CN100408296C - Cleaning material for molding metal die, and cleaning method - Google Patents
Cleaning material for molding metal die, and cleaning method Download PDFInfo
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- CN100408296C CN100408296C CNB2003801047912A CN200380104791A CN100408296C CN 100408296 C CN100408296 C CN 100408296C CN B2003801047912 A CNB2003801047912 A CN B2003801047912A CN 200380104791 A CN200380104791 A CN 200380104791A CN 100408296 C CN100408296 C CN 100408296C
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Abstract
The present invention provides a sheet-like cleaning material for a molding metal die formed by enclosing a cleaning member in at least two layers of sheet-like base materials, characterized in that the cleaning member is formed of one type of tablet-like, granular, or powdery cleaning member or a sheet-like or a plate-like cleaning member. The cleaning material for the molding metal die desirably involves a forming member together with the cleaning member, the sheet-like base materials are desirably formed of sheet-like fiber base materials with a porosity of 70 vol.% or more, and the sheet-like fiber base materials are used as the outermost layer of the cleaning material for the molding metal die.
Description
Technical field
The present invention relates to a kind of clean electronic component sealing with die for injection molding and transfer molding with the mould on the surface of mould etc. with cleaning material and cleaning method.
Background technology
In the past, when by the sealing moulding thing of (being designated hereinafter simply as ICLSI) such as thermosetting resin long-time continuous such as epoxy resin ground moulding integrated circuits, the mould inside surface is contaminated, when still continuing moulding, cause the surperficial contaminated of moulding product, the moulding product are attached on the mould, thereby the situation that can not proceed operations for forming happens occasionally.Therefore, regular cleaning mold, already used method is, just carries out ratios for several times hundreds of times with every injection moulding moulding material, fills the cleaning mold resin in the mould of clamped condition, with the resin dregs of removing adhesion etc.
The method of using existing cleaning resin to clean is, the lead frame of lead frame by in mould, being provided for sealing resin or cheap metal or model made of paper, from jar, fill the method for cleaning resin, clean resin, clamping mold and the method that is heated with setting on interface and clamping.
Yet, in above-mentioned existing mould cleaning method, have following problem.In mould, be provided for the lead frame of sealing resin or the lead frame of model, from hopper, fill in the method for cleaning resin, because the lead frame that is provided with in mould and the lead frame of model use in cleaning and will be cleaned resin-shaped resin moulding (sealing) for 1 time, thereby can't re-use.Thus, because each cleaning all will be used the lead frame of lead frame and model, will cause uneconomic problem.
In addition, if use the lead frame of lead frame or metal pattern, its problem is, with the article shaped after cleaning as industrial waste when discarded, must separation resin and metal, and this separation is difficult.
For addressing this problem, used following method, that is, do not use the lead frame of lead frame and model, will clean directly heat hardening in mould of resin, the compression cleaning method that can clean thus, yet there are the following problems for this method, except that going back because the generation of resin leakage and fragment in the configuration of cleaning resin the spended time, make that the scavenging period in 1 cycle is elongated, consequently total scavenging period is elongated.
Therefore,, open in the flat 7-304044 communique, proposed in the base material of sheet or band shape, will clean resin moulding in advance, use the cleaning method of this integrated cleaning material the spy as the method that solves such problem.
Yet, because what the method for describing in the above-mentioned communique was used is, on laminar or banded base material, epoxy resin or melamine resin etc. are cleaned the cleaning material of resin moulding in advance, therefore the method when moulding in advance on base material is a low temperature extrusion forming (compressing tablet: in the time of sheet), exist the cleaning resin and be difficult to moulding in advance on base material, even can compress, airborne dust is also a lot, mould problem such as collapse when carrying; When the method for moulding in advance on base material is the fusion adhesion, there is following problem, the cleaning resin is difficult to fusion and sticks on the base material, even can fusion adhere to, also can owing to for be provided with clean that resin experiences be subjected to thermal process to cause cleaning resin flow to worsen, therefore clean the corner that resin can't be filled into mould, thereby can not thoroughly clean, in addition, integrated easily and on base material, be provided with through hole in order to make base material and to clean resin, therefore cause the intensity reduction of base material etc.
In addition, be accompanied by the variation of electronic equipments such as integrated circuit package, the mould that its moulding the is used variation that also becomes makes location-appropriate at mould cavity be provided with and cleans very difficulty of resin.
In addition, as cleaning method, the cleaning resin of moulding in advance must be provided with according to the position of mould cavity, and this just has problems in operation.
Summary of the invention
For addressing the above problem a little, the present invention proposes the cleaning material that uses mould to use, this cleaning material is a kind of laminar mould cleaning material that has comprised cleaning element at least 2 layers laminar base material, wherein, above-mentioned cleaning element be sheet, graininess and Powdered at least a kind of cleaning element, or laminar or tabular cleaning element.Mould in the time of can preventing airborne dust or conveying thus collapses, the deterioration of flowability, simultaneously in cleaning method, the interior bag member that is used to comprise the film of cleaning element and adhesive tape etc. has the effect of the stopper that prevents resin leakage, its effect is: need not to be provided with according to the position of mould cavity, thereby solved the operation problem.
In addition, proposed to use a kind of mould cleaning material that includes above-mentioned cleaning element shaped component simultaneously among the present invention.Can further improve above-mentioned effect thus.
