CN105563967A - High-barrier transparent composite packaging film applicable to boiling sterilization process - Google Patents
High-barrier transparent composite packaging film applicable to boiling sterilization process Download PDFInfo
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- CN105563967A CN105563967A CN201410535629.6A CN201410535629A CN105563967A CN 105563967 A CN105563967 A CN 105563967A CN 201410535629 A CN201410535629 A CN 201410535629A CN 105563967 A CN105563967 A CN 105563967A
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Abstract
The invention provides a high-barrier transparent composite packaging film applicable to a boiling sterilization process. The composite packaging film is successively provided with, from exterior to interior, an outer printing layer, an intermediate barrier layer and an inner heat sealing layer, wherein the layers are bonded together by a polyurethane adhesive, the outer printing layer is a bisynchronously drawing nylon film, the intermediate barrier layer is a polyester film coated with polyvinylidene chloride emulsion, and the inner heat sealing layer is a boiling-grade casting polypropylene film. The high-barrier transparent composite packaging film applicable to the boiling sterilization process meets requirements of the process for sterilizing food by boiling at 121 DEG C for 30 min, can effectively overcome the problems that a conventional high-barrier composite packaging film is non-transparent and aluminum foils easily fracture when the conventional high-barrier composite packaging film and aluminum foil soft-plastic packaging bags are subjected to vacuum-pumping packaging, and has the characteristic of a three-layer composite structure; and the high-barrier transparent composite packaging film has good transparency, puncture resistance and mechanical strength and has high barrier performance which is equivalent to high barrier performance of a plastic-aluminum composite film.
Description
Technical field
The present invention relates to a kind of improvement of composite package film, especially a kind of transparent composite package film of high-barrier of applicable cooking disinfection technique.
Background technology
At present, what the high-isolating packaging film on market was selected mostly is aluminium foil material as barrier material, its product structure is more than three layers or three layers compounds, due to the characteristic of metal material, such flexible packaging composite membrane has excellent barrier property (oxygen transit dose, moisture transmitance), also aluminium foil class composite package film can meet the sterilization requirement of poach, boiling in food enterprise processing technology, also as the packaged form the most generally adopted in current high-barrier packaging for foodstuff simultaneously.But this material packaging has following problem: 1, cannot possess properties of transparency, be unfavorable for the displaying of content of good thing.2, aluminium foil production technology reaches 6-9 micron by aluminium ingot calendering technology, its ductility is poor, aluminium foil fracture is easily there is as composite membrane barrier layer soft In Aluminium Foil Packing of moulding when being subject to external force extruding or impacting, there is food spoilage risk, this is also a great problem of the current vast food of puzzlement and packaging material enterprise.3, aluminium foil is metal material, the incompetent heating using microwave be used for food.Therefore, for solving the problem, following requirement must be met: 1, possessing the material characteristic of high obstructing performance (resistance oxygen/block water) to improve the food storage phase; 2, meet the high temperature sterilization technological requirement of food at packaging process, i.e. 121 DEG C of 30min boilings; 3, material cost can not exceed aluminium foil of the same type, possesses the transparency.
By retrieving each technical papers and patent, also relevant report is rarely had to this technical field.Chinese invention patent: (patent No.: 201010602458.6) describe a kind of composite membrane of resistance to boiling preparation method, namely by a CPP layer, PVDC layer and the 2nd CPP layer that adhesive connects successively.Outermost layer in the three-decker of this laminated film and innermost layer all adopt PP structure, namely the three-decker of composite membrane adopts symmetrical expression, make composite membrane all keep synchronous shrinkage factor at heating, stretching and each layer of contraction state thus, avoid after composite membrane stretches and crimping occurs.In addition, because CPP has higher water-resistance, PVDC all has higher barrier to water and oxygen, makes the above-mentioned composite membrane of resistance to boiling have excellent barrier property.Above patented method all provides a kind of effective preparation method of the composite membrane of resistance to boiling, and product possesses the high obstructing performance of resistance to boiling, but in material, has very large difference with patent of the present invention: (1) this patent adopts PVDC emulsion coated polyester film and KPET film.(2) this patent skin adopts bi-directional synchronization drawing polyamide (nylon) film.
