CN115464996B - IMR membrane with surface touch, formed part and preparation method - Google Patents
IMR membrane with surface touch, formed part and preparation method Download PDFInfo
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- CN115464996B CN115464996B CN202211120788.0A CN202211120788A CN115464996B CN 115464996 B CN115464996 B CN 115464996B CN 202211120788 A CN202211120788 A CN 202211120788A CN 115464996 B CN115464996 B CN 115464996B
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- imr
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- transfer printing
- molding
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- 239000012528 membrane Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims description 12
- 238000000465 moulding Methods 0.000 claims abstract description 64
- 238000012546 transfer Methods 0.000 claims abstract description 55
- 238000010023 transfer printing Methods 0.000 claims abstract description 41
- 238000003825 pressing Methods 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 306
- 238000000034 method Methods 0.000 claims description 37
- 238000000576 coating method Methods 0.000 claims description 23
- 238000001746 injection moulding Methods 0.000 claims description 22
- 239000011248 coating agent Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 238000004049 embossing Methods 0.000 claims description 11
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 9
- 238000007639 printing Methods 0.000 claims description 9
- 238000004381 surface treatment Methods 0.000 claims description 9
- 239000012790 adhesive layer Substances 0.000 claims description 8
- 229920000178 Acrylic resin Polymers 0.000 claims description 7
- 239000004925 Acrylic resin Substances 0.000 claims description 7
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 239000011737 fluorine Substances 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 238000005286 illumination Methods 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 230000035807 sensation Effects 0.000 claims description 4
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 3
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 claims description 3
- 238000003851 corona treatment Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 230000009477 glass transition Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 150000004812 organic fluorine compounds Chemical class 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 14
- 238000000926 separation method Methods 0.000 abstract description 9
- 239000010408 film Substances 0.000 description 61
- 238000001723 curing Methods 0.000 description 24
- 230000008569 process Effects 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 17
- 230000006872 improvement Effects 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
- 239000002390 adhesive tape Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- -1 Polyethylene Polymers 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 238000003848 UV Light-Curing Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000011882 ultra-fine particle Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007647 flexography Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
- B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
- B05D3/065—After-treatment
- B05D3/067—Curing or cross-linking the coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/12—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a coating with specific electrical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
- B05D7/04—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber to surfaces of films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14688—Coating articles provided with a decoration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14754—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles being in movable or releasable engagement with the coating, e.g. bearing assemblies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
- B29C2045/14237—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being deformed or preformed outside the mould or mould cavity
- B29C2045/14245—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being deformed or preformed outside the mould or mould cavity using deforming or preforming means outside the mould cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14688—Coating articles provided with a decoration
- B29C2045/14704—Coating articles provided with a decoration ink decorations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14754—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles being in movable or releasable engagement with the coating, e.g. bearing assemblies
- B29C2045/1477—Removable inserts, e.g. the insert being peeled off after moulding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses an IMR membrane with surface touch, which comprises an antistatic layer, a base membrane layer, a UV mould pressing layer, a UV transfer printing layer, a connecting layer, a pattern combination layer and a bonding layer which are sequentially arranged; the base film layer is used as a substrate, one side of the base film layer is coated with an antistatic layer, and the other side of the base film layer is provided with a UV mould pressing layer for transferring the texture structure of the base film layer to the UV transfer printing layer; the UV transfer printing layer is coated on the UV mould pressing layer and used for forming surface touch feeling on the surface of the manufactured part after being separated from the UV mould pressing layer; the UV transfer printing layer is coated with a connecting layer for improving the adhesiveness between the UV transfer printing layer and the pattern combination layer; the pattern combination layer is used for forming a pattern; the bonding layer is used for bonding the IMR film and the workpiece. The invention ensures the separation effect of the UV molding layer and the UV transfer layer, and the prepared IMR membrane and the molded part can have obvious surface touch and can meet the performance requirement of the common IMR molded part.
Description
Technical Field
The invention belongs to the technical field of surface treatment of plastic parts, and particularly relates to an IMR (in-mold reflective) membrane with surface touch, a molded part and a preparation method.
Background
The surface treatment of plastic parts is an important way for improving the attractive appearance and the wear resistance of the plastic parts, wherein the most widely applied IMR technology (in-mold decoration transfer printing) is a process which is green and environment-friendly, simple to operate and low in cost, and is increasingly favored by the automobile industry and the household appliance industry. The IMR technology is to transfer the pre-coated design pattern onto the solidified plastic part through the combination of the transfer film and the melt adhesive adsorbed onto the injection molding cavity, and the design pattern can be precisely positioned without additional post-treatment.