In addition, the present invention proposes and using a kind of above-mentioned laminar base material is that the pore plot ratio is 70% or above laminar fiber base material, and this laminar fiber base material is used for the outermost mould cleaning material of mould usefulness cleaning material.When stating effect in realization thus, can further realize not reducing the intensity of cleaning base material cleaning element and shaped component are spread all over to the effect in the corner of mould.
Description of drawings
Fig. 1 is profile and the plane of the laminar cleaning material A of embodiment 1.
Fig. 2 is profile and the plane of the laminar cleaning material B of embodiment 2.
Fig. 3 is profile and the plane of the laminar cleaning material C of embodiment 3.
Fig. 4 is profile and the plane of the cleaning material D of comparative example 1.
Fig. 5 is profile and the plane of the laminar cleaning material E of embodiment 4.
Fig. 6 is profile and the plane of the laminar cleaning material F of embodiment 5.
Fig. 7 is profile and the plane of the laminar cleaning material G of embodiment 6.
Fig. 8 is profile and the plane of the laminar cleaning material H of embodiment 7.
Fig. 9 is profile and the plane of the laminar cleaning material I of embodiment 8.
Figure 10 is profile and the plane of the laminar cleaning material J of embodiment 9.
Figure 11 is profile and the plane of the laminar cleaning material K of embodiment 10.
Figure 12 is profile and the plane of the laminar cleaning material L of embodiment 11.
Figure 13 is profile and the plane of the laminar cleaning material M of embodiment 12.
Figure 14 is profile and the plane of the laminar cleaning material N of embodiment 13.
Figure 15 is profile and the plane of the laminar cleaning material O of embodiment 14.
Figure 16 is profile and the plane of the laminar cleaning material P of embodiment 15.
The specific embodiment
As laminar (netted) base material that uses among the present invention, can list have 100 ℃ or above stable on heating paper, laminar fiber base material such as cloth, nonwoven.
Consider that the burning processing waits the easiness of waste treatment, this base material preferably is made of paper, cotton etc., the net that also preferred use is made by braided wires wire member etc.
As the example of this base material, for example can enumerate: Bemliese (registration mark) PO500, BA832,832R, BA112,112R, RB119,142,149,839 (above produce for Asahi Chemical Industry Co., Ltd), Ecule (registration mark) 6301A, 6401A, 6501A, 6601A, 6701A, 6A01A, Volans (registration mark) 4050P, 4061P, 4080P, 4081P, 4091P, 7093P, 7121P (above produce for Toyo Boseki K.K), Miracle Cloth (registration mark) DF-1-73, DF-5-100, Apitas (registration mark) RPN5-60SA, LS-70 (above produce for Daiwa Textile Co., Ltd.), Marix (registration mark) 10606WTD, 70500WSO, 90403WSO, 20451FLV, 20707WTA, 70600WTO, Nyace (registration mark) P0703WTO, WiWi (registration mark) R0405WTO, R0705WTO (above produce for Unitika Co., Ltd.), Kinocloth (registration mark) KS40, K60, K70, Palcloth (registration mark) P40, P60 (above is that prince Kinocloth Co., Ltd. produces), Panelon (registration mark) 2610,270,6810, K550,5130, S30off, 3700, RF860,7330GP, 5140,5150,5160, FT500, FT800, TO510, IH250 (above produce for Dynic Co., Ltd.), Oikos (registration mark) AP2050, AP2060, AP2080, AP2120, AM2060, AK2045, TDP2050, TDP2060 (above produce for Misshin Spinning Co., Ltd), 4000CR, PS-750CR, 8890CR, WE-60CR, H-8010E, JH-3003N, HP21, HP55 (above is that Japanese Vilene Co., Ltd. produces).
As above-mentioned laminar fiber base material, preferred pore plot ratio is 70% or above, and preferred especially pore plot ratio is 80-100%, this pore plot ratio be 70% or above laminar fiber base material be preferred for the outermost layer of cleaning material.As this pore plot ratio is 70% or above laminar fiber base material, can list Benliese (registration mark) PO500, BA832,832R, BA112,112R, RB119,142,149,839 (above produce for Asahi Chemical Industry Co., Ltd), Ecuel (registration mark) 6301A, 6401A, 6501A, 6601A, 6701A, 6A01A, Volans (registration mark) 4050P, 4061P, 4080P, 4081P, 4091P, 7093P, 7121P (above produce for Toyo Boseki K.K), Panelon (registration mark) 2610,270,6810, K550,5130, S30off, 3700, RF860, TO510, IH250 (above produce for Dynic Co., Ltd.), Oikos (registration mark) AP2050, AP2060, AP2080, AM2060, AK2045, TDP2050, TDP2060 (above produce for Misshin Spinning Co., Ltd), HP21, HP55 (above is that Japanese Vilene Co., Ltd. produces) etc.
This laminar fiber base material need not out a lot of through holes, and cleaning element and shaped component just can spread all over the corner to mould.In addition, owing to there is not perforate, when cleaning finishes the back taking-up,, thereby can not take place to rupture or tear because each member also has intensity.
This base material may be used singly or in combin.For example, can be one group with 2 thin base materials, with one group as a use, be the center perhaps with thick base material, thin base material is set down thereon.In addition, consider flowability, the big base material of mesh size can be set on the base material of arranged outside, the little base material of mesh size is set in the inboard.
There is no particular limitation to the size of this base material, preferably uses the size bigger than die area.When cleaning steam vent etc., even resin leakage is arranged, also can absorb, thereby avoided needing a large amount of time to clean the resin that overflows like this by redundance.
