CN110510254A - Package sheet material - Google Patents
Package sheet material Download PDFInfo
- Publication number
- CN110510254A CN110510254A CN201810497657.1A CN201810497657A CN110510254A CN 110510254 A CN110510254 A CN 110510254A CN 201810497657 A CN201810497657 A CN 201810497657A CN 110510254 A CN110510254 A CN 110510254A
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- China
- Prior art keywords
- layer
- ink
- printing
- sheet material
- package sheet
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/12—Stencil printing; Silk-screen printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/22—Metallic printing; Printing with powdered inks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
Abstract
The invention discloses a kind of package sheet materials, package sheet material of the invention is used to form independent packaging, successively there is base, printing layer and waterproof layer from inside to outside, at least partly there is metal layer of ink between base and printing layer, so that visual metallic luster and/or metal-like is presented in package sheet material appearance, richer visual experience can be given, be obviously improved packaging quality and aesthetic feeling.
Description
Technical field
The present invention relates to package of liquid products field, especially a kind of package sheet material.
Background technique
In the composite packaging field of liquid product (such as food liquid or beverage), with the development of product and the need of client
It wants, while compound package material develops towards low cost and high performance direction, beautiful requirement is enriched to packaging material appearance
It is increasingly promoted, the metallic luster that compound package material surface is presented can be obviously improved the packaging quality of product, therefore how change
The metal-like effect of kind package material surface is also more and more paid close attention to by research and development.
Metallic luster is a kind of gloss intensity, the gloss that the surface after referring to such as medal polish is reflected, as smooth
The gloss that is presented of metal smoothening surface.For compound package material especially paper base packaging material surface, the metal of presentation
Gloss refers to the picture and text of printing under the irradiation of visible light, can show distinctive metallic luster, form the effect of flash metal luster
Fruit increases the natural aesthetic feeling of packaging.Metal-like is not the material of metal, but has the gloss as metal.
In current paperbased packaging material field, realize that there are mainly two types of skills for the visible metal-like of appearance and metallic luster
Art: the first, is plastics aluminizer and cardboard to be combined into printing element, or directly printed using aluminized paper.Plastics
Aluminizer is in a kind of composite soft packaging material that Plastic film surface plates one layer of very thin metallic aluminium and is formed, general plastics plating
Aluminium film is to be process under vacuum conditions, extremely evaporates metallic aluminium heating melting by high temperature under high vacuum state, makes aluminium
Steam precipitation be stacked into Plastic film surface, thus make Plastic film surface have metallic luster, plastics aluminizer and cardboard
After being combined into printing element, common color printing is done by the side in film, then the side compound with outer layer PE (polyethylene) again
Formula, realizing has the packaging material appearance of mirror reflection effect consistent with metallic luster height, high；Second, be will have white painting
The cardboard and PE of layer are first compound, then successively type metal is black on the surface PE, common ink and coat (optional).
There is high specular reflectivity and flat and smooth approximate metal watch using the packaging external appearance that first way obtains
The luster effect in face.But aluminizer and aluminized paper itself higher cost, and cause the processing technology of packaging material to complicate, and make
The recycling and reusing of subsequent packaging material increases difficulty.Also, in filling apparatus, since the presence of aluminizer increases cutter portion
The abrasion and consumption of part, so that the service life of spare part is substantially reduced.Therefore this mode packaging material manufacturing cost and it is filling at
This is higher.
The second way using metallic ink in PE surface printing to by the way of realizing metallic luster effect, processing technology phase
To simple, color presents fuller, and metallic ink folds the metallic luster and feeling of high class that common color ink shows low-key.It is this
Method is the problem is that technically generally lead to VOC (volatile organic compound in workshop using the alcohol ink of high volatility
Object) content is higher, do not meet the requirement and development trend of environmental protection.Further, since being in PE surface printing, outer layer is not effective
Protective layer, being easier ink occurs to fall off causes to influence printing effect, while having biggish ink migration risk, to draw
Play foodsafety worry.
