Carrier tape

Abstract

To provide a carrier tape allowed to stabilize the position of a component during accommodation or taking out even in any of cases of a component weak in magnetism and of difficulty in providing a bottom hole.SOLUTION: A carrier tape 10 in the present disclosure, having an accommodation recess 13 to receive a component, comprises a belt-like sheeted base material 11 that extends in a predetermined direction and a bottom member 12 made of non-woven fabric that is fixed on a lower surface of the sheeted base material 11. The accommodation recess 13 is configured by an upper opening 15 of the sheeted base material 11, a peripheral wall 18 of an accommodation hole 16 in the sheeted base material 11 and a partial area 12a of the bottom member 12. The bottom surface of the accommodation recess 13 is the partial area 12a of the bottom member 12 made of non-woven fabric.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a carrier tape that houses components. [Background technology]

[0002] A carrier tape having a storage recess for storing components such as electronic components is used as a tape package (tape product) by inserting the components into the storage recess and then sealing the opening of the storage recess with a cover tape. When using the components, the cover tape of the tape package is peeled off and the components are removed from the storage recess of the carrier tape.

[0003] For example, Patent Document 1 discloses a carrier tape. The material of this carrier tape is low-density, bulky paper such as paper, paperboard, or nonwoven fabric. Recesses for accommodating electronic components are formed in the carrier tape by embossing or the like. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-43975 Summary of the Invention [Problem to be solved by the invention]

[0005] Depending on the shape and size of the components to be stored inside, when storing the components in the storage recess of the carrier tape, the components may be magnetically attracted to the back side of the storage recess or vacuum-sucked through a bottom hole drilled in the center of the storage recess in order to stabilize the position of the components.

[0006] Furthermore, when removing (mounting) a component from the storage recess of the carrier tape, if the component's position within the storage recess is not stable, a pickup error may occur. Therefore, as with inserting a component into the storage recess, in order to stabilize the component's position, the component may be attracted to a magnet or vacuum-sucked through a bottom hole drilled in the center of the storage recess.

[0007] Magnetic attraction cannot be applied to components with weak magnetism. On the other hand, bottom holes pose risks such as dust generation, foreign matter contamination, and interference with component terminals depending on the drilling condition. Drilling can also be difficult due to restrictions on the shape and size of the storage recess. In particular, when components are small, the bottom holes must also be small, which requires advanced technology to form small bottom holes with precision.

[0008] Therefore, the present disclosure aims to provide a carrier tape that can stabilize the posture of components when storing or removing them, regardless of whether the components have weak magnetism or it is difficult to provide a bottom hole. [Means for solving the problem]

[0009] In order to solve the above problems, a first aspect of the present invention is a carrier tape having a storage recess capable of storing a component, wherein at least the bottom surface of the storage recess is made of nonwoven fabric.

[0010] A second aspect of the present invention is the carrier tape of the first aspect, wherein the entire tape is made of nonwoven fabric.

[0011] A third aspect of the present invention is the carrier tape of the first aspect or the second aspect, wherein the breathability of the nonwoven fabric measured in accordance with JIS L 1096 A method is 1 cm 3 / (cm 2 ·s) over 800cm 3 / (cm 2 ·s) or less. [Effects of the Invention]

[0012] According to the present disclosure, a carrier tape can be provided that can stabilize the posture of components when storing or removing them, even in cases where the components have weak magnetism or where it is difficult to provide a bottom hole. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a plan view showing a carrier tape according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view taken along the line II-II in FIG. [Figure 3] FIG. 4 is a plan view showing a carrier tape according to a second embodiment of the present invention. [Figure 4] FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3. [Figure 5] FIG. 10 is a plan view showing a carrier tape according to a third embodiment of the present invention. [Figure 6] FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 5. [Figure 7] FIG. 10 is a plan view showing a carrier tape according to a fourth embodiment of the present invention. [Figure 8] FIG. 8 is a cross-sectional view taken along the line VIII-VIII in FIG. 7. [Figure 9] FIG. 10 is an explanatory diagram of a first suction test. [Figure 10] FIG. 10 is an explanatory diagram of a second suction test. DETAILED DESCRIPTION OF THE INVENTION

[0014] A carrier tape according to one embodiment of the present invention will be described in detail below with reference to the drawings. In each drawing, X indicates the longitudinal direction of the carrier tape, Y indicates the width direction of the carrier tape, and Z indicates the thickness direction of the carrier tape. In addition, in Figs. 9 and 10, UP indicates upward. In the embodiments of this specification, the same components are denoted by the same reference numerals throughout. In addition, in describing the configuration of the carrier tape, the opening (top opening) side of the storage recess is defined as upward, and the recessed side (bottom side) is defined as downward.

[0015] (First embodiment) Fig. 1 is a plan view showing a carrier tape according to a first embodiment of the present invention. Fig. 2 is a cross-sectional view taken along the line II-II in Fig. 1. In Fig. 1 and Fig. 2, the cover tape is shown by a two-dot chain line.

[0016] 1 and 2, a carrier tape 10 according to a first embodiment of the present invention is a member for storing a plurality of components EP (see FIGS. 9 and 10), and is a substantially strip-shaped member formed long in the conveyance direction (X direction). The carrier tape 10 includes a strip-shaped sheet substrate 11 extending in a predetermined direction (X direction), and a bottom member (nonwoven fabric) 12 fixed to the lower surface of the sheet substrate 11. A storage recess 13 recessed from top to bottom is formed in the carrier tape 10.

