CN102729369A - Demolding die - Google Patents
Demolding die Download PDFInfo
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- CN102729369A CN102729369A CN2012100844557A CN201210084455A CN102729369A CN 102729369 A CN102729369 A CN 102729369A CN 2012100844557 A CN2012100844557 A CN 2012100844557A CN 201210084455 A CN201210084455 A CN 201210084455A CN 102729369 A CN102729369 A CN 102729369A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/68—Release sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
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- Health & Medical Sciences (AREA)
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- Medicinal Chemistry (AREA)
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention provides a demolding die, which has excellent performances of making a molding die and a finished product detached, excellent die-shape transfer printing performances of making the shape of the molding die transfer printed on the finished product, surface smoothness of the finished product, and heat durability of being applied in a condition with an approximately 140-degree high temperature. The demolding die is independently formed by a polyurethane system elastic body with JISA hardness being over 70 and a Vickers softening temperature ranging from 100 degrees to 180 degrees or formed by a thermoplastic elastic-body compound with the polyurethane system elastic body as the main component.
Description
Technical field
The present invention relates to the demoulding and use film, this demoulding with film when the resin moulded moulding of optical semiconductor or semiconductor element, particularly use during the resin moulded moulding of LED (Light-Emitting Diode) lens.
Background technology
For example; Semiconductor elements such as optical semiconductor such as LED, optoisolator, phototransistor, photodiode, CCD, CMOS or transistor, IC (integrated circuit), LSI (large scale integrated circuit), ultra LSI, and are sealed through resin moulded moulding as encapsulant with organosilicon resin composition or composition epoxy resin.
Use moulding-forming equipment in the above-mentioned optical semiconductor or the sealing of semiconductor element, will be injected in the molding die as moulding resin, carry out moulding by the encapsulant that organosilicon resin composition or composition epoxy resin constitute.
As the method that makes the molding die and the demoulding of moulding article, for example, make the demoulding with the method for film between molding die and moulding resin by practicability (for example, referring to patent documentation 1).The demoulding is supplied in the moulding-forming equipment with the mode of film with Roll to Roll (volume to volume), get in the molding die of temperature adjustment to processing and forming temperature, through vacuum draw and with the molding die driving fit, fill moulding resin thereafter.Through certain hour post moulding resin solidification, open molding die this moment, then the demoulding keeps being aspirated the state in molding die with film, and the moulding article are peeled off with film from the demoulding.This demoulding is used for example by the tetrafluoroethene-ethylene copolymer (ETFE resin) of thermoplastic fluorocarbon resin, the monofilm (for example, referring to patent documentation 2) that hexafluoropropylene (HFP)/tetrafluoroethylene (TFE) copolymer resins (FEP resin) forms with film.
But; When being used for organosilicon resin composition as the moulding of the LED lens of moulding resin with film such demoulding; For example be about
, highly be the bullet cut lens shape about 4mm for the bottom surface; Even if the demoulding is carried out vacuum draw with film possibly not extend yet; Even extend also not and the molding die driving fit, existence can't obtain the unfavorable condition of the LED lens as design size.In addition, if through making the demoulding improve extension, then when vacuum draw, exist the demoulding with the unfavorable condition of film at the edge break of molding die with the thickness attenuation of film.
In addition, use film as the demoulding, the known method that the film that use forms by the resin combination that contains crystalline aromatic polyester is arranged, wherein, this crystalline aromatic polyester contains mutual-phenenyl two acid bromide two alcohol ester's (for example, referring to patent documentation 3) in crystallised component.
But, use film as the demoulding, such shown in patent documentation 3; If will be used for the moulding of LED lens by the film that the resin combination that contains crystalline aromatic polyester forms; This crystalline aromatic polyester comprises the mutual-phenenyl two acid bromide two alcohol ester, then when the demoulding is carried out vacuum draw with film, though with the molding die driving fit; But, therefore exist the demoulding to produce the unfavorable condition of concavo-convex or fold with the membrane portions attenuation, at the LED lens surface of institute's moulding owing to being surpasses yield point to extend.Therefore, actual conditions are in the resin moulded moulding of LED lens, still not have to be used as the film of the demoulding with film aptly.
The prior art document
Patent documentation
Patent documentation 1: japanese kokai publication hei 8-142105 communique
Patent documentation 2: TOHKEMY 2001-310336 communique
Patent documentation 3: TOHKEMY 2007-224311 communique
Summary of the invention
The problem that invention will solve
The present invention carries out in view of the above problems; Its purpose is to provide a kind of demoulding to use film; The fissility of itself and molding die and moulding article is excellent; And the shape of molding die is excellent according to the mold shape transfer printing property that design size is transferred to the moulding article, and can obtain the surface smoothing property of moulding article, and then also have the hear resistance under the serviceability temperature about 140 ℃.
The scheme that is used to deal with problems
This purpose is that the technical scheme through following (1)～(11) realizes.
(1) film is used in a kind of demoulding; It is characterized in that, this demoulding use film by JIS A hardness be more than 70, the Vickers softening temperature is that 100 ℃～180 ℃ polyurethane series elastomer constitutes separately or by constituting with the composition for thermoplastic elastomer of this polyurethane series elastomer as main component.
(2) use film like (1) described demoulding, it is characterized in that, the thermoplastic polyurethane based elastomers that the polyurethane series elastomer obtains for the reaction through these 3 kinds of compositions of polyisocyanates, polyalcohol and chain extender.
(3) use film like (2) described demoulding; It is characterized in that, polyalcohol be selected from the number-average molecular weight that belongs to the group of forming by PEPA, polyesteramide polyalcohol, polycarbonate polyol, PPG, polyester ether polylol and polyolefin polyhydric alcohol be in 500～10000 the macromolecule polyol more than a kind or 2 kinds.
