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DE10100814A1 - Artificial leather for electromagnetic conduction, e.g. for screening communications equipment, has outer layer of polyurethane and base layer of polyurethane-impregnated metal and complex fibres - Google Patents

Artificial leather for electromagnetic conduction, e.g. for screening communications equipment, has outer layer of polyurethane and base layer of polyurethane-impregnated metal and complex fibres

Info

Publication number
DE10100814A1
DE10100814A1 DE10100814A DE10100814A DE10100814A1 DE 10100814 A1 DE10100814 A1 DE 10100814A1 DE 10100814 A DE10100814 A DE 10100814A DE 10100814 A DE10100814 A DE 10100814A DE 10100814 A1 DE10100814 A1 DE 10100814A1
Authority
DE
Germany
Prior art keywords
complex
fibers
fibres
synthetic leather
electromagnetic waves
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.)
Withdrawn
Application number
DE10100814A
Other languages
German (de)
Inventor
Chin-Shih Chang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kings Metal Fiber Technologies Co Ltd
Original Assignee
Kings Metal Fiber Technologies Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kings Metal Fiber Technologies Co Ltd filed Critical Kings Metal Fiber Technologies Co Ltd
Publication of DE10100814A1 publication Critical patent/DE10100814A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/28—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer impregnated with or embedded in a plastic substance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/02—Layer formed of wires, e.g. mesh
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • H05K9/009—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive fibres, e.g. metal fibres, carbon fibres, metallised textile fibres, electro-conductive mesh, woven, non-woven mat, fleece, cross-linked
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0246—Acrylic resin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/103—Metal fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/202—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2375/00—Polyureas; Polyurethanes

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Nonwoven Fabrics (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

Artificial leather for conduction of electromagnetic waves with an outer layer of polyurethane resin (PUR) and a base layer of polyurethane-impregnated metal fibres and complex fibres, obtained by pulping non-woven fabric (sandwich-laminated complex/metal/complex fabric or mixed metal/complex fabric) and then impregnating and coating with PUR. Artificial leather for the conduction of electromagnetic waves comprises (a) an outer layer, preferably of polyurethane resin (PUR) and a base layer, preferably consisting of (b) 3 layers of non-woven fabric made of complex fibres, metal fibres and complex fibres respectively or (d) a non-woven fabric made from a mixture of complex fibres and metal fibres, in each case with an overall content of 30-70% metal fibres and 70-30% complex fibres. In case (b), the metal fibres and the complex fibres (cutted model or island model) are each carded and pre-pressed and then combined by sandwich lamination; in (d) the mixed fibres are processed by carding and needle-pressing. The base material obtained is then pulped (by reduction or on a spun-lace machine), impregnated and coated with PUR and then polished to give artificial leather with a screening capacity of 30-45 dB at 500 MHz to 2 GHz.

Description

Die Erfindung betrifft ein Kunstleder zur Leitung elektromagnetischer Wellen, das durch Mischung oder Kaschierung von metallischen Fasern und Komplexfasern hergestellt und einer PU-Behandlung durch Eintauchen in PU-Harz und Beschichtung mit PU-Harz unterzogen ist.The invention relates to an artificial leather for conducting electromagnetic waves, which Mixing or lamination of metallic fibers and complex fibers and a PU treatment by immersing in PU resin and coating with PU resin is subjected.

Herkömmliches PU-Kunstleder besteht aus einer Grundlage, einer Haftschicht, einer Oberschicht und einer Oberflächenbeschichtung. Als Grundlage wird ein Gewebe, ein Velours oder ein Vlies verwendet, das in PU-Harz getaucht, durch Entfernung des Lö­ sungsmittels DMF verhärtet und dann geschliffen und weichgemacht wird. Anschließend wird das Halbzeug gefärbt, gepresst und geprägt. Das trockene PU-Kunstleder wird nass bearbeitet oder direkt beschichtet, wobei das Beschichtungsmittel direkt auf die Grundlage oder das Vlies aufgetragen wird.Conventional PU synthetic leather consists of a base, an adhesive layer, one Top layer and a surface coating. As a basis, a fabric, a Velor or a fleece used that is dipped in PU resin by removing the Lö DMF hardened and then sanded and softened. Subsequently the semi-finished product is colored, pressed and embossed. The dry PU synthetic leather is processed wet or coated directly, the coating agent directly on the Basis or the fleece is applied.

