CN102729550A - Decorative film, manufacturing method for the same and injection molding product - Google Patents

Decorative film, manufacturing method for the same and injection molding product Download PDF

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Publication number
CN102729550A
CN102729550A CN2012100889416A CN201210088941A CN102729550A CN 102729550 A CN102729550 A CN 102729550A CN 2012100889416 A CN2012100889416 A CN 2012100889416A CN 201210088941 A CN201210088941 A CN 201210088941A CN 102729550 A CN102729550 A CN 102729550A
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China
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mentioned
decorating film
china ink
protective layer
solidified
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Chinese (zh)
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执行雅夫
大川将胜
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Mimaki Engineering Co Ltd
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Mimaki Engineering Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041Digital printing on surfaces other than ordinary paper
    • B41M5/0047Digital printing on surfaces other than ordinary paper by ink-jet printing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041Digital printing on surfaces other than ordinary paper
    • B41M5/0064Digital printing on surfaces other than ordinary paper on plastics, horn, rubber, or other organic polymers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0081After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention provides a decorative film, a manufacturing method for the same and an injection molding product. Due to the reason for generating the cracks, the present invention provides a decorative film which does not generate cracks in the hard coating and an injection molding product which is fixedly provided with the decorative film. In the decorative film (10) which utilizes an inkjet to print the UV ink with ultraviolet curing property to a base material (11), a protection layer (12) in half-curing state with ultraviolet curing property, and a UV ink layer (16) utilizing the inkjet for printing are formed on the base material (11); and the ultraviolet wavelength for curing the UV ink and the ultraviolet wavelength for curing the protection layer (12) are different wavelenghs.

Description

The manufacturing approach of decorating film, decorating film and injection mo(u)lding article
Technical field
The present invention relates to be printed in base material decorating film, decorating film manufacturing approach and used the injection mo(u)lding article of this decorating film.
Background technology
In the injection mo(u)lding article, for example use thermoplastic injection resin materials such as ABS resin as base material.But, being under the state that is exposed to the surface at this thermoplastic resin material, the injection mo(u)lding article are because case hardness is lower, so be scratched easily.
Therefore, the injection mo(u)lding article (for example with reference to patent documentation 1) that the film that will be formed with hard conating is fixed in the surface have been developed.
In patent documentation 1, disclose following injection mo(u)lding article: use formability PET (PETG) etc. are as the substrate layer of hardcoat film; Solidfied material by ultraviolet-curing resin composition forms hardcoat film on the single or double of substrate layer, this ultraviolet-curing resin composition contains acrylic polymer, multifunctional oligomer, monomer component and Photoepolymerizationinitiater initiater.In addition, this hard conating has the UV curable, but in order to make it have mouldability, when moulding at first, its UV is solidified, and after final moulding, it is carried out the UV irradiation and makes its curing.
Patent documentation 1: TOHKEMY 2008-260202 communique
As the technology that film is fixed in the surface of injection mo(u)lding article; Developed the method that is called in-mold transfer printing injection moulding (IMD:In Mold Decoration); Under the state of this method in the die cavity that film is configured in the employed mould of injection mo(u)lding, will inject resin material and be injected in the die cavity, thus; Make film and inject resin material and in mould, fit tightly, film is fixed in the main wall portion of injection mo(u)lding article and becomes one with the main wall portion of injection mo(u)lding article.
In addition, for the technology that is known as IMD, sometimes also as in mould, will being printed in the literal of film, the technology that pattern heat is needed on the moulding article, but in the present invention, as in mould, being that the technology of one describes with moulding article and film forming.
Yet when the film that utilizes above-mentioned IMD will have hard conating in desire was fixed in the injection mo(u)lding article, the existence meeting cracked such problem in hard conating.Therefore, when the inventor carries out various hypothesis and attempts checking in order to find out crack reason in hard conating, successfully found out crack reason in hard conating.
The reason of the crackle that the inventor found out below is described.
At first, usually, decorating film is used as the film that is fixed in the injection mo(u)lding article.
Decorating film is meant implements the film that prints.
The printing of decorating film is through using ink-jet printer and the UV China ink inking with the photoresist that under ultraviolet ray, solidifies being carried out on film.
In recent years, the continuous high speed of the print speed printing speed of ink-jet printer.Along with the high speed of print speed printing speed, solidify reliably in order to make the UV China ink of inking on film, in ink-jet printer, when making balladeur train scanning, strengthen ultraviolet irradiation intensity from the ultraviolet irradiation part that is equipped on balladeur train.
