WO2019110875A1

WO2019110875A1 - Fabric

Info

Publication number: WO2019110875A1
Application number: PCT/FI2018/050886
Authority: WO
Inventors: Vesa Tuominen
Original assignee: Oy SDA Finland Ltd
Current assignee: Oy SDA Finland Ltd
Priority date: 2017-12-08
Filing date: 2018-12-07
Publication date: 2019-06-13
Anticipated expiration: 2020-06-08
Also published as: AU2018379542A1; EP3721000B1; CA3084302C; EP3721000A4; CA3084302A1; FI12331U1; KR102486376B1; EP3721000C0; ES3032282T3; US20210002797A1; EP3721000A1; CN111630219A; RU2738929C1; CN119020902A; JP2021505783A; AU2018379542B2; NZ765125A; JP7049454B2; KR20200088895A; US12031246B2

Abstract

The invention relates to a fabric. The fabric (10) comprises, in the fabric material, threads (11a1,12a1;13a1,14a1) of a material conducting electricity well, by means of which electromagnetic radiation and magnetic fields are filtered. The threads (11a1,12a1;13a1,14a1) are placed next to each other. Furthermore, the threads are wound around their winding axes (X1,X2;Y1,Y2) so that the first thread (11a1, 13a1) in the fabric is wound clockwise, and the second thread (12a1, 14a1) next to it is wound counterclockwise.

Description

Fabric

Background of the invention

The invention relates to a fabric.

A fabric structure is known from the inventor’s previous utility model Fl U20100023, which utilizes a separate network structure which is of a material conducting electricity and heat well. By means of the network, electromagnetic radiation is prevented from passing through the fabric. The distance between threads in the network determines the wavelength of electromagnetic radiation that is not allowed to pass through the network structure of the fabric. The net- work acts as a filter.

Summary of the invention

ln this new application by the inventor, the fabric comprises a network of electrically conducting, wound, that is, twined thread, which prevents, if the fabric is a piece of clothing, electromagnetic radiation and magnet fields generat- ed by magnets from passing through the fabric to a user of the item of clothing. This way, a protection is achieved for a person against electromagnetic radiation and against the magnet fields produced by magnets. Therefore, a wound network structure of a fabric, formed of graphite thread, for example, acts as a filter of electromagnetic radiations preventing electromagnetic radiation higher than a certain wavelength from passing through the fabric, such as a bed-sheet, to a sleeping person. A wound network also prevents the magnetic field of a magnet from passing through a fabric, such as a piece of clothing, to a person using the fabric.

The thread material of the network also conducts heat well, so by means of the network, in case of a bed-sheet, a sleeping person’s heat remaining comfortably low within the sheet is promoted to achieve a good night’s sleep.

The electromagnetic radiation is transformed into heat in electrically conducting threads, and the temperature of the fabric increases by several de grees. A piece of health clothing may be produced from the fabric. The person us- ing the piece of clothing stays warm even with less clothes on.

The distance between the threads of the network, that is, grid distance Dl, may be 0.5mm to 50 mm. The threads are of a material that conducts electrici ty well. The threads may be graphite, silver, or copper, for example. The selection of the grid distance Dl determines the wavelength range that cannot pass through the network. Long-term stay in a magnetic field causes health risks. Open wires, power lines, electrical devices create electromagnetic fields that may cause bio logical damages. Moreover, some people are oversensitive to electricity and get a variety of symptoms even when subjected to fields having very low values.

ln this application, a new type of fabric or texture or knitted product or similar has been formed ln the invention, the filtering of electromagnetic fields has been improved even further ln the invention, electromagnetic fields are put out as are magnetic fields generated by magnets both those originating from in side a person as well as those coming from the outside towards a person. This takes place by using a beam thread or weft thread in the fabric, which is of a ma terial conducting electricity well. The thread in question is a part of the base ma terial of the fabric so that it is a structural part of the fabric or knitted fabric, for example a part of the texture structure; filament structure.

The thread conducting electricity well may be formed of one or more strands whereby one strand is of a material conducting electricity well while the other strands are support strands wound in the same direction as the strand con ducting electricity well.

The thread in question conducting electricity well is wound, so twined/spun into a winding. The first thread is wound clockwise around its wind- ing axis XI, and a second thread of an electrically conductive material next to it is wound counterclockwise around its winding axis X2. The second wound thread of a material conducting electricity well is also wound into a winding and is placed at a distance D1 from the first thread in question. So, adjacent electrically conduc tive threads are wound into windings around their winding axes XI and X2 in dif- ferent directions, one clockwise, the other counterclockwise.

Thus the first thread is wound clockwise and the second thread is wound counterclockwise.

