False proof heat shrink films and preparation method thereof
Technical field
The invention belongs to anti-counterfeit package technical field, and in particular to a kind of false proof heat shrink films and preparation method thereof.
Background technology
Heat shrink films are widely used in food, tobacco, tealeaves, medicine, cosmetics, health products, sterilizing dinnerware, gift, five
The outer packing of golden plastic products, electronic apparatus etc. various products, especially in anomalistic object article or the combined type of commodity
In terms of (boundling) packaging, can meet commodity it is moistureproof it is dust-proof, touch-proof substitute for another surreptitiously, function, the and can such as transparent display increase product
Eye appeal.
Obtained from the packaging after product packaging, when being bought for ease of people some information such as product of product brand,
The place of production, operation instruction, composition, anti-counterfeiting mark etc. on packaging film, it is necessary to form the mark such as some words, figure, anti-counterfeiting mark.
The existing packaging film being made up of heat shrink films, all it is first to print or pass through other by marks such as these words, figure, anti-counterfeiting marks
Mode is formed directly on packaging film, and after the packaging film is coated on outside product, these mark identified presentation of information wrapping
Fill outside film, identified for buyer or user.But because these packaging films being made up of heat shrink films are to pass through thermal contraction
Characteristic completes the plastic foil of product, after being coated on by thermal contraction deformation on product, the mark printed on the packaging film
Deform therewith, so as to cause the Marks Illegible on packaging film, greatly affected marker recognition effect, and also influence packaging film
It is attractive in appearance.Itself it is to be used to distinguish product especially for the anti-fake mark for directly being formed or being printed on heat shrink films
The true and false, but after being deformed through overheat contraction, anti-fake mark thickens unclear, itself is difficult to distinguish, thus at all can not
Play anti-fake effect.Therefore, it is necessary to provide a kind of new thermal contraction packaging film, lacked to overcome existing for above-mentioned existing packaging film
Fall into.
The content of the invention
It is an object of the invention to provide a kind of false proof heat shrink films, can deform and are coated on outside product in packaging film thermal contraction
Afterwards, the mark above thermal contraction packaging film does not deform therewith substantially, so as to ensure the recognition effect of mark;Present invention simultaneously provides
The preparation methods of false proof heat shrink films, it is scientific and reasonable, simple and easy.
False proof heat shrink films of the present invention, including heat shrink films base layer, safety line layer, glue-line, holographic information layer,
UV light oil reservoirs are sequentially connected from top to bottom with heat shrink films base layer.
The width of described safety line layer is 2-5mm.
Described safety line layer is composed of multiple units, and the length of each unit is 10-15mm, and two neighboring list
One down upward for the graph-text content one of member.
Described safety line layer foregoing includes variable two-dimension code and chromatographic line;Variable two-dimension code is DM codes, chromatogram
Line is arranged closely together in a certain order by the different color lump of 3-5 bars.
Holographic information above described holographic information layer is one kind in rainbow vegetarian noodles, dynamic light beam or pixel luminous point,
The purpose is to strengthen the aesthetic appearance degree of packing material, while prevent because shrink film contraction distortion causes holographic information no longer clear.
Holographic information is to be transferred to heat shrink films substrates using UV, rather than is transferred to above by molding,
It can so avoid causing heat shrink films to deform in mold process.
Described heat shrink films base layer is identical with the percent thermal shrinkage of safety line layer, can so avoid because of percent thermal shrinkage not
Together, safety line layer and heat shrink films base layer is caused to come off or wrinkle etc. quality problems.
The preparation method of false proof heat shrink films of the present invention, step are as follows:
(1) heat shrink films are selected, using flexible printing machine in heat shrink films printed thereon uv gloss oil, then with holography
The OPP films of information are combined with each other, and are stripped down after UV lamp is dried, then by OPP films, so as to by the holography above OPP films
Information is copied to above heat shrink films, and OPP films and heat shrink films are wound respectively;
(2) heat shrink films are selected, print variable two-dimension code, chromatographic line and the picture and text related to product using digital printer
Content, then it is divided into safety line;
(3) adhesive is painted on safety line using gluing machine, safety line is then combined to the heat that step (1) obtains
In shrink film, you can.
Heat shrink films described in step (1) are OPP heat shrink films or PET heat shrink films.
The thickness of heat shrink films described in step (1) is 10-50 μm.
Heat shrink films described in step (2) are OPP heat shrink films or PET heat shrink films.
The thickness of heat shrink films described in step (2) is 12-20 μm.