With the development of IMR technology and the continuous upgrading of consumer demand, the market has further requirements on the apparent effect of the product. The product is required to have beautiful patterns, and needs visual texture effects, even surface touch effects combining convex and concave effects, light and dark effects and hand feeling.
At present, the formation of the surface touch effect has two directions:
(1) The corresponding texture structure is formed on the die, the process is simple, but two difficult problems exist: firstly, the flexibility is poor, namely, one product can only form one texture, and if another texture is required to be formed, the mold development needs to be carried out again, so that the cost is high and the time is consumed; and secondly, the surface touch is realized by transferring the texture of the mold to the film and then transferring the film to the workpiece, so that partial loss occurs in the process of transferring the texture on the mold due to the existence of the film.
(2) And developing a brand new IMR membrane process route. In the method disclosed in patent CN 102555652A, a texture layer is designed in the IMR membrane, and the texture layer and the hardened layer are peeled off in the injection molding process to form a surface touch texture structure. However, the texture layer is arranged in the inner layer, and the release layer which is closely connected with the hardening layer can fill up grooves of the texture structure of the texture layer by peeling at the release layer, so that a large amount of texture is lost in the transferring process, and the real surface touch feeling is difficult to realize.
Disclosure of Invention
In order to meet one or more of the above defects or improvement requirements of the prior art, the invention provides an IMR membrane with surface touch, a formed part and a preparation method thereof, which ensure the separation of a UV compression molding layer and a UV transfer printing layer and can meet the performance requirements of a common IMR formed part while obtaining the IMR formed part with the surface touch.
In order to achieve the above object, according to a first aspect of the present invention, there is provided an IMR membrane having a surface touch, comprising an antistatic layer, a base film layer, a UV molding layer, a UV transfer layer, a tie layer, a pattern combining layer, and an adhesive layer, which are sequentially disposed;
the base film layer is used as a substrate, and one side of the base film layer is coated with an antistatic layer for removing static electricity, so that the membrane is prevented from adsorbing impurity particles such as dust due to static electricity; the other side of the printing plate is provided with a UV mould pressing layer for transferring the texture structure to the UV transfer printing layer;
the UV transfer printing layer is coated on the UV mould pressing layer and used for forming surface touch feeling on the surface of the manufactured part after being separated from the UV mould pressing layer;
The UV transfer printing layer is coated with a connecting layer for improving the adhesiveness between the UV transfer printing layer and the pattern combination layer;
the pattern combination layer is used for forming a pattern;
the bonding layer is used for bonding the IMR film and the workpiece.
As a further improvement of the present invention, the thickness of the UV molding layer is greater than the depth of the embossment of the texture of the UV molding layer, and the thickness of the UV transfer layer is greater than the depth of the embossment of the texture of the UV molding layer;
the convex-concave depth range is 2-30 mu m, and the thickness range of the UV mould pressing layer is 5-50 mu m; the thickness of the UV transfer layer ranges from 5 to 50 mu m.
As a further development of the invention, the glass transition temperature of the UV molding layer is 40℃to 100 ℃.
As a further improvement of the invention, the UV molding layer is a UV glue with low surface energy, in particular a material containing organosilicon or organofluorine; the UV molding layer comprises the following raw materials in parts by weight:
80-90 parts of organic silicon acrylic resin or organic fluorine acrylic resin; 1-3 parts of alpha-hydroxy ketone derivative; 1-3 parts of photoinitiator diphenyl ketone; 1-3 parts of active amine; 6-10 parts of trimethylolpropane triacrylate; 10-40 parts of toluene; butanone 10-40 parts.
As a further improvement of the invention, a linking layer is arranged between the pattern combination layer and the bonding layer.
According to a second aspect of the present invention there is provided an IMR formation having a tactile surface comprising said tactile surface IMR film, an article bonded thereto, the adhesive layer of the IMR film being bonded to the article.
