CN102717571A - Microwave heating composite packaging film and preparation method thereof - Google Patents
Microwave heating composite packaging film and preparation method thereof Download PDFInfo
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- CN102717571A CN102717571A CN2012102241094A CN201210224109A CN102717571A CN 102717571 A CN102717571 A CN 102717571A CN 2012102241094 A CN2012102241094 A CN 2012102241094A CN 201210224109 A CN201210224109 A CN 201210224109A CN 102717571 A CN102717571 A CN 102717571A
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- 239000002131 composite material Substances 0.000 title claims abstract description 81
- 238000010438 heat treatment Methods 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims description 39
- 229920006280 packaging film Polymers 0.000 title abstract 6
- 239000012785 packaging film Substances 0.000 title abstract 6
- 238000007789 sealing Methods 0.000 claims abstract description 40
- 239000004698 Polyethylene Substances 0.000 claims abstract description 25
- 239000012528 membrane Substances 0.000 claims abstract description 20
- -1 polyethylene Polymers 0.000 claims abstract description 19
- 229920000573 polyethylene Polymers 0.000 claims abstract description 19
- 239000004677 Nylon Substances 0.000 claims abstract description 18
- 229920001778 nylon Polymers 0.000 claims abstract description 18
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 17
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims description 34
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 19
- 229910052760 oxygen Inorganic materials 0.000 claims description 19
- 239000001301 oxygen Substances 0.000 claims description 19
- 230000000149 penetrating effect Effects 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 229920001526 metallocene linear low density polyethylene Polymers 0.000 claims description 8
- 238000007747 plating Methods 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 8
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 6
- 239000005977 Ethylene Substances 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 6
- 239000000806 elastomer Substances 0.000 claims description 6
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 6
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 6
- 239000003595 mist Substances 0.000 claims description 6
- 238000009736 wetting Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 230000004888 barrier function Effects 0.000 abstract description 3
- 230000035939 shock Effects 0.000 abstract description 2
- 239000004712 Metallocene polyethylene (PE-MC) Substances 0.000 abstract 2
- 239000012793 heat-sealing layer Substances 0.000 abstract 2
- 239000012748 slip agent Substances 0.000 abstract 2
- 244000002639 Delonix regia Species 0.000 abstract 1
- 230000003044 adaptive effect Effects 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000011888 foil Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 229920006284 nylon film Polymers 0.000 abstract 1
- 239000011347 resin Substances 0.000 description 27
- 229920005989 resin Polymers 0.000 description 27
- 239000005030 aluminium foil Substances 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229920006233 biaxially oriented polyamide Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000013622 meat product Nutrition 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 210000004276 hyalin Anatomy 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 235000021067 refined food Nutrition 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wrappers (AREA)
Abstract
The invention discloses a microwave heating composite packaging film which is formed by compositing a polyethylene film, a two-way tensile silicon-plated nylon membrane and a two-way tensile nylon film. The polyethylene film is composed of a corona layer and a heat sealing layer, the heat sealing layer is composed of metallocene polyethylene, low-density polyethylene and slip agent, and weight ratio among the metallocene polyethylene, the low-density polyethylene and the slip agent is 50-85:15-50:1-2. Barrier properties of the microwave heating composite packaging film exceed requirements of existing products containing aluminum foil. The microwave heating composite packaging film has good temperature adaptive performance, can be processed, transported and stored at the temperature ranging from -40 DEG C to 121 DEG C, has excellent mechanical performance, is remarkable in shock-resistant effect and punctuation-resistant effect, has the advantages of being low in sealing temperature, short in heat sealing temperature and high in sealing strength, and prevents packing contents from being influenced due to the fact that bags are damaged because of too high heat sealing temperature. Clear and flamboyant patterns can be printed on the microwave heating composite packaging film, and the microwave heating composite packaging film has good practicability.
Description
Technical field
The present invention relates to a kind of packaging material, but especially a kind of heating using microwave composite package film and preparation method thereof.