(4) use film like (2) or (3) described demoulding, wherein, chain extender is selected from the number-average molecular weight that belongs to low molecular polylol class, the low polynary amine of molecule and low molecule alkamine less than 500 the compound bearing active hydrogen that contains.
(5) use film like each described demoulding of (1)～(4), it is characterized in that, composition for thermoplastic elastomer is the composition of fluorine class surfactant that contains the scope of 0.05 mass parts～5.0 mass parts with respect to polyurethane series elastomer 100 mass parts.
(6) use film like (5) described demoulding, it is characterized in that, fluorine class surfactant is that fusing point is below 250 ℃ and decomposition temperature is the perfluoro alkyl sulfonic acid derivative compound more than 300 ℃.
Like each described stripping film of (1)～(6), it is characterized in that (7) composition for thermoplastic elastomer also comprises the additive more than a kind or 2 kinds that belongs to lubricant, anti-blocking agent, anti-oxidant and phosphorous antioxidant.
(8) use film like each described demoulding of (1)～(7), it is characterized in that, the tensile modulus of elasticity of film film vertically (MD) and film horizontal (TD) all at 10N/mm
2～500N/mm
2Scope.
(9) use film like each described demoulding of (1)～(8), it is characterized in that, the film of 50% modulus (50%Mo) of film vertically (MD) and film laterally the ratio (MD)/(TD) of (TD) in 0.9～1.2 scope.
(10) use film like each described demoulding of (1)～(9), it is characterized in that, 50% modulus (50%Mo) of film and the ratio (100%Mo)/(50%Mo) of 100% modulus (100%Mo) film vertically (MD) and film horizontal (TD) all in 1.0～1.6 scope.
(11) use film like each described demoulding of (1)～(10), it is characterized in that, the tensile elongation of film film vertically (MD) and film horizontal (TD) all above 350%.
The effect of invention
Film is used in the demoulding according to the present invention; The fissility of molding die and moulding article is excellent; And the shape of molding die is excellent according to the mold shape transfer printing property that design size is transferred to the moulding article, and can obtain the surface smoothing property of moulding article, and then also have hear resistance.
Description of drawings
Fig. 1 is the side view of the bullet cut LED lens of embodiment of the present invention.
Fig. 2 (a) is the vertical view of molding die of the bullet cut LED lens of embodiment of the present invention.Fig. 2 (b) is the A-A direction of arrow sectional view of Fig. 2 (a) of molding die of the bullet cut LED lens of embodiment of the present invention.
Fig. 3 illustrates the figure of the demoulding of embodiment of the present invention with the signal formation of the film manufacturing device of film.
Fig. 4 is the sectional view of periphery of cast hopper that the film manufacturing device shown in Figure 2 of embodiment of the present invention is shown.
The specific embodiment
In order to achieve the above object; The inventor has carried out various researchs; The result finds; The following demoulding is excellent with the fissility of film and molding die and moulding article, and the shape of molding die is excellent according to the mold shape transfer printing property that design size is transferred to the moulding article, and can obtain the surface smoothing property of moulding article; And then also have a hear resistance, the said demoulding use film by JIS A hardness in the polyurethane series elastomer be more than 70, relative density be 1.05～1.30 and the Vickers softening temperature be that 100 ℃～180 ℃ polyurethane series elastomer constitutes separately or by constituting with the composition for thermoplastic elastomer of this polyurethane series elastomer as main component.
Through further research; The result finds; Through making composition for thermoplastic elastomer is the composition of fluorine class surfactant that contains the scope of 0.05 mass parts～5.0 mass parts with respect to polyurethane series elastomer 100 mass parts, and effect is better, has accomplished the present invention thus.
The thermoplastic polyurethane based elastomers that polyurethane series elastomer among the present invention obtains for the reaction through these 3 kinds of compositions of polyisocyanates, polyalcohol and chain extender.
As above-mentioned polyisocyanates, for example, can enumerate 2,4-toluene di-isocyanate(TDI), 2; 6-toluene di-isocyanate(TDI), xylenes-1,4-vulcabond, xylenes-1,3-vulcabond, 4,4 '-methyl diphenylene diisocyanate, 2; 4 '-methyl diphenylene diisocyanate, 2,2 '-methyl diphenylene diisocyanate, 4,4 '-diphenyl ether vulcabond, 2-nitro diphenyl-4,4 '-vulcabond, 2; 2 '-diphenyl propane-4,4 '-vulcabond, 3,3 '-dimethyl diphenylmethane-4; 4 '-vulcabond, 4,4 '-diphenyl propane vulcabond, m-benzene diisocyanate, PPDI, 1,4-naphthalene diisocyanate, 1; 5-naphthalene diisocyanate, 3,3 '-dimethoxy diphenyl-4,4 '-aromatic diisocyanate classes such as vulcabond; Aliphatic diisocyanate classes such as tetramethylene diisocyanate, hexamethylene diisocyanate, dodecane vulcabond, trimethyl hexamethylene diisocyanate, LDI; Alicyclic diisocyanate classes such as cyclohexane diisocyanate, dicyclohexyl methyl hydride diisocyanate, IPDI, HTDI, hydrogenated xylene diisocyanate, hydrogenated diphenyl methane diisocyanate, tetramethylxylene diisocyanate, norcamphane two methyl isocyanates; The biuret body of above-mentioned isocyanates, dimerization object, trimerization object, dimer-trimerization object, carbodiimide body, uretonimine body, by 2 officials can be above the reaction of polyalcohol etc. and above-mentioned isocyanates obtain add adult etc.In addition, can also enumerate the polyisocyanates that a part of stabilisation of utilizing the end-capping reagent that has 1 reactive hydrogen in methyl alcohol, n-butanol, phenmethylol, ethyl acetoacetate, epsilon-caprolactams, methyl ethyl ketone oxime, phenol, the cresols equimolecular to make NCO forms.They can use a kind of or two or more mixing are used.