According to a third aspect of the present invention, there is provided a method for preparing the IMR membrane having a surface feel, comprising the steps of:
s1: coating an antistatic layer on one side of the base layer film;
s2: UV molding is carried out on the other side of the base film, and convex-concave textures are formed on the base film; after completion, repeatedly curing by UV light until complete curing;
S3: coating a UV transfer printing layer on the UV mould pressing layer, and curing by UV light irradiation, wherein the UV transfer printing layer is incompletely cured in the step;
S4: coating a linking layer on the UV transfer printing layer;
S5: printing a corresponding pattern on the linking layer to form a pattern combination layer;
S6: and coating an adhesive layer on the pattern combination layer, and drying to form the IMR membrane with surface touch feeling.
As a further improvement of the invention, in the step S2, the curing power of the UV lamp is more than or equal to 300mj/cm 2; in the step S3, the curing power of the UV lamp is less than or equal to 150mj/cm 2.
As a further improvement of the present invention, surface treatment is performed on the side of the base film layer close to the UV molding layer to ensure close bonding of the base film and the UV molding layer; the surface treatment method includes but is not limited to corona treatment, flame treatment, solvent treatment and precoating treatment.
According to a fourth aspect of the present invention, there is provided a method for producing an IMR molded article having a surface touch, comprising the method for producing an IMR film having a surface touch, further comprising the steps of:
S7: transferring the pattern in the IMR film onto a workpiece by adopting an in-mold injection molding process, stripping the UV transfer layer from the UV transfer layer, and forming surface touch feeling by the UV molding layer on the surface of the workpiece;
s8: and (3) completely curing the UV transfer printing layer by illumination of a UV lamp to obtain the IMR forming part with surface touch.
In general, the above technical solutions conceived by the present invention have the following beneficial effects compared with the prior art:
(1) According to the IMR membrane and the formed part with the surface touch, the separation effect of the UV molding layer and the UV transfer layer is ensured by controlling the thicknesses of the UV molding layer and the UV transfer layer and the depths of convex-concave textures, the material of the UV molding layer and the connection effect of other layers in the IMR membrane, and the prepared IMR membrane and the formed part can realize relatively obvious surface touch and can meet the performance requirements of common IMR formed parts.
(2) According to the preparation method of the surface touch forming part, the UV molding layer and the UV transfer layer are separated during injection molding by controlling the curing degree of the UV molding layer and the UV transfer layer, the process is simple and reliable, the production is stable, the prepared texture is clear and obvious, and zero loss of design texture can be realized; the preparation method is good in flexibility, and molded parts with different texture structures can be prepared without changing the die.
Drawings
FIG. 1 is a schematic cross-sectional view of an IMR membrane with surface feel according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of an IMR molded article having a tactile sensation according to an embodiment of the present invention;
Fig. 3 is a process for preparing an IMR molded article having a tactile feel according to an embodiment of the invention.
Like reference numerals denote like technical features throughout the drawings, in particular: 1-an antistatic layer; 2-a base film layer; 3-UV molding layer; 4-UV transfer layer; 5-a tie layer; 6-a pattern assembly layer; 7-a bonding layer; 8-a workpiece; 10-a peeling layer; 11-a transfer layer; 101-surface tactile IMR film; 102-surface touch molding.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Referring to fig. 1 and 2, fig. 1 is a schematic cross-sectional structure of an IMR membrane with surface touch according to an embodiment of the invention; fig. 2 is a schematic cross-sectional structure of an IMR molded article having a tactile sensation of surface according to an embodiment of the invention. The surface touch IMR film 101 comprises an antistatic layer 1, a base film layer 2, a UV molding layer 3, a UV transfer printing layer 4, a connecting layer 5, a pattern combination layer 6 and a bonding layer 7 which are sequentially arranged. Wherein the antistatic layer 1, the base film layer 2 and the UV molding layer 3 form a stripping layer 10, the UV transfer printing layer 4, the connecting layer 5, the pattern combination layer 6 and the bonding layer 7 form a transfer printing layer 11, and the transfer printing layer 11 and the workpiece 8 are bonded to form an IMR molding part with surface touch feeling.
Specifically, the base film layer 2 has a function of a support carrier in the IMR membrane, and the base film layer 2 is preferably a thermoplastic resin, not particularly limited, selected from one or more of Polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polycarbonate (PC), acrylonitrile-styrene-acrylic copolymer (ASA), acrylonitrile-butadiene-styrene copolymer (ABS), and more preferably a PET film.