Background technology
The Along with people's growth in the living standard, rhythm of life is accelerated, and the demand of the easy processed food of the other side constantly increases.Consumption figure for quick cooked meat product increases with the speed more than 10% every year.The main aluminum-plastic composite membrane packing that adopts of at present quick cooked meat product packing; Typical case's packaging structure has structures such as PET/AL/PA/CPP, PA/AL/CPP, PA/AL/PA/LLDPE, and above material structure has all selected aluminium foil as barrier layer for the requirement that reaches the shelf-life.There is following problem in this type of packing: content can not be seen because the use of aluminium foil causes this kind packing opaque in (1).(2), can only take packing when needing heating apart and content is put into microwave Special disc inherence carries out heating using microwave because this packing of use of aluminium foil can not directly be used for heating using microwave.(3) can not give full play to the effect of quick packing.
Summary of the invention
But the technical problem that the present invention will solve provides a kind of heating using microwave composite package film of high transparent, high-barrier; But the present invention also provides the preparation method of this heating using microwave composite package film.
For solving the problems of the technologies described above, the technical scheme that the present invention taked is: it from inside to outside is followed successively by by polyethylene film (PE), biaxial tension plating silicon nylon membrane (GL-PA) and biaxial tension nylon membrane (BOPA) and is composited; Described polyethylene film is made up of corona layer and hot sealing layer; Described hot sealing layer is made up of metallocene PE (mPE), low density polyethylene (LDPE) (LDPE) and slipping agent, and the weight ratio of said metallocene PE, low density polyethylene (LDPE) and slipping agent is 50～85:15～50:1～2.
The present invention adopts the metallocene PE of property index: fusing point is 82～84 ℃, and elongation at break is greater than 500%, and yield tensile strength is greater than 8Mpa, and fracture tensile strength is greater than 50Mpa, and dart impact strength is greater than 140g; Adopt the low density polyethylene (LDPE) of property index: fusing point is 100～105 ℃, and elongation at break is greater than 350%, and dart impact strength is greater than 75g.
The thickness of polyethylene film according to the invention is 80～90 microns.
Corona layer of the present invention is made up of the ethylene elastomer of 40～80% weight and the LLDPE of 20～60% weight.
The present invention adopts the ethylene elastomer of property index: fusing point is 65～66 ℃, and brittle temperature is less than-70 ℃; Adopt the LLDPE of property index: fusing point is 120～125 ℃, and elongation at break is greater than 420%, and fracture tensile strength is greater than 45Mpa.
The present invention adopts the biaxial tension plating silicon nylon membrane of property index: hot strength: laterally>=and 200Mpa, vertically>=180Mpa; Elongation at break: laterally>=180%, vertically>=80%; Percent thermal shrinkage≤3%; Coefficient of friction≤0.80; Mist degree≤1.5%; Glossiness>=85%; Inner face wetting tension>=52mN/m; Steam penetrating capacity is lower than 0.4g/ (m
224h), OTR oxygen transmission rate is lower than 0.4cc/ (m
224h).
The present invention adopts the biaxial tension nylon membrane of property index: hot strength: laterally>=and 200Mpa, vertically>=180Mpa; Elongation at break: laterally>=180%, vertically>=80%; Percent thermal shrinkage≤3%; Coefficient of friction≤0.80; Mist degree≤1.5%; Glossiness>=85%; Inner face wetting tension>=52mN/m.
Preparation method's of the present invention step is: raw material co-extrusion modling in double-deck extruder of (1) said corona layer and hot sealing layer, process polyethylene film;
(2) the polyethylene film cooling and shaping of extrusion molding;
(3) polyethylene film behind the cooling and shaping and biaxial tension plating silicon nylon membrane and biaxial tension nylon membrane sticks with glue agent and carries out compoundly can obtaining described composite package film.
Extrusion temperature in the said step of preparation method of the present invention (1) is 210～260 ℃.
Hauling speed 20～40m/min in the said step of preparation method of the present invention (2) during cooling and shaping.