Above-mentioned polyalcohol is that number-average molecular weight is 500～10000 macromolecule polyol, has PEPA, polyesteramide polyalcohol, polycarbonate polyol, PPG, polyester ether polylol, polyolefin polyhydric alcohol etc. in them.These macromolecule polyols can use a kind of or two or more mixing are used.
As PEPA, polyesteramide polyalcohol, can enumerate by polybasic carboxylic acid and polyalcohol, according to circumstances share diamines or amino alcohol, the material that obtains through condensation reaction.
As this polybasic carboxylic acid, butanedioic acid, adipic acid, decanedioic acid, dimeric dibasic acid, hydrogenated dimer acids, phthalic acid, phthalic acid alkyl esters, trimellitic acid, maleic acid, fumaric acid, itaconic acid etc. are for example arranged.In addition, can also enumerate the material that the ring-opening polymerisation through cyclic ester classes such as butyrolactone, valerolactone, caprolactones obtains.
As this polyalcohol, for example can enumerate ethylene glycol, 1,2-propane diols, 1, ammediol, 1; 2-butanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 2-methyl isophthalic acid; 5-pentanediol, 3-methyl isophthalic acid, 5-pentanediol, 1,6-hexylene glycol, 3-methyl isophthalic acid, 5-pentanediol, neopentyl glycol, 1; 8-ethohexadiol, 1,9-nonanediol, 2,2-diethyl-1, ammediol, 2-normal-butyl-2-ethyl-1; Ammediol, 2,2,4-trimethyl-1,3-pentanediol, 2-ethyl-1; 3-hexylene glycol, 2-hexadecane-1,2-ethylene glycol, 2-n-eicosane-1,2-ethylene glycol, 2-positive octacosane-1,2-ethylene glycol, diethylene glycol, DPG, 1; The oxirane of 4-cyclohexanedimethanol or bisphenol-A or propylene oxide adduct, hydrogenated bisphenol A, 3-hydroxyl-2,2-dimethyl propyl-3-hydroxyl-2, low molecular polylol classes such as 2-dimethyl propylene acid esters, trimethylolpropane, glycerine, pentaerythrite.As diamines or amino alcohol, for example can enumerate ethylenediamine, 1, the polynary amines of low molecule such as 6-hexamethylene diamine, benzene dimethylamine, IPD; Low molecule alkamines such as MEA, diethanol amine, triethanolamine.In addition, can enumerate with low molecular polylol, low molecule polyamine, low molecule amino alcohol as initator, the lactone that the ring-opening polymerisation through cyclic esters such as 6-caprolactone, gamma-valerolactone (lactone) monomer obtains is a PEPA.
As polycarbonate polyol, can enumerate the material that obtains through low molecular polylol used in above-mentioned PEPA synthetic, with the dealcoholization of divinyl carbonate, dimethyl carbonate, diethyl carbonate, diphenyl carbonate etc., dephenolize reaction etc.
As PPG; Can enumerate the polyethylene glycol that makes oxirane, expoxy propane, oxolane etc. carry out ring-opening polymerisation to form as initator with low molecular polylol used in the above-mentioned PEPA, low molecule polyamine, low molecule amino alcohol, polypropylene glycol, polytetramethylene glycol ether etc. and with the PPG that their copolymerization form, can also enumerate with above-mentioned PEPA, polycarbonate polyol polyester ether polyalcohol as initator.
As polyester ether polylol, can enumerate the part of the polyalcohol that in the condensation reaction when obtaining above-mentioned PEPA, uses or all in use the polyethers material that likewise obtains with PEPA.
As polyolefin polyhydric alcohol, can enumerate the polybutadiene of hydroxyl, through the polyisoprene of the polybutadiene of the hydroxyl of hydrogenation, hydroxyl, polyisoprene, the chlorinated polypropylene of hydroxyl, haloflex of hydroxyl etc. through the hydroxyl of hydrogenation.
Above-mentioned chain extender is a number-average molecular weight less than 500 the compound bearing active hydrogen that contains, and for example can enumerate above-mentioned low molecular polylol class, the polynary amine of above-mentioned low molecule, above-mentioned low molecule alkamine etc.
The elastomeric manufacturing of polyurethane series can be adopted known manufacturing approach, for example one-step method, prepolymer method, batch reactions method, successive reaction method, utilize kneader method, utilize the methods such as method of extruder.
About the elastomeric hardness of the polyurethane series that uses among the present invention, the JIS A hardness of the test method determination through JIS K 7311 is more than 70.And then, be under the situation more than 100 in JIS A hardness, preferably be suitable for D hardness, with D hardness is the upper limit below 70.This JIS A hardness is preferably more than 80, more preferably more than 90.If JIS A hardness is less than 60, when therefore the demoulding in moulding-forming equipment is with the transmission of film, there is the film extension in rubbery grow then and transmits unsettled unfavorable condition.On the other hand, under D hardness surpasses 70 situation, there is following unfavorable condition during extrusion molding: produce from gel as these 3 kinds of compositions of polyisocyanates, polyalcohol and chain extender of raw material.
