[go: up one dir, main page]

US20030072915A1 - Low contaminant wiper - Google Patents

Low contaminant wiper Download PDF

Info

Publication number
US20030072915A1
US20030072915A1 US09/976,412 US97641201A US2003072915A1 US 20030072915 A1 US20030072915 A1 US 20030072915A1 US 97641201 A US97641201 A US 97641201A US 2003072915 A1 US2003072915 A1 US 2003072915A1
Authority
US
United States
Prior art keywords
wiper
wiper according
perimeter
perimeter edge
segment
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.)
Abandoned
Application number
US09/976,412
Other languages
English (en)
Inventor
Creighton Kelly
David Hildreth
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.)
Milliken and Co
Original Assignee
Milliken and Co
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 Milliken and Co filed Critical Milliken and Co
Priority to US09/976,412 priority Critical patent/US20030072915A1/en
Assigned to MILLIKEN & COMPANY reassignment MILLIKEN & COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HILDRETH, DAVID D., KELLY, CREIGHTON C.
Priority to EP20020801625 priority patent/EP1434903A1/fr
Priority to KR10-2004-7005363A priority patent/KR20040054713A/ko
Priority to IL16107202A priority patent/IL161072A0/xx
Priority to JP2003536514A priority patent/JP2005505706A/ja
Priority to CNA028201566A priority patent/CN1568384A/zh
Priority to MXPA04003028A priority patent/MXPA04003028A/es
Priority to PCT/US2002/028775 priority patent/WO2003033799A1/fr
Priority to TW91122405A priority patent/TWI244519B/zh
Publication of US20030072915A1 publication Critical patent/US20030072915A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
    • D04B1/16—Other fabrics or articles characterised primarily by the use of particular thread materials synthetic threads
    • 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
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00—Woven fabrics designed to make specified articles
    • D03D1/0017—Woven household fabrics
    • D03D1/0023—Mobs or wipes
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/49—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads textured; curled; crimped
    • 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
    • D04H3/14—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 yarns or filaments produced by welding
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/04—Heat-responsive characteristics
    • D10B2401/041—Heat-responsive characteristics thermoplastic; thermosetting
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/2419—Fold at edge
    • 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.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • 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.]
    • Y10T442/40—Knit fabric [i.e., knit strand or strip material]
    • 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]

