US20040198117A1 - Electrostatic dissipating garments and fabrics for use in making same - Google Patents
Electrostatic dissipating garments and fabrics for use in making same Download PDFInfo
- Publication number
- US20040198117A1 US20040198117A1 US10/827,162 US82716204A US2004198117A1 US 20040198117 A1 US20040198117 A1 US 20040198117A1 US 82716204 A US82716204 A US 82716204A US 2004198117 A1 US2004198117 A1 US 2004198117A1
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- United States
- Prior art keywords
- spun yarns
- static electricity
- yarns
- electrically conductive
- staple fibers
- 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
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Classifications
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- 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
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/26—Electrically protective, e.g. preventing static electricity or electric shock
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/441—Yarns or threads with antistatic, conductive or radiation-shielding properties
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- 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
- D03D15/50—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 properties of the yarns or threads
- D03D15/533—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 properties of the yarns or threads antistatic; electrically conductive
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- 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
- D10B2401/16—Physical properties antistatic; conductive
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- 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]
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- 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]
- Y10T442/3008—Woven fabric has an elastic quality
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- 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]
- Y10T442/3033—Including a strip or ribbon
- Y10T442/3041—Woven fabric comprises strips or ribbons only
-
- 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]
- Y10T442/3065—Including strand which is of specific structural definition
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- 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]
- Y10T442/3065—Including strand which is of specific structural definition
- Y10T442/3073—Strand material is core-spun [not sheath-core bicomponent strand]
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- 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]
- Y10T442/3146—Strand material is composed of two or more polymeric materials in physically distinct relationship [e.g., sheath-core, side-by-side, islands-in-sea, fibrils-in-matrix, etc.] or composed of physical blend of chemically different polymeric materials or a physical blend of a polymeric material and a filler material
- Y10T442/3171—Strand material is a blend of polymeric material and a filler material
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- 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]
- Y10T442/3179—Woven fabric is characterized by a particular or differential weave other than fabric in which the strand denier or warp/weft pick count is specified
- Y10T442/322—Warp differs from weft
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- 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]
- Y10T442/3179—Woven fabric is characterized by a particular or differential weave other than fabric in which the strand denier or warp/weft pick count is specified
- Y10T442/322—Warp differs from weft
- Y10T442/3228—Materials differ
- Y10T442/3236—Including inorganic strand material
- Y10T442/3244—Including natural strand material [e.g., cotton, wool, etc.]
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- 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]
- Y10T442/3179—Woven fabric is characterized by a particular or differential weave other than fabric in which the strand denier or warp/weft pick count is specified
- Y10T442/322—Warp differs from weft
- Y10T442/3228—Materials differ
- Y10T442/3236—Including inorganic strand material
- Y10T442/3252—Including synthetic polymeric strand material
Definitions
- the present invention relates generally to electrostatic dissipating fabrics and more particularly to electrostatic dissipating fabrics incorporating spun yarns which include conductive staple fiber constituents incorporated within the spun yarns.
- Garments such a lab coats and the like which may be worn during the assembly of electronic components are normally formed by the seamed attachment of fabric panels. If the electrical resistance between segments of the garment is too high, the possibility may exist for segments of the garment to become conductively isolated. If these conductively isolated segments of the garment cannot dissipate the built up static electricity and/or are not directly connected to a grounding source, potentially undesirable and uncontrolled rapid discharge of static electricity may occur on a periodic basis. As indicated above, the magnitude of such a discharge need not be substantial in order to be potentially damaging to sophisticated electronic circuitry.
- the present invention provides advantages and alternatives over the prior art by providing electrostatic dissipating fabrics incorporating spun yarns which include conductive staple fiber constituents incorporated within the spun yarns in conjunction with a grid of conductive filament yarns.
- the fabrics may be of either a woven or knit construction and are particularly adapted for use in garments worn during the construction of electronic components where arcing from accumulated static electricity is to be avoided.
- the conductive fiber constituents are dispersed at an effective concentration to establish a network of charge carrying junctions within and between the individual yarns.
- the large number of junctions between the yarns facilitates the dissipation of static electricity between regions of a garment formed by the yarns.
- the fabric retains a high degree of conductivity across seams within the garment even after multiple washings.
- FIG. 1 is a schematic illustration of a lab coat as may be worn in an electronics manufacturing environment
- FIG. 2 is an exemplary woven fabric construction incorporating a grid arrangement of conductive filament yarns in combination with spun yarns;
- FIG. 3 illustrates a section of spun yarn incorporating filamentary staple elements of electrically conductive character
- FIG. 4 is a plan view of the interface between two panels of woven fabric formed using the yarn of FIG. 3;
- FIG. 1 a jacket or lab coat 10 as may be utilized in an electronics manufacturing environment is illustrated.
- the lab coat 10 includes a main body portion 12 adapted to cover the torso of a user and two sleeve portions 14 extending away from the body portion 12 to provide coverage across the arms of a user.
- the sleeves 14 are adjoined to the body portion 12 along seams 16 such as sewn seams or the like.
- additional seams may be disposed in adjoining relation between the front of the lab coat 10 and the rear of the lab coat 10 in a manner as will be well know to those of skill in the art.
- the individual portions thereof are preferably formed from panels of woven or knitted fabric which are sewn into a desired configuration.
- discrete panels of fabric are joined together in slightly overlapping relation to one another.
- this adjoined relation is established and maintained by passing a stitching yarn 18 repetitively across the interface between the two panels of fabric at the interface of such panels of fabric.
- the construction of the panels of fabric forming the segments of the garment 10 is preferably such that a controlled degree of electrical conductivity is established and maintained throughout the garment 10 .
- One exemplary prior art fabric construction for use in the formation of the garment 10 is illustrated schematically in FIG. 2. As shown, in this prior art construction, a multiplicity of conductive filaments of material such as graphite or the like are interwoven in a substantially disperse grid-like arrangement with a multiplicity of multi-filament spun yarns 22 . As will be appreciated, in the illustrated prior art construction, the conductive circuit through the fabric is established by the junctions formed at the crossing points 24 between the conductive filament yarns 20 .
- crossing points 24 are dispersed relatively infrequently throughout the fabric construction.
