US20100252671A1 - Conductive reel - Google Patents

Conductive reel Download PDF

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Publication number
US20100252671A1
US20100252671A1 US12/734,514 US73451408A US2010252671A1 US 20100252671 A1 US20100252671 A1 US 20100252671A1 US 73451408 A US73451408 A US 73451408A US 2010252671 A1 US2010252671 A1 US 2010252671A1
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United States
Prior art keywords
reel
core portion
attaching portion
set forth
attaching
Prior art date
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Abandoned
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US12/734,514
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English (en)
Inventor
Satoru Kudose
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Sharp Corp
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Individual
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Assigned to SHARP KABUSHIKI KAISHA reassignment SHARP KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KUDOSE, SATORU
Publication of US20100252671A1 publication Critical patent/US20100252671A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/04—Kinds or types
    • B65H75/08—Kinds or types of circular or polygonal cross-section
    • B65H75/14—Kinds or types of circular or polygonal cross-section with two end flanges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/50—Diminishing, minimizing or reducing
    • B65H2601/52—Diminishing, minimizing or reducing entities relating to handling machine
    • B65H2601/522—Wear of friction surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/37—Tapes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/50—Storage means for webs, tapes, or filamentary material
    • B65H2701/51—Cores or reels characterised by the material
    • B65H2701/515—Cores or reels characterised by the material assembled from parts made of different materials
    • B65H2701/5152—End flanges and barrel of different material
    • B65H2701/51528—Plastic barrel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
    • H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L24/50—Tape automated bonding [TAB] connectors, i.e. film carriers; Manufacturing methods related thereto
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
    • H01L24/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
    • H01L24/86—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using tape automated bonding [TAB]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01—Chemical elements
    • H01L2924/01012—Magnesium [Mg]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01—Chemical elements
    • H01L2924/01055—Cesium [Cs]

Definitions

  • the present invention relates to a conductive reel which suppresses dust generation from a portion thereof where the dust generation is more likely to occur when the portion rubs against a shaft.
  • a long semiconductor-mounting circuit tape such as a TAB (Tape Automated Bonding) tape or a COF (Chip on Film) tape, which is a film-mounting semiconductor device, is often wound on a reel.
  • TAB Transmission Automated Bonding
  • COF Chip on Film
  • the reel with the semiconductor-mounting circuit tape wound thereon is attached to a shaft, and the shaft is then rotated so that the tape is sequentially unreeled.
  • the semiconductor-mounting circuit tape being wound on the reel is packed and transported.
  • an empty reel is collected.
  • the reel collected after subjected to use is washed in a cleaning process before reused.
  • the cleaning process the reel is soaked in a cleaning solution, and subjected to ultrasonic cleaning, and then dried by an air blower.
  • a conventional reel had a core portion with a shaft hole into which the shaft was fitted, wherein the core portion had such a shape that it is sealed off with a cavity formed inside. This gave rise to the following problem. That is, in the cleaning process, the solution stayed in the core portion, and the reel was therefore poorly dried.
  • Patent Literature 1 discloses a tape reel having a skeletal core portion.
  • FIG. 14 shows a schematic shape of a tape reel 500 disclosed in Patent Literature 1.
  • a core portion 501 of the tape reel 500 has a skeletal shape in which finger hook portions 502 for holding the tape reel 500 with fingers inserted therein are formed.
  • the core portion 501 arranged as such contributes to rise in efficiency of cleaning and drying in the cleaning process and improvement in reusability.
  • the tape reel 500 disclosed in Patent Literature 1 but also another conventional reel is made from plastic material such as polystyrene (PS) and acrylonitrile butadiene styrene (ABS) from the viewpoints of cost and workability in molding the reel. Further, since the reel is used with the semiconductor-mounting circuit tape wound thereon, the reel should not be charged for product protection. Hence, carbon is mixed in the plastic material. The use of the carbon suitably provides conductivity to the reel, and enhances workability in molding the reel and stability of the reel quality.
  • plastic material such as polystyrene (PS) and acrylonitrile butadiene styrene (ABS) from the viewpoints of cost and workability in molding the reel.
  • PS polystyrene
  • ABS acrylonitrile butadiene styrene
  • the conventional reels had the following problem. That is, at the insertion and removal of a shaft, dust is generated from a portion of the reel contacted with the shaft when such a portion is rubbed against the shaft.