Definitions

  • This invention relates to the manufacturing of fabric wipers, in particular, wipers that release fewer and/or less offensive particulate contaminants while nonetheless exhibiting good sorbency and strength.
  • Wipers may be made from knitted, woven or non-woven fabrics of materials such as polyester and the like.
  • the typical manufacturing process begins with drawing and texturing continuous filament yarn.
  • the textured yarn is knitted or woven to construct a fabric, and the fabric is washed or scoured to remove spinning oils.
  • the fabric may be chemically modified in order to improve its wettability and performance.
  • the fabric is then dried in a “tenter frame” oven to remove moisture and heat set the fabric. Heat setting dissipates stress in the polyester fibers and stabilizes the fabric.
  • the fabric is cut into wipers, typically 9 inch by 9 inch squares.
  • the wipers may remain unlaundered or may be washed in a cleanroom laundry, employing special surfactants and highly-filtered and purified water, to reduce the contamination present on the fabric.
  • the wipers may be packaged dry in air-tight plastic bags, or pre-saturated with a suitable solvent before being packaged.
  • Diaber et al. U.S. Pat. No. 5,229,181 (incorporated by reference) describes a knit fabric tube, only two edges of which must be cut and sealed, thereby reducing the contamination caused by loose fibers from the edges.
  • Paley et al. U.S. Pat. No. 5,271,995, (incorporated by reference) describes a wiper for a cleanroom environment that has reduced inorganic contaminants through the use of a specific yarn, namely “nylon bright”.
  • Reynolds U.S. Pat. No. 5,069,735 (incorporated by reference) describes a procedure to cut the fabric into pieces using a hot air jet in the range of 600 to 800° F. to melt the fibers, forming a sealed edge product with reduced loose fiber contamination.
  • a low contaminant wiping cloth suitable for a wide range of applications is provided.
  • the wiper meets substantially all of the specifications for use in cleanrooms, particularly those specifications for Class 100 clean rooms and below.
  • a cleanroom wiper having a high liquid sorbency capacity is provided.
  • a wiping cloth which has substantially stable edges that do not undergo substantial particulate generating fracture upon application of tensile stresses applied during normal use.
  • a wiping cloth which incorporates yarns of substantially reduced inorganic ion content so as to reduce the effects of any particles which may be released.
  • FIG. 1 is an elevation plan view of one embodiment of a wiper according to the present invention
  • FIG. 2 is a view taken along line 2 - 2 in FIG. 1;
  • FIG. 3 is an elevation plan view of another embodiment of a wiper according to the present invention.
  • FIG. 4 is an elevation plan view of yet another embodiment of a wiper according to the present invention.
  • FIG. 5 is a view taken along line 5 - 5 in FIG. 4.
  • the wipers of the present invention may be constructed from a multiplicity of woven or knitted yarns of polyester fiber, preferably fibers of poly(ethylene terephthalate). Such yarn is preferably a continuous filament polyester yarn although other yarn types and constructions may likewise be utilized if necessary. It is contemplated that yarns having a wide variety of denier and filament count characteristics may be employed. Examples of useful yarns may include those having a denier to filament ratio of about 0.1 to about 10, incorporating deniers of about 15 to about 250. A wide range of fabric weights may be employed in the wipers of the present invention. Typically, the fabrics used for cleanroom wipers have a weight of about 1 to about 9 ounces per square yard, and more preferably about 3 to about 7 ounces per square yard.
  • the yarn employed in the fabric may be a textured polyester yarn.
  • Such yarns are commercially available and their manufacture is well known to those of skill in the art.
  • POY partially oriented yarn
  • a general description of the texturing process may be found in the Encyclopedia of Textiles, Fibers, and Non-woven Fabrics, Encyclopedia Reprint Series, Ed. Martin Grayson, pages 381-398, John Wylie and Sons (1984) and Dictionary of Fiber and Textile Technology, Hoechst Celanese (1989).
  • the yarn is preferably not heated above a temperature of 300° F. and is generally not heated above about 225° F.
  • the fabric is preferably subjected to washing and heat setting procedures as described in U.S. Pat. No. 6,189,189 to Morin et al. (incorporated by reference).
  • the fabric is preferably dried and heat set at a temperature from about 180° F. to about 300° F. and more preferably from 200° F. to 275° F. and most preferably from 225° F. to 265° F.
  • the heat set temperature is preferably set at a temperature higher than that which the yarns have previously experienced.
  • Such heat set treatment is believed to improve performance criteria applied to wipers for use in cleanroom environments including sorbency, as well as both the quantity and size of generated particles.
  • cleanroom wipers exhibit high levels of sorbency while generating low levels of particulate contaminants during use.
  • those particulate contaminants which may be generated have low levels of inorganic ionic constituents such as metallic constituents which may influence the performance of small scale integrated circuitry.
  • a wiper 10 formed of knitted polyester yarns is provided. While a knitted construction of substantially 100% polyester may be preferred, it is also contemplated that other constructions including woven and nonwoven constructions and other fibers including nylon and the like may also be utilized if desired.
