WO2010001761A1 - 洗浄用スポンジローラ - Google Patents
洗浄用スポンジローラ Download PDFInfo
- Publication number
- WO2010001761A1 WO2010001761A1 PCT/JP2009/061347 JP2009061347W WO2010001761A1 WO 2010001761 A1 WO2010001761 A1 WO 2010001761A1 JP 2009061347 W JP2009061347 W JP 2009061347W WO 2010001761 A1 WO2010001761 A1 WO 2010001761A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- protrusion
- sponge roller
- cleaned
- cleaning
- roll body
- Prior art date
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 61
- 239000011148 porous material Substances 0.000 claims abstract description 40
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims abstract description 8
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 claims abstract description 8
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims description 55
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 210000003491 skin Anatomy 0.000 description 34
- 239000002245 particle Substances 0.000 description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 239000000463 material Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 210000001519 tissue Anatomy 0.000 description 8
- 238000005259 measurement Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 235000012431 wafers Nutrition 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000012805 post-processing Methods 0.000 description 5
- 206010016807 Fluid retention Diseases 0.000 description 4
- 238000000635 electron micrograph Methods 0.000 description 4
- 230000003749 cleanliness Effects 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241000135309 Processus Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B9/00—Arrangements of the bristles in the brush body
- A46B9/005—Arrangements of the bristles in the brush body where the brushing material is not made of bristles, e.g. sponge, rubber or paper
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
- G11B5/8404—Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
- H01L21/67028—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like
- H01L21/6704—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for wet cleaning or washing
- H01L21/67046—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for wet cleaning or washing using mainly scrubbing means, e.g. brushes
Definitions
- the present invention relates to a cleaning sponge roller used mainly for scrub cleaning in a cleaning process among manufacturing processes of electronic components such as semiconductor electronic device wafers, silicon wafers, and hard disks.
- Scrub cleaning refers to rubbing by bringing a plurality of protrusions on the outer peripheral portion of the roll body into contact with the surface to be cleaned and rotating a sponge roller through a rotating shaft while supplying water or other cleaning liquid to the contact portion between the two. It is something to wash.
- the sponge roller when used for the first time, it is necessary to increase the cleanliness of the sponge roller itself (particularly, the region of the outer surface of the protrusion that contacts the surface to be cleaned), and before scrub cleaning the surface to be cleaned.
- the sponge roller is cleaned.
- a sponge roller is attached to the cleaning device, and scrub cleaning is performed on the dummy surface to be cleaned.
- scrub cleaning particles having a relatively small particle size removed from the surface to be cleaned and particles having a relatively large particle size such as an abrasive circulate along with the cleaning liquid.
- the presence ratio (area ratio) of the sponge roller material is high, and particles having a relatively large particle size are easily captured during cleaning. For this reason, the trapped particles may come into contact with the surface to be cleaned and cause damage.
- an object of the present invention is to provide a cleaning sponge roller that can shorten the start-up time of the cleaning process, improve the life cycle of the product, and reduce the damage to the surface to be cleaned.
- the cleaning sponge roller of the present invention is composed of a polyvinyl acetal porous material having elasticity in a wet state, and is integrally formed on a substantially cylindrical roll body and an outer peripheral surface of the roll body.
- the surface to be cleaned is cleaned by rotating the plurality of protrusions in contact with the surface to be cleaned.
- the outer surface of the protrusion has an internal exposed surface that comes into contact with the surface to be cleaned during cleaning in a state where the internal structure of the protrusion is exposed.
- the outer surface of the protrusion means the entire surface of the protrusion including the top outer surface and the outer peripheral surface, and an internal exposed surface is formed on at least a part of the entire surface.
- the opening ratio of the internal exposed surface is preferably 50% or more, and more preferably 60% or more.
- the internal exposed surface only needs to include at least the front region in the rotational direction of the top of the protrusion, and the outer surface of the top of the protrusion may be formed as the internal exposed surface. Further, the protrusion may have a cylindrical shape having a diameter larger than the height from the outer peripheral surface to the top outer surface.
