CN103770250A - Die and method for manufacturing crystalline and thermoplastic resin forming body - Google Patents
Die and method for manufacturing crystalline and thermoplastic resin forming body Download PDFInfo
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- CN103770250A CN103770250A CN201310492677.7A CN201310492677A CN103770250A CN 103770250 A CN103770250 A CN 103770250A CN 201310492677 A CN201310492677 A CN 201310492677A CN 103770250 A CN103770250 A CN 103770250A
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Abstract
The present invention relates to a die and a method for manufacturing a crystalline and thermoplastic resin forming body, and provides the technology for manufacturing the crystalline and thermoplastic resin forming body which enables crystallization of a crystalline and thermoplastic resin to be fully carried out and has a smooth surface. The die has a die cavity used for manufacturing the crystalline and thermoplastic resin forming body, and is provided with a first die, a second die arranged faced to the first die, a thermal insulation layer formed on at least a part of a metal face at the die cavity side of the first die and the second die and composed of porous ceramics, and a metal coating formed on the surface of the thermal insulation layer, wherein the thickness of the thermal insulation layer is above 200 [mu]m, the thickness of the metal coating is larger than 50 [mu]m and lower than 100 [mu]m, approximately the whole surface of the metal coating is a transfer face for transferring a smooth face to the crystalline and thermoplastic resin forming body.
Description
Technical field
The present invention relates to mould and use this mould to manufacture the method for crystalline thermoplastic resin-formed body.
Background technology
Crystalline thermoplastic resin, compared with amorphism thermoplastic resin, in aspect excellences such as mechanical strengths, therefore uses in many fields such as the exterior member of Shell Plate, automobile and in-built member of household electrical appliance.As mentioned above, although crystalline thermoplastic resin has excellent physical property, in crystalline thermoplastic resin, also there is the slow-footed crystalline thermoplastic resin of crystallization.
So known have pair crystalline thermoplastic resin-formed body to heat-treat, and makes the method for the crystalline thermoplastic resin crystallization in crystalline thermoplastic resin-formed body.But, from improving the viewpoint of productivity ratio of crystalline thermoplastic resin-formed body, it is desirable to, do not heat-treat and advance the method for the crystallization of crystalline thermoplastic resin.
In addition, in patent documentation 1, proposed to be further formed with on the surface of the thermal insulation layer being formed by pottery the mould of the overlay film take nickel as main component.But the mould of recording is using amorphism thermoplastic resin as object, and reckon without the crystallization of crystalline thermoplastic resin in patent documentation 1.
prior art document
patent documentation
Patent documentation 1: TOHKEMY 2004-175112 communique
Summary of the invention
the problem that invention will solve
In addition,, according to the difference of the purposes of crystalline thermoplastic resin-formed body, there is the situation of the surface smoothing of expecting crystalline thermoplastic resin-formed body.
The object of the invention is to, be provided for manufacture and make the crystallization of crystalline thermoplastic resin carry out fully and have the technology of level and smooth surperficial crystalline thermoplastic resin-formed body.
for the scheme of dealing with problems
The discoveries such as the inventor, utilization possesses the thermal insulation layer of regulation and the mould of metal coating or has the mould of thermal insulation layer, metal coating and the DLC carbon-coating of regulation, can manufacture and make the crystallization of crystalline thermoplastic resin carry out fully and there is level and smooth surperficial crystalline thermoplastic resin-formed body, thereby complete the present invention.More specifically, the invention provides following technical scheme.
(1) mould, it is the mould having for the manufacture of the die cavity of crystalline thermoplastic resin-formed body,
Described mould has the second mould of the first mould and configuration relative to above-mentioned the first mould,
And described mould possesses thermal insulation layer that form, that be made up of porous ceramics at least a portion of the metal covering of the cavity side of above-mentioned the first mould and above-mentioned the second mould, and
The metal coating forming on the surface of above-mentioned thermal insulation layer, wherein,
The thickness of above-mentioned thermal insulation layer is more than 200 μ m,
The thickness of above-mentioned metal coating is more than 50 μ m and below 100 μ m,
The surperficial roughly all surfaces of above-mentioned metal coating is the transfer surface to crystalline thermoplastic resin-formed body transfer printing even surface.