Die Grundlage dieses PU-Kunstleders besteht aus Polyesterfasern oder Nylonfasern und ist als Gewebe, Vlies oder Mikrofaser ausgebildet. Die Grundlage wird einer PU- Harz-Nassbehandlung oder einer PU-Harz-Trockenbehandlung unterzogen. Das so er­ haltene PU-Kunstleder wird bei Kleidungsstücken, Schuhen, Gürteln und Wellen ver­ wendet.The basis of this PU synthetic leather consists of polyester fibers or nylon fibers and is designed as a fabric, fleece or microfiber. The basis is a PU Resin wet treatment or PU resin dry treatment. So he PU synthetic leather is used in clothing, shoes, belts and waves turns.

Der Nachteil des herkömmlichen PU-Kunstleders besteht darin, dass es nicht gegen magnetische oder elektromagnetische Wellen isolieren kann.The disadvantage of conventional PU synthetic leather is that it is not against can isolate magnetic or electromagnetic waves.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Kunstleder zu schaffen, das leitfä­ hig ist und einen Schutz vor magnetischen oder elektromagnetischen Wellen bietet.The invention is therefore based on the object to provide an artificial leather, the leitfä and offers protection against magnetic or electromagnetic waves.

Erfindungsgemäß wird diese Aufgabe durch folgende Verfahren gelöst:
According to the invention, this object is achieved by the following methods:

  • 1. Metallfasern (30-70%), die gekardet und vorgepresst sind, und Komplexfasern (70-30%), die gekardet und vorgepresst sind, werden nach einer Sandwichkaschierung, d. h. Komplexfasern/Metallfasern/Komplexfasern, und Pressen durch Verringe­ rung oder mittels einer Spunlace-Maschine zerfasert. Anschließend erfolgt eine PU- Behandlung durch Eintauchen in PU-Harz und eine Beschichtung mit PU-Harz. Nach dem Schleifen wird das Kunstleder erhalten.1. metal fibers (30-70%), which are carded and pre-pressed, and complex fibers (70-30%), which are carded and pre-pressed, after sandwich lamination, d. H. Complex fibers / metal fibers / complex fibers, and pressing by means of rings or fiberized using a spunlace machine. Then there is a PU Treatment by immersion in PU resin and a coating with PU resin. To the artificial leather is preserved after grinding.
  • 2. Die Metallfasern (30-70%) und die Komplexfasern (70-30%) werden vermischt und nach dem Karden und Nadelpressen durch Verringerung oder mittels eines Spunla­ ce-Maschine zerfasert. Anschließend erfolgt eine PU-Behandlung durch Eintauchen in PU-Harz und eine Beschichtung mit PU-Harz. Nach dem Schleifen wird das Kunstleder erhalten.2. The metal fibers (30-70%) and the complex fibers (70-30%) are mixed and after carding and needle pressing by reduction or by means of a spunla Ce machine frayed. A PU treatment is then carried out by immersion in PU resin and a coating with PU resin. After grinding, it will Get leatherette.

Das auf eine der beiden oben beschriebenen Weisen hergestellte Kunstleder besteht erfindungsgemäß aus einem Gemisch von Metallfasern und Komplexfasern und hat bei 500 MHz-2 GHz eine Abschirmung (dB) von 30 dB-45 dB. Dieses Kunstleder kann bei elektronischen Kommunikationsgeräten, Haushaltsgeräten, Computern, Kleidungsstücken, medizinischen Geräten und als Schutzprodukt gegen magnetische Wellen für Halbleiter verwendet werden.The synthetic leather is made in one of the two ways described above according to the invention from a mixture of metal fibers and complex fibers and has 500 MHz-2 GHz a shielding (dB) of 30 dB-45 dB. This synthetic leather can be used electronic communication devices, household appliances, computers, clothing, medical devices and as a protective product against magnetic waves for Semiconductors are used.

Die Metallfasern können insbesondere aus rostfreiem Stahl hergestellt sein.The metal fibers can in particular be made of stainless steel.

  • 1. Bei unverändertem Herstellungsverfahren und einer Änderung des Anteils der Fa­ sern aus rostfreiem Stahl um 3-5% hat das Kunstleder einen Widerstandswert in Volumen (Ω-cm) von 105 bis 108. Daher ist das Kunstleder leitfähig und kann bei elektrischen Produkten verwendet werden.1. With an unchanged manufacturing process and a change in the proportion of fibers made of stainless steel by 3-5%, the synthetic leather has a resistance value in volume (Ω-cm) of 10 5 to 10 8 . Therefore, the synthetic leather is conductive and can be used for electrical products.

Im Folgenden wird der Aufbau und die Funktion anhand von zwei Ausführungsbeispie­ len mit Bezug auf die beigefügten Zeichnungen beschrieben.In the following, the structure and the function are based on two design examples len described with reference to the accompanying drawings.

Es zeigen:Show it:

Fig. 1 ein Flussdiagramm der Herstellung des erfindungsgemäßen Kunstleders zur Leitung elektromagnetischer Wellen; FIG. 1 is a flow diagram of the production of the artificial leather of the present invention of electromagnetic waves to the conduit;

Fig. 2 den Aufbau des erfindungsgemäßen Kunstleders zur Leitung elektromag­ netischer Wellen; Figure 2 shows the structure of the synthetic leather according to the invention for the conduction of electromagnetic waves.

Fig. 3 ein Flussdiagramm der Herstellung des erfindungsgemäßen Kunstleders zur Leitung elektromagnetischer Wellen gemäß einem weitern Ausfüh­ rungsbeispiel; Fig. 3 is a flowchart of the manufacture of the synthetic leather according to the invention for guiding electromagnetic waves according to another example;

Fig. 4 den Aufbau des erfindungsgemäßen Kunstleders zur Leitung elektromag­ netischer Wellen gemäß dem Ausführungsbeispiel der Fig. 3. Fig. 4 shows the structure of the artificial leather of the invention for line netic waves electromag according to the embodiment of FIG. 3.

Das erfindungsgemäße Kunstleder zur Leitung elektromagnetischer Wellen wird mit dem im Flussdiagramm der Fig. 1 dargestellten Verfahren hergestellt. Fasern aus rost­ freiem Stahl (30-70%) und Komplexfasern (70-30%) werden nach einer Sandwich- Kaschierung und einem Pressen mit NaOH (5 Gew.-%) mittels einer Spunlace- Maschine, die fünf Düsen (#1, #2, #3, #4, #5) mit 60, 80, 100, 120, 120 bar aufweist, zerfasert. Anschließend erfolgt eine PU-Nassbehandlung durch Eintauchen in 20%-iges PU-Harz und eine Beschichtung mit 9%-igem PU-Harz. Das so erhaltene Kunstleder 1 leitet elektromagnetische Wellen und weist den in Fig. 2 dargestellten Aufbau auf. Das erfindungsgemäße Kunstleder besteht aus einer Deckschicht S und einer Grundschicht U'.The synthetic leather according to the invention for conducting electromagnetic waves is produced using the method shown in the flow diagram in FIG. 1. Stainless steel fibers (30-70%) and complex fibers (70-30%) are sandwich-laminated and pressed with NaOH (5% by weight) using a spunlace machine, the five nozzles (# 1, # 2, # 3, # 4, # 5) with 60, 80, 100, 120, 120 bar, frayed. This is followed by a PU wet treatment by immersion in 20% PU resin and a coating with 9% PU resin. The synthetic leather 1 thus obtained conducts electromagnetic waves and has the structure shown in FIG. 2. The synthetic leather according to the invention consists of a cover layer S and a base layer U '.

  • a) Die Deckschicht wird durch eine PU-Harzschicht c gebildet, mit der die Grundschicht U' beschichtet ist.a) The cover layer is formed by a PU resin layer c with which the base layer U 'is coated.
  • b) Die Grundschicht U' ist ein Gemisch aus einem Vliesstoff a aus Komplexfasern oder normalen Fasern, einem Vliesstoff b aus Fasern aus rostfreiem Stahl und dem Vlies­ stoff a aus Komplexfasern oder normalen Fasern a. Die Vliesstoffe weisen zueinan­ der unterschiedliche Anteile auf und sind durch Pressen miteinander verbunden.b) The base layer U 'is a mixture of a nonwoven fabric a made of complex fibers or normal fibers, a nonwoven fabric b made of stainless steel fibers and the nonwoven fabric a from complex fibers or normal fibers a. The nonwovens face each other the different proportions and are connected by pressing.

