CN106079791A - Composite membrane printing variable code and preparation method thereof in a kind of location - Google Patents
Composite membrane printing variable code and preparation method thereof in a kind of location Download PDFInfo
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- CN106079791A CN106079791A CN201610654347.7A CN201610654347A CN106079791A CN 106079791 A CN106079791 A CN 106079791A CN 201610654347 A CN201610654347 A CN 201610654347A CN 106079791 A CN106079791 A CN 106079791A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/088—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyamides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
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Abstract
The invention provides composite membrane printing variable code and preparation method thereof in a kind of location, after the method includes printing layer first carrying out sided corona treatment and printing curing ink, again printing layer is carried out corona Processing for removing, the most sequentially spray printing variable code, compound thermal sealing, can be prepared by composite membrane after maturation process.The preparation method of the present invention is by carrying out sided corona treatment to printing layer before forming patterned layer, improve the printing layer adhesive force to liposoluble type gravure printing ink, then before forming false proof layer, again printing layer is carried out corona Processing for removing, not only reduce the surface tension of printing layer, enhance the printing layer adhesive force to UV ink, the static content that printing layer material is increased can also be shifted because of sided corona treatment simultaneously, and then efficiently solve the prior art security code that directly printing anti-counterfeit code is caused in ink design layer the most ambiguous defect of electrostatic burr occurs, enhance the using effect of security code dramatically.
Description
Technical field
The present invention relates to packing technique field, particularly relate to print in a kind of location composite membrane and the preparation side thereof of variable code
Method.
Background technology
Packaging bag, as the protective of content, is played and is taken up article, seals article and the effect of marking articles.Wherein,
The function of marking articles mainly shows themselves in that the design on packaging bag surface, pouch-shaped style and identification code, and identification code can be literary composition
Word, figure, image, bar code, Quick Response Code, product production line number etc..As a example by Biscuit Wrapping Bag, conventional Biscuit Wrapping Bag is adopted
Be Biaxially oriented polypropylene (BOPP) film and the two layer composite structure of cast polypropylene (CPP) film, wherein internal layer CPP is main
Playing heat-sealing effect, outer layer BOPP plays offer intensity and the effect as ink printing base material.Above-mentioned composite film packaging bag
Use producer can only carry out in side exposed for BOPP or CPP printing coding, owing to identification code being printed on the interior table of composite membrane
Contacting of identification code and content is inevitably caused in face, thus food safety is produced potential impact, is therefore typically
Identification code is printed on the outer surface of composite membrane, but this mode of printing still there is problems in that first, be unsuitable for printing and contain
Sales promotion, preferential etc. is not intended to the visible identification code of consumer, and second, for variable one-dimension code or Quick Response Code, prior art
Directly cannot be printed in composite membrane flexible package, and variable code can only be imprinted on label, then label be pasted in packaging
On bag, which not only adds packing cost, it is often more important that label is the most artificially torn or destroys.
For solving the drawbacks described above that prior art exists, Chinese patent literature CN105014999A discloses a kind of spray printing to be had
The production technology of the composite film packaging bag of security code, this technique comprises the steps: S1, by feedstock nylon thin film back face printing
The pattern that designs in advance, decorative pattern, word etc.；Security code on S2, the nylon film reverse side fixed position spray printing that will print, anti-
Pseudo-code has uniqueness；S3, linear low density polyethylene is blow molded into PE film, and under the nylon film of the good security code of spray printing
Side is by compound this PE film upper of glue thus forms composite membrane；S4, composite membrane is placed in ripening 20～48h at 40～60 DEG C；S5、
By ink jet numbering machine, false proof figure layer on the composite membrane front spray printing at security code position on composite membrane, the figure layer of spray printing are used
Ultraviolet photo-curing UV scrapes silver ink；S6, the compound film slitting completing S5 is fabricated to independent packaging bag.Above-mentioned technique is led to
Cross by security code spray printing inside the outer layer of composite film packaging bag, can effectively prevent security code by artificial destruction, but due to false proof
The jet printing process of code is a process that ink design layer is charged ink-jet, and this will make ink design layer with certain electricity
Amount, then above-mentioned technology is direct printing anti-counterfeit code in this ink design layer, then security code will certainly be caused electrostatic burr occur
The most ambiguous phenomenon, thus affect the using effect of security code.It addition, above-mentioned technology prepare composite film packaging bag in
Inner layer PE film prepared by linear low density polyethylene, cause bag because it has higher softening temperature and melt temperature
The low temperature heat seal of pack internal layer is undesirable.
In sum, how the existing composite film packaging bag including security code and production technology thereof are improved, with
Overcoming the defect that the low temperature heat seal smudgy, packaging bag internal layer of the security code in current composite film packaging bag is poor, this is right
A technical barrier the most unsolved is remained for those skilled in the art.