[0017] The storage recess 13 is formed to be recessed downward from the upper surface of the sheet substrate 11 of the carrier tape 10, and defines an internal storage space 14 for storing the component EP. The size of the storage recess 13 is large enough to store the component EP. In other words, the carrier tape 10 has a storage recess 13 that can store the component EP. The carrier tape 10 becomes a tape package by storing the component EP in the storage space 14 of the storage recess 13 and sealing the upper opening 15 above the storage recess 13 with a cover tape CT. The tape package can be used to store, transport, and smoothly supply the components EP to a mounting machine that mounts the components EP on a board.

[0018] The sheet substrate 11 is a resin sheet-like substrate, and is formed from, for example, synthetic resins such as polyvinyl chloride, polystyrene, amorphous polyethylene terephthalate, polycarbonate, or polypropylene; resins such as these that have been kneaded with carbon to impart conductivity; or resins with a conductive coating applied to the surface. The width (length in the width direction) of the sheet substrate 11 is not particularly limited, and may be 4 mm, 8 mm, 12 mm, 16 mm, 24 mm, or the like. Note that, although the sheet substrate 11 is made of resin in this embodiment, it is not limited thereto, and may be, for example, a sheet made of nonwoven fabric or a sheet made of paper.

[0019] The sheet base material 11 has storage holes 16 formed therein that penetrate the sheet base material 11 in the thickness direction (Z direction). The sheet base material 11 of this embodiment has a plurality of storage holes 16 formed therein that are arranged at a predetermined pitch (interval) in the longitudinal direction. The sheet base material 11 of this embodiment also has a plurality of feed holes 17 formed therein that are arranged at a predetermined pitch (interval) in the longitudinal direction. The shape and interval of the feed holes 17 are not particularly limited, and are formed to suit the feed mechanism of a mounting machine or the like. The feed holes 17 may also be formed on both sides of the carrier tape 10 in the width direction along two sides extending in the longitudinal direction of the carrier tape 10.

[0020] The storage hole 16 of the sheet substrate 11 has an upper opening 15 that opens upward on the upper surface side of the sheet substrate 11, a peripheral wall 18 that extends continuously downward from the upper opening 15, and a lower opening 19 on the lower surface side of the sheet substrate 11, and constitutes a part of the storage recess 13. The peripheral wall 18 of the storage hole 16 functions as a side surface of the storage recess 13 and defines the side of the storage space 14 that stores the part EP. In this embodiment, the shape of the upper opening 15, the cross-sectional shape of the peripheral wall 18, and the shape of the lower opening 19 are substantially rectangular, but these shapes are not limited to this and can be formed into any desired shape to match the shape of the part EP.

[0021] The bottom member 12 is a sheet-like member made of breathable nonwoven fabric and is fixed to the lower surface of the sheet substrate 11 to close the lower openings 19 of the storage holes 16. In this embodiment, multiple bottom members 12 are provided so that the lower openings 19 of the multiple storage holes 16 in the sheet substrate 11 are closed by separate bottom members 12. A region (bottom surface) 12a of the bottom members 12 exposed within the lower openings 19 of the storage holes 16 in the sheet substrate 11 functions as the bottom surface of the storage recess 13 and defines the lower part of the storage space 14. That is, the storage recess 13 in this embodiment is constituted by the upper opening 15, the peripheral wall 18 of the storage hole 16, and a partial region 12a of the bottom member 12, and the bottom surface of the storage recess 13 (the partial region 12a of the bottom member 12) is made of nonwoven fabric. From the viewpoint of preventing foreign matter from entering, it is preferable that the region 12a of the bottom member 12 does not have an opening such as a suction port for sucking the component EP in the storage recess 13 from the outside.

[0022] The material of the nonwoven fabric constituting the bottom member 12 is not particularly limited, but examples thereof include nonwoven fabrics made from one or more of synthetic fibers made from synthetic resins such as polypropylene (PP), polyethylene (PE), and polyester (PET), polylactic acid (PLA) fibers, acrylic fibers, vinylon, aramid fibers, rayon (recycled fibers), nylon, cotton, hemp, pulp, silk, wool, bamboo, mineral fibers, and glass fibers. The method for forming the nonwoven fabric is not particularly limited, but examples thereof include dry methods, wet methods, meltblown methods, and spunbond methods. Among these, the spunbond method, which directly aggregates long fibers, is preferred from the viewpoint of reducing dust generation. In particular, spunbond nonwoven fabrics made from one or more of synthetic fibers made from synthetic resins such as polypropylene (PP), polyethylene (PE), and polyester (PET), and polylactic acid (PLA) fibers are more preferred.

[0023] The size of the bottom member 12 is slightly larger than the lower opening 19 of the storage hole 16. The longitudinal length of the bottom member 12 is slightly larger on both longitudinal sides than the longitudinal length of the lower opening 19 of the storage hole 16, and is set to a size such that the bottom member 12 does not come into contact with other bottom members 12 that close the lower opening 19 of other storage holes 16 adjacent in the longitudinal direction. In addition, the widthwise length of the bottom member 12 is slightly larger on both widthwise sides than the widthwise length of the lower opening 19 of the storage hole 16. Both widthwise end edges of the bottom member 12 are located widthwise inward of both widthwise end edges of the sheet substrate 11. In this embodiment, the widthwise end edges of the bottom member 12 are located widthwise inward of the feed holes 17.