Liquid packaging material industry is at present largely using overlay film outside the direct flexographic printing in substrate and ink layer
Mode, it is compound by coating technique and PE progress in the outermost layer of paper base compound package material, paper base packing articles can be made to obtain
Rub resistance, humidity, waterproof and the functions such as anti-pollution, not only extend the service life of packing articles, also improve packaging print
The ornamental value of product.However, because the relationship of flexographic printing ink layer thickness and existing silver inks partial size, directly prints silver inks on paper base
Final effect have apparent gap compared with gravure and silk-screen effect, metal sense is not strong.Meanwhile outermost PE overlay film can also
Weaken the metal visual effect of existing metallic ink.To solve this problem, the applicant carries out technical research, and final target is
It is close to or up to the metal visual effect of existing similar gravure product on the market.
Summary of the invention
The main purpose of the present invention is to provide the packagings that visual metallic luster and metal-like is presented in a kind of appearance
Sheet material.
The present invention provides a kind of package sheet materials, are used to form independent packaging, and package sheet material has base, print from inside to outside
Brush layer and waterproof layer, which is characterized in that at least partly there is metal layer of ink, so that package sheet material appearance between base and printing layer
Visual metallic luster and/or metal-like is presented.
Preferred embodiment according to the present invention has prime coat layer, the table of prime coat layer between base and metal layer of ink
Surface roughness is lower than the absorbency of base lower than the surface roughness of base and/or the absorbency of prime coat layer.
Preferred embodiment according to the present invention, prime coat layer are resinous coat or PE coating.
Preferred embodiment according to the present invention, the quality proportioning of metallic pigments that the metallic ink of printing metal layer of ink uses for
10%~30%.
Preferred embodiment according to the present invention, metallic pigments are the metal powders of the laminated structure of silver dollar type.
Preferred embodiment according to the present invention, the partial size of metallic pigments are 5 μm~60 μm.
Preferred embodiment according to the present invention, printing layer are formed by printing, and the site of printing plate is at least partially below at number
100%, so that printing layer is higher than 100% site into several printing layers for the saturating of metal layer of ink for the degree of appearing of metal layer of ink
Out-degree.
Preferred embodiment according to the present invention, at least local site are lower than 90% at number.
Preferred embodiment according to the present invention, printing layer are formed by ink-jet, and ink droplet coverage rate is at least partially below 100%,
So that printing layer is higher than the degree of appearing of metal layer of ink printing layer the appearing for metal layer of ink of 100% ink droplet coverage rate
Degree.
Preferred embodiment according to the present invention, at least local ink droplet coverage rate are lower than 90%.
The printing of preferred embodiment according to the present invention, printing layer uses translucent printing ink.
Preferred embodiment according to the present invention, waterproof layer in printing layer, are drenched by lamination process combining for waterproof layer
The surface roughness Ra of the cooling cylinder of film is lower than 0.4.
Preferred embodiment according to the present invention, waterproof layer pass through lamination process combining in printing layer, the mist degree of waterproof layer
Less than 85%.
Compared with prior art, package sheet material surface is made to show stronger metal-like according to the technique and scheme of the present invention
And metallic luster, give richer visual experience, improve packaging printing ornamental value, while reduce manufacture and it is filling
Cost extends the service life of packing articles.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 show the cross-sectional view of the compound package material of one embodiment of the invention
Fig. 2 show the packaging material schematic diagram that printing layer is printed using the colored ink of different transparencies
Fig. 3 show packaging material schematic diagram of the printing layer using different sites at number printing
Fig. 4 show the cross-sectional view of the compound package material of another embodiment of the present invention
Fig. 5 show the waterproof layer packaging material schematic diagram compound using the cooling cylinder of different surface roughness
Fig. 6 show the manufacturing method flow chart of compound package material of the present invention
Fig. 7 show the schematic diagram of package sheet material of the invention
Fig. 8 show seal-packed schematic diagram of the invention
- 4 waterproof layer -5 of base's -3 printing layer of -2 metal layer of ink of -1 prime coat layer
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with drawings and the specific embodiments, to this
Invention is described in further detail.