Summary of the invention
Present invention solves the technical problem that and be to overcome preventing existing for the existing composite film packaging bag including security code
Pseudo-code is smudgy, the defect of the low temperature heat seal of packaging bag internal layer difference, so provide that a kind of security code is clear, hot sealing layer low
Composite membrane printing variable code and preparation method thereof in the temperature location that heat sealability is good and contamination resistance is strong.
To this end, the technical scheme that the present invention realizes above-mentioned purpose is:
Print the preparation method of the composite membrane of variable code in a kind of location, comprise the steps:
S1, with aluminum as electrolyte and the surface of printing layer is carried out at corona by the electrode that uses power to be 2.5～7.0KW
Reason；
S2, on a surface of the printing layer after sided corona treatment printing-ink, formed patterned layer；
S3, it is 35-60 DEG C and humidity is the printing layer completing step S2 to be carried out electricity under conditions of 50～70% in temperature
Dizzy Processing for removing；
S4, in the patterned layer after corona Processing for removing spray printing variable code, formed false proof layer；
S5, in described false proof layer compound thermal sealing, and through maturation process, can be prepared by described composite membrane.
Described printing layer is BOPET film or BOPP film.
Described hot sealing layer is PE film, CPP film or EVA film, or described hot sealing layer be the LDPE by 20～40wt%, 10～
The mPE of 1-the octene copolymer LLDPE, 20～30wt% of 1-butylene the copolymerization LLDPE, 10～30wt% of 30wt% is blow molded after being blended
Thin film.
Step S2 uses intaglio press printing-ink, and to control print speed printing speed be 100～220m/min, and baking temperature is
40～80 DEG C.
Also include that first printing chalk in step S5 in described false proof layer forms chalk layer, more compound on described chalk layer
Described hot sealing layer；
The formation speed of described chalk layer is 100～220m/min, and baking temperature is 40～80 DEG C.
Also include step S5 is first combined in described false proof layer or chalk layer barrier layer, more compound on described barrier layer
Described hot sealing layer；
Described barrier layer is aluminium foil or VM-PET film.
Also include first composite strengthening layer on described false proof layer, chalk layer or barrier layer in step S5, then in described enhancing
Compound described hot sealing layer on layer；
Described enhancement layer is BOPA film or BOPET film.
Step S5 uses compounding machine to realize described recombination process, controls recombination velocity≤180m/min, compounding machine one district
Temperature is 50～75 DEG C, the temperature in compounding machine two district is 60～80 DEG C, the temperature in compounding machine three district is 70～90 DEG C, tympanites due to heat temperature
It it is 50～70 DEG C.
Curing temperature in step S5 is 40～50 DEG C, time >=48h.
The composite membrane of variable code is printed in a kind of location prepared by above-mentioned preparation method.
In the inventive solutions, BOPET film refers to biaxial stretching polyester film, and BOPP film refers to biaxial stretching polypropylene
Alkene film, PE film refers to that polyethylene film, CPP film refer to cast polypropylene film, and EVA film refers to polyethylene-polyvinyl acetate copolymerization
Thing film, VM-PET film refers to that polyethylene terephthalate film of aluminizing, BOPA film refer to biaxial tension nylon film, and LDPE refers to
It is that Low Density Polyethylene, 1-butylene copolymerization LLDPE refer to the linear low density polyethylene by 1-butylene copolymerization, 1-octene
Copolymerization LLDPE refers to the linear low density polyethylene by 1-octene copolymer, mPE refers to metallocene PE.
The technique scheme of the present invention has the advantage that
1, print the preparation method of the composite membrane of variable code in location of the present invention, fully take into account for forming pattern
The liposoluble type gravure printing ink of layer, with for forming the UV ink of false proof layer owing to becoming the difference being grouped into, causes above-mentioned two
The surface tension planting ink also differs, and the surface tension of the surface tension of ink and printing layer adapts and is to ensure that printing quality
Measured essential condition, therefore, present invention firstly provides and be both needed to printing layer is carried out spy before forming patterned layer and false proof layer
Different process, that is to say, initially with aluminum as electrolyte and to printing layer one of electrode that uses power to be 2.5～7.0KW
Surface carries out sided corona treatment so that the hydrocarbon chain on printing layer surface and the fracture of carbon carbochain, and then with oxygen at High Temperature High Pressure electric current
Effect under react generation hydroxyl isopolarity group, to increase the surface tension of printing layer, thus promote printing layer to fat
The adhesive force of molten type gravure printing ink is to define patterned layer on printing layer；But the most therefore make to be printed with patterned layer
The surface tension of printing layer is excessive and is unsuitable for direct spray printing UV ink, so the present invention is 35-60 in temperature the most again
DEG C and humidity be that printing layer is carried out under conditions of 50～70% corona Processing for removing, on the one hand can aggravate the height in printing layer
Polymers strand rotate freely activity so that active group by printing layer material interior shifting to its surface to neutralize printing layer
The high polymer polar molecule on surface, reaches unpolarized purpose, thus reduces the surface tension of printing layer, enhance printing layer
To the adhesive force of UV ink to form false proof layer further；On the other hand printing layer is also made can to fully absorb the water in air
Vapour molecule, thus reduce the surface tension of printing layer material as much as possible, to reach more preferable depolarization purpose, and make to hold
Print layer reaches optimal to the printing performance of UV ink；The third aspect can also shift printing layer material because of sided corona treatment increased quiet
Electricity, and then efficiently solve the prior art security code that directly printing anti-counterfeit code is caused in ink design layer electrostatic occurs
The most ambiguous defect of burr, enhances the using effect of security code dramatically.
