How to wind up carrier tape

Abstract

To provide a method to wind carrier tape that can prevent loosening and warping.SOLUTION: A method for winding a long strip-shaped carrier tape 10 around a winding reel 1, includes: winding an interlayer tape 20 which is wider than the carrier tape 10 together with the carrier tape 10 on a multi-layer traverse roll; and bringing side portions 22 protruding from the carrier tape 10, of the interlayer tape 20 made of a resin film 21 into contact with, and overlapping side portions of the adjacent carrier tape 10. The side portion 22 of the resin film 21 protrude respectively from the side portions of the carrier tape 10 and overlap the side portions of the adjacent carrier tape 10, providing interference coupling effect equivalent to that of overlapping the carrier tape 10, thereby, stabilization of a posture of the carrier tape 10 can be expected. This can prevent the carrier tape 10 from loosening, and can effectively eliminate a risk of large warping of the carrier tape 10.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a method for winding a carrier tape used for storing, preserving, transporting, and shipping semiconductor devices and electronic components.

Background Art

[0002] Conventionally, when storing, preserving, transporting, and shipping a plurality of electronic components individually, a carrier tape is used from the viewpoints of efficiently handling small-sized electronic components that are difficult to handle, preventing damage to the electronic components, or storing as many electronic components as possible.

[0003] This type of carrier tape 10 includes a resin sheet 11 that is wound around a winding reel 1 in a traverse winding (spiral winding) manner, as shown in FIG. 3, and a plurality of pockets 13 that are continuously arranged in the longitudinal direction of the resin sheet 11. A plurality of sprocket holes 12 are continuously arranged in the longitudinal direction of the side portion of the resin sheet 11. After being manufactured, it is wound around the winding reel 1 in a traverse winding manner for storage, transportation, and shipping (see Patent Documents 1 and 2).

[0004] When winding the carrier tape 10 around the winding reel 1 in a traverse winding manner, the carrier tape 10 is wound around the core 4 of the winding reel 1 with a tension applied while being shifted by about the tape width in a multi-layer ordinary winding UW. However, when winding a carrier tape 10 with a narrow tape width around the winding reel 1 in a traverse winding manner, it is not uncommon to alternately repeat the ordinary winding UW and the overlapping winding OW from the viewpoint of winding the long carrier tape 10 without collapsing.

[0005] When traversing the carrier tape 10 by alternating between normal winding (UW) and overlapping winding (OW), first, the first layer of carrier tape 10 is wound onto the winding core 4 of the winding reel 1, starting from one side plate 2 and moving toward the other side plate 3, while shifting it by approximately the width of the tape, and the carrier tape 10 is wound normally without overlapping the other side (see Figure 3). Once the first layer of carrier tape 10 has been wound normally up to the vicinity of the other side plate 3 of the winding reel 1, the direction of movement of the carrier tape 10 is reversed, and the second layer of carrier tape 10 is wound onto the winding reel, shifting it laterally, while applying tension, and in this case, the other side of the carrier tape 10 is overlapped and wound (see Figure 4).

[0006] Once the second layer of carrier tape 10 is wound onto the winding reel 1 up to the vicinity of one side plate 2, the direction of movement of the carrier tape 10 is reversed again, and the third layer of carrier tape 10 is wound onto the reel with tension applied while shifting it by approximately the width of the tape. At this time, as with the first layer, the carrier tape 10 is wound in a normal UW winding pattern. These normal UW winding and overlapping OW winding processes are then repeated alternately (see Figure 5), so that the carrier tape 10 is wound into a multi-layered traverse winding pattern. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2001-247158 [Patent Document 2] Japanese Patent Application Publication No. 10-059471 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] Conventional carrier tapes 10 are wound in a traverse winding manner as described above, but winding loosening can occur due to vibrations during transport. Possible means to eliminate this problem include (1) a method of winding the carrier tape 10 with strong tension, and (2) a method of overlapping the carrier tape 10 while shifting it by a width less than or equal to the tape width, as shown in Figure 4.

