WO2010064385A1 - 微小はんだボールの保存用パッケージ体および保存方法 - Google Patents
微小はんだボールの保存用パッケージ体および保存方法 Download PDFInfo
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- WO2010064385A1 WO2010064385A1 PCT/JP2009/006383 JP2009006383W WO2010064385A1 WO 2010064385 A1 WO2010064385 A1 WO 2010064385A1 JP 2009006383 W JP2009006383 W JP 2009006383W WO 2010064385 A1 WO2010064385 A1 WO 2010064385A1
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- WIPO (PCT)
- Prior art keywords
- container
- solder balls
- package body
- holding member
- storing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
- B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
- B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
- B65D81/2023—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum in a flexible container
- B65D81/203—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum in a flexible container with one or several rigid inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
- B65D77/0406—Rigid containers in preformed flexible containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
- B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
- B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
- B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
- B65D81/266—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing gases, e.g. oxygen absorbers or desiccants
- B65D81/268—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing gases, e.g. oxygen absorbers or desiccants the absorber being enclosed in a small pack, e.g. bag, included in the package
Definitions
- the present invention relates to a storage package body and a storage method suitable for storing solder balls, particularly fine solder balls.
- Multifunctional parts include BGA and CSP, and a large number of electrodes are installed on these multifunctional parts.
- the electrodes and the lands of the printed circuit board are soldered.
- a bare chip having a large number of electrodes is installed inside, and the electrodes are soldered to a substrate of the electronic component.
- solder bumps are formed in advance by attaching solder to the electrodes, and soldering is performed by melting the solder bumps during soldering.
- solder balls are used for forming solder bumps.
- solder bump For forming the solder bump, a method using a solder paste or a method using a solder ball is used. Conventionally, a method using a solder paste having a low cost has been used. However, the bumps to be formed are required to be as small as 30 to 200 ⁇ m, and the bumps made of solder balls are more expensive in terms of cost because the mounting height can be secured. A method using a solder ball having the same diameter as the required bump height has been widely used. In particular, securing the mounting height is important for electrodes for external terminals of BGA and CSP and electrodes for bare chip bonding inside components, and the use of solder balls is indispensable.
- solder balls When mounting solder balls on a large number of electrodes, the solder balls are aligned with the holes in the pallet by placing the solder balls on the pallet with holes smaller in diameter than the solder balls and swinging. Sit in. Then, a solder ball is mounted on the solder ball mounting head. Therefore, when the aspect ratio of the solder ball is large and there is an error in the particle size, mounting on the electrode becomes impossible. In order to ensure a strict amount of solder and to secure a mounting height, it is important that there is no error in the particle size of each solder ball.
- the solder ball which is the subject of the present invention is a spherical solder used for mounting and is used in the mounting method described above.
- the sphericity of the solder ball is 0.95 or more and the particle size is constant. There is no distortion, (2) there is no contamination on the surface, (3) the surface is smooth with few irregularities, (4) the surface oxide film is not thick, and (4) the components of the alloy composition are It is necessary to satisfy the conditions such as being constant.
- the ratio of the surface area of the solder ball to the total amount of solder increases, so that the surface of the solder ball is easily oxidized and yellowing is likely to occur. Yellowing is caused by the solder balls being exposed to the atmosphere and Sn in the solder balls being oxidized by oxygen in the atmosphere. Since the Sn oxide film is yellow, the entire solder ball appears to turn yellow when the oxide film becomes thick.
- solder balls When solder balls are mounted in BGA mounting or the like, the solder balls are aligned on the pallet and mounted together, so it is necessary to check the presence or absence of solder balls with the image recognition device after mounting the solder balls. At this time, if the solder ball is yellowed, an error may occur in the image recognition apparatus. If an error occurs in the image recognition device, the line stops, causing a great hindrance to productivity.
- the oxide film when the surface of the solder ball is covered with an oxide film, when the solder ball is melted, the oxide film remains on the electrode while maintaining the ball shape without breaking, or the oxide film adheres to the electrode and melts. Insufficient solder wetting causes soldering failure.
