CN101092050A - Method of fabricating hardened film produced by jet forming in use for decorating inside mould - Google Patents
Method of fabricating hardened film produced by jet forming in use for decorating inside mould Download PDFInfo
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- CN101092050A CN101092050A CN 200610086884 CN200610086884A CN101092050A CN 101092050 A CN101092050 A CN 101092050A CN 200610086884 CN200610086884 CN 200610086884 CN 200610086884 A CN200610086884 A CN 200610086884A CN 101092050 A CN101092050 A CN 101092050A
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Abstract
The invention relates to a mould decoration jetting molding technology that includes the following steps: coating a hardened layer dope on the hot pressing molding plastic thin film surface; using UV, EB or UV+EB to make the dope become semihardened surface hardened layer; applying inner mould decoration jetting molding process to the semihardened surface hardened layer to realize fully hardened after deep extension molding to the semihardened surface hardened layer.
Description
Technical field
The present invention relates to the technology of a kind of ejecting forming decoration in mould [In-mold decoration (IMD)], mean that especially a kind of superficies that are applied to ejecting forming decoration in mould (IMD) have the cured film manufacture method of hardened layer.
Background technology
Traditional plastic processing technology can't satisfy the requirement of light, thin, the short and small consumption electronic products of modernized product gradually, and meets environmental consciousness.Because the advantage of ejecting forming decoration in mould [In-mold decoration (IMD)] is suitable for the plastic product of 3C, household electrical appliances, LOGO inscription plate and auto parts, particularly present popular phone housing and various instrument face plate.Ejecting forming decoration in mould (IMD) can replace many traditional processing procedures, as decorative appearance methods such as hot transfer printing, spraying, printing, plating.Especially need multicolour image, backlight, Related product.Ejecting forming decoration in mould (IMD) is a kind of new relatively automatic production process, compare with other technology, ejecting forming decoration in mould (IMD) can simplify production stage and building block is disassembled in minimizing, therefore can produce fast and save time and cost, also have simultaneously and improve the quality, increase the complexity of image and improve the durability of product advantage, be applied on the product appearance, ejecting forming decoration in mould (IMD) is a kind of method of full blast, it is to impose printing on film surface, hot-forming, die-cut, last and plastic tie synthesis type, exempt secondary operation program and manpower man-hour thereof, especially generally backlight at need, many curved surfaces, printings such as rib interference are sprayed paint processing procedure when can't handle, and more are to use the opportunity of ejecting forming decoration in mould (IMD) processing procedure.With No. 00462914 " the in-mold film decoration ejection molding method that can the completely cut off electromagnetic interference " patent of bulletin that obtains the TaiWan, China patent is example [patent announcement data reference on November 11 calendar year 2001], and this invention comprises the following step: step 1: decorating film: in transparent adhesive tape sheet film one side printshop palpus pattern; Step 2: apply shielding layer: on the film that this printed decoration is finished, apply a metal shielding layer that can completely cut off electromagnetic interference again; Step 3: film preformed: will apply the film that shielding layer finishes and insert mould, according to the accessory design to be thermoformed into required outward appearance; Step 4: cut, prune and be positioned in the injection shaping die: the film that preformed is finished cuts, is trimmed to the size of ejection formation die cavity, it is inserted and is fixed in the ejection formation die cavity again; Step 5: ejection formation: with Jet forming machine heat is melted resin and penetrate, heat is melted be integral with film after resin solidifies, at last finished product is taken out in the ejection formation die cavity, promptly finish step of the present invention in molded film printing one side.TaiWan, China is announced No. 00532059 " have concurrently EMI covers and the shell moulding manufacture method of incrustation " patent [on 05 11st, 2003 bulletin data with reference to], it mainly is to see through step procedure such as A. moulding plastics film step, B. moulding EMI shielding layer step, C. coating following layer step and the outer step of D. moulding, and the EMI shielding layer can be shaped between plastic sheeting skin and the inner plastic, in view of the above, a plastic EMI covers that fruit is good, the EMI shielding layer can wearing and tearing, weatherability, resistance to chemical reagents, finished product aesthetic in appearance; Moreover, wherein, but this plastic sheeting straight forming has predetermined decorative cover, and EMI covers series of strata and must combine with the decorative cover of plastic sheeting (predetermined figure line of moulding or color on plastic sheeting) once-forming, can effectively reduce cost in view of the above and improve manufacturing efficient, to meet the actual demand of industrial circle.