Different according to the combination of base material and resin, resin are to the permeability difference of base material, and therefore there is no particular limitation to the length of this redundance, considers the operation of cleaning after finishing, preferably than the marginal portion of mould how about 5cm or more than.
This base material includes sheet, graininess, at least a cleaning element in Powdered, laminar or tabular at least, can be by 2 base materials is superimposed and cleaning element is included in wherein, the base material of die area more than 2 times can also be done pouch and cleaning element is included in wherein.
In addition, this base material can use its at least a portion or all by the lining of thermoplastic resin membrane or thermoplastic resin adhesive tape, and can use attached be selected from two sides adhesive tape, adhesive and contact adhesive (below, bag member in abbreviating as.) bag member in waiting at least a kind.
To in this bag member painting method there is no particular limitation, usually can list laminated substrate and thermoplastic resin membrane method, adhere to the method for the thermoplastic resin adhesive tape of certain width, thermoplastic resin membrane's heartcut is become the suitably film of size, this film and base material is the stacked and method that applies etc.
In addition, bag member in can also not using makes laminar base material bonding by pressing or distortion, thereby applies.
There is no particular limitation for cleaning element being contained in method in the laminar base material, now row are given one example, at first, on the laminar base material of 1 thermoplastic resin membrane's lining, place the sheet, graininess of constant weight, at least a cleaning element in Powdered, laminar or tabular, the laminar base material that covers with the same shape of the laminar base material in below by side from it is prepared.
Afterwards, finish preparation, make cleaning element not slide by the laminar base material that heat-sealing overlaps.
In addition, preferably be partitioned into suitable area and be moved to avoid cleaning element, like this when transferring, during conveyance, cleaning element can not be offset, and is therefore more satisfactory.
In addition, can also use the laminar base material of bonding two sides adhesive tape, adhesive and contact adhesive on suitable area that cleaning element is included in wherein.
When on laminar base material bonding above-mentioned in the bag member, or when sealing, preferably outermost is partly carried out the secondary heat-sealing.Even Nei Ce interior bag member is owing to fusion takes place in the heat from mould like this, cause cleaning element to flow out, because carried out the secondary heat-sealing, thus also can be ended by the interior bag member in the outside, thus the leakage of resin prevented.
The primary raw material of the cleaning element that uses among the present invention is the melamine resinoid.
So-called melamine resinoid is meant and uses formaldehyde etc. with formed resins of triazines methylolation such as melamines, uses melamine-formaldehyde resin usually.
Melamine-formaldehyde resin prepares under the state of the aqueous solution usually, use by behind the dry aqueous solution such as for example spray dryer, just can obtain Powdered cleaning element, in the aqueous solution behind the mixed pulp, dry back just can obtain granular substance, Powdered and granular shape resin is carried out compressing tablet, can obtain the cleaning element of sheet.
In addition, flood laminar base material with the melamine-formaldehyde resin aqueous solution, become laminar cleaning element after the drying, the water solution impregnation is plate-like substrate for example, and dry back just can obtain tabular cleaning element.
At dipping during base material, base material by after in the melamine-formaldehyde resin aqueous solution, only by dry, just can be prepared laminar or tabular cleaning element.
The kind by the conversion base material for example, or adjust the concentration of resin liquid, or regulate the throttling condition of the resin liquid of dipping just can be adjusted into required impregnation rate to the impregnation rate of base material with resin.
In addition, by adjusting hardening of resin and flowability, also can adjust impregnation rate to base material.
The additive that has added other (for example, lubricant, mineral powders, hardening catalyst etc.) after, for example using, kneader, ribbon blender, Henschel mixer, ball mill etc. evenly mix, just can obtain Powdered, granular cleaning element, it is carried out compressing tablet, can obtain the cleaning element of sheet.
Laminar or the tabular cleaning element of making can cut into square, rectangle, bar shaped and other shape and use, and about the member that impregnation rate is high can use 1-2 to open, the member that impregnation rate is low can use many overlapping backs.
In addition, member can be prepared into the shape that meets mould or be configured so that resin loading mould cavity and hopper part efficiently.
By using above-mentioned laminar or tabular cleaning element, to open the method for flat 7-304044 communique record with the spy and compare, resin can be arranged in the mould more equably, thereby can prevent that resin is not filled in the die cavity.
The base material that includes the cleaning element of the cleaning material that this mould uses owing to be blended in the article shaped after the moulding, has and the same effect of filler that improves article shaped intensity.For the article shaped intensity after the raising moulding, use paper pulp in the commercially available cleaning element always, by it being replaced with laminar base material, the adhesion between filler is strengthened, and has consequently improved the intensity of article shaped.By use the pore plot ratio at outermost layer is 70% or above laminar fiber base material, and the permeability of resin is eliminated, and uses filler and base material to make article shaped intensity further improve simultaneously.
In addition, by the intensity of further raising article shaped, the chip that produces by force than article shaped intensity owing to the adhesion between mold fouling composition and the mould before can preventing has consequently also improved operation when improving spatter property.
Cleaning material of the present invention except that sheet, graininess, Powdered, laminar or tabular cleaning element, can also comprise unvulcanized synthetic rubber and/or natural rubber as shaped component.
As the synthetic rubber that uses among the present invention, can enumerate butyl rubber, acrylic rubber, silicon rubber, polybutadiene, polyisoprene, styrene-butadiene polymer, styrene-isoprene polymer, acrylonitrile-butadiene copolymers, ethene-alpha-olefin base polymer, ethylene-alpha-olefin-polyene polymer, s-B-S block polymer, styrene-isoprene-phenylethene block polymer, hydrogenation-styrene-ethylene-butylene-styrene block polymer, vinyl ionomer etc., unqualified to it.