- Patent Documents 2 to 5 several containers for preventing oxidation and yellowing of lead-free solder balls containing Sn as a main component have been proposed.
- Patent Document 2 In order to prevent the yellowing of the solder balls, a simple method is effective in filling the solder balls into a non-breathable laminate sheet or aluminum sheet and then deaeration and then sealing (Patent Document 2). ). It is also possible to enclose an oxygen scavenger or a hygroscopic agent or a buffer material in the inside.
- Patent Document 3 A method for preventing oxidation of solder balls by creating a space for containing an oxygen scavenger inside the container for storing solder balls having oxygen barrier properties and conductivity and storing the oxygen scavenger in the space is known. (Patent Document 3).
- the oxygen absorber is not housed in the container, but the container resin material contains an antioxidant component or a member containing the antioxidant component is housed in the container together with the solder balls.
- a method is also known (Patent Document 4).
- Patent Document 5 In order to prevent the solder balls from being oxidized, it is also known that the outer lid of the container body is welded with a seal (Patent Document 5). According to this, once the seal is peeled off and opened, oxygen flows in and oxidation starts, so it is necessary to use up after opening. Unused solder balls after opening are oxidized and cannot be used. As a result, poor soldering due to the oxide film can be prevented.
- Patent Document 6 a packaging method for storing metal wiring materials such as wires and ribbons made of metal that is easily oxidized such as copper and solder is also known (Patent Document 6). According to this method, the metal wiring material is wound on a spool and stored in a plastic case, and this is enclosed with a laminate sheet together with an oxygen scavenger.
- JP 2000-335633 A JP 2003-31744 A JP-A-11-105940 JP 2007-230613 A JP 2008-37487 A JP-A-3-289415
- the method of sealing after laminating and deaeration by filling the laminated sheet or aluminum sheet bag the impact remains as it is in an environment that is susceptible to external impact. It is transmitted to the solder balls, and there is a problem that deformation and distortion occur.
- oxygen scavengers, hygroscopic agents, or cushioning materials are enclosed, there is a risk that the fine solder balls will scatter when they are removed.
- a method for preventing oxidation of a solder ball by forming a space for containing an oxygen scavenger inside the solder ball storage container having an oxygen barrier property and conductivity, and storing the oxygen scavenger in the space No effect on surface discoloration prevention.
- Fe which is the main component of the oxygen scavenger, is ionized by moisture in the container and reacts with Sn to discolor the ball surface.
- the discoloration causes an error of the image recognition apparatus.
- a space for accommodating the oxygen scavenger is prepared in the container, the entire container becomes large, which is inconvenient for handling during work.
- the method of containing the antioxidant component in the resin material of the container, or the method of containing the member containing the antioxidant component in the container together with the solder balls There is a problem that the manufacturing cost of the container is high.
- Various materials are used for the containers and packing materials. However, if containers such as solder balls that are consumed every day are materials that are difficult to recycle, there is a problem that the environmental load increases.
- the method of welding the outer lid of the container body with a seal is based on the premise that it will be used up once opened, and the seal cannot be pasted again. Therefore, if it is not used up at a time, there is a problem that the remaining solder balls are wasted. Moreover, the antioxidant means is not fully taken.
- the present invention provides a package body and a storage method for storing a micro solder ball, which can solve some of the problems in the prior art, in order to prevent “deterioration” such as oxidation and deformation of the micro solder ball. It is an issue.
- the present invention Filling a container of breathable material with fine solder balls; Providing a deoxygenating desiccant to be placed outside the container; Storing the container and the deoxygenating desiccant in a non-breathable bag member and sealing in an airtight state; A method for preserving a fine solder ball is provided. After the container and the deoxygenating desiccant are stored in the bag member, the bag member may be further deaerated before the bag member is sealed in an airtight state.
- a package for storing fine solder balls wherein the container is made of a breathable material.
- the inside of the bag member may be deaerated.
- a plurality of the containers may be provided, and a holding member that fixes and maintains a relative position between the plurality of containers may be further provided.
- the holding member can cover a plurality of containers.
- the holding member may have a bulging portion for alleviating an impact from the outside.
