TWI244519B - Low contaminant wiper - Google Patents

Abstract

A low particle generating wiper for use in a particle sensitive environment. The wiper is constructed at least partly of a textile fabric formed from a multiplicity of yarns including thermoplastic filaments. The wiper includes an interior surrounded by perimeter edges. The perimeter edges are constructed such that filaments within the yarns at the perimeter edge undergo a reduced occurrence of fracture under tension thereby potentially reducing particle generation during use.

Description

1244519 V. Description of the invention [Technical field to which the invention belongs] The present invention relates to the manufacture of fabric wiping cloths, especially wiping cloths that release less and / or less aggressive particulate pollutants but exhibit good absorption and strength . & [Prior art] Lu wipes can be made of knitted, woven or non-woven fabrics containing materials such as polyester and the like. A typical manufacturing method starts with drawing and textudng continuous filament yarns. The textured yarn is knitted or woven to form a fabric, and the fabric is washed or washed to remove the spinning oil. The fabric can be chemically modified to improve its wettability and performance. The fabric is then dried in a cloth rack oven to remove moisture and heat fix the fabric. Heat fixation dissipates stress on the polyester fibers and stabilizes the fabric. Then the fabric is cut into a cloth, which is basically a square of 9 inches by 9 inches. The wiping cloth can be left unwashed, or it can be cleaned in a clean room washing room, using a special interface agent and highly treated and purified water to reduce the pollution existing on the fabric. After cleaning, the wipe can be left in an air-tight plastic bag, or it can be pre-saturated with a suitable solvent before being packaged. These wiping cloths are used by name > — In 5 pm different applications, including dust-free to car paint room and other environments that do not want to contain particulate pollutants. The second application emphasizes that these forms of wiping cloths should be achieved. . : 夂. B For wipes used in clean rooms, performance standards must be met. These standards are about absorbance and the revised (corrected) replacement page. V. Description of the invention (2) Pollution, including the highest allowable particles, unspecified extractable substances and individual ionic pollutants. Standards for the release of particulate pollutants are specifically SYG = and different methods have been designed to meet these standards. For example, U.S. Patent No. 4,888,229 to Paley et al. (The contents of which are incorporated herein by reference) discloses a wiping cloth with a hemming edge. The sealing edges of these wiping cloths are present to reduce the risk of damage caused by small fibers. The pollution caused. The content of US Patent No. 5,229,181, et al., Is incorporated herein by reference) Disclosure-Knitted fabric tube, only the two edges of the tube must be cut and sealed, thus reducing the amount of loose fibers from the edges = Into / y *. Patent No. 5,271,995 of Paiey et al. (herein, incorporated herein by reference) discloses a wipe for use in a clean room environment, the cloth 'by using a special yarn' that is `` bright nylon ( η plus g) to reduce inorganic pollutants. Reynolds U.S. Patent No. 5 '_' 735 # b (the content of which is incorporated herein as a reference) discloses an operation procedure for cutting into pieces by using a material that ranges from as fine as 800 F. Of hot air jets to dazzle the fibers, forming-the product of an edge seal with reduced loose fiber contamination. The reduction in the release of particulate pollutants from the clean room wipes has achieved _ advantages, but the further reduction in particle release is still highly desirable. [Summary of the Invention] 1. According to one aspect of the present specification, a Sanyuki ir, wiper suitable for a wide range of applications is provided. The wiper generally meets the requirements for the supply of dust-free, clean and regulated products, especially those that have qualifications for Class ⑽ clean rooms and the following regulatory standards. 5. Description of the invention (3) According to another aspect of the present invention, a room wiper is provided. According to still another aspect of the present invention, a dust-free fluid with high fluid absorption is provided. A wiping cloth having a generally stable edge is provided. The edge of the transparent edge θ4 is not subjected to tensile stress during normal use. Who would it be? ^^ θ The particles in the shell were broken. According to still another aspect of the present invention, the utility of the wipes and yarns of yarns with inorganic ion content is effective. The incorporation has a substantial reduction to reduce any possible release. [Simplified illustration of the drawing] The present invention will now be described by way of example only, and with reference to the accompanying drawings A part of the description of this case, wherein: Fig. 1 is a front plan view of a specific example of a wiping cloth according to the present invention; Fig. 2 is a diagram taken along line 2-2 of Fig. 1; Fig. 3 is A front plan view of another specific example of a wiping cloth according to the present invention; FIG. 4 is a front plan view of another specific example of a wiping cloth according to the present invention; FIG. 5 is a drawing along line 5 of FIG. The figure taken. Although the present invention has been exemplified and will be described in more detail below with reference to certain possible better specific examples and implementations, it is important to understand that the general description above, as well as the detailed description below and the accompanying drawings The formula is for illustration purposes only, and the invention is not intended to be limited by them in either respect. On the contrary, it is intended that the present invention should be extended to all alternatives, modifications, and equivalents which can be included in the fifth aspect of the present invention, the description of the invention (4), the principle τ, and within the true spirit and scope of the present invention. Thing. [Embodiment] Referring now to the drawings, to the extent possible, similar reference numerals are given to various types of elements in various drawings. The contents of all U.S. patents mentioned herein are incorporated herein in their entirety as a reference. It may be a better example. The wiping cloth of the present invention can be made of several pieces of polyester fiber [preferably poly (for poly Phthalate) fibers] woven or knitted yarns. This yarn is preferably a continuous filament polyester yarn ', although other yarn forms and configurations can be used as well if desired. It is anticipated that yarns with characteristics of wide denier and filament count can also be used. Examples of yarns that may be used may include those having a denier to filament ratio of about 0.1 to about 10, combined with about 15 to about 20% of denier. A wide range of fabric weights can be used. Typically, the weight of the fabric used in cleanroom wipes is approximately per square yard! Weight to 9 ounces, preferably about 3 to 7 ounces per square yard. If desired, it is anticipated that the yarn used in the fabric may be a textured polyester yarn. Such yarns are commercially available, and they know the details of those skilled in the art. In short, the part-by-direction yarn (POY) is improved by wrinkling, applying random coils, or otherwise improving the volume or surface texture of the yarn to increase coverage, absorbency, elasticity, abrasion resistance, warmth Degree, insulation and / or improved aesthetics. One of the deformation processing methods 1244519 finr- revised (corrected) replacement page five, the description of the invention (the general description is recorded in the Encyclopedia of Textiles, Fibers, and Non-woven Fabrics) Encyclopedia Reprint series, Ed. Martin Grayson, pp. 381-398, John Wylie and Sons (1984), and Dictionary of Fiber and Textile Technology, Hoechst Celanese (1989). In deformation processing During the process, the yarn is preferably not heated to a temperature above 300 ° F, and is generally heated above about 225 ° F. According to a possibly preferred embodiment of the present invention, once the fabric is formed, Can be subjected to cleaning and heating fixation procedures, as described in US Patent No. 6,189,189 to Morin et al., The contents of which are incorporated herein by reference. In particular, fabrics are preferably dried And is heated and fixed at a temperature of about 180 ° F to 300 ° F (more preferably 200 ° F to 275 ° F, and most preferably 225 ° F to 265 ° F). The heat fixing temperature is preferably set A temperature higher than that previously experienced by the yarn. This heat fixation process is believed to improve the performance criteria of the wipes applied to the clean room environment, including absorbency and the number of particles produced And size. Generally speaking, it is desirable that clean room wipes can produce a high degree of absorption and a low degree of particulate contamination during use. Furthermore, what is desired are those particles that may be generated Contaminants have a low degree of inorganic ion components, such as metallic components that can affect the performance of small-scale body circuits. It has been recognized that the edges of the wipes can cause disproportionately high levels when used in a wipe Degree of particle generation. Theoretically this is not 1244519