- the electrical connection between the two seamed panels is dependent upon the bridging contact between the conductive filament yarns 20 in each of the panels. Since such conductive filament yarns 20 are dispersed sparingly through the overall fabric, a disconnection of even a small number of the junctions established across the seam such as during washing or use will negatively impact the ability to efficiently conduct electricity across a seam structure. While this deficiency may be addressed by increasing the number of conductive filament yarns 20 , such an increase may reduce the comfort of the fabric while substantially increasing manufacturing costs.
- the present invention utilizes a fabric formed from a conductive spun yarn 40 which is formed into a conductive fabric 50 .
- the fabric may be of either a woven construction (FIG. 4) or may be of a knit construction (FIG. 5 ).
- the conductive spun yarn 40 incorporates discrete conductive staple fibers 52 which are spun into the yarn in combination with staple fibers of substantially nonconductive polymeric or natural material such as (but not limited to) polyester, nylon, cotton, and mixtures thereof.
- staple fiber is meant any discrete length fiber which may be formed by known spinning techniques such as ring spinning, open end spinning or air jet spinning into a coordinated yarn structure.
- the conductive staple fibers 52 are preferably 20 dispersed throughout the conductive spun yarn 40 in a manner so as to render the conductive spun yarn 40 suitable for transmitting an electric charge therethrough and across seams formed between panels of the fabric.
- the electrical conductivity of the garment 10 when made from the fabric 70 illustrated in FIG. 6, may be measured by standardized electrostatic dissipation (ESD) tests such as the ESD Association's Test Method STM 2.1-1997. In such a test, leads are clipped between the sleeves 14 and a 10 volt charge is applied between the leads. The resistance between the leads is then measured. This test is carried out at a controlled relative humidity of 12%.
- the measured sleeve to sleeve resistance is preferably less than 10 12 Ohms and is more preferably in the range of 10 4 to about 10 12 Ohms. It is most preferably in the range of about 10 4 to about 10 8 Ohms. While such tests provide useful standards for evaluation of conductivity in an overall garment, the fabric making up such garments may also be the subject of evaluation independent of the garment so as to discount the effects of factors such as garment size, numbers of seams and the like.
- One recognized test method for measuring electrical resistivity in a fabric is set forth at MTCC Test Method 76-1987 (incorporated by reference).
- resistivity is reported in units of ohms per square based upon the following formula: Measured ⁇ ⁇ Resistance ⁇ ⁇ ( ohms ) ⁇ Width ⁇ ⁇ of ⁇ ⁇ Specimen Distance ⁇ ⁇ Between ⁇ ⁇ Electrodes
- fabrics according to the present invention When measured according to this test procedure at 20% relative humidity using a 2 inch ⁇ 2 inch specimen at a 100 volt potential and 1 inch electrode spacing, fabrics according to the present invention preferably have generally similar resistivity measurements in both the machine and cross-machine directions with such levels preferably being less than about 1,000,000,000 ohms per square and more preferably in the range of about 100,000 to 100,000,000 ohms per square. In some environments, resistivity levels substantially below about 100,000 ohms per square may be undesirable due to the garment becoming overly conductive.
- the utilization of the conductive spun yarn 40 in the conductive fabric 50 establishes a substantially conductive arrangement with electrical junctions being established both along the length of each of the conductive yarns 40 as well as at any point of contact between the conductive yarns 40 . That is, an electrical connection is established at every crossing point between the warp yarns and the fill yarns as well as at every contact point along a seam line 54 .
- the number of connections is virtually unlimited thereby providing an improved conduction path for static electricity through the conductive fabric 50 .
- FIG. 6 illustrates a particularly preferred fabric of the invention, shown at 70 .
- This fabric includes blended yarns 60 of the variety described previously at 40 , interspersed in the fabric with a grid of electrically conductive filaments 64 .
- a juncture formed by a seam 66 between two panels of fabric is shown, illustrating how the spun yarns define a network of electrically conductive junctions along the length of the spun yarns, between the spun yarns at locations where the spun yarns meet, and between the conductive filament yarns 64 .
- a woven fabric was formed with a plain weave construction using 11 ends per inch of an open end spun warp yarn of 26/1 construction and 1 end per inch of 2/70/30 polyester plied with 22/1 carbon suffused nylon filament at 87% polyester and 13% carbon suffused nylon and 7 picks per inch of a 16/1 open end spun yarn and 1 pick per inch of a 2/70/30 polyester plied with 22/1 carbon suffused nylon filament at 87% polyester and 13% carbon suffused nylon in the filling.
- Both the spun yarns in the warp and filling contained 63% polyester fiber, 35% cotton fiber, and 2% carbon fiber.
- the polyester fiber was KoSa T121 1.2 denier per filament fiber with a staple length of 1.5 inches.
- the cotton fiber had an estimated staple length of ⁇ fraction (31/32) ⁇ of inch.
- the carbon fiber was a carbon sufused acrylic having a 1.5 inch staple length and a filament linear density of 3 denier.
- One such acrylic material is believed to be available from Sterling Fibers having a place of business in Pace Fla., USA.
- the filament yarn was carbon suffused nylon of the variety available from Shakespeare in Columbia, S.C.
- the resultant yarns were thereafter woven on a standard rapier weaving machine in a construction of about 92 ends per inch by 48 picks per inch.
- a lab coat was thereafter constructed from panels of the resultant woven fabric with seams adjoined by traditional yarn stitching.
- conductive filament materials other than carbon suffused acrylic may likewise be utilized.
- low percentages of nylon as well as polyester and the like which have been rendered conductive may also be used.
- nylon fiber material is believed to be available from Shakespeare Fibers having a place of business in Columbia, S.C., USA.
- electrical conductivity in any of the materials as may be used in the conductive staple fibers may be imparted by carbonaceous materials as well as by the use of electrically conductive polymers or metallic additions.
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Abstract
Electrostatic dissipating fabrics incorporating spun yarns which include conductive staple fiber constituents incorporated within the spun yarns, and a grid of electrically conductive filament yarns. The fabrics may be of either a woven or knit construction. The conductive fiber constituents are dispersed at an effective concentration to establish a network of charge carrying junctions within and between the individual yarns and between the conductive filament yarns. The large number of junctions between the yarns facilitates the dissipation of static electricity between regions of a garment formed by the yarns. In particular, the fabric retains a high degree of conductivity across seams within the garment even after multiple washings.
