CN114025952A - Multi-layer textile - Google Patents

Multi-layer textile Download PDF

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Publication number
CN114025952A
CN114025952A CN202080042865.8A CN202080042865A CN114025952A CN 114025952 A CN114025952 A CN 114025952A CN 202080042865 A CN202080042865 A CN 202080042865A CN 114025952 A CN114025952 A CN 114025952A
Authority
CN
China
Prior art keywords
textile
layer
intermediate layer
textile according
surface layers
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
Application number
CN202080042865.8A
Other languages
Chinese (zh)
Inventor
J·邓克尔
托斯滕·格莱西
A·埃森霍特
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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 Carl Freudenberg KG filed Critical Carl Freudenberg KG
Publication of CN114025952A publication Critical patent/CN114025952A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered 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
    • B32B5/02Layered 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
    • B32B5/026Knitted fabric
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered 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
    • B32B5/02Layered 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
    • B32B5/024Woven fabric
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered 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
    • B32B5/02Layered 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
    • B32B5/06Layered 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 characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered 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
    • B32B5/22Layered 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
    • B32B5/24Layered 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
    • B32B5/26Layered 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 another layer next to it also being fibrous or filamentary
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00Layers arrangement
    • B32B2250/033 layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00Layers arrangement
    • B32B2250/20All layers being fibrous or filamentary
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00Layers arrangement
    • B32B2250/40Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/726Permeability to liquids, absorption
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/728Hydrophilic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/732Dimensional properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/732Dimensional properties
    • B32B2307/734Dimensional stability
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2432/00Cleaning articles, e.g. mops, wipes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2437/00Clothing

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Manufacturing Of Multi-Layer Textile Fabrics (AREA)
  • Knitting Of Fabric (AREA)

Abstract

A multilayered textile fabric (1) comprising two textile surface layers (2, 3), between which two surface layers (2, 3) at least one textile intermediate layer (4) is arranged, said surface layers (2, 3) comprising microfibers, characterized in that said surface layers (2, 3) and said intermediate layer (4) are interconnected by weaving.

