WO2000037724A2 - Nonwoven fabrics for wiping applications - Google Patents
Nonwoven fabrics for wiping applications Download PDFInfo
- Publication number
- WO2000037724A2 WO2000037724A2 PCT/US1999/030481 US9930481W WO0037724A2 WO 2000037724 A2 WO2000037724 A2 WO 2000037724A2 US 9930481 W US9930481 W US 9930481W WO 0037724 A2 WO0037724 A2 WO 0037724A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fabric
- wiping
- particles
- challenge
- fabrics
- Prior art date
Links
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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/425—Cellulose series
- D04H1/4258—Regenerated cellulose series
-
- 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
-
- 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/435—Polyesters
-
- 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43825—Composite fibres
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/69—Autogenously bonded nonwoven fabric
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/696—Including strand or fiber material which is stated to have specific attributes [e.g., heat or fire resistance, chemical or solvent resistance, high absorption for aqueous compositions, water solubility, heat shrinkability, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/697—Containing at least two chemically different strand or fiber materials
Definitions
- the invention relates to fabrics for use in wiping liquids and/or particles from surfaces.
- Certain types of fabrics are used to wipe surfaces. This could range from merely wiping up liquids from a kitchen counter in the home to wiping surfaces in cleanrooms where it is critical that preferably no particles or only a very minimum level of particles remain on the wiped surface.
- du Pont de Nemours and Company DuPont
- Such nonwovens have been used in cleanrooms rated as Class 100 or higher in accordance with Federal Standard 209E, September 11, 1992, however, typically they have not been fully accepted as suitable for critical cleanroom applications rated as Class 10 or lower (i.e., cleaner).
- the standard shows the maximum number of airborne particulates at a given size.
- Class 100 has a maximum of 100 particles per cubic foot at a size of 0.5 micrometer
- Class 10 has a maximum of 10 particles per cubic foot at the same size.
- the fabrics, such as Sontara ® were typically made by hydroentangling as disclosed in U.S. 3,485,706 to Evans, which is incorporated by reference.
- Hydroentangled fabrics made of 100% polyester were found not suitable for critical cleanroom applications because they were too hydrophobic. Hydrophilicity can be imparted to fabrics by laundering whereby the fabrics receive surfactants, but hydroentangled fabrics were not typically durable enough to withstand such launderings. Laundering would cause the fabrics to become fuzzy and to disentangle. When binders were added to the hydroentangled fabrics to increase durability, the fabrics were not sufficiently hydrophilic for wiping applications.
- This invention is directed to a wiping material comprising a polyester nonwoven fabric that has been cleanroom laundered and is adapted for use in cleanrooms rated as Class 10 or cleaner.
- the invention is also directed to a method of using a nonwoven fabric for wiping in cleanrooms rated as Class 10 or cleaner.
- wipe-dry is not merely a desirable feature in a cleanroom wiping material from a housekeeping point of view, but is a critical feature in wiping up spills of dirty liquids and, by extension, in the removal of particles from surfaces. It has been determined that the inherent cleanliness of wiping materials (a property predicated upon the burden of particles already present in the wiper) is of less importance in selecting wiping materials for removing liquids from surfaces than is the ability of those same wiping materials to wipe surfaces dry.
- the primary focus has generally been directed toward determining how many particles are present in or on the wiper or how many particles are released from the wiper in response to the administration of stress.
- wipers were tested in a dry state, the currently accepted practice is that the generation, collection and enumeration of particles be accomplished with the wipers in a wetted condition.
- the following two methods are among the most useful of these wet tests.
- the first is a test for the number of readily releasable particles found on a wiper as set forth in Martina, C. F., and Paley, S. J., "Assessing Wiping Materials for their Potential to Contribute Particles to Clean Environments: A Novel Approach," Particles in Liquids and Gases 2: Detection Characterization and Control, K. L. Mittal, editor, 117-128, Plenum Publishing Corporation, New York (1990).
- a second method involves the construction of a characteristic curve for each wiper as presented in Martina, C. F., and Paley, S.
- a wiping speed of 25 cm/s was used as being more realistic of actual wiping than 50 cm/s.
- a 50-cm stainless steel tray was used whose inside long dimension of 45 cm provided a free distance of about 36 cm in front of a 1-kg sled.
- the sled's footprint had dimensions of 114 mm on an edge to accommodate wiping materials that had been quarter-folded from their most common size of 229 mm by 229 mm (9 inches by 9 inches).
