WO2011102223A1 - 撹拌・混合装置および半導体封止用樹脂組成物の製造方法 - Google Patents
撹拌・混合装置および半導体封止用樹脂組成物の製造方法 Download PDFInfo
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- WO2011102223A1 WO2011102223A1 PCT/JP2011/052159 JP2011052159W WO2011102223A1 WO 2011102223 A1 WO2011102223 A1 WO 2011102223A1 JP 2011052159 W JP2011052159 W JP 2011052159W WO 2011102223 A1 WO2011102223 A1 WO 2011102223A1
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- Prior art keywords
- stirring
- container
- composition
- resin composition
- mixing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/08—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices shaking, oscillating or vibrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/051—Stirrers characterised by their elements, materials or mechanical properties
- B01F27/06—Stirrers made by deforming a plate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/93—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with rotary discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/10—Mixers with shaking, oscillating, or vibrating mechanisms with a mixing receptacle rotating alternately in opposite directions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/20—Mixing the contents of independent containers, e.g. test tubes
- B01F31/23—Mixing the contents of independent containers, e.g. test tubes by pivoting the containers about an axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/44—Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/56—Mixers with shaking, oscillating, or vibrating mechanisms having a vibrating receptacle provided with stirring elements, e.g. independent stirring elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/88—Adding charges, i.e. additives
Definitions
- the present invention relates to a stirring / mixing apparatus and a method for producing a semiconductor sealing resin composition.
- a semiconductor package in which a semiconductor chip (semiconductor element) is covered (sealed) with a resin sealing material is known.
- the sealing material for the semiconductor package is obtained by molding a resin composition by, for example, transfer molding.
- the manufacturing process of the resin composition includes a process of mixing a resin composition (composition) containing a plurality of types of powder materials having different specific gravities. It is carried out by a rotary blade type mixing device that rotates and mixes blades such as a speed mixer, a Laedige mixer, and a Henschel mixer (for example, see Patent Document 1). That is, in these high-speed stirring mixers, the blades are rotatably installed inside the container, and the resin composition is obtained by rotating the blades while the resin composition is stored in the container. Mixed.
- a rotary blade type mixing device that rotates and mixes blades such as a speed mixer, a Laedige mixer, and a Henschel mixer (for example, see Patent Document 1). That is, in these high-speed stirring mixers, the blades are rotatably installed inside the container, and the resin composition is obtained by rotating the blades while the resin composition is stored in the container. Mixed.
- An object of the present invention is to provide a stirring / mixing apparatus and a method for producing a semiconductor sealing resin composition that can reduce mixing time while preventing metallic foreign matters from being mixed into the resin composition. There is.
- the present invention is a stirring / mixing device for mixing a composition containing a plurality of types of powder materials having different specific gravities, A container in which the composition is stored; A stirring member inserted into the container and stirring the composition; Drive means for vibrating the container, After stirring the composition stored in the container by the stirring member, the container is vibrated by the driving means to mix the composition.
- a stirring / mixing device for mixing a composition containing a plurality of types of powder materials having different specific gravities
- each of the plurality of stirring members preferably has a plate-like portion formed by dividing a shape similar to the shape of the bottom surface of the container into a plurality of portions.
- the stirring member preferably has a plate-like portion.
- the stirring / mixing device of the present invention is preferably configured to stir the composition by separating the plate-like portion from the bottom of the container.
- the stirring member has a rod-shaped portion, and the plate-shaped portion is provided at the tip of the rod-shaped portion.
- the plate-like portion is provided so as to be perpendicular to the rod-like portion.
- the driving means is configured to vibrate the container in at least two directions simultaneously.
- At least the inner surface of the container is made of a non-metal.
- At least the outer surface of the stirring member is made of a non-metal.
- the plurality of types of powder materials preferably include resin particles and inorganic particles.
- the composition is divided into a first layer containing resin particles and a second layer containing inorganic particles and stored in the container.
- the present invention is a method for producing a resin composition for semiconductor encapsulation, An agitation step of agitating a composition containing a plurality of types of powder materials having different specific gravities housed in a container with an agitation member; And a mixing step of mixing the composition with the container being vibrated.
- the stirring member has a plate-like portion
- the composition is preferably stirred by separating the plate-like portion from the bottom of the container.
- the container is vibrated simultaneously in at least two directions.
- the composition is divided into a first layer containing resin particles and a second layer containing inorganic particles, and stored in the container. Is preferred.
- the composition is uniformly mixed in the mixing step.
- the degree of uniformity is obtained by extracting 3 g of the composition from each of the six positions of the composition after the mixing step as a sample, and burning each sample.
- the standard deviation of the weight fraction of the remaining ash is preferably 0.2 or less.