The thickness of the base film layer 2 is preferably 20 to 200. Mu.m, preferably 20 to 150. Mu.m, more preferably 50 to 100. Mu.m, and may be specifically selected according to practical needs. In this range, the subsequent printing process and injection molding process of the film can maintain better stability.
Alternatively, the base film layer 2 is transparent or translucent, colorless or colored, and is a normal film, a highlight film, or a matte film. Specifically, any combination of the above modes, such as a colorless transparent highlight film, a colorless semi-transparent matte film, etc., can be adopted, and specifically, different base film types can be selected according to the effect of the molded part.
Further, the base film layer 2 is coated with an antistatic layer 1 on one side thereof for preventing electrostatic adsorption of impurity particles such as dust, and the thickness of the antistatic layer 1 is preferably 0.1 μm to 5 μm.
Preferably, the antistatic layer 1 includes metal oxide-based conductive ultrafine particles, a polymer-based conductive composition, or a quaternary ammonium salt-based conductive material, wherein the metal oxide-based conductive ultrafine particles include antimony-doped tin oxide (ATO) or tin-doped indium oxide (ITO), or the like.
Further, the other side of the base film layer 2 is provided with a UV molding layer 3 for transferring the texture of the UV molding layer to a UV transfer layer, and the final UV transfer layer is positioned on the surface of the molded part to form surface touch feeling. Specifically, a UV molding process is adopted to form a UV molding layer 3 on the surface of the base film layer, that is, a textured structure is molded on the surface of the base film layer while a UV material is coated, and ultraviolet curing is performed.
The texture structure is in a shape (such as wiredrawing texture, dot matrix, strip shape, reticulate pattern and the like) with a surface with a set rule and convex-concave depth, and the texture structure can be specifically selected according to the type of the product and the effect to be achieved; meanwhile, the region of the texture structure is not particularly limited, and the texture structure may be formed in all regions or locally desired regions according to the type of the product.
The concave-convex depth of the texture structure can be determined according to the coating amount of the plate roller and the separation and stripping force of the UV molding layer and the UV transfer layer, if the texture is too deep, the greater the stripping force is, the shallower the texture is, and the smaller the stripping force is. The specific convex-concave depth ranges from 2 to 30 μm, preferably from 2 to 15 μm.
The thickness of the UV embossing layer 3 is preferably 5 to 50 μm and requires a greater depth of relief than the texture, depending on the texture and the desired feel requirements. The UV embossing layer is completed by a UV embossing process, the thickness of which is determined by the viscosity of the corresponding coated plate roll or raw materials used. On the one hand, when the thickness of the UV molding layer is less than 5 μm, the depth of texture convexo-concave is smaller, whereby the surface feeling imparted to the product by the convexo-concave shape is not obvious; if the film exceeds 50 μm, the subsequent film causes ink break phenomenon due to insufficient stretchability of the UV layer in the injection molding process, and the injection molding yield is lowered.
The UV embossing layer 3 is a UV adhesive with lower surface energy, and the surface tension is small, so that the separation of the UV embossing layer 3 and the UV transfer printing layer 4 is facilitated. The UV embossing layer is preferably a silicone or fluorine containing material. In one non-limiting embodiment, the UV molding layer comprises the following raw materials in parts by weight:
80-90 parts of organic silicon acrylic resin or organic fluorine acrylic resin; 1-3 parts of alpha-hydroxy ketone derivative; 1-3 parts of photoinitiator diphenyl ketone; 1-3 parts of active amine; 6-10 parts of trimethylolpropane triacrylate; 10-40 parts of toluene; butanone 10-40 parts.
Preferably, the glass transition temperature (Tg) of the UV molding layer 3 is 40℃to 100℃within this range, and good processing stability can be ensured. When Tg is higher than 100 ℃, the flexibility of the IMR membrane is reduced, the tensile property is reduced, the ink breaking phenomenon is easy to generate in the injection molding process, and the injection molding yield cannot be ensured; when Tg is less than 40 ℃, the blocking resistance of the molded layer is poor, i.e., it exhibits tackiness, and is liable to be anti-tacky when rolled. Therefore, high temperatures should be avoided during the storage of the film, preventing the UV molding layer from softening. After injection molding, the UV molding layer and the base film are separated from the molded part, so that the use environment has no influence on the molded part.