[0024] The air permeability of the nonwoven fabric constituting the bottom member 12 is 1 cm 3 / (cm 2 ·s) over 800cm 3 / (cm 2 It is preferable that the air permeability of the nonwoven fabric constituting the bottom member 12 is 1 cm 3 / (cm 2 If the air permeability of the nonwoven fabric constituting the bottom member 12 is set to 800 cm 3 / (cm 2 If the distance is larger than s), the part EP may become entangled in the fibers of the nonwoven fabric that constitutes the bottom member 12, and foreign matter may pass between the fibers of the nonwoven fabric that constitutes the bottom member 12 and enter the storage space 14. The air permeability of the nonwoven fabric that constitutes the bottom member 12 is measured based on JIS L 1096 A method.

[0025] It is preferable to impart conductivity to the bottom surface member 12 from the viewpoint of suppressing the generation of static electricity (preventing charging). The method of imparting conductivity to the bottom surface member 12 is not particularly limited, but examples include a method of kneading a conductive material into each material before forming the sheet-like nonwoven fabric that constitutes the bottom surface member 12, a method of coating a conductive material on the surface of the formed sheet-like nonwoven fabric, and a method of laminating a conductive sheet to the sheet-like nonwoven fabric. If static electricity is generated when peeling the cover tape CT from the carrier tape 10 to remove the component EP, the generated static electricity may move the component EP, resulting in a pickup error. However, by imparting conductivity to the bottom surface member 12, the generation of static electricity can be suppressed, thereby reducing pickup errors.

[0026] The cover tape CT is a strip-shaped tape that seals the upper opening 15 of the storage recess 13 of the carrier tape 10. It includes at least a base layer, which is the main body of the cover tape CT, and an adhesive layer (not shown). The base layer is the base material of the cover tape CT, and is, for example, a biaxially oriented film such as polyethylene terephthalate (PET), polyamide (PA), or polyethylene naphthalate (PEN), or one of these resin films that has been subjected to an antistatic or conductive treatment. The adhesive layer is formed from an adhesive (or bondable) resin such as an acrylic or polystyrene resin. The adhesive layer is provided along the longitudinal direction of the base layer at positions corresponding to both widthwise outer sides of the storage recess 13, and is adhered to the upper surface of the sheet base material 11 of the carrier tape 10. An intermediate layer may be provided between the base layer and the adhesive layer.

[0027] Next, a method for manufacturing the carrier tape 10 will be described.

[0028] The manufacturing method of the carrier tape 10 includes a storage hole forming step and a bottom member attaching step.

[0029] The storage hole forming step is a step of forming storage holes 16 in the strip-shaped sheet base material 11. In the storage hole forming step, for example, the sheet base material 11 is placed between a male mold that forms the storage holes 16 and a female mold that receives the male mold, and the male mold and the female mold are pressed together to punch out the storage holes 16 and form the storage holes 16 that penetrate the sheet base material 11.

[0030] The bottom member attaching step is a step of attaching a bottom member 12, which is a nonwoven fabric sheet, to the sheet substrate 11. In the bottom member attaching step, the plurality of bottom members 12 are fixed (for example, fixed with an adhesive) to the lower surface of the sheet substrate 11 so that the bottom openings 19 of the plurality of storage holes 16 in the sheet substrate 11 are closed with the separate bottom members 12.

[0031] In the carrier tape 10 configured as described above, the bottom surface of the storage recess 13 is made of nonwoven fabric (bottom surface member 12) and has breathability, so that when storing the component EP in the storage recess 13 or when removing the component EP from the storage recess 13, the component EP can be sucked from the bottom surface member 12 side (below) by a vacuum ejector or the like. Therefore, even if the component EP has weak magnetism, the posture of the component EP can be stabilized when storing or removing the component EP by sucking the component EP from the bottom surface member 12 side.

[0032] Furthermore, when storing the part EP in the storage recess 13 or removing the part EP from the storage recess 13, the part EP can be sucked from the bottom member 12 side by a vacuum ejector or the like, so there is no need to provide a bottom hole (suction port) for sucking the part EP in the bottom surface of the storage recess 13. Therefore, even if it is difficult to provide a bottom hole in the bottom surface of the storage recess 13, the position of the part EP can be stabilized when storing or removing it by sucking the part EP from the bottom member 12 side.

[0033] Thus, according to this embodiment, a carrier tape 10 can be provided that can stabilize the posture of the component EP when storing or removing the component EP, even in cases where the component EP has weak magnetism or where it is difficult to provide a bottom hole.

[0034] Furthermore, since there is no need to provide a bottom hole in the bottom surface of the storage recess 13, it is possible to prevent foreign matter from entering the storage space 14 through the bottom hole.

[0035] (Second embodiment) Next, a second embodiment of the present invention will be described with reference to the drawings. The carrier tape 20 of this embodiment differs from the first embodiment in that a single strip-shaped bottom member 21 covers the lower openings 19 of the plurality of storage holes 16. Note that the same components as those of the first embodiment are designated by the same reference numerals and their description will be omitted.