In the following description, the reference of " one embodiment ", " embodiment ", " example ", " example " etc. is shown
The embodiment or example so described may include special characteristic, structure, characteristic, property, element or limit, but not each reality
Applying example or example all necessarily includes special characteristic, structure, characteristic, property, element or limit.In addition, reusing phrase " one
In a embodiment " although it is possible to be to refer to identical embodiment, but be not necessarily referring to identical embodiment.
For the sake of simplicity, some technical features known to those skilled in the art are omitted in being described below.
Embodiment 1
Fig. 1 show the cross-sectional view of the compound package material of one embodiment of the invention.Compound package material has
It is multiple to be used to form the unit individually packed, it from the inside to the outside successively include base 1, metal layer of ink 3, printing layer 4 and waterproof layer 5.
Base 1 is generally paper base.It can be coating paper jam, be also possible to PE overlay film cardboard.Those skilled in the art can
Understand, base 1 is not limited to paper base, can be any substrate for meeting the requirements such as packaging material mouldability and printing.For liquid
The compound package material of state food is inwardly usually also compounded with adhesive phase, aluminium foil layer, PE internal layer etc. by base 1.Composite packaging
Material generally at web-like, for the pouring in liquid food on aseptic filler and cuts into independent packaging.
Metal layer of ink 3 uses special metal ink print, to realize optimal metallic ink printing effect.
The size of particle is known as " partial size ", also known as " granularity " or " diameter ".Since the shape of practical particle is usually non-
It is spherical, it is difficult to directly indicate its size with diameter, therefore in testing graininess of granule field, to aspherical particle, usually with etc.
Partial size (general abbreviation partial size) is imitated to characterize the partial size of particle.When tested particle certain physical characteristic or physical behavio(u)r with it is a certain
When the homogenous spheres (or combination) of diameter are most close, just using the diameter of the sphere (or combination) as the equivalent grain size of tested particle
(or size distribution).Specifically, the granularity of spheric granules indicates referred to as " partial size " with his diameter, aspherical particle is not straight
Diameter can be sayed, just using its granularity of the conceptual description of " equivalent grain size ".Compared with common ink, the particle of metallic ink is thicker,
Partial size is usually 2-3 times of common pigments partial size.
Metallic ink refer to it is replacing the pigments or dyes in traditional ink to be formulated with tiny sheet metal, have it is only
The ink of special metal luminous effect, realizes metallic luster using the reflex of metal flake particles.Metallic ink mainly includes
Jin Mo and silver inks etc..Golden ink is generally formulated by copper pigment and zinc pigment in different ratios, by controlling and changing them
Proportion can produce the metals color inks such as green gold, green red gold, red gold, be in inaurate after printing.Golden ink can be by ink
Factory's production can also add bronze allotment to be made in printing station-service blending oil.The material of main part of Jin Mo is " gold " powder, but not
Refer to metallic gold, but a kind of copper alloy powder of gold.Copper powder contains micro reaction of Salmon-Saxl when link stuff is in acidity and wherein
It is easy to black；It also can slowly tarnish after printing with the sulphur effect in atmosphere, therefore golden ink can also be used aluminium powder and add dyestuff
Do pigment.Silver inks are generally formulated by aluminium pigment, and silvering is presented in ink marks after printing.Silver inks can be by ink manufactory system
Make, can also be prepared in printing with tune silver oil and silver paste.The material of main part of silver inks is " silver " powder, but does not imply that metallic silver,
But a kind of aluminum powder (aluminium powder) of silver color or aluminum thin slice (aluminium flake), high-pressure atomization system is generally passed through by molten aluminum liquid
At.The link stuff of metallic ink generally uses acid value and the extremely low resin of amine value, in order to avoid influence the gloss of ink, such as ethyl cellulose
Element, nitrocellulose, polyvinyl acetate, ketone resin, poly- phthalein polyimide resin, acrylic resin etc., and be added some wax materials with
Improve the suspended state of pigment.Metallic ink can also prepare solvent borne, but because of viscosity is small usually ready-to-use, the polarity of solvent
It is not required to too greatly, otherwise pigment can be easy precipitating because of excess humidity.Dimethylbenzene, isopropanol solvent etc. all can serve as metallic ink
Solvent.