Beim Kunstleder 1 zur Leitung elektromagnetischer Wellen sind die Komplexfasern "cutted model"-Komplexfasern, die aus Nylon 6 und Polyesterfasern bestehen, oder "is­ land model"-Komplexfasern, die aus Nylon 6 und COPET bestehen. Die Abschirmung (dB) dieses Kunstleders beträgt bei 500 MHz-2 GHz um die 30 dB bis 45 dB. In the synthetic leather 1 for guiding electromagnetic waves, the complex fibers are "cutted model" complex fibers consisting of nylon 6 and polyester fibers, or "is land model" complex fibers consisting of nylon 6 and COPET. The shielding (dB) of this synthetic leather is around 30 dB to 45 dB at 500 MHz-2 GHz.

Gemäß einem zweiten Ausführungsbeispiel wird das erfindungsgemäße Kunstleder zur Leitung elektromagnetischer Wellen mit dem im Flussdiagramm der Fig. 3 dargestell­ ten Verfahren aus Fasern aus rostfreiem Stahl b' (30-70%) und Komplexfasern a' (70-30%) hergestellt, die nach dem Karden und Nadelpressen mit NaOH (5 Gewicht-%) mit einer Spunlace-Maschine, die fünf Düsen (#1, #2, #3, #4, #5) mit 60, 80, 100, 120, 120 bar aufweist, zerfasert werden. Anschließend erfolgt eine PU-Nassbehandlung durch Eintauchen in 20%-iges PU-Harz und eine Beschichtung mit 9%-igen PU-Harz. Das so erhaltene Kunstleder 2 leitet elektromagnetische Wellen und weist den Aufbau gemäß Fig. 4 auf. Das Kunstleder besteht aus einer Deckschicht S' und einer Grundschicht U".According to a second exemplary embodiment, the synthetic leather according to the invention for conducting electromagnetic waves is produced using the method shown in the flowchart in FIG. 3 from fibers made of stainless steel b '(30-70%) and complex fibers a' (70-30%), which according to carding and needle pressing with NaOH (5% by weight) with a spunlace machine which has five nozzles (# 1, # 2, # 3, # 4, # 5) at 60, 80, 100, 120, 120 bar, be frayed. This is followed by a wet PU treatment by immersion in 20% PU resin and a coating with 9% PU resin. The synthetic leather 2 thus obtained conducts electromagnetic waves and has the structure according to FIG. 4. The synthetic leather consists of a cover layer S 'and a base layer U ".

  • a) Die Deckschicht S wird durch PU-Harzschicht c gebildet, mit der die Grundschicht U" beschichtet ist.a) The cover layer S is formed by PU resin layer c with which the base layer U " is coated.
  • b) Die Grundschicht U" ist ein Gemisch aus Komplexfasern oder normalen Fasern a' und aus Fasern aus nicht rostendem Stahl b', die in PU-Harz C" getaucht worden sind.b) The base layer U "is a mixture of complex fibers or normal fibers a ' and from stainless steel fibers b 'which have been dipped in PU resin C " are.

Beim Kunstleder 2 zur Leitung elektromagnetischer Wellen sind die Komplexfasern so­ genannte "cutted model"-Komplexfasern, die aus Nylon 6 und Polyesterfasern bestehen, oder sogenannte "island model"-Komplexfasern, die aus 37 Island-Nylon 6 und COPET bestehen. Die Abschirmung (dB) dieses Kunstleders beträgt bei 500 MHz-2 GHz um die 30 dB-45 dB.In the synthetic leather 2 for guiding electromagnetic waves, the complex fibers are so-called "cutted model" complex fibers, which consist of nylon 6 and polyester fibers, or so-called "island model" complex fibers, which consist of 37 island nylon 6 and COPET. The shielding (dB) of this synthetic leather is around 30 dB-45 dB at 500 MHz-2 GHz.

Das erfindungsgemäße Kunstleder zur Leitung elektromagnetischer Wellen ist durch seine Abschirmung gekennzeichnet, die mit dem Anteil der Fasern aus rostfreiem Stahl (%) steigt. The synthetic leather according to the invention for conducting electromagnetic waves is through its shielding is labeled with the proportion of stainless steel fibers (%) increases.  