Adopt the beneficial effect that technique scheme produced to be: the present invention has adopted the biaxial tension plating silicon nylon membrane (GL-PA) with high obstructing performance, and its barrier property has surpassed the existing aluminium foil requirement of products that contains; Used have excellent weather resistance ethylene elastomer and metallocene resin in the inner layer polyethylene film, made it have good thermal adaptability ability, can adapt to-40 ℃ to 121 ℃ temperature range processing, transportation, store with good mechanical properties; Have excellent mechanical performance simultaneously, shock resistance effect and puncture effect are remarkable, and it is low to play the envelope temperature; The heat-sealing time is short; The characteristics that sealing-strength is high adapt to modernization automated packaging equipment fast more, avoided because of heat-sealing temperature too high; Sack is caused damage, pack content is exerted an influence; Three kinds of materials are nonmetal hyaline membrane among the present invention, so excellent and can directly be used for heating using microwave to the pack content visual effect; Clear, beautiful pattern can be printed in surface of the present invention, has better practicality.
The specific embodiment
Below in conjunction with specific embodiment the present invention is done further detailed explanation.
But a raw material that the heating using microwave composite package film is used is following:
Metallocene PE: model is Exceed 1018CA; Its performance indications are following: fusing point is 82～84 ℃, and elongation at break is greater than 500%, and yield tensile strength is greater than 8Mpa; Fracture tensile strength is greater than 50Mpa; Dart impact strength has excellent low-temperature heat-sealing effect greater than 140g, can improve the low-temperature heat-sealing performance and the sealing-strength of film after adding.Produce by Exxon Mobil Corporation.
Low density polyethylene (LDPE): model is that its performance of LD100AC is following: fusing point is 100-105 ℃, and elongation at break is greater than 350%, and dart impact strength is greater than 75g; Produce by Exxon Mobil Corporation.
Ethylene elastomer: model is A-4085S, and its performance indications are following: this raw material fusing point is at 66 ℃, and brittle temperature is lower than-70 ℃, can make film have excellent anti-freezing property after adding; By the Mitsui Chemical Manufacture.
LLDPE: model is LL1002X75, and its performance indications are following: fusing point is 120-125 ℃, and elongation at break is greater than 420%, and fracture tensile strength is greater than 45Mpa; Produce by Exxon Mobil Corporation.
Slipping agent is organic slipping agent, and its model is SL07PP, adds as slipping agent, can reduce the coefficient of friction of film; Produce by Mitsui Chemical Manufacture company.
Biaxial tension nylon membrane (BOPA), its technical indicator is following: hot strength: laterally>=200Mpa, vertically>=180 Mpa; Elongation at break: laterally>=180%, vertically>=80%; Percent thermal shrinkage≤3%; Coefficient of friction≤0.80; Mist degree≤1.5%; Glossiness>=85%; Inner face wetting tension>=52mN/m; Produce by foundation for a great undertaking company of Du Pont.
Biaxial tension plating silicon nylon membrane (GL-PA), its technical indicator is following: hot strength: laterally>=200Mpa, vertically>=180 Mpa; Elongation at break: laterally>=180%, vertically>=80%; Percent thermal shrinkage≤3%; Coefficient of friction≤0.80; Mist degree≤1.5%; Glossiness>=85%; Inner face wetting tension>=52mN/m, steam penetrating capacity is lower than 0.4g/! ㎡ 24h) and, OTR oxygen transmission rate is lower than 0.4cc/ (m224h); Produce by foundation for a great undertaking company of Du Pont.
Compound used adhesive is UK3640, is produced by Henkel Corp.; Adhesive operation concentration is controlled at examines grace cup 14～16 seconds for No. 3, suitable coating weight, and baking temperature is 60 ℃.
Above-mentioned and following hot strength detects according to GB 13022 standards; Elongation at break detects according to GB 13022 standards; Tearing strength detects according to QB/T 1130 standards; Peel strength detects according to GB 8808-88 standard; Heat sealing strength detects according to QB/T 2358-1998 standards and sweeps; Anti-pendulum impact strength detects according to the GB/T8809-88 standard; Coefficient of friction detects according to the GB10006-88 standard; The puncture performance detects according to BS 4816 standards; OTR oxygen transmission rate detects by the GB/T1038-2000 standard;
Above-mentioned and following steam penetrating capacity detects by the GB/T1037-1988 standard, and experimental condition is that temperature is (38 ± 0.6) ℃, relative humidity 90% ± 2%, during test with heat cover towards the low side of humidity.