2, the preparation method of the composite membrane of variable code is printed in location of the present invention, by optimizing hot sealing layer further
Material prescription, i.e. uses the 1-of 1-butylene the copolymerization LLDPE, 10～30wt% of the LDPE by 20～40wt%, 10～30wt%
The thin film that the mPE of octene copolymer LLDPE, 20～30wt% is blow molded after being blended is as hot sealing layer so that the present invention prepares
Hot sealing layer in composite membrane has good processing characteristics, deflection, toughness, low temperature heat seal and contamination resistance, because of
The composite membrane of this present invention is highly suitable for the flexible package of food, beverage and medicine.
3, the preparation method of the composite membrane of variable code is printed in location of the present invention, by first at false proof layer or chalk layer
Upper compound barrier layer, then compound thermal sealing on this barrier layer, in order to above-mentioned barrier layer in composite film packaging bag external environment
Steam and the iris action of oxygen etc., reach the purpose of product quality in preferably protective packaging bag.
It addition, preparation method of the present invention is by first composite strengthening layer on false proof layer, chalk layer or barrier layer, then
Compound thermal sealing on this enhancement layer, thus utilize the above-mentioned enhancement layer intensity increasing action to composite film packaging bag, reach more
Guarantee well the purpose of packaging bag integrity.
Detailed description of the invention
Technical scheme will be clearly and completely described below, it is clear that described embodiment is this
Bright a part of embodiment rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
Have and make the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.Additionally, below
Just can be mutual as long as technical characteristic involved in described difference embodiment of the present invention does not constitutes conflict each other
In conjunction with.
Embodiment 1
The composite membrane printing variable code in location described in the present embodiment include being sequentially connected with the BOPET layer of setting, patterned layer,
False proof layer and EVA layer；
The preparation method of above-mentioned composite membrane comprises the steps:
S1, use with aluminum as electrolyte, the corona machine of 2.5KW electrode the surface of BOPET film is carried out sided corona treatment, electricity
Dizzy speed is 110m/min；
S2, intaglio press is utilized to print liposoluble type ink on a surface of the BOPET film after sided corona treatment,
Control print speed printing speed is 220m/min, baking temperature is 60 DEG C, thus forms patterned layer in BOPET film；
S3, temperature be 35 DEG C and humidity be the BOPET film completing step S2 is carried out under conditions of 60% for time 24h
Corona Processing for removing；
S4, at the specified location spray printing UV ink of the patterned layer after corona Processing for removing, thus shape in patterned layer
Become variable code false proof layer；
Described false proof layer is combined by S5, employing dry compound machine with eva film, and control recombination velocity is 180m/min, multiple
The temperature in He Ji mono-district is 50 DEG C, the temperature in compounding machine two district is 60 DEG C, the temperature in compounding machine three district is 70 DEG C, and tympanites due to heat temperature is
50℃；Material after being combined again is placed in curing chamber, and controlling curing temperature is 40 DEG C, and the time is 48h, can be prepared by described multiple
Close film.
Embodiment 2
The composite membrane printing variable code in location described in the present embodiment include being sequentially connected with the BOPP layer of setting, patterned layer,
False proof layer, chalk layer and PE layer；
The preparation method of above-mentioned composite membrane comprises the steps:
S1, use with aluminum as electrolyte, the corona machine of 7KW electrode the surface of BOPP thin film is carried out sided corona treatment, corona
Speed be 20m/min；
S2, intaglio press is utilized to print liposoluble type ink on a surface of the BOPP thin film after sided corona treatment,
Control print speed printing speed is 155m/min, baking temperature is 40 DEG C, thus forms patterned layer on BOPP thin film；
S3, temperature be 47.5 DEG C and humidity be the BOPP thin film completing step S2 is carried out under conditions of 50% for time
The corona Processing for removing of 12h；
S4, at the specified location spray printing UV ink of the patterned layer after corona Processing for removing, thus shape in patterned layer
Become variable code false proof layer；
S5, recycling intaglio press prints chalk in described false proof layer, and to control print speed printing speed be 100m/min, do
Dry temperature is 60 DEG C, thus forms chalk layer in false proof layer；
Using dry compound machine by described chalk layer and PE Film laminated, control recombination velocity is 170m/min, compounding machine
The temperature in one district is 60 DEG C, the temperature in compounding machine two district is 70 DEG C, the temperature in compounding machine three district is 80 DEG C, and tympanites due to heat temperature is 70
℃；Material after being combined again is placed in curing chamber, and controlling curing temperature is 50 DEG C, and the time is 50h, can be prepared by described compound
Film.