(2), according to the mould (1) described, it also possesses the DLC carbon-coating forming on the surface of above-mentioned metal coating.
(3) according to the mould (1) or (2) described, wherein, above-mentioned the first mould and above-mentioned the second mould are made up of stainless steel.
(4), according to the mould described in any one in (1)～(3), wherein, above-mentioned metal coating is the layer take nickel as main component.
(5) manufacture method for crystalline thermoplastic resin-formed body, it comprises that the mould described in any one in use (1)～(4) carries out the operation of moulding to crystalline thermoplastic resin or crystalline thermoplastic resin combination.
the effect of invention
Utilize mould of the present invention, can manufacture the crystallization of crystalline thermoplastic resin is carried out and the surperficial crystalline thermoplastic resin-formed body with specularity fully.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that represents the section of the die cavity of the mould of an embodiment of the invention.
Fig. 2 is the schematic diagram that represents the section of the die cavity of the mould of an embodiment of the invention.
Fig. 3 is the schematic diagram that represents the section of the die cavity of the mould of an embodiment of the invention.
description of reference numerals
10 first moulds
101 first die main bodies
20 second moulds
201 second die main bodies
30 thermal insulation layers
40 metal coatings
50 die cavitys
60 die inserts
The specific embodiment
Below, describe for embodiments of the present invention, but the present invention is not subject to any restriction of following embodiment, can apply suitable change and implement in the scope of object of the present invention.
Mould of the present invention is the mould for the manufacture of crystalline thermoplastic resin-formed body.First, the material that forms crystalline thermoplastic resin-formed body is described.The material that forms crystalline thermoplastic resin-formed body is crystalline thermoplastic resin or crystalline thermoplastic resin combination.
As crystalline thermoplastic resin, be not particularly limited, for example can list polyvinyl resin, acrylic resin, polyamide, polyacetal resin, modified polyphenylene ether resin, pet resin, polybutylene terephthalate (PBT) resin, PEN resin, polyarylene sulfide resin, polyimide resin, polyamide-imide resin, polyetherimide resin, polysulfone resin, polyethersulfone resin, polyether ketone resin, polyether-ether-ketone resin, liquid-crystalline resin, fluororesin, thermoplastic elastomer (TPE), various Biodegradable resins etc.When crystalline thermoplastic resin-formed body is made up of crystalline thermoplastic resin, can be formed by two or more crystalline thermoplastic resins.
In crystalline thermoplastic resin, engineering properties, the electrical properties etc. such as polyarylene sulfide resin, polybutylene terephthalate (PBT) resin, polyacetal resin, liquid crystalline resin are excellent, processability is good, are therefore used to various uses.In the time for example requiring, in the purposes of specularity (, casing component, the sliding component using in outside, light reflection requires good aesthetic appearance parts with products formed etc.) these resins of use, can give preferred specularity by the present invention.
Polyarylene sulfide resin refer to repetitive mainly by-(Ar-S)-(wherein, Ar is arlydene) form resin.In the present invention, can use the polyarylene sulfide resin of conventionally known molecular structure.As arlydene, for example, can list to phenylene, metaphenylene, adjacent phenylene, substituted phenylene, p p '-diphenylene sulfuryl, p, p '-xenyl, p, p '-diphenylene ether, p, p '-diphenylene carbonyl, naphthyl etc.Polyarylene sulfide resin except for using the polymer of identical repetitive, homopolymers, can being also the copolymer that comprises different types of repetitive in the arylene sulfide ether being made up of above-mentioned arlydene.As homopolymers, particularly preferably use using the polyphenylene sulfide as repetitive to poly (phenylene sulfide) ether, described to poly (phenylene sulfide) ether use to phenylene as arlydene.In addition,, as copolymer, can use the different two or more combination in the arylene sulfide ether being formed by above-mentioned arlydene.In addition, as polyarylene sulfide resin, except the polyarylene sulfide resin that is essentially straight chain structure by 2 functionality halogenated aromatic compounds are obtained by polycondensation as the monomer of main body, also can use part to be formed with the polyarylene sulfide resin of branched structure or cross-linked structure.