Through the test method determination of JIS K 7206, the elastomeric Vickers softening temperature of the polyurethane series that uses among the present invention is 100 ℃～180 ℃ scope.This Vickers softening temperature is preferably 110 ℃～180 ℃, and more preferably 120 ℃～180 ℃, further preferably 130 ℃～180 ℃ scope.If the Vickers softening temperature less than 100 ℃, the unfavorable condition of fusion then can occur in use.That is, can't obtain hear resistance.On the other hand, be limited to 180 ℃ on the Vickers softening temperature, do not obtain to have the polyurethane series elastomer of the Vickers softening temperature that surpasses 180 ℃ as yet.
Fluorine class surfactant among the present invention is meant the perfluoro alkyl sulfonic acid derivative.As the concrete example of perfluoro alkyl sulfonic acid derivative, can enumerate trifluoromethane sulfonic acid potassium (CF
3SO
3K), trifluoromethyl sulfonate (CF
3SO
3Na), trifluoromethyl sulfonic acid lithium (CF
3SO
3Li), pentafluoroethyl group potassium sulfonate (C
2F
5SO
3K), pentafluoroethyl group sodium sulfonate (C
2F
5SO
3Na), pentafluoroethyl group sulfonic acid lithium (C
2F
5SO
3Li), seven fluoropropyl potassium sulfonate (C
3F
7SO
3K), seven fluoropropyl sodium sulfonate (C
3F
7SO
3Na), seven fluoropropyl sulfonic acid lithium (C
3F
7SO
3Li), nine fluorine butyl sulfonic acid potassium (C
4F
9SO
3K), nine fluorine butyl sulfonic acid sodium (C
4F
9SO
3Na), nine fluorine butyl sulfonic acid lithium (C
4F
9SO
3Fluorinated alkyl sulfonate such as Li).
In addition, can enumerate two (trifluoromethyl sulfonyl) acid imide sylvite ((CF
3SO
2)
2NK), two (trifluoromethyl sulfonyl) acid imide sodium salt ((CF
3SO
2)
2NNa), two (trifluoromethyl sulfonyl) acid imide ammonium salt ((CF
3SO
2)
2NNH
4), two (trifluoromethyl sulfonyl) acid imide lithium salts ((CF
3SO
2)
2NLi), two (pentafluoroethyl group sulfonyl) acid imide sylvite ((C
2F
5SO
2)
2NK), two (pentafluoroethyl group sulfonyl) acid imide sodium salt ((C
2F
5SO
2)
2NNa), two (pentafluoroethyl group sulfonyl) acid imide ammonium salt ((C
2F
5SO
2)
2NNH
4), two (pentafluoroethyl group sulfonyl) acid imide lithium salts ((C
2F
5SO
2)
2NLi), two (seven fluoropropyl sulfonyls) acid imide sylvite ((C
3F
7SO
2)
2NK), two (seven fluoropropyl sulfonyls) acid imide sodium salt ((C
3F
7SO
2)
2NNa), two (nine fluorine butyl sulfonyls) acid imide sylvite ((C
4F
9SO
2)
2NK), two (nine fluorine butyl sulfonyls) acid imide sodium salt ((C
4F
9SO
2)
2NNa), ring-HFC-236fa-1, two (sulfonyl) acid imide sylvite (CF of 3-
2(CF
2SO
2)
2NK), ring-HFC-236fa-1, two (sulfonyl) acid imide sodium salt (CF of 3-
2(CF
2SO
2)
2Perfluoroalkyl sulfimide salt such as NNa).
In addition; Can also enumerate with perfluoro alkyl sulfonic acid as the ionic liquid of anion kind, with two (perfluoroalkyl group sulfonyl) acid imide as the ionic liquid of anion kind, with two (fluorosulfonyl) acid imide as the ionic liquid of anion kind, with ring HFC-236fa-1, two (sulfonyl) acid imides of 3-are as the ionic liquid of anion kind etc.
In above-mentioned perfluoro alkyl sulfonic acid derivative, can suit to use fusing point is below 250 ℃ and decomposition temperature is the compound more than 300 ℃.As their concrete example, can enumerate trifluoromethane sulfonic acid potassium (CF
3SO
3K) or two (trifluoromethyl sulfonyl) acid imide sylvite ((CF
3SO
2)
2NK).
Fluorine class surfactant is in order to give lubricity to the demoulding with film and to be blended in the polyurethane series elastomer.Mixing through fluorine class surfactant; Therefore the film surface is endowed lubricity, can obtain following effect: make effect that the demoulding in the moulding-forming equipment becomes smooth-going with the transmission of film, prevent that when contact with molding die the demoulding is with effect, the raising of the fold of film and be used as the effect of fissility of the silicone-based resin combination of moulding resin.About its combined amount,, fluorine class surfactant is located at the scope of 0.05 mass parts～5.0 mass parts with respect to polyurethane series elastomer 100 mass parts.Combined amount can not show the effect of mixing during less than 0.05 mass parts.On the other hand, even mix to surpass 5.0 mass parts, effect can not increase yet, and exists fluorine class surfactant to ooze out on the film surface or the unfavorable condition on the surface of frosting, pollution moulding article.
In the scope of not damaging characteristic of the present invention, can mix other thermoplastic elastomer (TPE)s in the composition for thermoplastic elastomer of the present invention.As thermoplastic elastomer (TPE), for example, can enumerate polyester based elastomers, polyamide-based elastomer, polyvinyl chloride based elastomers, styrene series elastomer and olefin-based elastomer etc.Also can process bonding laminated film through this other thermoplastic elastomer (TPE)s are carried out coextrusion.
In the scope of not damaging characteristic of the present invention, for example can mixing in the composition for thermoplastic elastomer of the present invention, acid amides is that anti-blocking agents such as lubricant, silica, phenol such as wax are anti-oxidant, phosphorous antioxidant etc.