  • the plastic material used for the conventional reels are more likely to generate shavings.
  • Such generated foreign dust contains carbon whose resistance ranges approximately from 10 3 ⁇ to 10 4 ⁇ . Therefore, when the foreign dust is deposited onto a wiring of a wound semiconductor-mounting circuit tape, leakage occurs with greatly high possibility.
  • the present invention has been made in view of the problem, and an object of the present invention is to provide a conductive reel which can suppress dust generation from a portion thereof where the dust generation is more likely to occur.
  • a conductive reel of the present invention to attain the object, comprises: a first attaching portion having a first shaft hole; a cylindrical-shaped core portion where the first attaching portion is held on an inner periphery side thereof; and two disc-shaped flange portions each being formed radially with respect to an axis of the core portion so as to extend from an edge of the core portion, wherein a material for the first attaching portion, which is different from materials for the core portion and the flange portions, has an abrasion loss of not greater than 15 mg by 1000-cycle Taber abrasion test (load: 1 kgf, abrasion ring: CS-17).
  • the reel of the present embodiment is such that the first attaching portion, which has the first shaft hole where the shaft is inserted and removed, is made from the material of which abrasion loss is not greater than 15 mg by 1000-cycle Taber abrasion test.
  • the material has a property of being less prone to dust generation. Therefore, the shavings are less likely to occur at the insertion and removal of the shaft. This makes it possible to prevent dust generation from a portion thereof where the dust generation is more likely to occur when the portion rubs against the shaft.
  • the conductive reel of the present invention such that the material for the first attaching portion is made from a polyacetal resin.
  • the abrasion loss of the polyacetal resin by 1000-cycle Taber abrasion test is 13 mg.
  • the polyacetal resin is also superior in moldability.
  • the conductive reel of the present invention it is preferable to arrange the conductive reel of the present invention such that materials for the first attaching portion, the core portion, and the flange portions have each a polymeric material mixed therein, and surface resistance of each of the first attaching portion, the core portion, and the flange portions is set in the range from 10 7 ⁇ to 10 10 ⁇ . This prevents occurrence of leakage, even if the generated foreign dust is deposited onto the wiring of the TAB tape.
  • the TAB tape on which the semiconductor chip is mounted having a larger width in the longitudinal direction of the TAB tape can be wound with little warpage, thus preventing the occurrence of the resin crack at the edge of the semiconductor chip. Also, it is possible to reduce usage of the embossed tape, which realizes superiority in cost.
  • the core portion comprises: an outwardly cylindrical portion that is in a shape of a hollow cylinder and forms an outward shape of the outwardly cylindrical portion; a tubular attaching portion, provided on an inner periphery side of the outwardly cylindrical portion, holding the first attaching portion inserted thereinto so that the first shaft hole of the first attaching portion substantially matches an axis of the outwardly cylindrical portion; and a plurality of ribs connecting between the outwardly cylindrical portion and the tubular attaching portion.
  • the core portion has a skeletal structure in which inner space is divided along an axial direction. This makes it possible to improve cleaning and drying properties in the cleaning process for reuse of the reel.
  • the conductive reel of the present invention further comprises a second attaching portion, provided so as to be inserted into and removed from the first shaft hole of the first attaching portion, having a second shaft hole whose diameter is smaller than that of the first shaft hole.
  • the reel it is possible to attach the reel to a shaft having a diameter smaller than that of the first shaft hole, by placement of the second attaching portion that matches the shaft shape into the first shaft hole of the first attaching portion.
  • the use of the second attaching portion makes it possible to accommodate various shafts, which enables the reel to be used in accordance with an environment where a user uses the reel. Further, the second attaching portion is attachable and detachable. Therefore, it does not take much time to attach and detach the second attaching portion.
  • a material for the second attaching portion has a polymeric material mixed therein, and surface resistance of the second attaching portion is set in the range from 10 7 ⁇ to 10 10 ⁇ . This prevents the occurrence of leakage, even if the generated foreign dust is deposited onto the wiring of the TAB tape.
  • the conductive reel of the present invention such that the first shaft hole of the first attaching portion has a plurality of key grooves formed therein. This allows the shaft to be inserted easily, in a case that a rib for positioning is provided on an outer periphery surface of the shaft. If the shaft hole has only one key groove, stress concentration at the rotation of the reel is likely to occur on the one key groove, thereby causing breakage of the reel. However, provision of the plurality of key grooves allows the stress of the reel rotation to be scattered without concentrating on a single groove, thereby preventing the breakage of the reel.