Polybutylene terephthalate (PBT) resin is to instigate that at least to comprise the dicarboxylic acids composition of terephthalic acid (TPA) or its ester formative derivative (low-carbon-ester etc.) and at least comprise carbon number be the polybutylene terephthalate (PBT) resin that the diol component polycondensation of 4 aklylene glycol (BDO) or its ester formative derivative obtains.Polybutylene terephthalate (PBT) resin is not limited to equal polybutylene terephthalate (PBT) resin, also can be for containing the copolymer of 60 % by mole of above (particularly 75～95 % by mole of left and right) mutual-phenenyl two acid bromide two alcohol ester unit.As comonomer composition, can list terephthalic acid (TPA) dicarboxylic acids, BDO glycol in addition etc. in addition.
Polyacetal resin refers to only by Oxymethylene (CH
2o-) Copolyacetal that contains other comonomer unit except Oxymethylene as the polyacetal homopolymer of construction unit and as construction unit.In comonomer unit, comprise oxygen C2-6 alkylidene unit (for example oxygen ethylidene (CH
2cH
2o-), the oxygen C2-4 alkylidene unit such as oxygen propylidene, oxygen tetramethylene).In the time that polyacetal resin is Copolyacetal, also can be for the terpolymer that formed by three kinds of compositions etc.Copolyacetal, except random copolymer, can also be block copolymer, graft copolymer etc.In addition, polyacetals is not only linear structure, can be also branched structure, can also have cross-linked structure.And then the end of polyacetals also can be by with esterification of the such as carboxylic acid such as acetic acid, propionic acid or their acid anhydrides etc. and stabilisation.
Liquid-crystalline resin refers to the melt processable polymer with the character that can form optics anisotropic melting phase.The character of anisotropic melting phase can be confirmed by the conventional polarised light inspection method of utilizing cross-polarization sheet.More specifically, anisotropic melting approves to implement by the melting sample that uses Leitz polarization microscope, above load at the hot workbench of Leitz (hot stage) with the multiplying power observation of 40 times under nitrogen atmosphere mutually really.When liquid-crystalline polymer checks between cross-polarization sheet, even for example under melting inactive state, polarised light also sees through conventionally, optically shows anisotropic.As liquid-crystalline resin, for example, can list aromatic polyester, aromatic polyester acid amides etc.
In the time that crystalline thermoplastic resin-formed body is made up of crystalline thermoplastic resin combination, in crystalline thermoplastic resin combination, also contain the composition except crystallinity thermoplastic resin.As the composition except crystallinity thermoplastic resin, can list the additives such as the stabilizing agents such as hardening agent, antioxidant such as amorphism thermoplastic resin, inorganic filler, fire retardant, colouring agent (dyestuff, pigment etc.), lubricant.
Below, with reference to accompanying drawing, mould of the present invention is described.
Mould of the present invention shown in Fig. 1 possesses the first mould 10 and the second mould 20.The second mould 20 and the relative configuration of the first mould 10, form die cavity 50 by the first mould 10 and the second mould 20.It should be noted that, die cavity refers to that mould inside wants whole spaces of potting resin.
The first mould 10 possesses the first die main body 101.In addition, the second mould 20 possesses the metal coating 40 that the second die main body 201, thermal insulation layer 30 and the surface at thermal insulation layer 30 form.The in the situation that of this mould, the major part of die cavity is present in the first die side.
The first die main body 101 and the second die main body 201 are made up of metal.As metal, normally used metal in the manufacture of mould can be used, for example, stainless steel (SUS420J2 etc.), alloy tool steel (SKD11, SKD12, SKD61, SK3 etc.), high-speed steel (SKH151 etc.), carbon steel (S55C, SCM440 etc.), nonferrous alloy (aluminium alloy, copper beryllium alloy etc.) etc. for structure can be listed.
The first mould and/or the second mould also can have respectively die insert (so-called mold cores) structure.As the mould with this structure, can exemplify the mould of recording in Fig. 2.In Fig. 2, the second mould 20 has die insert Agencies to be made, and is provided with die insert 60.Having in the mould of die insert structure, part or all face of with the die cavity relative face of thermal insulation layer in die insert forms, and then surperficial part or all surface relative with die cavity of this thermal insulation layer of metal coating in die insert forms.
