AU2021403582A1 - Flat textile structure with coating - Google Patents
Flat textile structure with coating Download PDFInfo
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- AU2021403582A1 AU2021403582A1 AU2021403582A AU2021403582A AU2021403582A1 AU 2021403582 A1 AU2021403582 A1 AU 2021403582A1 AU 2021403582 A AU2021403582 A AU 2021403582A AU 2021403582 A AU2021403582 A AU 2021403582A AU 2021403582 A1 AU2021403582 A1 AU 2021403582A1
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- Australia
- Prior art keywords
- textile fabric
- polymer blend
- polyethylene
- coating
- support layer
- 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.)
- Pending
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- 239000004753 textile Substances 0.000 title claims abstract description 113
- 238000000576 coating method Methods 0.000 title claims abstract description 108
- 239000011248 coating agent Substances 0.000 title claims abstract description 103
- 229920002959 polymer blend Polymers 0.000 claims abstract description 55
- 239000004698 Polyethylene Substances 0.000 claims abstract description 51
- 229920000573 polyethylene Polymers 0.000 claims abstract description 50
- -1 polyethylene Polymers 0.000 claims abstract description 39
- 239000000203 mixture Substances 0.000 claims abstract description 16
- 229920000728 polyester Polymers 0.000 claims abstract description 13
- 239000004744 fabric Substances 0.000 claims description 104
- 238000003466 welding Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 20
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 14
- 239000004800 polyvinyl chloride Substances 0.000 claims description 14
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 12
- 239000011888 foil Substances 0.000 claims description 11
- 229920002554 vinyl polymer Polymers 0.000 claims description 10
- 239000004922 lacquer Substances 0.000 claims description 8
- 239000000155 melt Substances 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000000835 fiber Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 31
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 239000002759 woven fabric Substances 0.000 description 7
- 239000005038 ethylene vinyl acetate Substances 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000004014 plasticizer Substances 0.000 description 4
- 239000002318 adhesion promoter Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000003851 corona treatment Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 241000845082 Panama Species 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- D06N3/04—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
- D06N3/0002—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
- D06N3/0006—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 woven fabrics
-
- 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
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
-
- 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
- D06N2201/00—Chemical constitution of the fibres, threads or yarns
- D06N2201/02—Synthetic macromolecular fibres
- D06N2201/0254—Polyolefin fibres
-
- 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
- D06N2203/00—Macromolecular materials of the coating layers
- D06N2203/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N2203/042—Polyolefin (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
- D06N2203/00—Macromolecular materials of the coating layers
- D06N2203/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N2203/045—Vinyl (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
- D06N2211/00—Specially adapted uses
- D06N2211/02—Agriculture
-
- 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
-
- 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
- D06N2211/12—Decorative or sun protection articles
- D06N2211/125—Awnings, sunblinds
-
- 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
- D06N2211/12—Decorative or sun protection articles
- D06N2211/16—Geotextiles
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laminated Bodies (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to a flat woven textile structure comprising a support layer, said support layer consisting at least of polyethylene and/or polyester fibers. A surface coating is applied onto at least one of the surfaces of the support layer, wherein the surface coating consists of at least one polymer blend, and the polymer blend has at least one mixture of polyethylene (PE) and polyethylene vinyl acetate (PEVA), the content of polyethylene vinyl acetate in the polymer blend equaling at least 40 wt.%, based on the total weight of the polymer blend. The invention additionally relates to the production of such a flat textile structure, to the use of the flat textile structure, and to a film product made of the flat textile structure.
Description
Description:
The invention relates to a textile fabric with a surface coating.
