CN102744939A - Thermosetting type IMD film and preparation method thereof - Google Patents

Thermosetting type IMD film and preparation method thereof Download PDF

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Publication number
CN102744939A
CN102744939A CN2012102365896A CN201210236589A CN102744939A CN 102744939 A CN102744939 A CN 102744939A CN 2012102365896 A CN2012102365896 A CN 2012102365896A CN 201210236589 A CN201210236589 A CN 201210236589A CN 102744939 A CN102744939 A CN 102744939A
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China
Prior art keywords
layer
basement membrane
imd film
film
pet
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Pending
Application number
CN2012102365896A
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Chinese (zh)
Inventor
孝睿
皇甫宁波
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NANJING JIANGYA DIGITAL TECHNOLOGY Co Ltd
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NANJING JIANGYA DIGITAL TECHNOLOGY Co Ltd
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Priority to CN2012102365896A priority Critical patent/CN102744939A/en
Publication of CN102744939A publication Critical patent/CN102744939A/en
Pending legal-status Critical Current

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Abstract

The invention provides a thermosetting type IMD film and a preparation method thereof. The IMD film comprises a PET (polyester) base film, wherein an anti-scraping coating layer is arranged on the upper surface of the PET base film; a film layer is arranged on the anti-scraping coating layer; an ink adhesion layer is arranged on the lower surface of the PET base film; the film layer is arranged on the ink adhesion layer; and the anti-scraping coating layer is a thermosetting coating layer. The preparation method comprises the following steps of performing corona on the PET base film; coating the PET base film; drying the coated PET base film; drying and curing the dried PET base film; coating the ink adhesion layer on the back of the thermoset PET base film; and drying and curing the PET base film of which the back is coated with the ink adhesion layer, coating the film on the two surfaces, and curing, rolling and cutting the film. The thermosetting type IMD film has the characteristics of high transmittance, flexibility and adhesion. The process of strengthening the coating is a progressive temperature raising process, the cross-linking of the coating is fuller, and the requirements of high transmittance, flexibility and adhesion are met.