As previously mentioned, on portable electronic product, the outermost layer on surface must need hardened layer destroys product to prevent surperficial scratch outward appearance or sense of worth, it is to re-use spraying method hardened layer is coated with up after the manufacturing of object profile is finished that a kind of mode is arranged traditionally, but the pollution that the method processing procedure is loaded down with trivial details, yield is low and can produce solvent air, this is a kind of tool environmental pollution and expensive processing procedure of spending.
Use hot moldable thin film can replace tradition at ejecting forming decoration in mould (IMD) processing procedure and paste that mould sprays paint, hot pressing is gold stamping and electroplate, this kind processing procedure more is widely used in today and comprises on car interior-exterior parts and the portable electric product as mobile phone, computer, game machine etc.Ejecting forming decoration in mould (IMD) processing procedure use hot moldable thin film through modes such as printing, coating, dyeing to reach the effect of beautiful decoration and colorize, cut, hot-forming, deburring, insert and penetrate ejection formation in the die cavity through mould again, bottom is compatible plastic basis material, the internal layer surface of this hot moldable thin film can be processed into color, metal covering, wood grain, etc. various pattern, because the pattern colorant is positioned over the internal layer of hot moldable thin film, has the effect that is not destroyed.Other has a kind of more advantageous method to be to use hot moldable thin film, earlier on the thin film exterior layer surface, be coated with hardened layer, yet this hardened layer must be when hot-forming work stretches, can not chap, but, in this way made hardened layer highest hardness will be subjected to draw ratio (as 1.2 or 1.3 times) restriction, at present in the cured film supply that does not have good function on the market as yet.Autotype International company is big draw ratio (deep forming), a kind of material is provided, it is to produce with coating and heated drying mode can apply on dull and stereotyped ejecting forming decoration in mould (IMD) processing procedure (B stage), and this coated thin film also can carry out deep forming; Go to produce the surface (C stage) of anti scuffing after the moulding with ultraviolet (UV); but the case hardness of this material is failed by the detection (HB/500g of pencil hardness F/500g; by the no scratch of test); and this kind technology; on the heated drying method; speed of production regular meeting is restricted, and also possible thermally sensitive base film of the heat when coating is dry simultaneously or sensitization initiator cause damage and be its disappearance.More than be the disappearance of existing technology maximum, in fact a difficult problem of demanding urgently overcoming for industry.
Summary of the invention
The purpose of this invention is to provide a kind of cured film when ejecting forming decoration in mould (IMD) processing procedure deep forming, crack performance in the time of can avoiding hardening the face stretching, impel ejecting forming decoration in mould (IMD) processing procedure to be used in a large number, and reach the cured film manufacture method that is applied to ejecting forming decoration in mould that improves the effect of producing yield, efficient, colorize and minimizing environmental pollution by industrial quarters.
A kind of cured film manufacture method that is applied to ejecting forming decoration in mould is characterized in that: this method comprises the steps: coating one deck hardened layer coating on the hot pressing moulding plastics film surface that ejecting forming decoration in mould is used; Add electron beam (UV+EB) with ultraviolet (UV), electron beam (EB) or ultraviolet again and use simultaneously, make this hardened layer coating become semi-harden cementation zone; The hot pressing moulding plastics film of the semi-harden cementation zone of this tool is applied to in-mold decorating injection molding manufacture procedure, this semi-harden cementation zone is hardened fully after finishing degree of depth drawing and forming again.
Beneficial effect of the present invention is: produce the semi-harden hardened layer in surface earlier (as coating one deck hardened layer coating on the hot pressing moulding plastics film surface that ejecting forming decoration in mould is used, penetrating with ultraviolet ray or electron beam illumination makes this hardened layer coating become semi-harden cementation zone again), the hot pressing moulding plastics film semi-harden when this kind surface is applied to in-mold decorating injection molding manufacture procedure, can not produce the crack performance of cementation zone when making degree of depth drawing and forming, after finishing degree of depth drawing and forming, use emittance (UV/EB/IR) that this hardened layer is given pansclerosis again, use this kind method can impel ejecting forming decoration in mould (IMD) processing procedure to be used in a large number, produce yield to reach to improve by industrial quarters, efficient, the effect of colorize and minimizing environmental pollution.
Ejecting forming decoration in mould (IMD) semi-harden (B stage) form film that relatively the present invention used via ultraviolet (UV) or electron beam (EB) or the irradiation of infrared ray (IR) heat energy semi-harden with the semi-harden advantage of heated drying method:
1. ultraviolet (UV) or the faster drying of electron beam (EB) specific heat drying mode on economic benefit.
2. the damage that the semi-harden thermally sensitive film of ultraviolet (UV) or electron beam (EB) irradiation can be less.