Coated textiles are generally well known. Polyvinyl chloride (PVC) is often used as
coating material. In the document DE 19926732, for example, a knitted fabric made from
polyester fibres is coated with PVC in a reverse method. Furthermore, it is known from
the document WO 2012/022626 to coat a support material with a coating material made
from a polyolefin-homopolymer or a polyolefin-copolymer. In document CN 110725135,
a textile fabric is disclosed, where a coating made from a combination of polyethylene
and ethylene-vinyl acetate copolymer is used. In the examples of this document, the
content of ethylene-vinyl acetate copolymer is in the range of at most 25 wt.% and the
use of the textile fabric is considered to be primarily in the field of household goods. The
document US 3,660,150 also describes a textile fabric with a surface coating. The surface
coating can also consist of a mixture of polyethylene and ethylene-vinyl acetate
copolymer. WO 2018/104101 also discloses a textile fabric with a support layer made from
polyethylene, for example, wherein the textile fabric has a coating made from a mixture
of polyethylene and polyethylene-vinyl acetate on at least one surface.
The textile fabric of WO 2018/104101 is a fleece that is coated by means of spray
impregnation and is used in wheel housings of automobiles for noise suppression, but at
the same time shows good dirt and ice resistance.
A disadvantage of the known coated textiles is that toxic decomposition products
are often produced when the textiles are incinerated or disposed of as waste if, for
example, polyvinyl chloride (PVC) is used as coating material. The disadvantage of using
polyolefins as a coating material is that the methods for further processing of such coated
textiles (for example the lacquering or the provision of finished products) are often very
complex.
It was therefore the object of the present invention to provide a coated textile
fabric that has at least better environmental compatibility of the coating and that is
nevertheless easy processable and well adaptable to different uses.
The object is achieved by a textile fabric with a woven support layer, wherein the
support layer consists of at least polyethylene and/or polyester fibres. A surface coating
is applied onto at least one of the surfaces of the support layer, wherein the surface
coating consists of at least one polymer blend, wherein the polymer blend has at least one mixture of polyethylene (PE) and polyethylene-vinyl acetate (PEVA). The content of
polyethylene-vinyl acetate in the polymer blend is at least 40 wt.%, based on the total
weight of the polymer blend. By using a polyethylene-vinyl acetate with the indicated
content by weight in the coating material, the coating material has surprising new
properties which a pure PE coating material or a polymer blend with less polyethylene
vinyl acetate in the polymer blend does not have. For example, the textile fabric of the
present invention can be further processed with lacquers that would not or only poorly
adhere to a pure PE coating. Moreover, the textile fabric according to the invention has a
surface coating that is more weather-resistant than PVC coatings and also emits fewer
pollutants. Furthermore, particularly advantageously, a textile fabric with the described
content of polyethylene-vinyl acetate can be further processed by means of high
frequency welding, as a result of which the textile fabric can be further processed more
easily and new uses for the textile fabric are also possible. Moreover, the surface of the woven support layer coated in this way has a very
smooth surface, so that it is printable in a simple and diverse manner. Therefore, the
textile fabric according to the invention is particularly suitable for use, for example, as a
tarpaulin or cover for trucks or as woven fabrics of any kind.
A surface coating consisting of at least one polymer blend should be understood to
mean that the surface coating consists entirely of the polymer blend or consists
predominantly of the polymer blend.
In one embodiment, the surface coating consists of more than 70 wt.%, more than
80 wt.%, more than 90 wt.% or 100 wt.% of the polymer blend, based on the total weight
of the surface coating.
In the present invention, polyethylene-vinyl acetate is abbreviated as PEVA,
polyethylene as PE, and vinyl acetate as VA. The abbreviation PVC is used for polyvinyl
chloride.
In one embodiment, the polymer blend has a content of PEVA in the polymer blend
of 45 wt.%, preferably 49 wt.%, more preferably 50 wt.% and further preferably 55 wt.%
and even further preferably 60 wt.%, based on the total weight of the polymer blend.