The glittering effect of metallic ink is metallic pigments mirror-reflection and the coefficient result of diffusing reflection.It is more preferable in order to realize
Metal effect, it should improve the mirror-reflection of metallic pigments, reduce diffusing reflection.Metal pigment particle in conventional metals ink
Shape is irregular, referred to as cornflakes type (cornflake), since the shape of each metal pigment particle is random and edge
It is unsmooth, cause the mirror reflection effect of particle poor, edge diffusing reflection is serious, so the metallic luster and covering power of metallic ink
(covering power refers under specific coating layer thickness, can cover the pigment coated performance of substrate color difference) is corresponding also poor.Novel silver
Each particle of first type (silver dollar) metallic pigments is the structure of approximate disc, is had compared to cornflakes type
Shorter periphery, thus diffusing reflection is less, metal sense is stronger, mirror reflection effect is good, the ink metal effect that is produced with it and
Covering power is all very outstanding.
Illustrate technical solution of the present invention by taking silver inks as an example below.In general, the power and aluminium flake of the metal sense of silver inks
Particle size range, the structure of aluminium flake, the arrangement of aluminium flake etc. have relationship.It is required to adapt to the transferability of flexographic printing, aluminium in silver inks
The partial size of piece should not be too large, if partial size is big, the mirror reflection effect of single aluminium flake is preferable, and the metal luster of silver inks is higher,
Metal sense can enhance, but silver inks can be deteriorated to the metastatic of the covering power and silver inks of substrate from printing plate to substrate；If instead
The partial size of aluminium flake is too small, and silver inks are preferable to the covering power and dot reproduction of substrate, but due to there are excessive edge diffusing reflection,
It will lead to the metal luster decline of silver inks, metal sense can decline.In the silver inks of the special suitable printing of present embodiment
Mass ratio shared by aluminium flake is 10%~30%, other components of silver inks mainly include binder, filler and adjuvant etc..In
In one preferred embodiment, quality accounting of the aluminium flake in silver inks is 15%~25%.If using silver paste (by aluminium flake and solvent
The slurry modulated in advance is a kind of solidliquid mixture, and aluminium flake suspends in a solvent, and mobility is between a solid and a liquid)
It is printed with the mode of other inking agent extemporaneous preparation silver inks, mass ratio shared by aluminium flake is 30%~70% in silver paste, preferably
40%~60%, mass ratio shared by silver paste is 20%~70% in silver inks.In a preferred embodiment, silver paste quality accounting is
40%~50%, other inking agent may include acrylic acid varnish, water and other auxiliary agents etc..Silver inks or silver paste using 5 μm~
The silver powder of the laminated structure of the silver dollar type of 60 μm of small particles is made, it is preferred to use silver powder partial size be 8 μm~30 μm.Because of silver powder
It is not absolute uniform particle of the same size in other words, it is difficult to be characterized with the single particle size for representing individual particle size, institute
To be characterized using the average grain diameter for representing the population being made of different size of particle.Average grain diameter is size distribution curve
The equivalent diameter of the largest particles when middle cumulative distribution is 50%.It is molecular by the different grain of size and shape for one
Practical population, the hypothetical particle faciation ratio being made of with one uniform spheroidal particle, if the partial size overall length of the two is identical,
Then the diameter of this spheroidal particle is referred to as the average grain diameter of practical population.The silver paste uses at special multilayer coating structure and surface
Reason, the various aspects of performance such as metal sense, covering power, adhesive force, metastatic can achieve maximum balance.
It will be appreciated by those skilled in the art that metallic ink is not limited to silver inks, it can also be Jin Mo or other metallic inks.Metal
The quality proportioning and grain size specification for other sheet metals that pigment may be used in addition to aluminium flake, embodiment of the present invention are applicable in
Above-mentioned technical characteristic.Specifically, embodiment according to the present invention, in metallic ink mass ratio shared by sheet metal be 10%~
30%, it is preferable that quality accounting of the sheet metal in metallic ink is 15%~25%.Metallic pigments can selected from aluminium, copper,
Zinc, tin, iron, lead, titanium, stainless steel, alloy etc..