Because this unvulcanized synthetic rubber or natural rubber demonstrate suitable viscoplasticity when heating and melting, therefore when clamping mold, it moves in the mould direction about along the center laminar base material and plays an important role, because this effect, laminar base material can be arranged on the position near die surface, thereby can reduce the chip of locating to produce at die cavity corner and blow vent etc.In addition, because this effect can also improve the fillibility of resin in die cavity, therefore also can eliminate owing to clean troubles such as resin flow resin not good and that insufficient pressure produces when cleaning is not filled in the die cavity.
Below, the present invention will be described in more detail by enumerating embodiment etc., but the present invention is not subjected to any qualification of these embodiment.
Reference example 1
480 weight portion melamines and 522 weight portion formalin (37% aqueous solution) are added thermal response, adopt known method to prepare melamine-formaldehyde resin.After in the resin liquid that obtains, adding the mixing of 248 weight portion paper pulp, sneak into the melamine-formaldehyde resin of paper pulp by the drying under reduced pressure manufacturing.Use shearing pulverizer that the resin that obtains is carried out coarse crushing, obtain the particle of melamine-formaldehyde resin.
Reference example 2
In the compression type kneader, mediated Mooney viscosity and be 25 propylene diene rubber 10 minutes, with the block that obtains in double screw extruder, be squeezed into laminar after, re-use the half finished rubber thin slice that backer roll makes wide 150mm, thick 3mm.
Reference example 3
480 weight portion melamines and 522 weight portion formalin (37% aqueous solution) are added thermal response, adopt known method to prepare melamine-formaldehyde resin.After in the resin liquid that obtains, adding the mixing of 248 weight portion paper pulp, obtain sneaking into the melamine-formaldehyde resin powder of paper pulp by drying under reduced pressure.
Production Example 1
In ball mill, mix and pulverize commercially available melamine resin (Nippon Carbide Kogyo K.K produces NikaresinS-176), 0.5 weight portion benzoic acid and the 1 weight portion zinc stearate of melamine-formaldehyde resin particle, 100 weight portions that 60 weight portion reference examples 1 obtain, thereby make the mold wash resin combination.
In tablet press machine, the mold wash that obtains is carried out compressing tablet with resin combination, thereby obtain the sheet cleaning element 1..
Production Example 2
In nauta mixer, mix commercially available melamine resin (Nippon Carbide Kogyo K.K produces NikaresinS-176), 0.5 weight portion benzoic acid and the 1 weight portion zinc stearate of melamine-formaldehyde resin particle, 100 weight portions that 60 weight portion reference examples 1 obtain, thereby make the graininess cleaning element 2..
Production Example 3
In ball mill, mix and pulverize commercially available melamine resin (Nippon Carbide Kogyo K.K produces NikaresinS-176), 0.5 weight portion benzoic acid and the 1 weight portion zinc stearate of melamine-formaldehyde resin particle, 100 weight portions that 60 weight portion reference examples 1 obtain, thereby make Powdered cleaning cleaning element 3..
Production Example 4
In ball mill, mix and pulverize commercially available melamine resin (Nippon Carbide Kogyo K.K produces NikaresinS-176), 0.5 weight portion benzoic acid and the 1 weight portion zinc stearate of melamine-formaldehyde resin powder, 100 weight portions that 60 weight portion reference examples 3 obtain, thereby make the mold wash resin combination.
At L/D is in the double screw extruder of 20 40mm, under the condition of 80 ℃ of barrel temperatures, 100 ℃ of T punch dies, screw rod rotation number 130rpm, extrudes the mold wash resin combination that obtains, and the tabular cleaning element that makes wide 150mm, thick 3mm 4..
Production Example 5
In ball mill, mix and pulverize the commercially available melamine resin of 100 weight portions (Nippon Carbide Kogyo K.K produces Nikaresin S-176), 10 weight portion powder paper pulp, 0.3 weight portion benzoic acid and 0.7 weight portion zinc stearate, thereby make the mold wash resin combination.
In 2 Bemliese BA-832, insert the mold wash resin combination that obtains, use to add press moulding in advance 30 seconds under 120 ℃, obtain central authorities at the laminar base material of wide 150mm, long 300mm be provided with wide 150mm, long 200mm, thick 4mm moulding in advance tabular cleaning element laminar cleaning element 5..
Production Example 6
The melamine resin that 100 weight portions are commercially available (Nippon Carbide Kogyo K.K produces Nikaresin S-260) is dissolved in 100 weight parts waters, also mix to wherein adding 0.5 weight portion hardening catalyst (Ri Dongli grinds Industrial Co., Ltd and produces Catanit A), 0.5 weight portion wetting agent (NOF Corp produces Rapisol A80) and 0.7 weight portion releasing agent (Dow CorningToray Silicone Co., Ltd. produces SH3771 oil), thereby make the aqueous solution of mold wash with resin combination.
Bemliese RB-149 is immersed in the above-mentioned aqueous solution that obtains, behind squeeze roll(s), use sieve formula air drier 100 ℃ dry down, thereby the laminar cleaning element that makes long 200mm, wide 150mm 6..