  • the wiper 10 includes an interior wiping surface 12 and a multiplicity of perimeter edges.
  • the wiper 10 is of a substantially quadrilateral geometry such that the wiper 10 includes a first perimeter edge 14 and an opposing second perimeter edge 16 as well as a third perimeter edge 18 and a fourth perimeter edge 20 extending in a generally right angled relation between the first perimeter edge 14 and the second perimeter edge 16 .
  • wiper 10 is illustrated as being substantially square in configuration, it is likewise to be understood that the wiper 10 may take on any number of other geometries including by way of example only, and not limitation, a rectangular configuration or some other convenient multi-sided configuration such as a triangular, pentagonal, hexagonal, or octagonal geometry as may be desired.
  • the wiper 10 is cut from a much larger web of fabric having an extended length and a width sufficient to yield multiple wipers.
  • the wiper 10 is cut from such larger web of fabric according to a pattern such that the first and second perimeter edges 14 , 16 extend in the so called “cross-machine direction” disposed substantially transverse to the elongate direction of the fabric web.
  • the third and fourth perimeter edges 18 , 20 are preferably cut substantially along the so-called “machine direction” of the fabric generally parallel to the elongate direction of the fabric web.
  • first perimeter edge 14 and the second perimeter edge 16 extending in the cross-machine direction are each preferably provided along their length with a sealed edge 24 , 26 formed by a hot knife or laser cutting operation so as to seal the fibers along the raw cut edge of the wiper 10 .
  • first and second perimeter edges 14 , 16 are each preferably provided with an inwardly extending discontinuous fused border 28 , 30 extending inwardly from the adjacent sealed edges 24 , 26 towards the interior wiping surface 12 .
  • the discontinuous fused borders 28 , 30 are preferably made up of a multiplicity of discrete bond points 34 , 36 at which thermoplastic fibers such as polyester forming the wiper 10 have undergone localized melting thereby fusing together upon resolidification.
  • the bond points 34 , 36 extending in the cross-machine direction may be applied in a predefined repeating pattern utilizing a patterned embossing element such as an ultrasonic horn operating on one side of the fabric forming the wiper 10 in opposing relation to a surface patterned anvil disposed on the opposite side of the fabric forming the wiper 10 within a width corresponding to the desired width for the inwardly extending discontinuous fused borders 28 , 30 .
  • a patterned embossing element such as an ultrasonic horn operating on one side of the fabric forming the wiper 10 in opposing relation to a surface patterned anvil disposed on the opposite side of the fabric forming the wiper 10 within a width corresponding to the desired width for the inwardly extending discontinuous fused borders 28 , 30 .
  • other patterned fusion techniques may also be utilized such as using a patterned support on one side of the fabric and applying a hot ironing element across the opposing side so as to apply the series of bond points 34 ,
  • the discontinuous fused borders 28 , 30 extending in the cross-machine direction preferably have a relatively narrow width in the range of about 0.3 mm to about 1.6 mm and will most preferably have a width in the range of about 1.0 mm to about 1.4 mm although greater or lesser depths may likewise be utilized if desired.
  • the bond points 34 , 36 may be substantially rectangular in configuration arranged in a brick-like pattern within the discontinuous fused borders 28 , 30 such that the length dimension of the bond points 34 , 36 extends generally parallel to the outer sealed edges 24 , 26 .
  • the bond points may also be arranged in a pattern in the form of a message conveying icon such as a corporate logo, patent number or the like.
  • the rectangles forming the bond points are preferably in the range of about 0.75 mm wide by about 3 mm long and are spaced about 1 mm apart in defined rows. The rows are preferably about 0.5 mm apart with the bond points in adjacent rows being slightly offset from one another in another in a staggered relationship.
  • discontinuous fused borders 28 , 30 reduces the generation of particulate matter upon the application of tension in the direction parallel to such borders by allowing the force to be spread more evenly through the matrix formed by the interstitial areas between the bond points 34 , 36 thereby reducing the concentration of force which may lead to the localized breakage of fibers.
  • pre-stressing of the fabric may be carried out by stretching the fabric forming the wiper 10 during the introduction of the bond points 34 , 36 thereby essentially locking in a stretched relationship. Such stretching may be carried out by use of a stretching frame or by other means as will be well known to those of skill in the art. Upon release of the fabric following the introduction of bond points 34 , 36 a portion of the extension is relieved within the body of the wiper 10 but the bond points 34 , 36 serve to substantially lock in stretch along the perimeter edges 14 , 16 .
  • the third and fourth perimeter edges 18 , 20 extending in the machine direction preferably have a slightly different configuration.