- the holding member When the deoxygenating desiccant is disposed outside the holding member, the holding member has air permeability.
- the holding member may be made of a breathable material.
- the holding member may have a vent hole.
- the holding member may have a recess for seating the deoxygenating desiccant in place.
- the holding member may be a connecting member that connects a plurality of the containers, and the connecting member may be manually broken.
- the container may be a self-supporting member.
- the container may include a container main body and a lid member that covers an opening of the container main body.
- the container can be made of a transparent or translucent resin.
- the container may be conductive.
- the holding member can also be made of a transparent or translucent resin.
- the container is preferably made of polyethylene terephthalate suitable for recycling.
- the holding member is also preferably made of polyethylene terephthalate suitable for recycling.
- a container made of a breathable material used in the method for storing a fine solder ball according to the present invention It has a container body filled with micro solder balls, an inner lid member, and an outer lid member.
- the inner lid member is dimensioned to fit into the opening of the container body with a gap fit.
- the outer lid member and the container main body have a gap that allows a fine solder ball to pass between the inner lid member and the container main body.
- the inner lid member is held so as not to be formed, Can be a container.
- the container for accommodating the fine solder balls is made of a breathable material
- the deoxidizing desiccant disposed outside the container is housed in the bag member together with the container and sealed in an airtight state.
- the effect of the deoxidizing desiccant can be exerted over the entire solder balls inside the container.
- the deoxygenating desiccant has a deoxygenating function and also absorbs moisture, thereby preventing oxidation of an object caused by oxygen and moisture. Therefore, the effect of the deoxidizing desiccant is useful for preventing oxidation and yellowing of the surface of the fine solder ball.
- Fe which is the main component of the oxygen scavenger, is ionized by the moisture in the container and reacts with Sn, causing oxidation of the solder balls. Since the water to be ionized is also removed, oxidation due to oxygen, oxidation due to moisture, and oxidation due to both factors can be prevented.
- the breathable material constituting the container has a certain degree of strength and can be manufactured at low cost with a material excellent in processability, such as a resin material such as PET. Further, by using such a storage method of the present invention, it is possible to prevent the ball storage container and the storage member of the storage container from being dropped or deformed due to the stacking of the solder balls. Furthermore, when the ball storage container and / or the storage container holding member is made of a PET material, the PET agent is used as a fiber or a resin molded product again from other materials such as PP (polypropylene) and PS (polystyrene). Since there are many means that can be reused, the environmental impact is smaller than other materials. In the use of a storage container for a consumption material such as a fine solder ball, it is desirable to use a PET material from the viewpoint that the environmental load is small and it can be reused for various purposes.
- a material excellent in processability such as a resin material such as PET.
- the container itself can be made small and convenient for handling. There is no fear that the solder balls will scatter when the hygroscopic agent is taken out from the container.
- the longitudinal cross-sectional view which shows one form of the package body for the preservation
- the oblique view which shows the state of the package body of this invention before enclosure. Sectional drawing of a container. An oblique view of the container. The fragmentary sectional view of the container of the state accommodated in the holding member. The top view which shows the holding member of another form with a container. The longitudinal cross-sectional view of the container of another form.
- FIG. 1 is a longitudinal sectional view showing one embodiment of a package body for storing fine solder balls according to the present invention.
- FIG. 2 is a perspective view showing a state of the package body before sealing.
- a container 2 made of a breathable material filled with fine solder balls and a deoxygenating desiccant 3 disposed outside the container 2 are non-breathable.
- the bag member 4 is accommodated in the bag member 4, and the bag member 4 is sealed in an airtight state.
- the plurality of containers 2 are covered by the holding member 5.
- the bag member 4 After storing the container 2 and the deoxygenating desiccant 3 in the bag member 4, the bag member 4 may be deaerated before sealing the bag member 4 in an airtight state.
- the bag member 4 may have an inert atmosphere such as nitrogen or argon.
- FIG. 3 is a longitudinal sectional view of the container 2
- FIG. 4 is an exploded perspective view of the container 2.
- the container 2 includes a container main body 7 that accommodates minute solder balls 6 (diameter of about 70 ⁇ m), and a lid member 9 that covers the opening 8 of the container main body 7.