V. Description of the invention (6) The proportion of particles is caused by the destruction of the fiber elements along the surface of the moon & To reduce this problem, a method has been proposed in which the wiper edges are fused along the edge of the wiper or within a substantially solid fusion zone extending a distance from the edge of the wiper toward the inside of the wiper. This fusion zone can be formed by using energy delivered from a directional heat application source to melt the fibers located in such zones. However, fused edges or extended piping may tend to reduce the elasticity of those areas compared to other areas of the wipe. Therefore, when one of the wiping cloths is stretched, the fusion edge or the extended piping may cause premature positioning fracture, thereby releasing undesired particulate matter. According to a first specific example of the present invention, as shown in FIG. 丨, a wiping cloth formed by knitting polyester yarn is provided. Although a knitted fabric of 100% polyester is preferred, it has also been criticized that other fabrics containing woven and non-woven fabrics and other fibers containing nylon or the like are desired. It can also be used at that time. As shown in the circle, the wiping cloth 10 includes a door wipe surface 12 and several peripheral edges. In the illustrated and possibly preferred embodiment, the wiping cloth 10 is a geometrical shape of a substantially quadrangle, whereby the wiping cloth 10 includes a first-peripheral edge 14 and an opposite second peripheral edge 16 There are also a third peripheral edge 18 and a fourth peripheral edge 2q extending between the first peripheral edge 14 and the second peripheral edge 16 in a substantially right angle relationship. Although the wiper is generally square in configuration, it should also be understood that the wiper 10 may also employ any number of other geometric shapes, including but not limited to rectangular or other convenient polygonal configurations, Such as triangles, five 1244519 five, description of the invention (edges, hexagons, humanoids, etc. may be desired. As is known, the wipes 10 are made of-larger enough to form multiple wipes The-extended length and-width of the fabric cloth are cut. According to a preferred embodiment, the wiping cloth 10 is cut from the larger cloth cloth according to a pattern, hunting for this, the first and second peripheral edges 14 , 16 extend in a so-called, vertical machine direction " configured to be substantially transverse to the longitudinal direction of the fabric cloth. Correspondingly, the third and fourth peripheral edges 18, 20 are preferably substantially parallel to the fabric. The fabric in the longitudinal direction of the cloth is cut in the machine direction. As shown in the figure, the first peripheral edge 14 and the first peripheral edge 16 extending perpendicular to the machine direction are each preferably provided along their length with a By one Knife or sealing edges 24, 26 formed by a laser cutting operation, seal the fibers with a rough cut edge along the wiper 10. In addition, the first and second peripheral edges 14, 16 are preferably each Non-continuous fusion rims 28, 30 extending inwardly are provided, which extend inwardly towards the inner wiping surface 12 from adjacent sealing edges 24, 26. As shown, the discrete fusion rims 28, 30 are preferably Formed by a number of separate welding points 34, 36, at which the thermoplastic filaments (such as polyester) forming the wiping cloth 10 have been positioned to dazzle and therefore fused together during re-solidification. It is expected that 'melting points 3, 4, 36 extending perpendicular to the machine direction may be applied in a predetermined repeating pattern, which uses a patterned embossing element (such as an ultrasonic guide corner) to form a wipe 1 〇Operate on one side of the fabric 'This surface is relative to a patterned iron station and is arranged on the other side of the fabric forming the wipe 10 and falls on a fused piping corresponding to the discontinuous extension inward 28, 30 desired width The surface within the width. 10 1244519, Moon and Sun (revised) Replacement Page 5. Invention Description (Of course, other pattern fusion techniques can also be used, such as using a patterned support on one side of the fabric, and A hot ironing element is applied across the opposite sides to apply a series of weld points 34, 36. According to the illustrated and possibly preferred embodiment, the discontinuous weld piping 28, 30 extending in the vertical machine direction is relatively It preferably has a fairly narrow width in the range of about 0.3 mm to 1.6 mm, and most preferably has a width in the range of about 1.0 mm to 1.4 mm, although larger or smaller depths are desired It can also be used in the same way. As shown, according to a specific example, the welding points 34 and 36 can be substantially rectangular in configuration and are arranged in a tablet-like pattern in the discontinuous welding piping 28 and 3G. Thereby, the length dimension of the noise points 34, ^ extends substantially parallel to the outer sealing edges 24, 26. Of course, it is anticipated that any number of other geometric configurations may equally be used, including, by way of example only, and not limitation, separate, generally circular joints, long elliptical joints, square turning points And other geometric shapes. In addition, due to their discontinuous nature, these junctions can also be configured to present an information transfer icon, such as a company label, patent number, or the like. According to the exemplified example in which the welded points are substantially rectangular in configuration, the rectangle forming the welded points preferably falls within a range of about 0.75 with a width multiplied by about 3 °, and The defined rows and columns are separated by approximately 1 mm. The rows and columns are preferably separated from the melting points in the adjacent rows and columns by approximately ^ planes, and the rows and columns are in a staggered relationship and are slightly offset from each other. … It is believed that the use of these discontinuous hemming hem 28, 30 can reduce the generation of particulate matter when applied in a direction parallel to the hem, which is 1244519

