CN201553394U - Composite cold seal packaging film - Google Patents
Composite cold seal packaging film Download PDFInfo
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- CN201553394U CN201553394U CN2009202684753U CN200920268475U CN201553394U CN 201553394 U CN201553394 U CN 201553394U CN 2009202684753 U CN2009202684753 U CN 2009202684753U CN 200920268475 U CN200920268475 U CN 200920268475U CN 201553394 U CN201553394 U CN 201553394U
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Abstract
The utility model discloses a cold seal packaging film, in particular to a composite cold seal packaging film with the function of preventing high temperature conglutination. The composite cold seal packaging film structurally comprises release BOPP/INK/AD/MPET or MOPP/CS, wherein the release BOPP not only does not have any pollutant release or transfer but also can avoid BOPP and CS conglutination problem under high temperature and high humidity conditions. The product not only has no problem that pollutants are transferred to the inner layer of packaging materials or cold sealing adhesive, but also has no BOPP and CS conglutination problem under high temperature and high humidity conditions, the production technique process is the same as common composite cold seal packaging, and does not need special treatment, the comprehensive cost is low, and the film has stronger competitiveness.
Description
Technical field
The utility model relates to the cold envelope packaging film that a kind of packaging for foodstuff field is used, and particularly relates to a kind of compound cold envelope packaging film with anti-high temperature adhesion function.
Background technology
The outstanding feature of cold envelope packaging film has: when the airtight involution of packing, need not heat, the involution that only the depended on pressure effect can be firm under the normal temperature state together; Cold package dress flat appearance, attractive in appearance; The packing speed of production is fast; Customer Yi Kaiqi.Therefore, in the packing of To Be Protected from Heat content such as chocolate, candy, biscuit, ice cream, and the fields such as packing of the emergency aid articles of pharmaceuticals industry and disinfection tool have obtained using widely.
At present, the structure of existing cold envelope packaging film mainly contains following four classes:
A:OPV (cold envelope protection gloss oil layer)/INK (ink lay)/MOPP (bidirectional stretching polypropylene film of aluminizing)/CS (cold seal glue);
B:OPV (cold envelope protection gloss oil layer)/INK (ink lay)/BOPP (bidirectional stretching polypropylene film)/CS (cold seal glue);
C:OPV (cold envelope protection gloss oil layer)/BOPP (bidirectional stretching polypropylene film)/INK (ink lay)/AD (adhesives)/MPET (aluminized mylar) or MOPP (bidirectional stretching polypropylene film of aluminizing)/CS (cold seal glue);
D:BOPP (bidirectional stretching polypropylene film)/INK (ink lay)/AD (adhesives)/MPET (aluminized mylar) or MOPP (bidirectional stretching polypropylene film of aluminizing)/CS (cold seal glue);
In the above structure; A, B belong to the cold package dress of table impression layer structure; the OPV (cold envelope protection gloss oil) of coating directly contacts with cold seal glue with the innermost layer of packing; OPV even INK (printing ink) often occur and be transferred on packing internal layer or the cold seal glue, pollute the contaminated and leak free problem fully of content or cold seal glue.The cold package of seal composite structure dress in C-structure belongs to, though printing ink can not shift in the centre, branch problem still appears in OPV, causes content to pollute or the contaminated and leak free problem fully of cold seal glue.The cold package dress of seal composite structure in the use at present of D structure is maximum, the situation that does not exist OPV or INK to shift, but, in storage and transport process, run into the problem that the CS (cold seal glue) of BOPP (bidirectional stretching polypropylene film) that the top layer often appears in hot and humid weather and internal layer is sticked together, cause whole coil packing material can't open and scrap.For this reason, the D infrastructure product is in storage and transport process, and the humiture that must control environment is used low temperature counter (temperature is lower than 30 ℃) transportation, thereby causes transport difficulty to strengthen the problem that traffic cost is high.
Summary of the invention
The purpose of this utility model is, overcome the defective that existing cold envelope packaging film exists, and a kind of new compound cold envelope packaging film is provided, it neither exists any pollutants to transfer on packing internal layer or the cold seal glue, (temperature is not less than 50 ℃ can to tolerate hot and humid environment in the common transportation again, relative humidity is not less than 75%RH), BOPP and CS layer do not produce unacceptable adhesion problems, have anti-high temperature adhesion function.
The purpose of this utility model and solve its technical matters and realize by the following technical solutions.According to a kind of compound cold envelope packaging film that the utility model proposes, be the pattern that adopts release BOPP (bidirectional stretching polypropylene film) to cooperate with specific coating cold seal glue.The structure of compound cold envelope packaging film is: release BOPP (bidirectional stretching polypropylene film)/INK (ink lay)/AD (adhesives)/MPET (aluminized mylar) or MOPP (bidirectional stretching polypropylene film of aluminizing)/CS (cold seal glue).