In the mould exemplifying in Fig. 1, the first die main body 101 has the surface of concavity.This part with concave surface forms the space of die cavity.At this, " concavity " refers to and shape is not particularly limited pit, can make suitably preferred shape according to the shape of the crystalline thermoplastic resin-formed body of wanting to obtain.Therefore, as concavity, except the such shape that is recessed into square configuration shown in Fig. 1, also comprise be recessed into bowl-shape shape, be recessed into the shape of V word, more complicated shape.In addition, in Fig. 1, the second die main body 201 does not have the surface of the concavity as the first die main body 101, but can the second die main body has the surface of concavity and the first die main body yet and have the surface of concavity, and only the second die main body has the surface of concavity.When only the second die main body has concavity surperficial, the first die main body can have the surface of the convex corresponding with the concavity of the second die main body.As the mould with such structure, can exemplify the mould of recording in Fig. 3.The formed body being obtained by the mould of the shape of recording in Fig. 3 can be used as for example lamp reflector aptly.
Relative by the face that the surface of concavity of face relative with the first mould in the surface of the second mould and the first die main body is formed, in formation space, the inside of mould (being tabular space in Fig. 1).Form first mould in this space and the metal covering of the second mould for " metal covering of the cavity side of the first mould and the second mould ".
Thermal insulation layer arranges at least a portion of the metal covering of the cavity side of the first die main body and/or the second die main body.In Fig. 1, thermal insulation layer forms in a part for the face relative with die cavity 50 of the second die main body 201.
In Fig. 1, thermal insulation layer 30 only forms in the part of the face relative with the first mould 10 in the second mould 20, but also can on whole faces of the face relative with the first mould, thermal insulation layer be set.While only forming thermal insulation layer in a part for the face relative with the first mould, as long as at least form the effect of heat insulation that just can obtain expectation in a part for the face relative with die cavity.
As shown in Figure 1, when thermal insulation layer 30 only forms in the part of the face relative with the first mould 10 in the second mould 20, in the second die main body 201, can be provided for configuring the pit of thermal insulation layer.
Thermal insulation layer is made up of porous ceramics.By forming thermal insulation layer by porous ceramics, can form concavo-convexly on the surface of thermal insulation layer, therefore the surface of thermal insulation layer is rough.
From the effect of heat insulation that can obtain expecting, the viewpoint that promotes the crystallization of crystalline thermoplastic resin, the thickness of thermal insulation layer is more than 200 μ m, more preferably more than 500 μ m and below 1000 μ m.The thickness of thermal insulation layer is 500 μ m when above, and the viewpoint uprising from the intensity of the thermal insulation layer that is made up of porous ceramics is preferred.In addition, the thickness of thermal insulation layer is 1000 μ m when following, is preferred from shortening the viewpoint of molding cycle.
As the porous ceramics that forms thermal insulation layer, preferably use porous zirconia.As the zirconia containing in porous zirconia, be not particularly limited, for stabilized zirconia, partially stabilized zirconia, stabilized zirconia all can not.As contained stabilization agent in stabilized zirconia, partially stabilized zirconia, can adopt known conventional substances in the past.It should be noted that, can be used in combination and be selected from stabilized zirconia, partially stabilized zirconia and at least two or more in stabilized zirconia not.
It should be noted that, also can use porous zirconia porous ceramics in addition, porous zirconia durability compared with other porous ceramics is high.Therefore, be formed with the mould of the thermal insulation layer being made up of porous zirconia if use, be not easy to produce the rough sledding such as distortion of thermal insulation layer, the quantity productivity ratio many, formed body of formed body that therefore can be continuously shaped is very high.
The method that forms thermal insulation layer at metal covering is not particularly limited, preferably adopts metallikon.By adopting metallikon, easily the thermal conductivity factor of thermal insulation layer, mechanical strength are adjusted to the scope of expectation.The formation of the thermal insulation layer based on spraying plating for example can be carried out as follows.First, make raw materials melt become liquid.This liquid is accelerated and make its collision metal covering.Finally, the raw material that make collision, adheres to solidifies.By as above operating, form very thin thermal insulation layer.By further making the raw material of melting collide and be solidificated on this very thin thermal insulation layer, can adjust the thickness of thermal insulation layer.It should be noted that, make the curing method of raw material can use existing known cooling way, also can it be solidified by simple placement.It should be noted that, method of spray plating is not particularly limited, can from the existing known methods such as arc spraying, plasma spraying, flame coating, suitably select preferred method.While forming the thermal insulation layer of porous ceramics, as the preferred method beyond metallikon, can list the method that the pottery of pulp-like is applied to metal covering and makes its sintering.