- the total area of the top outer surfaces of all the protrusions is preferably 50% or less with respect to the area of the virtual contact outer peripheral surface passing over the outer end of each protrusion. Furthermore, when the surface to be cleaned is a 300 mm diameter wafer, the number of protrusions is preferably 100 or more.
- the skin layer has a lower porosity than the internal tissue, and the surface of the skin layer is exposed to the internal tissue.
- the aperture ratio is lower than that. For this reason, the wash water is less likely to circulate in the skin layer than in the internal tissue.
- the outer surface of the protrusion has an internal exposed surface in which the internal structure of the protrusion having a higher porosity (aperture ratio) than the skin layer is exposed, and this internal exposed surface is a surface to be cleaned during cleaning. Contact. For this reason, when using the sponge roller for the first time, scrub cleaning is performed on the dummy surface to be cleaned in order to increase the cleanliness of the sponge roller itself (particularly, the region of the outer surface of the protrusion that contacts the surface to be cleaned). Time to perform (start-up time / break-in time) can be shortened.
- the opening ratio is relatively high on the internal exposed surface, even if a particle having a particle size smaller than the opening on the internal exposed surface enters the protrusion from the internal exposed surface, the particle protrudes.
- the life cycle of the product can be improved.
- the aperture ratio is relatively high, and the ratio (area ratio) of the cleaning sponge roller material (polyvinyl acetal porous material) is low. For this reason, it is difficult to capture particles having a relatively large particle diameter during cleaning, and it is possible to prevent the surface to be cleaned from being damaged by the captured particles.
- the outer peripheral surface of the roll body may be covered with a skin layer having an aperture ratio lower than that of the internally exposed surface of the protrusion.
- the cleaning liquid flowing from the inner side to the outer side of the cleaning sponge roller flows out from the inner exposed surface of the protrusion rather than the outer peripheral surface of the roll body. Easy to do. For this reason, it is possible to further reduce the break-in time, improve the life cycle of the product, and suppress the application of damage to the surface to be cleaned.
- the outer peripheral surface of the protrusion may be covered with a skin layer having a lower aperture ratio than the internally exposed surface.
- the cleaning liquid that flows from the inside of the cleaning sponge roller to the outside through the protrusion flows out from the inner exposed surface rather than the outer peripheral surface of the protrusion. Easy to do. For this reason, it is possible to further reduce the break-in time, improve the life cycle of the product, and suppress the application of damage to the surface to be cleaned.
- the internal exposed surface may be inclined toward the outer peripheral surface of the roll body on the front side in the rotation direction of the protrusion.
- the inner exposed surface is likely to come into contact with the surface to be cleaned during scrub cleaning, thereby further reducing the break-in time, improving the product life cycle, and preventing damage to the surface to be cleaned. be able to.
- the cleaning sponge roller according to the present invention can shorten the start-up time of the cleaning process, improve the product life cycle, and reduce damage to the surface to be cleaned.
- FIG. 3 is a sectional view taken along the line III-III of the protrusion of the sponge roller of FIG. 2.
- It is an external appearance perspective view of the protrusion of FIG. It is a side view which shows typically the use condition of the sponge roller of FIG.
- a cleaning sponge roller (hereinafter simply referred to as a sponge roller) according to an embodiment of the present invention will be described with reference to the drawings.
- FIG. 1 is a perspective view showing a state in which a surface to be cleaned is cleaned by the sponge roller according to the present embodiment
- FIG. 2 is a side view of the sponge roller of FIG. 1
- FIG. 4 is an external perspective view of the protrusion of FIG. 3
- FIG. 5 is a side view schematically showing the use state of the sponge roller of FIG. 2
- FIG. 6 is an enlarged view of the main part of FIG.
- FIG. 8 is a perspective view showing a mold for forming the sponge roller of FIG. 2
- FIG. 8 is a cross-sectional view showing a method of manufacturing the sponge roller of FIG. In FIG. 1, the protrusions are not shown.
- the object 10 to be cleaned is a thin disk-shaped wafer, and the surface 10a to be cleaned is the front and back surfaces of the object 10 to be cleaned.