- the container main body 7 and the lid member 9 are fitted at respective tapered portions. The fitting is made tight so that the lid member 9 is not inadvertently removed, but a knob portion 10 may be provided on the lid member 9 so that it can be easily removed by hand.
- the opening 8 is closed again by the lid member 9.
- the deoxygenating desiccant 3 is disposed outside the container 2 and the container 2 containing the fine solder balls 6 is made of a breathable material.
- the breathable material include those using a resin material such as PET. These resin materials can give the container 2 strength that can withstand a certain degree of impact, and are excellent in workability.
- the reason why the material of the container 2 is made of a breathable material instead of simply providing a vent hole in the container 2 is that the effect of the deoxidizing desiccant 3 from the outside is exerted on the entire small solder balls 6 in the container 2. is there.
- the effect of the air vents at a plurality of locations is lower than the effect of the entire fine porosity in the air permeable material, and there is a possibility that the fine solder balls 6 may leak.
- the container 2 is preferably made of a transparent or translucent resin material so that the presence or absence of the internal minute solder balls 6 can be visually confirmed.
- the holding member 5 is also made of a transparent or translucent resin material, so that the presence or absence of the fine solder balls 6 in the container 2 can be visually confirmed from the outside of the holding member 5.
- the container 2 is electrically conductive in order to prevent the solder balls 6 from adhering to the container body 7 and the lid member 9 due to static electricity and, moreover, scattering. It is preferable to have the property.
- the container 2 can be coated with a conductive substance.
- a small opening for taking out the solder balls is formed in a part (for example, the center) of the cover member 9, and the opening is formed by another small cover member. You may make it cover.
- the container 2 As another form of the container 2, as shown in FIG. 7, there is one having a container body 2a filled with fine solder balls, an inner lid member 2b, and an outer lid member 2c.
- the inner lid member 2b is dimensioned so as to fit into the opening of the container body 2a in a gap fitting state so that a clearance of, for example, 50 ⁇ m to 200 ⁇ m is formed between the inner lid member 2b and the opening of the container body 2a. Therefore, the inner lid member 2b is not substantially subjected to frictional resistance when being attached to and detached from the container body 2a.
- the outer lid member 2c is configured to be firmly attached to the container body 2a so as not to be inadvertently detached. For this reason, you may form the protrusion 2f for engaging with the horizontal flange 2e of the container main body 2a in the vertical flange 2d of the outer cover member 2c.
- the outer lid member 2c and the container body 2 are in a state in which no gap is formed between the inner lid member 2b and the container body 2a that allows the passage of the fine solder balls.
- the inner lid member 2b is held so as to be.
- the inner lid member 2b may be sandwiched between the outer lid member 2c and the shoulder 2g of the container body 2a.
- the contact between the bottom edge of the inner lid member 2b and the upper surface of the shoulder 2g of the container body 2a may be in a close contact state, or a clearance that does not allow the passage of fine solder balls is formed. Also good.
- the horizontal flange 2h of the inner lid member 2b may be sandwiched between the outer lid member 2c and the horizontal flange 2e of the container body 2a.
- the advantage of the container of FIG. 7 is that there is no risk that the fine solder balls in the container body 2a will jump out due to the impact when the outer cover member 2c is removed because of the inner cover member 2b. Further, since the inner lid member 2b is fitted in the opening of the container body 2a, an impact is not generated when it is removed. Therefore, even when the inner lid member 2b is removed, there is no risk that the fine solder balls will jump out.
- the shoulder 2g may be formed to be inclined inward so that the fine solder balls do not remain on the shoulder 2g of the container body 2a.
- the illustrated container 2 includes a container body and a lid member, but may be an integral container.
- the one-piece container is formed by housing the solder ball 6 in the container from the intake and then sealing the intake by means such as welding.
- the weakened part formed in a part of the container is broken to form an opening for taking out.
- the illustrated container 2 is a self-supporting member, which can withstand a certain amount of impact, but when used in an environment that is unlikely to receive external impact, the container 2 is self-supporting. You don't have to ask for sex.
- the container may be a flexible bag-shaped member.