Description

Multi-layer textile
Technical Field
The invention relates to a multi-layer textile fabric comprising two textile surface layers, between which at least one textile intermediate layer is arranged.
Background
Such textile fabrics are disclosed, for example, in DE 202008016926U 1 and DE 102004024134 a 1. DE 202008016926U 1 shows a pulp cloth which consists of a fibrous layer made of liquid-absorbing pulp fibers and a further layer which is bonded on one side to the fibrous layer, wherein the further layer differs from the fibrous layer with respect to color or color pattern. The fibres of the fibre layer are interconnected by partial pressing or compaction of the pulp fibres. It can thereby be provided that the fiber layer forms a middle layer and is arranged between two outer layers.
DE 102004024134 a1 shows an absorbent textile structure with high absorption properties for oils, emulsions, chemicals and other water and soil contaminants. The absorbent textile structure is composed of a composite with a covered absorbent core, wherein an absorbent and storable layer formed by continuous filaments arranged in entangled positions is arranged between a thin, permeable, dimensionally stable and fluff-free bottom layer and a cover layer. Wherein all layers are connected to each other.
By varying the outer nonwoven layer used and the essentially uncured filament nonwoven enclosed in between, it is possible to provide an absorbent textile structure with adapted functional properties in relation to the field of application for the absorption of contaminants.
Disclosure of Invention
The object of the invention is to provide a multilayered textile which has high cleaning performance at the same time as high water absorption.
This object is achieved by the features of claim 1. The dependent claims relate to advantageous embodiments.
The multilayer textile according to the invention comprises two textile skin layers, wherein at least one textile intermediate layer is arranged between the two skin layers, wherein the skin layers comprise microfibers.
Since the skin layer comprises microfibers, the skin layer may be provided with a relatively low porosity. The relatively low porosity reduces the amount of water released through the skin. Since the skin layers comprise microfibers, these skin layers have very good cleaning properties. On the one hand, by using micro fibers and the associated capillary effect between the fibers, a good water balance is achieved. The cleaning liquid stored in the middle layer in the cloth will be released very uniformly onto the surface to be cleaned with a minimum of droplets, which means that even smooth and glossy surfaces can be cleaned to a large extent without leaving streaks. On the other hand, textile surfaces made of microfibers have very good cleaning properties against greasy dirt when only water without chemical additives is used as the cleaning liquid.
The intermediate layer preferably forms a reservoir for the liquid, so that the liquid can be stored inside the multilayered textile.
The surface and intermediate layers may be constructed as woven fabrics (Maschenware). Woven fabrics are textile fabrics in which loops formed by yarns are wound into other loops. A lattice composite is formed in the process. The woven fabric has high extensibility and elasticity while having a strong gripping force.
The surface layer and the intermediate layer can be designed as a knitted fabric (Gewirk). Knits are flat structures made of yarn systems or fiber systems by knitting on knitting machines. Unlike knitwear (Strickware), yarns or fibers form a grid in the fabric that is superimposed on top of each other. The yarns or fibers extend vertically and form a grid array with adjacent yarns or fibers. The knitted fabric has the advantage of high dimensional stability. In combination with a cleaning cloth, this results in an improved recovery capacity upon deformation, so that the multi-layer textile can be wrung out better.
The surface layer and the intermediate layer may be connected to each other by weaving. This results in a fixed connection of the surface layer and the intermediate layer to one another, so that the surface layer and the intermediate layer are firmly connected to one another. The skin and intermediate layers may be connected to each other by machine bonding (wirkvertandung). This enables the production of a multi-layer textile fabric on a knitting machine in one go. The surface layer and the middle layer are tightly connected.
The yarns for at least one intermediate layer may comprise monofilaments. Such yarns preferably have a titer of at least 5dtex, preferably at least 10dtex, more preferably at least 25 dtex. When processing such yarns for the middle layer, a relatively thick middle layer with high porosity is produced, which is particularly suitable for absorbing large amounts of water and imparting a minimum thickness to the multilayered textile. The intermediate layer also has a relatively low weight per unit area due to the rather high porosity, so that the multilayer textile as a whole has a low weight per unit area.
Preferably, both surface layers form a cleaning surface. Accordingly, the multi-layer textile forms a cleaning cloth. Since the surface layer is configured by the ultrafine fibers, the cleaning agent has particularly good cleaning performance for grease-containing dirt. In this connection, such a cleaning cloth is particularly suitable for cleaning in the home.
The yarns for the skin layers are preferably constructed as multifilament yarns. Multifilament yarns have smaller diameters and lower weights per unit area than monofilament yarns.
The yarns used for the surface layer can be in the form of staple yarns. Staple yarns contain fibers of finite length. Different types of fibres can thereby be mixed, in particular natural fibres can be processed.
The parts by weight of the microfibers are preferably at least 30 weight percent, based on the weight of the respective skin layer. With such parts by weight of microfibers, particularly high cleaning properties and particularly low porosity are obtained, so that a particularly high water storage capacity of the multilayered textile is obtained.
The fineness of the microfibers of the skin layer may be less than 1 dtex. Fibers having a titer of less than 1dtex are referred to as microfibers and have a high cleaning power, in particular for greasy dirt.
The intermediate layer may comprise microfibers. This is particularly advantageous when a higher water absorption capacity is to be achieved.
The microfiber may be present in a weight part of at least 10 weight percent, based on the weight of the intermediate layer.
The surface layer may have a three-dimensional relief structure. This results in a particularly good gripping force, which is advantageous in particular when used as a cleaning cloth. Furthermore, ridges and depressions may be produced, in which dirt particles may accumulate during cleaning in order to be subsequently discharged again during rinsing of the cleaning cloth.
The total weight per unit area of the textile fabric can be 200g/m2And 500g/m2In the meantime. An advantageous total thickness of the textile is between 1.5mm and 5 mm. A cleaning cloth made of a multi-layer textile fabric according to the invention having such a total weight per unit area and such a total thickness has particularly good handling capacity and good cleaning performance as well as a high water absorption capacity. Due to the design of the skin layer, the water release is so low and so evenly distributed that only a very fine and even film of moisture remains on the surface to be cleaned. When the water was dry, no visible edge or streak of the water drop was observed.
Drawings
Some embodiments of the multilayer textile according to the invention are explained in more detail below with the aid of the drawings. These show schematically:
FIG. 1 shows a multi-layer textile in side view;
figure 2 shows the multi-layer textile in detail.
Detailed Description
The figure shows a multi-layer textile 1 in the form of a cleaning cloth for cleaning a surface. The multilayer textile 1 comprises two textile surface layers 2, 3 and a textile intermediate layer 4 arranged between the two surface layers 2, 3. The surface layers 2, 3 form the cleaning surface of the cleaning cloth and the intermediate layer 4 forms the reservoir for water.
The skin layers 2, 3 comprise microfibres in the form of multifilament yarns having a titre of 0.15 dtex.
An alternative multilayer textile fabric also comprises yarns with a titer of 1.5dtex in the surface layers 2, 3. In this alternative embodiment, the proportion of microfibers is 60 weight percent, based on the weight of the respective skin layers 2, 3.
The middle layer 4 comprises yarns made of monofilaments having a titer of 30 dtex. The middle layer also includes ultra fine fibers in the form of multifilament yarns. The parts by weight of the multifilament yarn are between 15 and 50 percent by weight, based on the weight of the intermediate layer 4. In the present example, the part by weight of the multifilament yarn was 20 weight percent based on the weight of the intermediate layer 4.
The surface layers 2, 3 and the intermediate layer 4 are constructed as a woven fabric in the form of a knitted fabric. The surface layers 2, 3 and the intermediate layer 4 are connected to one another by weaving in the form of a machine connection. In this connection, the surface layers 2, 3 and the intermediate layer 4 are interlockingly and firmly connected to one another and form a unit.
The total weight per unit area of the textile fabric 1 was 100g/m2And 400g/m2Preferably 150g/m2And 300g/m2More preferably 180g/m2And 250g/m2In the meantime. In this example, the total weight per unit area was 240g/m2And the total thickness of the textile fabric 1 is 3.5 mm.
The multilayered textile 1 according to the invention is configured to accommodate up to 500 weight percent of its own weight (dry weight). If the amount of water incorporated in the textile is reduced to 200 weight percent based on the dry weight of the textile by the wringing process, less than or equal to 1.5g/m is caused by the dense structure of the skin layers 2, 32Preferably 1g/m2