- FIG. 1 is a diagram illustrating a production process of a resin composition.
- FIG. 2 is a side view (partially sectional view) showing an embodiment of the stirring / mixing apparatus of the present invention.
- FIG. 3 is a perspective view showing a container of the stirring / mixing apparatus shown in FIG.
- FIG. 4 is a perspective view showing a stirring member of the stirring / mixing apparatus shown in FIG.
- FIG. 5 is a plan view showing a state in which each stirring member is inserted into the container body of the stirring / mixing apparatus shown in FIG. 6 is a cross-sectional view showing a state in which the first composition and the second composition are stored in the container of the stirring and mixing apparatus shown in FIG.
- FIG. 1 is a diagram showing a manufacturing process of a resin composition
- FIG. 2 is a side view (partially sectional view) showing an embodiment of a stirring / mixing apparatus of the present invention
- FIG. 3 is a stirring / mixing shown in FIG.
- FIG. 4 is a perspective view showing a stirring member of the stirring / mixing device shown in FIG. 1
- FIG. 5 is a diagram showing a state where each stirring member is inserted into the container body of the stirring / mixing device shown in FIG.
- FIG. 6 is a cross-sectional view showing a state in which the first composition and the second composition are stored in the container of the stirring and mixing apparatus shown in FIG.
- FIGS. 2 to 4 and 6 will be described as “upper”, the lower side as “lower”, the left side as “left”, and the right side as “right”.
- a stirring / mixing apparatus 1 shown in FIG. 2 is an apparatus used in a stirring process and a mixing process in manufacturing a resin composition that is a molded body (a green compact). Prior to the description of the stirring / mixing device 1, first, the entire manufacturing process until the semiconductor sealing resin composition is manufactured from the raw materials will be described.
- each material which is a raw material of a resin composition is prepared.
- the raw material includes a resin, a curing agent, a filler (inorganic particles) (fine particles), and further includes a curing accelerator and a coupling agent as necessary.
- the resin an epoxy resin is preferable.
- epoxy resin examples include a cresol novolac type, a biphenyl type, a dicyclopentadiene type, a triphenolmethane type, and a polyaromatic ring type.
- Examples of the curing agent include a phenol novolac type, a phenol aralkyl type, a triphenolmethane type, and a polyaromatic ring type.
- Examples of the filler include fused silica (crushed and spherical), crystalline silica, alumina, and the like.
- Examples of the curing accelerator include phosphorus compounds and amine compounds.
- Examples of the coupling agent include silane compounds.
- the predetermined material may be abbreviate
- examples of other materials include a colorant, a release agent, a low stress agent, and a flame retardant.
- Examples of the flame retardant include brominated epoxy resin, antimony oxide, and non-halo / non-antimony type.
- Examples of the non-halo / non-antimony flame retardant include organic phosphorus, metal hydrate, nitrogen-containing resin, and the like.
- a predetermined material of raw materials is first pulverized (finely pulverized) with a pulverizer so as to have a predetermined particle size distribution.
- the raw material to be crushed is, for example, a raw material other than a filler such as a resin, a curing agent, and an accelerator, but a part of the filler can be added.
- the 1st composition containing multiple types of powder materials, such as a resin particle is obtained.
- the pulverizer for example, a continuous rotating ball mill, an airflow pulverizer, or the like can be used.
- a surface treatment is performed on a predetermined material of the raw materials, for example, all or a part (remainder) of the filler.
- this surface treatment for example, a coupling agent or the like is attached to the surface of the filler.
- the 2nd composition containing the inorganic particle (powder material) which is a filler is obtained.
- the fine pulverization and the surface treatment may be performed at the same time, or one of them may be performed first.
- the stirring / mixing device 1 includes the first composition obtained in the fine pulverization step and the second composition obtained in the surface treatment step, that is, a plurality of types of powder materials having different specific gravities.
- the resin composition (composition) is stirred and mixed roughly.
- the stirring / mixing device 1 will be described in detail later.
- the coarsely mixed resin composition is thoroughly mixed by the stirring / mixing device 1.
- the mixed resin composition is kneaded by a kneading apparatus.
- a kneading apparatus for example, an extrusion kneader such as a single-screw kneading extruder, a biaxial kneading extruder, or a roll kneader such as a mixing roll can be used.
- the kneaded resin composition is degassed by a degassing apparatus.
- the degassed resin composition is formed into a sheet shape by a sheet forming apparatus to obtain a sheet-shaped resin composition.
- a sheeting roll or the like can be used as the sheet forming apparatus.
- the sheet-shaped resin composition is pulverized with a pulverizer so as to have a predetermined particle size distribution to obtain a powdered resin composition.