[0036] Fig. 3 is a plan view showing a carrier tape according to a second embodiment of the present invention. Fig. 4 is a cross-sectional view taken along the line IV-IV in Fig. 3. In Figs. 3 and 4, the cover tape is shown by a two-dot chain line.

[0037] 3 and 4, a carrier tape 20 according to a second embodiment of the present invention is a member for storing a plurality of components EP (see FIGS. 9 and 10), and is a substantially strip-shaped member formed long in the conveyance direction (X direction). The carrier tape 20 includes a strip-shaped sheet substrate 11 extending in a predetermined direction (X direction), and a strip-shaped bottom member (nonwoven fabric) 21 fixed to the lower surface of the sheet substrate 11. A storage recess 22 recessed from top to bottom is formed in the carrier tape 20.

[0038] The storage recess 22 is formed to be recessed downward from the upper surface of the sheet substrate 11 of the carrier tape 20, and defines an internal storage space 23 for storing the component EP. The size of the storage recess 22 is large enough to store the component EP. In other words, the carrier tape 20 has a storage recess 22 that can store the component EP. The carrier tape 20 becomes a tape package by storing the component EP in the storage space 23 of the storage recess 22 and sealing the upper opening 15 above the storage recess 22 with a cover tape CT.

[0039] The bottom member 21 is a sheet-like member made of breathable nonwoven fabric, and is fixed to the lower surface of the sheet substrate 11 to close the lower openings 19 of the storage holes 16. In this embodiment, a strip-like bottom member 21 that is long in the longitudinal direction is provided so that one bottom member 21 closes the lower openings 19 of multiple storage holes 16. The bottom member 21 has multiple regions (bottom surfaces) 21a that are exposed within the lower openings 19 of the multiple storage holes 16 of the sheet substrate 11. These multiple regions 21a function as the bottom surfaces of the storage recesses 22 and define the lower part of the storage space 23. That is, the storage recesses 22 of this embodiment are constituted by the upper opening 15, the peripheral wall 18 of the storage holes 16, and a partial region 21a of the bottom member 21, and the bottom surface of the storage recesses 22 (the partial region 21a of the bottom member 21) is made of nonwoven fabric. In order to prevent foreign matter from entering, it is preferable that the plurality of regions 21a of the bottom member 21 are not provided with openings such as suction ports for sucking the components EP in the storage recess 22 from the outside.

[0040] The material and air permeability of the nonwoven fabric that constitutes the bottom member 21 are the same as those of the nonwoven fabric that constitutes the bottom member 12 of the first embodiment, and therefore a description thereof will be omitted.

[0041] The longitudinal length of the bottom member 21 is set to a length that allows it to cover the lower openings 19 of the multiple storage holes 16 in the sheet substrate 11. The multiple storage holes 16 means at least two or more storage holes 16, and may be all of the storage holes 16 provided in the sheet substrate 11, or a predetermined number of adjacent storage holes 16 among the storage holes 16 provided in the sheet substrate 11. That is, the carrier tape 20 may be provided with one bottom member 21 that covers the lower openings 19 of all of the storage holes 16, or multiple bottom members 21 that cover the lower openings 19 of a predetermined number (plurality) of adjacent storage holes 16 may be provided adjacent to each other in the longitudinal direction. From the viewpoint of ease of manufacturing, it is preferable that the carrier tape 20 be provided with one bottom member 21 that covers the lower openings 19 of all of the storage holes 16. Furthermore, the widthwise length of the bottom member 21 is slightly longer on both sides of the widthwise length of the lower openings 19 of the storage holes 16. Both widthwise edges of the bottom surface member 21 are located widthwise inward of both widthwise edges of the sheet substrate 11. In this embodiment, the widthwise edges of the bottom surface member 21 are located widthwise inward of the feed holes 17. In other words, the bottom surface member 21 is provided in a strip shape in a partial region of the sheet substrate 11 in the width direction.

[0042] As with the bottom surface member 12 of the first embodiment, it is preferable to impart conductivity to the bottom surface member 21 from the viewpoint of suppressing the generation of static electricity (preventing charging).

[0043] Next, a method for manufacturing the carrier tape 20 will be described.

[0044] The manufacturing method of the carrier tape 20 includes a storage hole forming step and a bottom member attaching step.

[0045] The storage hole forming step is a step of forming storage holes 16 in the strip-shaped sheet base material 11. In the storage hole forming step, for example, the sheet base material 11 is placed between a male mold that forms the storage holes 16 and a female mold that receives the male mold, and the male mold and the female mold are pressed together to punch out the storage holes 16 and form the storage holes 16 that penetrate the sheet base material 11.

[0046] The bottom member attaching step is a step of attaching a bottom member 21, which is a strip-shaped sheet of nonwoven fabric, to the sheet substrate 11. In the bottom member attaching step, the bottom member 21 is fixed (for example, fixed with an adhesive) to the lower surface of the sheet substrate 11 so that the bottom openings 19 of the plurality of storage holes 16 of the sheet substrate 11 are closed by one bottom member 21.