The detection method of above-mentioned and following freeze proof cold tolerance is freeze proof cold tolerance: with sample behind-40 ℃ of held 2h, use film pendulum impact test appearance measure film impact property, confirm the cold resistance of packing according to the variation of front and back impact property;
Account form is following:
CT=(IR2/IR1)*100%
In the formula: CT-cold resistance, %
The anti-pendulum impact energy of the film of measuring under the IR1-standard environment condition, the anti-pendulum impact energy of the film of IR2--40 ℃ of mensuration.
Embodiment 1: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Proportioning raw materials: the resin of corona layer is the hybrid resin of A-4085S and LL1002X75, and the weight ratio of A-4085S and LL1002X75 is 8:2; The resin of hot sealing layer is the hybrid resin of Exceed 1018CA, LD100AC, SL07PP, the weight ratio 85:15:1 of Exceed 1018CA, LD100AC, SL07PP.
The preparation method: raw material co-extrusion modling in double-deck extruder of (1) said corona layer and hot sealing layer, process polyethylene film; The temperature of resin is 210～260 ℃ during extrusion molding;
(2) the polyethylene film cooling and shaping of extrusion molding; Hauling speed 25～40m/min, chilling temperature are 20～40 ℃;
(3) polyethylene film behind the cooling and shaping is cut edge;
(4) polyethylene film after cutting edge and biaxial tension are plated silicon nylon membrane and biaxial tension nylon membrane and are sticked with glue agent and carry out compound; Carry out compound, used adhesive operation concentration through dry compound machine and be controlled at and examine grace cup 14 seconds for No. 3, baking temperature is 80 ℃, and compounding machine speed is 120m/min;
(5) cut the rolling film at last, the thickness of processing the PE film is the composite package film of 90 μ m.
The technical indicator of present embodiment gained composite package film is following:
Hot strength: horizontal 350Mpa, vertical 480 Mpa; Elongation at break: horizontal 100%, vertical 80%; Tearing strength: horizontal 125N/mm, vertically 210N/mm; Peel strength: 5.0 N/15mm, heat sealing strength: 79N/15mm, anti-pendulum impact energy: 1.0 J, coefficient of friction: 0.32; Puncture performance 1.6N/ μ m; Freeze proof cold tolerance 70%; Anti-121 ℃, boiling in 60 minutes, peel strength 5.0 N/15mm after the boiling; Steam penetrating capacity 0.15 g/ ㎡ 24h), OTR oxygen transmission rate 0.21cc/ (m224h).
Embodiment 2: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
The weight ratio 50:15:1 of Exceed 1018CA, LD100AC, SL07PP, all the other are identical with embodiment 1 in the resin of hot sealing layer.
The heat sealing strength 53N/15mm of present embodiment gained composite package film.
Embodiment 3: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
The weight ratio 55:15:1 of Exceed 1018CA, LD100AC, SL07PP, all the other are identical with embodiment 1 in the resin of hot sealing layer.
The heat sealing strength 57N/15mm of present embodiment gained composite package film.
Embodiment 4: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
The weight ratio 60:15:1 of Exceed 1018CA, LD100AC, SL07PP, all the other are identical with embodiment 1 in the resin of hot sealing layer.
The heat sealing strength 60/15mm of present embodiment gained composite package film.
Embodiment 5: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
The weight ratio 65:15:1 of Exceed 1018CA, LD100AC, SL07PP, all the other are identical with embodiment 1 in the resin of hot sealing layer.
The heat sealing strength 64/15mm of present embodiment gained composite package film.
Embodiment 6: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
The weight ratio 70:15:1 of Exceed 1018CA, LD100AC, SL07PP, all the other are identical with embodiment 1 in the resin of hot sealing layer.