- the pair of upper and lower sponge rollers 1 that perform scrub cleaning includes a substantially cylindrical roll body 3 and a plurality of protrusions 5 that are integrally formed on the outer peripheral surface 3 a of the roll body 3.
- Each protrusion 5 has a cylindrical shape, and has a top outer surface 5a and an outer peripheral surface 5b.
- Each roll body 3 is mounted with a substantially cylindrical rotating shaft 2 formed of a hard material such as metal or plastic.
- the shape of the protrusion 5 is not limited to the cylindrical shape.
- the upper and lower rotary shafts 2 are spaced apart from each other by a predetermined distance and are arranged substantially in parallel, and the surface to be cleaned 10a is arranged substantially parallel to the rotary shaft 2 (upper roll body 3).
- the cleaning liquid is supplied to the surface 10 a to be cleaned, and the rotating shaft 2 is rotated (the direction of rotation is indicated by an arrow 7).
- the surface to be cleaned 10a is rotated about the rotation axis 6 substantially orthogonal to the rotation axis 2 (the direction of rotation is indicated by an arrow 8). That is, when the top outer surface 5a of the protrusion 5 of the roll body 3 is in rotational contact with the rotating surface 10a to be cleaned, the surface 10a to be cleaned is scrubbed.
- the arrangement of the pair of sponge rollers 1 is not limited to the vertical position as described above.
- the pair of sponge rollers 1 are respectively placed in a standing state with the sponge rollers 1 standing upright, or arranged in an oblique direction. It can be arranged in various ways.
- the rotation shaft 6 of the object to be cleaned 10 may be set so as to be substantially orthogonal to the rotation shaft 2 of the sponge roller 1.
- the pair of sponge rollers 1 and the rotation shaft 2 are erected in a substantially vertical direction. In that case, the rotating shaft 6 of the object to be cleaned 10 may be arranged in a substantially horizontal direction.
- the sponge roller 1 (roll body 3 and protrusion 5) is made of a polyvinyl acetal porous material (PVAt porous material) that has elasticity in a water-containing state.
- PVAt porous material is cured in a dry state and softened in a wet state. Further, the PVAt porous material is excellent in water absorption and water retention, exhibits favorable flexibility when wet and moderate rebound resilience, and is excellent in abrasion resistance.
- the rotating shaft 2 is inserted into the inner diameter portion of the roll body 3 and fixedly supports the roll body 3.
- the outer peripheral surface of the rotating shaft 2 and the inner peripheral surface of the roll body 3 may be fixed by an adhesive, and the outer diameter of the rotating shaft 2 is formed larger than the inner diameter of the roll body 3.
- the roll body 3 may be fixedly supported on the rotary shaft 2 by the elastic force of the roll body 3 by press-fitting into the inner diameter portion of the roll body 3. Further, when the roll body 3 is manufactured, the roll body 3 may be fixed or supported on the rotary shaft 2 by using the rotary shaft 2 instead of the core rod 29 shown in FIG. In this case, the sponge roller 1 (roll body 3) after the reaction is taken out from the mold 21 with the rotating shaft 2 and washed with water. By such fixed support, the roll body 3 rotates together with the rotating shaft 2.
- the top outer surface 5a of the protrusion 5 has a curved surface shape in which the front side in the rotation direction 7 of the protrusion 5 (sponge roller 1) is inclined toward the outer peripheral surface 3a of the roll body 3.
- the distance h between the topmost end (outer end) of the top outer surface 5a and the lowermost end (upper end of the outer peripheral surface 5b of the protrusion 5) is preferably 0.2 mm or more.
- the top outer surface 5a of the present embodiment is such that the front and rear sides in the rotational direction of the protrusions 5 are the outer periphery of the roll body 3 so that scrub cleaning can be performed under the same conditions even when the sponge roller 1 is reversed.
- the curved surface shape is symmetrically inclined toward the surface 3a.
- the diameter D of the protrusion 5 is set larger than the height H of the protrusion 5 (the distance from the outer peripheral surface 3a of the roll body 3 to the topmost end of the top outer surface 5a).