- a pulverizer for example, a hammer mill, a stone mill, a roll crusher, or the like can be used as the pulverizer.
- a die having a small diameter is installed at the outlet of an extruder and discharged from the die without going through the sheeting, cooling, and pulverization steps.
- a hot cut method of obtaining a granular resin composition by cutting the molten resin composition to a predetermined length with a cutter or the like can also be used. In this case, after obtaining the granular resin composition by the hot cut method, it is preferable to perform deaeration before the temperature of the resin composition is lowered so much.
- the powdered resin composition can be compression-molded by a molded body manufacturing apparatus (tablet apparatus) to obtain a resin composition that is a molded body.
- This resin composition is used for covering (sealing) a semiconductor chip (semiconductor element), for example. That is, the resin composition is molded, for example, by transfer molding, and a semiconductor chip is covered as a sealing material to manufacture a semiconductor package.
- the step of tableting may be omitted, and the encapsulant may be formed by using a powdered resin composition, for example, by compression molding, injection molding, or the like.
- the stirring / mixing device 1 is a device for mixing a resin composition (composition) containing a plurality of types of powder materials having different specific gravities, and a container 2 for storing the resin composition. And a stirring member 3 that is inserted (installed) in the container 2 and stirs the resin composition, and a driving device (driving means) 4 that vibrates (swings) the container 2.
- the resin composition stored in the container 2 is stirred by the stirring member 3, and then the container 2 is vibrated by the driving device 4, and the resin composition in the container 2 is stirred.
- the plural types of powder materials include resin particles and inorganic particles.
- the driving device 4 includes a base 44, a slider 43, a holder (holding portion) 45 that detachably holds the container 2, and a first vibration mechanism (first driving mechanism) that vibrates the holder 45 in a predetermined direction. 41 and a second vibration mechanism (second drive mechanism) 42 that vibrates the slider 43 in a direction different from that of the first vibration mechanism 41.
- the holder 45 has a shape corresponding to the container 2 so that the container 2 can be detachably held.
- the holder 45 has a bottomed cylindrical shape (bottomed cylindrical shape).
- a protrusion 451 that protrudes toward the left side is formed on the outer peripheral surface of the holder 45.
- the first vibration mechanism 41 has a motor 410, and the tip of the rotating shaft 411 is connected to the tip of the protrusion 451. Note that a transmission mechanism or the like (not shown) may be provided between the rotation shaft 411 and the protrusion 451.
- the motor 410 is configured to be driven and controlled so that the rotating shaft 411 rotates (rotates) alternately by a predetermined angle in the forward direction and the reverse direction.
- the motor 410 When the motor 410 is actuated and the rotation shaft 411 rotates alternately by a predetermined angle in the forward direction and in the reverse direction, that is, when the rotation shaft 411 vibrates in the rotation direction, the holder 45 and the rotation shaft 411 are reverse to the forward direction. Alternately rotate by a predetermined angle, that is, oscillate in the rotation direction with the rotation shaft 411 as the rotation center. If the container 2 is held by the holder 45, the container 2 vibrates in the rotation direction of the rotation shaft 411 together with the holder 45.
- the rail 421 is provided on the base 44.
- the rail 421 extends along the left-right direction. That is, the rail 421 is formed to be parallel to the protrusion 451 of the holder 45 and the rotation shaft 411 of the motor 410.
- the slider 43 is installed on the base 44 so as to be movable in the left-right direction along the rail 421.
- the motor 410 is fixed to the slider 43, and the motor 410 and the holder 45 move together with the slider 43 in the left-right direction along the rail 421.
- the second vibration mechanism 42 has the rail 421, a motor (not shown), and a driving force transmission means (not shown) that transmits the driving force of the motor to the slider 43.
- the driving force transmission means of the second vibration mechanism 42 is configured to move the slider 43 in the left-right direction along the rail 421 by the operation of the motor.
- the motor of the second vibration mechanism 42 is configured to be driven and controlled so as to move the slider 43 alternately along the rail 421 in the left direction and the right direction by a predetermined distance.
- the slider 43 When the motor of the second vibration mechanism 42 is actuated, the slider 43 alternately moves by a predetermined distance along the rail 421 in the left direction and the right direction, that is, the slider 43 vibrates in the left-right direction.
- the motor 410 and the holder 45 of the first vibration mechanism 41 together with the slider 43 move by a predetermined distance alternately in the left direction and the right direction along the rail 421, that is, vibrate in the left-right direction. If the container 2 is held by the holder 45, the container 2 vibrates in the left-right direction together with the holder 45.