Metal coating is the layer take nickel, copper, chromium etc. as main component, is to form on the surface of thermal insulation layer.In Fig. 1, metal coating 40 is at the roughly all surfaces of the metal covering of die cavity 50 sides of the second die main body 201 but not only on the surface of thermal insulation layer 30, forms, but also can be as shown in Figure 3, only form and (it should be noted that on the surface of thermal insulation layer 30, in this manual, " roughly all surfaces " refers to part or all surface of face).Make to be formed with the first mould of this metal coating, when being formed with the second mould matched moulds of metal coating, the space forming in the inside of mould is die cavity.By forming metal coating, can stop up the concavo-convex of thermal insulation layer, make the surface (being transfer surface) of die cavity level and smooth.Particularly, at metal coating, take nickel as main component in the situation that, the toughness of metal coating and the balance of hardness become well, ductility is high.Its result, the easy surface transfer even surface to crystalline thermoplastic resin-formed body.
In Fig. 1, on whole faces of the face relative with the first mould 10 of metal coating 40 in the second mould 20, form, but also can as shown in Figure 3, in a part for the face relative with the first mould, arrange, as long as form with the entirety or a part of mode that cover thermal insulation layer.
In addition,, in Fig. 1, although do not form thermal insulation layer and metal coating in the first mould 10, also can similarly form thermal insulation layer and metal coating with the second mould 20.In the present invention, can on any one of the first mould or the second mould or both, form thermal insulation layer and metal coating.
About the thickness of metal coating, never hindering the viewpoint of the effect of heat insulation being brought by thermal insulation layer to set out is below 100 μ m.In addition, from the viewpoint of avoiding metal coating to peel off from thermal insulation layer, its thickness is more than 50 μ m.The thickness of preferred metal coating is more than 75 μ m and below 100 μ m.
The method that forms metal coating on thermal insulation layer is not particularly limited, can lists the method for implementing chemical plating processing, electroplating processes, vapor deposition treatment etc. on thermal insulation layer.Particularly preferably adopt chemical plating processing, electroplating processes, from making metal coating obtain surperficial more level and smooth viewpoint, particularly preferably adopt chemical plating processing.
In addition, preferably use method described later, before being to implement chemical plating processing, electroplating processes on thermal insulation layer, utilize in advance sputter process etc. on thermal insulation layer, to form metallic matrix layer (not shown).By metallic matrix layer, the bonding force of metal coating and thermal insulation layer rises, and metal coating becomes and is difficult for peeling off.The method that forms metallic matrix layer is not particularly limited, can adopts sputtering method, ion plating method etc.In the present invention, preferably adopt sputtering method.
Sputtering method refers to the method for carrying out evaporation by making high-energy particle clash into the so-called sputtering phenomenon that forms the mother metal of plated film and the constituting atom of mother metal is driven out of of utilizing.As sputtering method, for example, can list high-frequency sputtering method, magnetron sputtering method, ion beam sputtering (IBS method) etc.In addition, also can carry out using in sputter gas according to the difference of evaporation composition the reactive sputtering of reactant gas.
Chemical plating processing refers to use to be dissolved with as plating wants the chemical plating of the metal ion of separating out to bathe the processing that utilizes chemical reaction that metal is separated out.For example, on the thermal insulation layer that chemical plating catalyst is attached to form in mould, this mould is immersed in to chemical plating and carries out chemical plating processing in bathing.Bathe as used chemical plating, can use common plating to bathe.The composition of bathing as common chemical plating, mainly contains metal ion, the reducing agent that plating uses, the stability-enhanced additive (stabilizing agent) that makes metal ion.In this chemical plating is bathed, on the basis of above-mentioned substance, can also contain the known additive that can add in chemical plating is bathed.Reducing agent, stabilizing agent adopt suitable preferred material according to the metal ion that will use.
Condition to above-mentioned chemical plating processing is not particularly limited, and suitably adjusts.For example, by adjusting the concentration of metal ions of chemical plating bath, bathing the dip time of impregnation mold, the temperature that chemical plating is bathed to chemical plating, can adjust the thickness of metal coating.Therefore, can suitably adjust above-mentioned condition according to the thickness of expecting.