Description
- The present invention relates generally to electrostatic dissipating fabrics and more particularly to electrostatic dissipating fabrics incorporating spun yarns which include conductive staple fiber constituents incorporated within the spun yarns.
- It is well known that when clothing fabric is used in environments such as a clean room or other areas where humidity is reduced or controlled, such fabrics may be susceptible to an accumulation of static electricity. This accumulation in static electricity may be particularly pronounced as humidity is reduced due to the fact that the static electricity cannot dissipate into the air. As will be well recognized, under extreme circumstances an accumulation in static electricity may give rise to a rapid electric discharge in the form of an arc when the fabric is brought into contact with a grounded structure.
- In recent years so-called “solid state” electronic circuitry using integrated circuits on semi-conductor materials such as silicon, and the like has moved towards ever finer circuit arrangements. While such technology and the resulting electronic components are extremely useful in carrying out a range of functions with very small space requirements, the decreased circuit geometries within those structures has made the electronic components highly susceptible to damage from external electric charges. In order to avoid the potential for damage which may result from the rapid discharge of static electricity, it is desirable to avoid the accumulation of static electricity within garments and other textile structures used within an electronics manufacturing environment.
- In order to facilitate the dissipation of static electricity away from a garment and into the atmosphere, it is desirable to distribute any electric charge substantially across the garment thereby providing the highest possible surface area for atmospheric dissipation. The substantial conduction of electric charge throughout the garment also permits the effective use of grounding wires in the form of bracelet-like structures attached to grounded cords which may be worn by the user of the garment.
- Garments such a lab coats and the like which may be worn during the assembly of electronic components are normally formed by the seamed attachment of fabric panels. If the electrical resistance between segments of the garment is too high, the possibility may exist for segments of the garment to become conductively isolated. If these conductively isolated segments of the garment cannot dissipate the built up static electricity and/or are not directly connected to a grounding source, potentially undesirable and uncontrolled rapid discharge of static electricity may occur on a periodic basis. As indicated above, the magnitude of such a discharge need not be substantial in order to be potentially damaging to sophisticated electronic circuitry.
- In order to address these issues, a number of fabric constructions and materials have been previously proposed. By way of example only, various arrangements are proposed in the following U.S. patents each of which is incorporated herein by reference in its entirety. In U.S. Pat. No. 2,845,962 an anti-static fabric is disclosed which is made from a fibrous material containing electrically conductive carbon black. U.S. Pat. No. 3,288,175 teaches the incorporation of a small quantity of metallic fibers within the textile fiber materials to produce an anti-static fabric. U.S. Pat. No. 3,586,597 discloses the use of a fiber which is coated with a resinous matrix of finely divided silver or carbon black. U.S. Pat. No. 4,255,487 discloses an electrically conductive textile fiber in which electrically conductive particles are suffused into a filamentary polymer substrate in an annular region located at the periphery of the filamentary polymer substrate. U.S. Pat. No. 4,869,951 discloses a static dissipating textile incorporating non-linear carbonaceous fibers or filaments. Currently, fabric dissipating fabric for use in clothing articles in electronic manufacturing environments generally uses an arrangement of substantially non-conductive yarns in combination with conductive filament yarns. By way of example only, and not limitation, various constructions incorporating such conductive filament yarns are described in U.S. Pat. Nos. 4,557,968 and 4,606,968.
- In the past, it has been found that garments such as lab coats and the like formed from prior electrostatic dissipating fabrics have been susceptible to an overall reduction in conductivity following multiple uses and washings. In particular, it has been found that the sleeve to sleeve conductivity measured between the cuff portions of sleeves on such garments may dramatically degrade due to the naturally occurring seam combing or separation which occurs between the panels of fabric forming the garment at the shoulder seams connecting the sleeves to the body of the garment. That is, after multiple washings the seams between the sleeves and the body portion of the garment may tend to undergo a very slight separation. Due to the relatively dispersed nature of the conductive filament yarns in the fabric forming the panels of material, this separation may give rise to a substantial reduction in conductivity across the seam. Thus, electrostatic charges may be prevented from efficiently traveling across the seam junction between the sleeves and the body portion of the garment. This reduction in conductivity may give rise to the potentially undesirable buildup of static electricity within portions of the garment.
- The present invention provides advantages and alternatives over the prior art by providing electrostatic dissipating fabrics incorporating spun yarns which include conductive staple fiber constituents incorporated within the spun yarns in conjunction with a grid of conductive filament yarns. The fabrics may be of either a woven or knit construction and are particularly adapted for use in garments worn during the construction of electronic components where arcing from accumulated static electricity is to be avoided. The conductive fiber constituents are dispersed at an effective concentration to establish a network of charge carrying junctions within and between the individual yarns. The large number of junctions between the yarns facilitates the dissipation of static electricity between regions of a garment formed by the yarns. In particular, the fabric retains a high degree of conductivity across seams within the garment even after multiple washings.
- The present invention will now be described by way of example only, with reference to the accompanying drawings which constitute a part of the specification herein and in which:
- FIG. 1 is a schematic illustration of a lab coat as may be worn in an electronics manufacturing environment;
- FIG. 2 is an exemplary woven fabric construction incorporating a grid arrangement of conductive filament yarns in combination with spun yarns;
- FIG. 3 illustrates a section of spun yarn incorporating filamentary staple elements of electrically conductive character;
- FIG. 4 is a plan view of the interface between two panels of woven fabric formed using the yarn of FIG. 3;
- FIG. 5 is a plan view of an exemplary knit fabric construction as may be formed using the yarn of FIG. 3; and
- FIG. 6 is a plan view of the interface of two panels of woven fabric according to the invention showing the blended yarn in combination with a grid of conductive filament yarns.
- While the invention has been illustrated and generally described above and will hereinafter be described in connection with certain potentially preferred embodiments, procedures and practices, it is to be understood that in no event is the invention to be limited to such illustrated and described embodiments, procedures and practices. On the contrary, it is intended that the present invention shall extend to all alternatives and modifications as may embrace the principles of this invention within the true spirit and scope thereof.