- the holder 45 and the container 2 held by the holder 45 are moved in two directions, that is, the rotation direction of the rotation shaft 411 and the left-right direction at the same time by the first vibration mechanism 41 and the second vibration mechanism 42. Vibrate.
- the resin composition in the container 2 is mixed.
- this agitation / mixing device 1 since the container 2 is vibrated to mix the resin composition, the inner surface of the container and the blades as in the case of using a rotating blade type mixing device that rotates the blades of a Henschel mixer or the like to perform mixing are used.
- a rotating blade type mixing device that rotates the blades of a Henschel mixer or the like to perform mixing are used.
- the vibration mechanism does not necessarily need to be divided into two parts, and one drive part may perform a vibration operation in two directions.
- the container 2 can be sealed, and has a container main body 21 in which the resin composition is stored, and a lid body 22 that is detachably attached to the container main body 21. That is, the container 2 is configured such that the inside of the container body 21 (container 2) is hermetically sealed (liquid-tightly sealed) in a state where the lid 22 is mounted on the container body 21.
- the container body 21 has a bottomed cylindrical shape (a bottomed cylindrical shape).
- the stirring / mixing device 1 has a plurality of (four in the illustrated configuration) stirring members 3.
- Each stirring member 3 is provided at a rod-like portion 32, a plate-like portion 31 provided at the distal end portion (lower side in FIG. 4) of the rod-like portion 32, and a base end portion (upper side in FIG. 4) of the rod-like portion 32.
- the plate-like portion 31 is provided so as to be perpendicular to the rod-like portion 32.
- Each of the stirring members 3 is formed by dividing a shape (circular in the illustrated configuration) into a plurality (four in the illustrated configuration), which is the same (same) as the shape of the bottom surface of the container main body 21 (container 2).
- a plate-like portion 31 having a shape is provided.
- each plate-like portion 31 is divided at equiangular intervals (90 ° intervals in the illustrated configuration). That is, each plate-like portion 31 has a sector shape in which all the central angles are equal (in the configuration shown, the central angle is 90 °).
- the stirring member 3 is configured to stir the resin composition by separating the plate-like portion 31 from the bottom portion of the container main body 21. That is, the stirring member 3 is initially arranged so that the plate-like portion 31 is positioned at the bottom of the container main body 21, and the plate-like portion 31 is pulled up from the container 2 by pulling up the stirring member 3. The resin composition is agitated and mixed roughly by the plate-like portion 31.
- each stirring member 3 is arranged so that the plate-like portion 31 is located at the bottom of the container body 21, as described above, the overall shape of each plate-like portion 31 of each stirring member 3 (each plate-like shape).
- the shape combined with the portion 31) is similar to the shape of the bottom surface of the container body 21.
- the constituent material of the container 2 is not particularly limited, but at least the inner surface of the container 2 is preferably made of a non-metal. In this case, you may comprise the whole container 2 with a nonmetal.
- the constituent material of the stirring member 3 is not particularly limited, but at least the surface of the stirring member 3 is preferably made of a nonmetal. In this case, you may comprise the whole stirring member 3 with a nonmetal.
- the increase rate of the metal in the resin composition after stirring and mixing of the resin composition by the stirring / mixing device 1 can be 1.0 wtppm or less, particularly 0.1 wtppm or less.
- non-metallic material examples include, but are not limited to, ceramic materials such as alumina and zirconia, and materials whose surfaces are coated with a resin material such as rubber and nylon. Among these, a resin material is used. Is preferred.
- the number of stirring members 3 is not limited to four, but may be one to three, or five or more, but a plurality is preferable. By providing a plurality of stirring members 3, the resin composition can be easily, quickly and reliably stirred.
- the stirring / mixing device 1 causes the powdered resin composition, that is, the first composition obtained in the fine pulverization step and the second composition obtained in the surface treatment step. Is stirred.
- each stirring member 3 is inserted into the container main body 21, and each stirring member 3 is placed (installed) so that each plate-like portion 31 is located at the bottom of the container main body 21.
- the overall shape of the plate-like portion 31 of each stirring member 3 is the same as the shape of the bottom surface of the container body 21.
- the resin composition is stored in the container body 21.
- the container main body 21 first, one of the first composition and the second composition is stored, and then the other is stored thereon.
- the resin composition is formed of the first layer 51 formed of the first composition including the resin particles and the second composition including the inorganic particles (filler).
- the second layer 52 is separated and stored in the container main body 21.
- first layer 51 or the second layer 52 may be a lower layer (in the figure, the first layer 51 is a lower layer), but the lower specific gravity may be the lower layer. preferable. Thereby, in the mixing process mentioned later, a resin composition can be mixed uniformly in a short time.
- the respective stirring members 3 are pulled up one by one from the container main body 21 in order.