Description

A kind of heat curing-type IMD film and preparation method thereof
Technical field
The present invention relates to interior trim membrane technology field, be meant a kind of heat curing-type IMD film and preparation method thereof especially.
Background technology
As everyone knows, the surface of plastic products has the characteristics of not wear-resisting wiping.To these characteristics, in recent years, a kind of injection moulding new technology of new interior trim film was met the tendency and had been produced, i.e. the in-mould injection technology.Be specially, earlier with can scratch resistant enhanced coating on the surfaces coated of a PET film, another side be coated the printing ink adsorption layer.When the processing plastic goods, earlier required color, pattern, trade mark etc. are printed on internal layer.According to the structure thermal finalization of product, put into the injection machine injection moulding then again, interior trim film and plastics are held be one.Again because some working of plastics needs form (like the panel of the panel of mobile phone, washing machine and a lot of instrument and meter dishes etc.); So (IMD, IML, IMR) film of a kind of high transmission rate, high scratch resistance, high-flexibility, high ink adhesion has become the key of modern injection moulding industry.
Present common practice both domestic and external is to adopt UV coating to do the strengthening layer on surface.But along with constantly popularizing of this technology.To light transmittance, pliability, the adhesive force of strengthening layer requires increasingly high.The UV coating is that moment is aging, and the one-tenth film density that therefore causes is low, and film-forming flexibility is poor, is difficult to adapt to the big requirement of workpiece modification.
Therefore, the appearance of the IMD film of a kind of high printing opacity, high pliable and tough and high adhesion force is just necessary.
Summary of the invention
The present invention proposes a kind of heat curing-type IMD film, and it is low to have solved in the prior art light transmittance of IMD film, and pliability is poor, the technical problem that adhesive force is low.
The present invention proposes a kind of preparation method of heat curing-type IMD film, and this preparation method has the process of a ladder-elevating temperature, makes the crosslinked more abundant of coating, thereby makes product have high printing opacity, the characteristics of high pliable and tough and high adhesion force.
Technical scheme of the present invention is achieved in that
A kind of heat curing-type IMD film; This IMD film comprises: the PET basement membrane, be provided with coating layer at the upper surface of said PET basement membrane, and said coating layer is provided with rete; Lower surface at the PET of institute basement membrane is provided with the printing ink adhesion layer, and said printing ink adhesion layer is provided with rete; Wherein said scratch resistance coating layer is the coating layer of heat cure.
As optimized technical scheme, described coating layer comprises bottoming coupling layer and slope stream extruding scratch resistance coating layer.
As optimized technical scheme, described bottoming coupling layer is 1 layer.The thickness of bottoming coupling layer is 1-2um.
As optimized technical scheme, described slope stream extruding scratch resistance coating layer is 1 layer.The thickness of slope stream extruding scratch resistance coating layer is 3-6um.
As optimized technical scheme, described rete is 1 layer, and the material of rete is PE or PET.
As optimized technical scheme, the hardness of described heat curing-type IMD film is below 2H, to satisfy the requirement of injection moulding.
A kind of preparation method of heat curing-type IMD film comprises:
Corona PET basement membrane;
On said PET basement membrane, be coated with;
Said PET basement membrane after the coating is dry;
With the heat cure of dried said PET basement membrane;
With the said PET basement membrane back of the body inking adhesion layer after the heat cure;
With the said PET basement membrane baking and curing of carrying on the back after inking adheres to, two-sided multiple film, slaking, rolling is cut, and promptly gets.
As optimized technical scheme, the temperature of said drying is 40-80 ℃.Drying is carried out in the by stages.
As optimized technical scheme, the process conditions of said heat cure are: temperature 90-150 ℃, and time 45-90min.
As optimized technical scheme, said coating comprises: the step of the step of bottoming coating and slope stream extrusion coated.Slope stream extrusion coated is the undamaged material loading technology in a kind of surface, makes coating surface more smooth.
As optimized technical scheme, the temperature of said baking and curing is 50-70 ℃.
Beneficial effect
(1) heat curing-type IMD film of the present invention has high printing opacity, height is pliable and tough and the characteristics of high adhesion force;
(2) technology of employing heat cure of the present invention, these are aging different with traditional ultra violet lamp moment, and coating layer has the process of a ladder-elevating temperature, makes the crosslinked more abundant of coating, thereby reaches high printing opacity, the requirement of high pliable and tough and high adhesion force; Adopt heat curing process, can be according to the height of solidification temperature, the hardness on controlling diaphragm surface adapts to various demand;
(3) the present invention adopts slope stream extrusion coated, makes the material loading not damaged, and coating surface is very smooth.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of heat curing-type IMD film of the embodiment of the invention 1;
Fig. 2 is the process chart of a kind of heat curing-type IMD film of the embodiment of the invention 1;
Fig. 3 is the structural representation of a kind of heat curing-type IMD film of the embodiment of the invention 2.
The specific embodiment
To carry out clear, intactly description to the technical scheme in the embodiment of the invention below, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Embodiment 1
As shown in Figure 1: a kind of heat curing-type IMD film comprises: PET basement membrane 1, scratch resistance coating layer 2, rete 3, and printing ink adhesion layer 4.Be provided with scratch resistance coating layer 2 at PET basement membrane 1 upper surface 11, scratch resistance coating layer 2 is provided with rete 3, is provided with printing ink adhesion layer 4 at PET basement membrane lower surface 12, and printing ink adhesion layer 4 is provided with rete 3.The material of rete 3 is PE.Coating layer 2 is two-layer.Ground floor is bottoming coupling layer 21, and the second layer is a slope stream extruding scratch resistance coating layer 22.Bottoming coupling layer 21 is 1 layer.The thickness of bottoming coupling layer 21 can be selected 1-2um, and selecting the thickness of bottoming coupling layer 21 in the present embodiment is 1um.Slope stream extruding scratch resistance coating layer 22 is 1 layer.The thickness of slope stream extruding scratch resistance coating layer 22 can be selected 3-6um, and selecting slope stream extruding scratch resistance coating layer 22 thickness in the present embodiment is 3um.These thickness can be done suitable adjustment according to the needs of reality.The hardness of this heat curing-type IMD film is 2H, to satisfy the requirement of Shooting Technique.
As shown in Figure 2: above-mentioned heat curing-type IMD film gets through following method preparation, comprising: corona PET basement membrane; Coating; Dry; Heat cure; Back of the body inking adhesion layer; Baking and curing; Two-sided multiple film; Slaking; Rolling; Cut.Specific as follows:
Step I: corona PET basement membrane; Tack in order to the REINFORCED PET basement membrane;
Coating process adopted for 2 steps carried out, i.e. step II and III;
The step II: on said PET basement membrane, use coupling agent to be the aminoethyl aminopropyl trimethoxysilane, methacryloxypropyl trimethoxy silane, the amalgam of the diffusing Ethoxysilane of phenylamino methyl, coating feels secure; Make the PET basement membrane after handling better to combine with the material of subsequent step;
The step III: the PET basement membrane after the coating that will feel secure carries out slope stream extrusion coated; The cured film coating liquid that uses in this step is heat curing coating; This process material loading not damaged makes that the surface of PET basement membrane is very smooth;
The step IV: the PET basement membrane after will being coated with carries out drying 40-80 ℃ of by stages; Interval temperature is respectively 40 ℃, and 60 ℃, 80 ℃; The by stages drying can make the more abundant of solvent evaporates, and residual lacking on the film makes that the heat curing-type IMD film that makes is more even;
The step V: with dried PET basement membrane at 120 ℃ of heat cure 45min; The temperature of heat cure can be chosen 90-150 ℃ in this step, according to the temperature of heat cure, can regulate the hardness of material surface, and the result of ordinary test is: in solidification temperature is 120 when spending, and hardness is 2H; In solidification temperature is 150 when spending, and hardness is 3H.So that it satisfies various demand; The time of heat cure can be chosen 45-90min;
The step VI: the said PET basement membrane back of the body after the heat cure is coated with the acetate butyl cellulose, and the coating that acrylic resin and microvoid nano silicon are synthesized has increased ink adhesion greatly;
The step VII: the said PET basement membrane baking and curing after will carrying on the back inking and adhering to, two-sided multiple film, slaking, rolling is cut, and promptly gets; Wherein the temperature of baking and curing does not have special qualification, generally can select 50-70 ℃, and the temperature of the baking and curing in the present embodiment is 60 ℃.
Embodiment 2
As shown in Figure 3: a kind of heat curing-type IMD film comprises: PET basement membrane 1, scratch resistance coating layer 2, rete 3, and printing ink adhesion layer 4.Be provided with scratch resistance coating layer 2 at PET basement membrane 1 upper surface 11, scratch resistance coating layer 2 is provided with rete 3, is provided with printing ink adhesion layer 4 at PET basement membrane lower surface 12, and printing ink adhesion layer 4 is provided with rete 3.The material of rete 3 is PET.Scratch resistance coating layer 2 is two-layer.Ground floor is bottoming coupling layer 21, and the second layer is a slope stream extruding scratch resistance coating layer 22.Bottoming coupling layer 21 is two-layer, promptly 211,212.The thickness of bottoming coupling layer 21 can be selected 1-2um, and selecting the thickness of bottoming coupling layer 21 in the present embodiment is 2um.Slope stream extruding scratch resistance coating layer 22 is two-layer, promptly 221,222.The thickness of slope stream extruding scratch resistance coating layer 22 can be selected 3-6um, and selecting slope stream extruding scratch resistance coating layer 22 thickness in the present embodiment is 4um.These thickness can be done suitable adjustment according to the needs of reality.The hardness of this heat curing-type IMD film is 2H, to satisfy the requirement of Shooting Technique.
The present invention adopts the technology of heat cure, and these are aging different with traditional ultra violet lamp moment, and strengthened coat has the process of a ladder-elevating temperature, makes the crosslinked more abundant of coating, thereby reaches high printing opacity, the requirement of high pliable and tough and high adhesion force; Adopt heat curing process, can be according to the height of solidification temperature, the hardness on controlling diaphragm surface generally need be below hardness 2H, to satisfy the requirement of Shooting Technique.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (9)