[0009] However, in the case of method (1), although it is possible to prevent winding loosening, excessive tension is applied to the carrier tape 10, which may cause significant warping of the carrier tape 10. Also, in the case of method (2), the sides of adjacent carrier tapes 10 overlap and interfere with each other, which is possible to prevent winding loosening, but there is a considerable risk of significant warping of the carrier tape 10.

[0010] The present invention has been made in view of the above, and aims to provide a method for winding a carrier tape that can suppress the occurrence of winding looseness and warping. [Means for solving the problem]

[0011] In order to solve the above problems, the present invention provides a method for winding a carrier tape onto a winding reel, An interlayer tape wider than the width of the carrier tape is laminated onto the surface of the carrier tape, The interlayer tape is wound in a traverse winding manner together with the carrier tape, and the side portion of the interlayer tape that protrudes from the carrier tape is attached to the adjacent carrier tape. Side view Its distinguishing feature is that it is layered.

[0012] Furthermore, when winding the carrier tape and interlayer tape onto the winding reel in a multi-layer traverse winding pattern, the carrier tape can be wound in a normal winding pattern without overlapping one side with the other. Also, interlayer tape The resin film is made with a thickness of 20 μm to 50 μm, and the width of this resin film is the carrier tape. It is preferable that the width be between 1.5 and 3 times the width of the element.

[0013] Furthermore, it is preferable that the static friction coefficient of the resin film be 0.2 or higher when measured in accordance with the friction coefficient test method of JIS K7125:1999. Furthermore, it is preferable that the surface roughness (Ra) of the resin film be 0.2 μm or greater when measured in accordance with JIS B0601:2013.

[0014] Here, the carrier tape in the claims comprises a strip-shaped sheet and a plurality of storage recesses formed in the longitudinal direction of the central part of the sheet for storing small items, and a plurality of sprocket holes are provided in the longitudinal direction of at least one of the two sides of the sheet. The carrier tape may have a single-layer structure, but a multi-layer structure is preferred. The interlayer tape may be transparent, opaque, or translucent, and is laminated directly onto the surface of the carrier tape. The sides of the interlayer tape may be one side or both sides of the interlayer tape.

[0015] According to the present invention, when a carrier tape is wound onto a winding reel in a traverse winding manner, the side portion of the interlayer tape protrudes from the side portion of the carrier tape, and the adjacent carrier tape Side view Although they come into contact and overlap, this overlap produces an interference coupling effect that is almost equivalent to that of overlapping carrier tapes, thus stabilizing the position and orientation of the carrier tape. [Effects of the Invention]

[0016] According to the present invention, the side portion of the interlayer tape that protrudes from the carrier tape is connected to the adjacent carrier tape. Side view Because it is layered on top of the other layer, it has the effect of suppressing loosening and warping of the carrier tape.

[0017] According to the invention described in claim 2, since the interlayer tape is a resin film instead of paper, it is possible to prevent the generation of dust and prevent the contamination of the carrier tape. In addition, since the width of the resin film is not less than 1.5 times the width of the carrier tape, the side portion of the interlayer tape protruding from the carrier tape can be surely overlapped with the side portion of the adjacent carrier tape. Further, since the width of the resin film does not exceed 3 times the width of the carrier tape, it is possible to reduce costs by saving waste of the resin film.

[0018] According to the invention described in claim 3, since the coefficient of static friction of the resin film is 0.2 or more when measured in accordance with the friction coefficient test method of JIS K7125:1999, it is possible to suppress the unwinding associated with the slippage of the carrier tape wound in a traverse manner, and to eliminate the possibility of the carrier tape unwinding or warping.

[0019] According to the invention described in claim 4, since the surface roughness (Ra) of the resin film is 0.2 μm or more when measured in accordance with JIS B0601:2013, it is possible to eliminate the possibility of the carrier tape unwinding or warping.