[0047] In the carrier tape 20 configured as described above, the bottom surface of the storage recess 22 is made of nonwoven fabric (bottom surface member 21) and has breathability, so that when storing the component EP in the storage recess 22 or when removing the component EP from the storage recess 22, the component EP can be sucked from the bottom surface member 21 side (below) by a vacuum ejector or the like. Therefore, even if the component EP has weak magnetism, the posture of the component EP can be stabilized when storing or removing the component EP by sucking the component EP from the bottom surface member 21 side.

[0048] Furthermore, when storing the part EP in the storage recess 22 or removing the part EP from the storage recess 22, the part EP can be sucked from the bottom member 21 side by a vacuum ejector or the like, so there is no need to provide a bottom hole (suction port) for sucking the part EP in the bottom surface of the storage recess 22. Therefore, even if it is difficult to provide a bottom hole in the bottom surface of the storage recess 22, the posture of the part EP can be stabilized when storing or removing the part EP by sucking the part EP from the bottom member 21 side.

[0049] Thus, according to this embodiment, a carrier tape 20 can be provided that can stabilize the posture of the component EP when storing or removing the component EP, even in cases where the component EP has weak magnetism or where it is difficult to provide a bottom hole.

[0050] Furthermore, since there is no need to provide a bottom hole in the bottom surface of the storage recess 22, it is possible to prevent foreign matter from entering the storage space 23 through the bottom hole.

[0051] (Third embodiment) Next, a third embodiment of the present invention will be described with reference to the drawings. The carrier tape 30 of this embodiment differs from the first embodiment in that a single strip-shaped bottom member 31 covers the lower openings 19 of the plurality of storage holes 16. Note that the same components as those of the first embodiment are designated by the same reference numerals and their description will be omitted.

[0052] Fig. 5 is a plan view showing a carrier tape according to a third embodiment of the present invention. Fig. 6 is a cross-sectional view taken along the line VI-VI in Fig. 5. In Fig. 5 and Fig. 6, the cover tape is shown by a two-dot chain line.

[0053] 5 and 6, a carrier tape 30 according to a third embodiment of the present invention is a member for storing a plurality of components EP (see FIGS. 9 and 10), and is a substantially strip-shaped member formed long in the conveyance direction (X direction). The carrier tape 30 includes a strip-shaped sheet substrate 11 extending in a predetermined direction (X direction), and a strip-shaped bottom member (nonwoven fabric) 31 fixed to the lower surface of the sheet substrate 11. A storage recess 32 recessed from top to bottom is formed in the carrier tape 30.

[0054] The storage recess 32 is formed to be recessed downward from the upper surface of the sheet substrate 11 of the carrier tape 30, and defines an internal storage space 33 for storing the component EP. The size of the storage recess 32 is large enough to store the component EP. In other words, the carrier tape 30 has a storage recess 32 that can store the component EP. The carrier tape 30 becomes a tape package by storing the component EP in the storage space 33 of the storage recess 32 and sealing the upper opening 15 above the storage recess 32 with a cover tape CT.

[0055] The bottom member 31 is a sheet-like member made of breathable nonwoven fabric, and is fixed to the lower surface of the sheet substrate 11 to close the lower openings 19 of the storage holes 16. In this embodiment, a strip-like bottom member 31 is provided that is long in the longitudinal direction so that one bottom member 31 closes the lower openings 19 of multiple storage holes 16. The bottom member 31 has multiple regions (bottom surfaces) 31a that are exposed within the lower openings 19 of the multiple storage holes 16 of the sheet substrate 11. These multiple regions 31a function as the bottom surfaces of the storage recesses 32 and define the lower part of the storage space 33. That is, the storage recesses 32 of this embodiment are constituted by the upper opening 15, the peripheral wall 18 of the storage holes 16, and a partial region 31a of the bottom member 31, and the bottom surface of the storage recesses 32 (the partial region 31a of the bottom member 31) is made of nonwoven fabric. In order to prevent foreign matter from entering, it is preferable that the plurality of regions 31a of the bottom member 31 are not provided with openings such as suction ports for sucking the components EP in the storage recess 32 from the outside.

[0056] The material and air permeability of the nonwoven fabric that constitutes the bottom member 21 are the same as those of the nonwoven fabric that constitutes the bottom member 12 of the first embodiment, and therefore a description thereof will be omitted.

[0057] The length of the bottom surface member 31 in the longitudinal direction is set to a length that allows it to cover the lower openings 19 of the multiple storage holes 16 in the sheet substrate 11. The multiple storage holes 16 means at least two or more storage holes 16, and may be all of the storage holes 16 provided in the sheet substrate 11, or may be a predetermined number of adjacent storage holes 16 among the storage holes 16 provided in the sheet substrate 11. That is, the carrier tape 30 may be provided with one bottom surface member 31 that covers the lower openings 19 of all of the storage holes 16, or multiple bottom surface members 31 that cover the lower openings 19 of a predetermined number (plurality) of adjacent storage holes 16 may be provided adjacent to each other in the longitudinal direction. From the viewpoint of ease of manufacturing, it is preferable that the carrier tape 30 be provided with one bottom surface member 31 that covers the lower openings 19 of all of the storage holes 16. Furthermore, the length of the bottom surface member 31 in the width direction is set to be approximately the same as the length of the sheet substrate 11 in the width direction. That is, the bottom surface member 31 is provided across the entire lower surface of the sheet substrate 11. In addition, openings corresponding to the feed holes 17 may be provided in the bottom surface member 31 at positions corresponding to the feed holes 17 of the sheet substrate 11 .

[0058] As with the bottom surface member 12 of the first embodiment, it is preferable that the bottom surface member 31 is made conductive from the viewpoint of suppressing the generation of static electricity (preventing charging).

[0059] Next, a method for manufacturing the carrier tape 30 will be described.

[0060] The manufacturing method of the carrier tape 30 includes a storage hole forming step and a bottom member attaching step.

[0061] The storage hole forming step is a step of forming storage holes 16 in the strip-shaped sheet base material 11. In the storage hole forming step, for example, the sheet base material 11 is placed between a male mold that forms the storage holes 16 and a female mold that receives the male mold, and the male mold and the female mold are pressed together to punch out the storage holes 16 and form the storage holes 16 that penetrate the sheet base material 11.

[0062] The bottom member attaching step is a step of attaching a bottom member 31, which is a strip-shaped sheet of nonwoven fabric, to the sheet substrate 11. In the bottom member attaching step, one or more bottom members 31 are fixed (for example, fixed with an adhesive) to the entire lower surface of the sheet substrate 11. As a result, the bottom openings 19 of the multiple storage holes 16 in the sheet substrate 11 are closed by the bottom members 31.

[0063] In the carrier tape 30 configured as described above, the bottom surface of the storage recess 32 is made of nonwoven fabric (bottom surface member 31) and has breathability, so that when storing or removing the component EP in the storage recess 32, the component EP can be sucked from the bottom surface member 31 side (below) by a vacuum ejector or the like. Therefore, even if the component EP has weak magnetism, the position of the component EP can be stabilized when storing or removing the component EP by sucking the component EP from the bottom surface member 31 side.

[0064] Furthermore, when storing the part EP in the storage recess 32 or removing the part EP from the storage recess 32, the part EP can be sucked from the bottom member 31 side by a vacuum ejector or the like, so there is no need to provide a bottom hole (suction port) for sucking the part EP in the bottom surface of the storage recess 32. Therefore, even if it is difficult to provide a bottom hole in the bottom surface of the storage recess 32, the position of the part EP can be stabilized when storing or removing the part EP by sucking the part EP from the bottom member 31 side.

[0065] Thus, according to this embodiment, a carrier tape 30 can be provided that can stabilize the posture of the component EP when storing or removing the component EP, even in cases where the component EP has weak magnetism or where it is difficult to provide a bottom hole.

[0066] Furthermore, since there is no need to provide a bottom hole in the bottom surface of the storage recess 32, it is possible to prevent foreign matter from entering the storage space 14 through the bottom hole.

[0067] (Fourth embodiment) Next, a fourth embodiment of the present invention will be described with reference to the drawings. The carrier tape 40 of this embodiment differs from the first embodiment in that the entire carrier tape 40 is made of nonwoven fabric. Note that the same components as those in the first embodiment are designated by the same reference numerals and their description will be omitted.

[0068] Fig. 7 is a plan view showing a carrier tape according to a fourth embodiment of the present invention. Fig. 8 is a cross-sectional view taken along the line VIII-VIII in Fig. 7. In Fig. 7 and Fig. 8, the cover tape is shown by a two-dot chain line.

[0069] 7 and 8, a carrier tape 40 according to a fourth embodiment of the present invention is a member for storing a plurality of components EP (see FIGS. 9 and 10), and is a substantially strip-shaped member formed long in the conveyance direction (X direction). The carrier tape 40 is formed of a strip-shaped nonwoven fabric sheet substrate (nonwoven fabric) 41 extending in a predetermined direction (X direction). That is, the entire carrier tape 40 of this embodiment is made of nonwoven fabric. The carrier tape 40 has a storage recess 42 recessed from top to bottom.

[0070] The sheet substrate 41 is a sheet-like member made of breathable nonwoven fabric. The material of the nonwoven fabric constituting the sheet substrate 41 is not particularly limited, but examples thereof include nonwoven fabrics made of one or more of synthetic fibers made of synthetic resins such as polypropylene (PP), polyethylene (PE), and polyester (PET), polylactic acid (PLA) fibers, acrylic fibers, vinylon, aramid fibers, rayon (recycled fibers), nylon, cotton, hemp, pulp, silk, wool, bamboo, mineral fibers, and glass fibers. The method for forming the nonwoven fabric is not particularly limited, but examples thereof include a dry method, a wet method, a meltblown method, and a spunbond method. Among these, the spunbond method, which directly stacks long fibers, is preferred from the viewpoint of suppressing dust generation. In particular, a spunbond nonwoven fabric made of one or more of synthetic fibers made of synthetic resins such as polypropylene (PP), polyethylene (PE), and polyester (PET), and polylactic acid (PLA) fibers is more preferred. The width (length in the width direction) of the sheet substrate 41 is not particularly limited, and may be 4 mm, 8 mm, 12 mm, 16 mm, 24 mm, or the like.

[0071] The air permeability of the nonwoven fabric constituting the sheet substrate 41 (particularly the portion constituting the bottom surface 46 described later) is 1 cm 3 / (cm 2 ·s) over 800cm 3 / (cm 2 It is preferable that the air permeability of the nonwoven fabric constituting the sheet substrate 41 is 1 cm 3 / (cm 2 If the air permeability of the nonwoven fabric constituting the sheet substrate 41 is set to 800 cm 3 / (cm 2 If the air permeability is larger than s), the part EP may become entangled in the fibers of the nonwoven fabric that constitutes the sheet substrate 41, and foreign matter may pass between the fibers of the nonwoven fabric that constitutes the sheet substrate 41 and enter the storage space 43 described below. The air permeability of the nonwoven fabric that constitutes the sheet substrate 41 is measured based on JIS L 1096 Method A, which will be described later.

[0072] It is preferable to impart electrical conductivity to the sheet substrate 41 in order to suppress the generation of static electricity (to prevent charging). The method of imparting electrical conductivity to the sheet substrate 41 is not particularly limited, but examples include mixing an electrically conductive material into the materials before forming the sheet-like nonwoven fabric that constitutes the sheet substrate 41, coating the surface of the formed sheet-like nonwoven fabric with an electrically conductive material, and laminating an electrically conductive sheet to the sheet-like nonwoven fabric. If static electricity is generated when peeling the cover tape CT from the carrier tape 40 to remove the component EP, the generated static electricity may move the component EP, potentially resulting in a pickup error. However, by imparting electrical conductivity to the sheet substrate 41, the generation of static electricity can be suppressed, thereby reducing pickup errors.

[0073] The sheet substrate 41 has storage recesses 42 recessed downward from the upper surface formed at a predetermined pitch (interval) in the longitudinal direction. The storage recesses 42 are formed, for example, by press working. Inside the storage recesses 42, storage spaces 43 for storing the components EP are defined. The storage recesses 42 are large enough to store the components EP. That is, the carrier tape 40 has storage recesses 42 capable of storing the components EP. The carrier tape 40 becomes a tape package by storing the components EP in the storage spaces 43 of the storage recesses 42 and sealing the upper openings 44 above the storage recesses 42 with the cover tape CT. The tape package can be used to store, transport, and smoothly supply the components EP to a mounting machine that mounts the components EP on a board.

[0074] The storage recess 42 has an upper opening 44 that opens upward on the upper surface side of the sheet substrate 41, a peripheral wall 45 that extends continuously downward from the upper opening 44, and a bottom surface 46. The peripheral wall 45 of the storage recess 42 defines the sides of the storage space 43. The bottom surface 46 of the storage recess 42 defines the lower side of the storage space 43. In other words, the bottom surface 46 of the storage recess 42 is made of nonwoven fabric. From the viewpoint of preventing foreign matter from entering, it is preferable that the bottom surface 46 of the storage recess 42 does not have an opening such as a suction port for sucking the component EP in the storage recess 42 from the outside. In this embodiment, the shape of the upper opening 44, the cross-sectional shape of the peripheral wall 45, and the shape of the bottom surface 46 are substantially rectangular, but these shapes are not limited to this and can be formed into any desired shape to match the shape of the component EP.

[0075] Furthermore, in the sheet base material 41 of this embodiment, a plurality of feed holes 17 are formed at a predetermined pitch (interval) in the longitudinal direction. The shape and interval of the feed holes 17 are not particularly limited, and are formed to suit the feed mechanism of a mounting machine or the like. The feed holes 17 may also be formed on both sides in the width direction of the carrier tape 40 along two sides extending in the longitudinal direction of the carrier tape 40.

[0076] Next, a method for manufacturing the carrier tape 40 will be described.

[0077] The manufacturing method of the carrier tape 40 includes a step of forming the storage recesses. Note that the manufacturing method of the carrier tape 40 may also include a step of punching feed holes in addition to the step of forming the storage recesses.

[0078] The storage recess forming step is a step of forming a storage recess 42 in a nonwoven fabric sheet substrate 41. In the storage recess forming step, for example, the sheet substrate 41 is placed between a male mold that forms the storage recess 42 and a female mold that receives the male mold, and the male mold and the female mold are pressed together to form the storage recess 42.

[0079] The feed hole punching process is a process of punching feed holes 17 in the sheet substrate 41. In the feed hole punching process, for example, the sheet substrate 41 is placed between a punch provided in an upper die and a punch receptacle provided in a lower die so as to correspond to the punch, and the upper die is moved relatively close to the lower die to punch out the feed holes 17. The feed hole punching process may be performed before the storage recess forming process, after the storage recess forming process, or simultaneously with the storage recess forming process.

[0080] In the carrier tape 40 configured as described above, the bottom surface 46 of the storage recess 42 is made of nonwoven fabric and has breathability, so that when storing the component EP in the storage recess 42 or when removing the component EP from the storage recess 42, the component EP can be sucked from the bottom surface 46 side (below) by a vacuum ejector or the like. Therefore, even if the component EP has weak magnetism, the position of the component EP can be stabilized when storing or removing the component EP by sucking the component EP from the bottom surface 46 side.

[0081] Furthermore, when storing the part EP in the storage recess 42 or removing the part EP from the storage recess 42, the part EP can be sucked from the bottom surface 46 side by a vacuum ejector or the like, so there is no need to provide a bottom hole (suction port) for sucking the part EP in the bottom surface 46 of the storage recess 42. Therefore, even if it is difficult to provide a bottom hole, the position of the part EP can be stabilized when storing or removing it by sucking the part EP from the bottom surface 46 side.

[0082] Thus, according to this embodiment, a carrier tape 40 can be provided that can stabilize the posture of the component EP when storing or removing the component EP, even in cases where the component EP has weak magnetism or where it is difficult to provide a bottom hole.

[0083] Furthermore, since there is no need to provide a bottom hole in the storage recess 42, it is possible to prevent foreign matter from entering the storage space 43 through the bottom hole.

[0084] Although the present invention has been described above based on the above embodiment, the present invention is not limited to the content of the above embodiment, and can be modified as appropriate without departing from the scope of the present invention. In other words, all other embodiments, examples, operational techniques, etc. made by those skilled in the art based on this embodiment are naturally included in the scope of the present invention. [Example]

[0085] The present embodiment will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to the following examples.

[0086] (Examples 1 to 5 and Comparative Examples 1 to 2) Carrier tapes were produced for Examples 1 to 5 and Comparative Examples 1 and 2. As shown in Table 1, Examples 1 to 5 had an air permeability of 1 to 800 (cm 3 / (cm 2 The carrier tape of Comparative Example 1 is made entirely of resin (polystyrene), and has zero air permeability, as shown in Table 1. The carrier tape of Comparative Example 2 is made entirely of resin (polystyrene), and has zero air permeability, as shown in Table 1. The carrier tape of Comparative Example 3 is made entirely of resin (polystyrene), and has zero air permeability, as shown in Table 1. The carrier tape of Comparative Example 4 is made entirely of resin (polystyrene), and has zero air permeability, as shown in Table 1. The carrier tape of Comparative Example 5 is made entirely of resin (polystyrene), and has zero air permeability, as shown in Table 1. The carrier tape of Comparative Example 6 is made entirely of resin (polystyrene), and has zero air permeability, as shown in Table 1. The carrier tape of Comparative Example 7 is made entirely of resin (polystyrene), and has zero air permeability, as shown in Table 1. The carrier tape of Comparative Example 8 is made entirely of resin (polystyrene), and has zero air permeability, as shown in Table 1 3 / (cm 2 ·s)) is a carrier tape made entirely of nonwoven fabric with no bottom holes, made using the nonwoven fabric of

[0087] A chip (component EP) of "0402 size (L×W×T: 0.4 mm×0.2 mm×0.2 mm)" was stored in each of the carrier tapes of Examples 1 to 5 and Comparative Examples 1 and 2, and the following two tests (first suction test and second suction test) were carried out. Evaluations were then made based on the test results.

[0088] Fig. 9 is an explanatory diagram of the first suction test, and Fig. 10 is an explanatory diagram of the second suction test. Note that the outline arrows in Fig. 9 and Fig. 10 indicate the suction direction.

[0089] (First suction test) The first suction test was a test to determine whether or not it was possible to pick up a chip from a carrier tape. In the first suction test, as shown in Fig. 9, the opening (top opening) 3 of the storage recess 2 of the carrier tape 1 was facing upward, and the chip in the storage recess 2 was sucked upward using a vacuum ejector 100. Then, evaluation was performed based on the following criteria. 〇: Picked up successfully. ×: Unable to pick up (including cases where the tip was entangled in the fibers of the nonwoven fabric).

[0090] (Second suction test) The second suction test was a test to determine whether or not suction from the bottom side could prevent the chip from popping out. In the second suction test, as shown in Fig. 10, the opening (top opening) 3 of the storage recess 2 of the carrier tape 1 was facing downward, and the chip was sucked upward from the bottom side using a vacuum ejector 100. Then, evaluation was performed based on the following criteria. O: The chip did not fall. ×: The chips fell off, or did not fall off but were entangled in the fibers of the nonwoven fabric.

[0091] (comprehensive evaluation) The overall evaluation was based on the following criteria: Good: The results of both the first suction test and the second suction test were good. ×: The result of at least one of the first suction test and the second suction test is "×".

[0092] The results obtained are shown in Table 1.

[0093] [Table 1]

[0094] In Comparative Example 1, the tip was unable to be sucked and fell in the second suction test. In Comparative Example 2, the tip became entangled in the fibers of the nonwoven fabric in both the first and second suction tests.

[0095] As can be seen from Table 1, the present disclosure confirms that it is possible to provide a carrier tape that can stabilize the posture of components when storing or removing them, regardless of whether the components are weakly magnetic or it is difficult to provide a bottom hole. [Explanation of symbols]

[0096] 10, 20, 30, 40: Carrier tape 12, 21, 31: Bottom material (non-woven fabric) 12a, 21a, 31a: Area (bottom) 13, 22, 32, 42: Storage recess 41: Sheet substrate (nonwoven fabric) 46: Bottom

Claims

1. A carrier tape having a storage recess capable of storing components, At least the bottom surface of the storage recess is made of nonwoven fabric. A carrier tape characterized by:

2. The entire product is made of nonwoven fabric.

2. The carrier tape according to claim 1.

3. The air permeability of the nonwoven fabric measured based on JIS L 1096 A method is 1 cm ３ / (cm ２ ・s) or more 800cm ３ / (cm ２ ・s) or less 3. The carrier tape according to claim 1 or 2.

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