The heat sealing strength 67/15mm of present embodiment gained composite package film.
Embodiment 7: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
The weight ratio 75:15:1 of Exceed 1018CA, LD100AC, SL07PP, all the other are identical with embodiment 1 in the resin of hot sealing layer.
The heat sealing strength 71/15mm of present embodiment gained composite package film.
Embodiment 8: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
The weight ratio 80:15:1 of Exceed 1018CA, LD100AC, SL07PP, all the other are identical with embodiment 1 in the resin of hot sealing layer.
The heat sealing strength 75/15mm of present embodiment gained composite package film.
By the heat-sealing result of embodiment 2-8, along with the growth of Exceed 1018CA addition, heat seal strength rises gradually, and trend linearly.
Embodiment 9: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Remove that the weight ratio of A-4085S and LL1002X75 is 7:3 in the resin of corona layer, all the other are identical with embodiment 1.
The technical indicator of present embodiment gained composite package film is following:
Hot strength: horizontal 350Mpa, vertical 480 Mpa; Elongation at break: horizontal 100%, vertical 80%; Tearing strength: horizontal 125N/mm, vertically 210N/mm; Peel strength: 5.0N/15mm, heat sealing strength: 79N/15mm, anti-pendulum impact energy: 1.0J, coefficient of friction: 0.32; Puncture performance 1.6N/ μ m; Freeze proof cold tolerance 70%; Anti-121 ℃, boiling in 60 minutes, peel strength 5.0N/15mm after the boiling; A steam penetrating capacity 0.15g/! ㎡ 24h), OTR oxygen transmission rate 0.21cc/ (m224h).
Embodiment 10: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Remove that the weight ratio of A-4085S and LL1002X75 is 6:4 in the resin of corona layer, all the other are identical with embodiment 1.
The anti-pendulum impact energy of present embodiment gained composite package film: 0.8J; Freeze proof cold tolerance 67%.
Embodiment 11: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Remove that the weight ratio of A-4085S and LL1002X75 is 5:5 in the resin of corona layer, all the other are identical with embodiment 1.
The anti-pendulum impact energy of present embodiment gained composite package film: 0.7J; Freeze proof cold tolerance 65%.
Embodiment 12: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Remove that the weight ratio of A-4085S and LL1002X75 is 4:6 in the resin of corona layer, all the other are identical with embodiment 1.
The anti-pendulum impact energy of present embodiment gained composite package film: 0.5J; Freeze proof cold tolerance 63%.
By the result of embodiment 9-12, the weight ratio of A-4085S and LL1002X75 between 4:6～6:4 the time anti-pendulum impact energy rise comparatively fast, do not change basically between 7:3～8:2, freeze proof cold tolerance descends.
Embodiment 13: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Remove and extrude in the operation, resin temperature is outside 210 ℃, and all the other are identical with embodiment 1.
The technical indicator of present embodiment gained composite package film is following:
Hot strength: horizontal 350Mpa, vertical 480 Mpa; Tearing strength: horizontal 125N/mm, vertically 210N/mm; Anti-pendulum impact energy: 0.6J, coefficient of friction: 0.26; A steam penetrating capacity 0.15g/! ㎡ 24h), OTR oxygen transmission rate 0.21cc/ (m224h).
Embodiment 14: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Remove and extrude in the operation, resin temperature is outside 220 ℃, and all the other are identical with embodiment 1.
The technical indicator of present embodiment gained composite package film is following:
Hot strength: horizontal 330Mpa, vertical 450 Mpa; Tearing strength: horizontal 120N/mm, vertically 230N/mm; Anti-pendulum impact energy: 0.8J, coefficient of friction: 0.28; Steam penetrating capacity 0.14 g/! ㎡ 24h), OTR oxygen transmission rate 0.21cc/ (m224h).
Embodiment 15: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Remove and extrude in the operation, resin temperature is outside 230 ℃, and all the other are identical with embodiment 1.
