CN103042731A - Packaging container - Google Patents
Packaging container Download PDFInfo
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- CN103042731A CN103042731A CN2012105940993A CN201210594099A CN103042731A CN 103042731 A CN103042731 A CN 103042731A CN 2012105940993 A CN2012105940993 A CN 2012105940993A CN 201210594099 A CN201210594099 A CN 201210594099A CN 103042731 A CN103042731 A CN 103042731A
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- density polyethylene
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- 238000004806 packaging method and process Methods 0.000 title abstract description 6
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 99
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 99
- 229920001526 metallocene linear low density polyethylene Polymers 0.000 claims abstract description 12
- 238000012856 packing Methods 0.000 claims description 41
- 229920001169 thermoplastic Polymers 0.000 claims description 41
- 239000004416 thermosoftening plastic Substances 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 35
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 33
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 33
- 230000004888 barrier function Effects 0.000 claims description 24
- 239000003054 catalyst Substances 0.000 claims description 23
- 238000006116 polymerization reaction Methods 0.000 claims description 23
- 239000000853 adhesive Substances 0.000 claims description 22
- 230000001070 adhesive effect Effects 0.000 claims description 22
- 239000011230 binding agent Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 13
- 238000007789 sealing Methods 0.000 abstract description 5
- 235000021056 liquid food Nutrition 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 239000012815 thermoplastic material Substances 0.000 abstract 3
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 96
- 235000013305 food Nutrition 0.000 description 13
- 239000007788 liquid Substances 0.000 description 13
- 239000000203 mixture Substances 0.000 description 11
- 238000010030 laminating Methods 0.000 description 9
- 238000003475 lamination Methods 0.000 description 8
- 239000005022 packaging material Substances 0.000 description 8
- 238000001125 extrusion Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- 238000012797 qualification Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000005030 aluminium foil Substances 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 239000012792 core layer Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000113 differential scanning calorimetry Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 235000021485 packed food Nutrition 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 235000013618 yogurt Nutrition 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Laminated Bodies (AREA)
- Wrappers (AREA)
Abstract
The invention provides a packaging container which is characterized by comprising a thermoplastic material outermost layer, a sandwich layer, a thermoplastic material intermediate layer, a blocking layer, an adhesion agent layer and a thermoplastic material innermost layer from the outside in, wherein the adhesion agent layer comprises metallocene linear low density polyethylene (MLLDPE) and low density polyethylene (LDPE); the MLLDPE comprises the following parameters: average density of 0.88 g/cm<3> to 0.925 g/cm<3>, melt flow index (190 DEG C, 2.16kg) of 5 g/10 min to 20 g/10 min, peak melting point of 85 DEG C to 130 DEG C and expansion ratio of 1.2 to 1.8; and the LDPE comprises the following parameters: average density of 0.90 g/cm<3> to 0.925 g/cm<3>, melt flow index (190 DEG C, 2.16kg) of 5 g/10 min to 20 g/10 min, peak melting point of 85 DEG C to 110 DEG C and expansion ratio of 1.2 to 1.8. The longitudinal sealing part can be heat-sealed during the process of preparing the packaging container, the sealing strength is good, the prepared packaging container has high percent of pass, and the shelf life of liquid food is long.
Description
Technical field
The present invention relates to a kind of packing container, relate in particular to a kind of packing container for packaging liquid food.
Background technology
At present, the disposable disposal type packing container that is used for liquid food, brick is arranged, square, triangle, cross section is hexagonal octahedral bodily form, the shapes such as pillow-like, usually the laminate wrapping material of making these packing containers comprises the successively thermoplastic outermost layer of lamination, sandwich layer, the thermoplastic intermediate layer, the barrier layer, adhesive phase and thermoplastic innermost layer also have the low density polyethylene (LDPE) (LDPE) that adopts high-pressure process to produce/printer's ink layer/paper (fiber) base layer/LDPE/ aluminium foil AL/LDPE/LDPE, LDPE/ printer's ink layer/paper base layer/LDPE/LDPE, printer's ink layer/LDPE/ paper base layer/LDPE/LDPE, laminate wrapping material such as LDPE/ printer's ink layer/paper base layer/sandwich constructions such as LDPE/ aluminium/polyester (PET).The food liquid that these packing containers can be packed has fresh milk, yoghurt, fruit juice etc.