- Reference will now be made to the drawings wherein, to the extent possible, like elements are designated by like reference numerals throughout the various views. Turning to the drawings, in FIG. 1, a jacket or
lab coat 10 as may be utilized in an electronics manufacturing environment is illustrated. As shown, thelab coat 10 includes amain body portion 12 adapted to cover the torso of a user and twosleeve portions 14 extending away from thebody portion 12 to provide coverage across the arms of a user. As illustrated, thesleeves 14 are adjoined to thebody portion 12 alongseams 16 such as sewn seams or the like. As will be appreciated, additional seams may be disposed in adjoining relation between the front of thelab coat 10 and the rear of thelab coat 10 in a manner as will be well know to those of skill in the art. - Regardless of the actual construction of the
lab coat 10, the individual portions thereof are preferably formed from panels of woven or knitted fabric which are sewn into a desired configuration. Thus, at theseams 16 as well as at other seams within thegarment 10 discrete panels of fabric are joined together in slightly overlapping relation to one another. In a sewn seam construction, this adjoined relation is established and maintained by passing astitching yarn 18 repetitively across the interface between the two panels of fabric at the interface of such panels of fabric. - In accordance with the present invention, the construction of the panels of fabric forming the segments of the
garment 10 is preferably such that a controlled degree of electrical conductivity is established and maintained throughout thegarment 10. One exemplary prior art fabric construction for use in the formation of thegarment 10 is illustrated schematically in FIG. 2. As shown, in this prior art construction, a multiplicity of conductive filaments of material such as graphite or the like are interwoven in a substantially disperse grid-like arrangement with a multiplicity ofmulti-filament spun yarns 22. As will be appreciated, in the illustrated prior art construction, the conductive circuit through the fabric is established by the junctions formed at thecrossing points 24 between theconductive filament yarns 20. As shown, such crossing points 24 are dispersed relatively infrequently throughout the fabric construction. Moreover, in the event that two panels of such material are seamed together, the electrical connection between the two seamed panels is dependent upon the bridging contact between theconductive filament yarns 20 in each of the panels. Since suchconductive filament yarns 20 are dispersed sparingly through the overall fabric, a disconnection of even a small number of the junctions established across the seam such as during washing or use will negatively impact the ability to efficiently conduct electricity across a seam structure. While this deficiency may be addressed by increasing the number ofconductive filament yarns 20, such an increase may reduce the comfort of the fabric while substantially increasing manufacturing costs. - In order to promote the efficient distribution of electric charges throughout the
garment 10, the present invention utilizes a fabric formed from a conductive spunyarn 40 which is formed into aconductive fabric 50. The fabric may be of either a woven construction (FIG. 4) or may be of a knit construction (FIG. 5 ). - As illustrated, the conductive spun
yarn 40 incorporates discrete conductivestaple fibers 52 which are spun into the yarn in combination with staple fibers of substantially nonconductive polymeric or natural material such as (but not limited to) polyester, nylon, cotton, and mixtures thereof. As will be appreciated by those of skill in the art, by the term “staple fiber” is meant any discrete length fiber which may be formed by known spinning techniques such as ring spinning, open end spinning or air jet spinning into a coordinated yarn structure. By way of example only, and not limitation, it is contemplated that theconductive staple fibers 52 are preferably formed from a substantially electrically conductive carbonaceous material such as graphite or graphite suffused fibers of substantially linear geometry having staple lengths in the range of about 1 mm to about 150 mm. However, it is contemplated that other staple fibers of electrically conductive character may likewise be utilized including relatively short lengths of natural or synthetic fibers rendered conductive by the deposition of a conductive polymeric material such as polypyrole, polyaniline, or other conductive polymers as described in U.S. Pat. No. 4,803,096 to Kuhn et al. the teachings of which are incorporated by reference. It is also contemplated that theconductive staple fibers 52 may be formed from natural or synthetic fibers rendered conductive by deposition of a metallic material such as silver or copper sulfide. - Regardless of the actual construction and composition of the
conductive staple fibers 52, suchconductive staple fibers 52 are preferably 20 dispersed throughout the conductive spunyarn 40 in a manner so as to render the conductive spunyarn 40 suitable for transmitting an electric charge therethrough and across seams formed between panels of the fabric. In this regard, the electrical conductivity of thegarment 10, when made from thefabric 70 illustrated in FIG. 6, may be measured by standardized electrostatic dissipation (ESD) tests such as the ESD Association's Test Method STM 2.1-1997. In such a test, leads are clipped between thesleeves 14 and a 10 volt charge is applied between the leads. The resistance between the leads is then measured. This test is carried out at a controlled relative humidity of 12%. In such a test, the measured sleeve to sleeve resistance is preferably less than 1012 Ohms and is more preferably in the range of 104 to about 1012 Ohms. It is most preferably in the range of about 104 to about 108 Ohms. While such tests provide useful standards for evaluation of conductivity in an overall garment, the fabric making up such garments may also be the subject of evaluation independent of the garment so as to discount the effects of factors such as garment size, numbers of seams and the like. One recognized test method for measuring electrical resistivity in a fabric is set forth at MTCC Test Method 76-1987 (incorporated by reference). According to this method, resistivity is reported in units of ohms per square based upon the following formula: - When measured according to this test procedure at 20% relative humidity using a 2 inch×2 inch specimen at a 100 volt potential and 1 inch electrode spacing, fabrics according to the present invention preferably have generally similar resistivity measurements in both the machine and cross-machine directions with such levels preferably being less than about 1,000,000,000 ohms per square and more preferably in the range of about 100,000 to 100,000,000 ohms per square. In some environments, resistivity levels substantially below about 100,000 ohms per square may be undesirable due to the garment becoming overly conductive.