Brief Description of the Drawings

[0020] [Figure 1] It is an explanatory drawing schematically showing an embodiment of a method for winding a carrier tape according to the present invention. [Figure 2] It is an explanatory drawing schematically showing a carrier tape in an embodiment of a method for winding a carrier tape according to the present invention. FIG. (a) is a plan view, and FIG. (b) is a cross-sectional view of FIG. (a). [Figure 3] It is an explanatory drawing showing a state where the first layer of the carrier tape is wound around the core of the take-up reel in a normal traverse winding. [Figure 4] It is an explanatory drawing showing a state where the second layer of the carrier tape is wound around the core of the take-up reel in an overlapping traverse winding. [Figure 5] It is an explanatory drawing showing a state where the carrier tape is wound around the core of the take-up reel in a normal winding and an overlapping traverse winding. [Modes for carrying out the invention]

[0021] A preferred embodiment of the present invention will now be described with reference to the drawings. In this embodiment, as shown in Figure 1, when winding the carrier tape 10 onto the winding reel 1, an interlayer tape 20 wider than the carrier tape 10 is wound together with the carrier tape 10 in a traverse winding manner, and the side portion 22 of the interlayer tape 20 that protrudes from the carrier tape 10 is brought into contact with the adjacent carrier tape 10, thereby contributing to the achievement of Goal 9 of the SDGs (Sustainable Development Goals, which are the United Nations' international goals for sustainable development, consisting of 17 global goals and 169 targets (achievement criteria)) adopted at the UN Summit.

[0022] As shown in Figures 1 and 3, the winding reel 1 comprises two opposing disc-shaped side plates 2 and 3, with a cylindrical core 4 on which the carrier tape 10 is wound sandwiched between the centers of the two side plates 2 and 3. The side plates 2, 3 and 4 constituting the winding reel 1 are molded from a predetermined resin, such as polystyrene resin or recycled polystyrene resin, to prevent the generation of dust, and these resins are selectively to which antistatic agents, conductive agents, etc., are added.

[0023] As shown in Figures 1 and 2(a) and (b), the carrier tape 10 is an embossed carrier tape comprising a resin sheet 11 with a length of 200m to 2000m that is traverse-wound (spiral-wound) onto the winding core 4 of the winding reel 1 from the perspective of winding a long length, and a plurality of pockets 13 arranged and formed on the resin sheet 11 for housing electronic components, with a plurality of sprocket holes 12 punched in a row on at least one of the two sides of the resin sheet 11.

[0024] The resin sheet 11 is formed into an elongated strip-shaped tape with a thickness of 0.1 mm to 0.5 mm using a molding material containing a predetermined resin, and is wound in multiple layers onto a winding reel 1. The molding material for this resin sheet 11 is prepared by selectively adding necessary antistatic agents, carbon conductive agents, etc., to a predetermined resin. The predetermined resin for the molding material is not particularly limited, but examples include hydrocarbon resins, amorphous polyethylene terephthalate (APET) resin, polycarbonate (PC) resin, polypropylene (PP) resin, ABS resin, MBS resin, etc.

[0025] Among these resins, it is preferable to use a hydrocarbon-based resin as the main component, from the viewpoint of preventing the carrier tape 10 from curling or warping. Examples of such hydrocarbon-based resins include transparent polystyrene (PS) resin, which has excellent versatility, conductive polystyrene resin, which can prevent electrostatic problems, and polyethylene (PE) resin.

[0026] The resin sheet 11 may be formed as a single layer from one type of resin, but preferably, from the viewpoint of multifunctionality, it is formed as a laminate from multiple types of resins. For example, the first to third layers may be formed as a laminated structure of polystyrene resins of different thicknesses, or the first layer may be a thin polyethylene resin, the second layer a thick polystyrene resin, and the third layer a thin polyethylene resin. Alternatively, the first layer may be a laminated structure of polystyrene resin, the second layer a polyethylene resin, and the third layer a polystyrene resin, or the first layer may be a thin ABS resin, the second layer a thick polystyrene resin, and the third layer a thin ABS resin.