V. Description of the invention (9) By allowing the force to more evenly distribute through the matrix formed by the interstitial regions located between the welding points 3 3 6, the concentration of forces leading to the localized fracture of the fibers is thus reduced. It is expected that the load distribution can be further strengthened by pre-pressing the wiping cloth 10 in a direction perpendicular to the machine before introducing the discontinuous fusion piping 28, 30. According to a possibly better example, the pre-pressing of the fabric can be carried out by stretching the fabric forming the wiping cloth at the time of introduction of the welding points 34, 36, and this is generally locked in a tensile relationship live. This stretching can be performed by using a -stretching frame or other means known to those skilled in the art. After the joints 34 and 36 are introduced, the fabric is loosened, and a part of the extension in the body of the wipe 10 is loosened, but the fusion point 6 is generally locked to extend along the peripheral edges 4 and 16. As shown in the figure, the third and fourth peripheral edges 18, 20 extending in the machine direction preferably have a slightly different configuration. As can be seen best when referring to the second figure at the same time, the wiper The third and fourth peripheral edges 18 extending in the machine direction of 1G are formed by folding the edges inwardly to form a double-layered hem 38, 40. Apply within the double-layered hem 38, 40 Refined melt adhesion areas 48, 50, sealed with double-layer piping%, 40 in place. As is not the case, according to an embodiment, the melt adhesion areas 48, 50 can be made to be-made by fusion fusion joints Patterns 44 and 46 are formed by melting and positioning the positioning pattern of polyester or other thermoplastic filament components in the manner described above. However, if desired, fusion The stern areas 48 and 50 can also be solid melts extending from the inner edge of the double-layer piping%, 40. The form of melting strips. 12 1244519 92m V. Description of the invention (10 cars X is preferably a double-layered hem 38, 40 which is smooth and has substantially no fusion welds. It provides an edge structure, which is generally not resistant to fiber breakage during stretching. Sensitive, and therefore considered to promote edge integrity when stretched, thereby reducing particle generation. The fusion attachment areas 48, 50 (whether intrinsically solid or discontinuous) are preferably broad enough to establish a Stable fusion bonding relationship. As an example and not a limitation, the fusion bonding area is composed of open welding points 44 and 46 as shown in the figure, wherein the welding points 44 and 46 are generally rectangular in configuration and It has a range of about 0.75 mm in width and a range of about 3 mm in length, and is arranged in an offset block pattern into rows and columns separated by about 0.5 mm, which is expected to be usable At least 3 rows or more, or more preferably about 4 rows or more. Of course, the other welding points 44 and 46 described above are related to the welding piping 28 and 30 extending perpendicular to the machine direction. If you want It can also be used. Although the welding points 34, 36 extend along the wiper 10 perpendicular to the machine direction, it is expected that the welding points 44 arranged along the machine direction can be patterned using any suitable pattern. Fusion devices are applied, including by way of example but not limitation, ultrasonic bonding devices using a patterned anvil wheel or a patterned endothermic support that is used with the same ironing heat source. According to an embodiment, the wiper 1 can Efficient and automatic method. This method cuts a long strip of fabric continuously to produce multiple parallel strips of desired width. It can be cut by laser or hot knife to seal the edge. The strip is folded along the passing edge The device is conveyed through a channel, and a blade or pedal element is used to continuously fold the lateral edges of the strip to form the desired double-layered hem 38,40. Afterwards, the strip passes through the strip advance channel, which is generally transverse to the strip. 13 1244519