The winding axes XI and X2 are parallel to each other. Each thread consists of at least one strand of a material conducting electricity well. Advanta- geously, the thread comprises, in addition to the strand in question, one or more support strands wound in the same winding direction as the strand conducting electricity. The support strands support the thread structure and the strand con ducting electricity. Electromagnetic fields and/or magnet fields from the outside towards a person die out, and electromagnetic fields from the person itself, gen- erated by muscular tension, die out. The fabric thus provides an effective protec tion against all magnetic radiation. What takes place in the arrangement is that electromagnetic radiation from the inside and outside generate electrical current in the windings, which fur ther generate electromagnetic fields in the wound windings which die out in adja cent strands at each others’ threads. The electromagnetic fields of a person’s own body, such as muscles, die out, and electromagnetic fields and magnetic fields from the outside towards the person die out. A person who is wearing a piece of clothing made of the fabric of the invention or using a bed-sheet or knitted prod uct made of the inventive fabric achieves a good comprehensive protection against electromagnetic radiation and magnetic radiation. At the location of the person, a space free of electromagnetic radiation and magnetic fields is achieved.

ln the electrically conductive threads of the fabric, electromagnetic ra diation is transformed into electrical currents and further into heat. A tempera ture increase takes place in the fabric, and the fabric may be used in thermal clothing. Therefore, the phenomenon referred to in the above may be utilized in the use of the fabrics.

A wound thread may comprise a support strand or a plurality of sup port strands wound clockwise at a second thread and in the same direction as the electrically conductive strand. They act as a support frame of a spiral-like struc ture. ln the second thread, the support structure is the same, but the winding di- rection is counterclockwise. The support strands are not electrically conductive. There are advantageously two or three or four or more or them, and in each thread, there is advantageously one electrically conductive strand.

Adjacent thread lines are repeated so that every other thread is wound clockwise, and every other thread is wound counterclockwise. This results in a network structure that provides protection against electromagnetic radiation on the entire length and width of the fabric. The cross section of the electrically con ductive strands in the thread is advantageously round, and with the number of winding turns of the electrically conductive strand in the thread per a unit of length, it is possible to adjust the effectiveness of the filtering.

The threads may also have been placed transversely in relation to the winding axes XI and X2, whereby protection is obtained also in relation to a vi bration plane turned by 90 degrees. The arrangement with threads running this way is the same as that of threads in the XI, X2 directions. Adjacent threads are wound alternately in the clockwise and anticlockwise direction. The distance D1 between the winding axes XI, X2 and X3, X4 is in the range 0.5 mm to 50 mm. A grid Gl, G2, G3....Gn bound by the treads is obtained, and an effective protection against electromagnetic radiation.

The third and fourth electrically conductive threads in question each comprises a strand of a material conducting electricity well, as do the first and second threads. The strand may be of silver, graphite or copper, for example, or of another electrically conductive material. When the strands are located on differ ent sides of the fabric or knitted product, they do not touch each other at the crossing points.

They may have been placed as a network on either side of the fabric. This therefore allows an embodiment in which the transversely running threads are located on the same side of the fabric and contact the first and second threads at the crossing points of the threads of the network.

This way, the inventive fabric structure filters and puts out electro magnetic radiation and magnetic fields generated by magnets.

The fabric, texture or knitted product according to the invention are characterised by what is disclosed in the claims.

ln the following, the invention is described with reference to preferred embodiments of the drawings, to which the invention is not meant to be exclu sively restricted. Brief description of the figures

Figure 1A illustrates a top view of the fabric according to the inven tion.

Figure IB shows the solution of Figure 1A, with the exception that each thread comprises a grounding wire.

Figure 2A shows a preferred embodiment of how the electrically con ductive threads are passed in a loop-like fashion in the fabric structure.

Figure 2B shows a solution according to Figure 2A, with the exception that the thread passes are not closed.

Figure 2C shows the solution of Figure 2B, also comprising grounding of the loops.

Figure 3 shows the placing of threads in the Y direction transversely in relation to the X direction, the treads defining rectangular or square areas.

Figure 4 illustrates the placing of threads in the Y direction on one side of the fabric, whereas threads in the X direction are on the other side of the fabric.

ln Figure 5, the threads in the X direction and Y direction cross each other. Figure 6 shows how the electrically conductive strands are supported by non-conductive support strands wound in the same direction. Detailed description of the invention

Figure 1A is a schematic representation of a fabric 10 according to the invention. It may also be a knitted product or weft.

The fabric comprises adjacent and parallel electrically conductive threads llal, 12al; Ila2,12a2; Ila3,12a3;....