- This order is not particularly limited, and examples thereof include a clockwise order and a counterclockwise order.
- the plate-like portion 31 is separated from the bottom of the container main body 21, and at that time, the plate-like portion 31 separates the first layer 51 and the second layer 52.
- the resin composition that had been mixed is stirred and mixed roughly. Thereby, in a mixing process, a resin composition can be mixed uniformly in a short time.
- the stirring member 3 when the stirring member 3 is pulled up, the resin composition remaining on the plate-like portion 31 is inclined to the plate-like portion 31 and returned into the container main body 21 using a tool such as a spatula.
- the stirring member 3 when pulling up the stirring member 3, for example, the stirring member 3 may be rotated around the axis of the rod-like portion 32.
- the lid body 22 is attached to the container body 21, and the inside of the container body 21 is sealed.
- the container 2 is attached to and held on the holder 45 of the driving device 4, and the driving device 4 is operated.
- the first vibration mechanism 41 and the second vibration mechanism 42 cause the container 2 to vibrate simultaneously in two directions, that is, the rotation direction of the rotation shaft 411 and the left-right direction in FIG. Mixed.
- the lid 22 may be integrated with the holder 45.
- the frequency (frequency) of vibration in each direction is not particularly limited, but is preferably about 5 to 8 cycles / second, and more preferably about 6 to 8 cycles / second.
- the frequency of the vibration of each direction may be the same, and may differ.
- the mixing time is not particularly limited, but is preferably about 1 to 7 minutes, more preferably about 3 to 5 minutes. If the mixing time is short, the degree of mixing is insufficient, and if the mixing time is long, the temperature of the contents increases, which is not preferable.
- the resin composition is uniformly mixed.
- the degree of uniformity is preferably such that the following standard deviation is 0.2 or less, more preferably about 0.0 to 0.1.
- the standard deviation is obtained by extracting 3 g of the resin composition as a sample from each of the six positions of the resin composition after the mixing step, ashing each sample, and the standard deviation of the weight fraction of the remaining ash (ash content) Variation).
- the manufacturing method of the stirring and mixing apparatus and semiconductor sealing resin composition of the present invention has been described based on the illustrated embodiment, the present invention is not limited to this, and the configuration of each part is as follows. Any structure having a similar function can be substituted. Moreover, other arbitrary structures and processes may be added to the present invention.
- the container is configured to vibrate in two directions at the same time in the mixing step.
- the present invention is not limited to this, and in the mixing step, for example, the container is vibrated in one direction, or 3 You may be comprised so that it may vibrate simultaneously in the above direction.
- the stirring / mixing device 1 it is possible to prevent metal foreign matters from being mixed into the resin composition, and a semiconductor chip is manufactured using the manufactured resin composition. When sealed, the occurrence of a short circuit or the like can be prevented.
- the resin composition in the container 2 is stirred by the stirring member 3, so that the resin composition is easily mixed and the mixing time is shortened. can do.
- ⁇ Raw material of the second composition Fused silica (average particle size 16 ⁇ m): 63.0 parts by weight
- Epoxy silane coupling agent ⁇ -glycidoxypropyltrimethoxysilane
- Particle size of 250 ⁇ m or more is 0 wt%, particle size of 150 ⁇ m or more, less than 250 ⁇ m is 2 wt%, and particle size of less than 150 ⁇ m is 98 wt%.
- Example 1 Using the stirring / mixing apparatus 1 shown in FIG. 2 described above, the first composition and the second composition were mixed as follows to obtain a powdery resin composition.
- the first composition was stored in the container main body 21, and the second composition was stored thereon.
- a first layer made of the first composition was formed in the lower layer
- a second layer made of the second composition was formed in the upper layer.
- each stirring member 3 was pulled up from the inside of the container main body 21 one by one in the clockwise order, and the resin composition in the container main body 21 was stirred.
- the area of the upper surface of the plate-like portion 31 of each stirring member 3 was 380 cm 2 , and the lifting speed was 0.2 m / s.
- the lid body 22 is attached to the container body 21, the inside of the container body 21 is sealed, the container 2 is attached to the holder 45 of the driving device 4, the driving device 4 is operated, and the container 2 is vibrated simultaneously in two directions. And the resin composition was mixed.
- the vibration frequency of the rotating shaft 411 in the rotational direction is 7 cycles / second
- the horizontal vibration frequency in FIG. 2 is 7 cycles / second
- the mixing time is 3 minutes. did.
- Example 2 A resin composition was obtained in the same manner as in Example 1 except that stirring by the stirring member 3 was performed once and mixing was not performed by vibrating the container 2 by the driving device 4.
