EP1828457A1

EP1828457A1 - Folding knitted textile material

Info

Publication number: EP1828457A1
Application number: EP05823650A
Authority: EP
Inventors: Walter Schalko
Original assignee: EYBL INTERNAT AG; EYBL International AG
Current assignee: Prevent Austria GmbH
Priority date: 2004-12-13
Filing date: 2005-12-13
Publication date: 2007-09-05
Anticipated expiration: 2025-12-13
Also published as: AT501362A1; EP1828457B1; WO2006063772A1; AT501362B1; ES2375145T3

Abstract

The invention relates to folding textile sheets, in particular, knitted ware, whereby the textile sheets comprise sequential reinforced and non-reinforced sections, characterised in that differing stiffnesses for the textile sheets and hence the desired folding property may be achieved by means of alternating or patterned material application to the textile sheet and subsequent whole-sheet treatment, such as thermal or chemical treatment or irradiation.

Description

Foldable textile knitted fabric

The invention relates to foldable textile surfaces, in particular knitted fabric, wherein the textile surfaces have successive, stiffened and non-stiffened sections.

Check foldable textiles e.g. for use as sunscreen, room divider, wind deflector or the like are known per se. In general, such used textile surfaces should not constitute permanent facilities, but be curled or foldable in any way. This is achieved in that the textiles are either coated and / or the sheet is preformed or damaged thermally, chemically and / or mechanically at the kinks. However, this requires complex processes and causes a reduction in the durability of the textile surface, especially at the machined places.

Furthermore, the attachment of Faltleisten of wood, plastic or the like for improving the Faltbarkeit the textile surfaces is known. Disadvantage of this system is the complex design compared to the present invention and the relative unwieldiness.

For example, DE 4 419 410 A1 shows a foldable and / or rollable web with hose-like pockets for stiffening elements running parallel to one another in one direction of extension, which has a coating on at least one of its sides. However, this coating only serves to reduce the light transmission, as well as the flammability of the web. The stiffeners must be introduced in a further step in the pockets.

Also DE 2 960 9273 U1 shows a folding blind with a subdivided by horizontal strips in boxes fabric. Mechanically even more complicated is the use of folding mechanisms and rolling spring boxes and the like. These basically consist of threaded lamellae, which are held in position in different ways, eg by a string, rings or rods, or stiffened, windable textiles, which are moved by mechanisms such as roller-spring boxes. Both systems are very complex in terms of their mechanics and prone to error in terms of their function, since often mechanically very exact processes for the function are required.

Furthermore, it is also known to weave textiles in sections with different densities to achieve better foldability. This brings a number of disadvantages. Thus, the fabric is less tear and abrasion resistant in the less densely woven areas and visually appears as a texti! not even.

It is therefore an object of the present invention to provide textile surfaces, preferably knitwear or the like, in a particular form, i. to make foldable at predefined locations through the formation of stiffened and non-stiffened sections, without disturbing the homogeneity of the fabric, without making the textile surface weaker at the predefined folds and without using external aids such as folding strips or folding mechanisms. Furthermore, it is an object of the invention to achieve the formation of the stiffened and non-stiffened sections by a full-surface processing of the textile surface.

This is inventively achieved in that by varying or patterned material use in the textile surface and subsequent full-surface processing, such as by thermal or chemical treatment or by irradiation, different stiffness of the textile surface and thus the specific foldability is given.

A feature of the invention is that the stiffened portions are formed of a first yarn which is hardened after full-surface processing and in that the non-stiffened portions are formed of a second yarn which, after full-surface processing, is unchanged or softer than the stiffened portion is. This can be used to produce a textile surface that can be used as a sun visor, room divider, Wind deflector or the like is used. Elaborate mounting and fixing elements to hold the individual slats in position are not required. This function is fulfilled in the textile by the soft elements.

Another feature of the invention is that the first and second yarns consist of thermoplastic yarn materials having different softening and melting temperatures, wherein the softening and melting temperature of the thermoplastic yarn material for the non-stiffened portions is higher than the softening and melting temperature of the thermoplastic yarn material for the stiffened sections.

In the subsequent full-scale processing of the textile surface of the invention, the surface is thermally treated at a temperature above the softening and melting temperature of the thermoplastic yarn materials of the stiffened portions and below the melting temperature of the thermoplastic gamma materials of the non-stiffened portions.

Preferably, a textile surface according to the invention have the feature that the material of the stiffened portions consists wholly or proportionately of a yarn, preferably polypropylene having a softening temperature between 120 ⁰ C to 150 ⁰ C and a melting temperature between 15O ⁰ C to 190 ⁰ C, and in that the material of the non-stiffened sections consists entirely or proportionately of a yarn, preferably polyethylene terephthalate, having a melting temperature of at least 20 ° C or is infusible. When using these yarn materials for the textile surface according to the invention, the full-surface processing is preferably carried out by thermal treatment for 30 to 90 seconds at a temperature between 12O ⁰ C to 190 ° C.