Film is used in the demoulding about among the present invention, the tensile modulus of elasticity of the film of under 23 ℃ of temperature, draw speed 100mm/min, measuring according to JIS Z 1702 film vertically (MD) and film horizontal (TD) all at 10.0N/mm
2～500N/mm
2Scope.This tensile modulus of elasticity is preferably at 20.0N/mm
2～400N/mm
2Scope, more preferably at 30.0N/mm
2～300N/mm
2Scope.If tensile modulus of elasticity is less than 10.0N/mm
2, then have following unfavorable condition: in moulding-forming equipment, extract the demoulding out when use film from coiling body, the tension force of film is more weak and occur relaxing.On the other hand, tensile modulus of elasticity surpasses 500N/mm
2The time, have following unfavorable condition: when in molding die, the demoulding being carried out vacuum draw with film, film does not extend, not with the molding die driving fit.
Film is used in the demoulding about among the present invention, the film of 50% modulus (50%Mo) of the film of under 23 ℃ of temperature, draw speed 100mm/min, measuring according to JIS Z 1702 vertically (MD) and film laterally the ratio (MD)/(TD) of (TD) be 0.90～1.20 scope.Should (MD)/(TD) preferably in 0.95～1.20 scope.Under the situation of the film through extrusion moulding and moulding, do not exist (MD)/(TD) less than 0.90 situation.On the other hand, (MD)/(TD) surpass at 1.20 o'clock, have following unfavorable condition: in moulding-forming equipment with the demoulding with film when molding die is supplied with, film produces fold.
Film is used in the demoulding about among the present invention, 50% modulus (50%Mo) of the film of under 23 ℃ of temperature, draw speed 100mm/min, measuring according to JIS Z 1702 and the ratio (100%Mo)/(50%Mo) of 100% modulus (100%Mo) film vertically (MD) and film laterally on (TD) all in 1.00～1.60 scope.Should (100%Mo)/(50%Mo) preferably in 1.00～1.50 scope.(100%Mo)/(50%Mo), there is following unfavorable condition less than 1.00 o'clock: the increase that can not produce stress along with the increase of the extension of film, therefore can't obtain the extension of uniform film, produce fold when in molding die, the demoulding being carried out vacuum draw with film.On the other hand, (100%Mo)/(50%Mo) surpass at 1.60 o'clock, have following unfavorable condition: along with the increase of the extension of film, the increase of stress is bigger, and film can not extend to fully and make the demoulding with film and the driving fit of molding die inner surface.
Film is used in the demoulding about among the present invention, the tensile elongation of the film of under 23 ℃ of temperature, draw speed 100mm/min, measuring according to JIS Z 1702 film vertically (MD) be more than 350% with film horizontal (TD).This tensile elongation is preferably more than 400%.There was following unfavorable condition in tensile elongation less than 350% o'clock: when in molding die, the demoulding being carried out vacuum draw with film, at the edge break of molding die.
The above-mentioned demoulding that is formed by composition for thermoplastic elastomer can come moulding through existing known method such as for example extrusion by melting or fusion-cast methods with film.
Below example in, enumerate extrusion by melting through using the T-die head with the method for not shining the film moulding.
The demoulding that utilizes such method to obtain obtains through following mode with film: use extruders such as single screw extrusion machine or double screw extruder; Characteristic according to composition for thermoplastic elastomer; Under the atmosphere after the air displacement that will be present in the gap in the extruder and between moulding material with nitrogen; Moulding material to composition for thermoplastic elastomer carries out melting mixing; Melt extrude the demoulding by the die lip of the T-die head front end that is disposed at the extruder front end and use film, this demoulding directly is clipped between crimping roller and the chill roll in the hauling machine with film cools off, perhaps from the both sides of crimping roller side and chill roll side or a side insert and clamp separator and cool off; Next batch on coiling tube successively with coiling machine, use film thereby obtain the demoulding.
Fig. 3 is that expression utilizes above-mentioned method to make the schematic pie graph of the demoulding with the film manufacturing device of film.And Fig. 4 is the sectional view of periphery of the cast hopper of film manufacturing device shown in Figure 3.Among Fig. 3, film manufacturing device roughly possesses cast hopper 2, extruder 1, T-die head 7, hauling machine 11, coiling machine 15 and constitutes.Cast hopper 2 is used to drop into moulding material, and is as shown in Figure 4, links to each other midway with extruder 1 at cast hopper 2, and nitrogen is supplied with managing 3 and inserted via distance piece 3a.And nitrogen is supplied with the approximate centre bending shaft with pipe 3 1c along the material input port, and its front end extends near the periphery that is set to the extrusion screw rod 1a in the extruder 1.When mixing with the extrusion screw rod 1a of extruder 1, when stirring into type material, using and supply with in the moulding material that the nitrogen replacement supplied with pipe 3 drops into by cast hopper 2 or the oxygen that is contained in the extruder 1 by nitrogen.
When extruder 1 utilizes extrusion screw rod 1a to be mixed into type material, transmit moulding material along the arrow B direction, through the electric calorifie installation in the machine barrel 1b that is assembled into extruder 1 with moulding material heating, fusion.So, the moulding material that is melted and is transmitted is sent to filter element 5 through tube connector shown in Figure 34.Then, utilize filter element 5,, the moulding material after the fusion is delivered to gear pump 6 the moulding material separation of not fusion.Gear pump 6 improves the pressure of the moulding material after the fusion, extrudes the melt molding material to T-die head 7 simultaneously.T-die head 7 is extruded the melt molding material with predetermined pressure, is molded the film 8 of predetermined thickness, preset width by the die lip 7a of T-die head 7.The film 8 of moulding is towed on the outer peripheral face of chill roll 10 of hauling machine 11 on one side like this, with crimping roller 9 is adjusted to predetermined thickness on one side, and then cooling, solidify, and is sent to coiling machine 15 with transmission pair roller 12,13.