- In order to achieve the desired electrical resistance levels, it is contemplated that the conductive fiber content in the spun
yarn 40 is preferably in the range of about 1% to about 5% by weight and will more preferably be in the range of about 1% to about 3% by weight with the remainder of the conductive spunyarn 40 being made up of substantially non-conductive polymeric or natural fibers. By way of example, and not limitation, one contemplated composition for theconductive yarn 40 is 63% polyester fiber, 35% cotton fiber, and 2% carbon suffused acrylic staple fibers. In one exemplary construction, such a yarn may be spun into a 26/1 yarn for use in the warp direction of theconductive fabric 50 and into a 16/1 construction for use in the filling direction of theconductive fabric 50. - As illustrated in FIG. 4, the utilization of the conductive spun
yarn 40 in theconductive fabric 50 establishes a substantially conductive arrangement with electrical junctions being established both along the length of each of theconductive yarns 40 as well as at any point of contact between theconductive yarns 40. That is, an electrical connection is established at every crossing point between the warp yarns and the fill yarns as well as at every contact point along aseam line 54. Thus, unlike the prior art construction illustrated in FIG. 2, wherein electrical junctions are established only sporadically throughout the fabric structure, in the contemplatedconductive fabric 50, the number of connections is virtually unlimited thereby providing an improved conduction path for static electricity through theconductive fabric 50. Of course, it is to be understood that while the woven version of theconductive fabric 50 is illustrated as being in a so-called “plain weave” construction, other weave constructions as well as knit constructions (FIG. 5) and the like as will be well know to those of skill in the art may be likewise be utilized if desired. - FIG. 6 illustrates a particularly preferred fabric of the invention, shown at70. This fabric includes blended
yarns 60 of the variety described previously at 40, interspersed in the fabric with a grid of electricallyconductive filaments 64. A juncture formed by aseam 66 between two panels of fabric is shown, illustrating how the spun yarns define a network of electrically conductive junctions along the length of the spun yarns, between the spun yarns at locations where the spun yarns meet, and between theconductive filament yarns 64. - The invention may be further understood by reference to the following non-limiting example.
- A woven fabric was formed with a plain weave construction using 11 ends per inch of an open end spun warp yarn of 26/1 construction and 1 end per inch of 2/70/30 polyester plied with 22/1 carbon suffused nylon filament at 87% polyester and 13% carbon suffused nylon and 7 picks per inch of a 16/1 open end spun yarn and 1 pick per inch of a 2/70/30 polyester plied with 22/1 carbon suffused nylon filament at 87% polyester and 13% carbon suffused nylon in the filling. Both the spun yarns in the warp and filling contained 63% polyester fiber, 35% cotton fiber, and 2% carbon fiber. The polyester fiber was KoSa T121 1.2 denier per filament fiber with a staple length of 1.5 inches. The cotton fiber had an estimated staple length of {fraction (31/32)} of inch. The carbon fiber was a carbon sufused acrylic having a 1.5 inch staple length and a filament linear density of 3 denier. One such acrylic material is believed to be available from Sterling Fibers having a place of business in Pace Fla., USA. The filament yarn was carbon suffused nylon of the variety available from Shakespeare in Columbia, S.C. The resultant yarns were thereafter woven on a standard rapier weaving machine in a construction of about 92 ends per inch by 48 picks per inch. A lab coat was thereafter constructed from panels of the resultant woven fabric with seams adjoined by traditional yarn stitching. The resulting garment was thereafter subjected to ESD Association Test Method STM 2.1-1997 at 10 volts and 12% relative humidity. The measured electrical resistance after a controlled number of washings is set forth at Table 1.
TABLE 1 No. of Washings Sleeve to Sleeve Resistance (Ohms) 0 8.3 × 10**5 10 3.65 × 10**5 25 4.9 × 10**5 50 7.5 × 10**5 75 1.05 × 10**6 100 1.57 × 10**6 - Of course, it is contemplated that conductive filament materials other than carbon suffused acrylic may likewise be utilized. In particular, it is contemplated that low percentages of nylon as well as polyester and the like which have been rendered conductive may also be used. By way of example only, one such nylon fiber material is believed to be available from Shakespeare Fibers having a place of business in Columbia, S.C., USA. As previously indicated, electrical conductivity in any of the materials as may be used in the conductive staple fibers may be imparted by carbonaceous materials as well as by the use of electrically conductive polymers or metallic additions.
- While the present invention has been illustrated and described in relation to certain potentially preferred embodiments, procedures, and practices, it is fully contemplated that modifications and variations to the present invention will no doubt occur to those of skill in the art upon reading the preceding description and/or through practice of the invention. It is therefore intended that the invention shall extend to all such modifications and variations which incorporate the board principles of the present invention within the full spirit and scope thereof.
Claims (27)
1. A static electricity dissipating fabric comprising a plurality of spun yarns held together in crossing relation to one another in a coordinated woven or knit construction, wherein said spun yarns comprise a plurality of electrically conductive staple fibers in spun relation with a plurality of substantially nonconductive natural or synthetic staple fibers and wherein said plurality of electrically conductive staple fibers are dispersed throughout said spun yarns such that said plurality of electrically conductive staple fibers define a network of electrically conductive junctions along the length of said spun yarns and between said spun yarns at locations where said spun yarns meet, and a grid of conductive filament yarns, wherein said spun yarns form electrically conductive junctions between conductive filament yarns.
2. A static electricity dissipating fabric as recited in claim 1 , wherein said spun yarns are ring spun yarns.
3. A static electricity dissipating fabric as recited in claim 1 , wherein said spun yarns are open end spun yarns.
4. A static electricity dissipating fabric as recited in claim 1 , wherein said spun yarns are air jet spun yarns.
5. A static electricity dissipating fabric as recited in claim 1 , wherein said substantially nonconductive natural or synthetic staple fibers are selected from the group consisting of polyester staple fiber fibers, cotton staple fibers and blends thereof.
6. A static electricity dissipating fabric as recited in claim 1 , wherein said plurality of spun yarns comprise about 65% to about 99% by weight polyester staple fibers and about 0% to about 34% by weight cotton fibers and about 1% to about 5% by weight of electrically conductive carbonaceous staple fibers of substantially linear geometry, and the filament yarn comprised about 50% to about 90% polyester and about 50 to about 10% carbon suffused nylon filament.
7. A static electricity dissipating fabric as recited in claim 6 , wherein said static electricity dissipating fabric is of a woven construction and wherein said static electricity dissipating fabric is characterized by an electrical resistance in the range of about to about 100,000 to about 100,000,000 ohms per square when measured according to MTCC Test Method 76-1987 using a 100 volt potential and 1 inch electrode spacing at 20% relative humidity.