Another inventive feature of such textile surfaces is that the thermally less sensitive areas are formed as kinks.

In one possible embodiment of the textile surfaces according to the invention, the stiffened sections are alternately stiffened with strip-shaped parallel stiffeners. - A - th sections arranged. Furthermore, it is an inventive feature that the non-stiffened portions are made narrow in relation to the stiffened portions in the form of a hinge line. The course of these hinge lines can be designed in different shapes, strengths and directions, which also complex geometric figures can be displayed.

Furthermore, it is a feature of the invention that the stiffened portions and the non-stiffened portions may be formed with different stitch formations according to their function, the non-stiffened portions are formed in the arrangement and geometry of the mesh heads and mesh feet for a possible unhindered kink.

A further embodiment of the textile surface according to the invention is that it consists of a uniform base fabric or knitted fabric and the stiffened portions are provided with a curable coating and subjected to a subsequent hardening treatment.

Furthermore, the invention relates to a process for the production of textile surfaces, which comprises the following steps:

^■ The production of a textile surface with alternating or patterned sections with yarn materials of different properties in terms of full-surface processing.

^■ The full-surface treatment of the textile surface, for example by thermal or chemical treatment or by irradiation, to ensure different stiffness of the textile surface and thus the specific foldability.

Such an inventive method for manufacturing textile surfaces may have a feature that thermoplastic as yarn materials yarn materials, preferably polypropylene having a softening temperature between 120 ⁰ C to 150 ⁰ C and a melting temperature between 150 ⁰ C to 190 ° C, and Polyethylenterephta- lat with a Melting temperature of at least 200 ⁰ C can be used. In the second Step of such a method, the textile surface is processed by thermal treatment for preferably 30 to 90 seconds at a temperature between 120 ⁰ C to 190 ⁰ C over the entire surface.

Further advantageous features of the invention are described in the description, the claims and the drawings. The invention will be described in more detail with reference to some embodiments and the drawings.

Fig. 1 shows a detailed view of a knit fabric of two different yarn materials. Fig. 2 shows a partial plan view of a textile surface with stiffened and non-stiffened sections arranged alternately in parallel. Fig. 3 shows an alternative embodiment of a textile surface with stiffened and non-stiffened portions.

Fig. 1 shows a section of a knitted fabric 5, wherein the transition between stiffenable yarn material 2 and non-stiffenable yarn material 1 is shown. As can be seen from the figure, the knitted fabric 5 is formed by the continuous meshing of the stitches 3 of the yarn materials 1, 2. The design of the stiffenable and non-stiffenable sections is characterized here only by the use or by the proportion of the different yarn materials 1, 2. The non-stiffenable sections are dimensioned according to their later function, preferably, as shown here, for a 180 ° bend at least two successive rows of stitches 3 of non-stiffenable yarn material 1 incorporated. The resistant hinge function of the hinge line 4 thus formed is realized primarily by the arrangement and geometry of the mesh heads 6 and mesh feet 7, which are engaged with each other and have corresponding freedom of movement. After the production of such a knitted fabric 5, the textile surface is processed over the entire surface in the subsequent step. In the event that it is the stiffenable yarn material 2 to polypropylene having a softening temperature of 130 ° C to 14O ⁰ C and a melting temperature of 16O ⁰ C to 175 ⁰ C and the stiffenable Garnmaterial to polyethylene terephthalate having a melting temperature of 250 ° C to 26O ⁰ C is the textile surface over the entire surface, for example, by means of infrared radiator thermally treated with a Temperature of 120 ⁰ C to 190 ⁰ C and an exposure time of 10 to 300 seconds, preferably 30 to 90 seconds. As a result, the low-melting yarn material 2 is brought above the softening temperature and a superficial melting of the fiber is achieved, resulting in a stiffening in this area. In the case of polypropylene, targeted surface hardening takes place without decisively altering the polyethylene terephthalate in its mechanical properties.

Alternatively, appropriately coated textile can also be treated with other types of radiation such as light, laser, UV radiation, electron radiation, microwave, etc. Depending on the type of radiation, a considerably shorter irradiation time of, for example, 0.1 to 30 seconds is possible.

Fig. 2 shows a textile surface with alternately parallel sections of stiffened yarn material 2 and hinge lines 4 of non-stiffened yarn material 1. As can be seen from the figure, the textile surface can be bent at the hinge lines 4 by 180 °, whereby the surface is collapsible.