Core material commonly used has paper, brown paper or hardboard etc., barrier material commonly used has aluminium foil, metal/inorganic oxide film, ethylene-vinyl alcohol copolymer (EVOH), nylon etc., thermoplastic outermost layer commonly used, the intermediate layer, the low density polyethylene (LDPE) (LDPE) that the useful high-pressure process of the material of innermost layer is produced, LLDPE (LLDPE), by the thermoplastics such as ethyleneα-olefincopolymer (mLLDPE) of metalloscene catalyst catalytic polymerization, adhesive commonly used has polyurethane binder, Polyester Polyurethane Adhesive, the polyether-polyurethane adhesive, acrylic adhesive, polyester binder, polyamide binder, the polyvinyl acetate ester adhesive, epoxy adhesive, rubber adhesive etc.
The effect of each layer of packaging material is: the thermoplastic outermost layer can stop effectively that extraneous moisture, pollution or other magazines enter in the packaging material, and forming in the packing container process with thermoplastic innermost layer longitudinal sealing at laminate wrapping material is that laminate wrapping material forms tubulose; Sandwich layer can the supporting package container; Thermoplastic intermediate layer and barrier layer can prevent effectively that food liquid from entering into sandwich layer, and starvation, sunlight make not light leak, air tight of packing container simultaneously, particularly do not leak oxygen, guarantee that the food liquid taste does not run off; The thermoplastic innermost layer directly contacts with food liquid, prevents that food liquid is to the infiltration of other each layers of packaging material when guaranteeing the food liquid quality; Adhesive phase adds the adhesion strength between high containment and the thermoplastic innermost layer.
Fig. 1 shows a kind of common method of making laminate wrapping material, machine guiding core layer coiled material 1 moves ahead by the pressure roller of punching press platform 2, process hole and the required impression of FOLD AND PACK material of the required usefulness of packing container opening device, continue to guide the sandwich layer coiled material 11 of perforate forward, arrive laminating bench 5, extruder 3 squeezes out thermoplastic intermediate layer coiled material and guides it to and reaches laminating bench 5 herein, barrier layer coiled material 4 is directed to laminating bench 5 simultaneously, 5 pairs of three-layer coil materials of laminating bench carry out lamination, in its roll gap center core layer, thermoplastic intermediate layer and barrier layer are pressed together, and the thermoplastic intermediate layer is between sandwich layer and barrier layer, become thus laminate 111. guide layer pressing plates 111 and arrive next stage laminating bench 6, herein by coextruding and coat the opposite side with thermoplastic innermost layer 7 paint laminates 111 barrier layers, in the roll gap of laminating bench 6, laminate 111 and thermoplastic innermost layer 7 are pressed together, form thus the inboard laminated material 1111 that is coated with the thermoplastic innermost layer, by extrusion coated thermoplastic outermost layer in the i.e. outside coating of sandwich layer opposite side, so far obtain the used laminate wrapping material of packing container afterwards.Certainly, the outermost coating of thermoplastic might not be placed on final step to be carried out, and also can according to circumstances apply in suitable before step.
The packing container of the laminate wrapping material Production and Packaging food liquid that available said method is made.In order to prevent that packaged food liquid from suffering secondary pollution, the production process of whole packing container is all carried out under aseptic condition: first laminate wrapping material is shaped to cylindric, and at the vertical sealing-in formation of side tube, then in the horizontal sealing-in of tube one end, form top or the bottom of packing container, fill afterwards required food liquid, at last the residue of tube is held horizontal sealing-in, make bottom or the top of packing container.By cutting transverse packed zone, can form single independently packing container, and with these independently packing container deliver in the final folding and shaped device and be converted into net shape, such as brick type or other shapes.Laminate wrapping material is in forming the packing container process, and the bond strength between thermoplastic innermost layer and the barrier layer affects the qualification rate of packing container and guaranteeing the quality the time of food liquid.