- 3 g portions were extracted as samples from the following portions of the resin composition in the container 2 after mixing. Samples were extracted at six locations, ie, an outer peripheral portion and a central portion at the upper end portion of the resin composition in the container 2, an outer peripheral portion and a central portion at the central portion, and an outer peripheral portion and a central portion at the lower end portion. Got.
- Standard deviation in Example 1 0.04, Mixture temperature: 25 ° C. Standard deviation in Comparative Example 1: 0.25, Mixture temperature: 25 ° C Standard deviation in Comparative Example 2: 9.03, Mixture temperature: 20 ° C Standard deviation in Comparative Example 3: 0.10, Mixture temperature: 30 ° C
- Example 1 the uniformity of the resin composition after mixing is good.
- Comparative Example 1 in which stirring by the stirring member was not performed and in Comparative Example 2 in which stirring was performed only by the stirring member, the uniformity of the resin composition after mixing was found to be poor.
- Comparative Example 3 in which stirring by the stirring member was not performed, sufficient uniformity was obtained because the mixing time was long, but the temperature of the mixture increased and problems such as solidification occurred.
- the composition is mixed by vibrating the container, it is possible to prevent metal foreign matter (metal foreign matter) from entering the composition, and the produced resin composition When a semiconductor element is sealed using, the occurrence of a short circuit or the like can be prevented. Further, since the composition in the container is agitated by the agitating member prior to mixing the composition by vibrating the container, the composition is easily mixed and the mixing time can be shortened. Therefore, it has industrial applicability.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
Abstract
Description
前記組成物が収納される容器と、
前記容器内に挿入され、前記組成物を撹拌する撹拌部材と、
前記容器を振動させる駆動手段とを有し、
前記撹拌部材により、前記容器内に収納された前記組成物を撹拌した後、前記駆動手段により、前記容器を振動させ、前記組成物を混合するよう構成されていることを特徴とする撹拌・混合装置である。
本発明の撹拌・混合装置では、前記複数の撹拌部材のそれぞれは、前記容器の底面の形状と同様の形状を複数に分割してなる板状部を有するのが好ましい。
撹拌部材により、容器内に収納された比重の異なる複数種の粉末材料を含む組成物を撹拌する撹拌工程と、
前記容器を振動させ、前記組成物を混合する混合工程とを有することを特徴とする半導体封止用樹脂組成物の製造方法である。
前記撹拌工程において、前記板状部を前記容器の底部から離間させることにより、前記組成物を撹拌するのが好ましい。
原材料は、樹脂と、硬化剤と、充填材(無機粒子)(微粒子)とを有し、さらに必要に応じて、硬化促進剤と、カップリング剤等を有している。樹脂としては、エポキシ樹脂が好ましい。
カップリング剤としては、例えば、シラン化合物等が挙げられる。