In one embodiment of the textile fabric, the polyethylene-vinyl acetate in the
polymer blend has a vinyl acetate (VA) content of 5-50 wt.%, preferably 10-40 wt.%, more
preferably 15 to 30 wt.%, even more preferably 20 to 25 wt.%, based on the weight in the
polymer blend. Advantageously, the textile fabric can be processed by means of high frequency welding from a content of vinyl acetate of about 10 wt.% (based on the total
weight of the polymer blend), which is also not possible with a pure PE coating. As a result,
several options are available for the further processing of the textile fabric, which then
ultimately also expand the field of use of the textile fabric. Moreover, the content of about
10 wt.% of vinyl acetate in the polymer blend gives the surface coating or the textile fabric
a flexibility and softness such as can be found, for example, in soft polyvinyl chloride. In
one embodiment, the polyethylene-vinyl acetate in the polymer blend has a vinyl acetate
content of 15 wt.% to more than 40 wt.%, based on the total weight of the polyethylene
vinyl acetate. In one embodiment with more than 40 wt.% of vinyl acetate, the PEVA
material in the polymer blend becomes rubbery, as a result of which a use in the field of
bags, foils or shoe manufacture (in particular soles), for example, is made possible.
In one embodiment, the polymer blend also has polypropylene in addition to the
PEVA and the PE. The polymer blend has a mixture of polyethylene and polyethylene-vinyl acetate,
wherein the mixture makes it possible to achieve certain properties in terms of the
processability of the coating. The polyethylene has a melting point of 135-145°C, which
means that it can be easily processed on melt calender systems. Polyethylene-vinyl
acetate has a variable melting point that depends on the vinyl acetate content. A content
of about 7 wt.% of vinyl acetate in the polyethylene-vinyl acetate, for example, results in
a melting point of about 104°C and a content of 28 wt.% of vinyl acetate results in a
melting point of about 70°C. By using a mixture of PE and PEVA in the above-mentioned
ranges a processing on common calender systems and a prior extrusion step can be
realized. It would probably be difficult to process pure PEVA on conventional calender
systems.
By adding PEVA to PE, mixing properties of both polymers can be obtained, such as
high-frequency weldability or improved weathering stability and a lower tendency for
forming stress cracks by the PEVA. PE itself has good chemical resistance.
As described, the textile fabric and the surface coating of the textile fabric,
respectively, can advantageously be heated by means of high-frequency energy in the form of an electromagnetic field (high-frequency welding). Under the heat and pressure, the surface coating of the textile fabric begins to melt and can thus be joined together with other parts of the textile fabric, with other textile fabrics of the same or different type (fusible) or with completely different materials (such as a coating of PE Material). In this process, no heat is supplied from the outside, which means that fewer protective measures for occupational safety are required. The heat is generated in the textile fabric and in the surface coating of the textile fabric, respectively, and is therefore particularly effective. During the cooling process (for example, under constant pressure), a fusing of the different materials with one another occurs and a weld seam is formed. A very strong connection can be brought about in this way, which also does not impair the weather resistance, for example, the water impermeability, of the textile fabric. Another advantage of this type of connection of the textile fabric is that the process described does not produce a large amount of harmful vapours or combustion residues over a large area. Depending on the fibres used in the support layer, the high-frequency welding can also cause the fibres of the support layer to melt completely or at least partially. Partially melted or completely melted fibres within the seam can give the seam a certain stability which, for example, facilitates the shaping of the textile fabric. The textile fabric can also advantageously be connected to other materials by means of other (conventional) welding processes. For example, the textile fabric can be connected to other textile fabrics with a coating of polyethylene and/or polypropylene by means of hot-air welding. When the textile fabric was hot-air welded to another textile fabric with a polyethylene coating, an adhesion value of more than about 50 N/cm could be measured without edge waviness. When the textile fabric was hot-air welded to another textile fabric with a polypropylene coating, an adhesion value of more than about
50 N/cm could also be measured without edge waviness. In all cases, the adhesion value
is determined using the standard ISO 2411:2017 (EN ISO 2411:2017), wherein the second
method of sample preparation of the standard is to be used and the values that are
measured in the machine direction (i.e., in warp direction) are to be applied to the
measurement of test specimens.