BezugszeichenlisteReference list

11

, ,

22nd

Kunstleder zur Leitung elektromagnetischer Wellen
a Vliesstoff aus Komplexfasern
b Vliesstoff aus Fasern aus rostfreiem Stahl
c PU-Beschichtung
a' Komplexfasern
b' Fasern aus rostfreiem Stahl
c' Vliesstoff aus Komplexfasern und Fasern aus rostfreiem Stahl
c" PU-Harz
Imitation leather to conduct electromagnetic waves
a Composite fiber nonwoven
b Stainless steel fiber fleece
c PU coating
a 'complex fibers
b 'Stainless steel fibers
c 'Nonwoven fabric made of complex fibers and stainless steel fibers
c "PU resin

Claims (6)

1. Kunstleder zur Leitung elektromagnetischer Wellen, umfassend
  • 1. (1)
  • 2. eine Deckschicht, vorzugsweise eine PU-Harzschicht, und
  • 3. eine Grundschicht, vorzugsweise ein Gemisch aus einem Vliesstoff aus Komplexfasern, aus einem Vliesstoff aus Metallfasern und aus einem Vlies­ stoff aus Komplexfasern,
wobei die Metallfasern (30-70%), die gekardet und vorgepresst sind, und die Kom­ plexfasern, die "cutted model"-Komplexfasern oder "island-model"-Komplexfasern sind, nach der Sandwichkaschierung, d. h. Komplexfasern/Metallfasern, Komplex­ fasern, und dem Pressen durch Verringerung oder mittels einer Spunlace-Maschine zerfasert werden, wonach eine PU-Behandlung durch Eintauchen in PU-Harz und eine Beschichtung mit PU-Harz erfolgt, wobei nach einem Schleifvorgang das Kunstleder erhalten wird, das bei 500 MHz-2 GHz eine Abschirmung (dB) von 30 dB-45 dB hat,
oder umfassend
  • 1. (2)
  • 2. eine Deckschicht, vorzugsweise eine PU-Harzschicht,
  • 3. eine Grundschicht, vorzugsweise aus einem Vliesstoff aus Komplexfasern und Metallfasern,
wobei die Metallfasern (30-70%) und die Komplexfasern (70-30%) gemischt und nach dem Karden und Nadelpressen durch Verringerung oder mittels einer Spunla­ ce-Maschine zerfasert werden, wonach eine PU-Behandlung durch Eintauchen in PU-Harz und eine Beschichtung mit PU-Harz erfolgt, wobei nach dem Schleifen das Kunstleder erhalten wird, das bei 500 MHz-2 GHz eine Abschirmung (dB) von 30 dB-45 dB hat.1. Faux leather for guiding electromagnetic waves, comprehensive
  • 1. ( 1 )
  • 2. a cover layer, preferably a PU resin layer, and
  • 3. a base layer, preferably a mixture of a nonwoven fabric made of complex fibers, of a nonwoven fabric made of metal fibers and of a nonwoven fabric made of complex fibers,
the metal fibers (30-70%), which are carded and pre-pressed, and the complex fibers, which are "cutted model" complex fibers or "island-model" complex fibers, after the sandwich lamination, ie complex fibers / metal fibers, complex fibers, and the pressing can be defibrated by reduction or by means of a spunlace machine, after which a PU treatment is carried out by immersion in PU resin and a coating with PU resin, the artificial leather being obtained after a grinding process and operating at 500 MHz-2 GHz has a shielding (dB) of 30 dB-45 dB,
or comprehensive
  • 1. ( 2 )
  • 2. a cover layer, preferably a PU resin layer,
  • 3. a base layer, preferably made of a nonwoven fabric made of complex fibers and metal fibers,
wherein the metal fibers (30-70%) and the complex fibers (70-30%) are mixed and defibrated after the carding and needle pressing by reduction or by means of a Spunla ce machine, after which a PU treatment by immersion in PU resin and a Coating with PU resin takes place, whereby after grinding the artificial leather is obtained, which has a shielding (dB) of 30 dB-45 dB at 500 MHz-2 GHz. 2. Kunstleder zur Leitung elektromagnetischer Wellen nach Anspruch 1, dadurch ge­ kennzeichnet, dass das Kunstleder bei elektromagnetischen Kommunikationsgerä­ ten, Haushaltsgeräten, Computern, Kleidungsstücken, medizinischen Geräten und als Schutzprodukt gegen magnetische Wellen für Halbleiter verwendbar ist.2. synthetic leather to conduct electromagnetic waves according to claim 1, characterized ge indicates that the synthetic leather in electromagnetic communication devices household appliances, computers, clothing, medical devices and can be used as a protective product against magnetic waves for semiconductors. 