So; The ultraviolet irradiation intensity that is used to the UV China ink is solidified in ink-jet printer becomes big; Thus; When decorating, be used to make ultraviolet ray that the UV China ink solidifies can pass film and, and make the ultraviolet ray of stage irradiation in the end, thereby promote the curing of hard conating and hard conating is become fragile in this stage irradiation to the hard conating irradiation of film.So, under the state that hard conating becomes fragile, when desire utilizes IMD that film is fixed in the injection mo(u)lding article, along with film is stretched and in hard conating, has produced crackle.
Summary of the invention
Therefore, the inventor is in view of the generation reason of above-mentioned crackle, and the present invention has been accomplished in wholwe-hearted research in order to address this problem.
That is, the present invention accomplishes the injection mo(u)lding article that its purpose is that a kind of decorating film that in hard conating, does not crack is provided and is fixed with this decorating film in view of the generation reason of crackle and in order to address this problem.
The 1st technical scheme does; Adopting decorating film of the present invention is to utilize ink-jet printer will have the decorating film that ultra-violet solidified UV ink print forms in base material; It is characterized in that; On above-mentioned base material, be formed with the UV China ink layer of protective layer with ultra-violet solidified semi-cured state and the solid state that utilizes above-mentioned ink-jet printer printing, being used to make above-mentioned UV China ink ultraviolet wavelength of solidifying and the ultraviolet wavelength that is used to above-mentioned protective layer is solidified is different wavelengths.
Through adopting said structure; When utilizing ink-jet printer to print; Even for the UV China ink after the inking is solidified and irradiation ultraviolet radiation, also because this ultraviolet wavelength is to suppress the curing of protective layer with the ultraviolet wavelength different wavelengths that is used for curing protective coat.Therefore, when decorating film is fixed in the injection mo(u)lding article,, can prevent that also protective layer from becoming fragile and crack even in the IMD process under the situation of oriented film.
The 2nd technical scheme does; The manufacturing approach that adopts decorating film of the present invention is to be formed with on the base material with ultra-violet solidified protective layer that is semi-cured state, to utilize ink-jet printer and use to have the manufacturing approach that ultra-violet solidified UV China ink forms the decorating film of UV China ink layer; It is characterized in that; Different through being used in the ultraviolet wavelength of solidifying above-mentioned protective layer with the ultraviolet wavelength that is used to solidify above-mentioned UV China ink layer, the curing of the protective layer of inhibition semi-cured state when above-mentioned UV China ink layer is solidified.
Through adopting said method; When utilizing ink-jet printer to print; Even for the UV China ink after the inking is solidified and irradiation ultraviolet radiation, also because this ultraviolet wavelength is to suppress the curing of protective layer with the ultraviolet wavelength different wavelengths that is used for curing protective coat.Therefore, when decorating film is fixed in the injection mo(u)lding article,, can prevent that also protective layer from becoming fragile and crack even in the IMD process under the situation of oriented film.
In addition, in the manufacturing approach of decorating film of the present invention, preferably use the 1st light source and the 2nd light source, the 1st light source irradiation is used to make the ultraviolet ray of above-mentioned protective layer curing, and the 2nd light source irradiation is used to make the ultraviolet ray of above-mentioned UV China ink layer curing.
Thus, through when UV China ink layer is solidified with when protective layer is solidified, use different light sources, can when UV curing China ink layer, suppress protective layer and solidify.
And; In the manufacturing approach of decorating film of the present invention; The ultraviolet wavelength region may that preferred above-mentioned the 2nd light source is shone has and comprises the wave-length coverage that is used to make the wavelength that above-mentioned protective layer solidifies and is used to make the wavelength that above-mentioned UV China ink layer solidifies; Between above-mentioned the 2nd light source and above-mentioned decorating film, dispose filter, when utilizing above-mentioned the 2nd light source that above-mentioned UV China ink layer is solidified, this filter stops makes seeing through of wavelength that above-mentioned protective layer solidifies.
Thus, when UV China ink layer is solidified, utilize the filter elimination to be used to the ultraviolet wavelength that protective layer is solidified, therefore, can when UV curing China ink layer, suppress protective layer and solidify.