  • the perimeter edges 18 , 20 extending in the machine direction of the wiper 10 are preferably formed by folding the edges inwardly so as to form double layer borders 38 , 40 .
  • melt fused attachment zones 48 , 50 are applied to thereby seal the double layer borders 38 , 40 in place.
  • the attachment zones 48 , 50 may be made up of a pattern of fusion bond points 44 , 46 formed by localized patterned melting of polyester or other thermoplastic fiber constituent in the manner described above.
  • the attachment zones 48 , 50 may also be in the form of solid melt fused strips extending inwardly from the inboard edge of the double layered borders 38 , 40 .
  • the double layer borders 38 , 40 which are preferably smooth and substantially free of fusion bond points provide an edge structure which is not substantially susceptible to fiber fracture upon stretching and is thus believed to promote the integrity of the edges during stretching thereby reducing the generation of particulates.
  • the attachment zones 48 , 50 are preferably broad enough such that a stable fusion bond relationship is established.
  • the attachment zones are made up of discrete bond points 44 , 46 as shown wherein the bond points 44 , 46 are of a substantially rectangular configuration having a width in the range of about 0.75 mm and a length in the range of about 3 mm arranged in an off-set brick pattern in rows approximately 0.5 mm apart, it is contemplated that at least about 3 and more preferably about 4 or more such rows are utilized.
  • the bond points 44 , 46 as described above in the relation to the fused borders 28 , 30 extending in the cross-machine direction may also be utilized if desired.
  • the bond points 44 , 46 disposed along the machine direction may be applied by use of any suitable patterned melt fusion device including by way of example only, and not limitation, an ultrasonic bonding apparatus using a rotating patterned anvil wheel or a patterned heat sink support used in conjunction with an ironing heat source.
  • the formation of the wiper 10 may be carried out in a highly efficient and automated manner by continuously slitting an elongate web of fabric to yield multiple parallel strips of desired width. This cutting may be carried out using a laser or hot knife to seal the lateral edges.
  • the strips are conveyed along a travel path through an edge folding apparatus at which a blade or paddle element is used to continuously fold the lateral edges of the strips so as to form the desired double layer borders 38 , 40 .
  • the strips are thereafter passed through ultrasonic bonding stations arranged generally transverse to the travel path of the strips at which the bond points 44 , 46 forming the fusion zones 48 , 50 along the lateral perimeter edges are applied.
  • the ultrasonic bonding stations used to form the bond points 44 , 46 within the fusion zones 48 , 50 may be generally similar to the device illustrated and described in U.S. Pat. No. 6,001,442 to Rockwell, Jr. (incorporated by reference) incorporating elongated horns and rail-like patterned anvils oriented in the direction of travel of the strips.
  • the inwardly extending discontinuous fused borders 28 , 30 extending in the cross machine direction are thereafter applied across the width of the segmented strips by ultrasonic bonding units incorporating an elongated horn and rail-like patterned backing anvil oriented generally transverse to the travel path of the strips.
  • the wiper 10 is segmented from the strip by use of a hot knife or laser, which serves to form the sealed edges 24 , 26 .
  • any number of other automated or manual techniques may likewise be utilized if desired.
  • FIG. 3 one such alternative construction is illustrated in FIG. 3 wherein elements corresponding to those described in relation to FIG. 1 are designated by like reference numerals increased by 100.
  • the embodiment of FIG. 3 is substantially identical to that of FIG. 1 except that the double layer borders 38 , 40 have been replaced by extended discontinuous fusion zones 148 , 150 which extend substantially to the adjacent perimeter edges 118 , 120 .
  • FIG. 4 there is illustrated yet another embodiment of the present invention wherein elements corresponding to those previously described in relation to FIG. 1 are designated by like reference numerals increased by 200.
  • the double layer folded edge structures are applied along each of the perimeter edges 214 , 216 , 218 , and 220 .
  • This configuration results in the occurrence of double layer borders 260 , 262 extending in the cross-machine direction along the first and second perimeter edges 214 , 216 with discontinuous fused borders 228 , 230 disposed inboard thereof as shown in FIG. 5.
  • Such a configuration is believed to further reduce the potential for the generation of particulates during use of the wiping cloth 210 .
  • the discontinuous fused borders 228 , 230 may be replaced by substantially continuous fusion zones such as strips extending inwardly from the double layer borders 260 , 262 .
  • the wipers of the present invention are formed from polymeric fibers incorporating very low levels of inorganic additives.
  • the fibers forming the wiper of the present invention are preferably formed of so-called “bright” or “clear” polyester.
  • Such fiber is substantially free of titanium dioxide (TiO 2 ) or other metal-based opasifying agent as is normally used to impart the traditional brilliant white character associated with polyester.
  • Titanium dioxide and other metallic ion compounds are prone to leeching into solution when placed in a highly acidic environment.