Production Example 7
In ball mill, mix and pulverize commercially available melamine resin (Nippon Carbide Kogyo K.K produces NikaresinS-176), 0.5 weight portion benzoic acid and the 1 weight portion zinc stearate of melamine-formaldehyde resin powder, 100 weight portions that 60 weight portion reference examples 3 obtain, thereby make the mold wash resin combination.
At L/D is in the double screw extruder of 20 40mm, under the condition of 80 ℃ of barrel temperatures, 100 ℃ of T punch dies, screw rod rotation number 130rpm, extrudes and obtains the mold wash resin combination, and the tabular cleaning element that makes wide 100mm, thick 1mm 7..
Production Example 8
The melamine resin that 100 weight portions are commercially available (Nippon Carbide Kogyo K.K produces Nikaresin S-260) is dissolved in 100 weight parts waters, also mix to wherein adding 0.5 weight portion hardening catalyst (Ri Dongli grinds Industrial Co., Ltd and produces Catanit A), 0.5 weight portion wetting agent (NOF Corp produces Rapisol A80) and 0.7 weight portion releasing agent (Dow Corning ToraySilicone Co., Ltd. produces SH3771 oil), thereby make the aqueous solution of mold wash with resin combination.
Bemliese RB-149 is immersed in the above-mentioned aqueous solution that obtains, behind squeeze roll(s), use sieve formula air drier 100 ℃ dry down, thereby the laminar cleaning element that makes long 300mm, wide 150mm 8..
Production Example 9
The melamine resin that 100 weight portions are commercially available (Nippon Carbide Kogyo K.K produces Nikaresin S-260) is dissolved in 100 weight parts waters, also mix to wherein adding 0.5 weight portion hardening catalyst (Ri Dongli grinds Industrial Co., Ltd and produces Catanit A), 0.5 weight portion wetting agent (NOF Corp produces Rapisol A80) and 0.7 weight portion releasing agent (Dow Corning ToraySilicone Co., Ltd. produces SH3771 oil), thereby make the aqueous solution of mold wash with resin combination.
Bemliese BA-112 is immersed in the above-mentioned aqueous solution that obtains, behind squeeze roll(s), use sieve formula air drier 100 ℃ dry down, thereby the laminar cleaning element that makes long 300mm, wide 250mm 9..
Production Example 10
In ball mill, mix and pulverize commercially available melamine resin (Nippon Carbide Kogyo K.K produces Nikaresin S-176), 0.5 weight portion benzoic acid and the 0.5 weight portion zinc stearate of melamine-formaldehyde resin particle, 40 weight portions that 60 weight portion reference examples 1 obtain, thereby make the mold wash resin combination.
In tablet press machine, the mold wash that obtains is carried out compressing tablet with resin combination, thereby obtain tabular cleaning element 10..
Production Example 11
The tabular cleaning element that utilizes Roughpulverizer to pulverize to make in the Production Example 10 10. after, with screening out micro mist, thereby make the graininess cleaning element
Production Example 12
Mixing 100 weight portion Mooney viscosities by the pressurization kneader is the oil 10 minutes that 15 propylene diene rubber and 10 weight portions are main component with the petroleum-type hydrocarbons, by double screw extruder with the block that obtains be squeezed into laminar after, re-use the laminar shaped component that backer roll makes wide 150mm, thick 3mm
Production Example 13
480 weight portion melamines and 522 weight portion formalin (37% aqueous solution) are added thermal response, adopt known method to prepare melamine-formaldehyde resin.Mix after in the resin liquid that obtains, adding 120 weight portion paper pulp, 0.5 weight portion benzoic acid and 0.5 weight portion zinc stearate, make the paste-like cleaning element
At first, by making thermoplastic resin membrane's heating and melting, the both ends of the length of the nonwoven (Asahi Kasei Corporation produces Bemliese RB-149) of 2 long 300mm, wide 250mm and the inboard separately 50mm place at both ends are glued together.
Then, fill sheet cleaning element that Production Example 1 makes 1. at the inside part cut apart by the thermoplastic resin membrane, be glued together by the inboard separately 50mm place of thermoplastic resin formed film equally, make laminar mold wash cleaning material A as shown in Figure 1 short both ends.
The laminar mold wash that use obtains carries out the outcome record of washing test in table-1 with cleaning material.Can judge from result of the test, laminar mold wash demonstrates good cleaning effect with cleaning material A.
Embodiment 2
At first, by making thermoplasticity adhesive tape heating and melting, the both ends of the length of the laminar base material (Asahi Kasei Corporation produces Bemliese BA-832) of 2 long 200mm, wide 150mm and inboard every 50mm place of end are glued together.Then, to wherein filling graininess cleaning element that Production Example 2 makes 2.,, make laminar cleaning element with the bonding remaining marginal portion of thermoplastic resin membrane.The cleaning element that obtains is arranged on long 300mm, wide 200mm laminar base material (BemlieseRB-149 of Asahi Kasei Corporation) central authorities and fixing after, by making thermoplasticity adhesive tape heating and melting, its end is bonding, thus make laminar mold wash cleaning element B shown in Figure 2.
The laminar mold wash that use obtains carries out the outcome record of washing test in table-1 with cleaning material.Can judge from result of the test, laminar mold wash demonstrates good cleaning effect with cleaning material B.
Embodiment 3
At first, by heat-sealing the both ends of the length of the laminar base material (Toyo Boseki K.K produces Volans 4091P) of 2 long 200mm, wide 150mm and inboard every 50mm place of end are glued together.