V. Description of the invention (11) The ultrasonic bonding station is configured, in which the melting points 44 and 46 are formed along the lateral peripheral edge I to form the fusion zones 48 and 50. For example, it is used to form the fusion zone 48, The ultrasonic splicing stations of the welding points 44 and 46 in 50 are generally similar to the device disclosed in U.S. Patent No. 6,001,442 of RochweH, jr., Which incorporates a long hook and a rod-like pattern to Anvil positioned in the direction of the strip advance. The content of this patent is incorporated herein by reference. Thereafter, the inwardly extending fusion bead 28, 30 extending perpendicular to the machine direction is advanced by adding substantially transversely to the strip. The ultrasonic bonding unit of a long hook and a rod-like patterned anvil positioned in the direction is applied to the width of the long strip. Use a hot knife or laser to cut the wiping cloth 10 from the long strip, and the hot knife Or the laser can form the sealing edges 24, 26. Of course, other automatic or manual techniques can also be used. As is understood, the present invention has a wide range of different structures. For example, one configuration is shown in Figure 3, where Corresponds to the element shown in Figure 1 It is indicated by its "number plus 100. As shown, the embodiment of Fig. 3 is substantially the same as that of Fig. 1, but the double-layered piping 38, 40 is replaced by extended continuous fusion attachment areas 148, 150, which are generally Extend to adjacent peripheral edges 11 8, 120. In Fig. 4 is shown another embodiment of the present invention, in which the same symbols are added to 200 with respect to the elements shown in Fig. 1, as shown in the figure. In this embodiment, a double-layer folded edge structure is applied along each of the peripheral edges 214, 218, and 220. This configuration forms a vertical machine direction extending along the first and second peripheral edges with a bucket and 216 The double-layer piping 26〇, 262, and the discontinuous fusion piping 228, 23 〇 arranged in it are shown in Figure 5. It is believed that this configuration can also reduce the generation of particles when using the wiping cloth 21 〇 Of course, If necessary, melt. The piping 228, 230 can be replaced by a substantially continuous fused attachment area, such as 1244519