The threads llal and 12al are wound into windings in opposite di rection SI and S2. The winding direction SI of the thread llal around its winding axis XI is clockwise, and he winding direction S2 of the thread 12al around its winding axis X2 is counterclockwise.

The fabric, knitted product, or similar, needs to be at a short distance from a person’s skin. The fabric may be a piece of clothing, such as a sportswear, a bed-sheet, or a nightgown. The magnetic field produced by a person’s muscular tension dies out at the windings of the threads. Likewise, the field of electromag netic radiation from the outside and magnetic fields of magnets die out. The mag netic fields generate an electric current in the threads, the currents further gener- ating flows of electric currents in opposite direction in adjacent threads, and fur ther electromagnetic fields that further put each other out. According to the in vention, the fabric 10 is formed of threads llal,12al; Ila2,lla2; ... wound into windings and by weaving or knitting from beam threads 14 or similar, and advan tageously by machine weaving / machine knitting automatically ln the winding, with the number of winding turns of the electrically conductive strand cl per a unit of length, the effectiveness of the filtering is adjusted. As shown in Figure 1A, the threads extend on the area of the entire fabric, running as per Figure 1A from the bottom to the top, from the lower edge of the fabric to its top edge. Each thread begins at the bottom edge of the fabric and ends at the top edge. The wind- ing axis XI and X2 are at a distance D1 from each other. The axes XI and X2 are parallel and advantageously straight.

ln this application, fabric 10 is also understood to refer to a knitted fabric, such as a machine knitted piece of clothing, such as a blouse, bed-sheet etc. Wallpaper, too, is possible.

The solution of Figure IB otherwise corresponds with the solution of

Figure 1A, but each thread Hal,12al,lla2,12a2,lla3,12a3... comprises a grounding wire 15al,15a2,.... Grounding provides a major improvement in filter ing the fields but is not a must.

Figure 2A is an embodiment of the invention where the thread llal has been passed in a loop-like, wavelike fashion, and likewise the thread 12al has been passed in a loop-like and wavelike fashion. They have been passed as open loops so that the threads have been placed in relation to each other so that next to the thread llal there is always the thread 12al, in other words, next to the thread llal wound clockwise, there is always the thread 12al wound counter clockwise.

Figure 2B show the solution of Figure 2A, except that the electrically conductive threads llal, 12al are closed loops.

ln Figure 2C, the threads and closed loops llal and 12al of the em bodiment of Figure 2B are grounded by wires, or in general by electrically con ductive threads 15al, 15a2.

Figure 3 shows an embodiment of the invention, where there are, in addition to the vertical threads llal, 12al, also horizontal threads 13al, 14al which have been placed and wound following the same principle as the threads llal, 12al of Figure 1A.

The threads 13al, 14al are so wound that the threads 13al are wound around their horizontal winding axis Y1 clockwise, and the threads 14al are wound around their winding axis Y2 counterclockwise. The axes Y1 and Y2 are horizontal straight axes parallel in relation to each other. The distance between them is Dl. Therefore, by winding, the threads 13al, 14al are formed into wind ings. The magnetic fields they generate put each other out and affect radiation turned by 90 degrees. This way, electromagnetic radiations on different planes are effectively put out by the solution ln this solution, too, the threads 13al, 14al of a material conducting electricity well are so arranged in relation to each other that a thread wound clockwise is next to a thread wound counterclockwise.

Figure 4 illustrates the solution of Figure 3. The threads llal,12al;13al,14al are located on the surface of the fabric, and on the side T1 contact each other at the crossing points in the embodiment. The network is at tached to the fabric lt is part of the beam thread and weft structure of the fabric. The network forms a grid Gl, G2, G3....

ln Figure 5, the thread 13al, 14al are located on the fabric structure side T2 and the structure formed by the threads llal, 12al on the other side T1 of the fabric structure. Together they form a network structure when the plane fabric is examined in the direction of the normal of its plane E.

Figure 6 shows a solution where the thread llal is formed so that it comprises at least one strand cl wound from a material conducting electricity well and support strands bl, b2 wound in the same winding direction, and which are not of a material conducting electricity. The purpose of the support strands bl, b2 is to support the thread structure. The support strands bl, b2 may also keep the temperature under control, that is, they may be thermally limiting fibres. The support strands may be polyester fibres, for example. There may be a plurali- ty of channels in the structure of the support strands.

The strands cl, bl, b2 are mutually wound in the same direction, clockwise in the embodiment of the figure.

The structure is similar at the strand 12al. lt, too, comprises the strand cl of a material conducting electricity well and support strands bl, b2 that are not of a material conducting electricity. They are mutually wound in the same direction, counterclockwise in the embodiment of Figure 6. Adjacent threads llal, 12al have mutually different winding directions. One thread llal is wound clockwise and the other thread 12al anticlockwise.