3. the irradiation of ultraviolet (UV) or electron beam (EB) is semi-harden than environmental protection.
4. the semi-harden selection to base material and sensitization initiator of ultraviolet (UV) or electron beam (EB) irradiation has more elasticity.
The specific embodiment
Method of the present invention is as follows: it mainly produces the semi-harden hardened layer in surface earlier [as coating one deck hardened layer coating on the hot pressing moulding plastics film surface that ejecting forming decoration in mould is used, make this hardened layer coating become the cementation zone of semi-harden (Bstage) with ultraviolet (UV) or electron beam (EB) again, this hardened layer paint thickness is between between 5-15um], making this cementation zone is the surperficial hardening film that can not chap when being used in deep forming, again that this is semi-harden cementation zone gives pansclerosis [as when waiting to finish deep forming after finishing degree of depth drawing and forming, re-use the fully irradiation of ultraviolet (UV) or electron beam (EB) or infrared ray (IR), to reach the situation of sclerosis fully, come the fully hard prior art that turns to] with emittance (UV/EB/IR).In the present invention, can adopt ultraviolet (UV) or electron beam (EB) to shine hardenable coating composition, this hardenable coating composition includes monomer, polymer, diluent, additive, then adds the sensitization initiator in case of necessity.This coating can be coated on the film substrate and (get final product hot-forming plastic sheeting), if desired, then gives suitable drying; Thereafter, present that liquid coating is penetrated suitable energy via UV or EB illumination and spectrum forms semi-harden state, in embodiment after a while, we use single plant or multiple sensitization initiator is reached the hardening effect that is proposed.
Moreover, the present invention to measure or differentiate hardened layer coating whether enter into can be used in ejecting forming decoration in mould (IMD) processing procedure semi-harden (B stage) state, can differentiate rapidly via following method:
1. solvent resistance test, (for example: ethyl acetate) 1cc drops on the hardened layer coating surface under the room temperature state with solvent under room temperature state, treat solvent volatilizees the back fully with dry Populus deltoides wiping, detects whether slight corrosion or the generation of atomizing situation are arranged on the hardened layer coating surface.If have corrosion or atomizing situation to produce then be semi-harden state.If corrosion or atomizing situation do not produce then are the pansclerosis state fully.
With semi-harden aspect upwards again with hand with film doubling 180 degree down, with the be full of cracks state of 100 times microscopic examination broken lines, line produces then is semi-harden state if chap in the broken line position.If having the be full of cracks line to produce, the broken line position is the pansclerosis state.
3. firmly scraped a line with hard thing (as: nail) at semi-harden laminar surface, if having groove mark to occur and have powder to be scraped then be expressed as semi-harden state.If do not have groove mark to occur and do not have powder to be scraped then be expressed as the pansclerosis state.
Again, after the semi-harden HTHP moulding of hardened layer film in the present invention surface via ejecting forming decoration in mould (IMD) processing procedure, can adopt the ultraviolet (UV) of different wave length or electron beam (EB) or infrared ray (IR) heat energy (this is located by prior art) to shine, make hardened layer enter into sclerosis (C stage) state fully by semi-harden (Bstage) state.
In the following embodiments, we use single kind or multiple sensitization initiator to reach the hardening effect that is proposed.With thickness 178 μ m PC (Polycarbonate film) film coated acryl is cured coating, uses ultraviolet (UV) lamp energy 800mj/cm2 irradiation, when coating thickness is that 5-15 μ m can reach the 1H/500g standard hardness when hardening fully.As use mercury ultraviolet (UV) lamp (200mj/cm2) to do partly sclerosis (B stage), under room temperature state, solvent (ethyl acetate) 1cc dropped on the hardened layer coating surface under the room temperature state, treat solvent volatilizees the back fully with dry Populus deltoides wiping, detects whether slight corrosion or the generation of atomizing situation are arranged on the hardened layer coating surface.This can guarantee that this hardenability is can be accepted to be used on special ejecting forming decoration in mould (IMD) purposes.When semi-harden (B stage) film is folded, with semi-harden aspect upwards again with hand with film doubling 180 degree down, with the be full of cracks state of 100 times microscopic examination broken lines, line produces then is semi-harden state if broken line chaps.In special IMD utilization, be can be received then.After this semi-harden (B stage) film thermoforming via ejecting forming decoration in mould (IMD) processing procedure, use other mercury formula ultraviolet (UV) lamp to shine fully, hardness rises to more than the F/500g, and the line that do not chap in the deep forming district produces.