FIG. 3 shows an alternative embodiment in which the sections of stiffenable yarn material 2 and the hinge lines 4 of non-stiffenable yarn material 1 are fan-shaped.

1 non-stiffenable yarn material

2 stiffenable yarn material

3 stitches

4 hinge line

5 knitwear

6 mesh head

7 mesh feet

Claims

claims

1. Foldable textile surfaces, in particular knitted fabric, wherein the textile surfaces have successive, stiffened and non-stiffened portions, characterized in that by alternating or patterned material use in the textile surface and subsequent full-surface processing, such as by thermal or chemical treatment or by Irradiation, different stiffness of the textile surface and thus the specific foldability is given.

2. Textile surfaces according to claim 1, characterized in that the stiffened portions of a first yarn (2) are formed, which is cured after full-surface processing and that the non-stiffened portions of a second yarn (1) are formed, which after the full-surface machining is unchanged or softer than the stiffened section.

3. Textile surfaces according to claim 1 or 2, characterized in that the first and second yarns (1,2) consist of thermoplastic yarn materials having different softening and melting temperatures.

4. Textile surfaces according to claim 3, characterized in that the softening and melting temperature of the thermoplastic yarn material (1) for the non-stiffened portions is higher than the softening and melting temperature of the thermoplastic yarn material (2) for the stiffened portions.

Textile surfaces according to any one of claims 1 to 4, characterized in that they undergo full-surface processing by thermal treatment at a temperature above the softening or melting temperature of the thermoplastic yarn materials (2) of the stiffened portions and below the melting temperature of the thermoplastic yarn materials (1) which is not stiffened sections, is subjected.

6. Textile surfaces according to one of claims 1 to 5, characterized in that the material (2) of the stiffened portions completely or partially from a yarn, preferably polypropylene having a softening temperature between 12O ⁰ C - 15O ⁰ C and a melting temperature between 150 ° C - 19O ⁰ C exists.

7. Textile surfaces according to one of claims 1 to 6, characterized in that the material (1) of the non-stiffened portions consists wholly or proportionately of a yarn, preferably polyethylene terephthalate, with a melting temperature of at least 200 ⁰ C or is infusible.

8. Textile surfaces according to claim 6 or 7, characterized in that they are subjected to a full-surface treatment by thermal treatment for 10 to 300 seconds, preferably 30 to 90 seconds at a temperature between 120 ⁰ C - 190 ⁰ C.

9. Textile surfaces according to one of claims 1 to 8, characterized in that the thermally less sensitive areas are formed as kinks.

10. Textile surfaces according to one of claims 1 to 9, characterized in that the stiffened portions are arranged alternately with strip-shaped parallel non-stiffened sections.

11. Textile surfaces according to one of claims 1 to 10, characterized in that the non-stiffened portions in relation to the stiffened portions are made narrow in the form of a hinge line (4).

12. Textile surfaces according to claim 11, characterized in that the course of the hinge lines (4) is designed in various shapes, strengths and directions, whereby complex geometric figures can be displayed.

13. Textile surfaces according to one of claims 1 to 12, characterized in that the stiffened portions and the non-stiffened portions are formed with different stitch formations according to their functions, wherein the non-stiffened portions in arrangement and geometry of the mesh heads (6) and mesh feet ( 7) are designed for a possible unhindered kink.

14.Textile surfaces according to claim 1, characterized in that they consist of a uniform base fabric or knitted fabric and provided the sections to be stiffened with a curable coating and subjected to a subsequent curing treatment.

15. A process for producing textile surfaces according to one of claims 1 to 13, characterized in that it comprises the following steps:

• Production of a textile surface with alternating or patterned sections with yarn materials (1, 2) of different properties with regard to full-surface processing

• Full-surface treatment of the textile surface, such as by thermal or chemical treatment or by irradiation, to ensure different stiffness of the textile surface and thus the specific foldability.

16. A process for the production of textile surfaces according to claim 15, characterized in that as yarn materials (1, 2) thermoplastic yarn materials, preferably polypropylene having a softening temperature between 120 ⁰ C - 150 ⁰ C and a melting temperature between 150 ° C - 190 ⁰ C, and polyethylene lenterephtalat having a melting temperature of at least 200 ⁰ C are used.

17. A process for producing textile surfaces according to claim 15 or 16, characterized in that the textile surface is processed by thermal treatment for preferably 30 to 90 seconds at a temperature between 12O ⁰ C - 19O ⁰ C, the entire surface.

18. A process for the production of textile surfaces according to claim 14, characterized in that the coating of the textile surface is cured by irradiation, for example with light, laser, UV radiation, electron radiation, microwave, etc. for preferably 0.1 to 90 seconds.