EP1644573B1 - Method for the manufacture of awning fabrics - Google Patents
Method for the manufacture of awning fabrics Download PDFInfo
- Publication number
- EP1644573B1 EP1644573B1 EP04743881A EP04743881A EP1644573B1 EP 1644573 B1 EP1644573 B1 EP 1644573B1 EP 04743881 A EP04743881 A EP 04743881A EP 04743881 A EP04743881 A EP 04743881A EP 1644573 B1 EP1644573 B1 EP 1644573B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- yarn
- weft
- warp
- fabric
- yarns
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004744 fabric Substances 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 229920000098 polyolefin Polymers 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000004033 plastic Substances 0.000 claims abstract description 16
- 229920003023 plastic Polymers 0.000 claims abstract description 16
- 238000009941 weaving Methods 0.000 claims abstract description 10
- 239000003381 stabilizer Substances 0.000 claims abstract description 9
- 239000008187 granular material Substances 0.000 claims abstract description 4
- 238000007654 immersion Methods 0.000 claims abstract description 3
- -1 polypropylene Polymers 0.000 claims description 8
- 239000005871 repellent Substances 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 239000000049 pigment Substances 0.000 claims description 5
- 239000006096 absorbing agent Substances 0.000 claims description 3
- 229920006243 acrylic copolymer Polymers 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 3
- 239000004611 light stabiliser Substances 0.000 claims description 3
- 239000012963 UV stabilizer Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 24
- 230000035515 penetration Effects 0.000 abstract description 13
- 238000009736 wetting Methods 0.000 abstract description 10
- 238000004061 bleaching Methods 0.000 abstract description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 9
- 238000009987 spinning Methods 0.000 description 7
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 238000011282 treatment Methods 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000007730 finishing process Methods 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000007844 bleaching agent Substances 0.000 description 2
- AIXMJTYHQHQJLU-UHFFFAOYSA-N chembl210858 Chemical compound O1C(CC(=O)OC)CC(C=2C=CC(O)=CC=2)=N1 AIXMJTYHQHQJLU-UHFFFAOYSA-N 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 101001042415 Cratylia mollis Mannose/glucose-specific lectin Cramoll Proteins 0.000 description 1
- 102100029775 Eukaryotic translation initiation factor 1 Human genes 0.000 description 1
- 101001012787 Homo sapiens Eukaryotic translation initiation factor 1 Proteins 0.000 description 1
- 101000643378 Homo sapiens Serine racemase Proteins 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 125000003354 benzotriazolyl group Chemical group N1N=NC2=C1C=CC=C2* 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007378 ring spinning Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/045—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyolefin or polystyrene (co-)polymers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/047—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with fluoropolymers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2205/00—Condition, form or state of the materials
- D06N2205/10—Particulate form, e.g. powder, granule
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/12—Permeability or impermeability properties
- D06N2209/126—Permeability to liquids, absorption
- D06N2209/128—Non-permeable
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/14—Properties of the materials having chemical properties
- D06N2209/147—Stainproof, stain repellent
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1678—Resistive to light or to UV
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/06—Building materials
- D06N2211/063—Wall coverings
Definitions
- the present invention refers to a method to manufacture awning fabrics.
- US 2001/0031590 A1 discloses awning fabrics which are made from polyester filament yarn (continuous filament yarn) and/or polyester monofilament yarn.
- the invention of said document has as its object to create awning fabric that has the lowest possible weight per unit area while providing good UV stability and weather resistance.
- the European patent application num. 1355001 discloses an awning fabric which is formed by weaving, at a high density, high-bulky and texturised polyester filament yarns and then by treating uniformly the inner and outer surfaces of the resulting fabric with a coating solution of polytetrafluoroethylene.
- the awning fabrics disclosed in these patents have in common that all of them are manufactured with polyolefine yarns obtained from cut fibres, joined by the conventional spinning or ring process, and that the composition of the polyolefinic plastic material used comprises always at least two polymeric components with different melting point; as for example, polypropylene and polyethylene.
- the aim of the present invention is to solve the mentioned disadvantages by developing a manufacturing method of awning fabrics from continuous filament yarn with a single polymeric component of the polyolefin group, offering the advantages that will be described below.