8. A static electricity dissipating fabric comprising a plurality of spun yarns held together in crossing woven relation to one another, wherein said spun yarns comprise a plurality of electrically conductive carbonaceous staple fibers of substantially linear geometry in spun relation with a plurality of substantially nonconductive natural or synthetic staple fibers and wherein said plurality of electrically conductive carbonaceous staple fibers are dispersed throughout said spun yarns such that said plurality of electrically conductive carbonaceous staple fibers define a network of electrically conductive junctions along the length of said spun yarns and between said spun yarns at locations where portions of said spun yarns meet within the fabric, and a grid of conductive filament yarns, wherein said spun yarns form electrically conductive junctions between conductive filament yarns.
9. A static electricity dissipating fabric as recited in claim 8 , wherein said spun yarns are ring spun yarns.
10. A static electricity dissipating fabric as recited in claim 8 , wherein said spun yarns are open end spun yarns.
11. A static electricity dissipating fabric as recited in claim 8 , wherein said spun yarns are air jet spun yarns.
12. A static electricity dissipating fabric as recited in claim 8 , wherein said substantially nonconductive natural or synthetic staple fibers are selected from the group consisting of polyester staple fiber fibers, cotton staple fibers and blends thereof.
13. A static electricity dissipating fabric as recited in claim 8 , wherein said plurality of spun yarns comprise about 65% to about 99% by weight polyester staple fibers and about 0% to about 34% by weight cotton fibers and about 1% to about 5% by weight of electrically conductive carbonaceous staple fibers of substantially linear geometry.
14. A static electricity dissipating fabric as recited in claim 13 , wherein said static electricity dissipating fabric is characterized by an electrical resistance in the range of about to about 100,000 to about 100,000,000 ohms per square when measured according to MTCC Test Method 76-1987 using a 100 volt potential and 1 inch electrode spacing at 20% relative humidity.
15. A static electricity dissipating fabric as recited in claim 13 , wherein the electrically conductive carbonaceous staple fibers are carbon suffused acrylic fibers.
16. A static electricity dissipating fabric as recited in claim 15 , wherein the carbon suffused acrylic fibers are characterized by a staple length of about 0.5 to about 3.5 inches.
17. A static electricity dissipating fabric of woven construction having a warp direction and a fill direction, said static electricity dissipating fabric comprising a plurality of spun yarns disposed in both the warp direction and the fill direction and wherein said spun yarns comprise a plurality of electrically conductive carbonaceous staple fibers of substantially linear geometry in spun relation with a plurality of substantially nonconductive natural or synthetic staple fibers and wherein said plurality of electrically conductive carbonaceous staple fibers are dispersed throughout said spun yarns such that said plurality of electrically conductive carbonaceous staple fibers define a network of electrically conductive junctions along the length of said spun yarns and between said spun yarns at locations where portions of said spun yarns meet within the fabric, and a grid of conductive filament yarns, wherein said spun yarns form electrically conductive junctions between conductive filament yarns, wherein said plurality of spun yarns comprise about 65% to about 99% by weight polyester staple fibers and about 0% to about 34% by weight cotton fibers and about 1% to about 5% by weight of electrically conductive carbonaceous staple fibers of substantially linear geometry.
18. A static electricity dissipating fabric as recited in claim 17 , wherein said static electricity dissipating fabric is characterized by an electrical resistance in the range of about to about 100,000 to about 100,000,000 ohms per square when measured according to MTCC Test Method 76-1987 using a 100 volt potential and 1 inch electrode spacing at 20% relative humidity.
19. A static electricity dissipating fabric as recited in claim 17 , wherein said spun yarns are ring spun yarns.
20. A static electricity dissipating fabric as recited in claim 17 , wherein said spun yarns are open end spun yarns.
21. A static electricity dissipating fabric as recited in claim 17 , wherein said spun yarns are air jet spun yarns.
22. A garment formed from seamed panels of the static electricity dissipating fabric as recited in claim 17 .
23. A garment as recited in claim 22 , wherein said garment is a lab coat and wherein said lab coat is characterized by a sleeve to sleeve electrical resistance of less than about 100,000,000 ohms after 100 washings when measured according to ESD Association Test Method STM 2.1-1997 at 10 volts and 12% relative humidity.
24. A garment as recited in claim 22 , wherein said garment is a lab coat and wherein said lab coat is characterized by a sleeve to sleeve electrical resistance in the range of less than about 10,000,000 ohms after 100 washings when measured according to ESD Association Test Method STM 2.1-1997 at 10 volts and 12% relative humidity.
25. A garment as recited in claim 22 , wherein said garment is a lab coat and wherein said lab coat is characterized by a sleeve to sleeve electrical resistance of less than about 5,000,000 ohms after 100 washings when measured according to ESD Association Test Method STM 2.1-1997 at 10 volts and 12% relative humidity.
26. A garment comprising first and second panels seamed together, wherein each of said first and second panels comprises a static electricity dissipating fabric comprising a plurality of spun yarns comprising a plurality of electrically conductive staple fibers in spun relation with a plurality of substantially nonconductive natural or synthetic staple fibers, and a grid of electrically conductive filament yarns, wherein said plurality of electrically conductive staple fibers are dispersed throughout said spun yarns such that said plurality of electrically conductive staple fibers define a network of electrically conductive junctions along the length of the spun yarns and between the spun yarns at locations where said spun yarns meet, and between conductive filament yarns.
27. The garment as recited in claim 26 , wherein said garment is a lab coat and wherein said lab coat is characterized by a sleeve to sleeve electrical resistance of less than about 100,000,000 ohms after 100 washings when measured according to ESD Association Test Method STM 2.1-1997 at 10 volts and 12% relative humidity.