[0027] However, from the standpoint of reducing the manufacturing cost of the carrier tape 10, it is preferable that more than 50% of the resin sheet 11 is made of polystyrene resin, and moreover, that the central core layer is made of polystyrene resin.

[0028] The resin sheet 11 is standardized by JIS, but types with tape widths of 4 mm to 32 mm (4 mm, 8 mm, 12 mm, 16 mm, 24 mm, 32 mm) are mainly used. In the case of types with a tape width of 24 mm or less, multiple sprocket holes 12 are punched in a row along the longitudinal direction on one side of the resin sheet 11, so that one side of the resin sheet 11 is formed as a sprocket flange with multiple sprocket holes 12, while the other side of the resin sheet 11 is formed as a free flange without multiple sprocket holes 12. In contrast, in the case of types with a tape width of 32 mm or more, multiple sprocket holes 12 are punched in a row along the longitudinal direction on both sides of the resin sheet 11, so that both sides of the resin sheet 11 are formed as sprocket flanges with multiple sprocket holes 12.

[0029] Multiple pockets 13 are formed by embossing the central part of the resin sheet 11, in other words, along the longitudinal direction of the embossed area at predetermined intervals, and each pocket 13 is formed in the shape of a rectangular bottomed tube. These multiple pockets 13 house various electronic components, such as aluminum electrolytic capacitors, IC chips, resistors, diodes, etc., and the openings are sealed by later adhering an adhesive cover tape to the surface of the resin sheet 11, preventing the electronic components from falling out. The cover tape is made of a transparent resin tape molded from, for example, polystyrene resin or polycarbonate resin, and is adhered to the area from the central part of the resin sheet 11 to the free flange.

[0030] As shown in Figure 1, the interlayer tape 20 is made of a transparent resin film 21 that is wider than the resin sheet 11 of the carrier tape 10. It is laminated on the surface of the resin sheet 11, with its sides 22 protruding, and these protruding sides 22 overlap and come into contact with the sides of adjacent carrier tapes 10, thereby contributing to the stabilization of the winding position of the carrier tape 10.

[0031] The resin film 21 is formed into a thin film using a molding material containing, for example, polyethylene terephthalate (PET) resin, polyethylene ether ether ketone (PEEK) resin, polyvinyl alcohol (PVA) resin, or polyvinyl chloride (PVC) resin. Among these resins, polyethylene terephthalate resin is preferred due to its excellent transparency, heat resistance, and strength. Considering practicality, moldability, and strength, the thickness of the resin film 21 is preferably 20 μm to 50 μm, more preferably 25 μm to 50 μm, and more preferably 30 μm to 50 μm. The thickness of the resin film 21 can be measured using a dedicated micrometer or the like.

[0032] The width of the resin film 21 is preferably 1.5 times or more and less than 3 times, more preferably 1.6 times or more and less than 3 times, and more preferably 1.66 times or more and less than 3 times, the width of the carrier tape 10, from the viewpoint of stabilizing the shape of the traverse-wound carrier tape 10 by allowing the side portion 22 of the resin film 21 to appropriately protrude from the side portion of the carrier tape 10.

[0033] Specifically, if the carrier tape 10 is 4mm wide, the width should be 6.0mm or more and less than 12mm, preferably around 6.7mm; if the carrier tape 10 is 8mm wide, the width should be 12mm or more and less than 24mm, preferably around 13.3mm; if the carrier tape 10 is 12mm wide, the width should be 18mm or more and less than 36mm, preferably around 20mm; if the carrier tape 10 is 16mm wide, the width should be 24mm or more and less than 48mm, preferably around 26.7mm; if the carrier tape 10 is 24mm wide, the width should be 36mm or more and less than 72mm, preferably around 40mm; and if the carrier tape 10 is 32m wide, the width should be 48mm or more and less than 96mm, preferably around 53.3mm.