In one embodiment of the invention, the support layer is constructed entirely from
fibres made from polyethylene and/or polyester. In a preferred embodiment, the support
layer is constructed entirely from polyester fibres. Entirely constructed means that the
support layer is constructed from more than 80%, preferably more than 90% and most preferably 100% of the fibres mentioned. In the case of a combination of polyethylene and polyester, the support layer is preferably constructed from a yarn mixture of fibres made from polyethylene and polyester. For example, high-strength polyethylene fibres such as those available under the trade names Dyneema (Fa. DSM B.V.) or Spectra (Fa. Honeywell International) can be used as polyethylene fibres. Diolen©, Fa. Polyester High
Performance Fibres, for example, can be used as polyester fibres. A support layer
constructed from the fibres mentioned or a mixture of the fibres mentioned has the
advantage that the support layer is easy to manufacture and becomes adaptable to
various technical requirements, such as strength of the support layer, due to the wide
selection of possible fibre types.
The term fibre should be understood to mean both endless fibres and staple fibres
or short fibres. The fibres can belong both to a multifilament yarn and to a monofilament
yarn.
In one embodiment, the polymer blend of the surface coating has less than 51 wt.%
polyethylene, based on the total weight of the polymer blend. In one embodiment, the
polymer blend consists of at least 95 wt.% of a combination of polyethylene and
polyethylene-vinyl acetate, based on the total weight of the polymer blend. The surface coating preferably has less than 20 wt.%, more preferably less than 15 wt.%, even more
preferably less than 10 wt.% and most preferably less than 5 wt.% of other components
such as additives - in addition to the polymer blend. Such a surface coating has the
advantage that the mentioned mixture of PE and PEVA combines both advantages of the
mentioned substances without the disadvantages of the respective substances adversely
affecting the surface coating. For example, the surface coating has good long-term
stability due to the PE contained therein. PEVA is particularly robust and thus increases
the longevity of a surface coating, especially with regard to mechanical effects on the
surface coating. Furthermore, the PEVA forms the basis for the textile fabric becoming
processable by means of high-frequency welding and improves the ability of the surface
coating to be lacquered. Moreover, plasticizers or substances containing halogens can be
dispensed with in such a surface coating made from the mentioned combination of PE
and PEVA, which prevents the risk that chemicals containing halogens or plasticizer
components can diffuse to the surface of the surface coating and there engage in
undesirable interactions with, for example, a lacquering. This makes the textile fabric
more environmentally friendly and its chemical properties remain constantly stable even over a longer life cycle of the textile fabric. A further advantage of choosing the polymer blend for the surface coating is that the textile fabric is due to the omission of the plasticizer more skin-friendly than, for example, textile fabrics with PVC coatings with plasticizer. In particular, this simplifies the processing of such skin-friendly textile fabrics for manufacturers, for example, and the textile fabric can also be provided for new uses in which, for example, regular skin contact with the textile fabric can occur.
In embodiments of the textile fabric, the support layer is a woven fabric or a twisted
woven fabric (Gedrebe). The support layer is most preferably a woven fabric which has a
twill, plain, panama or satin weave. The support material can be single-layered or multi
layered, wherein the support layer is able to have the aforementioned bonds single
layered or multi-layered. For example, the support layer can be constructed multi-layered
and consist of at least two woven fabric layers or of one woven fabric layer and one
twisted woven fabric layer.
In one embodiment, the surface coating on the at least one surface of the support
layer is applied over the entire surface. Over the entire surface means here that there are
essentially no longer any areas of the support layer surface without coating material after
the coating of this surface. When using, for example, a very open grid as the support layer, a coating applied over the entire surface can also mean that although the grid does not
have any areas without coating on the surface to be coated, gaps between the grids
remain free. Neither material of the support layer nor material of the coating is present
within the gaps. The textile fabric is preferably coated on both surface sides of the support
layer over the entire surface. Particularly preferred, the coating of the two surface sides
of the support layer is done with the same surface coating. However, a coating with
different surface coating materials for various surface sides is also conceivable. In one
embodiment, bars made from coating material are formed within the support layer by
coating both surfaces, wherein the bars connect the two surface coatings to one another.