Priority Applications (1)
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US10/827,162 US20040198117A1 (en) | 2002-11-25 | 2004-04-19 | Electrostatic dissipating garments and fabrics for use in making same |
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US10/827,162 US20040198117A1 (en) | 2002-11-25 | 2004-04-19 | Electrostatic dissipating garments and fabrics for use in making same |
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US7671599B1 (en) | 2007-01-31 | 2010-03-02 | Western Digital Technologies, Inc. | Static electricity monitor comprising a walking footpad electrode and handrail electrode |
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RU2723334C1 (en) * | 2019-11-13 | 2020-06-09 | Салих Шукурович Ташпулатов | Antistatic fabric |
Citations (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9832A (en) * | 1853-07-05 | Teuss | ||
US37406A (en) * | 1863-01-13 | Improvement in safety nipple-guards for fire-arms | ||
US2845962A (en) * | 1953-07-14 | 1958-08-05 | Dunlop Rubber Co | Antistatic fabrics |
US3288175A (en) * | 1964-10-22 | 1966-11-29 | Stevens & Co Inc J P | Textile material |
US3586597A (en) * | 1967-11-20 | 1971-06-22 | Teijin Ltd | Cloth having durable antistatic properties for use in garments and underwear |
US3839245A (en) * | 1972-03-30 | 1974-10-01 | Emery Industries Inc | Poly(ether-ester-amide) antistatic compositions derived from dimr acids |
US3900676A (en) * | 1967-09-19 | 1975-08-19 | Du Pont | Antistatic filaments |
US4148960A (en) * | 1977-12-27 | 1979-04-10 | Monsanto Company | Polyester having improved antistatic properties |
US4255487A (en) * | 1977-05-10 | 1981-03-10 | Badische Corporation | Electrically conductive textile fiber |
US4420529A (en) * | 1980-08-22 | 1983-12-13 | Scapa Dryers, Inc. | Anti-static dryer fabrics |
US4422483A (en) * | 1981-06-03 | 1983-12-27 | Angelica Corporation | Antistatic fabric and garment made therefrom |
US4443515A (en) * | 1982-02-05 | 1984-04-17 | Peter Rosenwald | Antistatic fabrics incorporating specialty textile fibers having high moisture regain and articles produced therefrom |
US4484926A (en) * | 1982-02-05 | 1984-11-27 | Peter Risenwald | Antistatic fabrics incorporating specialty textile fibers having high moisture regain |
US4557968A (en) * | 1983-07-25 | 1985-12-10 | Stern & Stern Textiles, Inc. | Directional electrostatic dissipating fabric and method |
US4582747A (en) * | 1984-02-16 | 1986-04-15 | Teijin Limited | Dust-proof fabric |
US4606968A (en) * | 1983-07-25 | 1986-08-19 | Stern And Stern Textiles, Inc. | Electrostatic dissipating fabric |
US4771596A (en) * | 1970-04-20 | 1988-09-20 | Brunswick Corporation | Method of making fiber composite |
US4803096A (en) * | 1987-08-03 | 1989-02-07 | Milliken Research Corporation | Electrically conductive textile materials and method for making same |
US4856299A (en) * | 1986-12-12 | 1989-08-15 | Conductex, Inc. | Knitted fabric having improved electrical charge dissipation and absorption properties |
US4869951A (en) * | 1988-02-17 | 1989-09-26 | The Dow Chemical Company | Method and materials for manufacture of anti-static cloth |
US4950533A (en) * | 1987-10-28 | 1990-08-21 | The Dow Chemical Company | Flame retarding and fire blocking carbonaceous fiber structures and fabrics |
US4970109A (en) * | 1986-12-12 | 1990-11-13 | Conductex, Inc. | Knitted barrier fabric |
US5102727A (en) * | 1991-06-17 | 1992-04-07 | Milliken Research Corporation | Electrically conductive textile fabric having conductivity gradient |
US5277855A (en) * | 1992-10-05 | 1994-01-11 | Blackmon Lawrence E | Process for forming a yarn having at least one electrically conductive filament by simultaneously cospinning conductive and non-conductive filaments |
US5288544A (en) * | 1986-10-30 | 1994-02-22 | Intera Company, Ltd. | Non-linting, anti-static surgical fabric |
US5305593A (en) * | 1992-08-31 | 1994-04-26 | E. I. Du Pont De Nemours And Company | Process for making spun yarn |
US5786849A (en) * | 1997-02-07 | 1998-07-28 | Lynde; C. Macgill | Marine navigation I |
US6057032A (en) * | 1997-10-10 | 2000-05-02 | Green; James R. | Yarns suitable for durable light shade cotton/nylon clothing fabrics containing carbon doped antistatic fibers |
US6153124A (en) * | 2000-03-23 | 2000-11-28 | Hung; Chu-An | Electrically-conductive fabric |
US6291375B1 (en) * | 1998-10-29 | 2001-09-18 | Guilford Mills, Inc. | Textile fabric for dissipating electrical charges |
US6348116B1 (en) * | 1997-12-24 | 2002-02-19 | Samsung Electronics Co., Ltd. | Dustproof smock for use in a clean room, fabric for use in manufacturing the smock, and method of manufacturing the fabric |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5876849A (en) * | 1997-07-02 | 1999-03-02 | Itex, Inc. | Cotton/nylon fiber blends suitable for durable light shade fabrics containing carbon doped antistatic fibers |
-
2002
- 2002-11-25 US US10/303,195 patent/US20040102116A1/en not_active Abandoned
-
2003
- 2003-09-11 WO PCT/US2003/028706 patent/WO2004048659A1/en not_active Application Discontinuation
- 2003-09-11 AU AU2003302467A patent/AU2003302467A1/en not_active Abandoned
-
2004
- 2004-04-19 US US10/827,162 patent/US20040198117A1/en not_active Abandoned
Patent Citations (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US37406A (en) * | 1863-01-13 | Improvement in safety nipple-guards for fire-arms | ||
US9832A (en) * | 1853-07-05 | Teuss | ||
US2845962A (en) * | 1953-07-14 | 1958-08-05 | Dunlop Rubber Co | Antistatic fabrics |
US3288175A (en) * | 1964-10-22 | 1966-11-29 | Stevens & Co Inc J P | Textile material |