1. heat curing-type IMD film; This IMD film comprises: the PET basement membrane; It is characterized in that be provided with the scratch resistance coating layer at the upper surface of said PET basement membrane, said scratch resistance coating layer is provided with rete; Lower surface at the PET of institute basement membrane is provided with the printing ink adhesion layer, and said printing ink adhesion layer is provided with rete; Wherein said scratch resistance coating layer is the coating layer of heat cure.
2. a kind of heat curing-type IMD film according to claim 1 is characterized in that, described scratch resistance coating layer comprises bottoming coupling layer and slope stream extruding scratch resistance coating layer.
3. a kind of heat curing-type IMD film according to claim 2 is characterized in that described bottoming coupling layer is 1 layer.
4. a kind of heat curing-type IMD film according to claim 2 is characterized in that, described slope stream extruding scratch resistance coating layer is 1 layer.
5. a kind of heat curing-type IMD film according to claim 1 and 2 is characterized in that described rete is 1 layer, and the material of rete is PE or PET.
6. the preparation method of a heat curing-type IMD film comprises:
Corona PET basement membrane;
On said PET basement membrane, be coated with;
Said PET basement membrane after the coating is dry;
With the heat cure of dried said PET basement membrane;
With the said PET basement membrane back of the body inking adhesion layer after the heat cure;
With the said PET basement membrane baking and curing of carrying on the back after inking adheres to, two-sided multiple film, slaking, rolling is cut, and promptly gets.
7. the preparation method of a kind of heat curing-type IMD film according to claim 6 is characterized in that, the temperature of said drying is 40-80 ℃.
8. the preparation method of a kind of heat curing-type IMD film according to claim 6 is characterized in that, the process conditions of said heat cure are: temperature 90-150 ℃, and time 45-90min.
9. according to the preparation method of the described a kind of heat curing-type IMD film of the arbitrary claim of claim 6-8, it is characterized in that said coating comprises: the step of the step of bottoming coating and slope stream extrusion coated.
CN2012102365896A 2012-07-09 2012-07-09 Thermosetting type IMD film and preparation method thereof Pending CN102744939A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015184343A1 (en) 2014-05-30 2015-12-03 Absolute Exhibits, Inc. Thermoset in-mold finishing film
CN105196660A (en) * 2015-09-21 2015-12-30 东莞市纳利光学材料有限公司 Protective film capable of being formed by means of hot pressing and preparation method thereof
CN108300341A (en) * 2016-08-23 2018-07-20 重庆迅昌汽车零部件有限公司 A kind of double faced adhesive tape processing technology