[0034] The static friction coefficient of the resin film 21 should be 0.2 or higher, preferably 0.2 to 0.5, and more preferably 0.21 to 0.3, when measured in accordance with the friction coefficient test method of JIS K7125:1999. This is because if the static friction coefficient is less than 0.2, slippage will occur between the side portion 22 of the resin film 21 and the side portion of the adjacent carrier tape 10, making the long traverse-wound carrier tape 10 prone to collapse. When measuring the static friction coefficient of the resin film 21, measuring instruments such as AGS-X [manufactured by Shimadzu Corporation: product name] can be used.

[0035] The surface roughness (Ra) of the resin film 21 should be 0.2 μm or more, preferably 0.2 μm to 2 μm, more preferably 0.2 μm to 1.0 μm, and even more preferably 0.2 μm to 0.7 μm, when measured in accordance with JIS B0601:2013. This is because a surface roughness (Ra) of 0.2 μm or more makes it less likely for the shape of the traverse-wound carrier tape 10 to collapse. When measuring the surface roughness (Ra) of the resin film 21, various surface roughness meters, such as those manufactured by Keyence Corporation, Olympus Corporation, and Sato Shoji Co., Ltd., can be used.

[0036] When such a resin film 21 is detachably laminated onto the resin sheet 11 of the carrier tape 10, at least one side 22, preferably both sides 22, protrudes from the side of the carrier tape 10. This protruding side 22 is traversed and wrapped around the side of the adjacent row of carrier tape 10, thereby suppressing the tilt of the carrier tape 10 and stabilizing its position.

[0037] In the above configuration, when winding the manufactured carrier tape 10 onto the winding reel 1 in a multi-layer traverse winding manner, first, a resin film 21, which is an interlayer tape 20, is laminated onto the surface of the carrier tape 10, and its side portion 22 protrudes from the side of the carrier tape 10. Then, the first layer of carrier tape 10 is wound onto the winding core 4 of the winding reel 1, starting from one side plate 2 and moving towards the other side plate 3, while applying tension and shifting it together with the resin film 21 by approximately the width of the tape, so that one side of the carrier tape 10 and the other side do not overlap and are butted together in a normal winding manner (see Figure 1).

[0038] In this case, one side 22 of the resin film 21 protrudes from one side of the carrier tape 10 in the direction of the winding core width of the winding reel 1, and contacts and covers the other side of the adjacent row of carrier tape 10. This covering exhibits an interference coupling effect equivalent to that of overlapping winding OW of the carrier tape 10, thus stabilizing the position and orientation of the carrier tape 10.

[0039] Once the first layer of carrier tape 10 has been wound normally up to the vicinity of the other side plate 3 of the winding reel 1, the direction of movement of the carrier tape 10 is reversed, and the second layer of carrier tape 10 is wound while applying tension and shifting it laterally together with the resin film 21, so that the other side and one side of the carrier tape 10 are butted together and wound normally (see Figure 1).

[0040] In this case, one side portion 22 of the resin film 21 protrudes from one side of the carrier tape 10 in the direction of the winding core width of the winding reel 1, and contacts and covers the other side of the adjacent row of carrier tape 10. This covering exhibits an interference coupling effect equivalent to that of overlapping winding OW of the carrier tape 10, so stabilization of the position and orientation of the carrier tape 10 can be expected. If both sides 22 of the resin film 21 protrude from the sides of the carrier tape 10, the other side 22 of the resin film 21 may be made to protrude from the other side of the carrier tape 10 in the direction of the winding core width of the winding reel 1, and may be brought into contact with one side of the carrier tape 10 of the adjacent row to cover it.

[0041] Subsequently, these ordinary windings UW are repeated, and the carrier tape 10 is wound into a multi-layer traverse winding, which is then stored, kept, transported, and transported in this wound form.