In the coiling machine 15, film 8 is guided by guide reel 15a, 15b, 15c, and is batched by coiling tube 16.Need to prove, between transmission pair roller 12,13 and guide reel 15a, be equipped with thickness tester 14,, the peripheral speed degree of chill roll 10 is adjusted, controlled, to reach desirable thickness based on the thickness that utilizes thickness tester 14 to measure.So form the above-mentioned demoulding and use film.
The demoulding forms surface configuration accordingly with film and the required surface configuration of moulding article and gets final product.For example, be under the situation of minute surface on its surfaces such as LED, film is used in the demoulding that use is processed minute surface with the surface of film.Therefore and IC or LSI etc. are formed with micro concavo-convex on its surface, use in the demoulding and use film with the demoulding that the surface of film has formed micro concavo-convex.
As forming the method for the demoulding with the surface configuration of film; The surface is processed under the situation of minute surface; Following method is arranged: in advance minute surface is processed on the surface of above-mentioned metal chill roll; The demoulding that utilizes crimping roller will be in molten condition is connected to this chill roll with mould, the demoulding is used the surfacing of film be minute surface.In addition, use under the situation of separator, following method is arranged: use accurately machined PET film of minute surface or OPP film as separator, with its surface transfer.
Among Fig. 3,, separator 18a is supplied with to the direction of arrow,, separator 18b is supplied with to the direction of arrow from outlet roller 17b in chill roll 10 1 sides of film 8 from outlet roller 17a in crimping roller 9 one sides of film 8, thus can be by the surface configuration of separator transfer film 8.After having the film 8 of separator 18a, 18b temporarily to batch the two-sided lamination, peel off separator 18a, 18b and batch film 8, can obtain having the mold release film of predetermined surface shape thus.
Form under the situation of micro concavo-convex on the surface of the demoulding with film; Following method is arranged: the outer peripheral face at above-mentioned metal chill roll forms micro concavo-convex in advance; When the demoulding that utilizes crimping roller will be in molten condition is connected to this chill roll with mould, make the micro concavo-convex that is formed at the chill roll outer peripheral face be transferred to the demoulding with the film surface.In addition, use under the situation of separator, following method is arranged: use PET film or OPP film that delustring processing has been carried out on the surface as separator, with its surface transfer.
Process the demoulding under the situation of minute surface with the surface of film; As long as suitably form the surface in the following manner: about its surface roughness; Is below 0.10 according to JIS B0601-2001 with the arithmetic average roughness Ra that speed 0.6 mm/second, cutoff value 0.8mm, evaluation length 8.0mm are measured, and maximum height of the profile Rz is below 1.00.If arithmetic average roughness Ra is below 0.10 and maximum height of the profile Rz is below 1.00, then transfer printing has the demoulding to become level and smooth with the surface of the moulding article on the surface of film.
Form under the situation of micro concavo-convex with the surface of film in the demoulding, as long as suitably form the surface in the following manner: about its surface roughness, with the arithmetic average roughness Ra of above-mentioned same mensuration be more than 0.5, maximum height of the profile Rz is more than 5.00.
For film, thickness is in the scope of 5 μ m～500 μ m, preferably in the scope of 10 μ m～400 μ m for the demoulding of the present invention, gets final product according to suitable selection of shape of employed molding die.Under thickness the situation less than 5 μ ms of the demoulding with film, have following unfavorable condition: when following molding die in use, the demoulding is extended attenuation with film and broken, and is perhaps damaged, therefore not preferred because of the pressure of moulding resin.In addition, when surpassing under the situation of 500 μ m, have following unfavorable condition: the demoulding becomes obstacle with the thickness of film, can't follow the molding die with fine structure; Perhaps can't be with shape transferred thereon to the moulding article of the complicacy of molding die, therefore not preferred.
Embodiment
Below, using table 1, table 2, the embodiment with film describes to the demoulding of the present invention.
Need to prove that the demoulding of the present invention does not receive any qualification of embodiment 1～8 with film.
Here, the carbamate based elastomers 1 shown in table 1, the table 2, fluorine class surfactant 1 and fluorine class surfactant 2 use material as follows.
(carbamate based elastomers 1)
Miractran E598PNAT: 141 ℃ of the manufacturings of trade name, Japanese polyurethane industry society, JIS A hardness 98, Vickers softening temperature
(fluorine class surfactant 1)
Eftop EF-N112: trade name, Mitsubishi General Materials society make, two (trifluoromethyl sulfonyl) acid imide sylvite ((CF
3SO
2)
2NK), fusing point is 200 ℃
(fluorine class surfactant 2)
Eftop EF-12: trade name, Mitsubishi General Materials society make, trifluoromethane sulfonic acid potassium (CF
3SO
3K), fusing point is 233 ℃
[table 1]
[table 2]
[table 3]
Below, based on table 1, table 2, making, fissility, hear resistance, die size transfer printing property, surface smoothing property and the actual usability of the demoulding with film is elaborated.Need to prove that these are the contents that are suitable for too in the comparative example 1～3 of table 3.