Electroplating processes refers to: in the electroplating bath that comprises the metal ions such as nickel ion, using thermal insulation layer as negative electrode, using metals such as nickel as anode, (anode) carries out electrolysis, makes metal ion on thermal insulation layer, reduce the processing method of separating out.The electric conductivity of the thermal insulation layer conventionally, being made up of porous ceramics is extremely low.Therefore, while using electroplating processes to form metal coating, particularly preferably be, on thermal insulation layer, form the laggard electroplating processing such as above-mentioned metallic substrate layer (not shown).
Condition to electroplating processes is not particularly limited, as long as set suitably preferred condition.For example, by adjusting contained concentration of metal ions, the dip time to electroplating bath impregnation mold, current density in electroplating bath, can adjust the thickness of metal coating.
The surface of the metal coating operating as mentioned above and form is level and smooth, and as the method that forms more level and smooth transfer surface, has the surperficial method of abrasive metal coating.By grinding, it is very level and smooth that the surface of metal coating can become, and becomes the easily surface transfer minute surface at crystalline thermoplastic resin-formed body.The method of grinding is not particularly limited, can adopts polishing grinding, belt-sanding, polishing to grind (lap abrasion), chemical grinding, electrolytic polishing etc.Particularly preferably polishing grinding, belt-sanding, polishing are ground.
The method that uses the mould of manufacture described above to manufacture crystalline thermoplastic resin-formed body is described.
Crystalline thermoplastic resin-formed body can use injection molding method moulding.Particularly, can use existing known mixing roll etc. that the raw material of molten condition is injected in the die cavity of mould, this raw material is solidified in mould, thereby manufacture crystalline thermoplastic resin-formed body.
In mould, there is thermal insulation layer, thereby can suppress raw material chilling, therefore can suppress crystalline thermoplastic resin and solidify with the inadequate state of crystallization.Its result, is used when mould, can improve the degree of crystallinity of crystalline thermoplastic resin contained in crystalline thermoplastic resin-formed body.
Particularly, by the thickness of thermal insulation layer be adjusted into 200 μ m above, the thickness of metal coating is adjusted to 100 μ m when following, the chilling of raw material is positively suppressed, and can fully improve the degree of crystallinity of crystalline thermoplastic resin.
Metal coating as the cavity surface of mould is level and smooth.Concavo-convex, crystalline thermoplastic resin-formed body that the raw material that therefore, can produce hardly molten condition enters cavity surface are difficult for the problem from mold releasability.
Especially the surface of the metal coating of surface through grinding is very level and smooth, therefore as long as manufacture the method for crystalline thermoplastic resin-formed body with the mould that possesses it, and just can be to the surface transfer minute surface of crystalline thermoplastic resin-formed body.Minute surface refers to the face that the mode can mirror mirror image as the surface of mirror forms.In addition, " surface of metal coating is very level and smooth " refers to and utilizes the surface roughness that laser microscope is measured to show that profile arithmetic average error Ra is below 0.4 μ m.
In addition,, if the plating liquid that is used to form metal coating is by arriving the metal covering of mould in the space of thermal insulation layer, this electroplate liquid can make mould get rusty.If the material that mould is difficult for getting rusty by stainless steel etc. forms, getting rusty of being caused by plating liquid can be suppressed, can use thus 1 more crystalline thermoplastic resin-formed body of mould manufacture.
In mould of the present invention, can on the surface of metal coating, form DLC carbon-coating.DLC carbon-coating forms at the roughly all surfaces on metal coating surface.
Being formed with in the mould of DLC carbon-coating, by being formed with the first mould and the second mould matched moulds of DLC carbon-coating, the space forming in the inside of mould becomes die cavity.Therefore, being formed with in the mould of DLC carbon-coating, the surface of DLC carbon-coating becomes cavity surface., being formed with in the mould of DLC carbon-coating, the surface of DLC carbon-coating becomes to the surface transfer even surface of crystalline thermoplastic resin-formed body, the transfer surface of minute surface.
The thickness of DLC carbon-coating can be 0.5～10 μ m.