Embodiment 3
The composite membrane printing variable code in location described in the present embodiment include being sequentially connected with the BOPET layer of setting, patterned layer,
False proof layer, chalk layer, Al layer and CPP layer；
The preparation method of above-mentioned composite membrane comprises the steps:
S1, use with aluminum as electrolyte, the corona machine of 4.75W electrode the surface of BOPET film is carried out sided corona treatment, electricity
Dizzy speed is 200m/min；
S2, intaglio press is utilized to print liposoluble type ink on a surface of the BOPET film after sided corona treatment,
Control print speed printing speed is 100m/min, baking temperature is 50 DEG C, thus forms patterned layer in BOPET film；
S3, temperature be 60 DEG C and humidity be the BOPET film completing step S2 is carried out under conditions of 60% for time 18h
Corona Processing for removing；
S4, at the specified location spray printing UV ink of the patterned layer after corona Processing for removing, thus shape in patterned layer
Become variable code false proof layer；
S5, recycling intaglio press prints chalk in described false proof layer, and to control print speed printing speed be 220m/min, do
Dry temperature is 80 DEG C, thus forms chalk layer in false proof layer；
Using dry compound machine to be combined with aluminium foil by described chalk layer, control recombination velocity is 175m/min, compounding machine one
The temperature in district is 75 DEG C, the temperature in compounding machine two district is 80 DEG C, the temperature in compounding machine three district is 90 DEG C, and tympanites due to heat temperature is 60 DEG C,
Thus on described chalk layer, form Al layer；
The most again will be with Al layer and CPP Film laminated, control recombination velocity is 180m/min, and the temperature in compounding machine one district is
60 DEG C, the temperature in compounding machine two district be 70 DEG C, the temperature in compounding machine three district be 80 DEG C, tympanites due to heat temperature is 70 DEG C；
Material after being finally combined is placed in curing chamber, and controlling curing temperature is 50 DEG C, and the time is 50h, can be prepared by
Described composite membrane.
Embodiment 4
The composite membrane printing variable code in location described in the present embodiment include being sequentially connected with the BOPP layer of setting, patterned layer,
False proof layer, chalk layer, Al layer, BOPA layer and EVA layer；
The preparation method of above-mentioned composite membrane comprises the steps:
S1, use with aluminum as electrolyte, the corona machine of 4KW electrode the surface of BOPP thin film is carried out sided corona treatment, corona
Speed be 150m/min；
S2, intaglio press is utilized to print liposoluble type ink on a surface of the BOPP thin film after sided corona treatment,
Control print speed printing speed is 180m/min, baking temperature is 80 DEG C, thus forms patterned layer on BOPP thin film；
S3, temperature be 55 DEG C and humidity be the BOPP thin film completing step S2 is carried out under conditions of 70% for time 15h
Corona Processing for removing；
S4, at the specified location spray printing UV ink of the patterned layer after corona Processing for removing, thus shape in patterned layer
Become variable code false proof layer；
S5, recycling intaglio press prints chalk in described false proof layer, and to control print speed printing speed be 155m/min, do
Dry temperature is 60 DEG C, thus forms chalk layer in false proof layer；
Using dry compound machine to be combined with aluminium foil by described chalk layer, control recombination velocity is 170m/min, compounding machine one
The temperature in district is 70 DEG C, the temperature in compounding machine two district is 75 DEG C, the temperature in compounding machine three district is 80 DEG C, and tympanites due to heat temperature is 55 DEG C,
Thus on described chalk layer, form Al layer；
Again will be with Al layer and BOPA Film laminated, control recombination velocity is 170m/min, and the temperature in compounding machine one district is 55
DEG C, the temperature in compounding machine two district be 60 DEG C, the temperature in compounding machine three district be 70 DEG C, tympanites due to heat temperature is 60 DEG C, thus at described Al
BOPA layer is formed on layer；
Then will be combined with eva film with BOPA layer, control recombination velocity is 175m/min, and the temperature in compounding machine one district is
60 DEG C, the temperature in compounding machine two district be 70 DEG C, the temperature in compounding machine three district be 80 DEG C, tympanites due to heat temperature is 60 DEG C, thus described
EVA layer is formed on BOPA layer；
Material after being finally combined is placed in curing chamber, and controlling curing temperature is 45 DEG C, and the time is 53h, can be prepared by
Described composite membrane.