図1に示すように、原材料のうちの所定の材料については、まず、粉砕装置により、所定の粒度分布となるように粉砕(微粉砕)する。この粉砕する原材料としては、例えば、樹脂、硬化剤、促進剤等の充填材以外の原材料であるが、充填材の一部を加えることもできる。これにより、樹脂粒子等の複数種の粉末材料を含む第1の組成物が得られる。また、粉砕装置としては、例えば、連続式回転ボールミル、気流式粉砕機等を用いることができる。
次に、撹拌・混合装置1により、前記微粉砕工程で得られた第1の組成物および前記表面処理工程で得られた第2の組成物、すなわち、比重の異なる複数種の粉末材料を含む樹脂組成物(組成物)を撹拌し、粗く混合する。なお、撹拌・混合装置1については、後に詳述する。
次に、撹拌・混合装置1により、前記粗く混合された樹脂組成物を完全に混合する。
次に、混練装置により、前記混合された樹脂組成物を混練する。この混練装置としては、例えば、1軸型混練押出機、2軸型混練押出機等の押出混練機やミキシングロール等のロール式混練機を用いることができる。
次に、脱気装置により、前記混練された樹脂組成物に対し脱気を行う。
次に、シート化装置により、前記脱気した樹脂組成物をシート状に成形し、シート状の樹脂組成物を得る。このシート化装置としては、例えば、シーティングロール等を用いることができる。
次に、冷却装置により、前記シート状の樹脂組成物を冷却する。これにより、樹脂組成物の粉砕を容易かつ確実に行うことができる。
次に、粉砕装置により、シート状の樹脂組成物を所定の粒度分布となるように粉砕し、粉末状の樹脂組成物を得る。この粉砕装置としては、例えば、ハンマーミル、石臼式磨砕機、ロールクラッシャー等を用いることができる。
次に、成形体製造装置(打錠装置)により、前記粉末状の樹脂組成物を圧縮成形し、成形体である樹脂組成物を得ることができる。
図2~図5に示すように、撹拌・混合装置1は、比重の異なる複数種の粉末材料を含む樹脂組成物(組成物)を混合する装置であり、樹脂組成物が収納される容器2と、容器2内に挿入(設置)され、樹脂組成物を撹拌する撹拌部材3と、容器2を振動させる(振り動かす)駆動装置(駆動手段)4とを有している。この撹拌・混合装置1では、まず、撹拌部材3により、容器2内に収納された樹脂組成物を撹拌し、その後、駆動装置4により、容器2を振動させ、その容器2内の樹脂組成物を混合する。なお、前記複数種の粉末材料は、樹脂粒子と無機粒子とを含んでいる。
この撹拌(予備撹拌)工程では、撹拌・混合装置1により、粉末状の樹脂組成物、すなわち、微粉砕工程で得られた第1の組成物および表面処理工程で得られた第2の組成物を撹拌する。
この混合(本混合)工程では、撹拌・混合装置1により、撹拌工程で撹拌(粗く混合)された樹脂組成物を混合する。
次に、容器2を駆動装置4のホルダ45に取り付け、保持させ、駆動装置4を作動させる。これにより、第1の振動機構41および第2の振動機構42により、容器2は、2方向、すなわち、回転軸411の回転方向および図2中の左右方向に、同時に振動し、樹脂組成物が混合される。また、蓋体22はホルダ45と一体でもかまわない。
<第1の組成物の原材料>
ビフェニール型エポキシ樹脂:7.1重量部
(油化シェルエポキシ(株)製YX4000H、融点105℃、エポキシ当量195)
フェノールアラルキル樹脂:6.4重量部
(三井化学(株)製XLC-3L、150℃の溶融粘度2.0ポイズ、水酸基当量172)
1、8-ジアザビシクロ(5、4、0)ウンデセン-7:0.2重量部
溶融シリカ:20.0重量部
カルナバワックス:0.5重量部
カーボンブラック:0.3重量部
溶融シリカ(平均粒径16μm):63.0重量部
エポキシシランカップリング剤(γ-グリシドキシプロピルトリメトキシシラン):0.5重量部
連続式回転ボールミルを用い、上記第1の組成物の原材料を粉砕し、その粒度分布を下記のように調整し、第1の組成物を得た。
リボンブレンダーを用い、溶融シリカの表面にエポキシシランカップリング剤を付着させ、第2の組成物を得た。
前述した図2に示す撹拌・混合装置1を用い、下記のようにして、第1の組成物および第2の組成物を混合し、粉末状の樹脂組成物を得た。
撹拌部材3による撹拌を行わない以外は、前記実施例1と同様にして樹脂組成物を得た。
撹拌部材3による撹拌を1回行い、駆動装置4により容器2を振動させることによる混合を行わない以外は、前記実施例1と同様にして樹脂組成物を得た。
撹拌部材3による撹拌を行わず混合時間を8分とし、前記実施例1と同様にして樹脂組成物を得た。
実施例1、比較例1、2および3に対し、それぞれ、下記のようにして樹脂組成物の均一性の評価を行った。
次に、各サンプルの処理後に残った灰分の重量を測定し、その灰分の重量分率の標準偏差を求めた。また、混合後の混合物について、熱電対温度計を用いてその内部温度を計測した。その結果は、下記の通りである。
比較例1における標準偏差:0.25、 混合物温度:25℃
比較例2における標準偏差:9.03、 混合物温度:20℃
比較例3における標準偏差:0.10、 混合物温度:30℃
これに対し、撹拌部材による撹拌を行わなかった比較例1と、撹拌部材による撹拌のみを行を行った比較例2では、いずれも混合後の樹脂組成物の均一性が不良であることが判る。撹拌部材による撹拌を行わなかった比較例3は混合時間が長いため十分な均一性は得られるが、混合物の温度が上昇し固結などの不具合を起こすこととなる。
また、容器を振動させて組成物を混合するのに先立って、撹拌部材により、容器内の組成物を撹拌するので、その組成物が混合され易くなり、混合時間を短縮することができる。したがって産業上の利用可能性を有する。
Claims (18)
- 比重の異なる複数種の粉末材料を含む組成物を混合する撹拌・混合装置であって、
前記組成物が収納される容器と、