Compound cold envelope packaging film according to the utility model embodiment, described release BOPP rete is made up of release layer, transparent intermediate layer, transparent corona layer, its layer thickness ratio is 1: 3: 1, outer field release layer contain 0.1～1.0% percentage by weight based on nanoscale TiO
2, SiO
2The release master batch of mold release contains simultaneously the high temperature resistant homo-polypropylene of 50～90% percentage by weights in the outer release layer prescription; Internal layer need carry out corona treatment, and following dynamo-electric dizzy value reaches more than 40 dyne, and stable back corona value reaches more than 38 dyne.
According to the compound cold envelope packaging film of the utility model embodiment, described high temperature homo-polypropylene is the PP material with high-temperature stability, but heatproof reaches 140 ℃ or above temperature.
Compound cold envelope packaging film according to the utility model embodiment, described coating cold seal glue be conventional be the glue of main component with the natural rubber, wherein be added with an amount of acrylic copolymer, anti fouling composition, defoamer, chemical stabilizer etc., its solid content is 55～60%.It locatees the internal layer that is coated on laminated film by the mode of intaglio plate coating.
The utility model also provides a kind of preparation method of compound cold envelope packaging film, and it may further comprise the steps:
A. release BOPP film, by 3 layer co-extruding biaxial stretched explained hereafter, the layer thickness ratio is 1: 3: 1, and skin is a release layer, and internal layer is the corona layer, and following dynamo-electric dizzy value reaches more than 40 dyne;
B. the pattern that needs in the internal layer corona surface printing of release BOPP film of the mode by intaghlio printing;
C. release BOPP film that will print by the compound mode of dry method and MPET (aluminized mylar) or MOPP (bidirectional stretching polypropylene film of aluminizing) are compound;
D. by the mode of intaglio plate location coating, at complex film release BOPP/MPET or semi-finished mylar face of MOPP or Biaxially oriented polypropylene face location coating cold seal glue, coating weight is 2～5g/m
2
E. with above coated compound cold envelope packaging film as required size cut, rolling, packing, make compound cold envelope packaging film finished product.
By the compound cold envelope packaging film that above technological process is produced, interlayer combined strength bination 〉=0.7N/15mm, cold sealing strength 〉=2N/15mm, the adhesion intensity≤0.5N/15mm of release BOPP and cold seal glue under the normal temperature; After in 70 ℃ of environment, carrying out 1 month high temperature resistant test, the adhesion intensity of release BOPP and cold seal glue still≤0.5N/15mm, not having any pollutants transfers on the cold seal glue or does not have any cold seal glue and transfer on the BOPP, cold sealing strength still 〉=2N/15mm, interlayer combined strength bination 〉=0.7N/15mm.
By technique scheme, compound cold envelope packaging film of the present utility model has following advantage at least:
1) the utility model both contamination-free transfer to problem on packing internal layer or the cold seal glue, the problem of BOPP and CS adhesion under hot and humid condition not again.
2) the utility model is identical with conventional cold package dress product in production process, need not any equipment or technological transformation, has very high practical value.
3) the utility model makes that by saving the expense of accumulating link whole cost is low, has the higher market competitiveness.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification sheets, and for above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the structure composition diagram of compound cold envelope packaging film of the present utility model.
Fig. 2 is the structure composition diagram of release BOPP film
The specific embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined utility model purpose is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to a kind of compound cold its specific embodiment of envelope packaging film, method, step, feature and the effect thereof that the utility model proposes, describe in detail as after.
A kind of compound cold envelope packaging film of the present utility model, comprise and be positioned at outermost release BOPP film, it is by 3 layer co-extruding biaxial stretched explained hereafter, the layer thickness ratio is 1: 3: 1, skin is a release layer, interlayer is the central, clear layer, and internal layer is the corona layer, and following dynamo-electric dizzy value reaches more than 40 dyne.Gross thickness is 18 microns.Wherein, the layer thickness of release layer (top layer), central, clear layer and corona layer is followed successively by 2～4 microns, 10～12 microns, 2～4 microns.The high temperature resistant homo-polypropylene that contains 50～90% percentage by weights in the prescription of release layer, also contain simultaneously 0.1～1.0% percentage by weight based on nanoscale SiO
2, TiO
2The release master batch of mold release (antiblocking agent), other are plain polypropylene and conventional additives.Central, clear layer 2 is identical with the prescription of common BOPP film with corona layer 3.High temperature resistant homo-polypropylene is the PP material with high-temperature stability, but heatproof reaches 140 ℃ or above temperature, and it is a kind of high three-dimensional, the homopolymerization PP of systematicness, it compares the crystallinity height with general PP, is the rigidity of product and a kind of resin that resistance to effect of heat has essence to improve.Like this, the skin of release BOPP film has release preferably effect, prevents adhesion; The internal layer of release BOPP film need carry out corona treatment, and following dynamo-electric dizzy value reaches more than 40 dyne, and stable back corona value reaches more than 38 dyne.
