CN103722835A - Method for improving fastness of aluminized-stage polymer polypropylene material - Google Patents
Method for improving fastness of aluminized-stage polymer polypropylene material Download PDFInfo
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- CN103722835A CN103722835A CN201310734610.XA CN201310734610A CN103722835A CN 103722835 A CN103722835 A CN 103722835A CN 201310734610 A CN201310734610 A CN 201310734610A CN 103722835 A CN103722835 A CN 103722835A
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Abstract
The invention discloses a method for improving the fastness of an aluminized-stage polymer polypropylene material and relates to a film and a production process of the film. The material comprises a middle layer, a heat-seal layer and a corona layer, wherein the middle layer is made of binary random copolymerized polypropylene; the heat-seal layer is made of polypropylene with the concentration of 4000-5000ppm; and the corona layer is made of a mixture of 25-35 percent of ethylene-methyl methacrylate copolymer and the polypropylene with the concentration of 4000-5000ppm, compounded treatment is carried out on the mixture by an extruder with an encryption net at the heating temperature of 220-225 DEG C, then the mixture subjected to the compounded treatment stands in the environment with the constant temperature of 40 DEG C and the constant humidity of 40 percent RH for 48 hours, and then corona treatment is carried out by using a corona rod. Compared with the prior art, with the adoption of the method, the fastness of an aluminum layer after aluminizing is improved by 1.5 times, and the surface tension of the aluminum layer is the same as the aluminum layer before aluminizing; and meanwhile, as glue and a solvent are not used, the environment is more protected.
Description
Technical field
The present invention relates to a kind of film and production technology thereof, particularly a kind of polypropylene film and production technology thereof.
Background technology
Polypropylene is the polymer of nontoxic, odorless, the tasteless high crystallization of milky, and density only has 0. 90 ~ 0. 91g/cm
3, be one of kind the lightest in current all plastics.In polypropylene molecule structure, not containing polar functional group, be non-polar material, after being produced into film, be through corona out by product surface alligatoring, corona process makes film surface produce radical reaction and makes polymer occur to be cross-linked, airborne ionization product O
3general-CH
3be oxidized to=O of side chain ,-NH isopolarity functional group, make film surface produce surface can, can direct combination or aluminize.The tradition grade aluminium lamination fastness of C high polymer polypropylene film after aluminizing of aluminizing, is honored as a queen with EMMA film thermal, then the peeling force of upper cupping machine only has 0.5 ~ 0.8N/15mm, is not suitable for being used as and squeezes the skill of returning to work, otherwise can cause aluminium lamination to shift, peels off.That potential barrier is little, cannot be to AL because the polar functional group polarity of the generation after corona is little
3+produce large active force.Due to the standard day by day of food products market, the technical requirement in the field of packaging for foodstuff is at present more and more higher, for quantity demand rapid growth, the quality requirement of the vacuum aluminum-coated high polymer polypropylene film that is applied to packaging for foodstuff high-barrier purposes, is increased sharply.Common high polymer polypropylene aluminizer does thinner and thinner for the consideration thickness of downstream client cost, but its most important performance---the bad problem of the fastness of aluminizing is never significantly improved, and has because aluminium coated comes off the problem that causes barrier property to weaken and then greatly shorten the food security shelf life in its application process always.
Summary of the invention
The present invention is directed to deficiency of the prior art, provide a kind of grade high polymer polypropylene material of aluminizing to increase the method for fastness, the high polymer polypropylene material of aluminizing of preparing by this method, aluminium lamination fastness after aluminizing has improved 1.5 times, surface tension with aluminize before identical, do not use glue and solvent, more environmental protection simultaneously.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals: a kind of grade high polymer polypropylene material of aluminizing increases the method for fastness, material comprises intermediate layer, hot sealing layer and corona layer, it is characterized by, binary atactic copolymerized polypropene is selected in described intermediate layer, described hot sealing layer is selected the polypropylene with 4000ppm ~ 5000ppm concentration, described corona layer is selected and has been mixed 25% ~ 35% ethylene-methyl methacrylate methyl terpolymer and the concentration polypropylene in 3500ppm ~ 4000ppm concentration, then pass through again heating-up temperature and carry out Combined Processing at 220 ℃ ~ 225 ℃ and the extruder with densification network, again then in temperature constant at 40 ℃, constant in the environment of 40%RH standing at least 48 hours of humidity, finally by corona rod, carry out sided corona treatment.