- the method of the present invention refers to awning fabrics with warp yarns and weft yarns involving the steps of weaving said warp yarns and said weft yarns with a density over 16 warp yarns per centimetre and 10 weft yarns per centimetre, and treating the fabric by immersion with a water-repellent product, and is characterised in that prior to the weaving step, warp yarns and weft yarns are prepared following the steps of:
- UV stabiliser it means a product which, when admixed with a thermoplastic resin, selectively absorbs UV rays.
- the fabrics of the present invention manufactured from continuous filament yarns of a single polymeric component of the polyolefin group, have presented a texture, rigidity and inscription effects optimal to be used in awnings. Furthermore, said fabrics present the advantages which are described below, respect to the fabrics for awnings with polyolefin yarns, described in the state the art.
- Fabrics of polyolefin obtained by the method of the present invention are very suitable for manufacturing awnings since they have, respect of other polyolefin fabrics of continuous filament known in the state of the art, at the same time, an optimum resistance to wetting, water penetration and bleaching caused by the sunlight.
- said only polymeric component is polypropylene.
- the step which involves texturing the warp or weft yarn allow to achieve a natural fibre look of the fabric.
- step b) a step which involves twisting the weft or warp yarn to make the weaving easier is carried on.
- the step of texturing is carried on a step which involves twisting the weft or warp yarn.
- the warp yarn is textured to achieve a natural fibre look, and, at the same time, the weft yarn is twisted to make the yarn weaving easier.
- the extruded yarn has between 30 and 340 filaments, so that a good texturing of the yarn is carried on.
- the fabric has 30 warp yarns per centimetre and 15 weft yarns per centimetre, to create a woven structure dense enough to achieve a good resistance to water penetration.
- the water-repellent product is a fluoro-acrylic copolymer, so that a water penetration resistance between 10 and 80 cm of water column is achieved.
- the UV stabiliser comprises a Hindered Amine Light Stabiliser (HALS).
- HALS is a chemically reactive substance that scavenge free radicals, created by the UV light induced degradation of the polymer matrix, which prevents the physical degradation of said polymer.
- said plastic material comprise between 0.1% and 10% of pigments, to obtain the desired colour.
- said UV stabilizer product comprises, furthermore, an UV absorber of high molecular weight, which protects from the sun the pigments with comprises the plastic material, and prevents the decolouration of the fabric.
- the method of manufacturing awning fabrics starts with the preparation of material of polypropylene granulate, adding 0.8% of stabilizer product and 3% of a combination of pigments based on polyolefin.
- the stabilizer product comprises a mix of a Hindered Amine Light Stabilizer (HALS) and an UV absorber of high molecular weight, preferably of the benzotriazole group.
- HALS Hindered Amine Light Stabilizer
- the method of manufacturing continuous filament warp yarn and continuous filament weft yarn starts, with the extrusion method. Following that, it continues with the texturing process for the warp yarn and the twisting process for the weft yarn.
- the extrusion process of the warp yarn and the weft yarn starts with the insertion of the polyolefinic plastic material, comprising the UV stabiliser and the pigments, into an extruder and it continues with the application of an extrusion temperature of 230°C.
- the melted plastic is driven through an isolated conduct up to the spinning head of the extruder, where it is forced by the pressure pumps through the spinplates.
- the spinplates have 0.3 mm-diameter holes. The number of holes determines the yarn filaments, due to be 120.
- the yarn is air-cooled at 15°C. Afterwards, 1% of spinning oil is applied.
- the yarn is then stretched to orientate and align the molecular chains, thus achieving an acceptable tenacity. It is stretched by means of hot cylinders (120°C) and/or by means of ovens (140°C).
- the stretch ratio is from 1 to 4.
- the yarn suffers a process of shrinking of 5% by means of hot cylinders and/or by means of ovens.
- the amount of melted material going through the spinplates along with the stretch and shrinkage ratio determines the yarn coarseness or count, of preferably 440 dtex.
- the cone winding of the yarn is carried on by means of a winding machine.
