Classifications

• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
  • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
  • D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
  • D04H3/105—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by needling
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
  • D04H3/016—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the fineness
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
  • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
  • A47L13/16—Cloths; Pads; Sponges
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B08—CLEANING
  • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
  • B08B1/00—Cleaning by methods involving the use of tools
  • B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
  • B08B1/14—Wipes; Absorbent members, e.g. swabs or sponges
  • B08B1/143—Wipes
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
  • D01D5/00—Formation of filaments, threads, or the like
  • D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
  • D01D5/30—Conjugate filaments; Spinnerette packs therefor
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
  • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
  • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
  • D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
  • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
  • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
  • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H13/00—Other non-woven fabrics
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
  • D04H3/005—Synthetic yarns or filaments
  • D04H3/009—Condensation or reaction polymers
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
  • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
  • D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
  • D04H3/11—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by fluid jet
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
  • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
  • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
  • D04H5/02—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
  • D04H5/02—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling
  • D04H5/03—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling by fluid jet

Definitions

• the invention relates to a clean room cleaning cloth consisting of a microfilament nonwoven fabric with basis weights of 30 to 300 g / m 2 .
• Cleanrooms are increasingly used for the manufacture, inspection and maintenance of precision products, where it is very important that various work steps take place in an environment that is largely free of small particles.
• the improvements in the production of high-tech products such as microelectronic circuits, optical or pharmaceutical products place ever increasing demands on the particle content of the clean rooms, typically for a class 100 clean room in the range of up to 100 particles in the size> 0, 5 ⁇ m per cubic foot of indoor air or in the equivalent metric purity class M 3.5 of no more than 3530 particles in the size of> 0.5 ⁇ m per cubic meter of indoor air [per million (parts per miliion - ppm) or increasingly in particles per billion ( parts per billion - ppb)] is required.
• the integrated circuits are produced on so-called "wafers", thin silicon single-crystal wafers.
• the integrated circuits require an exact electrical connection of the transistors and the other electrical components to one another.
• the individual circuit components are connected to one another by an electrically conductive film, which is made of vapor-deposited metal the conductor track structures are produced by a photo-etching process.
• An insulation layer between the semiconductor elements underneath and the evaporated metal layer permits an electrical connection only at the locations provided for this purpose.
• the insulation layer is applied to the surface of the “wafer” after the individual components have been produced, but before the “wafer” is vapor-deposited with the conductive metal to produce the interconnect structure. Contamination such as fiber fragments or dust particles can lead to short circuits between the components and thus at least to a partial failure of the circuit functions provided. Therefore, a basic requirement is to keep all surfaces and workpieces as free as possible from these contaminants.
• Woven or knitted cleaning wipes are known from documents US 4,888,229 and US 5,229,181, which are intended to prevent the release of lint or fiber fragments due to the special edging of their edges. Furthermore, from US Pat. Nos. 4,328,279 and 5,736,469, cleanroom cleaning wipes are known which consist of nonwovens. A chemical size is applied to the surface of the fibers forming the nonwovens to reduce the amount of extractable ions or to reduce the electrostatic charge.
• the documents US 5,320,900 and US 5,645,916 describe clean room cleaning wipes which consist of fiber mixtures and have been consolidated into nonwovens by means of a water jet treatment. Synthetic fibers such as polyester and regenerated cellulose or cellulose fibers are specified as fibers.
• a disadvantage of the known cleanroom cleaning wipes is that they cannot be subjected to a washing process without which the highest cleanroom classes 10 or better cannot be achieved. Therefore, these classes can only be served today with fabrics or knitted continuous filaments.
• the invention has set itself the task of providing inexpensive, washable cleanroom cleaning cloth which meets the requirements of cleanroom class 100, and a method for its production. By means of a subsequent clean room washing process, the clean room cleaning cloth according to the invention based on microfilament spunbonded nonwoven can be used in clean room class 10 or better.
• the object is achieved by a clean room cleaning cloth which is made of a microfilament nonwoven fabric with basis weights of 30 to 300 g / m ? , wherein the nonwoven fabric consists of melt-spun, aerodynamically stretched and immediately deposited into a nonwoven multi-component continuous filament with a titer of 1.5 to 5 dtex and the multi-component continuous filament at least 80% to micro-continuous filament with a titer of 0.1 to 1 , 0 dtex are tracked and solidified.
• a clean room cleaning cloth has a surface structure into which dust particles and liquids penetrate well and are held therein.