Adopt injection mo(u)lding article of the present invention; It is characterized in that; These injection mo(u)lding article are to form with following mode: under the state in the die cavity that the 1st technical scheme or the described decorating film of the 2nd technical scheme is configured in the employed mould of injection mo(u)lding; To inject resin material and be injected in the die cavity, and thus, in mould, decorating film will be fixed in wall portion and become one with wall portion; With decorating film with inject resin material be fixing integratedly after, irradiation is used to make the ultraviolet ray of the wavelength that above-mentioned protective layer solidifies and above-mentioned protective layer is solidified.
Through adopting said structure,, also can prevent in the protective layer of decorating film, to crack even as IMD, film is applied the method for bigger load and decorating film is fixed under the situation of injection mo(u)lding article using.
Under the state in the die cavity that decorating film is configured in the employed mould of injection mo(u)lding; To inject resin material and be injected in the die cavity, and thus, decorating film and injection resin material fitted tightly in mould; And decorating film is fixed in the main wall portion of injection mo(u)lding article and becomes one with the main wall portion of injection mo(u)lding article; Even in such cases, adopt the manufacturing approach and the injection mo(u)lding article of decorating film of the present invention, decorating film, also can make in the protective layer of decorating film, not crack.
Description of drawings
Fig. 1 is the cutaway view of expression decorating film of the present invention.
Fig. 2 is the component list of UV China ink.
Fig. 3 is the flow chart that the operation of decorating film and injection mo(u)lding article is made in explanation.
Fig. 4 is the key diagram of situation of the effect of expression UV China ink layer.
Fig. 5 is the cutaway view of expression injection mo(u)lding article of the present invention.
Fig. 6 is the key diagram that the device that is used for moulding injection mo(u)lding article is described.
(a) of Fig. 7 is the key diagram that is illustrated in when being configured in decorating film in the mould in the device of Fig. 6.(b) of Fig. 7 is the key diagram when the device matched moulds of Fig. 6 and desire being injected resin material after the expression configuration film.(c) of Fig. 7 is that expression inject behind the resin material the device die sinking of Fig. 6 and the key diagram when taking out in type injection mo(u)lding article.
Fig. 8 is the cutaway view of the embodiment of expression IML.
The specific embodiment
Decorating film
Preferred embodiment of the present invention based on description of drawings.
The cutaway view of the decorating film of this embodiment of expression in Fig. 1.
Decorating film 10 is the films with the base material 11 that is made up of plastics.One side side at base material 11 is formed with hard conating (protective layers described in claims) 12, is formed with UV China ink layer 16 in the another side side of base material 11.
As the raw material of base material 11, can adopt resins such as PP (polypropylene), PET (PETG), PC (Merlon), acrylic resin.In addition, as acrylic resin, PMMA (polymethyl methacrylate) etc. is arranged.
Hard conating 12 is avoided damaging for the surface of protecting the injection mo(u)lding article and is formed, and the surface of these injection mo(u)lding article is as supplying the fixing object of above-mentioned base material 11, this decorating film 10.Hard conating 12 can use has under ultraviolet ray solidify ultra-violet solidified coating material solidified.In addition, hard conating 12 is required to be water white hard conating, so that can arrive the decorative layer of the UV China ink layer 16 of decorating film 10 to the eye.In addition, in this embodiment, use that to solidify pencil hardness after finishing as hard conating 12 so coating material solidified about as 2H~3H.
The coating material solidified oligomer that comprises optical polymerism that constitutes hard conating 12, monomer and as assistants such as the Photoepolymerizationinitiater initiater of catalyst, other fillers, through irradiation ultraviolet radiation, Photoepolymerizationinitiater initiater produces free radical, and this free radical makes oligomer begin polymerization.Because above-mentioned such polymerisation, coating material solidifiedly change into solid-state and be bonded to object.In addition, there are various kinds, use benzophenone, benzoin class, acetophenones, thioxanthene ketone etc. usually as Photoepolymerizationinitiater initiater.
UV China ink layer 16 is the layers that utilize the UV China ink of ink-jet printer (not shown) after the printhead inking to be solidified to form through making.