- the wound warp yarn is textured to achieve a natural fibre look by air pressure.
- the method involves putting the yarn into water to moisten it, and immediately inserting it into a hole under air pressure, in a determined direction, which curls the filaments and achieves the texturing effect.
- the air pressure rating in this hole is 11 bar. Once textured, the yarn is wound again.
- the extruded yarn is inserted into a double-twist twisting machine applying an 80 turns per metre torsion.
- the warp yarns are warped in a beam and then placed on the back of the loom, in the right shape to achieve the necessary design.
- the weft yarns are placed on a bobbin holder and they are then inserted into the loom perpendicularly to the warp yarns.
- the final fabric obtained with a specific weaving machine for this case has a woven structure of 15 weft yarns per centimetre and 30 warp yarns per centimetre. This weaving density is enough to achieve a good water penetration resistance with the subsequent finishing treatment.
- the finishing process involves treating the fabric with a water-repellent product. This process starts with the fabric washing with an anionic product at 90°C for 6 hours to remove the remains of spinning oil. After that, a water wash is carried on and finally a moister-proofing of the fabric with a fluoro-acrylic copolymer in emulsion.
- the application dose of this copolymer is 4% for a initial 50% fabric humidity.
- the treated fabric is dried in an oven at 130°C for 2.5 minutes.
- the finishing guarantees a fabric enduring a 20 cm water column, according to UNE EN 20811 Regulation, and having a high resistance (ISO5) to wetting, according to UNE EN 24920 Regulation.
- the described process results in obtaining a fabric of continuous filament yarn of polypropylene which, unlike the other polyolefinic fabrics with continuous filament yarns known in the state of the technique, meets all quality standards established for awning fabrics, especially regarding its water penetration and wetting resistance.
- the annexed table shows the results of a comparative test made with two pieces of polyolefin fabric of continuous filament yarn.
- Fabric A is a sample of the fabric obtained by the method of the present invention, whereas fabric B is a current state of the art polyolefin fabric suitable to be applied to upholstery and outdoor furniture covering.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Woven Fabrics (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Artificial Filaments (AREA)
Abstract
Description
- The present invention refers to a method to manufacture awning fabrics.
- For the manufacture of awning fabrics, mass dyed acrylic yarns are used.
- The use of acrylic yarn for manufacturing awning fabrics has the following disadvantages or aspects to be improved;
- ■ Need to treat solvents used in the process of extrusion to guarantee a correct environmental management of those solvents.
- ■ Difficulty of recycling due to its high cost.
- ■ Limited resistance to tearing and traction of yarns due to the fact that they are formed from cut fibres joined by the process of conventional or ring spinning.
- ■ Shape loss of the fabric in case of plenty of rain, due to the loss of resistance the acrylic yarn suffers once wet.
- ■ Easy degradation of the fabric in highly damp environments.
- ■ A fabric's level of toxicity which fails to meet the Oeko-Tex Standard 100 Class I, indicating that the product is suitable to be used by babies.
- ■ Difficulty to keep the fabric clean due to its low repellence and the impossibility to use bleach for its cleaning.
- ■ Higher heat conductivity of the material, raising the temperature under the awning.
- The United States patent application num.
US 2001/0031590 A1 discloses awning fabrics which are made from polyester filament yarn (continuous filament yarn) and/or polyester monofilament yarn. The invention of said document has as its object to create awning fabric that has the lowest possible weight per unit area while providing good UV stability and weather resistance. - Likewise, the European patent application num.
1355001 discloses an awning fabric which is formed by weaving, at a high density, high-bulky and texturised polyester filament yarns and then by treating uniformly the inner and outer surfaces of the resulting fabric with a coating solution of polytetrafluoroethylene. - There are well-known fabrics manufactured with polyolefinic materials applicable to the nautical sector as outdoor covering materials, including, on one or both sides, a compact coat of plastic material based on polyvinyl chloride (PVC), polyolefins or other plastic resins, making them completely impermeable. These fabrics are not suitable to be used in manufacturing awnings, since their fabric is too thick and too heavy, and the compact plastic coat cracks and bleaches easily.