US3900676A (en) * | 1967-09-19 | 1975-08-19 | Du Pont | Antistatic filaments |
US3586597A (en) * | 1967-11-20 | 1971-06-22 | Teijin Ltd | Cloth having durable antistatic properties for use in garments and underwear |
US4771596A (en) * | 1970-04-20 | 1988-09-20 | Brunswick Corporation | Method of making fiber composite |
US3839245A (en) * | 1972-03-30 | 1974-10-01 | Emery Industries Inc | Poly(ether-ester-amide) antistatic compositions derived from dimr acids |
US4255487A (en) * | 1977-05-10 | 1981-03-10 | Badische Corporation | Electrically conductive textile fiber |
US4148960A (en) * | 1977-12-27 | 1979-04-10 | Monsanto Company | Polyester having improved antistatic properties |
US4420529A (en) * | 1980-08-22 | 1983-12-13 | Scapa Dryers, Inc. | Anti-static dryer fabrics |
US4422483A (en) * | 1981-06-03 | 1983-12-27 | Angelica Corporation | Antistatic fabric and garment made therefrom |
US4443515A (en) * | 1982-02-05 | 1984-04-17 | Peter Rosenwald | Antistatic fabrics incorporating specialty textile fibers having high moisture regain and articles produced therefrom |
US4484926A (en) * | 1982-02-05 | 1984-11-27 | Peter Risenwald | Antistatic fabrics incorporating specialty textile fibers having high moisture regain |
US4557968A (en) * | 1983-07-25 | 1985-12-10 | Stern & Stern Textiles, Inc. | Directional electrostatic dissipating fabric and method |
US4606968A (en) * | 1983-07-25 | 1986-08-19 | Stern And Stern Textiles, Inc. | Electrostatic dissipating fabric |
US4582747A (en) * | 1984-02-16 | 1986-04-15 | Teijin Limited | Dust-proof fabric |
US5288544A (en) * | 1986-10-30 | 1994-02-22 | Intera Company, Ltd. | Non-linting, anti-static surgical fabric |
US4856299A (en) * | 1986-12-12 | 1989-08-15 | Conductex, Inc. | Knitted fabric having improved electrical charge dissipation and absorption properties |
US4970109A (en) * | 1986-12-12 | 1990-11-13 | Conductex, Inc. | Knitted barrier fabric |
US4803096A (en) * | 1987-08-03 | 1989-02-07 | Milliken Research Corporation | Electrically conductive textile materials and method for making same |
US4950533A (en) * | 1987-10-28 | 1990-08-21 | The Dow Chemical Company | Flame retarding and fire blocking carbonaceous fiber structures and fabrics |
US4869951A (en) * | 1988-02-17 | 1989-09-26 | The Dow Chemical Company | Method and materials for manufacture of anti-static cloth |
US5102727A (en) * | 1991-06-17 | 1992-04-07 | Milliken Research Corporation | Electrically conductive textile fabric having conductivity gradient |
US5305593A (en) * | 1992-08-31 | 1994-04-26 | E. I. Du Pont De Nemours And Company | Process for making spun yarn |
US5277855A (en) * | 1992-10-05 | 1994-01-11 | Blackmon Lawrence E | Process for forming a yarn having at least one electrically conductive filament by simultaneously cospinning conductive and non-conductive filaments |
US5786849A (en) * | 1997-02-07 | 1998-07-28 | Lynde; C. Macgill | Marine navigation I |
US6057032A (en) * | 1997-10-10 | 2000-05-02 | Green; James R. | Yarns suitable for durable light shade cotton/nylon clothing fabrics containing carbon doped antistatic fibers |
US6348116B1 (en) * | 1997-12-24 | 2002-02-19 | Samsung Electronics Co., Ltd. | Dustproof smock for use in a clean room, fabric for use in manufacturing the smock, and method of manufacturing the fabric |
US6291375B1 (en) * | 1998-10-29 | 2001-09-18 | Guilford Mills, Inc. | Textile fabric for dissipating electrical charges |
US6153124A (en) * | 2000-03-23 | 2000-11-28 | Hung; Chu-An | Electrically-conductive fabric |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080224934A1 (en) * | 2005-07-06 | 2008-09-18 | Nederlandse Oraganisatie Voor Toegepastnatuurweten Schappelijk Onderzoek Tn | Tight-Fitting Garment Including a Sensor for Measuring Length and/or Shape |
US7817095B2 (en) * | 2005-07-06 | 2010-10-19 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Tight-fitting garment including a sensor for measuring length and/or shape |
US20070113326A1 (en) * | 2005-11-23 | 2007-05-24 | Aramark Cleanroom Services, Inc. | Goggle strap |
US7698752B2 (en) * | 2005-11-23 | 2010-04-20 | Aramark Cleanroom Services, Llc | Goggle strap |
US7900272B1 (en) | 2006-08-23 | 2011-03-08 | Western Digital Technologies, Inc. | Static control garment |
US7869183B1 (en) | 2006-08-23 | 2011-01-11 | Western Digital Technologies, Inc. | Static electricity monitoring device comprising a first footpad electrically insulated from a second footpad |
US7869182B1 (en) | 2006-08-23 | 2011-01-11 | Western Digital Technologies, Inc. | Monitoring device for use with an insulated dual portion garment |
US20080103021A1 (en) * | 2006-10-30 | 2008-05-01 | Forhouse Corporation | Guiding structure of a treadmill for guiding electrostatic charges of a human body |
US7671599B1 (en) | 2007-01-31 | 2010-03-02 | Western Digital Technologies, Inc. | Static electricity monitor comprising a walking footpad electrode and handrail electrode |
US20110277215A1 (en) * | 2010-05-11 | 2011-11-17 | King's Metal Fiber Technologies Co., Ltd. | Glove for operating a capacitive touch panel |
US20130152272A1 (en) * | 2011-12-14 | 2013-06-20 | Gregory R. Schultz | Protective Glove with Conductive Stitching |
CN103361871A (en) * | 2012-03-19 | 2013-10-23 | 厦门市康保无尘科技有限公司 | Production method of antistatic non-dust cloth |
CN103668693A (en) * | 2013-12-25 | 2014-03-26 | 苏州曼诚纺织有限公司 | Antistatic abrasion-resistant fabric |
Also Published As
Publication number | Publication date |
---|---|
US20040102116A1 (en) | 2004-05-27 |
WO2004048659A1 (en) | 2004-06-10 |
AU2003302467A1 (en) | 2004-06-18 |
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