- the plurality of protrusions 5 are arranged in the same arrangement pattern over almost the entire outer peripheral surface 3a of the roll body 3.
- the number and size of the protrusions 5 are all the virtual contact outer peripheral surface where the total area of the top outer surface 5a of each protrusion 5 passes over the outer end of the top outer surface 5a of each protrusion 5 (the top of the protrusion 5 as shown in FIG. 5). It is set to be 50% or less with respect to the area of the peripheral surface defined by the rotation locus 9 of the outer surface 5a.
- the number of protrusions is preferably 100 or more.
- the top outer surface 5a of the protrusion 5 is an internal exposed surface from which the internal structure of the protrusion 5 is exposed.
- the opening ratio of the top outer surface 5a is 50% or more, more preferably 60% or more.
- the outer peripheral surface 3 a of the roll body 3 and the outer peripheral surface 5 b of the protrusion 5 are covered with the skin layer 4 having a lower porosity than the internal structure of the roll body 3 and the protrusion 5.
- the opening ratio of the surface of the skin layer 4 is lower than the opening ratio of the top outer surface 5a of the protrusion 5, for example, 20% or less.
- the opening ratio of the top outer surface 5a is calculated by (total area of all pores open on the top outer surface 5a / area of the predetermined range of the top outer surface 5a) ⁇ 100 within a predetermined range of the top outer surface 5a.
- the aperture ratio of the outer peripheral surfaces 3a and 5b is within the predetermined range of the outer peripheral surfaces 3a and 5b (total area of all pores opened in the outer peripheral surfaces 3a and 5b / outer peripheral surface 3a, This is a value calculated by (area of a predetermined range of 5b) ⁇ 100.
- Each aperture ratio can be determined by, for example, the following measurement method.
- the surface of the sponge roller 1 (top outer surface 5a, outer peripheral surfaces 3a, 5b) is photographed with an electron microscope (magnification: 100 times), and the photographed image is magnified twice (total 200 times).
- a transparent sheet partitioned into a predetermined number of squares (5 mm square) by a plurality of vertical and horizontal boundary lines is placed on the photograph taken at 200 times magnification.
- the photograph is visually observed on the transparent sheet, and in each cell, it is determined whether the area of the opening part (pore part) occupies half or more of the entire area, and the area of the opening part is half of the entire area.
- the cells that occupy the above are regarded as opening regions, and the number of cells is counted.
- (number of cells regarded as an opening area / total number of cells) ⁇ 100 is calculated as the aperture ratio.
- a sponge roller 1 made of a PVAt porous material is prepared by mixing one or more polyvinyl alcohols (raw materials) having an average degree of polymerization of 500 to 3000 and a saponification degree of 80% or more to form an aqueous solution.
- Mineral acids as catalysts, starch and the like as pore forming materials are added, and a mixed solution thereof is injected into a predetermined mold 21 as shown in FIGS. 7 and 8, and reacted at 40 to 80 ° C. After removing from 21, the pore-forming material is removed by washing with water.
- the mold 21 includes an outer mold 23, an inner mold 25, a bottom plate 27, a core rod 29, and a cap 31. Both the outer mold 23 and the inner mold 25 are formed in a cylindrical shape.
- the inner mold 25 has an outer diameter that is the same as or slightly smaller than the inner diameter of the outer mold 23, and is inserted into the outer mold 23.
- the core rod 29 is inserted approximately at the center of the inner mold 25.
- the bottom plate 27 closes the lower ends of the outer mold 23 and the inner mold 25 and supports the lower end of the core rod 29.
- the cap 31 is fitted to the inner peripheral surface at the upper end of the outer mold 23.
- the core rod 29 is positioned by the bottom plate 27 and the cap 31.
- a substantially cylindrical space 33 for forming the roll body 3 is defined between the inner peripheral surface of the inner mold 25 and the outer peripheral surface of the core rod 29.
- a plurality of through holes 35 for forming the protrusions 5 are formed in the inner mold 25, and each through hole 35 communicates with the space 33.