(demoulding is with the making of film)
Composition for thermoplastic elastomer is supplied in the single screw extrusion machine (manufacturing of IKG society) of
L/D=25; Use the full thread extrusion screw rod of compression ratio 2.5; Melting mixing under the condition of 180 ℃～210 ℃ of barrel temperatures is extruded by the T-die head of wide 400mm under the condition of 210 ℃～220 ℃ of die head temperatures continuously.Use film for this demoulding of extruding, in hauling machine, the PET film is processed in delustring and supplied with, mirror finish PET film is supplied with as separator, they are clipped between crimping roller and the chill roll cool off from the chill roll side as separator from the crimping roller side.In coiling machine with the slit cutter with the both ends severing, the demoulding is batched in coiling tube with film, film is used in the demoulding of making width 250mm, length 50m with the thickness of table 1～table 3 record thus.Use film for these demouldings, under 80 ℃ atmosphere, leave standstill and wore out in 24 hours.Behind aging the end, will as delustring processing PET film and the mirror finish PET film of separator peel off on one side again reel mold release film on one side, obtain estimating the mold release film of usefulness.
(method of evaluation)
In the evaluation; Use possesses Fig. 2 (a) of lens shape shown in Figure 1, the molding die 30 of the formation shown in Fig. 2 (b); After making the demoulding be adsorbed in molding die 30 with film; The dropping organosilicon resin composition carries out hot-forming, respectively fissility, hear resistance, die size transfer printing property, surface smoothing property is estimated.
Specifically, the demoulding is set uses film, make that the demoulding uses the delustring face of film to be molding die 30 sides for molding die 30, minute surface is an air side, carries out vacuum draw, so that the demoulding is adsorbed in molding die 30 with film.Next, drip organosilicon resin composition RHODORSIL RTV141 (BLUESTAR SILICONES manufactured) on film, push the flat plate mold of surface above that, undertaken hot-forming by two mould holding through hard plating in the demoulding.The demoulding of the lamination article after the moulding is estimated with the die size transfer printing property and the surface smoothing property of the hear resistance of film, the organic siliconresin that solidified with the fissility of film and the organic siliconresin that has solidified, the demoulding.Hot-forming at 140 ℃ of temperature, pressure 10kg/cm
2, implement under 5 minutes the condition.
(fissility)
About the evaluation of fissility, can peel off, and the organosilicon resin composition that has solidified do not residue in the demoulding and is shown " zero " with the information slip on the film organosilicon resin composition partial rupture and residue in the demoulding and be shown " * " with the information slip on the film.
(hear resistance)
About stable on heating evaluation, visualization has been peeled off the demoulding of the organosilicon resin composition that has solidified and has been used film, no fusion, fusing and kept the information slip of film shape to be shown " zero ", and the demoulding exists the information slip of fusion, fusing to be shown " * " with film.
(die size transfer printing property)
About die size transfer printing property, the size of the organosilicon resin composition that solidified is measured and estimated.With the metewand of lens height be made as from hole depth 4mm deduct size that the demoulding obtains with the thickness of film further-0.1mm is with interior scope, promptly ((the 4-demoulding is with the thickness of film)-0.1) is more than the mm.25 lens all are shown " zero " at benchmark with interior information slip, exist the information slip of the shape (even if 1) that does not satisfy benchmark to be shown " * ".
(surface smoothing property)
About surface smoothing property, the surface state of the organosilicon resin composition that visual valuation has solidified.The information slip that the surface of organic siliconresin does not produce concavo-convex or fold is shown " zero ", and the information slip that has produced concavo-convex or fold is shown " * ".
(actual usability)
About actual usability, confirm and estimate through in moulding-forming equipment, carrying out resin moulded moulding.Specifically; In moulding-forming equipment G-LINE manual press (trade name) as the APIC YAMADA manufactured of molding apparatus; Use RHODORSIL RTV141 (BLUESTAR SILICONES manufactured) as organosilicon resin composition, through the actual usability of Visual Confirmation.
In the evaluation of actual usability, be " zero ": so that the lax mode of film is supplied with, on film, do not have the generation of fold during absorption when in moulding-forming equipment, transmitting the demoulding with film with following STA representation; After hot-forming; The demoulding is good with the fissility of film and organosilicon resin composition, and the surperficial no concave-convex of the organosilicon resin composition after solidifying or fold be and level and smooth, and the demoulding does not have breakage or fusing with film; No organosilicon resin composition residual, molding die does not have dirt; Exist the information slip of any unfavorable situation to be shown " * ".
As shown in table 3, in the comparative example 1, the film of the ETFE film made from Asahi Glass society, the thickness 100 μ m of Aflex (trade name) is as comparison other, and die size transfer printing property is relatively poor, can't obtain actual usability.In the comparative example 2, the film of the ETFE film made from Asahi Glass society, the thickness 25 μ m of Aflex (trade name) is as comparison other, and film is damaged during absorption in molding die, can't obtain actual usability.In the comparative example 3, to the east of the Hytrel5577 (trade name) that makes of beautiful E.I.Du Pont Company, promptly by polyester copolyether, D hardness be 55 and the Vickers softening temperature be thickness that 192 ℃ composition for thermoplastic elastomer constitutes be the demoulding of 50 μ m with film as comparison other.Surface at the moulding article that formed by organosilicon resin composition produces fold, and surface smoothing property is poor, can't obtain actual usability.
With respect to this, shown in table 1, table 2, but the demoulding of each embodiment of knowledge capital invention has not only obtained fissility with film, also has hear resistance, and die size transfer printing property and surface smoothing property excellence, and then has also given actual usability.Thus, according to the present invention, can obtain to use film with the demoulding fissility of the resulting moulding article of moulding resin processing and forming is excellent and that can obtain the moulding article of shape and superficiality excellence.
More than, use embodiment that the present invention has been described, be self-evident but technical scope of the present invention is not limited to the scope this point that above-mentioned embodiment puts down in writing.It will be apparent to one skilled in the art that and to apply various distortion or improvement to above-mentioned embodiment.And according to the record of claims, the form that has obviously applied such distortion or improvement is also contained in the technical scope of the present invention.