Further, the UV transfer layer 4 is coated on one side of the UV molding layer 3 by a coating process, and the UV transfer glue used for the UV transfer layer needs to be matched with the UV mold glue of the UV molding layer, that is, the UV molding layer 3 and the UV transfer layer 4 need to be ensured to be separated from each other in the injection molding process. The UV transfer printing layer is made of conventional commercial transfer printing glue, but the selected UV transfer printing glue has the advantages of good demolding performance, high hardness, good wear resistance and the like. In the process of forming the workpiece, the texture of the UV molding layer is transferred to the UV transfer layer by stripping between the UV molding layer and the UV transfer layer, so that the nondestructive transfer of the texture structure is realized, and the surface touch of the formed workpiece is formed.
As shown in fig. 2, the UV transfer layer is placed on the final molded article in the outermost layer, and the resulting surface texture is capable of imparting a surface feel that simultaneously serves as a hardened layer for protecting the article pattern from scratches and imparting excellent hardness, abrasion resistance, chemical resistance, and the like to the article.
Preferably, the thickness of the UV transfer layer 4 is 5 to 50 μm, more preferably 5 to 35 μm, and the thickness is required to be greater than the depth of the projections and recesses of the texture of the UV molding layer, i.e., the depth of projections and recesses of the UV molding layer is required to be completely filled, otherwise the UV molding layer and the UV transfer layer are difficult to peel off. If the UV transfer layer exceeds 50 mu m, the subsequent film also causes ink breaking phenomenon due to insufficient stretchability of the UV layer in the injection molding process, and the injection molding yield is reduced.
Further, the UV transfer layer 4 is coated with a tie layer 5 for improving adhesion between the UV transfer layer 4 and the pattern assembly layer 6, and a coating process is generally used, and the thickness is preferably 1 to 10 μm.
Further, a pattern combining layer 6 is provided on the joining layer 5 for imparting a pattern, color, gloss, etc. specific to the molded article. The pattern combining layer 6 may be formed entirely or in a locally desired region; the pattern content in the pattern combination layer can be selected according to requirements, for example, the patterns of the pattern combination layer comprise but are not limited to logo, characters, bright silver strips, solid colors, wood grains, cloth grains and the like, and functional windows such as a visible window and a hidden layer can also be arranged.
Materials used for the pattern composition layer 6 include, but are not limited to: pigments or dyes containing resins such as acrylic resins and polyesters; silver powder, matte powder, pearl powder, carbon powder, silicon powder, aluminum powder, zinc sulfide and the like which can highlight certain texture; a solvent capable of adjusting the viscosity of the ink; and a curing agent capable of setting the ink.
The thickness of the pattern layer 6 is determined by the number of printing, and is preferably in the range of 5 μm to 100 μm.
Further, an adhesive layer 7 is provided on the surface of the pattern assembly layer 6 for tightly bonding the IMR membrane to the resin molded member 8, and the adhesive layer 7 is preferably a heat-sensitive material.
In a preferred embodiment, an engagement layer (not shown) is optionally further provided between the pattern assembly layer 6 and the adhesive layer 7. Whether the connection layer is arranged is determined mainly according to the pattern combination layer 6, if the last layer of the pattern combination layer is a metal film layer or an ink layer added with particles (such as silver powder, matte powder and the like), in order to improve the adhesion between the layers, the connection layer needs to be arranged between the pattern combination layer 6 and the bonding layer 7, so that the problems of reduced adhesion performance of a formed part and the like caused by layering between the pattern combination layer 6 and the bonding layer 7 can be avoided.
The invention relates to an IMR membrane with surface touch and a preparation method of a formed part thereof, which comprises the following steps:
s1: coating an antistatic layer on one side of the base layer film;
s2: UV molding is carried out on the other side of the base film, and convex-concave textures are formed on the base film; after completion, repeatedly curing by UV light until complete curing;
S3: coating a UV transfer printing layer on the UV mould pressing layer, and curing by UV light irradiation, wherein the UV transfer printing layer is incompletely cured in the step;
S4: coating a linking layer on the UV transfer printing layer;
S5: printing a corresponding pattern on the linking layer to form a pattern combination layer;
s6: coating a bonding layer on the pattern combination layer, and drying to form an IMR membrane with surface touch;
S7: transferring the pattern in the IMR film onto a workpiece by adopting an in-mold injection molding process, stripping the UV transfer layer from the UV transfer layer, and forming surface touch feeling by the UV molding layer on the surface of the workpiece;
s8: and the UV transfer layer is completely solidified by illumination of a UV lamp, so that the surface hardness and the friction resistance of the formed part are ensured, and the IMR formed part with surface touch feeling is obtained.