  • the conductive reel of the present invention it is preferable to arrange the conductive reel of the present invention such that on an outer periphery surface of the core portion, at least one slit is formed so that a length of the slit extends along an axial direction of the core portion.
  • a width of the slit ranges from 2 mm to 6 mm, so that the TAB tape and the embossed tape can be inserted into the slit and fixed therein.
  • the width corresponds to a total thickness of the TAB tape and the embossed tape.
  • each of the flange portions have a plurality of openings that are provided symmetrically to extend in the axial direction of the core portion, the flange portion has a strength of not lower than 2.7 N, and a total area of the plurality of openings accounts for 25% to 30% of an area of an outer surface of the flange portion which surface is perpendicular to the axial direction of the core portion.
  • the flange portion had wide open areas, which reduced the strength of the flange portion and therefore easily caused warpage.
  • the warpage caused misalignment in winding the TAB tape.
  • the openings are provided. This makes it possible to secure working areas (for example, an action of putting hands in the areas) in attaching and detaching the TAB tape to/from the core portion and to make the warpage even while ensuring the strength of the flange portion.
  • each of the openings has an area of not smaller than 8000 mm 2 .
  • the conductive reel of the present invention it is preferable to arrange the conductive reel of the present invention such that the first attaching portion, the core portion, and the flange portions are gray in color. This enables dirt not to be made noticeable, thereby preventing an excessive testing. This makes it possible to increase frequency of reuse of the reel as much as possible.
  • the conductive reel of the present invention comprises: the first attaching portion having the first shaft hole; the cylindrical-shaped core portion where the first attaching portion is held on an inner periphery side thereof; and the two disc-shaped flange portions each being formed radially with respect to the axis of the core portion so as to extend from the edge of the core portion, wherein the material for the first attaching portion, which is different from the materials for the core portion and the flange portions, has an abrasion loss of not greater than 15 mg by 1000-cycle Taber abrasion test (load: 1 kgf, abrasion ring: CS-17).
  • the first attaching portion which has the first shaft hole where the shaft is inserted and removed, is made from the material of which abrasion loss is not greater than 15 mg by 1000-cycle Taber abrasion test.
  • This material has a property of being less prone to dust generation. Therefore, the shavings are less likely to occur at the insertion and removal of the shaft. This realizes the conductive reel which can suppress dust generation from a portion thereof where the dust generation is more likely to occur when the portion rubs against the shaft.
  • FIG. 1 is an elevation view showing an embodiment of a conductive reel of the present invention.
  • FIG. 2 is a side view showing an embodiment of the conductive reel.
  • FIG. 3 is an elevation view showing a structure of an adapter of the conductive reel.
  • FIG. 4 is an elevation view photographically showing a structure of a core portion of the conductive reel.
  • FIG. 5 is an explanatory schematic view showing winding of a TAB tape around a core portion of a reel.
  • FIG. 6 is an explanatory schematic view showing winding of another TAB tape around a core portion of a reel.
  • FIG. 7 is an elevation view showing another structure of a core portion of the conductive reel.
  • FIG. 8 is an elevation view showing another structure of a flange portion of the conductive reel.
  • FIG. 9 is an elevation view showing the conductive reel to which a shipping label is affixed.
  • FIG. 10 is a plane view photographically showing a structure of an inner core member of the conductive reel.
  • FIG. 11 shows a manufacturing process of the conductive reel of the present invention.
  • FIG. 12 is a table showing critical widths of a semiconductor chip, relative to a combination of (i) a diameter of a core portion of the conductive reel and (ii) a thickness of a tape to be wound.
  • FIG. 13 is a graph showing a relationship between the diameter of the core portion of the reel and the critical widths of the semiconductor chip.
  • FIG. 14 is a perspective view showing a structure of the conventional reel.
  • FIG. 15 is an elevation view showing the core portion shown in FIG. 4 .
  • FIG. 16 is a side view showing the core portion show in FIG. 4 .
  • FIG. 1 is an elevation view showing an exemplary structure of a reel 100 of the present embodiment.
  • FIG. 2 is a side view showing an exemplary structure of the reel 100 of the present embodiment.
  • the reel 100 of the present embodiment which allows a TAB tape including a film-mounting semiconductor chip to be wound thereon, is a conductive reel having conductivity for protection of the wound TAB tape.