  • highly concentrated acid solutions such as sulfuric acid (H 2 SO 4 ) it has been recognized by the applicants that it may be desirable to reduce the presence of such ionic constituents within any particles which may be generated so as to avoid the accumulation and potential concentration of such ions within cleanroom acid solutions which may be used a number of times.
  • the fiber forming the wiper according to the present invention is preferably characterized by a concentration of inorganic ionic constituents at a level such that upon complete combustion of the fiber, the remaining ash content is in the range of less than about 0.30% of the initial fiber weight and is more preferably in the range of about zero to about 0.1% of the initial fiber weight and is most preferably in the range of about zero to about 0.3% of the initial fiber weight.
  • One such fiber which may be desirable in the formation of the wiper according to the present invention is believed to be available from E. I. DuPont de Nemours which is believed to have a place of business in Wilmington, Del.
  • the level of particulate generation associated with cleanroom wiper edges of various constructions has been determined by stretching a 6 centimeter segment of the wiper edge of interest to a length corresponding to the elongation occurring upon application of tension of 6 pounds force. This stretching takes place with the wiper edge held in the vertical position over a 14 cm funnel mounted on the end of an isokinetic probe linked to an airborne particle counter. The inverted wiper segment was stretched and held in tension for a period of 2 seconds and was removed while still taut. Resulting count of generated particles greater than or equal to about 0.3 microns was recorded upon stabilization of the counter.
  • Cleanroom wiper style “A” having edge constructions substantially as illustrated and described in relation to FIGS. 1 and 2 with double layer folded edges in the machine direction and discontinuous fused edges in the cross machine direction was formed from tightly constructed balanced knit fabric of double knit construction made up of 70 denier 36 filament polyester yarn with 41 wales per inch ⁇ 40 courses per inch and a weight of 3.7 ounces per square yard. Segments of both the double layer folded edges in the machine direction and the discontinuous edges in the cross-machine direction in thirty-one of the wipers were tested for particle generation under application of tension according to the testing procedure as described above. The results of such testing are set forth in Table 1.
  • a cleanroom wiper style “B” formed of fabric as described in Example 1 was formed having thermally sealed edges in both the machine direction and the cross-machine direction. Thermal sealing was carried out in accordance with the teachings of U.S. Pat. No. 5,069,735. Edge segments in the machine direction and in the cross-machine direction in thirty-one of the wipers were tested for particle generation under tension according to the testing procedure as described above. The results of such testing are set forth in Table 1.
  • a cleanroom wiper style “C” having inwardly extending fused edges as described in U.S Pat. No. 4,888,229 to Paley et al. in both the machine direction and the cross-machine direction was obtained from a commercial source.
  • the fabric forming the wiper was made up of 70 denier 34 filament polyester yarn in a double knit construction with 37 wales per inch ⁇ 47 courses per inch with a weight of 4.2 ounces per square yard. Edge segments in the machine direction and in the cross-machine direction in thirty-one of the wipers were tested for particle generation under application of tension according to the testing procedure as described above. The results of such testing are set forth in Table 1.
  • a cleanroom wiper style “D” was formed having thermally sealed edges in both the machine direction and in the cross-machine direction. Thermal sealing was carried out in accordance with the teachings of U.S. Pat. No. 5,069,735.
  • the fabric forming the wiper was a double knit construction of 70 denier 36 filament polyester yarns having 43 wales per inch ⁇ 37 courses per inch and a weight of 3.52 ounces per square yard. Edge segments in the machine direction and in the cross-machine direction in thirty-one of the wipers were tested for particle generation under application of tension according to the testing procedure as described above. The results of such testing are set forth in Table 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Knitting Of Fabric (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Woven Fabrics (AREA)
US09/976,412 2001-10-12 2001-10-12 Low contaminant wiper Abandoned US20030072915A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US09/976,412 US20030072915A1 (en) 2001-10-12 2001-10-12 Low contaminant wiper
PCT/US2002/028775 WO2003033799A1 (fr) 2001-10-12 2002-09-10 Chiffon a faible teneur en contaminants
JP2003536514A JP2005505706A (ja) 2001-10-12 2002-09-10 低汚染物質の拭い布
KR10-2004-7005363A KR20040054713A (ko) 2001-10-12 2002-09-10 와이퍼 및 클린룸 와이퍼
IL16107202A IL161072A0 (en) 2001-10-12 2002-09-10 Low contaminant wiper
EP20020801625 EP1434903A1 (fr) 2001-10-12 2002-09-10 Chiffon a faible teneur en contaminants
CNA028201566A CN1568384A (zh) 2001-10-12 2002-09-10 低污染擦具
MXPA04003028A MXPA04003028A (es) 2001-10-12 2002-09-10 Limpiador de contaminante bajo.
TW91122405A TWI244519B (en) 2001-10-12 2002-09-27 Low contaminant wiper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/976,412 US20030072915A1 (en) 2001-10-12 2001-10-12 Low contaminant wiper