In another embodiment of the textile fabric, no or only a small number of bars made from
coating material form within the support layer, wherein the bars result in no or only a
small number of connections between the two surface coatings of the support layer.
In one embodiment, the coating of the support layer with the polymer blend is done
integrally. Here, integrally means that the coating material (polymer blend) is applied onto
the support material essentially as a coherent coating mass, for example, as a melt or foil,
and not, for example, as spray particles, which then form a coating of the entire surface, for example. The advantage of an integral coating is that the surface of the coating is particularly flat and, as a result, the surface quality is high, for example. Thus, later printability with better quality is then also possible, for example.
In a further preferred embodiment, the polymer blend of the surface coating is polyvinyl chloride-free. In this context, polyvinyl chloride-free means that the polymer
blend has less than 1 wt.%, most preferably 0 wt.% polyvinyl chloride, based on the total
weight of the polymer blend. In a further preferred embodiment, the surface coating is
polyvinyl chloride-free, which is also intended to mean here that the surface coating
contains less than 1 wt.%, most preferably 0 wt.% polyvinyl chloride, based on the total
weight of the surface coating. In this case, neither the polymer blend nor the surface
coating has polyvinyl chloride - as a further component in addition to the polymer blend.
Without the use of polyvinyl chloride, both the manufacture and the recycling of the
textile fabric are significantly more environmentally friendly and the skin-friendliness of
the textile fabric is also increased. For example, the highly toxic gas vinyl chloride is not
used in the production of PE and PEVA.
In one exemplary embodiment, the adhesion value for the welding of at least two
textile fabrics (according to claim 1) to one another by means of high-frequency welding is at least 8 N/cm. Preferably, the adhesion value for the welding of at least two textile
fabrics to one another by means of high-frequency welding is about 12 N/cm, preferably
about 15 N/cm, preferably about 20 N/cm, more preferably about 25 N/cm, even more
preferably about 30 N/cm, most preferably about 60 N/cm and most preferably about 70
N/cm. The adhesion value is determined using the standard ISO 2411:2017 (EN ISO
2411:2017), wherein the second method of sample preparation of the standard is to be
used and the values that are measured in the machine direction (i.e., in warp direction)
are to be applied to the measurement of test specimens.
A further object of the invention relates to a method for manufacturing the textile
fabric, wherein the textile fabric has the features as described above. In the method, a
support layer, which has at least polyethylene and/or polyester fibres, is coated with a
surface coating by means of a melt calender on at least one surface of the support layer.
For coating the surface, a surface coating is selected that consists of at least one polymer
blend, wherein the polymer blend has at least one mixture of polyethylene and
polyethylene-vinyl acetate. The polymer blend has more than 40 wt.% polyethylene-vinyl
acetate, based on the total weight of the polymer blend. It goes without saying that the surface coating is present as a melt during manufacture and is processed as a homogeneous layer in a correspondingly flowable manner (there is therefore no foil of surface coating material that is laminated on by means of a roller and no spray coating by means of matrix droplets or powders). Preferably, one surface of the support layer but most preferably both surfaces of the support layer are coated with the surface coating as described above.
During the manufacture of the textile fabric, the support layer is preferably coated
over a width of more than three meters on the upper side of the support layer by means
of the melt calender in a single process step. As a result, a coating web of surface coating,
which has a width of at least three meters, is formed on the support layer in a single
coating operation. In this way, larger textile fabrics, which have a continuous web of
coating material, can also be manufactured in an advantageous manner. Advantageously,
overlapping areas of coating material do not form in this case, or less frequently in the
case of a width of more than three meters. In an advantageous manner, the printability
of the textile fabric is thus again improved, since not only does the woven support layer
enable an even coating, but the coating itself also enables a special surface quality.