[0042] As described above, the side portion 22 of the resin film 21 protrudes from the side portion of the carrier tape 10 and overlaps with the side portion of the adjacent carrier tape 10, exhibiting the same effect as overlapping winding OW of the carrier tape 10, thus greatly stabilizing the posture of the carrier tape 10 can be expected. Therefore, it is possible to prevent the carrier tape 10 from becoming loose and to effectively eliminate the risk of significant warping occurring in the carrier tape 10. In addition, it is possible to combine regular winding UW with overlapping winding OW and avoid the trouble of alternating between the two.

[0043] Furthermore, since the interlayer tape 20 is a resin film 21 rather than paper, it can prevent the generation of dust and thus prevent contamination of the carrier tape 10. In addition, because the resin film 21 is a thin film with a thickness of 20 μm to 50 μm, even if it overlaps the side of an adjacent carrier tape 10, it can reduce the tilt of the adjacent carrier tape 10, and is expected to prevent the carrier tape 10 from becoming loose.

[0044] Furthermore, in the above embodiment, silicone may be applied to one or all sides of the resin sheet 11 of the carrier tape 10 as needed to facilitate the removal of electronic components. Additionally, an antistatic agent or a conductive agent may be selectively applied to the resin sheet 11 of the carrier tape 10. Each pocket 13 may also be molded into a bottomed cylindrical shape such as a planar circular, elliptical, or polygonal. [Examples]

[0045] The following describes embodiments of the carrier tape winding method according to the present invention, along with comparative examples. [Example 1] First, a multi-layered resin sheet was prepared and softened. This softened resin sheet was then molded to form multiple pockets, and multiple sprocket holes were punched in the longitudinal direction along one side of the resin sheet. The resin sheet was then cut to produce a carrier tape with a width of 4 mm. The resin sheet was a three-layered sheet of polystyrene resin with different thicknesses for the first three layers, and its thickness was measured to be 0.3 mm.

[0046] After manufacturing the carrier tape in this way, a resin film, which is an interlayer tape, was laminated onto the resin sheet surface of the carrier tape, with both sides of the film protruding from the sides of the carrier tape. The resin film used was a commercially available polyethylene terephthalate resin film with a thickness of 50 μm, and the width of this polyethylene terephthalate resin film was set to 6.0 mm. Furthermore, the static friction coefficient of the resin film was measured in accordance with the friction coefficient test method of JIS K7125:1999 and was found to be 0.21.

[0047] Next, tension was applied to the carrier tape and resin film in the winding core width direction of the winding reel, shifting them by approximately the width of the tape, and the tape was wound in a multi-layered, normal winding pattern without overlapping one side of the carrier tape with the other. Upon observation of this traversed carrier tape, it was found that the sides of the resin film protruded from the sides of the carrier tape and overlapped with the sides of the carrier tape in the adjacent row. After traversing the route, the carrier tape was visually inspected for any looseness or significant warping. The inspection revealed no looseness or significant warping in the carrier tape.

[0048] [Example 2] The procedure is basically the same as in Example 1, but a resin sheet was cut to produce a carrier tape with a width of 8 mm. In addition, a commercially available polyethylene terephthalate resin film with a thickness of 50 μm was used as the resin film, but the width of this polyethylene terephthalate resin film was changed to 13.3 mm. Similar to Example 1, the carrier tape wrapped in a traverse pattern was visually inspected for any looseness or significant warping. However, no looseness or significant warping was found in the carrier tape.

[0049] [Example 3] The procedure is basically the same as in Example 1, but a 12mm wide carrier tape was manufactured by cutting a resin sheet. In addition, a commercially available 50μm thick polyethylene terephthalate resin film was used, but the width of this polyethylene terephthalate resin film was changed to 35mm. Similar to Example 1, the carrier tape wrapped in a traverse pattern was visually inspected for looseness and significant warping. However, no looseness or significant warping was found in the carrier tape.

[0050] [Example 4] The procedure is basically the same as in Example 1, but a carrier tape with a width of 16 mm was manufactured. In addition, the resin film was a polyethylene terephthalate resin film with a thickness of 50 μm, but the width of this polyethylene terephthalate resin film was changed to 26.7 mm. Similar to Example 1, the traverse-wound carrier tape was visually inspected for any looseness or significant warping. However, no looseness or significant warping was found in the carrier tape.