Further preferably, in step S2, the curing power of the UV lamp is more than or equal to 300mj/cm 2; in the step S3, the curing power of the UV lamp is less than or equal to 150mj/cm 2.
In step S2, in order to ensure that the UV molding layer and the UV transfer layer can be separated from each other in the injection molding process, the UV molding layer needs to be fully cured, and the UV molding layer can be realized by a UV curing machine. The method can be used for repeatedly curing for a plurality of times according to different illumination intensities and types until the curing is completed. In a preferred embodiment, the UV lamp curing power is ≡300mj/cm 2.
In step S3, the UV transfer layer material is generally a photo-curing system, and is heated to dry the solvent while being coated on the UV molding layer, and then immediately cured by ultraviolet irradiation. However, unlike UV molding layers, it is necessary to ensure that the UV transfer layer is surface-dried after light curing, and that the roll is not anti-sticking while ensuring that it is not fully cured. That is, the UV transfer layer is made "dry" as much as possible, but not "dry".
Therefore, the curing process of the UV transfer layer needs to control the light intensity of the UV lamp source, and the specific light intensity is determined according to different transfer glue materials. In a preferred embodiment, the UV lamp curing power is 150mj/cm 2 or less. The purpose is to improve the adhesion between the UV transfer layer and the subsequent tie layer. This is because the nature of the UV material itself determines its poor adhesion to other materials, which can be attacked by the solvent in the subsequently applied tie layer in the event that the UV transfer layer is not fully cured, thereby improving the adhesion of both.
In step S5, the pattern assembly layer may specifically select different processes according to practical requirements, including but not limited to the following processes: screen printing, gravure printing, flexography, etc., as well as any combination of the above processes. The pattern layer may be a metal thin film layer formed by depositing a metal by a vacuum deposition method or a sputtering method, or may be formed by applying an etching method to the metal thin film layer. The above are all prior art, and can be specifically selected according to the effect that the molded part needs to achieve.
It is further preferred that the antistatic layer is coated again before injection molding in step S7. The antistatic effect can be weakened along with the time, and according to actual needs, an antistatic layer can be coated again in any link before injection molding; the antistatic layer is preferably recoated after the membrane is made and before injection molding.
Further preferably, surface treatment is performed on one side of the base film layer close to the UV molding layer to ensure tight bonding of the base film and the UV molding layer; the surface treatment method includes, but is not limited to, corona treatment, flame treatment, solvent treatment and precoating treatment, and is specifically selected according to the material of the base film layer. Precoating treatment is preferred. The surface treatment is required to be selected according to actual conditions on one side of the base film layer close to the antistatic layer, so long as the antistatic layer and the base film layer can be tightly combined, and the reverse adhesion can not occur when the membrane is rolled up.
It should be noted that in steps S1 to S8, other process steps not described in the prior art may be adopted.
For a better understanding of the products and methods of the present invention, the following specific examples are provided:
example 1:
an IMR membrane with surface touch and a formed part are provided, and the preparation method is as follows:
1) Coating an antistatic agent on one side of a 50 mu m double-sided precoated PET base film, and drying after finishing;
2) Coating a layer of UV material on the other side of the PET base film, forming convex-concave textures on the surface of the PET base film by adopting a UV molding process, and immediately performing ultraviolet curing to form a UV molding layer; the thickness of the whole UV mould pressing layer is 10 mu m, and the thickness of the texture convex-concave is 5 mu m; the UV material adopts a master model adhesive, and the system of the UV material contains organic silicon or fluorine and has lower surface energy; the UV curing power was 400mj/cm 2, which ensured adequate curing of the UV embossed layer.