Publications (1)

Publication Number Publication Date
US20030072915A1 true US20030072915A1 (en) 2003-04-17

Family

ID=25524073

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/976,412 Abandoned US20030072915A1 (en) 2001-10-12 2001-10-12 Low contaminant wiper

Country Status (9)

Country Link
US (1) US20030072915A1 (fr)
EP (1) EP1434903A1 (fr)
JP (1) JP2005505706A (fr)
KR (1) KR20040054713A (fr)
CN (1) CN1568384A (fr)
IL (1) IL161072A0 (fr)
MX (1) MXPA04003028A (fr)
TW (1) TWI244519B (fr)
WO (1) WO2003033799A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060217021A1 (en) * 2005-03-22 2006-09-28 Illinois Tool Woks Inc. Clean-room wipers
CN102337624A (zh) * 2010-07-21 2012-02-01 深圳市新纶科技股份有限公司 无尘室用高密度低发尘擦拭布及其制造方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017127342A1 (fr) * 2016-01-22 2017-07-27 3M Innovative Properties Company Tampon à récurer et procédé de récurage
KR102596894B1 (ko) * 2017-03-23 2023-10-31 폼텍 인터내셔널 컴퍼니, 리미티드 청정실 와이퍼 및 그 제조 방법
CN108977978B (zh) * 2018-09-17 2020-12-22 临沂市美添生活用品有限公司 一种去污面料及加工工艺

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4493868A (en) * 1982-12-14 1985-01-15 Kimberly-Clark Corporation High bulk bonding pattern and method
US4938817A (en) * 1988-12-30 1990-07-03 Kappler Safety Group Method of forming bonded seams of spunbonded polyolefin fabric and cleanroom garments including such seams
US6139954A (en) * 1997-08-28 2000-10-31 Eastman Chemical Company Polyesters containing neopentyl glycol and fibers formed therefrom