A further object of the present invention relates to the use of the textile fabric, manufactured as described above and having the features as described above. The textile
fabric can be further processed for shaping and fixing by means of high-frequency
welding. For example, a truck tarpaulin, a bag, a container or the like can be manufactured
from the textile fabric, which is preferably present as web material, by means of high
frequency welding. The textile fabric is preferably formed and/or fixed exclusively by
means of high-frequency welding. Of course, the textile fabric can also be processed using
alternative welding methods, such as by means of hot air. Advantageously, when using
alternative welding methods (unlike during the processing of textiles with PVC in the
coating), no toxic fumes are produced during welding, so that less strict occupational
safety measures have to be taken into account during processing.
The surface coating of the textile fabric, with the features as described above, can
be lacquered, for example, in which case a polyvinyl chloride-free lacquer or a polyvinyl
chloride-containing lacquer can preferably be used. Although the surface coating of the
textile fabric contains a not inconsiderable content of PE, it is surprisingly possible to coat
or paint the surface coating (and thus the textile fabric) with a PVC-free lacquer or with a
polyvinyl chloride-containing lacquer. In the case of surface coatings without an EVA content, this is not possible or only possible with difficulties, or is only possible by using a larger quantity of additional adhesion promoters or, for example, only after pre treatments (e.g., corona treatments) of the surface before coating. For special lacquers, however, the use of adhesion promoters is still possible and a corona treatment can also be performed if this is desired. Furthermore, the preparation of the textile fabric before lacquering appears to be shortened or simplified. The use of a smaller amount of adhesion promoter can also be considered advantageous.
The textile fabric - with the features already mentioned and manufactured as
already described - can be used, for example, as a vehicle tarpaulin, most preferably as a
truck tarpaulin, as a packaging tarpaulin, as a tend tarpaulin cloth, as an inflatable boat,
as a container, preferably as a flexible container, or as a bag.
The textile fabric can be used, for example, in the fields of architecture, advertising,
visual protection, sheathing and/or temporary weather protection. The possible uses of
the textile fabric are particularly wide since the textile fabric is particularly easy to process
and the environmental compatibility is particularly high. For example, the textile fabric
can also be used in the food sector as, for example, food packaging or food storage
containers. Here, it is particularly important that the packaging material does not release any harmful substances into the food. Nevertheless, the packaging must protect the food
from loss of flavour or prevent damage during transport. The use of the textile fabric in
the field of medical technology, for example, as part of a moisture-repellent mattress
cover, is also conceivable due to the improved skin-friendliness.
Yet another object of the present invention relates to a foil product manufactured
at least in part from the textile fabric. The foil product has at least one weld seam that
was manufactured by high-frequency welding and that is located in the area of the textile
fabric in the foil product. Preferably, the foil product consists entirely of the textile fabric.
A foil product should be understood to mean any structure that consists of at least a
flexible and thin-walled material. The foil product can have a two- or three-dimensional
shape.
The invention will be explained in more detail with reference to the following
figures.
Figures 1, 2 as well as 3 a) and 3 b) each show photographs of textile fabrics,
wherein sample 1 was coated with a pure PE-polymer blend and sample 2 was coated
with a polymer blend made from a mixture of polyethylene and ethylene-vinyl acetate copolymer according to Claim 1. Figures 4a and 4b each show photographs of a sample 3 and a sample 4, wherein in sample 3 a textile fabric with a coating according to claim 1 and another textile fabric with a coating made from polypropylene were welded by means of hot air and wherein sample 4 shows a hot air welding of a textile fabric according to claim 1 with another textile fabric with a coating of polyethylene.
Figure 1 shows both samples 1 and 2, wherein the support material was a textile
fabric in both cases. As a result of the use of the woven support layer, it can be seen clearly
in figure 1 that after the coating a flat, homogeneous surface was formed, which can be
printed well, for example.