- the mixed liquid is injected into the space 33 from the casting nozzle 43 inserted between the outer mold 23 and the cap 31 and flows into the through holes 35 from the space 33.
- the air in the through hole 35 moves to the space 33 and is released from the upper end of the space 33 to the atmosphere. Thereby, the liquid mixture is reliably filled up to the end of the through hole 35.
- a film-like structure having an opening is present on the outer surface (contact surface with the mold 21) of the sponge roller 1 after being taken out from the mold 21.
- the skin layer 4 has a lower porosity and a smaller average pore diameter than the internal structure of the sponge roller 1. Further, the surface of the skin layer 4 has a lower opening ratio and a smaller average opening diameter than the internal exposed surface where the internal tissue of the sponge roller 1 is exposed.
- a rotation support shaft (not shown) is inserted into the inner diameter portion of the roll body 3, and the sponge roller 1 is fixedly supported on the rotation support shaft, While rotating the rotating spindle to rotate the sponge roller 1, the cutting tool is pressed against the skin layer 4 covering the top outer surface 5a of the protrusion 5 to remove the skin layer 4 on the top outer surface 5a.
- the internal structure of the sponge roller 1 protrusion 5
- the opening ratio becomes 50% or more.
- the average opening diameter of the top outer surface 5 a is larger than the average opening diameter of the outer surface of the skin layer 4.
- the aperture ratio is maintained lower than the aperture ratio of the top outer surface 5a, and the pores The average opening diameter is also kept smaller than the average opening diameter of the top outer surface 5a.
- the top part outer surface 5a becomes the said curved surface shape by giving the said post-processing.
- the post-processing may be performed with the sponge roller 1 in either a wet state or a dry state.
- FIG. 9 is an electron micrograph of the outer peripheral surface 3a covered with the skin layer 4
- FIG. 10 is an electron micrograph of the top outer surface 5a from which the skin layer 4 has been removed. Comparing the two, it can be seen that the PVAt-based material region (white or gray region) defining the pores (openings) is significantly wider on the outer peripheral surface 3a (FIG. 9) than on the top outer surface 5a (FIG. 10). . That is, it can be seen that the top outer surface 5a has a significantly higher aperture ratio and a larger average aperture diameter than the outer peripheral surface 3a.
- the internal structure of the sponge roller 1 is exposed on the top outer surface 5a by the post-processing, but instead of the post-processing, for example, an outer mold that forms the top outer surface 5a when the sponge roller 1 is formed.
- the material of the outer mold 23 is selected, or the inner peripheral surface of the outer mold 23 is subjected to surface treatment so that the inner peripheral surface of the outer mold 23 has a characteristic that the material of the outer mold 23 itself is difficult to form the skin layer 4. May be.
- the internal tissue is exposed only by the top outer surface 5 a of the protrusion 5, but the internal tissue may be exposed also by the outer peripheral surface 5 b of the protrusion 5 and the outer peripheral surface 3 a of the roll body 3.
- the entire top outer surface 5a of the protrusion 5 is an internally exposed surface, but the present invention is not limited to this.
- the top of the protrusion 5 is partially cut obliquely from the middle position of the top surface 5 a of the protrusion 5 downward in the forward direction of rotation (in the direction of arrow 7). It is only necessary to provide an internally exposed surface on the top of the projection 5 such as forming an inclined surface 5c.
- the 30% compressive stress (physical property value) of the sponge roller 1 in a proper water-containing state is preferably 2 kPa or more and 20 kPa or less.
- the proper water content refers to a water content in which the PVAt porous material can exert an appropriate elasticity, and the water content (weight% of the water content relative to the dry state) is obtained in the range of about 100% to 1500%.
- the 30% compressive stress means that the PVAT-based porous material with proper water content is cut so that the distance between both end faces (height in the longitudinal direction) is 30 mm, and a load is applied to the entire end face. It is set to a type load measuring instrument, and the load when it is crushed by 30% (9 mm) in the longitudinal direction is measured and obtained as a value obtained by dividing the load by the area of the end face.
- the PVAt porous material those having a porosity of the internal structure of 80% to 95% and an average pore diameter of 50 ⁇ m to 200 ⁇ m are preferable.