The technical indicator of present embodiment gained composite package film is following:
Hot strength: horizontal 314Mpa, vertical 440 Mpa; Tearing strength: horizontal 116N/mm, vertically 235N/mm; Anti-pendulum impact energy: 1.0J, coefficient of friction: 0.30; A steam penetrating capacity 0.15g/! ㎡ 24h), OTR oxygen transmission rate 0.20cc/ (m224h).
Embodiment 16: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Remove and extrude in the operation, resin temperature is outside 240 ℃, and all the other are identical with embodiment 1.
The technical indicator of present embodiment gained composite package film is following:
Hot strength: horizontal 308Mpa, vertical 425 Mpa; Tearing strength: horizontal 110N/mm, vertically 239N/mm; Anti-pendulum impact energy: 1.0J, coefficient of friction: 0.31; A steam penetrating capacity 0.16g/! ㎡ 24h), OTR oxygen transmission rate 0.20cc/ (m224h).
Embodiment 17: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Remove and extrude in the operation, resin temperature is outside 250 ℃, and all the other are identical with embodiment 1.
The technical indicator of present embodiment gained composite package film is following:
Hot strength: horizontal 300Mpa, vertically 410Mpa; Tearing strength: horizontal 105N/mm, vertically 244N/mm; Anti-pendulum impact energy: 0.8J, coefficient of friction: 0.32; A steam penetrating capacity 0.16g/! ㎡ 24h), OTR oxygen transmission rate 0.20cc/ (m224h).
By the result of embodiment 13-17, when resin temperature improved, the smooth property decline of film: coefficient of friction improved; Fracture tensile strength descends; Impact strength improves, but after bringing up to peak value, can descend with the continuation rising impact strength of resin temperature; Machine direction tear improves, and cross direction tear strength descends.So extrusion temperature is confirmed as 210～250 ℃.
Embodiment 18: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Except that the PE film thickness was 80 μ m, all the other were identical with embodiment 1.
The technical indicator of present embodiment gained composite package film is following:
Hot strength: horizontal 300Mpa, vertical 410 Mpa; Elongation at break: horizontal 100%, vertical 80%; Tearing strength: horizontal 125N/mm, vertically 210N/mm; Anti-pendulum impact energy: 0.8J, coefficient of friction: 0.28; Puncture performance 1.6N/ μ m; A steam penetrating capacity 0.15g/! ㎡ 24h), OTR oxygen transmission rate 0.21cc/ (m224h).
Embodiment 19: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Except that the PE film thickness was 85 μ m, all the other were identical with embodiment 1.
The technical indicator of present embodiment gained composite package film is following:
Hot strength: horizontal 330Mpa, vertical 450 Mpa; Elongation at break: horizontal 100%, vertical 80%; Tearing strength: horizontal 125N/mm, vertically 210N/mm; Anti-pendulum impact energy: 0.9J, coefficient of friction: 0.30; Puncture performance 1.6N/ μ m; Steam penetrating capacity 0.14 g/! ㎡ 24h), OTR oxygen transmission rate 0.21cc/ (m224h).
Embodiment 20: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Except that the PE film thickness was 90 μ m, all the other were identical with embodiment 1.
The technical indicator of present embodiment gained composite package film is following:
Hot strength: horizontal 350Mpa, vertical 480 Mpa; Elongation at break: horizontal 100%, vertical 80%; Tearing strength: horizontal 125N/mm, vertically 210N/mm; Anti-pendulum impact energy: 1.1J, coefficient of friction: 0.28; Puncture performance 1.6N/ μ m; Steam penetrating capacity 0.14 g/! ㎡ 24h), OTR oxygen transmission rate 0.21cc/ (m224h).
By embodiment 18-20 result, when film thickness improves, the raising of the smooth property of film, coefficient of friction descends; Hot strength improves; Impact strength improves comparatively remarkable.Therefore the thickness of PE film is preferably 80 μ m～90 μ m.
Embodiment 21: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Except that hauling speed was 20m/min, all the other were identical with embodiment 1.