3) Coating a UV transfer layer on the UV molding layer, immediately performing ultraviolet curing, and enabling the UV transfer layer to be incompletely cured (a state that scratches are scraped on the UV transfer layer but a coiled material is not reversely adhered); the overall thickness of the UV transfer layer was 10 μm;
4) Coating a layer of linking layer on the transfer printing layer to improve the adhesive force of the transfer printing layer;
5) Printing patterns on the connecting layer through a screen printing process;
6) Forming a layer of bonding layer on the printing layer through a coating process, namely finishing the preparation of the IMR membrane;
7) And (3) placing the IMR membrane in a mold cavity by adopting an in-mold transfer printing process, tightly combining a plastic melt with an adhesive layer, mutually separating a UV molding layer from a UV transfer printing layer, placing the UV transfer printing layer on the surface of a formed part to form convex-concave textures, and completely curing the UV transfer printing layer by illumination of a UV lamp, so that the preparation of the IMR formed part is completed.
Example 2:
An IMR film and molded article having a surface feel are provided, the method of making which differs from example 1 in that:
the embossing layer thickness of the UV embossing layer is changed from 10 mu m to 20 mu m, and the texture convex-concave thickness is changed from 5 mu m to 15 mu m; the UV transfer layer thickness was changed from 10 μm to 20 μm.
Comparative example 1:
an IMR film and molded article having a tactile surface is provided, which is produced by a method differing from example 2 in that:
the UV transfer layer thickness was changed from 20 μm to 60 μm.
Comparative example 2:
An IMR film and molded article having a surface feel are provided, the method of making which differs from example 1 in that:
The UV transfer layer thickness was changed from 10 μm to 4 μm.
Comparative example 3:
An IMR film and molded article having a surface feel are provided, the method of making which differs from example 1 in that:
The UV molding layer is made of a material which is changed from a master mold glue into a common UV glue, namely the system does not contain organic silicon or fluorine, and has higher surface energy.
Comparative example 4:
An IMR film and molded article having a surface feel are provided, the method of making which differs from example 1 in that:
the UV curing energy of the UV molding layer was 200mj/cm 2.
The differences in examples 1 to 2 and comparative examples 1 to 4 are shown in Table 1.
TABLE 1 comparative differences in examples 1-2 and comparative examples 1-4
The ability of the UV molding layer and the transfer layer to peel away from each other during injection molding is critical to the present invention, and table 2 shows the separation of the two in examples and comparative examples. As can be seen from table 2, examples 1 to 2 and comparative example 1 have functional integrity for producing surface touch molded articles. According to the invention, through improvement of materials and processes, the separation effect of the UV molding layer and the UV transfer layer is ensured.
TABLE 2 separation of UV embossed layer from transfer layer in examples 1-2 and comparative examples 1-4
| Example 1 | Example 2 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | |
| Whether separation is possible during injection molding | √ | √ | √ | × | × | × |
The molded articles of example 1, example 2 and comparative example 1 were tested, including production stability, functionality, performance tests, specifically as follows:
1) Checking ink breaking condition of the IMR membrane during injection molding by a visual method;
2) Checking whether the surface touch feeling of the IMR forming part is obvious or not by a touch method;
3) Hardness: paint film hardness was determined by the GB/T6739 2006 method for colored paint and varnish pencil test using a 500g weight-bearing pencil durometer test;
4) Surface abrasion resistance: the EF74 rubber is used for adhering 500g, the back and forth friction is carried out on the same position on the surface of the product for 150 times, and the friction distance is more than 2cm;
5) Adhesion force: referring to GBT 9286 2021, a white lattice knife is adopted to cross cut 100 small grids on the surface of a formed part, the cutting spacing is 1.0mm, and the cutting is required to reach a substrate; the 3M adhesive tape is stuck to a cutting area, the adhesive tape is driven by hands to be solid, no bubbles are guaranteed, the adhesive tape is quickly pulled down at an angle of 60 degrees after the adhesive tape is placed for 5 minutes, and the stripping condition of the surface layer in a grid area is observed.
Table 3 test results for example 1, example 2 and comparative example 1
Description of adhesion: level 0 indicates that the cut edge is completely smooth and no drop occurs in the grid; grade 1 indicates that there is some coating shedding at the kerf intersections, but the affected intersection cut area is no more than 5%; grade 2 indicates that there is coating shedding at the kerf intersections/along the kerf edges, with the affected cross-cut area being greater than 5% and no greater than 15%.
As can be seen from Table 3, comparative example 1 has an ink break problem, the molded article has defects, and examples 1 and 2 satisfy normal production requirements and other conventional performance requirements.