Embodiment 5
The composite membrane printing variable code in location described in the present embodiment include being sequentially connected with the BOPP layer of setting, patterned layer,
False proof layer, chalk layer, Al layer, BOPA layer and hot sealing layer；
The preparation method of above-mentioned composite membrane comprises the steps:
S1, use with aluminum as electrolyte, the corona machine of 6KW electrode the surface of BOPP thin film is carried out sided corona treatment, corona
Speed be 180m/min；
S2, intaglio press is utilized to print liposoluble type ink on a surface of the BOPP thin film after sided corona treatment,
Control print speed printing speed is 180m/min, baking temperature is 80 DEG C, thus forms patterned layer on BOPP thin film；
S3, temperature be 40 DEG C and humidity be the BOPP thin film completing step S2 is carried out under conditions of 50～70% for time
The corona Processing for removing of 21h；
S4, at the specified location spray printing UV ink of the patterned layer after corona Processing for removing, thus shape in patterned layer
Become variable code false proof layer；
S5, recycling intaglio press prints chalk in described false proof layer, and to control print speed printing speed be 155m/min, do
Dry temperature is 60 DEG C, thus forms chalk layer in false proof layer；
Using dry compound machine to be combined with aluminium foil by described chalk layer, control recombination velocity is 170m/min, compounding machine one
The temperature in district is 70 DEG C, the temperature in compounding machine two district is 75 DEG C, the temperature in compounding machine three district is 80 DEG C, and tympanites due to heat temperature is 55 DEG C,
Thus on described chalk layer, form Al layer；
Again will be with Al layer and BOPA Film laminated, control recombination velocity is 170m/min, and the temperature in compounding machine one district is 55
DEG C, the temperature in compounding machine two district be 60 DEG C, the temperature in compounding machine three district be 70 DEG C, tympanites due to heat temperature is 60 DEG C, thus at described Al
BOPA layer is formed on layer；
Then will be combined with heat sealing film with BOPA layer, control recombination velocity is 175m/min, the temperature in compounding machine one district
Be 60 DEG C, the temperature in compounding machine two district be 70 DEG C, the temperature in compounding machine three district be 80 DEG C, tympanites due to heat temperature is 60 DEG C, thus in institute
State and form hot sealing layer on BOPA layer；Wherein, described heat sealing film is by the 1-butylene copolymerization of LDPE, 10wt% of 40wt%
The thin film that the mPE of 1-octene copolymer LLDPE, 30wt% of LLDPE, 20wt% is blow molded after being blended；
Material after being finally combined is placed in curing chamber, and controlling curing temperature is 45 DEG C, and the time is 53h, can be prepared by
Described composite membrane.
Embodiment 6
The composite membrane printing variable code in location described in the present embodiment include being sequentially connected with the BOPET layer of setting, patterned layer,
False proof layer, chalk layer, Al layer and PE layer；
The preparation method of above-mentioned composite membrane comprises the steps:
S1, use with aluminum as electrolyte, the corona machine of 6KW electrode the surface of BOPET film is carried out sided corona treatment, corona
Speed be 60m/min；
S2, intaglio press is utilized to print liposoluble type ink on a surface of the BOPET film after sided corona treatment,
Control print speed printing speed is 180m/min, baking temperature is 60 DEG C, thus forms patterned layer in BOPET film；
S3, temperature be 40 DEG C and humidity be the BOPET film completing step S2 is carried out under conditions of 58% for time 20h
Corona Processing for removing；
S4, at the specified location spray printing UV ink of the patterned layer after corona Processing for removing, thus shape in patterned layer
Become variable code false proof layer；
S5, recycling intaglio press prints chalk in described false proof layer, and to control print speed printing speed be 160m/min, do
Dry temperature is 70 DEG C, thus forms chalk layer in false proof layer；
Using dry compound machine to be combined with aluminium foil by described chalk layer, control recombination velocity is 170m/min, compounding machine one
The temperature in district is 60 DEG C, the temperature in compounding machine two district is 70 DEG C, the temperature in compounding machine three district is 80 DEG C, and tympanites due to heat temperature is 60 DEG C,
Thus on described chalk layer, form Al layer；
The most again will be with Al layer and PE Film laminated, control recombination velocity is 180m/min, and the temperature in compounding machine one district is
60 DEG C, the temperature in compounding machine two district be 70 DEG C, the temperature in compounding machine three district be 80 DEG C, tympanites due to heat temperature is 70 DEG C；
Material after being finally combined is placed in curing chamber, and controlling curing temperature is 40 DEG C, and the time is 50h, can be prepared by
Described composite membrane.