DLC carbon-coating is made up of diamond-like-carbon.Formation method to DLC carbon-coating is not particularly limited, for example, can list microwave plasma CVD technique, ECRCVD method, IPC method, DC sputtering, ECR sputtering method, ion plating, arc ion plating, EB vapour deposition method, resistance heated vapour deposition method etc.It should be noted that, can adjust by adjusting formation condition the thickness of DLC carbon-coating.
When use is formed with the mould manufacture crystalline thermoplastic resin-formed body of DLC carbon-coating, the surface of DLC carbon-coating becomes the surface of die cavity.The surperficial coefficient of friction of DLC carbon-coating is less than the surperficial coefficient of friction of metal coating.Therefore, use while being formed with the mould of DLC carbon-coating, can be easily by crystalline thermoplastic resin-formed body from mold releasability.
In addition, the surperficial DLC carbon-coating of DLC carbon-coating is unbodied, therefore very level and smooth, becomes the easily surface transfer minute surface to crystalline thermoplastic resin-formed body.
Particularly formed by the surface of DLC carbon-coating by the roughly all surfaces that makes cavity surface, can be more easily by crystalline thermoplastic resin-formed body from mold releasability.And then, can be to roughly all surfaces transfer printing even surface, the minute surface of crystalline thermoplastic resin forming surface.
embodiment
Below list embodiment the present invention is described in further detail, but the present invention is not subject to the restriction of these embodiment.
mould
In following embodiment and comparative example, in embodiment 1～3, comparative example 2～5, use the mould with the layer structure shown in Fig. 1, in embodiment 4, use the mould with the layer structure shown in Fig. 2, in comparative example 1, use the mould from thering is the layer structure shown in Fig. 1 to remove the mould with thermal insulation layer obtaining metal coating.
the formation of thermal insulation layer
By metallikon by the raw material spraying plating mainly being formed by zirconia the metal covering to mould (flat plate mold of width 50mm × length 50mm × thickness 3mm), formation thermal insulation layer.In addition, form to such an extent that the thickness of thermal insulation layer is as shown in table 1.
the die steel using
HPM1: perhardened steel, Hitachi Metals Tool Steel, Ltd. manufactures
STAVAX: iron steel, Uddeholm Corporation manufacture (SUS420J2)
the formation of metallic matrix layer
Form at all surfaces on thermal insulation layer surface the metallic matrix layer being formed by Ni by sputtering method.
the formation of metal coating
Use makes the mould that is formed with metallic matrix layer be immersed in the method in chemical plating liquid, forms metal coating on the surface of metallic matrix layer.The metal that forms the metal coating forming is as shown in table 1.It should be noted that, in table 1, " Ni " refers to nickel.The condition of plating becomes the suitable adjustment of mode of the thickness shown in table 1 with the thickness of metal coating.
the surperficial grinding of metal coating
By the surface of polishing polishing abrasive metal coating.
the formation of DLC carbon-coating
Surface at the metal coating forming in the above described manner forms the DLC carbon-coating (embodiment 4) being made up of diamond-like-carbon.
For the surface of the thermal insulation layer of the surface of the DLC carbon-coating of the surface of the metal coating of embodiment 1～3 and comparative example 2～5, embodiment 4, comparative example 1, at the profile arithmetic average error Ra(μ measuring with laser microscope (VK-9510 that KEYENCE CORPORATION manufactures) shown in table 1 m).
the manufacture of crystalline thermoplastic resin-formed body
raw material
Polyphenyl thioether resin composition: " FORTRON(registration mark) 1140A64 " (Polyplastics Co., Ltd.'s manufacture)
condition of molding
Screw speed: 100rpm
Injection moulding speed: 100mm/ second
Mold temperature: 100 ℃
Resin temperature: 320 ℃
By above-mentioned raw material injection mo(u)lding, obtain the tabular crystalline thermoplastic resin-formed body of width 50mm × length 50mm × thickness 3mm with above-mentioned condition of molding.
relative crystallinity
The mensuration of the degree of crystallinity based on X-ray diffraction method is used wide-angle x-ray diffraction (bounce technique) to carry out.Particularly, obtain degree of crystallinity by Ruland method.By use do not possess metal coating and DLC carbon-coating, (degree of crystallinity of thickness 500 μ formed in mould products formed (comparative example 1) m) is made as 100, calculates relative crystallinity only to possess zirconia thermal insulation layer.In result shown in table 1.