Chinese invention patent application prospectus CN1337914A discloses a kind of paper container package material, at least the constituting layer that comprises has the thermoplastic outermost layer, the papery base layer, the thermoplastic intermediate layer, the barrier layer, adhesive phase and thermoplastic innermost layer are also pressed the said sequence lamination with each constituting layer, be characterised in that: the thermoplastic innermost layer comprises the LLDPE with narrow molecular weight distribution at least, has following performance parameter: averag density 0.900-0.915,88-103 ℃ of peak value fusing point, melt flow index 5-20, expansion ratio (SR) 1.4-1.6 and bed thickness 20-50 micron, adhesive phase also adopt the material identical with aforementioned innermost layer to make.These packaging material are so that be easy to pouring package packing container and rapid heat-seal, obtain the container of more firm stronger sealing, this material can be used for realizing being independent of in-built food temperature excellent sealing and thereby keep the ability that in-built product never degenerates and guarantees the quality, but, this packaging material are in the extruding layer compression technology of manufacture process, serious necking phenomenon can occur in molten condition during from the die head film extrusion of extruder in adhesive phase, be that the extrusion die dual-side can shrink to the centre, edge thickness is uneven even the phenomenon of breach occurs, the both sides, barrier layer can not be capped or cladding thickness inhomogeneous, in order to prevent that flaw from appearring in the finished product packing material, three kinds of solutions are arranged usually, a kind of is to do the die head of extruder wider than the width on papery base layer and barrier layer, the defective part in extrusion die both sides is not covered on the barrier layer, and cooling forming excises again in follow-up lamination operation; Another kind be with the width on papery base layer and barrier layer do wider, extrude lamination after, the flaw part of excision packaging material both sides obtains qualified packaging material; Moreover reduce necking phenomenon by increase adhesive phase thickness and damage.These three kinds of solutions all need extruder die head than wide many of the width on papery base layer and barrier layer, need more heat heating and melting thermoplastic, cause energy waste, and after lamination is finished, also will excise the flaw part of packaging material both sides, cause waste of raw materials.
Summary of the invention
Technical problem to be solved by this invention provides a kind of packing container, combination firmly between barrier layer and the innermost layer, the qualification rate of the packing container of making is high, the time of guaranteeing the quality of food liquid is long, and it is in the laminate wrapping material process of making packing container, serious necking phenomenon can not occur when extruding lamination adhesive layer, can not cause the serious energy and waste of raw materials.
For solving the problems of the technologies described above, the technical scheme that the present invention takes is: a kind of packing container, comprise from outside to inside thermoplastic outermost layer, sandwich layer, thermoplastic intermediate layer, barrier layer, adhesive phase and thermoplastic innermost layer, wherein, described adhesive phase comprises LLDPE (MLLDPE) and the low density polyethylene (LDPE) (LDPE) of metalloscene catalyst polymerization; The LLDPE of described metalloscene catalyst polymerization (mLLDPE) has following parameter: averag density be 0.88g/cm3～0.925g/cm3, melt flow index (190 ℃, 2.16kg) for 5g/10min～20g/10min, peak value fusing point be that 85 ℃～130 ℃, expansion ratio are 1.2～1.8; Described low density polyethylene (LDPE) (LDPE) has following parameter: averag density is 0.90g/cm
3～0.925g/cm
3, melt flow index (190 ℃, 2.16kg) is that 5g/10min～20g/10min, peak value fusing point are that 85 ℃～110 ℃, expansion ratio are 1.2～1.8.
Among the present invention, melt flow index is measured according to 190 ℃, the condition determination of 2.16kg in the GB/T3682-2000 melt flow index assay method.Expansion ratio be illustrated in GB/T3682-2000 melt flow index assay method under the identical condition determination (namely 190 ℃, 2.16kg), the cross sectional dimensions ratio of the cross sectional dimensions of the extrudate of measured depanning and die orifice.The peak value fusing point is obtained by differential scanning calorimetry, if two or more peak value refers to first peak value.Low density polyethylene (LDPE) (LDPE) can be LLDPE (LLDPE), also can be non-linear low density polyethylene (LDPE), just can satisfy requirement of the present invention as long as have above-mentioned performance parameter.
As a kind of improvement of technique scheme, wherein, the LLDPE of described metalloscene catalyst polymerization (mLLDPE) has following parameter: averag density is 0.90g/cm
3～0.915g/cm
3, melt flow index (190 ℃, 2.16kg) is that 5g/10min～20g/10min, peak value fusing point are that 88 ℃～120 ℃, expansion ratio are 1.4～1.6.
As further improvement in the technical proposal, wherein, the averag density of the LLDPE of described metalloscene catalyst polymerization (mLLDPE) is 0.905g/cm
3～0.910g/cm
3, melt flow index (190 ℃, 2.16kg) is that 5g/10min～20g/10min, peak value fusing point are that 93 ℃～103 ℃, expansion ratio are 1.4～1.6.