It, can be by using the anilox roll and adjustment plate surface of big inking amount in the printing technology of metal layer of ink 3
Can, increase printing ink transfer amount.
Printing layer 4 is printed on 3 top of metal layer of ink.Although printing layer 4 and 3 double exposure of metal layer of ink is shown schematically in the figure,
But it should be readily apparent to one skilled in the art that may not be overlapped in partial region, such as metallic ink according to package design demand
3 a part of overlying regions of layer do not have a part of overlying regions of printing layer 4 or base 1 not have metal layer of ink 3 and only printing layer
4.After the completion of printing layer 4 is printed, the complex waterproof layer 5 above printing layer 4, waterproof layer 5 can play the work of protection to printing layer 4
With preventing from destroying compound package material internal structure and printing effect.
Embodiment 2
It is illustrated in figure 2 the embodiment of the present invention 2, the printing layer 4 of compound package material can be using ink printing or ink-jet
It is formed, the transparency influence metal layer of ink 3 of ink or ink-jet appears effect, and transparency gets over the metal that high metal layer of ink 3 appears
Gloss is also stronger, and printing layer 4 uses translucent ink or translucent ink-jet, as the high colored ink of transparency is folded to improve
The metallic luster being patterned.Left side is packaging material of the printing layer 4 using the low ink printing of transparency in Fig. 2, is on the right side of Fig. 2
The packaging material that printing layer 4 is printed using the high ink of transparency.
Embodiment 3
It is illustrated in figure 3 the embodiment of the present invention 3, the packaging material in Fig. 3 is respectively adopted different sites and covers at several or ink droplet
Lid rate prints printing layer 4.Conventional printing process is the technology being transferred to picture and text using modes such as printing plates on stock.But
Be with science and technology progress, printing be not limited to contact printing, also cover be with electronic printing or digital printing
The contactless printing represented, contactless printing further further includes the variable printed of continuous printing different content.This
Printing layer 4 in invention is related to broadest printing concept, can also be printed by traditional printing mode, can also pass through example
As the digital printing mode of ink-jet is printed.
Site is that realize that printing can embody that space of a whole page level is not equal, color range thickens light (light and shade) boundary naturally substantially single
Position.It in press plays the role of determining printing color, level and image outline.Site size is the coverage rate by site
It determines, also referred to as Ink Transfer Percentage.The shades of the printing space of a whole page are showed by the size of site, the different net of size
Point is commonly called as " at " in technique.The so-called site percentage shared namely in unit area at number.If 1 one-tenth site is 10%,
2 become 20%, and others are analogized, and 100% is the space of a whole page on the spot.Site is denseer at the bigger printing space of a whole page mass colour of number, on the contrary then shallow.Net
The size of point area, determines the variation of space of a whole page level.
The degree that metal layer of ink 3 appears is influenced by the printing plate site of printing printing layer 4 at number, big by adjusting printing plate site
Different metallic luster effects may be implemented in small (or local site is at number).The site of 4 printing plate of printing layer is low at number at least part
The site of printing layer 4 above 100% namely metal layer of ink 3 is lower than 100% at number, so that printing layer 4 is for metal layer of ink
3 degree of appearing is higher than 100% site into several printing layers for the degree of appearing of metal layer of ink, and preferably at least local site is at several low
In 90%, the site the low at number, and the degree of appearing of metal layer of ink is higher.Packaging material shown on the left of Fig. 3 uses 80% site
Printing layer 4 is printed at number, packaging material shown in the right side Fig. 3 prints printing layer 4 at number using 60% site.It is preferred that using soft
India side formula, using more environmentally-friendly water-based ink, production efficiency is higher, and cost is lower.