前記容器内に挿入され、前記組成物を撹拌する撹拌部材と、
前記容器を振動させる駆動手段とを有し、
前記撹拌部材により、前記容器内に収納された前記組成物を撹拌した後、前記駆動手段により、前記容器を振動させ、前記組成物を混合するよう構成されていることを特徴とする撹拌・混合装置。 - 前記撹拌部材を複数有する請求項1に記載の撹拌・混合装置。
- 前記複数の撹拌部材のそれぞれは、前記容器の底面の形状と同様の形状を複数に分割してなる板状部を有する請求項2に記載の撹拌・混合装置。
- 前記撹拌部材は、板状部を有する請求項1または2に記載の撹拌・混合装置。
- 前記板状部を前記容器の底部から離間させることにより、前記組成物を撹拌するよう構成されている請求項3または4に記載の撹拌・混合装置。
- 前記撹拌部材は、棒状部を有し、該棒状部の先端部に前記板状部が設けられている請求項3ないし5のいずれかに記載の撹拌・混合装置。
- 前記板状部は、前記棒状部に対して垂直となるように設けられている請求項6に記載の撹拌・混合装置。
- 前記駆動手段は、前記容器を少なくとも2方向に同時に振動させるよう構成されている請求項1ないし7のいずれかに記載の撹拌・混合装置。
- 前記容器の少なくとも内面は、非金属で構成されている請求項1ないし8のいずれかに記載の撹拌・混合装置。
- 前記撹拌部材の少なくとも外面は、非金属で構成されている請求項1ないし9のいずれかに記載の撹拌・混合装置。
- 前記複数種の粉末材料は、樹脂粒子と無機粒子とを含む請求項1ないし10のいずれかに記載の撹拌・混合装置。
- 前記組成物は、樹脂粒子を含む第1の層と、無機粒子を含む第2の層とに分かれて前記容器内に収納される請求項1ないし11のいずれかに記載の撹拌・混合装置。
- 半導体封止用樹脂組成物の製造方法であって、
撹拌部材により、容器内に収納された比重の異なる複数種の粉末材料を含む組成物を撹拌する撹拌工程と、
前記容器を振動させ、前記組成物を混合する混合工程とを有することを特徴とする半導体封止用樹脂組成物の製造方法。 - 前記撹拌部材は、板状部を有し、
前記撹拌工程において、前記板状部を前記容器の底部から離間させることにより、前記組成物を撹拌する請求項13に記載の半導体封止用樹脂組成物の製造方法。 - 前記混合工程において、前記容器を少なくとも2方向に同時に振動させる請求項13または14に記載の半導体封止用樹脂組成物の製造方法。
- 前記組成物は、樹脂粒子を含む第1の層と、無機粒子を含む第2の層とに分かれて前記容器内に収納される請求項13ないし15のいずれかに記載の半導体封止用樹脂組成物の製造方法。
- 前記混合工程において、前記組成物を均一に混合する請求項13ないし16のいずれかに記載の半導体封止用樹脂組成物の製造方法。
- 前記均一の度合いは、前記混合工程後の前記組成物の6箇所からそれぞれ3gの前記組成物をサンプルとして抽出し、該各サンプルを燃焼させたとき、残った灰分の重量分率の標準偏差が0.2以下である請求項17に記載の半導体封止用樹脂組成物の製造方法。
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| US13/574,800 US9006309B2 (en) | 2010-02-19 | 2011-02-02 | Agitating and mixing device and method for producing semiconductor sealing resin composition |
| CN201180006198.9A CN102712105B (zh) | 2010-02-19 | 2011-02-02 | 搅拌/混合装置及半导体封装用树脂组合物的制造方法 |
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| CN111283948A (zh) * | 2020-02-24 | 2020-06-16 | 安徽艾普智能装备有限公司 | 一种应用于高压发泡机上的料罐 |
| CN111617666A (zh) * | 2020-05-07 | 2020-09-04 | 库尔勒明洋工贸有限责任公司 | 抗磨钻井液润滑剂的制备设备 |
| CN112755861A (zh) * | 2020-12-31 | 2021-05-07 | 陈康 | 一种畜禽粪便处理装置 |
| CN112755861B (zh) * | 2020-12-31 | 2022-11-08 | 江苏星鑫分离设备制造有限公司 | 一种畜禽粪便处理装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101825235B1 (ko) | 2018-02-02 |
| JP5617273B2 (ja) | 2014-11-05 |
| US20120289623A1 (en) | 2012-11-15 |
| MY160474A (en) | 2017-03-15 |
| TWI523681B (zh) | 2016-03-01 |
| KR20120139678A (ko) | 2012-12-27 |
| SG182757A1 (en) | 2012-08-30 |
| US9006309B2 (en) | 2015-04-14 |
| CN102712105A (zh) | 2012-10-03 |
| JP2011167970A (ja) | 2011-09-01 |
| CN102712105B (zh) | 2015-05-20 |
| TW201143881A (en) | 2011-12-16 |
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