The preparation method of false proof heat shrink films of the present invention, is comprised the following steps that:
(1) thickness is selected to utilize flexible printing machine (two discharging devices, two rewinding dresses for 10-50 μm of heat shrink films
Put) in heat shrink films printed thereon uv gloss oil, then it is combined with each other with the OPP films with holographic information, is dried by UV lamp
Afterwards, then by OPP films strip down, so as to which the holographic information above OPP films is copied to above heat shrink films, use two rewindings
Device, OPP films and heat shrink films are wound respectively.Specific process parameter:Roller mesh number is 300-500 mesh, and UV power is
800-1200 kilowatts, speed be 20-30 ms/min, UV gloss oil be Beijing it is green growth make the science and technology prosperous Co., Ltd production exempt from bottoming
Gloss oil, model LC-2701-1N.
(2) it is 12-20 μm of heat shrink films to select thickness, using digital printer printing variable two-dimension code, chromatographic line and
The graph-text content related to product, then it is divided into the safety line that width is 2-5mm.
(3) adhesive is painted on safety line using gluing machine, then safety line is combined to as defined in heat shrink films
Position.
The present invention compared with prior art, has the advantages that:
1st, heat shrink films of the invention can be after packaging film thermal contraction be deformed and is coated on outside product, on thermal contraction packaging film
The mark in face does not deform therewith substantially, so as to ensure the recognition effect of mark.
2nd, the present invention assigns holographic laser information on the basis of its deformation is not influenceed on heat shrink films.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention;
In figure:1st, safety line layer;2nd, glue-line;3rd, holographic information layer;4th, UV light oil reservoirs;5th, heat shrink films base layer.
Embodiment
The present invention is described further with reference to embodiments.
Embodiment 1
Customer order (10 myriametre)
(1) thickness is selected as 10 μm of OPP heat shrink films, using flexible printing machine in OPP heat shrink films printed thereons uv
Gloss oil, then it is combined with each other with the OPP films with holo-rainbow information, after UV lamp is dried, then by under the stripping of OPP films
Come, so as to which the holo-rainbow information above OPP films is copied to above OPP heat shrink films, by OPP films and OPP heat shrink films point
It Shou Juan not get up.Specific process parameter:Roller mesh number is 500 mesh, and UV power is 800 kilowatts, and speed is 30 ms/min, UV light
Oil be Beijing it is green growth make the science and technology prosperous Co., Ltd production exempt from bottoming gloss oil, model LC-2701-1N.
(2) thickness is selected to print DM codes, chromatographic line and and product using digital printer for 12 μm of OPP heat shrink films
Related graph-text content.Then it is divided into the safety line that width is 5mm.
(3) adhesive is painted on safety line using gluing machine, safety line is then combined to what step (1) obtained
Position as defined in OPP heat shrink films.
Embodiment 2
Customer order (20 myriametre)
(1) thickness is selected as 30 μm of PET heat shrink films, using flexible printing machine in PET heat shrink films printed thereons uv
Gloss oil, then it is combined with each other with the OPP films with holographic optical column information, after UV lamp is dried, then by under the stripping of OPP films
Come, so as to which the holographic information above OPP films is copied to above PET heat shrink films, then by OPP films and PET heat shrink films point
It Shou Juan not get up.Specific process parameter:Roller mesh number is 400 mesh, and UV power is 1000 kilowatts, and speed is 25 ms/min, UV light
Oil be Beijing it is green growth make the science and technology prosperous Co., Ltd production exempt from bottoming gloss oil, model LC-2701-1N.
(2) thickness is selected to print DM codes, chromatographic line and and product using digital printer for 18 μm of PET heat shrink films
Related graph-text content.Then it is divided into the safety line that width is 3mm.
(3) adhesive is painted on safety line using gluing machine, safety line is then combined to what step (1) obtained
Position as defined in PET heat shrink films.
Embodiment 3
Customer order (30 myriametre)
(1) thickness is selected as 50 μm of OPP heat shrink films, using flexible printing machine in OPP heat shrink films printed thereons uv
Gloss oil, then it is combined with each other with the OPP films with holographic luminous point, is stripped down after UV lamp is dried, then by OPP films, from
And copy to the holographic information above OPP films above OPP heat shrink films, and OPP films and OPP heat shrink films have been wound respectively
Come.Specific process parameter:Roller mesh number is 300 mesh, and UV power is 1200 kilowatts, and speed is 20 ms/min, and UV gloss oil is Beijing
It is green growth make the science and technology prosperous Co., Ltd production exempt from bottoming gloss oil, model LC-2701-1N.
(2) thickness is selected to print DM codes, chromatographic line and and product using digital printer for 20 μm of PET heat shrink films
Related graph-text content.Then it is divided into the safety line that width is 2mm.
(3) adhesive is painted on safety line using gluing machine, safety line is then combined to what step (1) obtained
Position as defined in OPP heat shrink films.