A strip extending inward from the double-layered piping 260, 262. In addition to reducing the generation of particles by stretching the edges of the wiping cloth, the particle impact of the particles according to the present invention can be reduced on the body A by the choice of the material forming the wiping cloth. According to a preferred embodiment, the wiping cloth of the present invention is formed of a polymer fiber including a low inorganic additive. In particular, the fibers forming the wiping cloth of the present invention are preferably formed of so-called m, clear polyester. Such fibers are substantially free of dioxin 2) or other metal-based sunscreen agents commonly used to impart polyacetate with traditionally bright white characteristics. Titanium dioxide and other metal ion compounds become solutions when placed in a highly acidic environment. Because many electronics manufacturing processes use high-concentration acid solutions, such as sulfuric acid (H2S〇4) 1, please recognize that it is best to reduce the appearance of ionic constituents in any particles that may be produced 'in order to reduce the dust-free reusability. Accumulation and concentration of such ions in a room acid solution. According to a preferred example, the fiber of the wiping cloth formed according to the present invention is characterized by the concentration of the inorganic ion composition at a certain degree τ, so that after the fiber is completely burned, the 'remaining ash content is less than about 0.30% of the original fiber weight. It is preferably 6 to 0.001% by weight of the original fiber, and more preferably about 0.30 / 〇. Fibers suitable for use in forming the wipes of the present invention are commercially available from E. Ϊ DuPont de Nem (n ^ s.) In Wellington, Delaware, USA. Tests related to the edges of cleanroom wipes with different configurations The particles are generated to the extent that the edge of the wiper is extended by 6 cm so that its length corresponds to the length after applying a force of 6¾. The edge of the wiper is extended in a vertical position on a μ cm funnel, and the funnel is set on Link to _Airdrop particle building 1244519 V. Description of the invention (U) Article 911224G5pltittiL Revised page shirt Year? Month 4th revision (more revision date)

July 1993 A dynamic probe end of the son. The inverted wipe portion was stretched and maintained under tension for two seconds, and then removed while still under tension. After the stage is stabilized, the particles produced are recorded to be greater than or equal to 0.3 micron. The present invention will be described with reference to the following comparative examples. Example 1 The structure of the edge of the clean room wiper, A〃 is generally as shown in Figure 该. The edge is a double-layer overlapping edge in the machine direction, and a discontinuous fusion edge perpendicular to the machine direction. 70% of Danni 36 filaments are gathered and composed. The yarn has a length of 4 lines per inch and a length of 40 pairs per line. The weight is 3.7 pans per square yard. The double-folded edge of the 31st wiper cloth in the machine direction and the discontinuous edge perpendicular to the machine direction are particles generated after applying tension according to the above test procedure. The test results are recorded in Table 1. ^ Example 2 The clean room wiping cloth τ is formed of the fabric as described in Example 1 and has a heat-sealed edge in the machine direction as well as in the vertical machine direction. Heat sealing is performed according to the method shown in U.S. Patent No. 5,069,735. Test the 31st wiper n-direction and vertical machine-direction edge portions according to the above-mentioned test procedure. The test results are recorded in Table 1. Example 3 Clean room wipes, 'c,' in the machine and vertical machine directions, and have the fusion edge extended inwardly as disclosed in U.S. Patent No. 4, Feng Yi of PaIey et al., And were purchased from the market. The fabric forming the wiping cloth is made of filament polyester yarn of 37x 47 per double-knit structure and weighs 16

Households: 4, 2 ounces per square yard. The above test procedure was used to test the "wipe machine and the edge of the machine direction perpendicular to the machine direction under applied pressure. The test results are recorded in Table 1. Example 4 No dust to the wiper, ET on the machine and perpendicular to the machine It has a hot M edge in the direction. The heat seal is implemented according to the teachings of US Patent No. 5, _, 735. The wiper formed by the fabric is a pair of knitting with polyester yarn with 70 denier 36 filaments. Layer structure, and the yarn has 43 columns, 37 mother columns, 37 columns, and the weight per square yard is ^ ounces. The machine for testing the 31st wiping cloth is applied under the above test procedure under pressure! | And The edge part in the vertical machine direction. The test results are recorded in Table 1. Table 1 Wipes Type A Machine direction A Vertical machine direction B Machine direction B Vertical machine direction C Machine direction Vertical machine direction D Machine side and D Vertical machine H 1 ^ 1 Average number of particles 409 1357 3702 1433 2875 3731 々_ 2030 σα y] 1¾ 1598 Number of particles 936 2205 5955 2754 6018 7173 3712 2601 Low number of particles 84 203 1471 402 1020 1643 879 682 Standard From 233 604 1455 556 1251 1634 721 614 Statistically average lower confidence limit 301 1078 3029 1176 2296 2975 1697 1314 Statistically average upper confidence limit 516 1636 4375 1690 3454 4487 2363 1882 The above data determines the double-layered edge structure of the wiper and Α〃 This results in an improvement in the average and actual number of particles produced under tension. Similarly, in the use of a non-folding extended piping area, the inwardly extending discontinuous fusion piping structure of the A, Wiper cloth produces more than the C, Wiper wipe. Cloth inward extension block fusion 17 1244519