The technical indicator of present embodiment gained composite package film is following:
Hot strength: horizontal 350Mpa, vertical 480 Mpa; Anti-pendulum impact energy: 1.1J, coefficient of friction: 0.32; A steam penetrating capacity 0.15g/! ㎡ 24h), OTR oxygen transmission rate 0.21cc/ (m224h).
Embodiment 22: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Except that hauling speed was 25m/min, all the other were identical with embodiment 1.
The technical indicator of present embodiment gained composite package film is following:
Hot strength: horizontal 350Mpa, vertical 480 Mpa; Anti-pendulum impact energy: 1.1J, coefficient of friction: 0.30; A steam penetrating capacity 0.14g/! ㎡ 24h), OTR oxygen transmission rate 0.21cc/ (m224h).
Embodiment 23: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Except that hauling speed was 30m/min, all the other were identical with embodiment 1.
The technical indicator of present embodiment gained composite package film is following:
Hot strength: horizontal 350Mpa, vertical 480 Mpa; Anti-pendulum impact energy: 1.0J, coefficient of friction: 0.28; A steam penetrating capacity 0.14g/! ㎡ 24h), OTR oxygen transmission rate 0.21cc/ (m224h).
Embodiment 24: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Except that hauling speed was 35m/min, all the other were identical with embodiment 1.
The technical indicator of present embodiment gained composite package film is following:
Hot strength: horizontal 350Mpa, vertical 480 Mpa; Anti-pendulum impact energy: 0.9J, coefficient of friction: 0.28; A steam penetrating capacity 0.14g/! ㎡ 24h), OTR oxygen transmission rate 0.21cc/ (m224h).
Embodiment 25: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
Except that hauling speed was 40m/min, all the other were identical with embodiment 1.
The technical indicator of present embodiment gained composite package film is following:
Hot strength: horizontal 350Mpa, vertical 480 Mpa; Anti-pendulum impact energy: 0.9J, coefficient of friction: 0.26; A steam penetrating capacity 0.14g/! ㎡ 24h), OTR oxygen transmission rate 0.21cc/ (m224h).
By the result of embodiment 21-25, when hauling speed improves, the smooth property raising of film, coefficient of friction descends; Hot strength does not have significant change; Impact strength slightly descends.Therefore hauling speed is 20～40m/min.
Embodiment 26: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
The weight ratio 50:50:1 of Exceed 1018CA, LD100AC, SL07PP, all the other are identical with embodiment 1 in the resin of hot sealing layer.
The heat sealing strength 44/15mm of present embodiment gained composite package film, coefficient of friction are 0.36.
Embodiment 27: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
The weight ratio 60:30:2 of Exceed 1018CA, LD100AC, SL07PP, all the other are identical with embodiment 1 in the resin of hot sealing layer.
The heat sealing strength 53/15mm of present embodiment gained composite package film, coefficient of friction are 0.25.
Embodiment 28: but this heating using microwave composite package film adopts following proportioning raw materials and preparation method.
The weight ratio 75:40:1.5 of Exceed 1018CA, LD100AC, SL07PP, all the other are identical with embodiment 1 in the resin of hot sealing layer.
The heat sealing strength 51/15mm of present embodiment gained composite package film, coefficient of friction are 0.29.
Claims (10)
1. but heating using microwave composite package film is characterized in that: it from inside to outside is followed successively by by polyethylene film, biaxial tension plating silicon nylon membrane and biaxial tension nylon membrane and is composited; Described polyethylene film is made up of corona layer and hot sealing layer; Described hot sealing layer is made up of metallocene PE, low density polyethylene (LDPE) and slipping agent, and the weight ratio of said metallocene PE, low density polyethylene (LDPE) and slipping agent is 50～85:15～50:1～2.
2. but heating using microwave composite package film according to claim 1; It is characterized in that: the metallocene PE that adopts the property index: fusing point is 82～84 ℃; Elongation at break is greater than 500%; Yield tensile strength is greater than 8Mpa, and fracture tensile strength is greater than 50Mpa, and dart impact strength is greater than 140g;
Adopt the low density polyethylene (LDPE) of property index: fusing point is 100～105 ℃, and elongation at break is greater than 350%, and dart impact strength is greater than 75g.