Chinese patent (the patent No.: 201320687403.9) describe a kind of temperature resistant transparent retort pouch, comprise bag body, described bag body comprises clear area and Printing Zone, clear area is positioned in the middle of bag body, Printing Zone is positioned at the involution portion of bag body, the layer structure of clear area comprises: internal layer is high transparency boiling film, and skin is high-transparency nylon print film, and described skin and internal layer are adhered by adhesive layer.Although this patent composite membrane is only two-layer structure compound, temperature resistant transparent boiling is completed from sack configuration, but with patent of the present invention, there is in material very large difference: do not possess high obstructing performance, namely above-mentioned material can reach transparent boiling, but shorter for pack content storage life, lose the meaning as high-grade packaging material.
Chinese invention patent (the patent No.: 201110083999.7) disclose a kind of transparent film of resistance to boiling and preparation method thereof.Namely to be directly composited by polypropylene layer and aramid layer, and claim before and after polypropylene layer and aramid layer boiling all can not peeling off phenomenon, steam penetrating capacity is not higher than 2.75, oxygen transit dose, not higher than 21.48, has suitable performance with 85 μm that adopt dry type composite algorithm to prepare thick PA/RCPP composite membranes.But with patent of the present invention, there is in material very large difference: do not possess high obstructing performance (steam cannot be reached, oxygen transit dose be all less than 1 technical indicator), especially poor to the barrier properties of oxygen, do not belong to the packaging of high-barrier characteristic.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of transparent composite package film of high-barrier of applicable cooking disinfection technique, meet food 121 DEG C of boiling 30min process for sterilizing, effectively can overcome the opaque problem of existing high-isolating packaging film and aluminium foil soft plastic packaging bag and vacuumize the problem of packing and aluminium foil easily occurring and ruptures, there is three-layer composite structure feature, possesses the good transparency, puncture-resistant and mechanical strength, and high obstructing performance is suitable with aluminum-plastic composite membrane.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of transparent composite package film of high-barrier of applicable cooking disinfection technique,
This composite package film ecto-entad is disposed with outer printed layers, intermediate barrier layer and internal layer hot sealing layer,
Fitted by adhesive for polyurethane between layers, the adhesion between layers of material can be improved, prevent layering;
Outer printed layers is bi-directional synchronization stretching level nylon membrane, and its harmony is good, and the wet shrinkage factor of chance is low, superior stretch-proof, chemical resistance, puncture resistant ability, high strength and the high grade of transparency can ensure the quality of printing effect, also have good protective effect to ink layer word and pattern simultaneously; The mechanical property of its excellence, the mechanical performance of packaging and puncture resistant ability are increased greatly, effectively prevents from being packaged in automatic packaging process and fill and broken bag or distortion because high pressure vacuumizes, simultaneously in follow-up bag process, bag row is smooth, can not produce rake angle;
Intermediate barrier layer is the polyester film of polyvinylidene emulsions coating, and that the barrier of its excellence has made packaging possess is moistureproof, airtight, shading and the performance such as corrosion-resistant;
Internal layer hot sealing layer is boiling level cast polypropylene film, and its resistance to boiling ability ensure that the heatproof requirement of 121 DEG C of 30min sterilization process, eliminates the hidden danger of the bad gas leakage that causes of heat seal and broken bag.
The thickness of outer printed layers is 0.015mm, and the thickness of intermediate barrier layer is 0.014mm, and the thickness of internal layer hot sealing layer is 0.075mm.
The transparent composite package film of high-barrier of a kind of applicable cooking disinfection technique provided by the invention, have high obstructing performance, high-mechanical property, cost is low, is applicable to the features such as food 121 DEG C of 30min sterilizations; Its printed layers adopts synchro-draw nylon membrane directly to print to replace conventional polyester film to do printing element, namely eliminate polyester film material, takes full advantage of again nylon membrane puncture resistant, advantage that intensity is high.The hot sealing layer directly contacted with product is that boiling grade polypropylene RCPP has good foodsafety, its pouch-type outward appearance is straight, overcome the existing aluminium foil composite package film generally adopted easily occur aluminium foil fracture cause food spoilage risk, be particularly suitable for requiring digestion resistant, high-barrier and high transparency, for vacuumizing the packing instructions of packaging; Be applicable to food and vacuumize packaging 121 degrees Celsius of cooking disinfection technological requirements of 30 minutes, can heating using microwave after packaging.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
As shown in Figure 1, a kind of transparent composite package film of high-barrier of applicable cooking disinfection technique,
This composite package film ecto-entad is disposed with outer printed layers 1, intermediate barrier layer 2 and internal layer hot sealing layer 3, is fitted between layers by adhesive for polyurethane;
Outer printed layers 1 is bi-directional synchronization stretching level nylon membrane;
The polyester film that intermediate barrier layer 2 is coated with for polyvinylidene emulsions;
Internal layer hot sealing layer 3 is boiling level cast polypropylene film.