  • the reel 100 comprises: an adapter 101 (first attaching portion) having a shaft hole 104 (first shaft hole) for inserting and removing a shaft; a core portion 102 where the adapter 101 is held on an inner periphery side thereof and TAB tape is wound around an outer periphery surface thereof; and two flange portions 103 each formed radially with respect to an axis of the core portion 102 so as to extend from an edge (rim) of the core portion 102 .
  • FIG. 3 is a view showing an exemplary structure of the adapter 101 .
  • the adapter 101 is made from a polyacetal (POM) resin.
  • the polyacetal resin has a low friction coefficient (0.35 or lower), great abrasion resistance and moldability, and characteristics (property) of generating a low amount of dust.
  • the adapter 101 may be made from a material having abrasion loss of not greater than 15 mg by 1000-cycle Taber abrasion test (load: 1 kgf, ring: CS-17), as a material having characteristics (property) of being less prone to dust generation.
  • the abrasion loss by the Taber abrasion test is 22 mg for ABS resin and 13 mg for the polyacetal resin.
  • the adapter 101 has a polymeric material mixed therein, and surface resistance (conductivity) of the adapter 101 is adjusted (set) in the range from 10 7 ⁇ to 10 10 ⁇ , preferably from 10 8 ⁇ to 10 9 ⁇ for prevention of electrostatic buildup. This prevents leakage caused by the depositing of generated foreign dust on the TAB tape.
  • the adapter 101 is at least provided with: the shaft hole 104 that conforms to a shaft diameter; and four key grooves 105 formed in the shaft hole 104 .
  • Other internal shape of the adapter 101 is not particularly limited as long as the shape provides excellent moldability.
  • the shaft a 1-inch shaft is generally used. Accordingly, the shaft hole 104 is formed having such a diameter that matches the diameter of the shaft. Further, the shaft has one positioning rib formed on an outer periphery surface thereof.
  • FIG. 4 shows a photographic image of an exemplary structure of a core portion 102 .
  • FIG. 15 is an elevation view of the core portion 102 shown in FIG. 4 .
  • FIG. 16 is a side view of the core portion 102 shown in FIG. 4 .
  • the core portion 102 is made from a PS resin, ABS resin, or any other resin used generally. This secures workability in molding, and also suppresses increase in cost.
  • the material for the core portion 102 may be made from polycarbonate (PC) resin, polybutylene terephthalate (PBT) resin, polypropylene (PP) resin, or the like resin.
  • the core portion 102 has a polymeric material mixed therein, and surface resistance of the core portion 102 is adjusted in the range from 10 7 ⁇ to 10 10 ⁇ , preferably from 10 8 ⁇ to 10 9 ⁇ for prevention of electrostatic buildup. This prevents leakage caused by the depositing of generated foreign dust on the TAB tape.
  • TOYOLAC Parel manufactured by TORAY Industries, Inc.
  • the TOYOLAC Parel is an alloy made from an ABS resin and an antistatic polymer.
  • the antistatic polymer is made from polyetheresteramide resin (nylon 6-polyethyleneglycol copolymer). The antistatic polymer is dispersed in streaks so as to form successive layers. This effectively creates a leak path for electric charges and provides conductivity to the core portion 102 .
  • the core portion 102 is cylindrical in appearance, and the TAB tape is wound around an outer periphery surface of the core portion 102 .
  • the core portion 102 has a diameter in the range from 105 mm to 130 mm.
  • the use of the core portion 102 having the smallest diameter in such a diameter range will cause damage to a semiconductor chip in winding the TAB tape around the core portion.
  • the use of the core portion 102 having the largest diameter in such diameter range reduces a winding amount of the TAB tape, but decreases the possibility of damaging the semiconductor chip in winding the TAB tape around the core portion.
  • the use of the core portion 102 having a diameter of greater than 130 mm is not preferable because it reduces the winding amount of the TAB tape, thereby causing poor productivity.
  • the diameter of the core portion 102 was 105 mm.
  • a TAB tape 200 on which a semiconductor chip 201 is mounted having a narrower width in a longitudinal direction of the TAB tape 200 can be wound without any problem in quality even if the diameter of the core portion 102 is small (105 mm).
  • a TAB tape 210 on which a semiconductor chip 211 is mounted having a larger width in a longitudinal direction of the TAB tape 210 is wound, if the diameter of the core portion 102 is small (105 mm), with a great warpage that easily causes a resin crack at the edge of the semiconductor chip 211 .