In technique scheme, preferred described hot sealing layer is selected the polypropylene of 4000ppm concentration.
In technique scheme, preferred described corona layer is selected and has been mixed 30% ethylene-methyl methacrylate methyl terpolymer and the concentration polypropylene at 3500 ppm degree.
Arrange like this, the present invention selects an ethylene-methyl methacrylate methyl esters to add corona layer to.Ethylene-methyl methacrylate methyl esters still keeps its intrinsic mobility after screw rod shearing repeatedly, in ethylene-methyl methacrylate methyl esters molecular side chain, has a large amount of methyl methacrylates, the polar group that its polarity will be produced higher than sided corona treatment far away.By the way to corona layer polypropylene modification, implant polar functional group and substituent way, make to generate more macoradical of polarity after sided corona treatment, so improve aluminize after the absorption affinity of aluminium lamination (AL3+).Aluminium lamination fastness is increased to 1.5 ~ 2.0N/15mm.
Compared with prior art, the invention has the beneficial effects as follows: the high polymer polypropylene material of aluminizing of preparing by this method, the aluminium lamination fastness after aluminizing has improved 1.5 times, surface tension with aluminize before identical, do not use glue and solvent, more environmental protection simultaneously.
The specific embodiment
Below in conjunction with the specific embodiment, the present invention is described in further detail.
The inventive method has following embodiment.
Embodiment 1: a kind of grade high polymer polypropylene material of aluminizing increases the method for fastness, principal character is that binary atactic copolymerized polypropene is selected in intermediate layer, hot sealing layer is selected the polypropylene with 4000ppm concentration, corona layer is selected and has been mixed 25% ethylene-methyl methacrylate methyl terpolymer and the concentration polypropylene in 3500ppm concentration, then through heating-up temperature, at 220 ℃ and the extruder with densification network, carry out Combined Processing, then temperature constant in 40 ℃, the constant environment at 40%RH of humidity standing 48 hours, finally by corona rod, carry out sided corona treatment again.
Embodiment 2: a kind of grade high polymer polypropylene material of aluminizing increases the method for fastness, principal character is that binary atactic copolymerized polypropene is selected in intermediate layer, hot sealing layer is selected the polypropylene with 4500ppm concentration, corona layer is selected and has been mixed 30% ethylene-methyl methacrylate methyl terpolymer and the concentration polypropylene in 3750ppm concentration, then through heating-up temperature, at 220 ℃ and the extruder with densification network, carry out Combined Processing, then temperature constant in 40 ℃, the constant environment at 40%RH of humidity standing 48 hours, finally by corona rod, carry out sided corona treatment again.
Embodiment 3: a kind of grade high polymer polypropylene material of aluminizing increases the method for fastness, principal character is that binary atactic copolymerized polypropene is selected in intermediate layer, hot sealing layer is selected the polypropylene with 5000ppm concentration, corona layer is selected and has been mixed 30% ethylene-methyl methacrylate methyl terpolymer and the concentration polypropylene in 4000ppm concentration, then through heating-up temperature, at 225 ℃ and the extruder with densification network, carry out Combined Processing, then temperature constant in 40 ℃, the constant environment at 40%RH of humidity standing 48 hours, finally by corona rod, carry out sided corona treatment again.