Then, 3. the Powdered cleaning element that filling Production Example 3 makes in 3 partitioning portions of the inboard of being cut apart by heat-sealing makes laminar cleaning element by sealing end.
The above-mentioned laminar cleaning element that obtains is clipped in 2 laminar base materials of cutting out by long 300mm, wide 250mm in advance (Toyo Boseki K.K produces Volans 4091P), make this cleaning element be arranged on the central authorities of base material, by heat-sealing that its end is bonding, thus make laminar mold wash cleaning element C shown in Figure 3.
The laminar mold wash that use obtains carries out the outcome record of washing test in table-1 with cleaning material.Can judge from result of the test, laminar mold wash demonstrates good cleaning effect with cleaning material C.
Comparative example 1
On Bemliese RB-149, process a plurality of through holes, pulverize commercially available compression-type cleaning member (Nippon Carbide Kogyo K.K produces Nikalet ECR SW-7320) again on its two sides, by at the both sides of through hole pressurized adhesion cleaning element, thereby make laminar mold wash cleaning element D shown in Figure 4.
In addition, in Fig. 1-4, the 1st, laminar base material, the 2nd, the sheet cleaning element 1., the 3rd, the thermoplastic resin membrane, the 4th, the graininess cleaning element 2., the 5th, Powdered cleaning element 3., the 6th, heat seal lands, the 7th, cleaning element (Nikalet SW-7320), the 8th, through hole.
At first, by making thermoplastic resin membrane's heating and melting, the both ends of the length of the laminar base material (Asahi Kasei Corporation produces Bemliese BA-112) of 2 long 300mm, wide 250mm and the inboard separately 50mm place at both ends are glued together.
Then, fill sheet cleaning element that Production Example 1 makes 1., by the thermoplastic resin membrane the inboard separately 50mm place at short both ends is glued together equally, make laminar cleaning element at the inside part cut apart by the thermoplastic resin membrane.
In 2 above-mentioned laminar cleaning elements that obtain, sandwich in advance the half finished rubber thin slice of cutting out by long 200mm, wide 150mm that obtains by reference example 2, make it be arranged on the central authorities of thin slice, same by thermoplastic resin membrane's cohesive terminus, thus make laminar mold wash cleaning material E shown in Figure 5.
The laminar mold wash that use obtains carries out the outcome record of washing test in table-2 with cleaning material.Can judge from result of the test, laminar mold wash demonstrates good cleaning effect with cleaning material E.
At first, by heat-sealing the both ends of the length of the laminar base material (Toyo Boseki K.K produces Volans 4091P) of 2 long 300mm, wide 250mm and inboard every 50mm place of end are glued together.
Then, 2. the Powdered cleaning element that filling Production Example 2 makes in 3 partitioning portions of the inboard of being cut apart by heat-sealing seals the inboard separately 50mm place at short both ends, makes laminar cleaning element.
In 2 above-mentioned laminar cleaning elements that obtain, sandwich in advance the half finished rubber thin slice of cutting out by long 200mm, wide 150mm that obtains by reference example 2, make its central authorities that are arranged on thin slice,, thereby make laminar mold wash cleaning material F shown in Figure 6 by the heat-sealing bonding end.
The laminar mold wash that use obtains carries out the outcome record of washing test in table-2 with cleaning material.Can judge from result of the test, laminar mold wash demonstrates good cleaning effect with cleaning material F.
At first, by heat-sealing the both ends of the length of the laminar base material (Toyo Boseki K.K produces Volans 4091P) of 2 long 300mm, wide 250mm and inboard every 50mm place of end are glued together.
Then, 3. the Powdered cleaning element that filling Production Example 3 makes in 3 partitioning portions of the inboard of being cut apart by heat-sealing seals the inboard separately 50mm place at short both ends, makes laminar cleaning element.
In 2 above-mentioned laminar cleaning elements that obtain, sandwich in advance the half finished rubber thin slice of cutting out by long 200mm, wide 150mm that obtains by reference example 2, make its central authorities that are arranged on thin slice,, thereby make laminar mold wash material G shown in Figure 7 by the heat-sealing bonding end.
The laminar mold wash that use obtains carries out the outcome record of washing test in table-2 with cleaning material.Can judge from result of the test, laminar mold wash demonstrates good cleaning effect with cleaning material G.
In addition, in Fig. 5-7, the 11st, laminar base material, the 21st, the half finished rubber thin slice, the 31st, the sheet cleaning element 1., the 41st, the thermoplastic resin membrane, the 51st, the graininess cleaning element 2., the 61st, heat seal lands, the 71st, Powdered cleaning element 3..
Directly cut out the tabular cleaning element that obtains in the Production Example 4 4., it is clipped among the Bemliese RB-149 of long 300mm, wide 200mm, make its central authorities that are arranged on RB-149, and add press fit by length 200mm.By making thermoplasticity adhesive tape heating and melting that end is bonding, make laminar mold wash cleaning material H shown in Figure 8 then.
The laminar mold wash that use obtains carries out the outcome record of washing test in table-3 with cleaning material.Can judge from result of the test, laminar mold wash demonstrates good cleaning effect with cleaning material H.
The laminar cleaning element that Production Example 5 is obtained by heat fusing thermoplasticity adhesive tape cohesive terminus, makes laminar mold wash cleaning material I shown in Figure 9 after 5. being arranged on the central authorities of Bemliese RB-149 of long 300mm, wide 250mm.