  • this will damage a product.
  • the diameter of the core portion 102 ranges from 120 mm to 130 mm, which enables the critical value of the width of the semiconductor chip in the longitudinal direction of the TAB tape which width does not damage the product to range from 12.1 mm to 13.4 mm (It should be noted that the thickness of the semiconductor chip is 0.63 mm, and the height thereof, which is the total thickness including the thickness of the emboss portion, is 1.1 mm). This prevents the warpage of the TAB tape 210 , on which the semiconductor chip 211 is mounted having a large width in the longitudinal direction of the TAB tape 210 as shown in FIG. 6 , and suppresses the occurrence of the resin crack at the edge of the semiconductor chip 211 .
  • the tape can be wound without any problem. Further, this can decrease in usage of the embossed tape, thereby realizing superiority in cost. Besides, this can avoid curling of the TAB tape.
  • the diameter of the core portion 102 may be determined in the range from 120 mm to 130 mm according to design variations.
  • the core portion 102 has a skeletal structure (hollow structure) in which an adapter attaching portion 106 (tubular attaching portion) where the adapter 101 is fitted and attached (inserted and held) is provided on the inner periphery side of the core portion 102 , and a plurality of ribs 107 are provided so as to hold the adapter attaching portion 106 and connect between a cylindrical portion (outwardly cylindrical portion) forming the outer periphery surface of the core portion 102 and the adapter attaching portion 106 .
  • an adapter attaching portion 106 tubular attaching portion
  • a plurality of ribs 107 are provided so as to hold the adapter attaching portion 106 and connect between a cylindrical portion (outwardly cylindrical portion) forming the outer periphery surface of the core portion 102 and the adapter attaching portion 106 .
  • the adapter attaching portion 106 is formed in the shape of a tube that extends in the axial direction of the core portion 102 , and is provided at such a position that an axis of the shaft hole 104 of the adapter 101 substantially agrees with the axis of the core portion 102 in attaching the adapter 101 to the adapter attaching portion 106 .
  • the ribs 107 have a structure with such strength that the ribs do not break when the reel 100 is rotated while the shaft is inserted into the adapter 101 attached to the adapter attaching portion
  • the skeletal structure of the core portion 102 allows reduction in usage of the resin. Further, the core portion 102 has such a shape and structure that liquid does not stay, which increase efficiency of cleaning with a solution, warm water and an air blower. This makes it possible to improve cleaning and drying properties in a cleaning process (process for removal of foreign materials) for reuse of the reel.
  • a shape of the ribs 107 is not limited to the shape (structure) shown in FIG. 4 as long as the ribs 107 have the above-specified strength.
  • ribs 109 as shown in FIG. 7 may be adopted.
  • the ribs 109 are formed in the shape of a cross when seen along the axial direction of the core portion 102 . Further, if the reduction of usage of the resin and improvement of the cleaning and drying properties are not needed, the ribs may have such a shape that the core portion 102 is sealed off as long as the ribs have the above-specified strength.
  • slits 108 are provided on the outer periphery surface of the core portion 102 in such a manner that the length of each of the slits 108 extends along the axial direction of the core portion 102 .
  • the TAB tape and the embossed tape are inserted and fixed into the slits 108 before started to be wound. This enables the TAB tape and the embossed tape to be easily wound around the core portion 102 .
  • a width of the slits 108 ranges from 2.0 mm to 6.0 mm. The width is determined so that the TAB tape and the embossed tape are fixed in the slits 108 by a total thickness of the two tapes when inserted into the silts 108 .
  • the flange portions 103 and the core portion 102 are molded into one piece. For this reason, the material for the flange portions 103 is the same as that for the core portion 102 . Therefore, surface resistance of the flange portions 103 is also adjusted in the range from 10 7 ⁇ to 10 10 ⁇ , preferably from 10 8 ⁇ to 10 9 ⁇ for prevention of electrostatic buildup. This prevents leakage caused by the depositing of generated foreign dust on the TAB tape.
  • each of the flange portions 103 is in the shape of a disc outwardly, wherein four windows 110 (openings) are provide.
  • the four windows 110 are provided symmetrically in four areas out of six separate areas of an outer surface of the flange portion 103 perpendicular to the axial direction of the core portion.