The UV China ink is the China ink that causes the type of polymerisation and curing through irradiation ultraviolet radiation.Explanation in further detail; As the composition of UV China ink, comprise the oligomer, monomer of optical polymerism and as assistants such as the Photoepolymerizationinitiater initiater of catalyst and pigment, other antifoaming agents, through irradiation ultraviolet radiation; Photoepolymerizationinitiater initiater produces free radical, and this free radical makes oligomer begin polymerization.Because above-mentioned such polymerisation, the UV China ink become resin-like and with the state photographic fixing after the printing in object.In addition, there are various kinds, use benzophenone, benzoin class, acetophenones, thioxanthene ketone etc. usually as Photoepolymerizationinitiater initiater.
In addition, constitute the ultraviolet wavelength difference of UV China ink when each self-curing of the coating material solidified of hard conating 12 and formation UV China ink layer 16.Ultraviolet wavelength when solidifying in order to make is different, can use and the corresponding Photoepolymerizationinitiater initiater of wavelength separately.
And the further preferred China ink with tensile property that uses is as the UV China ink.
Have the UV China ink of tensile property through use, even under the situation that UV China ink layer 16 has thoroughly solidified, UV China ink layer 16 itself also can stretch.Therefore, decorating film 10 is being fixed under the situation of injection mo(u)lding article, can preventing the generation of the crackle of UV China ink layer 16.
In Fig. 2, represent the UV China ink with tensile property of cyan, magenta, yellow, these four kinds of colors of black and have the example of composition of the UV China ink of non-stretching character.At this, represent to have UV China ink and these two kinds of commodity of LH-100 for the China ink with tensile property of each color, represent to have F 200 and these two kinds of commodity of LF-200 for the China ink with non-stretching character of each color.Above-mentioned these China inks are trade names of applicant.In addition, the shared percentage of this composition of numeral.
Can know that by Fig. 2 the main component of the UV China ink with non-stretching character of each color is an acrylate.
On the other hand, it is bigger with the composition difference of the UV China ink with non-stretching character to have a composition of UV China ink of tensile property.Below, only maximum level is surpassed 10% composition and carry out record.
At first, about the black F200 of the UV of tensile property, cyan and yellow 10%~20% iso-bornyl acrylate, oxolane acrylic acid ester, Isooctyl acrylate monomer, the fatty family urethane acrylate composition of containing respectively.Magenta contains the composition of 10%~25% iso-bornyl acrylate, 10%~30% oxolane acrylic acid ester, 10%~25% Isooctyl acrylate monomer, 10%~20% fatty family urethane acrylate.Black contains 10%~25% iso-bornyl acrylate, 10~30% oxolane acrylic acid ester, 5%~25% amine modified acroleic acid ester oligomer, 10%~25% Isooctyl acrylate monomer composition.
About the black LF-200 of the UV of tensile property, cyan and yellow contain 50%~60% iso-bornyl acrylate, 5%~20% oxolane acrylic acid ester, 10%~20% amine modified acroleic acid ester oligomer, 5%~15% diphenyl-2.4.6-trimethylbenzene formyl phosphine oxide, 5%~15% acrylic acid 2-[2-(ethyl oxygen base) ethyl oxygen] ethyl ester composition.Magenta contains 40%~50% iso-bornyl acrylate, 10%~20% oxolane acrylic acid ester, 1%~15% amine modified acroleic acid ester oligomer, 5%~15% diphenyl-2.4.6-trimethylbenzene formyl phosphine oxide, 5%~15% acrylic acid 2-[2-(ethyl oxygen base) ethyl oxygen] ethyl ester, 1%~15% replacement triazine composition.Black contains 40%~50% iso-bornyl acrylate, 5%~15% oxolane acrylic acid ester, 10%~20% amine modified acroleic acid ester oligomer, 10%~20% acrylic acid 2-[2-(ethyl oxygen base) ethyl oxygen] ethyl ester composition.
In the UV China ink with tensile property of the composition that contains above-mentioned that kind, even after UV solidifies, also can be stretched to about about 2 times.Therefore, has the container-like moulding article main body 21 of stating that kind after the decorating film 10 that has used the black UV China ink layer 16 of above-mentioned UV can not be fixed in with cracking.
In addition, even have the decorating film 10 of the UV China ink layer 16 that has used UV China ink, under the situation that is fixed in flat moulding article main body (not shown), because therefore the decorating film 10 that do not stretch, also can be fixed on no problem ground with non-stretching character.
The manufacturing approach of decorating film
First half and Fig. 4 based on Fig. 3 describe the manufacturing approach of making decorating film shown in Figure 1.