The printing layer 4 of compound package material can also be formed by ink-jet, similar to the site in printing plate printing at number, ink-jet
Density can be characterized with ink droplet coverage rate, and the ink droplet coverage rate of ink-jet is at least partially below 100%, so that the printing layer of spray printing
4 are higher than the degree of appearing of metal layer of ink 3 degree of appearing of the printing layer for metal layer of ink of 100% ink droplet coverage rate, preferably extremely
Few part ink droplet coverage rate is lower than 90%.
Embodiment 4
Fig. 4 show the cross-sectional view of the compound package material of another embodiment of the present invention, unlike Fig. 1,
Before the printing of metal layer of ink 3, the position printing or coating prime coat layer 2, bottoming for first intending type metal layer of ink 3 in base 1 are applied
Area of the area of layer 2 not less than its top metallic ink layer 3.The property of paper can generate very big shadow to metallic ink printing quality
It rings, paper smoothness is higher, tightness is better, and the effect of type metal ink is better；On the contrary, the paper coarse in porous surface, quality
Upper printing is opened, effect will be poor.Since the printing of metal layer of ink 3 is higher to the performance requirement of printing paper, it is desirable that paper
With high smoothness, smooth paper surface is small for the absorbability of ink, can be avoided the link stuff in ink by paper mistake
Degree absorbs, and so that the metallic pigments in ink is floated on the surface, causes to adhere insecure, or even fall off.Add after applying prime coat layer 2, beats
The surface roughness of priming coat 2 is lower than the surface roughness of base 1, and surface roughness is higher to mean that surface is more coarse, adds painting
Prime coat layer 2 can significantly improve the smoothness at quasi- 3 position of type metal layer of ink, and the absorbency for reducing by 1 surface of base is (also referred to as oily
Black absorbability refers to the ability that surface to be printed imprints moment reception and transfer ink on the printer), it promotes metal layer of ink 3 and prints
The firmness of brush.The glossiness that the position can also be promoted using prime coat layer makes the color of the metal layer of ink 3 of printing more
It is distinct, beautiful.The prime coat layer 2 used in the present invention is resinous coat or PE coating.In a preferred embodiment, prime coat layer 2
Using water-based gloss oil or diluent.
Embodiment 5
By lamination (it is compound also referred to as to squeeze out curtain coating), in printing layer 4, waterproof layer 5 can be improved process combining waterproof layer 5
The rub resistance and waterproof performance of compound package material, by adjusting the physical property of waterproof layer 5, additionally it is possible to make compound package material
Appearance shows different visual effects.
Fig. 5 show waterproof layer 5 and carries out compound packaging material schematic diagram using the cooling cylinder of different surface roughness.Surface
Roughness refers to the unevenness of the smaller spacing that finished surface has and small peak valley.The distance between its two wave crest or two troughs
(pitch of waves) very little (in 1mm or less), it belongs to microcosmos geometric shape error.Surface roughness is smaller, then surface is more smooth.Generally
Mark uses Ra (profile arithmetic average error or center line average value): in the calculation of sample length (lr) Internal periphery offset distance absolute value
Art average value.Cooling cylinder used in combination process (also referred to as curtain coating chill roll or sharp cooling roll) cool down subtracting to lamination is squeezed out
Deformation caused by shrinking when few fused films cooling, the surface roughness of cooling cylinder will affect the gloss on overlay film surface.
The surface property of waterproof layer 5 influences the visual effect of packaging material.The surface of waterproof layer 5 is more smooth, packaging material
The metal sense of presentation is more obvious.Waterproof layer 5 is generally thermoplastic resin, preferably polyolefin, and including but not limited to low-density is poly-
The mixture of ethylene (LDPE), metallocene PE (m-PE) or the two.Waterproof layer 5 is in the molten state by cooling cylinder to drench
Film mode is compounded in 4 top of printing layer, and with the roughness on Ra characterization cooling cylinder surface, Ra numerical value is lower, then cooling cylinder surface is more smooth,
The light effect that waterproof layer 5 is presented after compound is more obvious.Surface of the present embodiment selection for the cooling cylinder of 5 lamination of waterproof layer is thick
Rugosity Ra is lower than 0.4.