- the plurality of containers 2 are entirely covered by the holding member 5 and their relative positions are fixed and maintained.
- the holding member 5 is made of a resin member that can be expanded and folded, and a receiving portion 12 for receiving the container 2 is formed in the lower plate member 11.
- a buffer bulging portion 13 is formed at the lower portion of the receiving portion 12 to mitigate an external impact. The impact from the outside in this case is conscious of the impact caused by dropping. A similar bulge can be provided at an appropriate location to mitigate another type of impact.
- the upper plate member 14 of the holding member 5 is formed with a downward projecting portion 15 for pressing the lid member 9 of the container 2 received in the receiving portion 13.
- the downward projecting portion 15 stably holds the container 2 in the receiving portion 13 when the upper plate member 14 is folded and overlapped with the lower plate member 11.
- the holes 16 and the protrusions 17 provided in the lower plate member 11 and the upper plate member 14 can cooperate with each other to hold both the plate members 11 and 14 in a folded state.
- a recess 18 is formed at the center of the upper plate member 14 so that the pack of the deoxygenating desiccant 3 can be seated.
- a recess 19 is formed for receiving a lower projection generated when the recess 18 is formed.
- the deoxygenating desiccant 3 may be arranged inside the holding member 5, but when arranged outside the holding member 5 as in the illustrated embodiment, the holding member 5 covering the entire periphery of the container 2 is also breathable. It is necessary to have. This is because the effect of the deoxygenating desiccant 3 is exerted on the container 2 and eventually on the solder balls 6 inside the container 2.
- the holding member 5 itself may be made of a breathable material, or at least one vent hole may be formed in the holding member 5. Such a vent may be provided in the holding member 5 made of a breathable material.
- the container 2 is filled with fine solder balls, the container 2 is placed in the receiving portion 12 of the holding member 5, the lower plate member 11 and the upper plate member 14 are closed, and then the deoxygenating desiccant 3 is placed in the recess 18.
- Container 2, holding member 5 and deoxygenating desiccant 3 are placed in bag member 4.
- the bag member 4 is a non-breathable member.
- the sheet used for the bag member 4 has sufficiently low oxygen permeability and water vapor permeability. Regarding the oxygen permeability, it is desirable that the amount of oxygen permeating the sheet per 1 m 2 per day in an environment of a temperature of 23 ° C., a humidity of 0%, and an atmospheric pressure of 1 MPa is 10 ml or less.
- the bag member 4 can be made of an aluminum sheet material, for example. Alternatively, non-breathability may be imparted by coating the breathable material with aluminum or the like.
- the deoxygenating desiccant has a deoxygenating function and also absorbs moisture, thereby preventing oxidation of an object caused by oxygen and moisture.
- RP agent brand name of Mitsubishi Gas Chemical Co., Ltd. product
- RP agent brand name of Mitsubishi Gas Chemical Co., Ltd. product
- the bag member 4 After storing the container 2 and the deoxygenating desiccant 3 in the bag member 4, the bag member 4 may be deaerated before the bag member is sealed in an airtight state.
- the holding member 5 holds four containers 2, but the holding member 5 may hold five or more or three or less containers 2. When the number of containers 2 held by the holding member 5 is large, the number of deoxygenating desiccants 3 may be increased.
- part of the bag member 4 is broken, the holding member 5 is taken out, opened, and the container 2 is taken out.
- the lid member 9 of the container 2 is removed and the solder balls 6 inside are supplied onto the pallet.
- the unused container 2 is returned to the bag member 4 together with the unused new deoxygenating desiccant 3 while being accommodated in the holding member 5.
- the broken part of the bag member 4 is securely sealed, such as thermocompression bonding, so that the outside air does not enter.
- FIG. 6 shows a holding member according to another embodiment.
- This holding member is formed as a connecting member 20 for connecting the containers 2 so as to extend laterally from the container main body.
- the central portion of the connecting member 20 is a fragile portion 21, and the user can break the fragile portion 21 by hand as necessary.
- the connecting member 20 does not have a function of protecting the solder balls in the container 2 against an impact such as a drop, but the impact of a vibration or the like can be used to fix and maintain the relative positions of the plurality of containers 2 individually.