At first, base material 11 forms hard conating 12 (step S 1) in the one side side of the base material 11 of decorating film 10.Hard conating 12 is formed by thin film fabrication factory.Hard conating 12 dispatches from the factory from thin film fabrication factory with the state of semi-solid preparation.
Then, the printing that the another side side of base material 11 of utilizing ink-jet printer to be the state of semi-solid preparation at hard conating 12 is stipulated.Implement the printing (step S2) that utilizes ink-jet printer to carry out in base material 11 through making from the beginning the 23 UV China ink inkings of spraying.
After the inking of UV China ink, utilize the 2nd light source (parts that the are used for irradiation ultraviolet radiation) irradiation ultraviolet radiation of the balladeur train that is equipped on ink-jet printer and make the UV China ink solidify (step S3).
As employed the 2nd light source in this step S3, for example can adopt metal halide lamp (metal halide lamp) 24.Metal halide lamp 24 is meant encloses the lamp that forms together with metal halide and mercury, as the metal halide lamp 24 that ultraviolet curing is used, and for example can output ultraviolet ray continuously in the wave-length coverage of 250nm~450nm.
In addition, in this embodiment, the ultraviolet wavelength that will be used for UV curing China ink is made as the wavelength between 250nm~450nm, and the ultraviolet wavelength that will be used to solidify hard conating 12 is made as 280nm.And, configuration filter 25 between metal halide lamp 24 and decorating film 10, this filter 25 has the function that elimination is used to solidify the wavelength components of hard conating 12.
Filter 25 stops the ultraviolet wavelength that is used to solidify hard conating 12, therefore, even hard conating 12 can not solidified by the ultraviolet ray of the 2nd light source irradiation yet, and can be still exists with the state of semi-solid preparation.As above-mentioned filter 25, contain the composition of the wavelength of the 280nm that is useful on absorption, have near the function of the wavelength the elimination 280nm in the wavelength of 250nm~450nm.
The injection mo(u)lding article
Then, based on Fig. 5 explain above-mentioned decorating film is fixed in wall portion the injection mo(u)lding article preferred embodiment.
The injection mo(u)lding article 20 of this embodiment are that the wall portion that the decorating film with hard conating 12 10 is fixed in container-like moulding article main body 21 is formed, and this container-like moulding article main body 21 forms by injecting resin material.In addition, between the UV of decorating film 10 China ink layer 16 and moulding article main body 21, be formed with adhesive phase 18.Adhesive phase 18 conducts are used to improve the UV China ink layer 16 of decorating film 10 and the cement of the engaging force between the moulding article main body 21 is provided with.
Raw material (injection resin material) as the moulding article main body 21 of injection mo(u)lding article 20 can adopt resins such as PP (polypropylene), PET (PETG), PC (Merlon), acrylic resin.As acrylic resin, PMMA (polymethyl methacrylate) etc. is arranged.
In addition, as the decorating film 10 of the wall portion of being fixed in moulding article main body 21, make its with the 1st embodiment in the decorating film 10 explained identical.At this, mark identical symbol, and omit explanation the structure of decorating film 10.
Injection mo(u)lding article 20 utilize in-molded (IMD:In Mold Decoration) and moulding.Of the back, IMD is identical with so-called inserts moulding, is following forming method: decorating film 10 is configured in the die injection moulding, extrudes the injection resin material, film and injection resin material are fitted tightly simultaneously and be shaped to the regulation shape.
Next, based on the latter half of Fig. 3 and Fig. 6 the manufacturing process of injection mo(u)lding article is described.
At first, at ink-jet printer when the printing of film finishes, in order to make the good bonding that injects between resin material and the UV China ink layer 16, at the surface applied adhesive (bond) of UV China ink layer 16 and formation adhesive phase 18 (step S4).
Then, will be configured at the decorating film 10 that UV China ink layer 16 side are formed with adhesive phase 18 in the die cavity of mould of use in injection molding (step S5).
Then, will inject resin material and be injected in the mould, the wall portion that is formed on moulding article main body 21 is fixed with the injection mo(u)lding article 20 (step S6) of decorating film 10.
Utilize 27 pairs of in type injection mo(u)lding article irradiations of the 1st light source to be used to the ultraviolet ray (step S7) that hard conating 12 is solidified.The 1st light source 27 uses LED, and it can be shone with 280nm is the ultraviolet ray at center.Therefore, can reduce owing to once more to the influence of fading of causing of the UV that solidified China ink layer 16 irradiation ultraviolet radiation etc.