• the cleanroom cleaning cloth is preferably one in which the nonwoven fabric consists of melt-spun, aerodynamically stretched, and multi-component continuous filaments with a titer of 2 to 3 dtex, which are immediately deposited to form a nonwoven, and the multi-component continuous filaments are at least 80% micro-continuous filaments with a titer from 0.1 to 0.3 dtex are split and solidified.
• the cleanroom cleaning cloth is preferably one in which the multi-component continuous filament is a bicomponent continuous filament made of two incompatible polymers, in particular a polyester and a polyamide. is.
• a bicomponent filament has good cleavage in super micro filaments and brings about a favorable ratio of strength to basis weight.
• the cleanroom cleaning cloth is preferably one in which the multicomponent continuous filaments have a cross section with an orange-like or also called “pie” structure, the segments alternately each containing one of the two incompatible polymers.
• the multicomponent continuous filaments have a cross section with an orange-like or also called “pie” structure, the segments alternately each containing one of the two incompatible polymers.
• a filament-side-by-side (s / s) arrangement of the incompatible polymers in the multicomponent filament is also possible, which is preferably used to produce crimped filaments, such arrangements of the incompatible polymers in the multicomponent filament have proven to be very easily cleavable.
• the cleanroom cleaning cloth is preferably also one in which at least one of the incompatible polymers forming the multi-component continuous filament contains an additive, such as color pigments, permanently acting antistatic agents and / or additives which influence the hydrophilic or hydrophobic properties, in the maximum amounts required the permissible extractability values in water and isopropanol are sufficient.
• the cleanroom cleaning cloth made of spun-dyed filaments has a very good wash resistance. Furthermore, the additives can reduce or avoid static charges and improve the moisture transport properties.
• the process according to the invention for producing a clean room cleaning cloth consists in spinning multicomponent continuous filaments from the melt, aerodynamically stretching them and laying them down immediately to form a nonwoven fabric, if necessary pre-consolidation and the nonwoven fabric being consolidated by high-pressure fluid jets, as at the same time in micro- Continuous filaments with a titer of 0.1 to 1.0 dtex is preferably split with a titer of 0.1 to 0.3 dtex.
• the clean room cleaning cloth obtained in this way is very uniform in terms of its thickness, it has an isotropic thread distribution, has no tendency to delaminate and is distinguished by high modulus values.
• the process for producing the cleanroom cleaning cloth is advantageously carried out in such a way that the solidification and splitting of the multicomponent continuous filaments takes place in that the nonwoven fabric is subjected to high pressure water jets at least once on each side.
• the clean room cleaning cloth therefore has a good surface and a degree of splitting of the multi-component continuous filaments> 80%.
• the clean room cleaning cloth according to the invention is also characterized by its good specific water absorption and a short drying time.
• the clean room cleaning cloth can be used multiple times as a wipe or dust cloth.
• the clean room cleaning cloth preferably meets the requirements of industrial clean room washability and can be used for clean room class 10 or better.
• a "pie" filament pile with a basis weight of 57 g / m 2 is produced from a polyethylene terephthalate poly (hexamethylene diamine adipad) (PET-PA66) bicomponent filament and subjected to water jet needling at pressures of up to 250 bar on both sides.
• PET-PA66 polyethylene terephthalate poly (hexamethylene diamine adipad)
• the bicomponent filaments point after water jet needling, which leads to simultaneous splitting of the starting filaments, a titer of approx. 0.1 dtex.
• a (s / s) filament pile with a basis weight of 65 g / m 2 is produced from a polyethylene terephthalate poly (hexamethylene diamine adipad) (PET-PA66) bicomponent filament and subjected to water jet needling at pressures of up to 250 bar on both sides. After the water jet needling, which leads to simultaneous splitting of the starting filaments, the bicomponent filaments have a titer of approximately 1.0 dtex.
• a (s / s) filament pile with a basis weight of 80 g / m 2 is produced from a polyethylene terephthalate poly (hexamethylene diamine adipad) (PET-PA66) bicomponent filament with a weight ratio of PET to PA66 of 60 to 40 and water jet needling subjected to pressures up to 250 bar on both sides. After the water jet needling, the bicomponent filaments point to a simultaneous splitting of the Starting filaments have a titer of approximately 0.8 dtex and a crimped filament structure.
• PET-PA66 polyethylene terephthalate poly (hexamethylene diamine adipad)
• PET-PA6 Polyethylene terephthalate poly (caprolactam)
• Bicomponent continuous filament is produced from a (PIE) filament pile with a basis weight of 70 g / m 2 and subjected to water jet needling with pressures of up to 250 bar on both sides. After the water jet needling, which leads to simultaneous splitting of the starting filaments, the bicomponent filaments have a titer of approx. 0.1 dtex.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Nonwoven Fabrics (AREA)
• Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
• Woven Fabrics (AREA)
• Ventilation (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (2)

Family

ID=7930923

Family Applications (1)

Country Status (9)

Cited By (7)

Families Citing this family (6)

Family Cites Families (12)

• 1999
  • 1999-11-30 DE DE19957693A patent/DE19957693C2/de not_active Expired - Fee Related
• 2000
  • 2000-11-21 CN CNB008164746A patent/CN1158044C/zh not_active Expired - Fee Related
  • 2000-11-21 EP EP00989869A patent/EP1234066B1/de not_active Expired - Lifetime
  • 2000-11-21 AT AT00989869T patent/ATE278827T1/de not_active IP Right Cessation
  • 2000-11-21 JP JP2001542621A patent/JP2003515407A/ja active Pending
  • 2000-11-21 DE DE50008157T patent/DE50008157D1/de not_active Expired - Lifetime
  • 2000-11-21 KR KR10-2002-7006922A patent/KR100491846B1/ko not_active Expired - Lifetime
  • 2000-11-21 ES ES00989869T patent/ES2226974T3/es not_active Expired - Lifetime
  • 2000-11-21 AU AU26672/01A patent/AU2667201A/en not_active Abandoned
  • 2000-11-21 WO PCT/EP2000/011584 patent/WO2001040558A2/de active IP Right Grant

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