V. Description of Invention (15)

Fewer grains. The present invention has been described above by means of preferred embodiments, structures, and steps. What needs to be treated is that these embodiments, structures, and steps are illustrative of the present invention and should not be used to limit the present invention. Those skilled in the art can come up with improvements and changes to the present invention based on the principles of the present invention. Therefore, the present invention should extend these improvements and changes' and may be included in the scope and spirit of the present invention;

Pan principle. S [Brief description of the drawings] FIG. 1 is a front view of a specific example of a wiping cloth according to the present invention; FIG. 2 is a plan view; FIG. 3 is a plan view; Taken drawing; Front view of another specific example of the wiping cloth according to the present invention

Fig. 4 is a plan view of another specific example of the wiping cloth according to the present invention; W Fig. 5 is a view taken along line 5_5 in Fig. 4. 1244519 One — one ^ — Revised (corrected) correction page; 5. Description of the invention (representative symbols of the main part of the figure 10) Wipe cloth 130 Fusion piping 12 Internal wiping surface 134 Welding point 14 Peripheral edge 136 Welding point 16 Peripheral edge 138 Double-layer piping 18 Peripheral edge 140 Double-layer piping 20 Peripheral edge 144 Dazzling contact 24 Sealing edge 146 Welding point 26 Sealing edge 148 Fusion attachment area 28 Fusion edge 150 Fusion attachment area 30 Fusion edge 210 Wipe cloth 34 Welding point 212 Internal wiping surface 36 Welding point 214 First peripheral edge 38 Double edge 216 Second peripheral edge 40 Double edge 218 Peripheral edge 44 Weld point 220 Peripheral edge 46 Weld point 228 Fusion edge 48 Fusion attachment area 230 Fusion edge 50 Weld attachment area 234 Weld point 110 Wipe cloth 236 Weld point 112 Internal wiping surface 238 Double-layer rim 114 Peripheral edge 240 Double-layer rim 116 Peripheral edge 244 Weld point 118 Peripheral edge 246 Weld point 120 Peripheral edge 248 Fusion attachment area 124 Seal edge 250 Fusion attachment area 126 Sealing edge 260 Fusion trim layer 262 piping 128 double trim 19

Claims (1)