- the liquid challenge was placed in front of the sled which was pulled into and through the pool, which more closely resembles the phenomenon of wiping up real spills.
- balance top loading, shielded, 0.01-g readability tray: stainless steel, inside dimensions 45 cm x 28 cm x 7 cm, sufficient size to contain water where particles are enumerated; see below for description sled: stainless steel, 1 kg, 114 mm x 114 mm base; a curved leading edge on the base of the sled forms a lip to which the quarter-folded sample is attached using a spring-loaded clip.
- Quarter-fold a single ply of wiping material (nominally, 229 by 229 mm) and determine its dry mass, M d , to the nearest 0.01 g. 2. Clip the quarter-folded wiper to the sled so that the single convex fold is at the leading edge. 3. Position the sled at one end of the stainless steel tray with the leading edge perpendicular to the axis of the long dimension of the tray.
- N the intrinsic sorptive capacity of a wiper. If the intrinsic sorptive capacity, N, of a wiper is not already known, determine it on a separate ply of the material using the procedure of IEST - RP-CC004.2 as referenced above. From the calculated N and the measured mass of each wiper, calculate the per-ply capacity N p [mL/g] for each wiper. This quantity is needed in order to know what fraction of the sorptive capacity is represented by each volume of liquid challenge.
- DWE can be presented as a function of the absolute volume of the challenge, v c and as a function of the challenge relative to N.
- the relative challenge is expressed as 100 v A ⁇ .
- Particle Removal ability To measure the ability of wipers to remove particles from surfaces, the test for dynamic wiping efficiency was combined with certain elements of the test described by Martina, et al., above, for quantifying the number of particles left behind on a surface which originate with the wiper. Differences were the addition to the liquid challenge of a known number of poly(styrene) spheres and also the use of quarter-folded samples instead of unfolded samples. The result from this procedure was termed "particle removal ability," or PRA. For all practical purposes, the tests for DWE and PRA is one test, performed either with or without particles added to the liquid challenge.
- a quarter-folded wiper (attached as described above to the underside of the sled and pulled across a clean stainless steel pan) was drawn through a challenge of water in which were dispersed poly(styrene) spheres of known dimension and concentration. After the sled and fabric were removed from the tray, the particles and liquid remaining on the tray were dispersed in clean water and counted with a discrete-particle counter. The particles left behind from the challenge were presented versus the volume of the liquid challenge, v c , and versus the challenge expressed as a percentage of the fabric's sorptive capacity, 100 v ⁇ N-,.
- the water challenge was dosed with a fairly large number of spheres, (about 10 x 10 6 ), so that, after wiping and subsequent dilution, a sufficient number of the spheres would remain so as to be distinguishable from the background count of the clean water.
- spheres with diameters of 1.59 micrometers were chosen so that measurements could be safely made in the 1.0 to 3.0 micrometer channel of the discrete-particle counter.
- the spheres were deposited using a micro- liter syringe, the plunger of which was incrementally adjusted until 10 x 10 6 spheres could be delivered reproducibly. This portion of the work was done in a horizontal, laminar-flow clean workstation (Atmos Tech, Model 6302).
- spheres poly(styrene), particle-deposition standards, Duke Scientific Surf-Cal Scanner, PD 1600, 1.59 micrometers at a concentration of 3 x lOVmL syringe: Hamilton, 50 microliters water: Millipore system consisting of a reverse osmosis unit (Milli-RO 10 Plus), an arrangement of filters and ion exchange beds Milli-Q UF Plus), and a 0.2 micrometer filter (Millipak 40) at the point of use particle counter: PMS Microlaser Particle Spectrometer ( ⁇ LPS) fitted with a Corrosive Liquid Sampler, Model 200
- PRA can be presented as a function of the absolute volume of the challenge, v c and as a function of the challenge relative to N.
- the relative challenge is expressed as 100 v ⁇
- Example 1 was DURXTM 670, a hydroentangled, nonpatterned nonwoven fabric of 55% wood pulp and 45% (poly)ethyleneterephthalate having an average basis weight of 70.6 grams per square meter (g/m 2 ). The material is available from Berkshire Corporation, Great Barrington, MA.
- Example 2 was MICROFIRSTTM, a hydroentangled, 24-mesh patterned nonwoven fabric of 45% wood pulp and 55% (poly)ethyleneterephthalate having an average basis weight of 54.2 g/m 2 .
- the material is available from Berkshire Corporation.