3. Kunstleder zur Leitung elektromagnetischer Wellen, nach Anspruch 1, dadurch ge­ kennzeichnet, dass bei einer Änderung des Anteils der Metallfasern um 3-5% das Kunstleder einen Widerstandswert in Volumen (Ω-cm) von 105-108 hat und somit leitfähig ist.3. synthetic leather for guiding electromagnetic waves, according to claim 1, characterized in that with a change in the proportion of metal fibers by 3-5%, the synthetic leather has a resistance value in volume (Ω-cm) of 10 5 -10 8 and thus conductive is. 4. Kunstleder zur Leitung elektromagnetischer Wellen nach Anspruch 1 oder 2, da­ durch gekennzeichnet, dass das Kunstleder bei elektrischen Produkten verwend­ bar ist.4. synthetic leather for conducting electromagnetic waves according to claim 1 or 2, because characterized in that the synthetic leather is used in electrical products is cash. 5. Kunstleder zur Leitung elektromagnetischer Wellen nach Anspruch 1, dadurch ge­ kennzeichnet, dass die Faser eine normale Faser, beispielsweise eine Polyesterfa­ ser, eine Nylonfaser, eine Polyacrylfaser oder eine Baumwollfaser ist.5. synthetic leather to conduct electromagnetic waves according to claim 1, characterized ge indicates that the fiber is a normal fiber, for example a polyesterfa ser, a nylon fiber, a polyacrylic fiber or a cotton fiber. 6. Kunstleder zur Leitung elektromagnetischer Wellen, dadurch gekennzeichnet, dass die Metallfasern aus Fasern aus rostfreiem Stahl bestehen.6. synthetic leather to conduct electromagnetic waves, characterized in that the metal fibers are made of stainless steel fibers.
DE10100814A 2000-01-10 2001-01-10 Artificial leather for electromagnetic conduction, e.g. for screening communications equipment, has outer layer of polyurethane and base layer of polyurethane-impregnated metal and complex fibres Withdrawn DE10100814A1 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7494697B2 (en) 2005-05-17 2009-02-24 San Fang Chemical Industry Co., Ltd. Substrate of artificial leather including ultrafine fibers and methods for making the same
US7762873B2 (en) 2005-05-27 2010-07-27 San Fang Chemical Industry Co., Ltd. Ultra fine fiber polishing pad
US7794796B2 (en) 2006-12-13 2010-09-14 San Fang Chemical Industry Co., Ltd. Extensible artificial leather and method for making the same
CN103194859A (en) * 2013-04-02 2013-07-10 福建鑫华股份有限公司 Preparation method for high-performance uniform leather base cloth
GB2503213A (en) * 2012-06-18 2013-12-25 Bae Systems Plc Structural integrated wiring loom
US20150376832A1 (en) * 2014-06-30 2015-12-31 The Hong Kong Polytechnic University Artificial leather

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7494697B2 (en) 2005-05-17 2009-02-24 San Fang Chemical Industry Co., Ltd. Substrate of artificial leather including ultrafine fibers and methods for making the same
US7762873B2 (en) 2005-05-27 2010-07-27 San Fang Chemical Industry Co., Ltd. Ultra fine fiber polishing pad
US7794796B2 (en) 2006-12-13 2010-09-14 San Fang Chemical Industry Co., Ltd. Extensible artificial leather and method for making the same
GB2503213A (en) * 2012-06-18 2013-12-25 Bae Systems Plc Structural integrated wiring loom
US9552905B2 (en) 2012-06-18 2017-01-24 Bae Systems Plc Structural integrated wiring loom
CN103194859A (en) * 2013-04-02 2013-07-10 福建鑫华股份有限公司 Preparation method for high-performance uniform leather base cloth
CN103194859B (en) * 2013-04-02 2016-01-20 福建鑫华股份有限公司 A kind of preparation method of High-performance uniform leather base fabric
US20150376832A1 (en) * 2014-06-30 2015-12-31 The Hong Kong Polytechnic University Artificial leather

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