  • the windows 110 are openings which function as working areas (for example, an action of putting hands in the areas) in winding the TAB tape around the core portion 102 . Therefore, it is desirable that the areas are wide from the viewpoint of material cost as well. Conventionally, the flange portion had wide open areas, which reduced the strength of the flange portion and therefore easily caused warpage. Unfortunately, the warpage caused misalignment in winding the TAB tape.
  • the four windows 110 are provided symmetrically, the strength of the flange portion 103 is 2.7 N or more, and the total surface area of the four windows 110 accounts for 25% to 30% of an area of the outer surface of the flange portion 103 perpendicular to the axial direction, in order to secure the working areas, to maintain the strength of the flange portion 103 , and to make the warpage of the flange portion 103 even. It is not preferable that the total surface area of the windows 110 is less than 25% of the area of the outer surface of the flange portion 103 . This is because it increases the usage of the resin and therefore causes rise in cost.
  • the total surface area of the windows 110 is more than 30% of the area of the outer surface of the flange portion 103 . This is because it cannot secure the strength of the flange portion 103 .
  • the area of each of the windows 110 is preferably not smaller than 8000 mm 2 so that the working areas are sufficiently secured. Furthermore, it is desirable that the flange portion 103 has areas (solid portion) where the windows 110 are not provided which areas are provided symmetrically, so that the warpage falls within 1.5 mm.
  • the shape and number of the windows 110 are not limited to those shown in FIG. 1 .
  • the windows 111 and 112 of shapes as shown in FIG. 8 may be adopted.
  • a shipping label 150 (for example, 50 mm ⁇ 100 mm) indicating information of a TAB tape is affixed to either of the flange portions 103 . Therefore, it is desirable that each of the flange portions 103 has an area, as the solid portion, where the shipping label 150 can be affixed.
  • the reel 100 of the present embodiment comprises: the adapter 101 having the shaft hole 104 for inserting and removing a shaft; the core portion 102 where the adapter 101 is held on the inner periphery side thereof and the TAB tape is wound around the outer periphery surface thereof; and the two flange portions 103 each being formed radially with respect to the axis of the core portion 102 so as to extend from the edge of the core portion 102 , wherein the adapter 101 is made from the polyacetal resin which is different from materials for the core portion 102 and the flange portions 103 .
  • the shaft in inserting and removing the shaft into/from the shaft hole, the shaft rubbed against the axial part, thereby easily generating shavings.
  • the shavings contain carbon whose resistance ranges approximately from 10 3 ⁇ to 10 4 ⁇ . Therefore, the depositing of the shavings onto the wiring of the wound TAB tape caused leakage with greatly high possibility.
  • the reel 100 of the present embodiment is such that the adapter 101 having the shaft hole 104 for inserting and removing the shaft is made from a polyacetal resin.
  • the polyacetal resin has characteristics (property) of being less prone to duct generation. Therefore, the shavings are less likely to occur at the insertion and removal of the shaft. Accordingly, it is possible to realize the reel 100 which can suppress dust generation from a portion thereof where the dust generation is more likely to occur when the portion rubs against the shaft.
  • the core portion 102 and the flange portions 103 may also be made from a polyacetal resin.
  • the polyacetal resin has a high shrinkage which ranges from 1.6% to 2.0% at the molding. Therefore, it is difficult to stably mold such a polyacetal resin into a large-size product, because deformation, asperity, and the like defects noticeably occur during the molding.
  • the reel 100 of the present embodiment has no problem in moldability because the polyacetal resin is used only for the adapter 101 which is small in size. Accordingly, it is possible to stably mold the core portion 102 and the flange portions 103 .
  • the shaft attached to the reel 100 is generally a 1-inch shaft; however, there are various shaft shapes. Therefore, in order to accommodate a shaft shape varying depending on an environment where a user uses the reel, a dedicated inner core member can be used.
  • FIG. 10 shows a photographic image of an exemplary structure of an inner core member 120 being fitted into the shaft hole 104 of the adapter 101 .
  • FIG. 17 is an elevation view of the inner core member 120 shown in FIG. 10 .
  • the inner core member 120 (second attaching portion) is used by fitting into the shaft hole 104 of the adapter 101 . Therefore, the inner core member 120 can be inserted into and removed from the shaft hole 104 of the adapter 101 .
  • an outer periphery surface of the inner core member 120 is tapered so that the inner core member 120 is fixed.