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Publication number Priority date Publication date Assignee Title
CN1572484A (en) * 2003-06-18 2005-02-02 拜尔材料科学股份公司 Composite material system for in-mold decoration
CN101077672A (en) * 2006-05-26 2007-11-28 鸿富锦精密工业(深圳)有限公司 Film membrane for modulo inner decoration and manufacturing method thereof and modulo inner decoration manufacture process
CN101200156A (en) * 2007-12-14 2008-06-18 无锡市红光标牌有限公司 Surface decoration and process for making the same
JP2009082890A (en) * 2007-10-03 2009-04-23 Konica Minolta Opto Inc Manufacturing method for optical resin film and hard coat film
TW201018581A (en) * 2008-11-12 2010-05-16 Entire Technology Co Ltd Method for manufacturing multi-function plastic thin film and IMD process using the same
US20110274894A1 (en) * 2009-01-19 2011-11-10 Avery Dennison Corporation Durable In-Mold Decoration Laminates Using Semi-Crystalline Polymer as Top Film
CN202669105U (en) * 2012-07-09 2013-01-16 南京市江亚数码科技有限公司 Thermosetting type in-mold decoration (IMD) film

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1572484A (en) * 2003-06-18 2005-02-02 拜尔材料科学股份公司 Composite material system for in-mold decoration
CN101077672A (en) * 2006-05-26 2007-11-28 鸿富锦精密工业(深圳)有限公司 Film membrane for modulo inner decoration and manufacturing method thereof and modulo inner decoration manufacture process
JP2009082890A (en) * 2007-10-03 2009-04-23 Konica Minolta Opto Inc Manufacturing method for optical resin film and hard coat film
CN101200156A (en) * 2007-12-14 2008-06-18 无锡市红光标牌有限公司 Surface decoration and process for making the same
TW201018581A (en) * 2008-11-12 2010-05-16 Entire Technology Co Ltd Method for manufacturing multi-function plastic thin film and IMD process using the same
US20110274894A1 (en) * 2009-01-19 2011-11-10 Avery Dennison Corporation Durable In-Mold Decoration Laminates Using Semi-Crystalline Polymer as Top Film
CN202669105U (en) * 2012-07-09 2013-01-16 南京市江亚数码科技有限公司 Thermosetting type in-mold decoration (IMD) film

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015184343A1 (en) 2014-05-30 2015-12-03 Absolute Exhibits, Inc. Thermoset in-mold finishing film
US10357909B2 (en) 2014-05-30 2019-07-23 Absolute Exhibits, Inc. Thermoset in-mold finishing film
CN105196660A (en) * 2015-09-21 2015-12-30 东莞市纳利光学材料有限公司 Protective film capable of being formed by means of hot pressing and preparation method thereof
CN108300341A (en) * 2016-08-23 2018-07-20 重庆迅昌汽车零部件有限公司 A kind of double faced adhesive tape processing technology

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