- the container 2 can be prevented from shaking greatly.
- Example 1 The embodiment of the present invention shown in FIG. 1 and FIG. 2 is taken as Example 1, and a PET container (capacity 40 cc) is filled with a fine solder ball having a diameter of 70 ⁇ m up to 80% of the capacity. Member) and covered with an aluminum coated bag (bag member) together with an RP agent (deoxygenating desiccant).
- RP agent deoxygenating desiccant
- Example 2 is an example in which the container was not held by the holding member in Example 1.
- Comparative Example 1 is obtained by encapsulating an oxygen scavenger in place of the RP agent in Example 1.
- Comparative Example 2 is that in Example 1, which was not held by the holding member and was not covered with the aluminum coat bag.
- Comparative Example 3 is a glass bottle filled with fine solder balls, sealed together with an RP agent, and plugged.
- Comparative Example 4 is a case in which a fine solder ball is filled in an aluminum-coated bag, and an RP agent is further enclosed and sealed.
- the yellowing test method was as follows. Each Example and Comparative Example were put in a constant temperature and humidity chamber set to a temperature of 30 ° C. and a humidity of 70%, taken out after 30 days (720 hours), and the yellowness of the surface of the fine solder ball was measured with a spectrocolorimeter.
- the apparatus used was a spectrocolorimeter CM-3500d manufactured by Konica Minolta.
- the oxide film test method was the same as the yellowing test method, and the thickness of the oxide film on the surface of the fine solder ball in each example and comparative example was measured by Auger electron spectroscopy.
- the apparatus used was PHI-700 manufactured by ULVAC-PHI.
- ⁇ Strain rate of solder balls is measured by packaging fine solder balls in each example and comparative example, and then placing them in an arbitrary cardboard box. Next, a 100 kg weight body was placed on each cardboard box, and the sphericity of the solder ball was measured by a CNC image measurement system. As the apparatus, Ultra Quick Vision, ULTRA QV350-PRO manufactured by Mitutoyo Corporation was used.
- the method according to the present invention suppresses oxidation / yellowing of the fine solder balls, as can be seen by comparing Examples 1 and 2 with Comparative Examples 1 and 2, and Further, deformation of the fine solder ball due to external pressure is prevented, and further, as can be seen from comparison between Examples 1 and 2 and Comparative Examples 3 and 4, the fine ball causes adhesion of the fine solder ball to the packaging material due to static electricity. An excellent effect of preventing deformation and dissipation of the film was obtained.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Packages (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Abstract