The laminar mold wash that use obtains carries out the outcome record of washing test in table-3 with cleaning material.Can judge from result of the test, laminar mold wash demonstrates good cleaning effect with cleaning material I.
Embodiment 9
The laminar cleaning element that Production Example 6 is obtained adopts hot-melt type adhesive cohesive terminus after 6. being arranged on the central authorities of Bemliese RB-149 of long 300mm, wide 250mm, makes mold wash shown in Figure 10 cleaning material J.
The laminar mold wash that use obtains carries out the outcome record of washing test in table-3 with cleaning material.Can judge from result of the test, laminar mold wash demonstrates good cleaning effect with cleaning material J.
In addition, in Fig. 8-10,1a be tabular cleaning element 4., 2a is laminar base material, and 3a is the thermoplasticity adhesive tape, 4a be laminar cleaning element 5., 41a is a laminar cleaning element cleaning resin part 5., 5a be laminar cleaning element 6., 6a is the hot-melt type adhesive.
Embodiment 10
Directly cut out the tabular cleaning element that obtains in the Production Example 7 7., it is arranged on the central authorities of the Bemliese RB-149 of long 300mm, wide 200mm, fix by the backer roll pressurization by length 200mm.Be provided with 2 by thin slice, make 7. side within it of tabular cleaning element, between two tabular cleaning members, sandwich the half finished rubber thin slice of reference example 2 preparations of cutting out, again by the backer roll pressing and fixing by same size with quadrat method preparation.By making thermoplasticity adhesive tape heating and melting that end is bonding, make mold wash shown in Figure 11 cleaning material K then.
The laminar mold wash that use obtains carries out the outcome record of washing test in table-4 with cleaning material.Can judge from result of the test, laminar mold wash demonstrates good cleaning effect with cleaning material K.
Sandwich the half finished rubber thin slice of reference example 2 preparations of cutting out in laminar cleaning element that two Production Examples 8 the make centre between 8., use the backer roll pressing and fixing by length 200mm.After it is arranged on the central authorities of Bemliese RB-149 of long 300mm, wide 200mm,, make laminar mold wash cleaning material L shown in Figure 12 by making thermoplasticity adhesive tape heating and melting that end is bonding.
The laminar mold wash that use obtains carries out the outcome record of washing test in table-4 with cleaning material.Can judge from result of the test, laminar mold wash demonstrates good cleaning effect with cleaning material L.
Embodiment 12
Sandwich the half finished rubber thin slice of reference example 2 preparations of cutting out in laminar cleaning element that two Production Examples 9 the make centre between 9., use the backer roll pressing and fixing by length 200mm.After being clipped in it among the Bemliese RB-149 of 2 long 300mm, wide 250mm, by adding hot pressing that end is bonding, make laminar mold wash cleaning material M shown in Figure 13.
The laminar mold wash that use obtains carries out the outcome record of washing test in table-4 with cleaning material.Can judge from result of the test, laminar mold wash demonstrates good cleaning effect with cleaning material M.
In addition, in Figure 11-13,1b is the half finished rubber thin slice, and 2b is laminar base material, and 3b is the thermoplasticity adhesive tape, 4b be tabular cleaning element 7., 5b be laminar cleaning element 8., 6b be laminar cleaning element 9., 7b is melt bonded part.
Embodiment 13
Directly cut out the tabular cleaning element that obtains in the Production Example 10 10., it is clipped among the HP21 (Japanese Vilene Co., Ltd. produce) of long 300mm, wide 200mm, make its central authorities that are arranged on HP21, and add press fit by length 200mm.By heating and melting that end is bonding then, make laminar mold wash cleaning material N shown in Figure 14.
The laminar mold wash that use obtains carries out the outcome record of washing test in table-5 with cleaning material.Can judge from result of the test, laminar mold wash demonstrates good cleaning effect with cleaning material N.
Embodiment 14
On the Bemliese BA-832 that cuts out by long 300mm, wide 200mm (Asahi Kasei Corporation's product), the TO510 (Dynic Co., Ltd. product) of same size is set, this TO510 the distance separately the middle body of the part of edge 25mm be removed, the graininess cleaning element that Production Example 11 obtains is set in the middle body of removing
After, the Bemliese of same size is set thereon overlappingly again.To be terminal bonding separately by heating and melting at last, thereby make laminar mould cleaning member O shown in Figure 15.
The laminar mold wash that use obtains carries out the outcome record of washing test in table-5 with cleaning material.Can judge from result of the test, laminar mold wash demonstrates good cleaning effect with cleaning material O.
Embodiment 15
At the middle body of the HP21 that cuts out by long 300mm, wide 200mm (Japanese Vilene Co., Ltd. produce), be coated with the paste-like cleaning element that Production Example 13 obtains by the size of wide 150mm, long 250mm
Dry under 70 ℃, thus make cleaning element with support.2 cleaning elements with support that obtain are set, make the cleaning element face, sandwich the laminar shaped component that Production Example 12 obtains therein in the inboard
Use the backer roll pressing bonding with 3 layers, again by heating and melting will be separately terminal bonding, make laminar mould cleaning element P shown in Figure 16.
The laminar mold wash that use obtains carries out the outcome record of washing test in table-5 with cleaning material.Can judge from result of the test, laminar mold wash demonstrates good cleaning effect with cleaning material P.
Comparative example 2
In embodiment 13, replace HP21 (Japanese Vilene Co., Ltd. produce) by using H-8010 (Japanese Vilene Co., Ltd. produce), make mold wash shown in Figure 14 cleaning material Q.