In Fig. 5 upper figure be use surface roughness Ra for 0.4 cooling cylinder complex waterproof layer 5 packaging material schematic diagram, under
Figure be use surface roughness Ra for 0.2 cooling cylinder complex waterproof layer 5 packaging material schematic diagram.
Furthermore it is preferred that the PE high using transparency, mist degree is low weakens PE and bears to surface metal gloss as waterproof layer 5
Face is rung.Mist degree is the percentage for deviateing the transmitted light conversion total transmission light intensity at 2.5 ° of angles of incident light or more, the bigger meaning of mist degree
Film gloss and transparency especially imaging degree decline.The one of standard " C " light source as defined in International Commission on Illumination (CIE)
On beam directional light vertical irradiation to film, since material internal and surface cause to scatter, part directional light is made to deviate incident direction
Percentage, that is, mist degree of the ratio between the luminous flux T2 of scatter light flux Td and permeable material greater than 2.5 °, it is that materials optical is transparent
The important parameter of property.For this field usually quantification of 10~20g/m2Waterproof layer 5 for, with commonly be based on U.S. material
The mist degree of the mist degree instrument measurement waterproof layer 5 of association (ASTM) the D1003 standard of test is less than 85%, and preferably less than 80%.In addition,
It is greater than with the light transmittance (through the percentage of the luminous flux and its incident flux of PE film) that such mist degree instrument measures waterproof layer 5
10%, preferably more than 20%.
Embodiment 6
Fig. 6 show the manufacturing method of compound package material of the present invention, and compound package material includes base 1,4 and of printing layer
Waterproof layer 5, at least partly has metal layer of ink 3 between base 1 and printing layer 4, and the manufacturing method of compound package material includes
Following steps:
Step 1) uses metallic ink type metal layer of ink 3 above base 1；
Step 2) prints printing layer 4 above metal layer of ink 3；
Step 3) complex waterproof layer 5 above printing layer 4.
Before step 1), preferably first it can also print in base 1 or coat prime coat layer 2, then be applied again in bottoming
2 top type metal layer of ink 3 of layer, the area of prime coat layer 2 are not less than the area of its top metallic ink layer 3.The table of prime coat layer 2
Surface roughness is preferably lower than the surface roughness of base 1, and prime coat layer 2 can be resinous coat or PE coating.Add painting bottoming
Coating 2 can significantly improve the smoothness at quasi- 3 position of type metal layer of ink, reduce the absorbency on 1 surface of base, promote metallic ink
The firmness of 3 printing of layer, and keep the color of the metal layer of ink 3 of printing distincter, beautiful.
The quality proportioning for the metallic pigments that the metallic ink of printing metal layer of ink 3 uses in step 1) is preferably 10%~
30%.Metallic pigments can be the metal powder of the laminated structure of silver dollar type.The particle size range of metallic pigments is preferably 5 μm~60 μ
M, more preferably 8 μm~30 μm.
In step 2), printing layer 4 can be printed using ink, and at least the site on the local printing plate of printing layer 4 is lower than at number
100%, so that it is 100% site into several degree of appearing that printing layer 4, which is higher than printing plate for the degree of appearing of metal layer of ink 3, preferably extremely
Site on few part printing plate is lower than 90% at number.Printing layer 4 can also be formed by the way of ink-jet, and ink droplet coverage rate is at least
Be partially below 100% so that printing layer 4 for metal layer of ink 3 degree of appearing be higher than 100% ink droplet coverage rate printing layer for
The degree of appearing of metal layer of ink, preferably at least local ink droplet coverage rate are lower than 90%.Printing layer 4 is it is also an option that using translucent
Ink or ink-jet.
In step 3), by the outermost layer of lamination process combining to packaging material, waterproof layer material melt drenches to exist waterproof layer 5
4 surface of printing layer, and via cooling cylinder by compound to the top of printing layer 4, therefore the roughness on cooling cylinder surface directly affects waterproof layer 5
Surface roughness, it is cold employed in manufacture by the luster effect on the surface roughness Ra adjusting packaging material surface of adjusting cooling cylinder
Cylinder surfaces roughness Ra is lower than 0.4.The mist degree of waterproof layer 5 is preferably smaller than 85%.