Sixth, the scope of application for patents No. 091122405 Patent application for amendments to the scope of patent applications, the date of revision · December 1, 1992: a type of cleaning cloth suitable for use in a clean room environment, which at least partially has a machine direction and A weaving cloth perpendicular to the machine direction, the weaving cloth is formed by a plurality of yarns containing thermoplastic filaments, the wiping cloth includes an inner and a plurality of configured to surround the inner: Yao relationship Peripheral edges' and-discontinuous hem-piping areas are configured at least within one of the perimeter edges and extend substantially parallel to the = peripheral edges. Separate material points, material fusion materials are formed by positioning melt grafting of these thermoplastic filaments, whereby the equivalent points are arranged in a matrix of unrefined material 2 · The wiper of the first scope of the patent is requested, in which the thermoplastic filaments are for the purpose of I. 3. The wiping cloth according to item 2 of the patent application scope, wherein the woven fabric is formed substantially entirely of polyester. 70 4. The wiping cloth according to item 3 of the patent application range, wherein the woven fabric is heat-fixed at a temperature of 180 to Fahrenheit, and wherein the yarns are not heated at a temperature exceeding 300 Fahrenheit . 5. If the wiping cloth according to item 3 of the patent application scope, wherein the poly S is substantially free of inorganic ion additives, thereby the complete combustion of the poly vinegar produces _ gray content! Not more than about 0 to about m of the initial weight of the polyacetate. The wiping cloth as described in item 5 of the patent application range, wherein the woven fabric is selected from Yue Xiu (replacement page, Shen Jing patent range by knitted fabric, shuttle Groups composed of woven and non-woven fabrics. For example, the wiping cloth of item 6 of the patent application scope, in which the yarn range of the woven fabric ^ inside ^ resistance is in the range of about 15 to about 250 denier 8 · = The wiping cloth of the seventh scope of the patent application, among which the separated junctions located in the discontinuous fading region are induced by ultrasonic waves. 9.::The seventh scope of the patent application scope Wiping cloth, where the separate welded joints are in the form of slender geometrical shapes. The slender geometrical shapes are arranged in a series of rows substantially parallel to the peripheral edge in the relationship of the ends ^. 10 = Patent application The wiping cloth of the item 9 of the range, in which the separated points are arranged staggered relative to the separated glare points located in the adjacent rows and columns, and a brick pattern is formed. And U. = Please The wiping cloth of the first item of the profit range, wherein the _ cloth in the configuration = edge, Among them, the first non-continuous joint piping is disposed within and substantially parallel to the first perimeter edge, and the second discontinuous joint piping region is disposed on the first periphery of the first disc. The "second peripheral edge" in which the edges are opposite is substantially parallel to the second peripheral edge. Continued A is the wiping cloth of item n in the patent application scope, wherein the first peripheral edge is tied to the weaving cloth perpendicular to the machine direction Inside extension 13. If the wiping cloth of the nth item of the scope of patent application, among which-the third., The fusion piping area is arranged in the _th =-not even the younger brother-within the surrounding money and generally π 9 1244519 Six, the scope of patent application Parallel to the third peripheral edge, and one of the fourth discontinuous fusion piping regions is disposed within the fourth peripheral edge that is in opposition to the third peripheral edge and is substantially parallel to the fourth peripheral edge. 14. The wiping cloth according to item 13 of the patent application scope, wherein the first and second peripheral edges are extended in the machine perpendicular to the machine direction, so that: wherein the third and fourth peripheral edges are connected to the The cloth extends in the machine direction. A-A cleaning cloth suitable for use in a clean room environment, which is at least partially composed of a woven cloth having a machine direction and a machine direction perpendicular to the machine direction. The strip is formed of a yarn containing thermoplastic filaments. The wiping cloth includes an inner portion and a plurality of peripheral edges configured to surround the inner portion, wherein at least one of the peripheral edges includes a folded piping and -It is arranged in the kneading and attaching area of the folded piping ^, wherein the kneading and attaching area is formed by the fusion welding of the thermoplastic filaments. The thermoplastic filament is made of poly S. The above-mentioned wiper cloth as described in item 16 of the patent application scope, wherein the woven fabric is formed entirely of polyester. 18 etc. The wiping cloth according to item i 7 of the patent application range, wherein the woven fabric is heat-fixed at a temperature of 180 to 300 degrees Fahrenheit, and wherein the yarn is not heated at a temperature exceeding 300 degrees Fahrenheit. / AAs the wiping cloth of item 17 of the scope of patent application, wherein the poly vinegar is substantially free of inorganic ion additives', thereby the complete combustion of the poly vinegar produces 22 1244519 ▽, the scope of patent application 〇: 3 1 Not more than about the initial weight of the polystyrene. To about 20. The wiping cloth according to item 19 of the patent application range, wherein the woven fabric is selected from the group consisting of a knitted fabric, a woven fabric, and a non-woven fabric. L. As for the wiping cloth in the scope of application for patent No. 20, the yarn forming the woven fabric has a linear density falling within a range of about 15 to about 250 denier. The wiping cloth around the 21st month of the patent application of the patent application is located in the coupling attachment area and is induced by ultrasound. 23. For example, the wiping cloth covering the 15th area of the patent application, where the fusion attachment area includes several Roughly separated splendid contacts are formed by positioning the molten filaments of the thermoplastic filaments, whereby the knife-opened splendid contacts are arranged in an undissolved material 24. The wiper cloth according to item 23 of the patent application, wherein the substantially separate welding points are in an elongated geometric figure, and the elongated geometric figure is in an end-to-end relationship. It is arranged in a plurality of rows substantially parallel to the peripheral edge. 25. The wiping cloth according to item 24 of the application of the patent, wherein the separate welding points are relative to the separate welding points located in the adjacent rows. It is arranged in a staggered manner, whereby a brick pattern is formed. 