  • the inner core member 120 is made from a polyacetal resin.
  • the inner core member 120 has a polymeric material mixed therein, and surface resistance of the inner core member 120 is adjusted in the range from 10 7 ⁇ to 10 10 ⁇ , preferably form 10 8 ⁇ to 10 9 ⁇ , for prevention of electrostatic buildup. This prevents leakage caused by the depositing of generated foreign dust on the tape.
  • the inner core member 120 is at least provided with a shaft hole 121 (second attaching portion) that matches the shaft shape, and other internal shape of the inner core member 102 is not particularly limited as long as the shape of the inner surface provides excellent moldability.
  • the shaft hole 121 is formed in such a shape so as to allow a ⁇ 8 mm-shaft with double wings, a ⁇ 8 mm-short shaft with a single wing, or the like shaft to be fitted into.
  • the reel 100 it is possible to attach the reel 100 to a shaft having a diameter smaller than that of the shaft hole 104 of the adapter 101 , by placement of the inner core member 120 having the shaft hole 121 that matches the shaft shape into the shaft hole 104 of the adapter 101 .
  • the use of the inner core member 120 makes it possible to accommodate various shafts, which enables the reel to be used in accordance with an environment where the user uses the reel. Further, the inner core member 120 is attachable and detachable. Therefore, it does not take much time to attach and detach the inner core member 120 , thereby realizing improvement in workability.
  • the following components: the adapter 101 ; the core portion 102 ; the flange portions 103 ; and the inner core member 120 are preferably gray in color.
  • a natural color of a resin is generally white or milky-white. A direct use of such a resin without being colored enables cost reduction and ease of discovering dirt, thereby allowing the timing of replacement to be recognized easily and ensuring the quality of the reel.
  • the reel may be used in a process that goes under a greatly dirty environment, it would be impossible to reuse the reel.
  • the reel is colored gray to prevent the dirt from being made noticeable, for the purpose of preventing an excessive testing.
  • a pigment is mixed into a melted resin so as to increase a chromaticity at the molding stage.
  • the following describes a manufacturing process of the reel 100 of the present embodiment.
  • FIG. 11 shows the manufacturing process of the reel 100 .
  • the manufacturing process of the reel 100 of the present embodiment comprises the steps of: (i) forming a reel body including the core portion 102 and the flange portions 103 ; (ii) forming the adapter 101 and the inner core member 120 ; and (iii) attaching the adapter 101 to the adapter attaching portion 106 of the core portion 102 after the steps (i) and (ii).
  • resin chips are firstly prepared as materials for the core portion 102 and the flange portions 103 (S 11 ). Then, the resin chips are put into a mold and melted to mold the core portion 102 and the flange portions 103 into one piece (S 12 ). This forms the reel body including the core portion 102 and the flange portions 103 .
  • the molding may be double-port molding where the resin is supplied into the mold from two ports for molding. This makes it possible to improve productivity.
  • the core portion 102 and the flange portions 103 are not necessarily molded into one piece, but may be molded separately and then bonded to each other.
  • the resin chips are firstly prepared as materials for the adapter 101 and the inner core member 120 (S 21 ). Then, the resin chips are put into a mold and melted to mold the adapter 101 and the inner core member 120 (S 22 ). This forms the adapter 101 and the inner core member 120 .
  • the adapter 101 and the inner core member 120 are molded separately. Further, the molding may be the double-port molding.
  • the adapter 101 is attached to the adapter attaching portion 106 of the core portion 102 .
  • the reel 100 is completed.
  • the adapter 101 is attached thereto removably. This enables replacement of the adapter 101 only.
  • the inner core member 120 may be attached to the adapter 101 as appropriate, or the inner core member 120 may be enclosed with the reel 100 for the shipment.
  • the TAB tape had a film of 38+8 ⁇ m (46 ⁇ m) in thickness and the semiconductor chip of 0.63 mm in thickness.
  • the embossed tape had an embossed portion formed by an embossing process and a film of 0.125 mm in thickness.
  • the used embossed tapes were such that respective heights thereof were 1.1 mm and 1.2 mm wherein the height was a total thickness including a thickness of the embossed portion.
  • the used reels 100 were such that diameters of the core portion 102 ranged from 105 mm to 130 mm at intervals of 5 mm.
  • N is a core radius+a height which is a total thickness including a thickness of the embossed portion (m m), and M is a core radius+a thickness of the film of the embossed tape+a thickness of the semiconductor chip (mm))
  • FIG. 12 shows the results.