Next, based on Fig. 6~Fig. 7 the manufacturing process of the IMD of the injection mo(u)lding article of this embodiment is described.
As shown in Figure 6, the mould 30 of use use in injection molding in IMD.Mould 30 is made up of the branch die sinking that can contact with each other, separate mobile 32,34.In mould 30, under the state that a branch die sinking 32 and another minute die sinking 34 are assembled, be formed with die cavity 36 with the corresponding shape of shape of moulding article.In another minute die sinking 34, be formed with and be used for being injected into the cast gate 38 in the die cavity 36 injecting resin material.In addition, on the cast gate 38 of this minute die sinking 34, be connected with have injection screw, the injection moulding apparatus of cartridge heater (not shown).
In (a) of Fig. 7, expression is configured in branch die sinking 32 side of die cavity 36 state when inner with decorating film 10.The UV China ink layer 16 of decorating film 10 is to dispose towards the mode of injecting resin material side (another minute die sinking 34 sides).
After decorating film 10 being configured in a branch die sinking 32 side inside of die cavity 36, with a branch die sinking 32 and another minute die sinking 34 matched moulds.
In (b) of Fig. 7, the state when representing with a branch die sinking 32 and another minute die sinking 34 matched moulds.
After matched moulds, inject injecting the cast gate 38 of resin material, and make injection resin material and decorating film 10 in die cavity 36, be shaped to one from another minute die sinking 34.
In (c) of Fig. 7, be illustrated in after the moulding a branch die sinking 32 with another minute die sinking 34 die sinkings and the state when taking out injection mo(u)lding article 20.After this, in order to make hard conating 12 final curings of the injection mo(u)lding article 20 that take out, carry out the ultraviolet ray irradiation from hard conating 12 sides.As the hardness of the hard conating 12 of above-mentioned such this embodiment, be about 2H~3H according to pencil hardness.
As stated, the decorating film 10 that utilizes IMD to make to have hard conating 12 fits tightly in the outside of moulding article main body 21 and fixes.In addition, when decorating film 10 is fixed in moulding article main body 21, do not need adhesive etc., therefore, can container-like injection mo(u)lding article 20 be provided with low cost.
The embodiment of IML
Above-mentioned embodiment is to utilize so-called IMD decorating film to be fixed in the mode of injection mo(u)lding article., though adopt IML (pad pasting injection moulding in the mould: under situation In Mold Lamination), also embodiment of the present invention aptly, this IML is used as decorating film through peeling off as the film of base material.
The cutaway view of the embodiment of expression IML in Fig. 8.
Another side side at the base material 11 that is formed by plastics of the decorating film 40 of IML is formed with releasing agent layer 42, hard conating 44, and is formed with UV China ink layer 46 in the another side side of hard conating 44.
Another side side at UV China ink layer 46 is formed with the adhesive phase 48 that is formed by bond, and can utilize adhesive phase 48 that decorating film 40 is sticked on arbitrarily on the member.In addition, on adhesive phase 18 being sticked on arbitrarily member after, peel base material 11 off from releasing agent layer 42.So the surface that can be provided at UV China ink layer 46 is applied with hard conating 44 and product that printing surface can not be scratched.
In addition, same as the raw material of base material 11 with above-mentioned embodiment, can adopt resins such as PP (polypropylene), PET (PETG), PC (Merlon), acrylic resin.In addition, as acrylic resin, PMMA (polymethyl methacrylate) etc. is arranged.
The releasing agent layer that is used for base material 11 is peeled off from hard conating 42 42 is made up of materials such as organosilicons.
This releasing agent layer 42 and hard conating 44 are in the thin film fabrication factory that makes base material 11, to form in advance, can use the releasing agent layer and the hard conating that dispatch from the factory from thin film fabrication factory.
Hard conating 44 uses has the ultra-violet solidified coating material solidified of under ultraviolet ray curing.In addition, hard conating 44 is required to be water white hard conating, so that can arrive the decorative layer that kind of the UV China ink layer 46 of decorating film 40 to the eye.In addition, in this embodiment, use as the pencil hardness of hard conating 44 after solidify finishing so coating material solidified about as 2H~3H.