Description
容器や梱包資材には様々な素材のものが使用されるが、日々消費されるはんだボールのような容器が、リサイクルに困難な素材であれば、環境負荷が高くなるという問題がある。
通気性材料からなる容器に微小はんだボールを充填する段階と、
前記容器の外部に配置すべき脱酸素乾燥剤を用意する段階と、
前記容器および前記脱酸素乾燥剤を非通気性の袋部材内に収納し、気密状態に封止する段階と、
を含む、微小はんだボールの保存方法が提供される。
前記容器および前記脱酸素乾燥剤を前記袋部材内に収納した後、該袋部材を気密状態に封止する前に、該袋部材内を脱気する段階をさらに含むようにしてもよい。
微小はんだボールを収容した容器と、該容器の外部に配置された脱酸素乾燥剤と、前記容器および前記脱酸素乾燥剤を収容して気密状態に封止された非通気性の袋部材とを備え、
前記容器が通気性材料からなることを特徴とする、微小はんだボールの保存用パッケージ体も提供される。
前記袋部材の内部は脱気してもよい。
前記容器が複数備えられており、複数の前記容器間の相対位置を固定維持する保持部材をさらに備えるようにしてもよい。
前記保持部材は複数の前記容器の周囲を覆うようにすることができる。
前記保持部材は、外部からの衝撃を緩和するための膨出部を有することもできる。
前記脱酸素乾燥剤が前記保持部材の外部に配置された場合、前記保持部材は通気性を有するものとする。
前記保持部材を通気性材料からなるものとしてもよい。
前記保持部材が通気口を有するものとしてもよい。
前記保持部材は、前記脱酸素乾燥剤を適所に着座せしめる凹所を有することができる。
前記保持部材を、複数の前記容器間を連結する連結部材とし、該連結部材を手で破断可能な構造とすることもできる。
前記容器は自立性のある部材とすることができる。
前記容器は、容器本体と該容器本体の開口部を覆う蓋部材とを有するものとすることができる。
前記容器は透明または半透明な樹脂で作ることができる。
前記容器は導電性を有するものとすることができる。
前記保持部材も透明または半透明な樹脂で作ることができる。
前記容器は、リサイクルに適したポリエチレンテレフタレートで作ることが好ましい。
前記保持部材もまた、リサイクルに適したポリエチレンテレフタレートで作ることが好ましい。
本発明による微小はんだボールの保存方法に使用する、通気性材料からなる容器は、
微小はんだボールが充填される容器本体と、内蓋部材と、外蓋部材とを有しており、
前記内蓋部材は、隙間嵌め状態で前記容器本体の前記開口部に嵌合するよう寸法づけられており、
前記外蓋部材および前記容器本体は、前記外蓋部材が前記容器本体の前記開口部に取り付けられたとき、前記内蓋部材と前記容器本体との間に微小はんだボールの通過を許容する隙間が形成されない状態になるように前記内蓋部材を保持するようになされている、
容器とすることができる。
Claims (20)
- 通気性材料からなる容器に微小はんだボールを充填する段階と、
前記容器の外部に配置すべき脱酸素乾燥剤を用意する段階と、
前記容器および前記脱酸素乾燥剤を非通気性の袋部材内に収納し、気密状態に封止する段階と、
を含む、微小はんだボールの保存方法。 - 前記容器および前記脱酸素乾燥剤を前記袋部材内に収納した後、該袋部材を気密状態に封止する前に、該袋部材内を脱気する段階をさらに含む、請求項1に記載の微小はんだボールの保存方法。
- 微小はんだボールを収容した容器と、該容器の外部に配置された脱酸素乾燥剤と、前記容器および前記脱酸素乾燥剤を収容して気密状態に封止された非通気性の袋部材とを備え、
前記容器が通気性材料からなることを特徴とする、微小はんだボールの保存用パッケージ体。 - 前記袋部材の内部が脱気されている、請求項3に記載の微小はんだボールの保存用パッケージ体。
- 前記容器が複数備えられており、複数の前記容器間の相対位置を固定維持する保持部材をさらに備える、請求項3または4に記載の微小はんだボールの保存用パッケージ体。
- 前記保持部材が複数の前記容器の周囲を覆うようになされている、請求項5に記載の微小はんだボールの保存用パッケージ体。
- 前記保持部材が、膨出部を有している、請求項6に記載の微小はんだボールの保存用パッケージ体。
- 前記脱酸素乾燥剤が前記保持部材の外部に配置されており、前記保持部材が通気性を有している、請求項6または7に記載の微小はんだボールの保存用パッケージ体。
- 前記保持部材が通気性材料からなる、請求項6ないし8のいずれかに記載の微小はんだボールの保存用パッケージ体。
- 前記保持部材が通気口を有している、請求項6ないし9のいずれかに記載の微小はんだボールの保存用パッケージ体。
- 前記保持部材が、前記脱酸素乾燥剤を適所に着座せしめる凹所を有している、請求項5ないし10のいずれかに記載の微小はんだボールの保存用パッケージ体。
- 前記保持部材が、複数の前記容器間を連結する連結部材であり、該連結部材は手で破断可能な構造とされている、請求項5に記載の微小はんだボールの保存用パッケージ体。
- 前記容器が自立性のある部材である、請求項3ないし12のいずれかに記載の微小はんだボールの保存用パッケージ体。
- 前記容器が、容器本体と該容器本体の開口部を覆う蓋部材とを有している、請求項13に記載の微小はんだボールの保存用パッケージ体。
- 前記容器が透明または半透明な樹脂で作られている、請求項3ないし14のいずれかに記載の微小はんだボールの保存用パッケージ体。
- 前記容器が導電性を有している、請求項3ないし15のいずれかに記載の微小はんだボールの保存用パッケージ体。