- the porosity is less than 80%, the flexibility when wet is insufficient, and if the porosity is more than 95%, the practical strength is poor and none is suitable for cleaning applications. Further, if the average pore diameter is smaller than 50 ⁇ m, the elasticity at the time of wetting is insufficient and a sufficient brushing effect cannot be obtained, and if it exceeds 200 ⁇ m, the eyes are too coarse to be suitable for precision cleaning.
- the porosity is measured with a dry automatic dense watch on a dry rectangular parallelepiped PVAt sufficiently dried by a dryer, and from the apparent volume and true volume of the rectangular parallelepiped, the following equation (1) This is a calculated value.
- the average pore diameter is an average value of the diameters of a plurality of pores existing in the internal structure of the PVAt porous material.
- the average value of the long diameters (distances in the longitudinal direction of each pore) of a predetermined number of pores extracted from a plurality of pores on a predetermined basis is defined as the average pore diameter, and is obtained, for example, by the following measurement method Can do.
- the sponge roller 1 is cut at a predetermined position, and the internal tissue exposed on the cut surface is photographed with an electron microscope. Next, a predetermined measurement range is set in the photographed photograph, and 20 pores are extracted in descending order of the longest diameter from a plurality of pores existing in the measurement range. Next, each major axis of the 20 extracted pores is measured. Finally, the average of the 11th to 20th measurement values counted from the larger of the 20 measurement values is calculated as the average pore diameter.
- the largest diameter is in descending order from a plurality of openings existing within a predetermined measurement range of the photographed photograph (see FIGS. 9 and 10). Twenty openings are extracted, the major diameters of the extracted twenty openings are measured, and the average of the eleventh to twentieth measurement values counted from the larger of the 20 measurement values is defined as the average opening diameter. What is necessary is just to calculate.
- PVAt porous material those having an apparent density of 0.06 g / cm 3 or more and a water retention of 600% or more are suitable.
- the apparent density is calculated by measuring the dry weight of the PVAt porous material of a predetermined shape (for example, rectangular shape) and the external dimensions under proper water content, and calculating the volume (wet volume) from the external dimensions. And obtained by dividing the dry weight by the wet volume.
- the water retention rate is a value calculated by the following equation (2) by measuring the dry weight of the PVAt porous material (dry weight) and the weight sufficiently wet (wet weight). is there.
- Water retention rate (%) (wet weight-dry weight) / dry weight x 100 ... (2)
- the top outer surface 5a of the protrusion 5 is an internal exposed surface in which the internal structure of the protrusion 5 having a higher porosity (opening ratio) than the skin layer 4 is exposed.
- the outer surface 5a contacts the surface to be cleaned 10a during cleaning. For this reason, when the sponge roller 1 is used for the first time, the sponge roller 1 itself (particularly the region of the outer surface of the protrusion 5 that contacts the surface to be cleaned 10a) is improved against the dummy surface to be cleaned.
- the time for scrub cleaning start-up time / break-in time
- the opening ratio of the top outer surface 5a is relatively high, even when a particle having a smaller particle diameter than the opening of the top outer surface 5a enters the protrusion 5 from the opening of the top outer surface 5a, the particle It is difficult to be captured inside the protrusion 5 and the life cycle of the product can be improved.
- the opening ratio is relatively high, and the existence ratio (area ratio) of the material (polyvinyl acetal porous material) of the sponge roller 1 is low. For this reason, it is difficult to capture particles having a relatively large particle size during cleaning, and it is possible to prevent the surface to be cleaned 10a from being damaged by the captured particles.
- the cleaning liquid traveling from the inner side to the outer side of the sponge roller 1 is removed from the outer peripheral surface 3 a of the roll body 3. And it flows out more easily from the top outer surface 5a of the protrusion 5 than the outer peripheral surface 5b of the protrusion 5. For this reason, it is possible to further reduce the break-in time, improve the life cycle of the product, and suppress the application of damage to the surface to be cleaned.