The release layer 1 of release BOPP film is at the skin of compound cold envelope packaging film product, and specific cold seal glue 5 is at the internal layer of compound cold envelope packaging film product.When compound cold envelope packaging film product rolling, release BOPP release layer 1 and cold seal glue 5 direct contacts, stack from level to level.The finished product of harvest in the above described manner twists in the accumulating link, runs into hot and humid environment, BOPP and the cold seal glue phenomenon that can not stick together, and both separate easily; Simultaneously, release BOPP film release layer 1 no any pollutants breaks away from or transfers on packaging film internal layer or the cold seal glue, and the cold sealing strength of promptly compound cold envelope packaging film does not reduce.Described specific coating cold seal glue 5 be conventional be the glue of main component with the natural rubber, wherein be added with an amount of acrylic copolymer, anti fouling composition, defoamer, chemical stabilizer etc., its solid content is 55～60%.It locatees the internal layer that is coated on laminated film by the mode of intaglio plate coating.
The preparation method of this release BOPP thin film, it may further comprise the steps:
Batch mixing is with dry: each layer (release layer, central, clear layer, corona layer) raw material particle fully stirs, and it is mixed, and is carrying out the drying processing then;
Fusion and casting sheet: the fusion in extruder separately of each that mixes layer raw material, wherein, the more common BOPP of the melt temperature of release layer fills a prescription high slightly about 10 ℃, and the resin of fusion flows out by T type mouth mould, and be attached to the sharp cooling roll surface rapidly, form solid-state sheet material;
Biaxial tension: solid-state sheet material enters the biaxial tension position, at first carries out longitudinal stretching, carries out cross directional stretch then, forms the polypropylene film of biaxial tension;
Thickness measuring, corona and rolling: after the online thickness measurement of polypropylene film process through biaxial tension, beat corona treatment, be wound into half-blank then at the corona layer;
Ageing treatment with cut: the half-blank of above rolling is placed on the ageing treatment of carrying out certain hour in the specific temperature and humidity environment, and width cuts into rouleau as required then, is the release BOPP thin film finished product.
As shown in Figure 1, have the compound cold envelope packaging film of anti-high temperature adhesion function, 1 is release bidirectional stretching polypropylene film layer, and 2 is ink lay, and 3 is adhesives, and 4 are the bidirectional stretching polypropylene film of aluminizing, 5 cold seal glues for the location coating.Its structure of release BOPP film of the present utility model is followed successively by from the outer to the inner: release BOPP (bidirectional stretching polypropylene film) 1, INK (ink lay) 2, AD (adhesives) 3, MPET (aluminized mylar) 4, CS (cold seal glue) 5.
Adopt three-layer co-extruded stretch processes to produce as shown in Figure 2 release BOPP film, the layer thickness ratio is 1: 3: 1, and skin is a release layer 10, and interlayer is a central, clear layer 20, and internal layer is a corona layer 30, and following dynamo-electric dizzy value reaches more than 40 dyne;
The pattern that mode by intaghlio printing needs in the internal layer corona surface printing of release BOPP film;
Release BOPP film that will print by the compound mode of dry method and the face of aluminizing of MPET (aluminized mylar) are compound;
By the mode of intaglio plate location coating, at the semi-finished mylar face of complex film release BOPP/MPET location coating cold seal glue, coating weight is 4g/m
2
With above coated compound cold envelope packaging film as required size cut, rolling, packing, make compound cold envelope packaging film finished product.Compound cold envelope packaging film, interlayer combined strength bination 〉=1.0N/15mm, cold sealing strength 〉=2N/15mm, the adhesion intensity≤0.5N/15mm of release BOPP and cold seal glue under the normal temperature; After in 70 ℃ of environment, carrying out 1 month high temperature resistant test, the adhesion intensity of release BOPP and cold seal glue still≤0.5N/15mm, not having any pollutants transfers on the cold seal glue or does not have any cold seal glue and transfer on the BOPP, cold sealing strength still 〉=2N/15mm, interlayer combined strength bination 〉=1.0N/15mm.