The above, only being of the present invention one preferable possible embodiments, is not in order to arrest limit scope of the present invention, to be familiar with this skill personage such as, the substituting manufacture method of using specification of the present invention and claim to do ought to be included in the claim of the present invention.
Claims (4)
1. cured film manufacture method that is applied to ejecting forming decoration in mould is characterized in that: this method comprises the steps: coating one deck hardened layer coating on the hot pressing moulding plastics film surface that ejecting forming decoration in mould is used; Add electron beam with ultraviolet, electron beam or ultraviolet again and use simultaneously, make this hardened layer coating become semi-harden cementation zone; The hot pressing moulding plastics film of the semi-harden cementation zone of this tool is applied to in-mold decorating injection molding manufacture procedure, this semi-harden cementation zone is hardened fully after finishing degree of depth drawing and forming again.
2. be applied to the cured film manufacture method of ejecting forming decoration in mould according to claim 1, it is characterized in that: described hardened layer paint thickness is between between 5-15um.
3. be applied to the cured film manufacture method of ejecting forming decoration in mould according to claim 1, it is characterized in that: the incomplete reaction of described semi-harden cementation zone is to adopt ultraviolet or the beam energy lower than pansclerosis reaction energy to finish.
4. be applied to the cured film manufacture method of ejecting forming decoration in mould according to claim 1, it is characterized in that: described semi-harden cementation zone not exclusively partly reaction is to use ultraviolet or the electron beam spectral illumination that is different from sclerosis fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610086884 CN101092050A (en) | 2006-06-22 | 2006-06-22 | Method of fabricating hardened film produced by jet forming in use for decorating inside mould |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610086884 CN101092050A (en) | 2006-06-22 | 2006-06-22 | Method of fabricating hardened film produced by jet forming in use for decorating inside mould |
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| CN101092050A true CN101092050A (en) | 2007-12-26 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102198720A (en) * | 2010-03-24 | 2011-09-28 | 汉达精密电子(昆山)有限公司 | Method for producing plastic exterior trimming part |
| CN103129290A (en) * | 2011-11-24 | 2013-06-05 | 仁宝电脑工业股份有限公司 | Production method of workpiece and workpiece with three-dimensional pattern |
| CN101722619B (en) * | 2008-10-10 | 2014-01-15 | 汉达精密电子(昆山)有限公司 | Surface-hardening treatment method of plate glazed plastic product |
| CN103895148A (en) * | 2014-04-09 | 2014-07-02 | 格林精密部件（惠州）有限公司 | In-mold injection molding and coating process |
| CN109572024A (en) * | 2018-11-21 | 2019-04-05 | Oppo（重庆）智能科技有限公司 | The manufacturing method of the shell of electronic device, the shell of electronic device and electronic device |
| CN111278659A (en) * | 2017-08-18 | 2020-06-12 | 雷恩哈德库兹基金两合公司 | Transfer foil, method for producing a foil-coated article, and foil-coated article |
| CN114347584A (en) * | 2022-01-19 | 2022-04-15 | 广东达益新材料有限公司 | Decorative plate with electron beam hardening surface treatment layer and manufacturing method thereof |
-
2006
- 2006-06-22 CN CN 200610086884 patent/CN101092050A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101722619B (en) * | 2008-10-10 | 2014-01-15 | 汉达精密电子(昆山)有限公司 | Surface-hardening treatment method of plate glazed plastic product |
| CN102198720A (en) * | 2010-03-24 | 2011-09-28 | 汉达精密电子(昆山)有限公司 | Method for producing plastic exterior trimming part |
| CN103129290A (en) * | 2011-11-24 | 2013-06-05 | 仁宝电脑工业股份有限公司 | Production method of workpiece and workpiece with three-dimensional pattern |
| CN103895148A (en) * | 2014-04-09 | 2014-07-02 | 格林精密部件（惠州）有限公司 | In-mold injection molding and coating process |
| CN111278659A (en) * | 2017-08-18 | 2020-06-12 | 雷恩哈德库兹基金两合公司 | Transfer foil, method for producing a foil-coated article, and foil-coated article |
| US11679619B2 (en) | 2017-08-18 | 2023-06-20 | Leonhard Kurz Stiftung & Co. Kg | Transfer film, method for producing a film-coated article and film-coated article |
| CN109572024A (en) * | 2018-11-21 | 2019-04-05 | Oppo（重庆）智能科技有限公司 | The manufacturing method of the shell of electronic device, the shell of electronic device and electronic device |
| CN114347584A (en) * | 2022-01-19 | 2022-04-15 | 广东达益新材料有限公司 | Decorative plate with electron beam hardening surface treatment layer and manufacturing method thereof |
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