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4888229A (en) * 1988-04-08 1989-12-19 The Texwipe Company Wipers for cleanroom use
US5271995A (en) * 1990-02-23 1993-12-21 The Texwipe Company Particulate contamination control in cleanrooms
US5229181A (en) * 1990-10-30 1993-07-20 Amber Technologies Tubular knit cleanroom wiper
US6189189B1 (en) * 1997-11-21 2001-02-20 Milliken & Company Method of manufacturing low contaminant wiper
US6308538B1 (en) * 1999-07-22 2001-10-30 Berkshire Corporation Method and apparatus for manufacturing individual wipers having finished edges

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4493868A (en) * 1982-12-14 1985-01-15 Kimberly-Clark Corporation High bulk bonding pattern and method
US4938817A (en) * 1988-12-30 1990-07-03 Kappler Safety Group Method of forming bonded seams of spunbonded polyolefin fabric and cleanroom garments including such seams
US6139954A (en) * 1997-08-28 2000-10-31 Eastman Chemical Company Polyesters containing neopentyl glycol and fibers formed therefrom

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060217021A1 (en) * 2005-03-22 2006-09-28 Illinois Tool Woks Inc. Clean-room wipers
CN102337624A (zh) * 2010-07-21 2012-02-01 深圳市新纶科技股份有限公司 无尘室用高密度低发尘擦拭布及其制造方法

Also Published As

Publication number Publication date
EP1434903A1 (fr) 2004-07-07
MXPA04003028A (es) 2004-07-05
WO2003033799A1 (fr) 2003-04-24
CN1568384A (zh) 2005-01-19
IL161072A0 (en) 2004-08-31
TWI244519B (en) 2005-12-01
KR20040054713A (ko) 2004-06-25
JP2005505706A (ja) 2005-02-24

Similar Documents

Publication Publication Date Title
ES2369687T3 (es) Material textil no tejido multicomponente con aberturas.
US8410007B2 (en) Hydroengorged spunmelt nonwovens
CA2155315C (fr) Articles lies par piqures et procede de fabrication connexe
FI74503B (fi) Torkvira med laog genomtraenglighet och foerfarande foer dess framstaellning.
JP5525179B2 (ja) 不織布およびその製造方法、並びに拭き取り材
US6872274B2 (en) Method of making nonwoven with non-symmetrical bonding configuration
US6537644B1 (en) Nonwoven with non-symmetrical bonding configuration
US20070298214A1 (en) Nonwoven fabric
KR100223388B1 (ko) 극세섬유부직포및이의제조방법
EP3187635A1 (fr) Tissu doux non-tisse
KR20180119555A (ko) 개선된 내마모성을 가지는 부직포 및 이의 제조 방법
US2880112A (en) Textile-like fabric and method
US20030072915A1 (en) Low contaminant wiper
US5525393A (en) Method for the manufacture of a plush-type cleaning cloth and cleaning cloth or cleaning glove thereby obtained
EP0763616A1 (fr) Paillasson ayant une stabilité dimensionnelle excellente et procédé pour sa production
KR0120931B1 (ko) 청정실에서 사용하기 위한 닦게
EP1467648B1 (fr) Paillasson lavable
KR960001403B1 (ko) 폴리올레핀계 신축성 부직포 및 그 제조 방법
TWI877547B (zh) 乾燥片、過濾器、不織布、以及製造不織布的方法
JPH0967748A (ja) 嵩高性不織布およびその製造方法
HK1072450A (en) Low contaminant wiper
JPH10273865A (ja) 長繊維不織布およびその製造方法とタフテッドカーペット用基布およびタフテッドカーペット
US20240368812A1 (en) Laser-bonded non-woven textile
JP7627098B2 (ja) 不織布およびその製造方法、ならびにワイパー
KR20080104702A (ko) 복합 멀티필라멘트

Legal Events

Date Code Title Description
AS Assignment

Owner name: MILLIKEN & COMPANY, SOUTH CAROLINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KELLY, CREIGHTON C.;HILDRETH, DAVID D.;REEL/FRAME:012664/0513

Effective date: 20011129

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION