TW201404692A - Carrier tape for receiving electronic component, method of manufacturing carrier tape for receiving electronic component, and package - Google Patents

Abstract

A carrier tape for receiving electronic component according to the present invention is a carrier tape made of a resin in which a belt-like sheet and a plurality of concave portions provided along a longitudinal direction of the belt-like sheet are provided. The plurality of concave portions are formed on a first surface of the belt-like sheet and a second surface of the belt-like sheet opposite to the first surface is substantially flat. Corner portions of the plurality of concave portions are rounded in a curvature radius of 0.2 mm or less. Further, the present invention provides a method of manufacturing the carrier tape for receiving electronic component, and a package.

Description

Transporting belt for electronic component storage, manufacturing method of electronic component storage conveyor belt, and package body

The present invention relates to a conveyor belt for electronic component storage, a method of manufacturing an electronic component storage conveyor belt, and a package.

In general, as a package for accommodating electronic components (especially wafer resistors, wafer LEDs, wafer chips, and other very small wafer components), electronic components are sealed with a top cover tape (hereinafter simply referred to as "cover tape"). A package for a storage belt (hereinafter simply referred to as a "conveyor belt"). A punching conveyance belt (for example, refer to Patent Document 1) formed as follows is used as a conveyance belt: after punching a part of the strip-shaped sheet, a bottom tape is attached to the bottom surface of the sheet to form a concave shape. Part storage part (recessed hole). In addition, a press conveyor belt in which a part of the strip-shaped sheet is formed into a concave hole by compression processing is used (for example, refer to Patent Document 2). Further, an embossed transport belt in which a concave hole is formed in a part of the strip-shaped sheet by a forming process (pressure forming, vacuum drum forming, press forming, or the like) is used (for example, refer to Patent Document 3).

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. Hei 10-218281

[Patent Document 2] Japanese Patent No. 3751214

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2011-225257

As shown in FIG. 6, FIG. 7, and FIG. 8, the punching conveyance belt and the press conveyance belt mainly use a paper sheet base material as a sheet base material. These paper conveyor belts have the following problems when supplying electronic parts to a surface mounting machine: due to the paper powder generated by the sheet itself, the welding of the electronic parts is poor and the electronic parts are defective. The adsorption nozzle is clogged. Further, the size of the recessed hole is changed by the raising and the moisture absorption in the recessed hole, and the charging of the static electricity generated when the covering tape is peeled off during mounting causes a problem that the electronic component suction nozzle is liable to pick up errors.

Further, in the punching belt, the thickness of the sheet (the same depth as the recessed hole) is usually changed in accordance with the height of the electronic component to be housed. Therefore, in the punching conveyance belt in the case where the electronic component having a small height is accommodated in the recessed hole, it is necessary to reduce the thickness of the sheet. At this time, when the electronic component is housed in the recessed hole to cover the tape sealing recessed hole (taping, hereinafter referred to simply as "sticking"), or when the electronic component is mounted, the sprocket is transported by the punching hole. In the case of belting, since the punching of the punching conveyance belt is deformed due to insufficient sheet strength, a conveyance failure occurs. As a result, the storage stability of the electronic component at the time of sticking is caused, and the problem of picking up the electronic component at the time of mounting is caused. Further, since the bottom surface of the sheet must be attached with the bottom tape, the cost of material purchase and processing increases, resulting in a high cost problem.

On the other hand, the embossed carrier tape shown in Figs. 9, 10, and 11 has a projecting embossing on the back side of the sheet. Therefore, in the case where the embossed conveyance belt is used in combination with the punching conveyance belt and the press conveyance belt, it is necessary to perform modification and replacement of the taping machine and the surface mounter, which requires a large amount of cost. Further, when the embossed transport belt is wound up to the reel and conveyed, the deformation of the component accommodating portion and the winding of the embossed transport belt are caused by the application of the load to the protruding embossing on the back side of the sheet. Failure, causing problems with winding slack. Further, after the affixing, the back side of the sheet of the embossed transport belt to be wound is wound when the embossed transport belt is wound around the reel so that the back side of the embossed transport belt faces the reel The protrusions press the cover tape on the inner side of the recessed portion of the wound embossed conveyor belt, resulting in scratches on the cover tape and breakage of the electronic components.

Further, in the method of manufacturing such a conveyor belt, the manufacture of the sheet of the conveyor belt and the processing of the recessed holes of the conveyor belt are different steps. That is, the processing of the recessed holes is usually performed by placing a strip-shaped sheet having a slit of a predetermined thickness, width, and length into the recessed hole processing device, and punching, compressing, or forming a part of the sheet (pressure Forming, vacuum drum forming, press forming, etc.). Furthermore, in the manufacture of the punching conveyance belt, after the processing of the recessed holes, the step of attaching the bottom tape to the bottom surface of the sheet must also be performed. Therefore, it is necessary to prepare a strip-shaped sheet having a desired thickness, width, and length of the slit and a bottom tape in advance. As a result, material costs and processing costs are increased, resulting in high cost problems.

In order to solve the conventional problems, an object of the present invention is to provide a conveyor belt for electronic component storage, a method for manufacturing the same, and a package body, which have improved stability in sealing and surface mounting, can be cleanly provided, and are productive. Upgrade, with significant price competitiveness.

The above object is achieved by the present invention (1) to (13) below.

(1) A conveyor belt for electronic component storage, which is made of a resin, has a belt-shaped sheet, and a plurality of concave portions arranged along a longitudinal direction of the belt-shaped sheet, wherein the belt-shaped sheet has a first surface and a second surface opposite to the first surface; the plurality of concave portions are formed on the first surface of the strip-shaped sheet; and the second surface of the strip-shaped sheet is substantially flat; The ends of the plurality of concave portions are curved with a radius of curvature of 0.2 mm or less.

(2) The transporting belt for electronic component storage according to (1), wherein the depth of each of the plurality of concave portions is A (mm), and the thickness of the strip-shaped sheet at the bottom of the concave portion is B (mm), the concave portion When the thickness of the strip-shaped sheet other than the portion is C (mm), it substantially satisfies A + B = C.

(3) The transporting belt for electronic component storage according to (1) or (2), wherein the depth of each of the plurality of concave portions is A (mm), and the thickness of the strip-shaped sheet at the bottom of the concave portion is B (mm) When the thickness of the strip-shaped sheet other than the concave portion is C (mm), -0.1 < C - (A + B) < 0.1 is satisfied.

(4) The electronic component storage conveyor belt according to any one of (1) to (3), wherein the conveyor belt is wound around the core material so that the second surface faces the core material. The core material has a diameter of 5 to 300 mm.

(5) The method of manufacturing the electronic component storage conveyance belt according to any one of (1) to (4), characterized in that the film forming step is performed by extrusion molding The strip sheet was produced by the method.

(6) The method of manufacturing the electronic component storage conveyance belt according to (5), further comprising: a molding step of forming the plurality of concave portions on the first surface of the strip-shaped sheet after the film forming step.

(7) The method for producing a conveyor belt for storing an electronic component according to (6), wherein the molding step is performed using a mold having a projection for molding the plurality of recesses.

(8) The method of manufacturing the transporting belt for electronic component storage according to (7), wherein the forming step is performed by using a roll-shaped mold, and one or more outer peripheral surfaces are formed to form the plurality of concave portions. Protrusions.

The manufacturing method of the electronic component storage conveyance belt of any one of (6)- (8) which comprises the step of planarizing the 2nd surface of the strip-shaped sheet.

(10) The method of manufacturing a conveyor belt for storing an electronic component according to (9), wherein the molding step is performed using a contact roller that planarizes the second surface of the strip-shaped sheet.

(11) The method for producing an electronic component storage conveyance belt according to any one of (6) to (10), further comprising: a cooling step of cooling the strip-shaped sheet after the forming step.

(12) The method of manufacturing the electronic component storage conveyance belt according to (11), wherein the cooling step is performed using a cooling drum.

(13) A package comprising: the electronic component storage conveyance belt according to any one of (1) to (4); and a top cover tape in a state in which the electronic component is housed in the plurality of recesses; The opening of the plurality of recesses is sealed.

According to the present invention, it is possible to provide a transport belt for electronic component storage, a method for manufacturing the same, and a package body, which can improve the stability of sealing and surface mounting, can be cleanly provided, and improve productivity, and has a remarkable excellent price. Competitiveness.

1‧‧‧Transportation belt

10‧‧‧Sheet

11‧‧‧ Punch

12‧‧‧ recess

13‧‧‧2nd

14‧‧‧ End

15‧‧‧ first side

18‧‧‧Departure

20‧‧‧ Cover tape

30‧‧‧Bottom tape

40‧‧‧Electronic parts

50‧‧‧punching conveyor belt

70‧‧‧embossed conveyor belt

100‧‧‧T mould

110‧‧‧Contact roller

120‧‧‧Cooling roller

130‧‧‧ Rear cooling drum

140‧‧‧ Rear cooling drum

150‧‧‧ molten resin

160‧‧‧Sheet substrate

161‧‧‧ recess

162‧‧‧2nd

170‧‧‧Contact roller

180‧‧‧Contact roller

200‧‧‧Forming mould

300‧‧‧flat seamless belt

310‧‧‧ Seamless belt forming the mold

Fig. 1 is a partial perspective view showing a first embodiment of a conveyor belt according to the present invention.

Fig. 2 is a cross-sectional view taken along line A-A of Fig. 1.

Fig. 3 is a cross-sectional view taken along line B-B of Fig. 1.

Fig. 4 is a perspective view showing a process of a first embodiment of the manufacturing method of the present invention.

Fig. 5 is a view as seen from the direction C of Fig. 4;

Fig. 6 is a partial perspective view showing an embodiment of a conventional punching conveyance belt.

Fig. 7 is a cross-sectional view taken along line D-D of Fig. 6.

Fig. 8 is a cross-sectional view taken along line E-E of Fig. 6.

Fig. 9 is a partial perspective view showing an embodiment of a conventional embossed conveyor belt.

Fig. 10 is a cross-sectional view taken along line F-F of Fig. 9.

Fig. 11 is a cross-sectional view taken along line G-G of Fig. 9.

Fig. 12 is a partial perspective view showing a second embodiment of the conveyor belt of the present invention.

Fig. 13 is a cross-sectional view taken along line H-H of Fig. 12.

Fig. 14 is a cross-sectional view taken along line J-J of Fig. 12.

Fig. 15 is a partial perspective view showing a third embodiment of the conveyor belt of the present invention.

Fig. 16 is a cross-sectional view taken along line K-K of Fig. 15.

Fig. 17 is a cross-sectional view taken along line L-L of Fig. 15.

Fig. 18 is a schematic view showing a process of a second embodiment of the manufacturing method of the present invention.

Fig. 19 is a schematic view showing a process of a third embodiment of the manufacturing method of the present invention.

Fig. 20 is a schematic view showing a process of a fourth embodiment of the manufacturing method of the present invention.

Fig. 21 is a schematic view showing a process of a fifth embodiment of the manufacturing method of the present invention.

Fig. 22 is a schematic view showing a process of a sixth embodiment of the manufacturing method of the present invention.

Fig. 23 is a schematic view showing a process of a seventh embodiment of the manufacturing method of the present invention.

Fig. 24 is a schematic view showing a process of an eighth embodiment of the manufacturing method of the present invention.

Fig. 25 is a schematic view showing a process of a ninth embodiment of the manufacturing method of the present invention.

Fig. 26 is a schematic view showing a process of a tenth embodiment of the manufacturing method of the present invention.

Fig. 27 is a schematic view showing a process of an eleventh embodiment of the manufacturing method of the present invention.

Fig. 28 is a schematic view showing a process of a twelfth embodiment of the manufacturing method of the present invention.

Fig. 29 is a schematic view showing a process of a thirteenth embodiment of the manufacturing method of the present invention; Figure.

Fig. 30 is a partial perspective view showing a fourth embodiment of the conveyor belt of the present invention.

Fig. 31 is a cross-sectional view taken along line A-A of Fig. 30.

32] Fig. 32 is a cross-sectional view taken along line B-B of Fig. 30.

Fig. 33 is a partial perspective view showing a fourth embodiment of the conveyor belt of the present invention.

Fig. 34 is a cross-sectional view taken along line E-E of Fig. 33.

Fig. 35 is a cross-sectional view taken along line H-H of Fig. 33.

Figure 36 is a partial plan view of the conveyor belt of Figure 33.

Fig. 37 is a partial plan view showing a fifth embodiment of the conveyor belt of the present invention.

Fig. 38 is a partial plan view showing a sixth embodiment of the conveyor belt of the present invention.

The electronic component storage conveyance belt of the present invention is a resin-made electronic component storage conveyance belt, and has a belt-shaped sheet and a plurality of concave portions arranged along the longitudinal direction of the belt-shaped sheet, wherein the concave portion is formed in the concave portion The first surface of the strip-shaped sheet is substantially flat on the second surface of the strip-shaped sheet opposite to the first surface.

In other words, the electronic component storage conveyor belt has a bottomed recessed portion that is open on the first surface of the strip-shaped sheet, and corresponds to the bottom surface of the recessed portion and the second surface of the strip-shaped sheet in the vicinity of the outer peripheral portion thereof. It consists of no faces.

In the method for producing an electronic component storage conveyor belt according to the present invention, a film forming step is employed, and a sheet of the electronic component storage conveyor belt is produced by a extrusion molding method.

The package according to the present invention includes: the electronic component storage transport belt; and a distal end cover tape that seals the opening of the concave portion in a state in which the electronic component is housed in the concave portion.

Hereinafter, the electronic component storage conveyor belt (hereinafter also referred to simply as "transport belt") of the present invention will be described in detail based on the embodiment shown in the drawings.

<First embodiment>

First, a first embodiment of the conveyor belt of the present invention will be described.

(1) conveyor belt

Fig. 1 is a partial perspective view showing a first embodiment of a conveyor belt and a package of the present invention. In order to show the electronic components housed in the recessed holes of the conveyor belt, a part of any of the cover tapes is removed. In order to more clearly show the inside of the recessed hole, the recessed hole at the front end omits the electronic component. 2 is a cross-sectional view taken along line A-A of FIG. 1, and FIG. 3 is a cross-sectional view taken along line B-B of FIG.

As shown in FIGS. 1 to 3, the electronic component storage conveyance belt 1 of the present invention is a resin-made electronic component storage conveyance belt, and has a belt-shaped sheet 10 and a plurality of concave portions arranged along the longitudinal direction of the belt-shaped sheet 10. 12 is characterized in that the plurality of concave portions 12 are formed on the first surface of the strip-shaped sheet 10, and in the strip-shaped sheet 10, the second surface 13 on the opposite side to the first surface is substantially flat.

The electronic component storage conveyance belt 1 has a plurality of concave portions 12 and is provided in a line along the longitudinal direction of the belt-shaped sheet 10 . The electronic components 40 can be housed in the recesses 12, respectively. Further, as shown in the figure, the perforations 11 may be provided on the strip-shaped sheet 10 at equal intervals.

Further, in the present embodiment, the electronic component 40 has a rectangular shape as a whole, and the shape of the concave portion 12 in which the electronic component 40 is housed is also grown in a square shape corresponding thereto. Therefore, the shape of the recessed portion 12 in a plan view is a rectangular shape. However, the shape of the electronic component 40 to be accommodated may be formed into a polygonal shape such as a triangle, a pentagon or a hexagon, or may be formed into a circular shape or the like.

Further, the inner peripheral surface of the concave portion 12 may be formed with a ridge or a concave strip along the thickness direction of the transport belt 1 in consideration of the pick-up property of the electronic component suction nozzle or the like.

Further, a step may be provided on the bottom surface of the recess 12. In this case, for example, when a terminal or the like is formed on the bottom surface of the electronic component 40, since the terminal can be prevented from coming into contact with the bottom surface of the recessed portion 12, damage to the terminal or the like can be surely prevented when the transport belt 1 is transported.

The electronic component storage conveyance belt 1 of the present invention is made of a resin. By being made of a resin, when the electronic component 40 is supplied to the surface mounter, fine powder such as paper powder is not generated from the transport belt main body, and welding failure of the electronic component 40 or clogging of the electronic component suction nozzle can be prevented. The situation happened. In addition, it is possible to prevent dimensional changes of the concave portion 12 due to fuzzing and moisture absorption in the concave portion 12. Further, it is possible to prevent the charging of static electricity generated when the cover tape 20 is detached from the transport belt 1 when the electronic component 40 is mounted, and the pickup property of the electronic component suction nozzle can be improved. Thereby, the conveyor belt 1 can be cleanly provided, the stability of the sealing and surface mounting can be improved, and the productivity of the conveyor belt 1 can be improved.

Further, the strength of the sheet 10 is improved by making the conveyor belt 1 from a resin. Thereby, even if the thickness of the sheet 10 is reduced in order to accommodate the electronic component 40 having a low height, the punching 11 of the transport belt 1 can be prevented from being deformed when the transport belt 1 is transported during sealing and at the time of mounting. , and the breakage of the conveyor belt 1 and the like. Thereby, the conveyance failure of the conveyance belt 1 can be sufficiently suppressed, and the storage stability of the electronic component 40 at the time of sealing and the pick-up property of the electronic component 40 at the time of mounting can be improved. As a result, the stability of the sealing and surface mounting can be improved, and the productivity of the conveyor belt 1 can be improved.

Further, the concave portion 12 is formed on the first surface of the sheet 10, and the second surface 13 of the sheet 10 opposite to the first surface is substantially flat. In other words, in the second surface 13, the surface corresponding to the bottom of the concave portion 12 and the vicinity of the outer peripheral portion thereof is constituted by a surface having substantially no step. Therefore, the conveyance belt 1 can be used in the same manner as the punching conveyance belt and the press conveyance belt by using a punching conveyor and a sealing machine for a press belt and a mounting machine. In this way, new equipment investment is not required, and price competitiveness can be improved. Further, when the conveyor belt 1 is wound around the drum and conveyed, since the second surface 13 is substantially flat, it is possible to prevent the winding of the conveyor belt 1 from being unsuccessful or loose. Thereby, deformation of the concave portion 12 and damage of the cover tape 20 can be prevented.

Further, with this configuration, the transport belt 1 corresponding to the thinner electronic component can be provided. That is, the depth of the recess 12 can be determined according to the size of the packaged electronic component 40. In other words, when the electronic component 40 is housed in the internal space (concave portion 12) formed between the transport belt 1 and the cover tape 20, in order to protect the electronic component 40 from the transport belt 1 in which the electronic component 40 is stored, it is stored and transported. The impact of the impact, pollution, etc., should be designed to have the recess 12 with a slight gap (eg For example, 0~0.3mm). Therefore, due to the thinning of electronic parts today, in the case of a punching belt, the sheet itself must be thinned. Therefore, there is a possibility that the sheet strength is insufficient, the sheet is broken, and the like. However, the transport belt 1 has a shallower depth of the concave portion 12 even when the electronic component 40 is packaged, and since the thickness of the sheet 10 itself is not required to be thinned, the thinned electronic component can be correspondingly provided with sufficient strength. .

In addition, the resin constituting the conveyor belt 1 is not particularly limited, and examples thereof include polystyrene, polyethylene, polypropylene, polyester (polyethylene terephthalate, etc.), polycarbonate, and poly Various resins (all kinds of thermoplastic resins) of vinyl chloride, polyamine, and polyacetal may be used in combination of two or more kinds of these resins. Further, in order to meet the demand, a conductive filler such as carbon black, graphite or carbon fiber may be blended in the resins. Thereby, the conveyor belt 1 is imparted with conductivity, and charging can be prevented. Therefore, it is possible to prevent the destruction of the electronic component 40 caused by static electricity. Further, various additives such as a foaming agent or a lubricant may be added to the resin in accordance with the demand. Further, a release agent layer made of a lanthanoid resin, a fluorine resin or the like, or a conductive coating film or the like may be formed on the surface of the conveyor belt 1. Thereby, the conveyor belt 1 wound around the reel can be smoothly wound out. Further, the layer structure of the sheet 10 of the transport belt 1 may be a single layer or a plurality of layers satisfying the requirements.

Further, it is assumed that the depth of the concave portion 12 is A (mm), and the thickness of the strip-shaped sheet 10 at the bottom of the concave portion 12 (hereinafter referred to as "thickness at the bottom of the concave portion 12") is B (mm), and the portion other than the concave portion When the thickness of the strip-shaped sheet 10 is C (mm), it is preferable to substantially satisfy A + B = C. In the case where A+B=C is satisfied, it is more preferable to satisfy, for example, -0.1<C-(A+B)<0.1, and more preferably -0.05<C-(A+B)<0.05. By satisfying this formula, the second surface 13 can be made flatter, and when the transport belt 1 is wound around the reel for storage or when the transport belt 1 is transported, the winding failure or winding of the transport belt 1 is prevented. relaxation.

In addition, the depth A of the recess 12 can be determined by the height of the packaged electronic component 40. Assuming that the height of the electronic component 40 is Z (mm), it is preferable to satisfy 0≦A-Z≦0.3, and it is preferable to satisfy 0.05≦A-Z≦0.15. By setting the value of AZ within the preferred range, the storage stability of the electronic component 40 at the time of sealing and the pick-up property of the electronic component 40 at the time of mounting can be improved, and collisions during storage and transportation of the transport belt 1 can be prevented. Damage to the electronic component 40 caused by contamination or the like. Further, the thickness C of the strip-shaped sheet 10 at a portion other than the concave portion is substantially the same as the thickness of the sheet 10 of the transport belt 1. Here, The thickness of C is preferably 0.1 mm or more and 1.0 mm or less, more preferably 0.2 mm or more and 0.5 mm or less. By making the thickness C within the preferred range, the productivity of the conveyor belt 1 is improved. Further, it is possible to prevent the perforation 11 of the transport belt 1 from being deformed, and the transport belt 1 from being broken.

In addition, the size of the recess 12 is determined by the size of the electronic component 40 to be packaged. When the conveyor belt 1 is viewed from above, it is assumed that the short side of the opening of the recess 12 is D (mm), the long side is E (mm), and D ≦ E, the short side of the electronic component 40 is X (mm), and the long side is Y. (mm), and when X ≦ Y, it satisfies 0 < DX ≦ 0.3, 0 < EY ≦ 0.3 is preferable; 0.05 ≦ DX ≦ 0.15, 0.05 ≦ EY ≦ 0.15 is more preferable. By making DX and EY in this preferred range, the storage stability of the electronic component 40 at the time of sealing and the pick-up property of the electronic component 40 at the time of mounting can be improved, and the collision and contamination during storage and transportation of the transport belt 1 can be prevented. Etc., the resulting damage to the electronic component 40.

In addition, the second surface 13 may be wound around the reel (core material) side, and the transport belt 1 may be stored and transported. The diameter of the reel used at this time should be about 5 to 300 mm, more preferably about 30 to 250 mm. Further, the first surface may be wound around the reel 1 on the side of the reel.

Here, as shown in FIG. 2, the electronic component 40 accommodated in the recessed part 12 has a rectangular shape when viewed from a cross section, and the size of the electronic component 40 in a plan view is expressed by Y (mm) × X (mm). It is usually 0.6 mm × 0.5 mm, 0.6 mm × 0.3 mm, and 0.4 mm × 0.2 mm. Further, it is generally considered that an electronic component 40 having a size of 0.3 mm × 0.15 mm and 0.2 mm × 0.1 mm will be used in the future. Therefore, the electronic component 40 in which Y (mm) is about 0.2 to 0.6 mm and X (mm) is about 0.1 to 0.5 mm is accommodated in the recessed portion 12.

Further, the height Z (mm) of the electronic component 40 is usually set to about 0.1 to 0.35 mm.

Further, it is assumed that the diameter φ of the reel wound by the transport belt 1 is F (mm), and when the transport belt 1 is wound around the reel, the transport belt 1 becomes curved. At this time, since the conveyance belt 1 is wound around the reel, the depth A of the concave portion 12 is changed as compared with the state in which the conveyance belt 1 is not wound. Therefore, as a result of the review by the inventor of the present invention, the opening amount side of the recessed portion 12, that is, the side of the cover tape 20 is flat, the amount of change G (mm) of the depth A of the recessed portion 12 can be expressed by the following formula (1). In this case, the amount of change G (mm) reduces the depth A of the recess 12, so the substantial depth of the recess 12 is A-G (mm).

On the other hand, when the conveyance belt 1 is wound to the reel, assuming that the bottom side of the recessed portion 12 is flat, the amount of change H (mm) of the depth A of the recessed portion 12 can be expressed by the following formula (2). In this case, the amount of change H (mm) increases the depth A of the recess 12, so the substantial depth of the recess 12 is A + H (mm).

Then, when the electronic component 40 of the above-described size is housed in the recessed portion 12, when the transport belt 1 is wound around a reel having a diameter of 5 to 300 mm, the above equations (1) and (2) are used to calculate the change. In the case of the amount G and the amount of change H, the amount of change G and the amount of change H are in the range of 2.0 × 10 ^-5 to 1.33 × 10 ^-2 mm and 2.0 × 10 ^-5 to 1.46 × 10 ^-2 mm, respectively.

Further, the amount of change G and the amount of change H are represented by the following cases: the size of the recessed portion 12 is larger than the size of the top surface of the electronic component 40 by 0.05 mm, and the bottom of the recessed portion 12 The thickness is 0.1 mm, and the difference (AZ) between the depth of the recess 12 and the height of the electronic component 40 is 0.15 mm.

Therefore, as described above, by setting the difference (AZ) between the depth of the concave portion 12 and the height of the electronic component 40 to about 0.05 ≦ AZ ≦ 0.15 in the preferred range, the amount of change G and the change are compared with the height difference (AZ). The amount H is a small value. Therefore, even if the transport belt 1 is wound around the reel having the above diameter, it is possible to surely suppress or prevent the electronic component 40 from piercing the cover tape 20 or to cause wrinkles or the like on the cover tape 20. Further, since the winding of the transport belt 1 with respect to the reel is more secure, it is possible to surely prevent the winding failure or the winding slack of the transport belt 1.

Further, the inner end portion 14 of the recessed portion 12 is preferably curved with a curvature radius of 0.2 mm or less. It is preferable to bend with a radius of curvature of 0.1 mm or less. Since the concave portion 12 has such a configuration, even in the case of packaging the thin electronic component 40, the planar portion of the side wall surface perpendicular to the bottom surface of the concave portion 12 can be made large. Thereby, the side wall surface of the recessed portion can be prevented from being enlarged from the bottom portion to the end portion, so that the storage stability of the electronic component 40 can be improved.

(2) Manufacturing method of the conveyor belt

Next, a first embodiment of a method of manufacturing a conveyor belt according to the present invention will be described.

Fig. 4 is a perspective view showing a first embodiment of the process of the method for producing a conveyor belt according to the present invention. Fig. 5 is a view as seen from the direction C of Fig. 4, which is an embodiment of the process of the method of manufacturing the conveyor belt of the present invention.

The method for producing the conveyor belt 1 of the present invention is not particularly limited. It is preferable to include, for example, a film forming step of extruding the molten resin 150 from the T die 100 by extrusion molding to fabricate the sheet substrate 160 constituting the transport belt 1. The thickness of the sheet 10 of the transport belt 1 can be stabilized by the film forming step of the extrusion molding method.

The manufacturing method of the conveyor belt 1 preferably includes a forming step of forming the concave portion 161 on the first surface of the sheet base material 160 after the film forming step. By this step, the sheet substrate 160 is shaped to manufacture the carrier tape 1 of the present invention.

The forming step is not particularly limited, and it is generally preferable to use a mold having a projection on the surface, and for example, a roll-shaped mold such as a forming mold 200 is preferable. By using such a mold, the conveyor belt 1 of the present invention can be efficiently manufactured, and the productivity of the conveyor belt 1 can be improved. The drum-shaped mold is not particularly limited, and can be generally mounted to, for example, the cooling drum 120.

In the forming step, the punching holes 11 may be formed together with the sheet base material 160. The transport belt 1 of the present invention can be suitably used by forming the punched holes 11. Further, the punching hole 11 may be formed after a cooling step to be described later. In this case, the punching mold 11 can be formed by punching the mold.

The manufacturing method of the conveyor belt 1 preferably includes flattening the second surface 162 of the sheet substrate 160. step. By including such a step, the transport belt 1 of the present invention can be manufactured more efficiently. Such a step is not particularly limited and is generally carried out at the same time as the forming step and/or after the forming step. For example, as shown in FIG. 5, the manufacturing method of the conveyance belt 1 may include the step of planarizing the sheet base material 160 by the contact roller 110 and the cooling drum 120 while performing the forming step using the molding die 200. By this step, the conveyor belt 1 of the present invention can be manufactured efficiently and efficiently.

The method of manufacturing the conveyor belt 1 preferably includes a cooling step of cooling the sheet substrate 160. The cooling step, because it is carried out simultaneously with the forming step and/or after the forming step, prevents the formed sheet substrate 160 from being deformed by the residual heat after forming. Such a cooling step is not particularly limited, and can be generally performed, for example, by the cooling drum 120 shown in FIG. Further, in order to more sufficiently cool the sheet substrate 160, a plurality of cooling rolls can be used. The cooling step can be performed, for example, by the rear stage cooling rolls 130 and 140 shown in FIG. The productivity of the conveyor belt 1 of the present invention can be further improved by performing a cooling step using a cooling drum.

(3) Package

Next, a first embodiment of the package of the present invention will be described.

The package of the present invention includes the electronic component storage conveyance belt 1 of the present invention, and a distal end cover tape 20 that seals the opening of the concave portion 12 in a state in which the electronic component 40 is housed in the concave portion 12.

The package of the present invention is not particularly limited, and as shown in FIG. 1, it generally includes the carrier tape 1 of the present invention and a package body covering the tape 20, and the cover tape 20 is housed in the conveyor belt 1 in the electronic component 40. The state of the recess 12 seals the opening of the recess 12.

The conveyor belt 1 and the cover tape 20 are connected by a heat seal. The heat sealing is carried out along the respective edges of the long sides of the cover tape 20 using a sealing machine. Further, the adhesive tape may be connected to the cover tape 20 instead of the heat seal.

In such a package, the cover tape 20 is peeled from the transport belt 1 by pulling the cover tape 20 in the longitudinal direction of the package, and the electronic component 40 can be taken out.

<Second embodiment>

Next, a second embodiment of the conveyor belt of the present invention will be described. Fig. 12 is a partial perspective view showing a second embodiment of the conveyor belt and the package of the present invention. In order to indicate the electronic components housed in the recessed holes of the conveyor belt, the cover tape is partially removed. In order to more clearly show the inside of the recessed hole, the electronic component is omitted from the recessed hole at the front end. 13 is a cross-sectional view taken along line H-H of FIG. 12, and FIG. 14 is a cross-sectional view taken along line J-J of FIG.

The transport belt 1 of the present invention is a resin-made electronic component storage transport belt, and includes a belt-shaped sheet 10 and a plurality of concave portions 12 arranged along the longitudinal direction of the strip-shaped sheet 10. The concave portion 12 is formed on the first surface of the sheet 10, and the second surface 13 of the sheet 10 opposite to the first surface is substantially flat. However, as in the second embodiment, the second surface may be slightly recessed.

<Third embodiment>

Next, a third embodiment of the conveyor belt of the present invention will be described. Fig. 15 is a partial perspective view showing a third embodiment of the conveyor belt and the package of the present invention. In order to indicate the electronic components housed in the recessed holes of the conveyor belt, the cover tape is partially removed. In order to more clearly show the inside of the recessed hole, the electronic component is omitted from the recessed hole at the front end. 16 is a cross-sectional view taken along line K-K of FIG. 15, and FIG. 17 is a cross-sectional view taken along line L-L of FIG.

The conveyor belt 1 of the present invention is a resin-made electronic component storage conveyor belt, and includes a belt-shaped sheet 10 and a plurality of concave portions 12 arranged along the longitudinal direction of the belt-shaped sheet 10. The concave portion 12 is formed on the first surface of the sheet 10, and the second surface 13 of the sheet 10 opposite to the first surface is substantially flat. However, as in the third embodiment, the second surface may be a slightly expanded state.

<Fourth embodiment>

Next, the fourth embodiment of the transport belt according to the present invention will be described focusing on differences from the first embodiment, and the description of the same matters will be omitted. Figure 30 is a partial perspective view showing a fourth embodiment of the conveyor belt and the package of the present invention. In order to indicate the electronic components housed in the recessed holes of the conveyor belt, the cover tape is partially removed. In order to more clearly represent the inside of the recess, the recess from the front end Holes omit electronic parts. 31 is a cross-sectional view taken along line A-A of FIG. 30, and FIG. 32 is a cross-sectional view taken along line B-B of FIG.

Fig. 33 is a partial perspective view showing a fourth embodiment of the conveyor belt of the present invention. Figure 34 is a cross-sectional view taken along line E-E of Figure 33. Figure 35 is a cross-sectional view taken along line H-H of Figure 33. Figure 36 is a partial plan view of the conveyor belt of Figure 33.

As shown in FIG. 30 to FIG. 32, the transport belt 1 of the present embodiment is a resin-made electronic component storage transport belt, and includes a belt-shaped sheet 10; and is disposed along the longitudinal direction of the strip-shaped sheet 10. The plurality of recesses 12. The concave portion 12 is formed on the first surface 15 of the sheet 10, and the second surface 13 on the side opposite to the first surface 15 of the sheet 10 is substantially flat.

As shown in FIGS. 33 to 35, in the transport belt 1, a region between the plurality of concave portions 12 of the first surface 15 (hereinafter referred to as "first region") has a step portion 18. In other words, the first region, as shown in FIGS. 30 and 33, is slightly sunk compared to a region other than the first region (hereinafter referred to as "second region"). According to this configuration, when the transport belt 1 is manufactured, the surface of the strip-shaped sheet 10 in the first region does not protrude beyond the surface of the strip-shaped sheet 10 in the second region. Therefore, when the transport belt 1 is wound around the reel, the cover tape 20 and the transport belt 1 can be prevented from being scratched, and the electronic component 40 is not damaged.

The height difference between the bottom of the step portion 18 and the surface of the strip-shaped sheet 10 of the second region is preferably 0.05 mm or less, more preferably 0.03 mm or less. Since this height difference is extremely small, the first surface 15 can be made to be approximately flat. Therefore, even if the transport belt 1 is wound around the reel, the cover tape 20 and the transport belt 1 are not scratched, and the electronic component 40 is not damaged. Further, such a height difference provides a gap in the first region when the transport belt 1 is manufactured, so that the surface of the strip-shaped sheet 10 of the first region is not more than the surface of the strip-shaped sheet 10 of the second region. protruding. When the conveyor belt 1 is wound up to the reel, the second region and the cover tape 20 are more encrypted due to the bending of the conveyor belt 1 and the gap. Therefore, the airtightness of the recessed portion 12 can be improved when the transport belt 1 is wound up to the reel.

In the transport belt 1, the size of the step portion 18 in plan view is determined by the interval between the recesses 12. In the present embodiment, the step portion 18 is formed to have a predetermined size as shown in FIG. However, it can also The size of the step portion 18 depends on the interval between the concave portions 12, and may be larger than the size of the step portion 18 of Fig. 36 as shown in Fig. 37 (the fifth embodiment). Further, the size of the step portion 18 may be set smaller than the size of the step portion 18 of Fig. 36 as shown in Fig. 38 (the sixth embodiment).

<Other implementations>

Next, another embodiment of the method of manufacturing the conveyor belt of the present invention will be described. The method for manufacturing the transport belt of the present invention is not limited to the first embodiment, and may not include the second stage cooling drums 130 and 140 as shown in FIG. 18, or may be the third embodiment of FIG. As such, only one rear stage cooling drum 130 is included. Further, in the method of manufacturing the transport belt of the present invention, as in the fourth embodiment shown in FIG. 20, the rear stage cooling drum 130 may be provided below the drum-shaped mold 200.

Further, in the method of manufacturing the transport belt of the present invention, as in the fifth embodiment shown in FIG. 21, after the second surface 162 is once planarized by the contact roller 110 and the cooling drum 120, the drum 130 is cooled in the rear stage. The forming of the concave portion 161 is performed by the molding die 200. Further, in the method of manufacturing the transport belt of the present invention, as in the sixth embodiment shown in Fig. 22, the molding die 200 may be used on the side of the contact roller 110 to form the concave portion 161. Further, in the method of manufacturing the transport belt of the present invention, as shown in the seventh to tenth embodiments shown in FIGS. 23 to 26, the flat surface of the second surface 162 can be further raised by including the two contact rollers 110 and 170. Sex.

Further, in the method of manufacturing the transport belt of the present invention, as in the eleventh embodiment shown in Fig. 27, a flat seamless belt 300 may be used in the contact roller 170 to further improve the flatness of the second surface 162. Sex. Further, in the method of manufacturing the transport belt of the present invention, as in the twelfth embodiment shown in Fig. 28, the seamless belt 310 forming the mold may be used for the contact rollers 110 and 170 to form the concave portion 161.

Further, in the method of manufacturing the transport belt of the present invention, as in the thirteenth embodiment shown in Fig. 29, a flat seamless belt 300 may be used for the contact rollers 110, 170, 180, and the cooling drums 120, 130 may be used. The seamless belt 310 forming the mold simultaneously forms the concave portion 161 and planarizes the second surface 162. Further, the contact rollers 110, 170, and 180 and the cooling drum 120 are not disposed at a position of 90 degrees or 180 degrees, but are arranged to face the adjacent contact roller, the cooling roller, or the like, and are movable. The configuration is disposed opposite to the adjacent contact roller and the cooling roller at various angles.

As described above, the present invention has been described in terms of several embodiments, but the present invention is not limited to the embodiments.

1‧‧‧Transportation belt

10‧‧‧Sheet

11‧‧‧ Punch

12‧‧‧ recess

14‧‧‧ End

20‧‧‧ Cover tape

40‧‧‧Electronic parts

Claims (13)

A conveyor belt for electronic component storage, which is made of a resin, has a belt-shaped sheet, and a plurality of concave portions arranged along the longitudinal direction of the belt-shaped sheet, wherein the belt-shaped sheet has the first a surface and a second surface opposite to the first surface; the plurality of recesses being formed on the first surface of the strip-shaped sheet; the second surface of the strip-shaped sheet being substantially flat; and the end of the plurality of recesses Bending with a radius of curvature of 0.2 mm or less. The conveyor belt for electronic component storage according to the first aspect of the invention, wherein the depth of each of the plurality of recesses is A (mm), and the thickness of the strip-shaped sheet at the bottom of the recess is B (mm), the recess When the thickness of the strip-shaped sheet other than the portion is C (mm), it substantially satisfies A + B = C. The conveyor belt for electronic component storage according to claim 1 or 2, wherein the depth of each of the plurality of recesses is A (mm), and the thickness of the strip-shaped sheet at the bottom of the recess is B (mm). When the thickness of the strip-shaped sheet other than the concave portion is C (mm), -0.1 < C - (A + B) < 0.1 is satisfied. The conveyor belt for electronic component storage according to the first or second aspect of the invention, wherein the conveyor belt is wound around the core material so that the second surface faces the core material, and the diameter of the core material is 5~300mm. A method of manufacturing an electronic component storage conveyor belt according to any one of claims 1 to 4, wherein the manufacturing method includes a film forming step The strip-shaped sheet was produced by a molding method. The method for producing an electronic component storage conveyance belt according to claim 5, further comprising: a molding step of forming the plurality of concave portions on the first surface of the strip-shaped sheet after the film forming step. The method of manufacturing a conveyor belt for storing an electronic component according to the sixth aspect of the invention, wherein the molding step is performed by using a mold having a projection for molding the plurality of recesses. The manufacturing method of the electronic component storage conveyance belt of the seventh aspect of the invention, wherein the molding step is performed using a roll-shaped mold, and one or more of the outer peripheral surfaces are formed to form the plurality of concave portions. Protrusions. The method for producing an electronic component storage conveyance belt according to any one of claims 6 to 8, wherein the molding step includes a step of flattening the second surface of the strip-shaped sheet. The manufacturing method of the electronic component storage conveyance belt of the ninth aspect of the invention, wherein the molding step is performed by a contact roller that planarizes the second surface of the strip-shaped sheet. The method for producing an electronic component storage conveyor belt according to any one of claims 6 to 10, further comprising a cooling step of cooling the strip-shaped sheet after the forming step. The method of manufacturing an electronic component storage conveyor belt according to the eleventh aspect of the invention, wherein the cooling step is performed using a cooling drum. A package comprising: the electronic component storage transport belt according to any one of claims 1 to 4; and a top cover tape, wherein the electronic component is housed in the plurality of recesses, and the sealed The opening of the plurality of recesses.