As further improvement in the technical proposal, wherein, described low density polyethylene (LDPE) (LDPE) has following parameter: averag density is 0.910g/cm
3～0.92g/cm
3, melt flow index (190 ℃, 2.16kg) is that 5g/10min～20g/10min, peak value fusing point are that 85 ℃～110 ℃, expansion ratio are 1.4～1.6.
As further improvement in the technical proposal, wherein, the averag density of described low density polyethylene (LDPE) (LDPE) is 0.915g/cm
3～0.920g/cm
3, melt flow index (190 ℃, 2.16kg) is that 5g/10min～20g/10min, peak value fusing point are that 93 ℃～103 ℃, expansion ratio are 1.4～1.6.
As further improvement in the technical proposal, wherein, the weight percentage (wt) of the LLDPE of described metalloscene catalyst polymerization (mLLDPE) is 50%～80%, and the weight percentage (wt) of described low density polyethylene (LDPE) (LDPE) is 20%～50%.
As further improvement in the technical proposal, wherein, the weight percentage (wt) of the LLDPE of described metalloscene catalyst polymerization (mLLDPE) is 60%～75%, and the weight percentage (wt) of described low density polyethylene (LDPE) (LDPE) is 25%～40%.
As further improvement in the technical proposal, wherein, the weight percentage (wt) of the LLDPE of described metalloscene catalyst polymerization (mLLDPE) is 70%, and the weight percentage (wt) of described low density polyethylene (LDPE) (LDPE) is 30%.
The present invention compared with prior art, because the adhesive phase of packing container has adopted LLDPE (MLLDPE) and the low density polyethylene (LDPE) (LDPE) with the polymerization of particular characteristic parameter metalloscene catalyst, in the extruding layer compression technology of the laminate wrapping material process of making packing container, adhesive phase has obtained largely reducing in the necking phenomenon of molten condition during from the die head film extrusion of extruder, the energy and waste of raw materials phenomenon have largely inhibition, combination firmly between barrier layer and the innermost layer, the qualification rate of packing container is high, and the time of guaranteeing the quality of food liquid is long.
Figure of description
Fig. 1 is a kind of schematic diagram of making the laminate wrapping material method.
Fig. 2 is the schematic perspective view of a kind of packing container of the present invention.
Fig. 3 is the sidewall cross sectional representation of a kind of packing container of the present invention.
The specific embodiment
As shown in Figures 2 and 3, a kind of packing container of the present invention comprises thermoplastic outermost layer 21, sandwich layer 22, thermoplastic intermediate layer 23, barrier layer 24, adhesive phase 25 and thermoplastic innermost layer 26 from outside to inside successively.
Then, the LLDPE of blend metalloscene catalyst polymerization (mLLDPE) and low density polyethylene (LDPE) obtain blend again, wherein, the LLDPE of metalloscene catalyst polymerization (mLLDPE) has following parameter: averag density be 0.910g/cm3, melt flow index (190 ℃, 2.16kg) for 13g/10min, peak value fusing point be that 124 ℃, expansion ratio are 1.5; Low density polyethylene (LDPE) (LDPE) has following parameter: averag density is 0.918g/cm
3, melt flow index (190 ℃, 2.16kg) is that 7g/10min, peak value fusing point are that 107 ℃, expansion ratio are 1.6, be pressed onto take bed thickness as 22 microns blend extruding layer on the adhesive phase 25 of this multilayer material and form thermoplastic innermost layer 26.
When the LLDPE (mLLDPE) of blend metalloscene catalyst polymerization and low density polyethylene (LDPE) obtain blend, can adopt the particle Direct Uniform with both materials to mix, also can adopt bi-material mixed after again melting stir, carry out granulation again and obtain the blend particle, the mixture homogeneity of rear a kind of mode is a kind of better than front.
In conjunction with firmly, after pouring in liquid food on the bottle placer, the packing container qualification rate of making is high between the laminate wrapping material barrier layer 24 that obtains and the thermoplastic innermost layer 26, and the time of guaranteeing the quality of food liquid is long.
Table 1:
Claims (10)
1. packing container, comprise from outside to inside thermoplastic outermost layer (21), sandwich layer (22), thermoplastic intermediate layer (23), barrier layer (24), adhesive phase (25) and thermoplastic innermost layer (26), it is characterized in that: described thermoplastic binder material layer (25) comprises LLDPE (MLLDPE) and the low density polyethylene (LDPE) (LDPE) of metalloscene catalyst polymerization;
The LLDPE of described metalloscene catalyst polymerization (mLLDPE) has following parameter: averag density is 0.88g/cm
3～0.925g/cm
3, melt flow index (190 ℃, 2.16kg) is that 5g/10min～20g/10min, peak value fusing point are that 85 ℃～130 ℃, expansion ratio are 1.2～1.8;
Described low density polyethylene (LDPE) (LDPE) has following parameter: averag density is 0.90g/cm
3～0.925g/cm
3, melt flow index (190 ℃, 2.16kg) is that 5g/10min～20g/10min, peak value fusing point are that 85 ℃～110 ℃, expansion ratio are 1.2～1.8.