- 前記保持部材が透明または半透明な樹脂で作られている、請求項5ないし12のいずれかに記載の微小はんだボールの保存用パッケージ体。
- 前記容器がポリエチレンテレフタレートで作られている、請求項3ないし16のいずれかに記載の微小はんだボールの保存用パッケージ体。
- 前記保持部材がポリエチレンテレフタレートで作られている、請求項5ないし12のいずれかに記載の微小はんだボールの保存用パッケージ体。
- 請求項1に記載の微小はんだボールの保存方法に使用する、通気性材料からなる容器であって、
微小はんだボールが充填される容器本体と、内蓋部材と、外蓋部材とを有しており、
前記内蓋部材は、隙間嵌め状態で前記容器本体の前記開口部に嵌合するよう寸法づけられており、
前記外蓋部材および前記容器本体は、前記外蓋部材が前記容器本体の前記開口部に取り付けられたとき、前記内蓋部材と前記容器本体との間に微小はんだボールの通過を許容する隙間が形成されない状態になるように前記内蓋部材を保持するようになされている、
容器。
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010541210A JP4868267B2 (ja) | 2008-12-01 | 2009-11-26 | 微小はんだボールの保存用パッケージ体および保存方法 |
| EP09830156.7A EP2354035B8 (en) | 2008-12-01 | 2009-11-26 | A storing package unit and a storing method for micro solder spheres |
| SG2011039625A SG171880A1 (en) | 2008-12-01 | 2009-11-26 | A storing packaging unit and a storing method for micro solder spheres |
| US13/123,585 US8434614B2 (en) | 2008-12-01 | 2009-11-26 | Storing package unit and a storing method for micro solder spheres |
| KR1020117012860A KR101129009B1 (ko) | 2008-12-01 | 2009-11-26 | 미소 땜납볼의 보존용 패키지체 및 보존 방법 |
| PL09830156T PL2354035T3 (pl) | 2008-12-01 | 2009-11-26 | Zespół opakowania do magazynowania i sposób magazynowania mikrokulek lutowniczych |
| CN2009801482282A CN102245482B (zh) | 2008-12-01 | 2009-11-26 | 微小焊球的保存用封装体及保存方法 |
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| JP2008306492 | 2008-12-01 | ||
| JP2008-306492 | 2008-12-01 |
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| PCT/JP2009/006383 Ceased WO2010064385A1 (ja) | 2008-12-01 | 2009-11-26 | 微小はんだボールの保存用パッケージ体および保存方法 |
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|---|---|
| US (1) | US8434614B2 (ja) |
| EP (1) | EP2354035B8 (ja) |
| JP (1) | JP4868267B2 (ja) |
| KR (1) | KR101129009B1 (ja) |
| CN (1) | CN102245482B (ja) |
| MY (1) | MY165840A (ja) |
| PL (1) | PL2354035T3 (ja) |
| PT (1) | PT2354035E (ja) |
| SG (1) | SG171880A1 (ja) |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2354035B8 (en) | 2013-07-10 |
| PL2354035T3 (pl) | 2013-09-30 |
| EP2354035B1 (en) | 2013-05-29 |
| KR101129009B1 (ko) | 2012-03-27 |
| JPWO2010064385A1 (ja) | 2012-05-10 |
| US20110198253A1 (en) | 2011-08-18 |
| EP2354035A4 (en) | 2012-05-09 |
| CN102245482B (zh) | 2012-09-26 |
| SG171880A1 (en) | 2011-07-28 |
| CN102245482A (zh) | 2011-11-16 |
| PT2354035E (pt) | 2013-08-22 |
| US8434614B2 (en) | 2013-05-07 |
| KR20110081353A (ko) | 2011-07-13 |
| TW201026565A (en) | 2010-07-16 |
| EP2354035A1 (en) | 2011-08-10 |
| TWI389825B (zh) | 2013-03-21 |
| MY165840A (en) | 2018-05-17 |
| JP4868267B2 (ja) | 2012-02-01 |
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