26. The wiping cloth according to item 15 of the scope of patent application, wherein the wiping cloth is quadrangular in configuration, and one of the first folding double-layer rolling borders is fixed First peripheral edge and its order Defining a second folding double piping to the extracted certificate to replace more a month page 2. The scope of patent application = the second U44519 in which the peripheral edges are in an opposite relationship. 27. For example, the wiping cloth for item 26 of the patent application scope, wherein the peripheral edge of t extends in the machine direction of the woven cloth. The second 28. The 26th item of the wiper layer rolls the boundary-the third peripheral edge, and the brother Erzhefeng double-roller Zongzong Youdou pull eighth middle school a fourth folded double third peripheral edge of the fourth peripheral 29 ·: a kind of applicable A wiping cloth in a clean room environment is constructed at least partially with a machine direction and a woven fabric perpendicular to the machine direction. The woven fabric is formed of a plurality of yarns containing thermoplastic filaments. The wiper cloth includes: an interior and four peripheral edges configured to have a surrounding relationship with the interior, wherein at least one of the peripheral edges includes a folded double-layered hem and-arranged on the folded double-layered hem Inner spoon melting mouth attachment area 'wherein the suanxuanhe attachment area is formed by the melting and splicing of the thermoplastic filaments, and wherein at least one of the peripheral edges includes a heat-sealed edge and a Should be hot A discontinuous fusion piping region extending inwardly of the sealed edge, wherein the discontinuous fusion piping region includes a plurality of substantially separated fusion points formed by melt fusion of the thermoplastic filaments, whereby The separate welding points are arranged in a matrix made of unmelted material. 30. The wiping cloth according to item 29 of the patent application scope, wherein the wiping cloth is substantially a right-angled quadrangle, and one of the first discontinuous fusion piping regions is disposed within a first peripheral edge and is substantially parallel to the first A peripheral edge and one of the second discontinuous fusion piping areas are allocated. 24. The scope of the patent application is set within the second peripheral edge that is in opposition to the first peripheral edge and is substantially flat against the second peripheral edge. Edge, and == roll! Defines a third peripheral edge extending between the first-peripheral edge and the first-peripheral edge, and the folding double-layered rolling boundary is set to be opposite to the third peripheral edge = the fourth periphery edge. Relationship 31. The wiping cloth according to item 30 of the patent application scope, wherein the peripheral edge of the first cloth is tied to the weaving cloth and extends in a direction perpendicular to the machine direction, and the third and fourth peripheral cloths are tied to the cloth. In the machine direction of the cloth A: A type of clean room wiping cloth, which includes at least part of the cloth: the cloth is formed by several yarns containing filaments, and the second periphery of the wiping cloth ==; =:? _ About off For. There is a low amount of particles released under tension, whereby during use simulation there are on average less than _ large size:: particles are generated 'where at least-a peripheral edge of roughly = 6 cm of tension The segment is stretched in a particle collection environment in a vertical direction 'by which' the segment is under the pull force of gravitational gravity, and the segment is maintained in the particle collection environment under the stretched condition_ Hour-2 seconds ㈣ 'and the segment is removed from the particle collection environment before the stretch condition is lifted. 33. If the wiper of the scope of patent application No. 32, at least one of the peripheral edges is characterized by: low tension release under tension, the scope of the patent application comes out of this, during a use simulation process there is On average, less than 900 particles having a size greater than or equal to 0.3 micrometers are generated, wherein a substantially tension-free 6 cm segment of the at least one peripheral edge is stretched in the -particle collection material in a vertical direction by Therefore, the segment is under a pulling force of 6 square gravity, and the segment is maintained in the particle collection environment for a period of 2 seconds under the stretched condition, and the segment is stretched after the stretch Prior to the release of the condition, the collection environment was removed from the ㈣34. For example, the wipes for item 32 in the scope of patent application, where the peripheral edges up to ^-are characterized by: under tension-low amount of particles released 'borrowed Therefore, during the use simulation, an average of less than or equal to G. 3 microns in size was generated, wherein a substantially tension-free 6 cm segment of the at least one peripheral edge was in the particle collection 2 In a vertical direction Stretch, thereby, the segment is under the pull of two gravity 'the segment is maintained under the stretched condition ^ the particle collection environment lasted-a period of 2 seconds, and the segment opened in violation of Prior to the release of the stretched condition, the particle collection environment was moved six times to seek out the migration: To:-The characteristics of this are: there is a low amount of particles under tension, which is lower than the average during the use of the simulation Particles larger than or equal to 0.3 micrometers are produced, in which the at least one edge of a substantially tension-free "branch" is stretched in the vertical direction, whereby the segment L 124451 (Revised) Page 6. The scope of the patent application is under the pulling force of 6 square gravity, and the segment is maintained in the particle collection environment under the stretched condition for a period of 2 seconds, And the segment is removed from the particle collection environment before the stretch condition is lifted. 36. The wiping cloth according to item 32 of the patent application scope, wherein at least one of the peripheral edges is characterized by: Under a low amount of particles released 'Take this, in-simulation During use, an average of less than or equal to 0.3 micron particles is generated, wherein a substantially tension-free 6 cm segment of the at least one peripheral edge is in a particle-set environment in a -vertical direction. Stretching, whereby the segment is under a tensile force of 6 crushing gravity, the segment is maintained in the particle collection environment for a period of one second under the stretched condition, and the segment is The particle collection environment is then removed before the stretch condition is lifted 27