the evaluation of release property
Continuously repeatedly by the injection mo(u)lding of 100 crystalline thermoplastic resin-formed bodies, measure the number of times that crystalline thermoplastic resin-formed body attaches on mould, can not the demoulding by above-mentioned condition, evaluate release property according to this number of times.Metewand is as shown in following.In this result shown in table 1.
metewand
◎: number of times that can not the demoulding is 0 time
Zero: number of times that can not the demoulding is 1～3 time
×: number of times that can not the demoulding exceedes 3 times
the evaluation of durability
Continuously repeatedly by the injection mo(u)lding of crystalline thermoplastic resin-formed body, after each moulding, observe the core of mould with order Visual by above-mentioned condition, evaluate the durability of the layer that forms cavity surface.Metewand is as shown in following.In this result shown in table 1.
metewand
Zero: during by 1000 body formed rear observations of crystalline thermoplastic resin forming, do not change
△: confirm part plating during by observation after body formed 300 crystalline thermoplastic resin formings and peel off
×: confirm crackle when observing after 50 crystalline thermoplastic resin-formed bodies on surface and produce
table 1
In an embodiment, confirm the mould that possesses thermal insulation layer, metal coating and the DLC carbon-coating of the thermal insulation layer of regulation and metal coating or regulation by use and obtained the resin-formed body of release property and specularity excellence.
Claims (5)
1. a mould, it is the mould having for the manufacture of the die cavity of crystalline thermoplastic resin-formed body,
Described mould possesses the second mould of the first mould and configuration relative to described the first mould,
And described mould possesses thermal insulation layer that form, that be made up of porous ceramics at least a portion of the metal covering of the cavity side of described the first mould and described the second mould, and
The metal coating forming on the surface of described thermal insulation layer, wherein,
The thickness of described thermal insulation layer is more than 200 μ m,
The thickness of described metal coating is more than 50 μ m and below 100 μ m,
The surperficial roughly all surfaces of described metal coating is the transfer surface to crystalline thermoplastic resin-formed body transfer printing even surface.
2. mould according to claim 1, it also possesses the DLC carbon-coating forming on the surface of described metal coating.
3. mould according to claim 1 and 2, wherein, described the first mould and described the second mould are made up of stainless steel.
4. according to the mould described in any one in claim 1～3, wherein, described metal coating is the layer take nickel as main component.
5. a manufacture method for crystalline thermoplastic resin-formed body, it comprises the mould described in any one in right to use requirement 1～4 carries out moulding operation to crystalline thermoplastic resin or crystalline thermoplastic resin combination.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-232513 | 2012-10-22 | ||
| JP2012232513A JP6026846B2 (en) | 2012-10-22 | 2012-10-22 | Method for producing mold and crystalline thermoplastic resin molded body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103770250A true CN103770250A (en) | 2014-05-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310492677.7A Pending CN103770250A (en) | 2012-10-22 | 2013-10-18 | Die and method for manufacturing crystalline and thermoplastic resin forming body |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6026846B2 (en) |
| CN (1) | CN103770250A (en) |
| TW (1) | TW201416211A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2960035A1 (en) * | 2014-06-26 | 2015-12-30 | TCTech Sweden AB | Method and device for injection moulding or embossing/pressing |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001300941A (en) * | 2000-04-21 | 2001-10-30 | Mitsubishi Engineering Plastics Corp | Insert, mold assembly, and method for molding |
| JP4301717B2 (en) * | 2000-09-20 | 2009-07-22 | 三菱エンジニアリングプラスチックス株式会社 | Nesting and mold assembly and molding method |
| JP4181017B2 (en) * | 2002-11-13 | 2008-11-12 | 株式会社東伸精工 | Mold for molding |
| CN103038037B (en) * | 2010-06-14 | 2015-07-22 | 宝理塑料株式会社 | Manufacturing method for die |
-
2012
- 2012-10-22 JP JP2012232513A patent/JP6026846B2/en not_active Expired - Fee Related
-
2013
- 2013-10-16 TW TW102137248A patent/TW201416211A/en unknown
- 2013-10-18 CN CN201310492677.7A patent/CN103770250A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| TW201416211A (en) | 2014-05-01 |
| JP2014083709A (en) | 2014-05-12 |
| JP6026846B2 (en) | 2016-11-16 |
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Application publication date: 20140507 |