- There are well-known fabrics manufactured with polyolefinic materials, from continuous filament yarn, applicable to upholstery and outdoor furniture covering. These fabrics have a warp yarn density under 16 yarns per centimetre and a weft yarn density under 10 yarns per centimetre. This density disadvantageously restricts the kind of water-repellent treatment to apply to the fabric, so only one range of water-repellent treatments is applicable making the product unsuitable for awning manufacturing due to the fact, for instance, that the resulting fabric is too thick and too heavy. Thus, in practice, the known fabrics manufactured with polyolefinic materials applicable to upholstery and outdoor furniture covering, have a low resistance (<IS05) to wetting (UNE EN 24920 Regulation) and water penetration resistance (UNE EN 20811 Regulation) under 10 cm of water column.
- There are known fabrics manufactured with polyolefinic materials applicable to awning fabrics, such as those disclosed by
EP 0607933 ,EP 0629724 andEP 0816544 . - The awning fabrics disclosed in these patents have in common that all of them are manufactured with polyolefine yarns obtained from cut fibres, joined by the conventional spinning or ring process, and that the composition of the polyolefinic plastic material used comprises always at least two polymeric components with different melting point; as for example, polypropylene and polyethylene.
- In
EP 0816544 andEP 0629724 , the use of yarns of cut fibres of polyolefinic plastic material with a base of a single polymeric component, such as polypropylene, is ruled out, because the fabrics manufactured with fibres of said material present a texture, inscription effects and rigidity degree not suitable to be used in the manufacturing of awnings. - The fabrics and the associated method for manufacturing said fabrics, disclosed in said three patents, present these aspects to be enhanced:
- Limited strength to breaking, tearing, abrasion and to the deformation of the fabric, because the yarns are made from cut fibres.
- The fabric is difficult to be washed, because of the great number of cavities formed between the yarn fibres.
- The water-resistant finishing of the fabric is difficult to be performed, because of the great number of cavities formed between the yarn fibres, where water particles can be deposited easily.
- It is easy that mildew appears in the fabric, because of the great number of cavities formed between the fibres of the yarn, which make the fabric too sensitive to humidity.
- High cost of treatment/elimination of the wastes generated during the manufacturing method of the yarn, because oils are used which are very water-soluble, in the spinning process and in the twisting process.
- It is difficult to recycle the polyolefinic plastic material, because this is formed at least by two polymeric components with different melting point.
- It is difficult to apply the finishing processes to give water-proof properties to the fabric, because of the little temperature margin that can be used with a polyolefinic plastic material, which comprises more than one polymeric component with different melting point.
- There are not well-known fabrics manufactured from continuous filament yarn with a single polymeric component of the polyolefin group applicable to awning fabrics.
- The aim of the present invention is to solve the mentioned disadvantages by developing a manufacturing method of awning fabrics from continuous filament yarn with a single polymeric component of the polyolefin group, offering the advantages that will be described below.
- According to this aim, the method of the present invention refers to awning fabrics with warp yarns and weft yarns involving the steps of weaving said warp yarns and said weft yarns with a density over 16 warp yarns per centimetre and 10 weft yarns per centimetre, and treating the fabric by immersion with a water-repellent product, and is characterised in that prior to the weaving step, warp yarns and weft yarns are prepared following the steps of:
- a) Preparing plastic material comprising granulate of a single polymeric component of the polyolefin group, and at least 0.2% of UV stabiliser.
- b) Extruding the continuous filament warp yarn and the continuous filament weft yarn.
- c) Texturing said continuous filament warp yarn or said continuous filament weft yarn.
- As UV stabiliser it means a product which, when admixed with a thermoplastic resin, selectively absorbs UV rays.
- Manufacturing awnings from polyolefin yarns offers the following advantages regarding the manufacture from acrylic yarns:
- ■ No dangerous solvents or chemicals are used in the polyolefin yarn manufacturing method.
- ■ Low melting point of the polyolefin yarn, so the need of energy of the manufacturing method is lower than that of the acrylic yarn. Additionally, the low melting point makes it easier to weld different pieces of fabric and roll them up later.