Claims (3)
1. grade method for high polymer polypropylene material increase fastness of aluminizing, material comprises intermediate layer, hot sealing layer and corona layer, it is characterized by, binary atactic copolymerized polypropene is selected in described intermediate layer, described hot sealing layer is selected the polypropylene with 4000ppm ~ 5000ppm concentration, described corona layer is selected and has been mixed 25% ~ 35% ethylene-methyl methacrylate methyl terpolymer and the concentration polypropylene in 3500ppm ~ 4000ppm concentration, then pass through again heating-up temperature and carry out Combined Processing at 220 ℃ ~ 225 ℃ and the extruder with densification network, again then in temperature constant at 40 ℃, constant in the environment of 40%RH standing at least 48 hours of humidity, finally by corona rod, carry out sided corona treatment.
2. a kind of grade high polymer polypropylene material of aluminizing according to claim 1 increases the method for fastness, it is characterized by, and described hot sealing layer is selected the polypropylene of 4000ppm concentration.
3. a kind of grade high polymer polypropylene material of aluminizing according to claim 1 increases a method for fastness, it is characterized by, and described corona layer is selected and mixed 30% ethylene-methyl methacrylate methyl terpolymer and the concentration polypropylene at 3500 ppm degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310734610.XA CN103722835A (en) | 2013-12-27 | 2013-12-27 | Method for improving fastness of aluminized-stage polymer polypropylene material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310734610.XA CN103722835A (en) | 2013-12-27 | 2013-12-27 | Method for improving fastness of aluminized-stage polymer polypropylene material |
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| CN103722835A true CN103722835A (en) | 2014-04-16 |
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| CN201310734610.XA Pending CN103722835A (en) | 2013-12-27 | 2013-12-27 | Method for improving fastness of aluminized-stage polymer polypropylene material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085151A (en) * | 2014-07-17 | 2014-10-08 | 郁建国 | Aluminum-layer reinforced MCPP (Metallized Cast Polypropylene) film and production process thereof |
| CN106863919A (en) * | 2016-12-21 | 2017-06-20 | 黄圣秀 | The silver foil preparation method that UV prints color fastness can be improved |
| CN109080103A (en) * | 2018-08-01 | 2018-12-25 | 宁波瑞成包装材料有限公司 | Metallized heat-resistant anti-stripping film and production method thereof |
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|---|---|---|---|---|
| CN101143499A (en) * | 2007-09-30 | 2008-03-19 | 唐新国 | Vacuum aluminium plating film with high adhesion to aluminium and its production method |
| CN101380837A (en) * | 2008-10-27 | 2009-03-11 | 南京金中达新材料有限公司 | Aluminized non-stretching polypropylene film with enhanced aluminium layer peeling strength and preparation method thereof |
| CN102372119A (en) * | 2010-08-11 | 2012-03-14 | 苏州海顺包装材料有限公司 | Reinforced aluminium-plated level undrawn polypropylene film and production process thereof |
-
2013
- 2013-12-27 CN CN201310734610.XA patent/CN103722835A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101143499A (en) * | 2007-09-30 | 2008-03-19 | 唐新国 | Vacuum aluminium plating film with high adhesion to aluminium and its production method |
| CN101380837A (en) * | 2008-10-27 | 2009-03-11 | 南京金中达新材料有限公司 | Aluminized non-stretching polypropylene film with enhanced aluminium layer peeling strength and preparation method thereof |
| CN102372119A (en) * | 2010-08-11 | 2012-03-14 | 苏州海顺包装材料有限公司 | Reinforced aluminium-plated level undrawn polypropylene film and production process thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085151A (en) * | 2014-07-17 | 2014-10-08 | 郁建国 | Aluminum-layer reinforced MCPP (Metallized Cast Polypropylene) film and production process thereof |
| CN106863919A (en) * | 2016-12-21 | 2017-06-20 | 黄圣秀 | The silver foil preparation method that UV prints color fastness can be improved |
| CN109080103A (en) * | 2018-08-01 | 2018-12-25 | 宁波瑞成包装材料有限公司 | Metallized heat-resistant anti-stripping film and production method thereof |
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Application publication date: 20140416 |