Claims (17)

1. A multilayered textile fabric (1) comprising two textile surface layers (2, 3), between which two surface layers (2, 3) at least one textile intermediate layer (4) is arranged, said surface layers (2, 3) comprising microfibers, characterized in that said surface layers (2, 3) and said intermediate layer (4) are interconnected by weaving.
2. The multilayered textile according to claim 1, wherein the intermediate layer (4) forms a water reservoir.
3. The multilayer textile according to claim 1 or 2, characterized in that the surface layers (2, 3) and the intermediate layer (4) are constructed as a woven fabric.
4. The multilayered textile according to claim 3, characterized in that the surface layers (2, 3) and the intermediate layer (4) are configured as a knitted fabric.
5. The multilayered textile according to claim 3, wherein the skin layers (2, 3) and the intermediate layer (4) are interconnected by a mechanical connection.
6. The multilayer textile according to any of claims 1 to 5, wherein the yarns for the at least one intermediate layer (4) comprise monofilaments.
7. The multi-layer textile according to claim 6, wherein said monofilaments have a titer greater than 5 dtex.
8. The multilayer textile according to any of claims 1 to 7, wherein both surface layers (2, 3) form a cleaning surface.
9. The multilayered textile according to any one of claims 1 to 8, wherein the multilayered textile (1) forms a cleaning cloth.
10. The multilayer textile of any of claims 1 to 9 in which the yarns for the skin layers (2, 3) are constructed as multifilament yarns.
11. The multi-layer textile according to any of claims 1 to 10, wherein the parts by weight of the microfibers are at least 30 weight percent, based on the weight of the respective skin layer (2, 3).
12. The multi-layer textile according to any of the claims 1 to 11, wherein the titer of the microfibers of the skin layers (2, 3) is less than 1 dtex.
13. The multilayer textile according to any of claims 1 to 12, wherein the intermediate layer (4) comprises microfibers.
14. The multilayered textile according to claim 13, wherein the part by weight of the microfibers is at least 10 weight percent based on the weight of the middle layer (4).
15. The multilayer textile according to any of claims 1 to 14, wherein the surface layers (2, 3) have a three-dimensional relief structure.
16. The multilayered textile according to any one of claims 1 to 15, wherein the total weight per unit area of the textile (1) is 200g/m2To 500g/m2In the meantime.
17. The multilayer textile according to any of claims 1 to 16, wherein the total thickness of the textile (1) is between 1.5mm and 5 mm.
CN202080042865.8A 2019-07-10 2020-06-17 Multi-layer textile Pending CN114025952A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102019118630.7A DE102019118630A1 (en) 2019-07-10 2019-07-10 Multi-layer textile structure
DE102019118630.7 2019-07-10
PCT/EP2020/066662 WO2021004737A1 (en) 2019-07-10 2020-06-17 Multi-layer textile fabric