- ■ Recycling of polyolefin yarns and fabrics is possible and also financially feasible.
- ■ Higher resistance to tearing and breaking of polyolefin yarn than that of acrylic yarn due to its being made up of continuous filaments.
- ■ Same resistance of polyolefin yarn either dry or wet, so there is no shape loss in case of plenty of rain.
- ■ Polyolefin yarns humidity absorption is 0.05%, outstandingly lower than that of acrylic yarns, which is between 1% and 2.5%, so this means a high resistance to bacteria and micro organisms.
- ■ No toxicity of polyolefin fabrics, so they can meet the Oeko-Tex Standard 100 Class I, and they are suitable to be used on products for babies.
- ■ High resistance to stains on polyolefin fabrics due to the low absorption and water repellence. Cleaning of polyolefin fabrics is simpler than that of acrylic fabrics since they can be washed with bleach without degrading the fabric.
- ■ Polyolefin yarns density is lower than that of acrylic yarns, so polyolefin fabrics are very light.
- ■ Lower heat conductivity of polyolefins contributing to a lower temperature under the awning.
- Surprisingly, the fabrics of the present invention, manufactured from continuous filament yarns of a single polymeric component of the polyolefin group, have presented a texture, rigidity and inscription effects optimal to be used in awnings. Furthermore, said fabrics present the advantages which are described below, respect to the fabrics for awnings with polyolefin yarns, described in the state the art.
- As they are continuous filament yarns, in spite of yarn of cut fibres, it is observed:
- Increase of the breaking strength in at least 30% in the direction of the weft, and in 10% in the direction of the warp.
- Increase of the tear strength in at least 20% in the direction of the weft, and in 10% in the direction of the warp.
- Greater abrasion strength.
- Greater strength against deformations.
- Greater cleaning capability, because there are no cavities in the yarn.
- Greater simplicity to provide the water-proof finishing of the fabric, because there are no cavities in which the water form a deposit.
- Greater resistance to the formation of mildew, because it is less sensible to humidity because the yarn has no cavities.
- Lower treatment/elimination cost of the debris generated by the manufacturing method of the yarn, because no spinning oils associated to said method are used, because there is no spinning process.
- As they are polyolefin yarns which comprise a single polymeric component, in spite of several polymeric components, it is observed:
- Easier recycling, because only the melting temperature of one polymeric component has to be taken in account.
- It is easier to apply the finishing process to provide water-proof properties to the fabric, because the margin of temperatures which can be used is very wide, as it is a plastic material of a single component.
- Lighter weight of the fabric.
- Thanks to the method of the present invention, it is possible to obtain fabrics manufactured with continuous filament polyolefin yarn with high resistance (ISO5) to wetting (UNE EN 24920), water penetration resistance (UNE EN 20811 Regulation) over 10 cm of water column, preferably of 20 cm, and an index of fastness of colour under the light (UNE-EN ISO 105-b02:2001 Regulation) classified as good to very good, that is, higher that 6, preferably of 7.
- Fabrics of polyolefin obtained by the method of the present invention are very suitable for manufacturing awnings since they have, respect of other polyolefin fabrics of continuous filament known in the state of the art, at the same time, an optimum resistance to wetting, water penetration and bleaching caused by the sunlight.
- Preferably, said only polymeric component is polypropylene.
- the step which involves texturing the warp or weft yarn allow to achieve a natural fibre look of the fabric.
- Advantageously, after step b) a step which involves twisting the weft or warp yarn to make the weaving easier is carried on.
- Preferably, after the step of texturing the warp or weft yarn is carried on a step which involves twisting the weft or warp yarn.
- According to a preferred embodiment of the present invention, the warp yarn is textured to achieve a natural fibre look, and, at the same time, the weft yarn is twisted to make the yarn weaving easier.
- Preferably, the extruded yarn has between 30 and 340 filaments, so that a good texturing of the yarn is carried on.
- Preferably, the fabric has 30 warp yarns per centimetre and 15 weft yarns per centimetre, to create a woven structure dense enough to achieve a good resistance to water penetration.