2. a kind of packing container according to claim 1, it is characterized in that: the LLDPE of described metalloscene catalyst polymerization (mLLDPE) has following parameter: averag density is 0.90g/cm
3～0.915g/cm
3, melt flow index (190 ℃, 2.16kg) is that 5g/10min～20g/10min, peak value fusing point are that 88 ℃～120 ℃, expansion ratio are 1.4～1.6.
3. a kind of packing container according to claim 1, it is characterized in that: the averag density of the LLDPE of described metalloscene catalyst polymerization (mLLDPE) is 0.905g/cm
3～0.910g/cm
3, melt flow index (190 ℃, 2.16kg) is that 5g/10min～20g/10min, peak value fusing point are that 93 ℃～103 ℃, expansion ratio are 1.4～1.6.
4. a kind of packing container according to claim 1, it is characterized in that: described low density polyethylene (LDPE) (LDPE) has following parameter: averag density is 0.910g/cm
3～0.92g/cm
3, melt flow index (190 ℃, 2.16kg) is that 5g/10min～20g/10min, peak value fusing point are that 85 ℃～110 ℃, expansion ratio are 1.4～1.6.
5. a kind of packing container according to claim 4, it is characterized in that: the averag density of described low density polyethylene (LDPE) (LDPE) is 0.915g/cm
3～0.920g/cm
3, melt flow index (190 ℃, 2.16kg) is that 5g/10min～20g/10min, peak value fusing point are that 93 ℃～103 ℃, expansion ratio are 1.4～1.6.
6. a kind of packing container according to claim 1, it is characterized in that: described low density polyethylene (LDPE) (LDPE) is LLDPE (LLDPE).
7. a kind of packing container according to claim 1, it is characterized in that: described low density polyethylene (LDPE) (LDPE) is non-linear low density polyethylene (LDPE).
8. each described a kind of packing container in 7 according to claim 1, it is characterized in that: the weight percentage (wt) of the LLDPE of described metalloscene catalyst polymerization (mLLDPE) is 50%～80%, and the weight percentage (wt) of described low density polyethylene (LDPE) (LDPE) is 20%～50%.
9. each described a kind of packing container in 7 according to claim 1, it is characterized in that: the weight percentage (wt) of the LLDPE of described metalloscene catalyst polymerization (mLLDPE) is 60%～75%, and the weight percentage (wt) of described low density polyethylene (LDPE) (LDPE) is 25%～40%.
10. each described a kind of packing container in 7 according to claim 1, it is characterized in that: the weight percentage (wt) of the LLDPE of described metalloscene catalyst polymerization (mLLDPE) is 70%, and the weight percentage (wt) of described low density polyethylene (LDPE) (LDPE) is 30%.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510156958.4A CN104760385A (en) | 2012-12-31 | 2012-12-31 | Packaging container |
| CN201510156962.0A CN104760361A (en) | 2012-12-31 | 2012-12-31 | Packaging container |
| CN201510156965.4A CN104760338A (en) | 2012-12-31 | 2012-12-31 | Packaging container |
| CN201210594099.3A CN103042731B (en) | 2012-12-31 | 2012-12-31 | Packaging container |
| CN201510156964.XA CN104772932A (en) | 2012-12-31 | 2012-12-31 | Packaging container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210594099.3A CN103042731B (en) | 2012-12-31 | 2012-12-31 | Packaging container |
Related Child Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510156964.XA Division CN104772932A (en) | 2012-12-31 | 2012-12-31 | Packaging container |
| CN201510156962.0A Division CN104760361A (en) | 2012-12-31 | 2012-12-31 | Packaging container |
| CN201510156965.4A Division CN104760338A (en) | 2012-12-31 | 2012-12-31 | Packaging container |
| CN201510156958.4A Division CN104760385A (en) | 2012-12-31 | 2012-12-31 | Packaging container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103042731A true CN103042731A (en) | 2013-04-17 |
| CN103042731B CN103042731B (en) | 2015-04-08 |
Family
ID=48055691
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210594099.3A Ceased CN103042731B (en) | 2012-12-31 | 2012-12-31 | Packaging container |