Embodiment 7
The composite membrane printing variable code in location described in the present embodiment include being sequentially connected with the BOPET layer of setting, patterned layer,
False proof layer, chalk layer, Al layer and EVA layer；
The preparation method of above-mentioned composite membrane comprises the steps:
S1, use with aluminum as electrolyte, the corona machine of 3.5KW electrode the surface of BOPET film is carried out sided corona treatment, electricity
Dizzy speed is 80m/min；
S2, intaglio press is utilized to print liposoluble type ink on a surface of the BOPET film after sided corona treatment,
Control print speed printing speed is 130m/min, baking temperature is 70 DEG C, thus forms patterned layer in BOPET film；
S3, temperature be 45 DEG C and humidity be the BOPET film completing step S2 is carried out under conditions of 55% for time 15h
Corona Processing for removing；
S4, at the specified location spray printing UV ink of the patterned layer after corona Processing for removing, thus shape in patterned layer
Become variable code false proof layer；
S5, recycling intaglio press prints chalk in described false proof layer, and to control print speed printing speed be 160m/min, do
Dry temperature is 70 DEG C, thus forms chalk layer in false proof layer；
Using dry compound machine to be combined with aluminium foil by described chalk layer, control recombination velocity is 160m/min, compounding machine one
The temperature in district is 60 DEG C, the temperature in compounding machine two district is 80 DEG C, the temperature in compounding machine three district is 90 DEG C, and tympanites due to heat temperature is 60 DEG C,
Thus on described chalk layer, form Al layer；
To be combined with eva film with Al layer, control recombination velocity is 170m/min the most again, and the temperature in compounding machine one district is
60 DEG C, the temperature in compounding machine two district be 70 DEG C, the temperature in compounding machine three district be 80 DEG C, tympanites due to heat temperature is 70 DEG C；
Material after being finally combined is placed in curing chamber, and controlling curing temperature is 45 DEG C, and the time is 50h, can be prepared by
Described composite membrane.
Embodiment 8
The composite membrane printing variable code in location described in the present embodiment include being sequentially connected with the BOPET layer of setting, patterned layer,
False proof layer, chalk layer, Al layer, BOPA layer and PE layer；
The preparation method of above-mentioned composite membrane comprises the steps:
S1, use with aluminum as electrolyte, the corona machine of 5KW electrode the surface of BOPET film is carried out sided corona treatment, corona
Speed be 120m/min；
S2, intaglio press is utilized to print liposoluble type ink on a surface of the BOPET film after sided corona treatment,
Control print speed printing speed is 150m/min, baking temperature is 50 DEG C, thus forms patterned layer in BOPET film；
S3, temperature be 45 DEG C and humidity be the BOPET film completing step S2 is carried out under conditions of 55% for time 22h
Corona Processing for removing；
S4, at the specified location spray printing UV ink of the patterned layer after corona Processing for removing, thus shape in patterned layer
Become variable code false proof layer；
S5, recycling intaglio press prints chalk in described false proof layer, and to control print speed printing speed be 175m/min, do
Dry temperature is 50 DEG C, thus forms chalk layer in false proof layer；
Using dry compound machine to be combined with aluminium foil by described chalk layer, control recombination velocity is 170m/min, compounding machine one
The temperature in district is 55 DEG C, the temperature in compounding machine two district is 65 DEG C, the temperature in compounding machine three district is 75 DEG C, and tympanites due to heat temperature is 60 DEG C,
Thus on described chalk layer, form Al layer；
Again will be with Al layer and BOPA Film laminated, control recombination velocity is 180m/min, and the temperature in compounding machine one district is 55
DEG C, the temperature in compounding machine two district be 65 DEG C, the temperature in compounding machine three district be 80 DEG C, tympanites due to heat temperature is 60 DEG C, thus at described Al
BOPA layer is formed on layer；
Then will be with BOPA layer and PE Film laminated, control recombination velocity is 175m/min, and the temperature in compounding machine one district is
60 DEG C, the temperature in compounding machine two district be 70 DEG C, the temperature in compounding machine three district be 80 DEG C, tympanites due to heat temperature is 60 DEG C, thus described
PE layer is formed on BOPA layer；
Material after being finally combined is placed in curing chamber, and controlling curing temperature is 50 DEG C, and the time is 50h, can be prepared by
Described composite membrane.
