester yarn, with a density of length HOOdtex / f192x1 / 120Z in both warp and weft, characterized thereby as a warping machine in strips, provided with a rack with axial unwinding; thread tension: 0.15 cN / dtex, braking made with the help of brake discs and porcelain shaft, thread guide placed with a deaxiality of ± 10 mm, weaving made on an unconventional weaving machine with grabs, provided with 8 items: 6 threads for the background threads with 245 each (+12 reserve) cochleas and 2 threads for the edge threads with 18 (+ 4 reserve) threads each, the embellishment made in thread bodies, with 1 thread in the threads for each the background threads and 2 in cochleas for the edge threads, and the connection card: // 1-3-4-5 / 1-6-7-8 / 2-3-4-5 / 2-6-7-8 / /, back width 165 cm, back stitch number: 100case / 10 cm, number of threads pulled in back stitch box: 1, thickness wheel: 10, polyester weft threads with length density 1100dtex / f192x1 / 120Z inserted with the help of the negative graft insertion mechanism, the wire supply is made with the help of 4 pre-deliverers that work alternately. Fabric according to claim 1 with a mass of 255 ± 13 g / sqm, resistance to warping in the warp and weft of min. 250 daN / 5cm, elongation at break in both systems of at least 20%, for fabric tested in conditioned condition, slip resistance for fabric tested in conditioned condition of min. 20 daN in warp and weft, and tear strength of at least 40 daN in both systems.