| CN201510156958.4A Withdrawn CN104760385A (en) | 2012-12-31 | 2012-12-31 | Packaging container |
| CN201510156965.4A Withdrawn CN104760338A (en) | 2012-12-31 | 2012-12-31 | Packaging container |
| CN201510156964.XA Pending CN104772932A (en) | 2012-12-31 | 2012-12-31 | Packaging container |
| CN201510156962.0A Withdrawn CN104760361A (en) | 2012-12-31 | 2012-12-31 | Packaging container |
Family Applications After (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510156958.4A Withdrawn CN104760385A (en) | 2012-12-31 | 2012-12-31 | Packaging container |
| CN201510156965.4A Withdrawn CN104760338A (en) | 2012-12-31 | 2012-12-31 | Packaging container |
| CN201510156964.XA Pending CN104772932A (en) | 2012-12-31 | 2012-12-31 | Packaging container |
| CN201510156962.0A Withdrawn CN104760361A (en) | 2012-12-31 | 2012-12-31 | Packaging container |
Country Status (1)
| Country | Link |
|---|---|
| CN (5) | CN103042731B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106926530A (en) * | 2017-04-19 | 2017-07-07 | 大连朗旭环境科技有限公司 | A kind of Membrane of Tensile Buildings storage tank |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110293734A (en) * | 2019-06-27 | 2019-10-01 | 厦门三玺包装材料有限公司 | A kind of formula and its technique increasing the aluminum extruded compound interlaminar strength of paper |
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| WO2003095200A1 (en) * | 2002-05-07 | 2003-11-20 | Tetra Laval Holdings & Finance S.A. | Packaging laminate, method for its manufacturing and packaging container manufactured from the packaging laminate |
| US6974612B1 (en) * | 1999-01-27 | 2005-12-13 | Tetra Laval Holdings & Finance S.A. | Laminated packaging material for paper container |
| WO2006091310A1 (en) * | 2005-02-21 | 2006-08-31 | Exxonmobil Chemical Patents Inc. | Multi-layer polyethylene films |
| WO2007032719A1 (en) * | 2005-09-15 | 2007-03-22 | Tetra Laval Holdings & Finance S.A. | A sealing strip as well as a packaging container including such a strip |
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|---|---|---|---|---|
| JP2002205359A (en) * | 2000-11-09 | 2002-07-23 | Nihon Tetra Pak Kk | Laminate for packaging material |
| CN102416745B (en) * | 2011-08-05 | 2015-08-12 | 大连瑞贤达塑胶有限公司 | A kind of plastic substrate film of packaging for foodstuff and processing technology thereof |
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2012
- 2012-12-31 CN CN201210594099.3A patent/CN103042731B/en not_active Ceased
- 2012-12-31 CN CN201510156958.4A patent/CN104760385A/en not_active Withdrawn
- 2012-12-31 CN CN201510156965.4A patent/CN104760338A/en not_active Withdrawn
- 2012-12-31 CN CN201510156964.XA patent/CN104772932A/en active Pending
- 2012-12-31 CN CN201510156962.0A patent/CN104760361A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6974612B1 (en) * | 1999-01-27 | 2005-12-13 | Tetra Laval Holdings & Finance S.A. | Laminated packaging material for paper container |
| WO2003095200A1 (en) * | 2002-05-07 | 2003-11-20 | Tetra Laval Holdings & Finance S.A. | Packaging laminate, method for its manufacturing and packaging container manufactured from the packaging laminate |
| WO2006091310A1 (en) * | 2005-02-21 | 2006-08-31 | Exxonmobil Chemical Patents Inc. | Multi-layer polyethylene films |
| WO2007032719A1 (en) * | 2005-09-15 | 2007-03-22 | Tetra Laval Holdings & Finance S.A. | A sealing strip as well as a packaging container including such a strip |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106926530A (en) * | 2017-04-19 | 2017-07-07 | 大连朗旭环境科技有限公司 | A kind of Membrane of Tensile Buildings storage tank |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104760361A (en) | 2015-07-08 |
| CN104760338A (en) | 2015-07-08 |
| CN104772932A (en) | 2015-07-15 |
| CN103042731B (en) | 2015-04-08 |
| CN104760385A (en) | 2015-07-08 |
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