- Preferably, the water-repellent product is a fluoro-acrylic copolymer, so that a water penetration resistance between 10 and 80 cm of water column is achieved.
- Preferably, the UV stabiliser comprises a Hindered Amine Light Stabiliser (HALS). HALS is a chemically reactive substance that scavenge free radicals, created by the UV light induced degradation of the polymer matrix, which prevents the physical degradation of said polymer.
- Preferably, said plastic material comprise between 0.1% and 10% of pigments, to obtain the desired colour.
- Advantageously, said UV stabilizer product comprises, furthermore, an UV absorber of high molecular weight, which protects from the sun the pigments with comprises the plastic material, and prevents the decolouration of the fabric.
- For a better understanding of the invention, an example of the embodiment is shown below.
- The method of manufacturing awning fabrics starts with the preparation of material of polypropylene granulate, adding 0.8% of stabilizer product and 3% of a combination of pigments based on polyolefin. The stabilizer product comprises a mix of a Hindered Amine Light Stabilizer (HALS) and an UV absorber of high molecular weight, preferably of the benzotriazole group.
- According to this preferred embodiment, the method of manufacturing continuous filament warp yarn and continuous filament weft yarn starts, with the extrusion method. Following that, it continues with the texturing process for the warp yarn and the twisting process for the weft yarn.
- The extrusion process of the warp yarn and the weft yarn starts with the insertion of the polyolefinic plastic material, comprising the UV stabiliser and the pigments, into an extruder and it continues with the application of an extrusion temperature of 230°C. The melted plastic is driven through an isolated conduct up to the spinning head of the extruder, where it is forced by the pressure pumps through the spinplates. The spinplates have 0.3 mm-diameter holes. The number of holes determines the yarn filaments, due to be 120.
- Once the yarn has gone through the spinplates it is air-cooled at 15°C. Afterwards, 1% of spinning oil is applied. The yarn is then stretched to orientate and align the molecular chains, thus achieving an acceptable tenacity. It is stretched by means of hot cylinders (120°C) and/or by means of ovens (140°C). The stretch ratio is from 1 to 4. Once stretched, the yarn suffers a process of shrinking of 5% by means of hot cylinders and/or by means of ovens. The amount of melted material going through the spinplates along with the stretch and shrinkage ratio determines the yarn coarseness or count, of preferably 440 dtex. Finally, the cone winding of the yarn is carried on by means of a winding machine.
- The wound warp yarn is textured to achieve a natural fibre look by air pressure. The method involves putting the yarn into water to moisten it, and immediately inserting it into a hole under air pressure, in a determined direction, which curls the filaments and achieves the texturing effect. The air pressure rating in this hole is 11 bar. Once textured, the yarn is wound again.
- To carry on the process of weft yarn twisting, the extruded yarn is inserted into a double-twist twisting machine applying an 80 turns per metre torsion.
- To carry on the method of manufacturing the fabric, the warp yarns are warped in a beam and then placed on the back of the loom, in the right shape to achieve the necessary design. The weft yarns are placed on a bobbin holder and they are then inserted into the loom perpendicularly to the warp yarns. The final fabric obtained with a specific weaving machine for this case, has a woven structure of 15 weft yarns per centimetre and 30 warp yarns per centimetre. This weaving density is enough to achieve a good water penetration resistance with the subsequent finishing treatment.
- The finishing process involves treating the fabric with a water-repellent product. This process starts with the fabric washing with an anionic product at 90°C for 6 hours to remove the remains of spinning oil. After that, a water wash is carried on and finally a moister-proofing of the fabric with a fluoro-acrylic copolymer in emulsion. The application dose of this copolymer is 4% for a initial 50% fabric humidity. The treated fabric is dried in an oven at 130°C for 2.5 minutes. The finishing guarantees a fabric enduring a 20 cm water column, according to UNE EN 20811 Regulation, and having a high resistance (ISO5) to wetting, according to UNE EN 24920 Regulation.
- The described process results in obtaining a fabric of continuous filament yarn of polypropylene which, unlike the other polyolefinic fabrics with continuous filament yarns known in the state of the technique, meets all quality standards established for awning fabrics, especially regarding its water penetration and wetting resistance.