Have the compound cold envelope packaging film of anti-high temperature adhesion function, its structure is: release BOPP (bidirectional stretching polypropylene film)/INK (ink lay)/AD (adhesives)/MOPP (bidirectional stretching polypropylene film of aluminizing)/CS (cold seal glue).As shown in Figure 1,1 is release bidirectional stretching polypropylene film layer, and 2 is ink lay, and 3 is adhesives, and 4 are the bidirectional stretching polypropylene film of aluminizing, 5 cold seal glues for the location coating.
Adopt three-layer co-extruded stretch processes to produce as shown in Figure 2 release BOPP film, the layer thickness ratio is 1: 3: 1, and skin is a release layer 10, and interlayer is a central, clear layer 20, and internal layer is a corona layer 30, and following dynamo-electric dizzy value reaches more than 40 dyne;
The pattern that mode by intaghlio printing needs in the internal layer corona surface printing of release BOPP film;
Release BOPP film that will print by the compound mode of dry method and the face of aluminizing of MOPP (bidirectional stretching polypropylene film of aluminizing) are compound;
By the mode of intaglio plate location coating, at the semi-finished bidirectional stretching polypropylene film face of complex film release BOPP/MOPP location coating cold seal glue, coating weight is 4.5g/m
2
With above coated compound cold envelope packaging film as required size cut, rolling, packing, make compound cold envelope packaging film finished product.Compound cold envelope packaging film, interlayer combined strength bination 〉=1.0N/15mm, cold sealing strength 〉=2N/15mm, the adhesion intensity≤0.5N/15mm of release BOPP and cold seal glue under the normal temperature; After in 70 ℃ of environment, carrying out 1 month high temperature resistant test, the adhesion intensity of release BOPP and cold seal glue still≤0.5N/15mm, not having any pollutants transfers on the cold seal glue or does not have any cold seal glue and transfer on the BOPP, cold sealing strength still 〉=2N/15mm, interlayer combined strength bination 〉=1.0N/15mm.
Compound cold envelope packaging film product of the present utility model both contamination-free is transferred to problem on packing internal layer or the cold seal glue, again the problem of BOPP and CS adhesion under hot and humid condition not; Production process and common compound cold package are pretended together, need not special processing; Integrated cost is low, has stronger competitive power.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, in not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solutions of the utility model content, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (2)
1. compound cold envelope packaging film, it is characterized in that: this compound cold envelope packaging film structure from the outer to the inner is successively: release BOPP rete, ink lay, adhesive phase, aluminized mylar layer or the bidirectional stretching polypropylene film layer of aluminizing, and cold seal glue layer.
2. compound cold envelope packaging film according to claim 1 is characterized in that: described release BOPP rete by release layer, transparent intermediate layer, and transparent corona layer form, its layer thickness ratio is 1: 3: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202684753U CN201553394U (en) | 2009-10-22 | 2009-10-22 | Composite cold seal packaging film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202684753U CN201553394U (en) | 2009-10-22 | 2009-10-22 | Composite cold seal packaging film |
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| CN201553394U true CN201553394U (en) | 2010-08-18 |
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|---|---|---|---|
| CN2009202684753U Expired - Fee Related CN201553394U (en) | 2009-10-22 | 2009-10-22 | Composite cold seal packaging film |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218875A (en) * | 2011-03-31 | 2011-10-19 | 常州市嘉鹏塑料制品有限公司 | Anti-adhesion medical composite film |
| CN105564815A (en) * | 2016-01-08 | 2016-05-11 | 上海奥特玛特物流设备有限公司 | Packaging method for cold pressing packaging |
| CN109652917A (en) * | 2018-12-26 | 2019-04-19 | 东阳市合兴金银丝材料有限公司 | A kind of discoloration is aluminized the processing technology of silk thread |
-
2009
- 2009-10-22 CN CN2009202684753U patent/CN201553394U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218875A (en) * | 2011-03-31 | 2011-10-19 | 常州市嘉鹏塑料制品有限公司 | Anti-adhesion medical composite film |
| CN102218875B (en) * | 2011-03-31 | 2014-05-28 | 常州市嘉鹏塑料制品有限公司 | Anti-adhesion medical composite film |
| CN105564815A (en) * | 2016-01-08 | 2016-05-11 | 上海奥特玛特物流设备有限公司 | Packaging method for cold pressing packaging |
| CN109652917A (en) * | 2018-12-26 | 2019-04-19 | 东阳市合兴金银丝材料有限公司 | A kind of discoloration is aluminized the processing technology of silk thread |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20141022 |
|
| EXPY | Termination of patent right or utility model |