3. but heating using microwave composite package film according to claim 2 is characterized in that: the thickness of said polyethylene film is 80～90 microns.
4. but heating using microwave composite package film according to claim 1 is characterized in that: described corona layer is made up of the ethylene elastomer of 40～80% weight and the LLDPE of 20～60% weight.
5. but heating using microwave composite package film according to claim 4 is characterized in that: the ethylene elastomer that adopts the property index: fusing point is 65～66 ℃, and brittle temperature is less than-70 ℃;
Adopt the LLDPE of property index: fusing point is 120～125 ℃, and elongation at break is greater than 420%, and fracture tensile strength is greater than 45Mpa.
6. but according to described any one heating using microwave composite package film of claim 1-5, it is characterized in that, adopt the biaxial tension plating silicon nylon membrane of property index: hot strength: laterally>=200Mpa, vertically>=180Mpa; Elongation at break: laterally>=180%, vertically>=80%; Percent thermal shrinkage≤3%; Coefficient of friction≤0.80; Mist degree≤1.5%; Glossiness>=85%; Inner face wetting tension>=52mN/m; Steam penetrating capacity is lower than 0.4g/ (m
224h), OTR oxygen transmission rate is lower than 0.4cc/ (m
224h).
7. but according to described any one heating using microwave composite package film of claim 1-5, it is characterized in that, adopt the biaxial tension nylon membrane of property index: hot strength: laterally>=200Mpa, vertically>=180Mpa; Elongation at break: laterally>=180%, vertically>=80%; Percent thermal shrinkage≤3%; Coefficient of friction≤0.80; Mist degree≤1.5%; Glossiness>=85%; Inner face wetting tension>=52mN/m.
8. but the preparation method of described any one heating using microwave composite package film of claim 1-7 is characterized in that, this method step is: raw material co-extrusion modling in double-deck extruder of (1) said corona layer and hot sealing layer, process polyethylene film;
(2) the polyethylene film cooling and shaping of extrusion molding;
(3) polyethylene film behind the cooling and shaping and biaxial tension plating silicon nylon membrane and biaxial tension nylon membrane sticks with glue agent and carries out compoundly can obtaining described composite package film.
9. but the preparation method of heating using microwave composite package film according to claim 8 is characterized in that: the extrusion temperature in the said step (1) is 210～260 ℃.
10. but the preparation method of heating using microwave composite package film according to claim 8 is characterized in that: the hauling speed 20～40m/min in the said step (2) during cooling and shaping.
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| CN103507363A (en) * | 2013-10-20 | 2014-01-15 | 江苏申凯包装高新技术股份有限公司 | Drop-resistant composite packaging bag |
| CN103834091A (en) * | 2014-03-04 | 2014-06-04 | 芜湖市艾德森自动化设备有限公司 | Capacitor metalized film adopting linear low-density polyethylene as base body and preparation method of capacitor metalized film |
| US20140174785A1 (en) * | 2012-12-21 | 2014-06-26 | Nexans | Rov cable insulation system |
| CN104085159A (en) * | 2014-06-30 | 2014-10-08 | 海宁市产品质量监督检验所 | One-way linear easily-torn composite membrane |
| US20150291342A1 (en) * | 2012-11-30 | 2015-10-15 | Curwood, Inc. | Flexible self-sealing self-venting hot-fill container |
| CN105856776A (en) * | 2016-03-31 | 2016-08-17 | 湖北德威包装科技有限公司 | Puncture-resistant high-temperature fresh-keeping cooking film and preparation method thereof |
| CN105947422A (en) * | 2016-04-28 | 2016-09-21 | 青岛日之容塑料制品有限公司 | Packaging bag for microwave oven and preparation method of packaging bag |
| CN108068421A (en) * | 2017-12-26 | 2018-05-25 | 常州市华健药用包装材料股份有限公司 | Medicinal high-speed packaging polyethylene film |
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