The thread llal,12al,13al,14al may in an embodiment be formed of just one strands cl of a material conducting electricity well, in which embodiment there are no support strands.

The cross section of the strands cl conducting electricity and the sup ports strands bl, b2 of the threads is advantageously round. The cross section is perpendicular along the longitudinal and centre axis of the strand. The cross sec- tional dimension of the threads llal,12al,13al,14al is less than 3 mm and ad vantageously less than 1 mm.

Other cross sectional forms are also possible. A person skilled in the art will find it obvious that, as technology advances, the basic idea of the inven tion may be implemented in many different ways. The invention and its embodi- ments are thus not restricted to the examples described above but may vary with in the scope of the claims.

Claims

1. A fabric (10) comprising, in the fabric material, threads (llal,12al;13al,14al) of a material conducting electricity well, by means of which electromagnetic radiation and magnetic fields are filtered, character- i s e d in that

the threads (llal,12al;13al,14al) are placed next to each other and wound around their winding axis (X1,X2;Y1,Y2) so that in the fabric the first thread (llal, 13al) is wound clockwise and the second thread (12al, 14al) next to it is wound counterclockwise, and in that the threads comprise a material that conducts electricity well.

2. A fabric (10) as claimed in claim 1, characterised in that the winding axes (XI, Yl; X2, Y2) of the first thread (llal, 13al) and the second thread (12al, 14al) are parallel and at a distance (Dl) from each oth er, which is 0.5 mm to 50 mm.

3. A fabric (10) as claimed in claim 1 or 2, characterised in that the first thread (llal) is passed in a wavelike manner and in that it is passed as a closed loop or open loop and in that the second thread (12al) next to it is also passed in a wavelike manner as a closed or open loop so that adjacent threads (llal, 12al) are oppositely wound, one wound clockwise in relation to its winding axis (XI), and the other counterclockwise in relation to its winding ax is (X2).

4. A fabric (10) as claimed in claim 1, 2 or 3, characterised in that

the fabric (10) comprises, in connection with or near the vertical threads (llal, 12al), threads (13al, 14al) which run horizontally, and in that the threads (llal,12al:13al,14al) in question form a grid (G1,G2,G3...).

5. A fabric (10) as claimed in claim 4, characterised in that third and fourth threads (13al, 14al) are also placed next to each other so that the third threads (13al) are wound clockwise and the fourth threads (14al) are wound counterclockwise, and it that next to the thread (13al) wound clockwise there is the thread (14al) wound counterclockwise.

6. A fabric (10) as claimed in claim 5, characterised in that the distance (Dl) between horizontal winding axes (Yl) and (Y2) is 0.5 mm to 50 mm.

7. A fabric (10) as claimed in claim 4, 5, or 6, c h a r a c t e r i s e d in that the grid (G1,G2,G3...) formed by the threads (llal,12al;13al,14al) is located on the surface of the fabric (10) or in the middle of it.

8. A fabric (10) as claimed in claim 4, 5, 6, or 7, c h a r a c t e r i s e d in that

the vertical threads (llal,12al) are located on one surface of the fab ric and in that the horizontally running threads (13al,14al) are located on the other surface of the fabric (10).

9. A fabric (10) as claimed in any one of the preceding claims, characterised in that:

the fabric (10) comprises a grounding wire (15al,15a2,...) connected to the electrically conducting thread (llal,12al;13al,14al).

10. A fabric (10) as claimed in any one of the preceding claims, characterised in that:

the electrically conducting thread comprises copper (Cu), silver (Ag), or graphite (C), or another material conducting electricity.

11. A fabric (10) as claimed in any one of the preceding claims, characterised in that:

the fabric (10) is a texture, knitted fabric, bed-sheet, piece of clothing, or wallpaper made of threads.

12. A fabric (10) as claimed in any one of the preceding claims, characterised in that:

the electrically conducting thread (llal; 12al; 13al; 14al) consists of at least one strand (cl) of a material conducting electricity well and of at least one support strand (bl, b2) which is not of a material conducting electricity well, and in that in the same thread, the strand (cl) of a conductive material and the sup port strand (bl, b2) are wound in the same winding direction in the same thread.

13. A fabric (10) as claimed in any one of the preceding claims, characterised in that:

the cross sectional form of the electrically conductive strand (cl) is advantageously round.

14. A fabric (10) as claimed in claim 1, characterised in that the thread (llal,12al,13al,14al) consists of at least one strand (cl) of a material conducting electricity well.