- Comparative Example 3 was SUPERPOLX 1200TM, a cleanroom laundered, knitted, fabric of 100% (poly)ethyleneterephthalate having an average basis weight of 154 g/m 2 and with unsealed edges. The material is available from Berkshire Corporation.
- Example 4 was DyNamixTM 4990Q, a hydroentangled, 40-mesh patterned nonwoven fabric of 42% lyocell and 58% (poly)ethyleneterephthalate having an average basis weight of 75.2 g/m 2 .
- the material is available from Berkshire Corporation.
- Example 5 was DyNamixTM 6900Q, a cleanroom laundered, hydroentangled fabric of 100% (poly)ethyleneterephthalate having an average basis weight of 112 g/m 2 .
- the starting nonwoven fabric is Sontara ® 8007 which was cleanroom laundered as indicated below.
- the laundered material DyNamixTM 6900Q is available from Berkshire Corporation.
- Comparative Example 6 was Tex Wipe® TX309, a woven fabric of 100% cotton having an average basis weight of 173 g/m 2 .
- the material is available from The Texwipe Company, Upper Saddle River, NJ.
- Comparative Example 7 was Alpha 10® TX1010, a cleanroom laundered, knitted, fabric of 100% (poly)ethyleneterephthalate having an average basis weight of 141 g/m 2 and with sealed edges. The material is available from the Texwipe Company.
- Comparative Example 8 was PRO WIPE 880, a spunbonded fabric of 100% (poly)propylene having an average basis weight of 85.9 g/m 2 .
- the material is available from Berkshire Corporation.
- Example 9 was DyNamixTM 5900Q, a hydroentangled fabric of 100% lyocell having an average basis weight of 102 g/m 2 .
- the material is available from Berkshire Corporation.
- sorptive capacity and the releasable particles were determined for each example using the Po test which is found in IEST-RP-CC0004.2. The results are presented in the following table. It is further noted that the following results were for particles in the 1-3 micrometer range. Sorptive capacity is expressed in mL/g and releasable particles as lOVm 2 .
- Example 5 exhibited very good properties conducive to critical cleanroom wiping applications, especially as tested by the newly developed methods.
- the hydroentangled lyocell fabric of Example 9 was found to be an excellent candidate for critical cleanroom applications, particularly in dynamic wiping efficiency (DWE).
- DWE dynamic wiping efficiency
- the results of the particle removal ability (PRA) tests showed that hydroentangled fabrics of pulp/polyester (Examples 1 and 2) and lyocell/polyester (Example 4)had surprisingly higher ratings especially when tested at volumes of challenge liquids that exceeded the intrinsic sorptive capacity of the material.
- the subject nonwoven fabrics equal and often exceed the performance of knitted fabrics in the comparative exmples that heretofore were considered the industry standard, especially in cleanroom applications. It is also noted that a meltspun nonwoven fabric having substantially continuous filament polymer fibers would be useful in the subject invention. Such fabrics have continuous filaments, as do the aforementioned knitted fabrics.
- the polymer fibers can be polyesters or polypropylene or bicomponent fibers of polyester and polypropylene as described in co-pending U.S. Patent Application with Docket Number SS-2911 , filed on Decmber 20, 1999 and also assigned to DuPont.
- Example 10 is a cleanroom laundered DyNamixTM 6900QL as used in Example 5, above.
- Comparative Example 11 is Sontara® style 8007, which is essentially the same fabric as in Example 10 except that it was not cleanroom laundered.
- Comparative Example 12 was Sontara® style 8000 with a low basis weight of 39.9 g/m 2 that was not laundered, but treated with surfactant to improve its sorptive properties.
- Comparative Example 13 is SUPERPOLX 1200, a polyester knit having been cleanroom laundered as in Example 3, above.
- PRA 10 L challenge 11 5310 1 ply 3 ply 73 10 3 Part. Left on surface 498 13.6
- the inventive Example 10 exhibits excellent cleanliness data, low fiber shedding, and excellent sorbency. It also exceeds the unlaundered example in ion contamination.
- Comparative Example 11 is reasonably clean based on biaxial shake number, but exhibits medium to high fiber shedding, and very poor sorbency.
- Comparative Example 12 is deficient by comparison in particle burden, sorbency capacity and rate, extractable matter, and ion burden.
- the treatment with surfactants while helpful in increasing sorptivity, resulted in greater amounts of undesirable ions.