Publications (1)

Publication Number Publication Date
CN114025952A true CN114025952A (en) 2022-02-08

Family

ID=71105468

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202080042865.8A Pending CN114025952A (en) 2019-07-10 2020-06-17 Multi-layer textile

Country Status (4)

Country Link
EP (1) EP3996908A1 (en)
CN (1) CN114025952A (en)
DE (1) DE102019118630A1 (en)
WO (1) WO2021004737A1 (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5817391A (en) * 1997-04-17 1998-10-06 Malden Mills Industries, Inc. Three-dimensional knit spacer fabric for bed pads
EP0953314A1 (en) * 1998-04-30 1999-11-03 Sanamundi Aktiengesellschaft Cleaning cloth
WO2014166611A1 (en) * 2013-04-11 2014-10-16 Carl Freudenberg Kg Mop and method for producing the cleaning strips of the mop
DE202016006492U1 (en) * 2016-10-19 2016-10-27 Delu Ako Minky GmbH Reiniqungspad, in the form of a flat piece of material with a non-woven surface
WO2017032778A1 (en) * 2015-08-26 2017-03-02 Carl Freudenberg Kg Cleaning textile
CN107206733A (en) * 2015-02-05 2017-09-26 Avet股份公司 Cloth for wiping or dusting
US20190029490A1 (en) * 2016-03-09 2019-01-31 Decitex Care item and cleaning device comprising such a care item
JP2019041861A (en) * 2017-08-30 2019-03-22 ユニチカトレーディング株式会社 Wiping cloth
CN109562591A (en) * 2016-08-12 2019-04-02 卡尔·弗罗伊登伯格公司 Woven face formula construct, its application and the cleaning device including the woven face formula construct

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Publication number Priority date Publication date Assignee Title
US4675226A (en) * 1986-07-07 1987-06-23 Ott Hoye L Stitchbonded composite wiper
US5735145A (en) * 1996-05-20 1998-04-07 Monarch Knitting Machinery Corporation Weft knit wicking fabric and method of making same
US7601655B2 (en) * 2003-09-27 2009-10-13 Tactix Llc Engineered toweling
DE102004024134B4 (en) * 2004-05-14 2011-11-03 Sächsisches Textilforschungsinstitut e.V. Absorbent textile structure
DE202008016926U1 (en) * 2008-12-23 2009-03-12 Mcairlaid's Vliesstoffe Gmbh & Co. Kg Cellulose cloth
EP3743550B1 (en) * 2018-01-25 2023-08-02 Mission Product Holdings, Inc. Dual function absorbing and cooling textile

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5817391A (en) * 1997-04-17 1998-10-06 Malden Mills Industries, Inc. Three-dimensional knit spacer fabric for bed pads
EP0953314A1 (en) * 1998-04-30 1999-11-03 Sanamundi Aktiengesellschaft Cleaning cloth
WO2014166611A1 (en) * 2013-04-11 2014-10-16 Carl Freudenberg Kg Mop and method for producing the cleaning strips of the mop
CN107206733A (en) * 2015-02-05 2017-09-26 Avet股份公司 Cloth for wiping or dusting
WO2017032778A1 (en) * 2015-08-26 2017-03-02 Carl Freudenberg Kg Cleaning textile
US20190029490A1 (en) * 2016-03-09 2019-01-31 Decitex Care item and cleaning device comprising such a care item
CN109562591A (en) * 2016-08-12 2019-04-02 卡尔·弗罗伊登伯格公司 Woven face formula construct, its application and the cleaning device including the woven face formula construct
DE202016006492U1 (en) * 2016-10-19 2016-10-27 Delu Ako Minky GmbH Reiniqungspad, in the form of a flat piece of material with a non-woven surface
JP2019041861A (en) * 2017-08-30 2019-03-22 ユニチカトレーディング株式会社 Wiping cloth

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Publication number Publication date
DE102019118630A1 (en) 2021-01-14
EP3996908A1 (en) 2022-05-18
WO2021004737A1 (en) 2021-01-14

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