- The annexed table shows the results of a comparative test made with two pieces of polyolefin fabric of continuous filament yarn. Fabric A is a sample of the fabric obtained by the method of the present invention, whereas fabric B is a current state of the art polyolefin fabric suitable to be applied to upholstery and outdoor furniture covering.
- The parameters analysed on the fabric were the following:
- ■ Mass per unit area, under UNE EN 12127 Regulation, involving the determination of a square metre of fabric's weight.
- ■ Resistance to wetting, under UNE EN 24920 Regulation, involving the determination of the fabrics' water-repellence.
- ■ Resistance to water penetration, under UNE EN 20811 Regulation, involving the determination of the amount of water (cm) which can go through a fabric.
- ■ Fastness of colour under the light, under UNE EN ISO 105-b02-Method 2, involving the determination of the index of fastness of the colour under the light, within a lower to higher fastness scale, from 1 to 8.
- As may be observed on table 1, the resistance to water penetration and to wetting of fabric (A) of the present invention is much higher than that of fabric (B). Thus, in spite of the fact that both fabrics are prepared for a long-term exposure to the sunlight, since they have the same fastness of colour under the sunlight, only fabric (A) of the present invention is suitable to be used on manufacturing awnings, due to the fact that only this fabric has a resistance to water penetration and to wetting suitable to be used on manufacturing awnings.
Fabric | Mass per unit area | Resistance to wetting | Resistance to water penetration | Fastness of the colour under the light |
g/M2 UNE EN 12127 | UNE EN 24920 | Cm UNE EN 20811 | Index UNE EN ISO 105B02:2001 | |
A | 250.28 | ISO5 | 21.4 | 6-7 |
B | 202.85 | ISO1 | 3.8 | 6-7 |
Note : ISO 5 = No water adherence or penetration ISO 1 = Total wetness of the whole upper surface |
Claims (11)
- Method of manufacture of awning fabrics with warp yarns and weft yarns involving the steps of weaving said warp yarns and said weft yarns with a density over 16 warp yarns per centimetre and 10 weft yarns per centimetre, and treating the fabric by immersion with a water-repellent product,
characterised in that prior to the weaving step, warp yarns and weft yarns are prepared following the steps of:a) Preparing plastic material comprising granulate of a single polymeric component of the polyolefin group, and at least 0.2% of UV stabiliser.b) Extruding the continuous filament warp yarn and the continuous filament weft yarn.c) Texturing said continuos filament warp yarn or said continuos filament weft yarn. - Method according to claim 1, characterised in that said single polymeric component is polypropylene.
- Method according to claim 1, characterised in that, after step b), a step which involves twisting the weft or warp yarn is carried on.
- Method according to claim 1, characterised in that, after the step of texturing the warp yarn or the weft yarn, a step which involves twisting the weft or warp yarn is carried on.
- Method according to claim number 1 or 4, characterised in that the extruded yarn comprises between 30 and 340 filaments.
- Method according to claim 1, characterised in that the fabric comprises 30 warp yarns per centimetre and 15 weft yarns per centimetre.
- Method according to claim 1, characterised in that the water-repellent product is a fluoro-acrylic copolymer.
- Method according to claim 1, characterised in that the UV stabiliser comprises a Hindered Amine Light Stabiliser.
- Method according to claim 1, characterised in that said plastic material comprise between 0.1% and 10% of pigments.
- Method according to claims 8 and 9, characterised in that said UV stabilizer product also comprises an UV absorber of high molecular weight.