The laminar mold wash that use obtains carries out the outcome record of washing test in table-5 with cleaning material.
In addition, in Figure 14-16,1c be tabular cleaning element 10., 2c is laminar base material, 3c is the heating and melting part, 4c is a graininess cleaning element 11,5c is laminar base material, 6c is a cleaning element
7c is laminar shaped component
By following test method, use the laminar mold wash of A-Q to carry out the cleaning mold test with cleaning material, outcome record is in table-1, table-2, table-3, table-4 and table-5.
Test method
Use commercially available biphenyl based epoxy resin moulding material (Hitachi changes into Co., Ltd. and produces CEL-9200XU), in the mould of TQFP, pass through 500 injection moulding to form the pollution of mould.Use the mould of this pollution, mould is cleaned and is used cleaning material until the die surface cleaning is clean repeatedly, estimates thus.
In addition, about the resin fillibility, add up to the ratio of 24 half formers to estimate with respect to 12 formers with first former of having filled resin and second former.
In addition, about chip, estimate by the number of the chip that produces in the die cavity.
Table-1
Table-2
Table-3
Table-4
Table-5
Laminar cleaning material of the present invention, it is included in cleaning element and shaped component in the laminar base material, can prevent airborne dust, mould during conveying collapses, the mobile deterioration, simultaneously in cleaning method, be used to comprise the effect that bag member in the film of cleaning element and the adhesive tape etc. has the stopper that prevents resin leakage, therefore be arranged on easily on the mould of cleaning material, owing to almost there is not chip to produce, so the operation of removing the article shaped after the moulding is also extremely easy, thereby can the good clean mould of efficient, the problem of cancel job, be 70% or above laminar fiber base material by use the pore plot ratio at the outermost layer of cleaning material in addition, need not to reduce the intensity of cleaning base material and just can make cleaning element and shaped component spread all over corner to mould.Given play to excellent mold wash therefrom.
Claims (7)
1. mould cleaning material, this cleaning material is a kind of laminar mould cleaning material that has comprised cleaning element and shaped component at least 2 layers laminar base material, wherein, described cleaning element be schistose granular, graininess and Powdered at least a kind of cleaning element, or laminar or tabular cleaning element, described shaped component is unvulcanized synthetic rubber and/or natural rubber.
2. mould cleaning material as claimed in claim 1, wherein, described laminar base material is that the pore plot ratio is the laminar fiber base material of 70%-99%, and this laminar fiber base material is used as the outermost layer of mould with cleaning material.
3. mould cleaning material as claimed in claim 1 or 2, wherein, at mould with stacked thermoplastic resin membrane or adhesive tape on part or all of cleaning material.
4. as each described mould cleaning material in claim 1 or 2, wherein, cleaning element and shaped component are contained in laminar base material heat fused in the base material by using thermoplastic resin membrane or adhesive tape.
5. as each described mould cleaning material in claim 1 or 2, wherein, cleaning element and shaped component are by using two sides adhesive tape, adhesive and contact adhesive at least a kind to be contained in the base material laminar base material is bonding.
6. as each described mould cleaning material in claim 1 or 2, wherein, cleaning element and shaped component make by pressing or distortion that laminar base material is bonding to be contained in the base material.
7. the cleaning method of a mould is characterized in that, sandwiches each described mould cleaning material among the claim 1-6 in heated mold, after the heating pressurization of process certain hour makes it sclerosis, removes cleaning material.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP354581/2002 | 2002-12-06 | ||
| JP354580/2002 | 2002-12-06 | ||
| JP2002354580 | 2002-12-06 | ||
| JP354583/2002 | 2002-12-06 | ||
| JP354582/2002 | 2002-12-06 | ||
| JP336742/2003 | 2003-09-29 |
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| CN1720126A CN1720126A (en) | 2006-01-11 |
| CN100408296C true CN100408296C (en) | 2008-08-06 |
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| CNB2003801047912A Expired - Fee Related CN100408296C (en) | 2002-12-06 | 2003-11-28 | Cleaning material for molding metal die, and cleaning method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103817836B (en) * | 2014-02-18 | 2016-04-06 | 成都先进功率半导体股份有限公司 | The clear modeling method of a kind of semiconductor dies |
| CN105773882A (en) * | 2016-04-19 | 2016-07-20 | 上海东恒化工有限公司 | Composition for die cleaning and die cleaning method |
| JP7318927B2 (en) * | 2019-11-15 | 2023-08-01 | 東北物流株式会社 | CLEANING SHEET, SEMICONDUCTOR DEVICE MANUFACTURING METHOD, AND CLEANING SHEET MANUFACTURING METHOD |
| CN111423630A (en) * | 2020-04-23 | 2020-07-17 | 江苏多肯新材料有限公司 | Rubber mixture for cleaning self-adhesive mold, preparation method and use method thereof |
| CN114951608B (en) * | 2022-05-31 | 2024-04-12 | 广东先导微电子科技有限公司 | Preparation method of high-purity antimony rod |
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| JP2001079857A (en) * | 1999-09-13 | 2001-03-27 | Hitachi Ltd | Mold cleaning sheet, mold demolding recovery sheet, mold cleaning method, and mold demolding recovery method |
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| US4670329A (en) * | 1985-12-13 | 1987-06-02 | Pas Rene J T M | Method and composite article for cleaning molds |
| JPH07304044A (en) * | 1994-05-11 | 1995-11-21 | Toshiba Chem Corp | Method and material for cleaning mold |
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