Embodiment 9
The composite membrane printing variable code in location described in the present embodiment include being sequentially connected with the BOPET layer of setting, patterned layer,
False proof layer, chalk layer, Al layer, BOPA layer and CPP layer；
The preparation method of above-mentioned composite membrane comprises the steps:
S1, use with aluminum as electrolyte, the corona machine of 5.5KW electrode the surface of BOPET film is carried out sided corona treatment, electricity
Dizzy speed is 100m/min；
S2, intaglio press is utilized to print liposoluble type ink on a surface of the BOPET film after sided corona treatment,
Control print speed printing speed is 200m/min, baking temperature is 50 DEG C, thus forms patterned layer in BOPET film；
S3, temperature be 50 DEG C and humidity be the BOPET film completing step S2 is carried out under conditions of 65% for time 14h
Corona Processing for removing；
S4, at the specified location spray printing UV ink of the patterned layer after corona Processing for removing, thus shape in patterned layer
Become variable code false proof layer；
S5, recycling intaglio press prints chalk in described false proof layer, and to control print speed printing speed be 150m/min, do
Dry temperature is 70 DEG C, thus forms chalk layer in false proof layer；
Using dry compound machine to be combined with aluminium foil by described chalk layer, control recombination velocity is 175m/min, compounding machine one
The temperature in district is 50 DEG C, the temperature in compounding machine two district is 65 DEG C, the temperature in compounding machine three district is 80 DEG C, and tympanites due to heat temperature is 60 DEG C,
Thus on described chalk layer, form Al layer；
Again will be with Al layer and BOPA Film laminated, control recombination velocity is 180m/min, and the temperature in compounding machine one district is 55
DEG C, the temperature in compounding machine two district be 65 DEG C, the temperature in compounding machine three district be 80 DEG C, tympanites due to heat temperature is 60 DEG C, thus at described Al
BOPA layer is formed on layer；
Then will be with BOPA layer and CPP Film laminated, control recombination velocity is 165m/min, and the temperature in compounding machine one district is
60 DEG C, the temperature in compounding machine two district be 70 DEG C, the temperature in compounding machine three district be 80 DEG C, tympanites due to heat temperature is 60 DEG C, thus described
CPP layer is formed on BOPA layer；
Material after being finally combined is placed in curing chamber, and controlling curing temperature is 45 DEG C, and the time is 55h, can be prepared by
Described composite membrane.
Comparative example 1
The structure of the composite membrane in this comparative example is same as in Example 1, but the preparation method bag of the composite membrane of this comparative example
Include following steps:
S1, utilizing intaglio press to print liposoluble type ink on a surface of BOPET film, controlling print speed printing speed is
220m/min, baking temperature are 60 DEG C, thus form patterned layer in BOPET film；
S2, at the specified location spray printing UV ink of described patterned layer, thus in patterned layer, form variable code false proof layer；
Described false proof layer is combined by S3, employing dry compound machine with eva film, and control recombination velocity is 180m/min, multiple
The temperature in He Ji mono-district is 50 DEG C, the temperature in compounding machine two district is 60 DEG C, the temperature in compounding machine three district is 70 DEG C, and tympanites due to heat temperature is
50℃；Material after being combined again is placed in curing chamber, and controlling curing temperature is 40 DEG C, and the time is 48h, can be prepared by described multiple
Close film.
Comparative example 2
The structure of the composite membrane in this comparative example is same as in Example 1, but the preparation method bag of the composite membrane of this comparative example
Include following steps:
S1, use with aluminum as electrolyte, the corona machine of 2.5KW electrode the surface of BOPET film is carried out sided corona treatment, electricity
Dizzy speed is 110m/min；
S2, intaglio press is utilized to print liposoluble type ink on a surface of the BOPET film after sided corona treatment,
Control print speed printing speed is 220m/min, baking temperature is 60 DEG C, thus forms patterned layer in BOPET film；
S3, at the specified location spray printing UV ink of described patterned layer, thus in patterned layer, form variable code false proof layer；
Described false proof layer is combined by S4, employing dry compound machine with eva film, and control recombination velocity is 180m/min, multiple
The temperature in He Ji mono-district is 50 DEG C, the temperature in compounding machine two district is 60 DEG C, the temperature in compounding machine three district is 70 DEG C, and tympanites due to heat temperature is
50℃；Material after being combined again is placed in curing chamber, and controlling curing temperature is 40 DEG C, and the time is 48h, can be prepared by described multiple
Close film.
Experimental example 1
Heat sealability and toughness to the composite membrane that the above embodiment of the present invention 4,5 prepares are tested, result
As shown in table 1.
The physical property of the composite membrane that table 1 embodiment 4,5 prepares
| Embodiment 4 | Embodiment 5 | |
| Heat-sealing temperature (DEG C) | 120 | 100 |
| Toughness (J) | 2.5 | 2.62 |
As can be seen from Table 1, compared with Example 4, the composite membrane that embodiment 5 prepares has lower heat-sealing temperature and more
High toughness, thus illustrates by using the heat sealing film of specific composition to be conducive to improving the low temperature heat seal of composite membrane
And toughness.
Experimental example 2
The composite membrane preparing the above embodiment of the present invention 1, comparative example 1-2 carries out barcode scanning, compares the complexity of barcode scanning,
Comparing the bonding firmness between variable code false proof layer and printing layer in each composite membrane the most in the lump, result is as follows:
Comparative example 1 is when without the BOPET film surface spray printing variable code of sided corona treatment, and the cohesion of UV ink is very fast, lines
Relatively thin, cause variable code pattern barcode scanning difficulty, and the bonding intensity between variable code and BOPET film is less, uses adhesive tape
Gently glue i.e. to fall.