- Use of textured continuous filament yarn of a single polymeric component of the polyolefin group as warp yarn or weft yarn in fabrics to be used as awnings.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200301606A ES2234407B1 (en) | 2003-07-10 | 2003-07-10 | PROCEDURE OF MANUFACTURE OF FABRICS OF FOLDERS AND SIMILAR. |
PCT/IB2004/002218 WO2005005714A1 (en) | 2003-07-10 | 2004-07-07 | Method for the manufacture of awning fabrics and similar materials |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1644573A1 EP1644573A1 (en) | 2006-04-12 |
EP1644573B1 true EP1644573B1 (en) | 2012-06-13 |
Family
ID=34043269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP04743881A Expired - Lifetime EP1644573B1 (en) | 2003-07-10 | 2004-07-07 | Method for the manufacture of awning fabrics |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1644573B1 (en) |
DK (1) | DK1644573T3 (en) |
ES (2) | ES2234407B1 (en) |
WO (1) | WO2005005714A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10214836B1 (en) | 2017-08-18 | 2019-02-26 | Glen Raven, Inc. | Acrylic compositions including a hindered amine light stabilizer and methods of making and using the same |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US11767616B2 (en) | 2017-08-18 | 2023-09-26 | Glen Raven, Inc. | Acrylic compositions including a hindered amine light stabilizer and methods of making and using the same |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI81051C (en) * | 1988-08-04 | 1990-09-10 | Schauman Wilh Oy | LASTPRESENNING. |
FR2683535B1 (en) * | 1991-11-12 | 1994-10-28 | Atochem | NOVEL FLUORINATED COPOLYMERS AND THEIR USE FOR COATING AND IMPREGNATION OF VARIOUS SUBSTRATES. |
DE4301166C2 (en) | 1993-01-19 | 1997-12-18 | Mehler Tech Textilien Gmbh | Textile fabric for awnings, umbrellas, tents, tarpaulins and the like and method for its production |
AT402743B (en) | 1993-06-18 | 1997-08-25 | Asota Gmbh | RECYCLABLE POLYOLEFINE FABRIC |
US5431979A (en) * | 1994-04-12 | 1995-07-11 | Hoechst Celanese Corporation | Cut-resistant tarpaulin |
AT404365B (en) * | 1996-06-28 | 1998-11-25 | Asota Gmbh | RECYCLABLE FABRIC MADE OF POLYOLE YARN |
FR2756290B1 (en) * | 1996-11-27 | 1998-12-31 | Atochem Elf Sa | FLUORINATED COPOLYMERS FOR OLEOPHOBIC AND HYDROPHOBIC TREATMENT OF VARIOUS SUBSTRATES |
DE59812014D1 (en) * | 1997-05-14 | 2004-11-04 | Borealis Gmbh Schwechat Mannsw | Polyolefin fibers and polyolefin yarns and textile fabrics made from them |
FI3882U1 (en) * | 1998-10-22 | 1999-04-12 | Upm Kymmene Corp | Cover |
JP2000127312A (en) * | 1998-10-30 | 2000-05-09 | Hagihara Industries Inc | Cloth sheet |
DE10018484A1 (en) | 2000-04-14 | 2001-10-18 | Schmitz Werke | Awning fabric and process for its manufacture |
KR20020091288A (en) * | 2001-05-30 | 2002-12-06 | 한국타포린 주식회사 | Tarpaulin using resin composition for press-coating and method for preparing the same |
KR100389049B1 (en) | 2002-04-15 | 2003-06-25 | Gu Ui Mun | Awning fabric and method for producing thereof |
-
2003
- 2003-07-10 ES ES200301606A patent/ES2234407B1/en not_active Expired - Fee Related
-
2004
- 2004-07-07 EP EP04743881A patent/EP1644573B1/en not_active Expired - Lifetime
- 2004-07-07 DK DK04743881.7T patent/DK1644573T3/en active
- 2004-07-07 ES ES04743881T patent/ES2388062T3/en not_active Expired - Lifetime
- 2004-07-07 WO PCT/IB2004/002218 patent/WO2005005714A1/en active Search and Examination
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10214836B1 (en) | 2017-08-18 | 2019-02-26 | Glen Raven, Inc. | Acrylic compositions including a hindered amine light stabilizer and methods of making and using the same |
Also Published As
Publication number | Publication date |
---|---|
DK1644573T3 (en) | 2012-09-03 |
ES2388062T3 (en) | 2012-10-08 |
ES2234407B1 (en) | 2006-11-01 |
WO2005005714A1 (en) | 2005-01-20 |
ES2234407A1 (en) | 2005-06-16 |
EP1644573A1 (en) | 2006-04-12 |
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