- top outer surface 5a is inclined toward the outer peripheral surface 3a of the roll body 3 on the front side in the rotation direction of the protrusion 5, the top outer surface 5a is likely to come into contact with the surface to be cleaned 10a during scrub cleaning. For this reason, it is possible to further reduce the break-in time, improve the life cycle of the product, and suppress the application of damage to the surface to be cleaned.
- this invention is not limited to the above-mentioned embodiment described as an example, and its modification, In the range which does not deviate from the technical idea which concerns on this invention even if it is other than the above-mentioned embodiment etc. If so, various changes can be made according to the design and the like.
- the cleaning sponge roller of the present invention is suitably used mainly for scrub cleaning in the cleaning process of the manufacturing process of electronic components.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Cleaning Or Drying Semiconductors (AREA)
- Cleaning In General (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
Abstract
Description
Claims (6)
- 湿潤状態で弾性を有するポリビニルアセタール系多孔質素材によって構成され、略円筒形状のロール体と該ロール体の外周面上に一体形成された複数の突起とを有し、該突起を被洗浄面に回転接触させて該被洗浄面を洗浄する洗浄用スポンジローラであって、
前記突起の外面は、該突起の内部組織が露出した状態で洗浄時に前記被洗浄面と接触する内部露出面を有する
ことを特徴とする洗浄用スポンジローラ。 - 請求項1に記載の洗浄用スポンジローラであって、
前記内部露出面の開口率は、50%以上である
ことを特徴とする洗浄用スポンジローラ。 - 請求項1又は請求項2に記載の洗浄用スポンジローラであって、
前記ロール体の外周面は、前記内部露出面よりも開口率が低い表皮層で覆われている
ことを特徴とする洗浄用スポンジローラ。 - 請求項1~請求項3の何れか1項に記載の洗浄用スポンジローラであって、
前記突起の外周面は、前記内部露出面よりも開口率が低い表皮層で覆われている
ことを特徴とする洗浄用スポンジローラ。 - 請求項1~請求項4の何れか1項に記載の洗浄用スポンジローラであって、
前記突起の回転方向の前側では、前記内部露出面が前記ロール体の外周面に向かって傾斜している
ことを特徴とする洗浄用スポンジローラ。 - 請求項1~請求項5の何れか1項に記載の洗浄用スポンジローラであって、
前記内部露出面は、前記突起の頂部外面である
ことを特徴とする洗浄用スポンジローラ。
Priority Applications (2)
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---|---|---|---|
JP2010519001A JP5155394B2 (ja) | 2008-06-30 | 2009-06-22 | 洗浄用スポンジローラ |
US13/000,806 US8555458B2 (en) | 2008-06-30 | 2009-06-22 | Cleaning sponge roller |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2008-171212 | 2008-06-30 | ||
JP2008171212 | 2008-06-30 |
Publications (1)
Publication Number | Publication Date |
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WO2010001761A1 true WO2010001761A1 (ja) | 2010-01-07 |
Family
ID=41465861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/061347 WO2010001761A1 (ja) | 2008-06-30 | 2009-06-22 | 洗浄用スポンジローラ |
Country Status (5)
Country | Link |
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US (1) | US8555458B2 (ja) |
JP (1) | JP5155394B2 (ja) |
KR (1) | KR101579572B1 (ja) |
TW (1) | TWI442981B (ja) |
WO (1) | WO2010001761A1 (ja) |
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JP2022031560A (ja) * | 2020-10-15 | 2022-02-18 | 株式会社荏原製作所 | 基板洗浄装置および基板洗浄方法ならびに基板洗浄装置用のロールスポンジ |
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Also Published As
Publication number | Publication date |
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US20110265279A1 (en) | 2011-11-03 |
US8555458B2 (en) | 2013-10-15 |
JPWO2010001761A1 (ja) | 2011-12-15 |
KR20110044208A (ko) | 2011-04-28 |
KR101579572B1 (ko) | 2015-12-22 |
TWI442981B (zh) | 2014-07-01 |
JP5155394B2 (ja) | 2013-03-06 |
TW201000223A (en) | 2010-01-01 |
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