In figure 2, two identical sample pieces (i.e., samples made from the same material)
were placed one on top of one another and processed by means of thermal stress (hot
air). It can be clearly seen that in sample 1 as well as in sample 2 the coating material
melted locally and bonded together to form a seam. Figure 2 thus clearly shows that both
samples 1 and 2 can be thermally welded. As a result of the welding, adhesion values can
advantageously be achieved at least between the textiles in the range from 8 to 70 N/cm,
preferably from 12-60 N/cm, most preferably from 15-40 N/cm and even more preferably
from 20 to 25 N/cm. The adhesion value is determined using the standard ISO 2411:2017 (EN ISO 2411:2017), wherein the second method of sample preparation of the standard
is to be used and the values that are measured in the machine direction (i.e., in warp
direction) are to be applied to the measurement of test specimens.
In figure 3a and figure 3b, two identical sample pieces were placed one on top of
one another and processed by means of high-frequency welding. In both figures it can be
clearly seen that only in sample 2 the coating material melted locally and connected with
on another to form a seam. In sample 1, no such connection occurred, so that a cohesion
of the two sample 1 pieces cannot be determined. The difference in sample 1 and sample
2 is that the pure PE compound (sample 1) can be thermally welded (e.g., by means of hot
air welding), just like the PE/EVA as sample 2, but only sample 2 can also be processed by
means of high-frequency.
In figure 4a, a sample 3 was formed from a textile fabric according to claim 1 and
another textile fabric with a coating made from polypropylene. By means of hot-air
welding, an adhesion value of more than 50 N/cm could be achieved without edge
waviness. In figure 4b, a sample was formed from a textile fabric according to claim 1 and
another textile fabric with a coating made from polyethylene. Here, too, in connection with the textile fabric according to the invention, a connection could be achieved by hot air welding, which has an adhesion value of at least 50 N/cm without producing edge waviness. Here, too, the adhesion value is determined using the standard ISO 2411:2017
(EN ISO 2411:2017), wherein the second method of sample preparation in the standard should be used and the values that are measured in the machine direction (i.e., in warp
direction) are to be applied to the measurement of test specimens.
Claims (14)
1. Textile fabric, wherein the textile fabric has a woven support layer that consists of
at least polyethylene and/or polyester fibres, wherein a surface coating is applied onto at least one surface of the support layer and the surface coating consists of at least one
polymer blend, wherein the polymer blend has at least one mixture of polyethylene and
polyethylene-vinyl acetate, characterized in that the polymer blend has more than 40
wt.% of polyethylene-vinyl acetate, based on the total weight of the polymer blend.
2. Textile fabric according to claim 1, wherein the polyethylene-vinyl acetate in the
polymer blend contains a vinyl acetate content of 10-40 wt.%, based on the weight in the
polymer blend.
3. Textile fabric according to at least one of the preceding claims, wherein the polymer
blend has less than 51 wt.% polyethylene, based on the total weight of the polymer blend.
4. Textile fabric according to at least one of the preceding claims, wherein the support layer is constructed entirely from fibres made from polyethylene and/or polyester.
5. Textile fabric according to at least one of the preceding claims, wherein the surface
coating on the at least one surface of the support layer is applied over the entire surface.
6. Textile fabric according to at least one of the preceding claims, wherein the polymer
blend is polyvinyl chloride-free.
7. Method for coating a textile fabric constructed according to claims 1 to 6, wherein
a support layer consisting of at least polyethylene and/or polyester fibres is coated with
a surface coating by means of a melt calender on at least one surface of the support layer,
wherein the surface coating consists of a polymer blend, wherein the polymer blend has
at least one mixture of polyethylene and polyethylene-vinyl acetate, characterized in that
the polymer blend has more than 40 wt.% of polyethylene-vinyl acetate, based on the
total weight of the polymer blend.