The thickness of outer printed layers 1 is 0.015mm, and the thickness of intermediate barrier layer 2 is 0.014mm, and the thickness of internal layer hot sealing layer 3 is 0.075mm.
Adhesive layer thickness between printed layers 1 and barrier layer 2, between barrier layer 2 and hot sealing layer 3 is 0.005mm, and the gross thickness of this composite package film is 0.109mm.
Detect its light transmittance through the composite membrane transparency can reach >=90%, composite membrane mist degree≤10, barrier property detects its oxygen transit dose≤5cm3/ (m224h0.1Mpa), steam penetrating capacity≤5g/(m224h).This composite membrane can make three edge sealing bags through Bag Making Machine, vacuumizes packaging, the sterilization requirement of the boiling 121 DEG C of 30min that can reach a high temperature for food.Be widely used in food service industry.Meanwhile, according to product or client to the difference of the mechanical property requirements of packing material, adjust by the thickness changing each layer material, to reach the requirement of product or client.
Claims (2)
1. the transparent composite package film of high-barrier of applicable cooking disinfection technique, is characterized in that:
This composite package film ecto-entad is disposed with outer printed layers (1), intermediate barrier layer (2) and internal layer hot sealing layer (3), is fitted between layers by adhesive for polyurethane;
Outer printed layers (1) is bi-directional synchronization stretching level nylon membrane;
The polyester film that intermediate barrier layer (2) is coated with for polyvinylidene emulsions;
Internal layer hot sealing layer (3) is boiling level cast polypropylene film.
2. the transparent composite package film of high-barrier of a kind of applicable cooking disinfection technique according to claim 1, it is characterized in that: the thickness of outer printed layers (1) is 0.015mm, the thickness of intermediate barrier layer (2) is 0.014mm, and the thickness of internal layer hot sealing layer (3) is 0.075mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535629.6A CN105563967A (en) | 2014-10-13 | 2014-10-13 | High-barrier transparent composite packaging film applicable to boiling sterilization process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535629.6A CN105563967A (en) | 2014-10-13 | 2014-10-13 | High-barrier transparent composite packaging film applicable to boiling sterilization process |
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| CN105563967A true CN105563967A (en) | 2016-05-11 |
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| CN201410535629.6A Pending CN105563967A (en) | 2014-10-13 | 2014-10-13 | High-barrier transparent composite packaging film applicable to boiling sterilization process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107351459A (en) * | 2017-07-14 | 2017-11-17 | 重庆科欣塑料有限公司 | High temperature resistant negative and positive packaging bag and preparation method thereof |
| CN107618240A (en) * | 2017-09-26 | 2018-01-23 | 沈阳日新塑料包装制品有限公司 | Environment-friendly novel high-barrier resistance to 121oThe fit stretching composite membrane of C thermophilic digestions |
| CN108045044A (en) * | 2017-12-07 | 2018-05-18 | 上海久诚包装有限公司 | A kind of transparent high-barrier composite material and its production technology |
| CN111590986A (en) * | 2020-05-07 | 2020-08-28 | 合肥佛斯德新材料科技有限公司 | High-temperature-cooking-resistant composite packaging bag and preparation method thereof |
| CN112277415A (en) * | 2020-10-15 | 2021-01-29 | 金石包装（嘉兴）有限公司 | Medium-resistant composite membrane capable of achieving secondary sterilization and preparation method thereof |
-
2014
- 2014-10-13 CN CN201410535629.6A patent/CN105563967A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107351459A (en) * | 2017-07-14 | 2017-11-17 | 重庆科欣塑料有限公司 | High temperature resistant negative and positive packaging bag and preparation method thereof |
| CN107618240A (en) * | 2017-09-26 | 2018-01-23 | 沈阳日新塑料包装制品有限公司 | Environment-friendly novel high-barrier resistance to 121oThe fit stretching composite membrane of C thermophilic digestions |
| CN108045044A (en) * | 2017-12-07 | 2018-05-18 | 上海久诚包装有限公司 | A kind of transparent high-barrier composite material and its production technology |
| CN111590986A (en) * | 2020-05-07 | 2020-08-28 | 合肥佛斯德新材料科技有限公司 | High-temperature-cooking-resistant composite packaging bag and preparation method thereof |
| CN112277415A (en) * | 2020-10-15 | 2021-01-29 | 金石包装（嘉兴）有限公司 | Medium-resistant composite membrane capable of achieving secondary sterilization and preparation method thereof |
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Application publication date: 20160511 |