The coating material solidified oligomer that comprises optical polymerism that constitutes hard conating 44, monomer and as assistants such as the Photoepolymerizationinitiater initiater of catalyst and other fillers; Pass through irradiation ultraviolet radiation; Photoepolymerizationinitiater initiater produces free radical, and this free radical makes oligomer begin polymerization.Because such polymerisation, coating material solidifiedly change solid into and be bonded to object.In addition, there are various kinds, use benzophenone, benzoin class, acetophenones, thioxanthene ketone etc. usually as Photoepolymerizationinitiater initiater.
UV China ink layer 46 is the layers that utilize the UV China ink of ink-jet printer (not shown) after the printhead inking to be solidified to form through making.
The UV China ink is the China ink that causes the type of polymerisation and curing through irradiation ultraviolet radiation.Explanation in further detail; As the composition of UV China ink, comprise the oligomer, monomer of optical polymerism and as assistants such as the Photoepolymerizationinitiater initiater of catalyst and pigment, other antifoaming agents, through irradiation ultraviolet radiation; Photoepolymerizationinitiater initiater produces free radical, and this free radical makes oligomer begin polymerization.Because such polymerisation, the UV China ink become resin-like and with the printing state photographic fixing in object.In addition, there are various kinds, generally use benzophenone, benzoin class, acetophenones, thioxanthene ketone etc. as Photoepolymerizationinitiater initiater.
In addition, constitute the ultraviolet wavelength difference of UV China ink when each self-curing of the coating material solidified of hard conating 44 and formation UV China ink layer 46.Ultraviolet wavelength when solidifying in order to make is different, can make the kind of Photoepolymerizationinitiater initiater separately different.
In this embodiment, also same with above-mentioned embodiment, the ultraviolet wavelength that for example will be used for UV curing China ink layer 46 is made as the wavelength between 250nm~450nm, and the ultraviolet wavelength that will be used to solidify hard conating 44 is made as 280nm.
In this embodiment, also use the 1st light source and the 2nd light source, the 1st light source is used to solidify hard conating 44, the 2 light sources and is used for UV curing China ink layer.
As the 1st light source; For example can use the ultraviolet LED27 (with reference to Fig. 5) of the wavelength that can shine 280nm; As the 2nd light source, for example can use and in the wave-length coverage of 250nm~450nm, to export ultraviolet metal halide lamp 24 (with reference to Fig. 4) continuously.
In addition, on the 2nd light source, be provided with filter 25 (with reference to Fig. 4), so that near the wavelength the specific 280nm in the wavelength of prevention 250nm~450nm.So, when utilizing the 2nd light source that UV China ink layer 46 is solidified, can suppress the UV-induced curing by the 2nd light source irradiation of the hard conating 44 of base material 11.
At first, utilize ink-jet printer to form UV China ink layer 46 in the another side side (surface of hard conating 44) of base material 11.Then, UV China ink layer 46 is solidified.At this moment, because hard conating 44 can not promoted by the ultraviolet ray from the 2nd light source to solidify, therefore, hard conating 44 still is semi-cured state.
Then, form adhesive phase 48, afterwards, utilize adhesive phase 48 that decorating film 40 is sticked on arbitrarily on the member through on the surface of the UV that solidified China ink layer 46, applying bond.At this moment, hard conating 44 still is the state of semi-solid preparation, therefore, even decorating film 40 is being sticked under the situation on the rough member, also can make hard conating 44 not crack.
After this, through utilizing the ultraviolet ray of the 1st light source irradiation that hard conating 44 is solidified.
As stated, even be used for the decorating film 40 of IML,, so can prevent the generation of the crackle of hard conating 44 also because the ultraviolet wavelength that is used in UV curing China ink layer 46 is different with the ultraviolet wavelength that is used to solidify hard conating 44.In addition, can reduce because of once more to the influence of fading of causing of the UV that solidified China ink layer 46 irradiation ultraviolet radiation etc.
In addition, make hard conating ultraviolet wavelength of solidifying and the ultraviolet wavelength that is used to UV China ink layer is solidified, be not limited to the wavelength of each above-mentioned embodiment, also can be other wavelength as being used to.
As stated; Ultraviolet wavelength through being used in 16 curing of UV China ink layer is different with the ultraviolet wavelength that is used to hard conating (protective layer) 12 is solidified; Even for the UV China ink after the inking is solidified and irradiation ultraviolet radiation; Also because this ultraviolet wavelength is and the ultraviolet wavelength different wavelengths that is used for curing protective coat therefore to suppress the curing of protective layer.Therefore, when decorating film is fixed in the injection mo(u)lding article,, can prevent also that protective layer from becoming fragile and situation about cracking even under the situation of oriented film.