- Comparative Example 13 is similar to the inventive fabric in terms of biaxial shake particles and ions. Being continuous filament, it excels in low fiber shedding, but it did not perform as well as the inventive fabric in sorptive capacity.
- the Particle Removal Ability results show the superior cleaning ability of the inventive fabric of Example 10, which left only 11,000 particles from a 10 million-particle challenge compared to 5.3 million particles left by its unlaundered counterpart, Comparative Example 11. Particularly relevant is that Example 10 out-performed Comparative Example 13, which left 73,000 particles in its wake. It is especially surprising that the inventive fabric combined excellent cleanliness properties as determined by conventional static means, as well as superior sorptive properties and excellent performance in particle removability (functional cleanliness).
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002351723A CA2351723A1 (en) | 1998-12-21 | 1999-12-21 | Nonwoven fabrics for wiping applications |
JP2000589771A JP2002533139A (en) | 1998-12-21 | 1999-12-21 | Nonwoven fabric for wiping |
EP99968157A EP1139851A2 (en) | 1998-12-21 | 1999-12-21 | Nonwoven fabrics for wiping applications |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11318998P | 1998-12-21 | 1998-12-21 | |
US60/113,189 | 1998-12-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000037724A2 true WO2000037724A2 (en) | 2000-06-29 |
WO2000037724A3 WO2000037724A3 (en) | 2000-08-03 |
Family
ID=22348049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/030481 WO2000037724A2 (en) | 1998-12-21 | 1999-12-21 | Nonwoven fabrics for wiping applications |
Country Status (8)
Country | Link |
---|---|
US (1) | US20040198128A1 (en) |
EP (1) | EP1139851A2 (en) |
JP (1) | JP2002533139A (en) |
KR (1) | KR100441928B1 (en) |
CN (1) | CN1192134C (en) |
CA (1) | CA2351723A1 (en) |
ID (1) | ID28961A (en) |
WO (1) | WO2000037724A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018184043A1 (en) * | 2017-04-03 | 2018-10-11 | Lenzing Ag | A nonwoven web designed for use in a clean room wipe |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5933262B2 (en) * | 2008-08-06 | 2016-06-08 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | Fluid absorbent article |
JP6377399B2 (en) * | 2014-04-25 | 2018-08-22 | 株式会社イノアックコーポレーション | Wiping material |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4888229A (en) * | 1988-04-08 | 1989-12-19 | The Texwipe Company | Wipers for cleanroom use |
EP0411752A1 (en) * | 1989-06-30 | 1991-02-06 | The Dexter Corporation | Method for hydroentangling non-woven fibrous sheets |
US5346287A (en) * | 1991-05-07 | 1994-09-13 | The Morgan Crucible Company Plc | Low contamination swab employing tubular knit fabric |
US5645916A (en) * | 1992-03-31 | 1997-07-08 | E. I. Du Pont De Nemours And Company | Patterned spunlaced fabrics containing woodpulp or abaca fibers |
GB2309466A (en) * | 1996-01-29 | 1997-07-30 | Courtaulds Fibres | A nonwoven cellulose fabric |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3485706A (en) * | 1968-01-18 | 1969-12-23 | Du Pont | Textile-like patterned nonwoven fabrics and their production |
US4093190A (en) * | 1975-06-25 | 1978-06-06 | Creusot-Loire | Process for the protection of a refractory wall in service |
US4328279A (en) * | 1981-01-29 | 1982-05-04 | Kimberly-Clark Corporation | Clean room wiper |
US5240764A (en) * | 1992-05-13 | 1993-08-31 | E. I. Du Pont De Nemours And Company | Process for making spunlaced nonwoven fabrics |
US5320900A (en) * | 1993-08-10 | 1994-06-14 | E. I. Du Pont De Nemours And Company | High absorbency cleanroom wipes having low particles |
-
1999
- 1999-12-21 EP EP99968157A patent/EP1139851A2/en not_active Withdrawn
- 1999-12-21 CN CNB998148431A patent/CN1192134C/en not_active Expired - Fee Related
- 1999-12-21 JP JP2000589771A patent/JP2002533139A/en active Pending
- 1999-12-21 ID IDW00200101326A patent/ID28961A/en unknown
- 1999-12-21 CA CA002351723A patent/CA2351723A1/en not_active Abandoned
- 1999-12-21 WO PCT/US1999/030481 patent/WO2000037724A2/en not_active Application Discontinuation
- 1999-12-21 KR KR10-2001-7007791A patent/KR100441928B1/en not_active IP Right Cessation
-
2004
- 2004-04-28 US US10/833,422 patent/US20040198128A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4888229A (en) * | 1988-04-08 | 1989-12-19 | The Texwipe Company | Wipers for cleanroom use |