8. Method for coating of a textile fabric constructed according to claim 7, wherein the
support layer is coated over a width of more than 3 m over the entire surface in one
process step.
9. Use of a textile fabric constructed and manufactured according to claims 1 to 8, for
shaping and fixing by means of high-frequency welding.
10. Use of a textile fabric constructed and manufactured according to claims 1 to 8, for
lacquering the coated surface with a polyvinyl chloride-free lacquer or a polyvinyl
chloride-containing lacquer.
11. Use of the textile fabric constructed and manufactured according to claims 1 to 8
as a vehicle tarpaulin.
12. Use of the textile fabric constructed and manufactured according to claims 1 to 8
as packaging tarpaulin, tend tarpaulin cloth, inflatable boats, flexible containers, or bag.
13. Use of the textile fabric constructed and manufactured according to claims 1 to 8
in the fields of architecture, advertising, visual protection, sheathing and/or temporary
weather protection.
14. Foil product manufactured from a textile fabric according to claims 1 to 6, wherein
the foil product has at least one weld seam formed by high-frequency welding.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20215027 | 2020-12-17 | ||
EP20215027.2 | 2020-12-17 | ||
PCT/EP2021/085877 WO2022129163A1 (en) | 2020-12-17 | 2021-12-15 | Flat textile structure with coating |
Publications (1)
Publication Number | Publication Date |
---|---|
AU2021403582A1 true AU2021403582A1 (en) | 2023-06-29 |
Family
ID=73855350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2021403582A Pending AU2021403582A1 (en) | 2020-12-17 | 2021-12-15 | Flat textile structure with coating |
Country Status (6)
Country | Link |
---|---|
US (1) | US20240093427A1 (en) |
EP (1) | EP4263930A1 (en) |
CN (1) | CN116745486A (en) |
AU (1) | AU2021403582A1 (en) |
CA (1) | CA3200901A1 (en) |
WO (1) | WO2022129163A1 (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IE34174B1 (en) | 1969-06-02 | 1975-02-19 | Ici Ltd | Coated woven materials |
DE19926732A1 (en) | 1999-06-11 | 2000-12-14 | Gerhard Beck | Production of air-permeable, PVC-coated woven plastic fabric, e.g. for car seat covers, carpet underlay or filters, involves coating with predried PVC paste, stretching the fabric and gelling the PVC |
AU2003214661A1 (en) * | 2003-03-03 | 2004-09-28 | Young-Sang Ki | Olefinic tarpaulin and method for preparing the same |
EP2605908B1 (en) | 2010-08-17 | 2020-11-11 | Low & Bonar Gmbh | Composite material with coating material |
CN110049902A (en) | 2016-12-08 | 2019-07-23 | 欧拓管理公司 | Surface applicator for external decorating member |
KR20200125829A (en) * | 2019-04-25 | 2020-11-05 | 주식회사 신양 | Fabric tape and preparing method thereof |
CN110725135B (en) | 2019-11-26 | 2020-12-11 | 杭州盛得新材料有限公司 | Composite polymer coating fabric and its making method |
-
2021
- 2021-12-15 US US18/265,607 patent/US20240093427A1/en active Pending
- 2021-12-15 CA CA3200901A patent/CA3200901A1/en active Pending
- 2021-12-15 EP EP21831036.5A patent/EP4263930A1/en active Pending
- 2021-12-15 CN CN202180081719.0A patent/CN116745486A/en active Pending
- 2021-12-15 AU AU2021403582A patent/AU2021403582A1/en active Pending
- 2021-12-15 WO PCT/EP2021/085877 patent/WO2022129163A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2022129163A1 (en) | 2022-06-23 |
US20240093427A1 (en) | 2024-03-21 |
CN116745486A (en) | 2023-09-12 |
EP4263930A1 (en) | 2023-10-25 |
CA3200901A1 (en) | 2022-06-23 |
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