As can be seen from tables 2 and 3, the IMR membrane and the molded part provided by the invention can realize relatively obvious surface touch, have reliable process and stable production, and can meet the performance requirements of common IMR molded parts, such as higher hardness, better wear resistance and outstanding adhesive force performance.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (9)
1. The preparation method of the IMR membrane with the surface touch is characterized by comprising the following steps of:
s1: coating an antistatic layer on one side of the base layer film;
s2: coating a UV material on the other side of the base film, and performing UV mould pressing to form convex-concave textures; after the completion, repeatedly curing by UV light until the complete curing is achieved, and forming a UV molding layer;
S3: coating a UV transfer printing layer on the UV mould pressing layer, and curing by UV light irradiation, wherein the UV transfer printing layer is incompletely cured in the step;
S4: coating a linking layer on the UV transfer printing layer;
S5: printing a corresponding pattern on the linking layer to form a pattern combination layer;
s6: coating a bonding layer on the pattern combination layer, and drying to form an IMR membrane with surface touch;
the IMR membrane with the surface touch sense, which is prepared by the preparation method, comprises an antistatic layer, a base membrane layer, a UV mould pressing layer, a UV transfer printing layer, a connecting layer, a pattern combination layer and a bonding layer which are sequentially arranged;
The base film layer is used as a substrate, and one side of the base film layer is coated with an antistatic layer for removing static electricity; the other side of the printing plate is provided with a UV mould pressing layer for transferring the texture structure to the UV transfer printing layer; the UV molding layer is UV glue with low surface energy;
the UV transfer printing layer is coated on the UV mould pressing layer and used for forming surface touch feeling on the surface of the manufactured part after being separated from the UV mould pressing layer;
The UV transfer printing layer is coated with a connecting layer for improving the adhesiveness between the UV transfer printing layer and the pattern combination layer;
the pattern combination layer is used for forming a pattern;
the bonding layer is used for bonding the IMR film and the workpiece.
2. The method of manufacturing an IMR membrane having a surface feel according to claim 1, wherein the thickness of the UV embossing layer is greater than the depth of the embossments of the texture of the UV embossing layer, and the thickness of the UV transfer layer is greater than the depth of the embossments of the texture of the UV embossing layer;
the convex-concave depth range is 2-30 mu m, and the thickness range of the UV mould pressing layer is 5-50 mu m; the thickness of the UV transfer layer ranges from 5 to 50 mu m.
3. The method of producing an IMR film having a tactile surface according to claim 1, wherein the glass transition temperature of the UV molding layer is 40 ℃ to 100 ℃.
4. The method of producing an IMR membrane with surface feel according to claim 1, characterized in that the UV-embossed layer is in particular a silicone or organofluorine containing material; the UV molding layer comprises the following raw materials in parts by weight:
80-90 parts of organic silicon acrylic resin or organic fluorine acrylic resin; 1-3 parts of alpha-hydroxy ketone derivative; 1-3 parts of photoinitiator diphenyl ketone; 1-3 parts of active amine; 6-10 parts of trimethylolpropane triacrylate; 10-40 parts of toluene; butanone 10-40 parts.
5. The method for preparing an IMR membrane with a tactile sensation according to claim 1, wherein a linking layer is further provided between the pattern combination layer and the adhesive layer.
6. The method for producing an IMR membrane having a tactile sensation according to claim 1, wherein in step S2, the UV lamp curing power is not less than 300mj/cm 2; in the step S3, the curing power of the UV lamp is less than or equal to 150mj/cm 2.
7. The method of manufacturing an IMR membrane having a surface feel according to claim 1, wherein the surface treatment is performed on a side of the base membrane layer adjacent to the UV molding layer to ensure close bonding of the base membrane layer and the UV molding layer; the surface treatment method includes but is not limited to corona treatment, flame treatment, solvent treatment and precoating treatment.
8. An IMR molded article having a surface touch, comprising the IMR film having a surface touch produced by the method for producing an IMR film having a surface touch of any one of claims 1 to 7, and an article bonded thereto.
9. A method of producing an IMR molded article having a surface touch, for producing the IMR molded article having a surface touch of claim 8, further comprising the steps of:
s7: transferring the pattern in the IMR film onto a workpiece by adopting an in-mold injection molding process, and stripping the UV transfer layer from the UV molding layer, wherein the UV transfer layer is positioned on the surface of the workpiece to form surface touch;
s8: and (3) completely curing the UV transfer printing layer by illumination of a UV lamp to obtain the IMR forming part with surface touch.
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