Comparative example 2 has carried out sided corona treatment to BOPET film so that the dyne value of BOPET film is 52, is suitable to print fat
Molten type ink so that in BOPET film surface forming patterned layer, but due to patterned layer formed after BOPET film is not carried out
Corona Processing for removing, when spray printing variable code, UV ink diffusion is very fast, and lines are interlaced, cause variable code dim pattern not
Clearly, barcode scanning difficulty；Bonding intensity between variable code and BOPET film is relatively big, does not falls with adhesive tape is gently viscous.
Embodiment 1 first carries out sided corona treatment to BOPET film so that the dyne value of BOPET film is 52, is suitable to print fat
Molten type ink is not in BOPET film surface forming patterned layer, to carry out corona Processing for removing to BOPET film, making
The dyne value obtaining BOPET film is reduced to 42-48, and when spray printing variable code, UV ink diffusion is suitable, and pattern forming is preferable, sweeps
Code is easily；And the bonding intensity between variable code and BOPET film is preferable, do not fall with adhesive tape is gently viscous.
Obviously, above-described embodiment is only for clearly demonstrating example, and not restriction to embodiment.Right
For those of ordinary skill in the field, can also make on the basis of the above description other multi-form change or
Variation.Here without also cannot all of embodiment be given exhaustive.And the obvious change thus extended out or
Change among still in the protection domain of the invention.
Claims (10)
1. print a preparation method for the composite membrane of variable code in location, comprise the steps:
S1, with aluminum as electrolyte and the electrode that uses power to be 2.5～7.0KW carries out sided corona treatment to the surface of printing layer；
S2, on a surface of the printing layer after sided corona treatment printing-ink, formed patterned layer；
S3, it is 35-60 DEG C and humidity is the printing layer completing step S2 to be carried out corona under conditions of 50～70% to disappear in temperature
Except processing；
S4, in the patterned layer after corona Processing for removing spray printing variable code, formed false proof layer；
S5, in described false proof layer compound thermal sealing, and through maturation process, can be prepared by described composite membrane.
The preparation method of the composite membrane of variable code is printed, it is characterised in that described printing in location the most according to claim 1
Layer is BOPET film or BOPP film.
The preparation method of the composite membrane of variable code is printed, it is characterised in that described heat-sealing in location the most according to claim 1
Layer is PE film, CPP film or EVA film, or the 1-butylene that described hot sealing layer is the LDPE by 20～40wt%, 10～30wt% is altogether
The thin film that the mPE of 1-the octene copolymer LLDPE, 20～30wt% of poly-LLDPE, 10～30wt% is blow molded after being blended.
4. according to the preparation method of the composite membrane printing variable code in the location described in any one of claim 1-3, it is characterised in that
Step S2 uses intaglio press printing-ink, and to control print speed printing speed be 100～220m/min, and baking temperature is 40～80
℃。
5. according to the preparation method of the composite membrane printing variable code in the location described in any one of claim 1-4, it is characterised in that
Also include that first printing chalk in step S5 in described false proof layer forms chalk layer, more compound described heat-sealing on described chalk layer
Layer；
The formation speed of described chalk layer is 100～220m/min, and baking temperature is 40～80 DEG C.
6. according to the preparation method of the composite membrane printing variable code in the location described in any one of claim 1-5, it is characterised in that
Also include step S5 is first combined in described false proof layer or chalk layer barrier layer, more compound described heat-sealing on described barrier layer
Layer；
Described barrier layer is aluminium foil or VM-PET film.
7. according to the preparation method of the composite membrane printing variable code in the location described in any one of claim 1-6, it is characterised in that
Also include first composite strengthening layer on described false proof layer, chalk layer or barrier layer in step S5, more compound on described enhancement layer
Described hot sealing layer；
Described enhancement layer is BOPA film or BOPET film.
8. according to the preparation method of the composite membrane printing variable code in the location described in any one of claim 1-7, it is characterised in that
Step S5 uses compounding machine to realize described recombination process, controls recombination velocity≤180m/min, and the temperature in compounding machine one district is 50
～the temperature of 75 DEG C, compounding machine two district be 60～80 DEG C, the temperature in compounding machine three district be 70～90 DEG C, tympanites due to heat temperature is 50～70
℃。
9. according to the preparation method of the composite membrane printing variable code in the location described in any one of claim 1-8, it is characterised in that
Curing temperature in step S5 is 40～50 DEG C, time >=48h.
10. in the location prepared by the preparation method described in any one of claim 1-9, print the composite membrane of variable code.
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| CN106079791B (en) | 2019-06-21 |
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