In addition; Through using the 1st light source 27 and the 2nd light source 24; Can when the black layer 16 of UV is solidified, suppress hard conating 12 and solidify, the 1st light source 27 shines the ultraviolet ray that is used to make hard conating (protective layer) 12 curing, and 24 irradiations of the 2nd light source are used to make the ultraviolet ray of UV China ink layer 16 curing.
In addition; The ultraviolet wavelength region may that the 2nd light source 24 is shone has to comprise and is used to make the wavelength that hard conating (protective layer) 12 solidifies and is used to make wavelength that UV China ink layer 16 solidifies in interior wave-length coverage; The 2nd light source 24 disposes filter 25; When utilizing the 2nd light source 24 that UV China ink layer 16 is solidified; This filter 25 stops makes seeing through of wavelength that hard conating 12 solidifies, when UV China ink layer 16 is solidified, utilizes filter 25 eliminations to be used to the ultraviolet wavelength that hard conating 12 is solidified, and solidify thereby can suppress a hard conating 12 at 16 o'clock at UV curing China ink layer.
Description of reference numerals
10,40, decorating film; 11, base material; 12,44, hard conating (protective layer); 16,46, UV China ink layer; 18,48, adhesive phase; 20, injection mo(u)lding article; 21, moulding article main body; 23, head; 24, the 2nd light source; 25, filter; 27, the 1st light source; 30, mould; 32,34, divide die sinking; 36, die cavity; 38, cast gate; 42, releasing agent layer.

Claims (5)

1. decorating film, this decorating film is to utilize ink-jet printer will have ultra-violet solidified UV ink print in the decorating film that base material forms, it is characterized in that,
On above-mentioned base material, be formed with the UV China ink layer of protective layer with ultra-violet solidified semi-cured state and the solid state that utilizes above-mentioned ink-jet printer printing,
Being used to make above-mentioned UV China ink ultraviolet wavelength of solidifying and the ultraviolet wavelength that is used to above-mentioned protective layer is solidified is different wavelengths.
2. the manufacturing approach of a decorating film; The manufacturing approach of this decorating film is to be formed with on the base material with ultra-violet solidified protective layer that is semi-cured state, to utilize ink-jet printer and use to have the manufacturing approach that ultra-violet solidified UV China ink forms the decorating film of UV China ink layer; It is characterized in that
Different through being used in the ultraviolet wavelength of solidifying above-mentioned protective layer with the ultraviolet wavelength that is used to solidify above-mentioned UV China ink layer, the curing of the protective layer of inhibition semi-cured state when above-mentioned UV China ink layer is solidified.
3. the manufacturing approach of decorating film according to claim 2 is characterized in that,
The manufacturing approach of this decorating film is used the 1st light source and the 2nd light source, and the 1st light source irradiation is used to make the ultraviolet ray of above-mentioned protective layer curing, and the 2nd light source irradiation is used to make the ultraviolet ray of above-mentioned UV China ink layer curing.
4. the manufacturing approach of decorating film according to claim 3 is characterized in that,
The ultraviolet wavelength region may that above-mentioned the 2nd light source is shone has and comprises the wave-length coverage that is used to make the wavelength that above-mentioned protective layer solidifies and is used to make the wavelength that above-mentioned UV China ink layer solidifies,
Between above-mentioned the 2nd light source and above-mentioned decorating film, dispose filter, when utilizing above-mentioned the 2nd light source that above-mentioned UV China ink layer is solidified, this filter stops makes seeing through of wavelength that above-mentioned protective layer solidifies.
5. injection mo(u)lding article is characterized in that,
These injection mo(u)lding article are to form with following mode: in that described decorating film is configured under the state in the die cavity of the employed mould of injection mo(u)lding with claim 1; To inject resin material is injected in the die cavity; Thus; In mould, decorating film is fixed in wall portion and becomes one with wall portion, with decorating film with inject resin material be fixing integratedly after, irradiation is used to make the ultraviolet ray of the wavelength that above-mentioned protective layer solidifies and above-mentioned protective layer is solidified.
CN2012100889416A 2011-03-29 2012-03-29 Decorative film, manufacturing method for the same and injection molding product Pending CN102729550A (en)

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