  • FIG. 13 is a graph based on the resulting data shown in FIG. 12 .
  • a product is damaged in an area where dots exist. Further, productivity decreases in a shaded area where the diameter of the core portion 102 exceeds 130 mm.
  • the present invention is not only suitably applied to a conductive reel which allows a TAB tape to be wound on and which is used by attachment to a shaft, but also broadly used in fields related to a manufacturing method of the conductive reel and manufacture of components used for the conductive reel.

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US12/734,514 2007-11-09 2008-10-29 Conductive reel Abandoned US20100252671A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2007292615A JP4633778B2 (ja) 2007-11-09 2007-11-09 樹脂材料を使用するｔａｂテープ用導電性リール
JP2007-292615 2007-11-09
PCT/JP2008/069647 WO2009060767A1 (fr) 2007-11-09 2008-10-29 Bobine conductrice

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US20100252671A1 true US20100252671A1 (en) 2010-10-07

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US (1) US20100252671A1 (fr)
JP (1) JP4633778B2 (fr)
KR (1) KR101131406B1 (fr)
CN (1) CN101855155B (fr)
TW (1) TWI364395B (fr)
WO (1) WO2009060767A1 (fr)

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CN104276453A (zh) * 2014-09-30 2015-01-14 无锡市新颖密封材料厂 一种四氟缠绕盘
CN107365451A (zh) * 2017-08-31 2017-11-21 东莞市胜跃实业发展有限公司 一种以pp塑料为主材的并用于收纳led灯条的卷盘及其制备方法
CN107459789A (zh) * 2017-08-31 2017-12-12 东莞市胜跃实业发展有限公司 一种以pet塑料为主材的高性能的led灯条卷盘及其生产工艺

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US3275257A (en) * 1965-03-01 1966-09-27 Bell & Howell Co Spindle adapter for super 8 supply reel
US3334402A (en) * 1963-08-16 1967-08-08 Angelo C Cuva Method of manufacturing tape reels
US3520486A (en) * 1967-10-03 1970-07-14 Eastman Kodak Co Reel for information bearing web material
US4629140A (en) * 1984-11-06 1986-12-16 Lacasse Steven B Film reel assembly
US5529399A (en) * 1993-10-28 1996-06-25 Renk Aktiengesellschaft Journal-thrust bearing assembly
US6543711B2 (en) * 2000-04-10 2003-04-08 Nitto Denko Corporation Damper continuous feeding body

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JPH08157146A (ja) * 1994-12-05 1996-06-18 Daishinku Co 電子部品用テーピングリール
JPH08310735A (ja) * 1995-05-19 1996-11-26 Sony Corp テープ巻取り構造
JP3644539B2 (ja) * 2001-03-22 2005-04-27 株式会社神戸製鋼所 スポーク型電子部品実装用フィルムキャリアテープ用リール
JP2004075385A (ja) * 2002-06-20 2004-03-11 Atect Corp テープリール
JP2005075536A (ja) * 2003-08-29 2005-03-24 Daiichi:Kk リール
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US1819707A (en) * 1929-04-10 1931-08-18 Taylor Shantz Company Construction and method of manufacturing reels
US3334402A (en) * 1963-08-16 1967-08-08 Angelo C Cuva Method of manufacturing tape reels
US3275257A (en) * 1965-03-01 1966-09-27 Bell & Howell Co Spindle adapter for super 8 supply reel
US3520486A (en) * 1967-10-03 1970-07-14 Eastman Kodak Co Reel for information bearing web material
US4629140A (en) * 1984-11-06 1986-12-16 Lacasse Steven B Film reel assembly
US5529399A (en) * 1993-10-28 1996-06-25 Renk Aktiengesellschaft Journal-thrust bearing assembly
US6543711B2 (en) * 2000-04-10 2003-04-08 Nitto Denko Corporation Damper continuous feeding body

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TW200942483A (en) 2009-10-16
KR101131406B1 (ko) 2012-04-03
WO2009060767A1 (fr) 2009-05-14
CN101855155B (zh) 2012-06-27
JP2009161256A (ja) 2009-07-23
KR20100066581A (ko) 2010-06-17
TWI364395B (en) 2012-05-21
JP4633778B2 (ja) 2011-02-16
CN101855155A (zh) 2010-10-06

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