Symbol description
1 extruder
2 cast hoppers
3 nitrogen are supplied with pipe
4 tube connectors
5 filters
6 gear pumps
7 T-die heads
The 7a die lip
8 films
9 crimping rollers
10 chill rolls
11 hauling machines
12,13 transmit pair roller
14 thickness testers
16 coiling tube
17a, 17b outlet roller
18a, 18b separator
20 bullet cut LED lens
21a, 21b lead-in wire
30 molding dies
31 lens moulding recesses.
Claims (11)
1. film is used in a demoulding; It is characterized in that, this demoulding use film by JIS A hardness be more than 70, the Vickers softening temperature is that 100 ℃～180 ℃ polyurethane series elastomer constitutes separately or by constituting with the composition for thermoplastic elastomer of this polyurethane series elastomer as main component.
2. film is used in the demoulding as claimed in claim 1, it is characterized in that, the thermoplastic polyurethane based elastomers that above-mentioned polyurethane series elastomer obtains for the reaction through these 3 kinds of compositions of polyisocyanates, polyalcohol and chain extender.
3. film is used in the demoulding as claimed in claim 2; It is characterized in that, above-mentioned polyalcohol be selected from the number-average molecular weight that belongs to the group of forming by PEPA, polyesteramide polyalcohol, polycarbonate polyol, PPG, polyester ether polylol and polyolefin polyhydric alcohol be in 500～10000 the macromolecule polyol more than a kind or 2 kinds.
4. use film like the claim 2 or the 3 described demouldings, wherein, above-mentioned chain extender is selected from the number-average molecular weight that belongs to low molecular polylol class, the low polynary amine of molecule and low molecule alkamine less than 500 the compound bearing active hydrogen that contains.
5. use film like each described demoulding of claim 1～4; It is characterized in that above-mentioned composition for thermoplastic elastomer is the composition of fluorine class surfactant that contains the scope of 0.05 mass parts～5.0 mass parts with respect to above-mentioned polyurethane series elastomer 100 mass parts.
6. film is used in the demoulding as claimed in claim 5, it is characterized in that, above-mentioned fluorine class surfactant is that fusing point is below 250 ℃ and decomposition temperature is the perfluoro alkyl sulfonic acid derivative compound more than 300 ℃.
7. like each described stripping film of claim 1～6, it is characterized in that above-mentioned composition for thermoplastic elastomer also comprises the additive more than a kind or 2 kinds that belongs to lubricant, anti-blocking agent, anti-oxidant and phosphorous antioxidant.
8. use film like each described demoulding of claim 1～7, it is characterized in that, the tensile modulus of elasticity of film at the vertical MD of film and the horizontal TD of film all at 10N/mm
2～500N/mm
2Scope.
9. use film like each described demoulding of claim 1～8, it is characterized in that, the vertical MD of film of 50% modulus 50%Mo of film and the ratio (MD)/(TD) of the horizontal TD of film are in 0.9～1.2 scope.
10. use film like each described demoulding of claim 1～9, it is characterized in that, 50% modulus 50%Mo of film and the ratio (100%Mo)/(50%Mo) of 100% modulus 100%Mo at the vertical MD of film and the horizontal TD of film all in 1.0～1.6 scope.
11. film is used in each the described demoulding like claim 1～10, it is characterized in that, the tensile elongation of film at the vertical MD of film and the horizontal TD of film all above 350%.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011076089A JP5288422B2 (en) | 2011-03-30 | 2011-03-30 | Release film |
| JP2011-076089 | 2011-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102729369A true CN102729369A (en) | 2012-10-17 |
Family
ID=46986005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100844557A Pending CN102729369A (en) | 2011-03-30 | 2012-03-27 | Demolding die |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5288422B2 (en) |
| KR (1) | KR20120111959A (en) |
| CN (1) | CN102729369A (en) |
| TW (1) | TWI527856B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5408628B2 (en) * | 2011-03-30 | 2014-02-05 | 信越ポリマー株式会社 | Release film |
| KR20140106691A (en) * | 2011-12-22 | 2014-09-03 | 다이킨 고교 가부시키가이샤 | Mold release film |
| JP5541468B2 (en) * | 2012-02-20 | 2014-07-09 | 信越ポリマー株式会社 | Release film |
| CN107541053A (en) * | 2017-09-04 | 2018-01-05 | 瑞安市鸿日塑胶有限公司 | Ameliorative TUP films |
| JP6691194B2 (en) * | 2018-12-04 | 2020-04-28 | 積水化学工業株式会社 | Release film for semiconductor mold |
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| JPH0726085Y2 (en) * | 1990-07-06 | 1995-06-14 | 大倉工業株式会社 | Release sheet for foam molding |
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| KR101446928B1 (en) * | 2007-12-26 | 2014-10-06 | 루브리졸 어드밴스드 머티어리얼스, 인코포레이티드 | Multi-layer transparent sheet having electrostatic dissipative properties |
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- 2011-03-30 JP JP2011076089A patent/JP5288422B2/en not_active Expired - Fee Related
-
2012
- 2012-01-11 KR KR1020120003257A patent/KR20120111959A/en not_active Application Discontinuation
- 2012-03-22 TW TW101109944A patent/TWI527856B/en not_active IP Right Cessation
- 2012-03-27 CN CN2012100844557A patent/CN102729369A/en active Pending
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Also Published As
| Publication number | Publication date |
|---|---|
| JP5288422B2 (en) | 2013-09-11 |
| TW201239032A (en) | 2012-10-01 |
| JP2012206490A (en) | 2012-10-25 |
| KR20120111959A (en) | 2012-10-11 |
| TWI527856B (en) | 2016-04-01 |
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