[0051] [Example 5] The procedure is basically the same as in Example 1, but a carrier tape with a width of 24 mm was manufactured. In addition, the resin film was a polyethylene terephthalate resin film with a thickness of 50 μm, but the width of this polyethylene terephthalate resin film was increased to 54 mm. Similar to Example 1, the carrier tape wrapped in a traverse pattern was visually inspected for looseness and significant warping, and no looseness or significant warping was observed in the carrier tape.

[0052] [Example 6] The procedure is basically the same as in Example 1, but multiple sprocket holes are punched in the longitudinal direction along both sides of the resin sheet, and the resin sheet is cut to produce a carrier tape with a width of 32 mm. In addition, the resin film used was a polyethylene terephthalate resin film with a thickness of 50 μm, but the width of this polyethylene terephthalate resin film was increased to 95 mm. Similar to Example 1, the traverse-wound carrier tape was visually inspected for looseness and significant warping. The inspection revealed slight looseness and warping in the carrier tape, but these were within a range that would not impede practical use.

[0053] [Comparative Example 1] First, a multilayer resin sheet was prepared and softened. This softened resin sheet was then molded to form multiple pockets, and multiple sprocket holes were punched in the longitudinal direction along one side of the resin sheet. The resin sheet was then cut to produce a carrier tape with a width of 12 mm. The resin sheet consisted of three layers of polystyrene resin with different thicknesses for the first three layers, and its thickness was measured to be 0.3 mm. Furthermore, no interlayer resin film was laminated onto the surface of the resin sheet of the carrier tape.

[0054] Next, the carrier tape manufactured in the winding core width direction of the winding reel was wound under tension while being shifted by approximately the width of the tape, and the carrier tape was traversed in a multi-layered normal winding without overlapping one side with the other. After that, the traversed carrier tape was visually inspected for any looseness or significant warping. As a result of the inspection, since the resin film, which is the interlayer tape, was omitted, looseness and significant warping were confirmed in the carrier tape, raising doubts about its practicality.

[0055] [Comparative Example 2] The procedure was basically the same as in Comparative Example 1, but the carrier tape was wound into a multi-layered traverse winding by alternating between normal winding and overlapping winding. After that, the traverse-wound carrier tape was visually inspected for any looseness or significant warping. Although no loosening of the carrier tape was found during the inspection, the omission of the interlayer resin film resulted in significant warping of the carrier tape, causing practical problems. [Industrial applicability]

[0056] The carrier tape winding method according to the present invention is used in manufacturing fields such as machinery, electronics, precision parts, and semiconductor parts. [Explanation of Symbols]

[0057] 1. Winding reel 4 cores 10 Carrier Tapes 11 Resin sheet 12 sprocket holes 13 pockets 20-layer tape 21 Resin film 22 Sides (one side, other side, both sides) OW layered wrap UW Regular Roll

Claims

1. A method for winding a carrier tape onto a reel, characterized in that an interlayer tape wider than the width of the carrier tape is laminated onto the surface of the carrier tape, the interlayer tape is wound together with the carrier tape in a traverse winding manner, and the side portion of the interlayer tape that protrudes from the carrier tape is overlapped with the back surface of the side portion of the adjacent carrier tape.

2. The method for winding a carrier tape according to claim 1, wherein the interlayer tape is a resin film with a thickness of 20 μm or more and 50 μm or less, and the width of the resin film is 1.5 times or more and less than 3 times the width of the carrier tape.

3. A method for winding a carrier tape according to claim 2, wherein the static friction coefficient of the resin film is 0.2 or greater when measured in accordance with the friction coefficient test method of JIS K7125:1999.

4. A method for winding a carrier tape according to claim 2 or 3, wherein the surface roughness (Ra) of the resin film is 0.2 μm or more when measured in accordance with JIS B0601:2013.

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