Embodiment 7
Fig. 7 show the package sheet material with metal layer of ink 3, and letter A show metal layer of ink 3 on package sheet material in Fig. 7
Region.Package sheet material can be cut by compound package material.The technical characteristic of package sheet material and previous embodiment phase
Together, the difference is that package sheet material is not at web-like, but it is used to form the individual unit individually packed.It is not repeated to retouch herein
It states.
Embodiment 8
Fig. 8 show the sealed package with metal layer of ink 3, and letter A show metal layer of ink 3 in sealed package in Fig. 8
Region.Sealed package generally encapsulates liquid form product, can be by the filling rear cutting of compound package material, can also be by package panel
Material is individually filling.Seal-packed technical characteristic is identical as previous embodiment, is not repeated to describe herein.Metal layer of ink 3 can be with
It is all surfaces entirely packed, is also possible to its part of the surface, such as front, the back side or side or part of it region.
The above description is only an embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.
Claims (13)
1. a kind of package sheet material, is used to form independent packaging, the package sheet material has base, printing layer and waterproof from inside to outside
Layer, which is characterized in that at least partly there is metal layer of ink, so that outside the package sheet material between the base and the printing layer
It sees and visual metallic luster and/or metal-like is presented.
2. package sheet material according to claim 1, which is characterized in that have between the base and the metal layer of ink
Prime coat layer, the surface roughness of the surface roughness of the prime coat layer lower than the base and/or the prime coat layer
Absorbency is lower than the absorbency of the base.
3. package sheet material according to claim 2, which is characterized in that the prime coat layer is resinous coat or PE coating.
4. package sheet material according to claim 1, which is characterized in that print the gold that the metallic ink of the metal layer of ink uses
The quality proportioning for belonging to pigment is 10%~30%.
5. package sheet material according to claim 4, which is characterized in that the metallic pigments are the laminated structures of silver dollar type
Metal powder.
6. package sheet material according to claim 4 or 5, which is characterized in that the partial size of the metallic pigments is 5 μm~60 μ
m。
7. package sheet material according to claim 1, which is characterized in that the printing layer is formed by printing, the site of printing plate
It is at least partially below 100% at number, so that the printing layer is higher than 100% site into number for the degree of appearing of the metal layer of ink
Printing layer for the metal layer of ink degree of appearing.
8. package sheet material according to claim 7, which is characterized in that at least local site is lower than 90% at number.
9. package sheet material according to claim 1, which is characterized in that the printing layer is formed by ink-jet, ink droplet coverage rate
It is at least partially below 100%, so that the printing layer is higher than 100% ink droplet coverage rate for the degree of appearing of the metal layer of ink
Degree of appearing of the printing layer for the metal layer of ink.
10. package sheet material according to claim 9, which is characterized in that at least local ink droplet coverage rate is lower than 90%.
11. package sheet material according to claim 1, which is characterized in that the printing of the printing layer uses translucent printing ink.
12. package sheet material according to claim 1, which is characterized in that the waterproof layer is by lamination process combining in institute
It states in printing layer, the surface roughness Ra of the cooling cylinder for the waterproof layer lamination is lower than 0.4.
13. package sheet material according to claim 1, which is characterized in that the waterproof layer is by lamination process combining in institute
It states in printing layer, the mist degree of the waterproof layer is less than 85%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497657.1A CN110510254A (en) | 2018-05-22 | 2018-05-22 | Package sheet material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497657.1A CN110510254A (en) | 2018-05-22 | 2018-05-22 | Package sheet material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110510254A true CN110510254A (en) | 2019-11-29 |
Family
ID=68622284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810497657.1A Pending CN110510254A (en) | 2018-05-22 | 2018-05-22 | Package sheet material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110510254A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110978839A (en) * | 2019-12-03 | 2020-04-10 | 佛山市长盛兴隆装饰材料有限公司 | Waterproof and antifouling thermal transfer paper, preparation method and printing stock |
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