US4888229B1 (en) * | 1988-04-08 | 1992-06-16 | Teven J Paley | |
EP0411752A1 (en) * | 1989-06-30 | 1991-02-06 | The Dexter Corporation | Method for hydroentangling non-woven fibrous sheets |
US5346287A (en) * | 1991-05-07 | 1994-09-13 | The Morgan Crucible Company Plc | Low contamination swab employing tubular knit fabric |
US5645916A (en) * | 1992-03-31 | 1997-07-08 | E. I. Du Pont De Nemours And Company | Patterned spunlaced fabrics containing woodpulp or abaca fibers |
GB2309466A (en) * | 1996-01-29 | 1997-07-30 | Courtaulds Fibres | A nonwoven cellulose fabric |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018184043A1 (en) * | 2017-04-03 | 2018-10-11 | Lenzing Ag | A nonwoven web designed for use in a clean room wipe |
Also Published As
Publication number | Publication date |
---|---|
CN1192134C (en) | 2005-03-09 |
US20040198128A1 (en) | 2004-10-07 |
CN1331569A (en) | 2002-01-16 |
KR20010099853A (en) | 2001-11-09 |
CA2351723A1 (en) | 2000-06-29 |
KR100441928B1 (en) | 2004-07-27 |
ID28961A (en) | 2001-07-19 |
WO2000037724A3 (en) | 2000-08-03 |
JP2002533139A (en) | 2002-10-08 |
EP1139851A2 (en) | 2001-10-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Choi et al. | Oil sorption behavior of various sorbents studied by sorption capacity measurement and environmental scanning electron microscopy | |
JPS6047845B2 (en) | Microfiber oil and water wipes | |
KR100235416B1 (en) | High absorbency cleanroom wipes having low particles | |
US20150107039A1 (en) | Textile Fabric With Particle Attracting Finish | |
JP2002088660A (en) | Wiper base fabric | |
US7745358B2 (en) | Abrasion-resistant nonwoven fabric for cleaning printer machines | |
CN106310789A (en) | Low-gram weight ultra-fined fiber ultra-clean filtering high-temperature filter material and production method thereof | |
WO2007067413A1 (en) | Wiping material | |
US20040198128A1 (en) | Nonwoven fabrics for wiping applications | |
EP0917852B1 (en) | Wiper and method for its manufacture | |
JPH1088451A (en) | Wiping cloth and its production | |
Brown et al. | Oil take up and removal by washing from polyester, polyester/cotton blend and other fabrics | |
KR100577138B1 (en) | Porous Polyolefin Sorbent Material Containing a Wetting Agent | |
AU2001248672B2 (en) | Knitted microfiber cleaning cloth | |
Oathout | Determining the dynamic efficiency of cleanroom wipers for removal of liquids and particles from surfaces | |
CN109843140A (en) | It cleans and uses wet type sheet material | |
CN113046921B (en) | MOFs modified ECTFE wood pulp composite non-woven material and production process and application thereof | |
WO2001080706A1 (en) | Wiper with particle attracting finish | |
WO1997049855A1 (en) | Hydrophilic fibers and cloth-like articles and filters made by using the same | |
WO1999041024A1 (en) | Oil absorption and reclamation methods | |
Oathout | Determining the dynamic efficiency with which wiping materials remove liquids from surfaces | |
NL2025885B1 (en) | Cleaning cloth having a dual cleaning function | |
CN101218389A (en) | Cleanroom wiper | |
CN117904875A (en) | Wear-resistant reinforced flexible fiber material and preparation method thereof | |
Harding | Clean room wiping cloths |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 99814843.1 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): CA CN ID JP KR SG |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
AK | Designated states |
Kind code of ref document: A3 Designated state(s): CA CN ID JP KR SG |
|
AL | Designated countries for regional patents |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
ENP | Entry into the national phase |
Ref document number: 2351723 Country of ref document: CA Ref document number: 2351723 Country of ref document: CA Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1999968157 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2000 589771 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020017007791 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 1999968157 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1020017007791 Country of ref document: KR |
|
WWG | Wipo information: grant in national office |
Ref document number: 1020017007791 Country of ref document: KR |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1999968157 Country of ref document: EP |