CN107344439B - A kind of high intensity five-layer co-squeezing composite membrane and preparation method thereof - Google Patents
A kind of high intensity five-layer co-squeezing composite membrane and preparation method thereof Download PDFInfo
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- CN107344439B CN107344439B CN201710316380.3A CN201710316380A CN107344439B CN 107344439 B CN107344439 B CN 107344439B CN 201710316380 A CN201710316380 A CN 201710316380A CN 107344439 B CN107344439 B CN 107344439B
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- 239000012528 membrane Substances 0.000 title claims abstract description 16
- 239000002131 composite material Substances 0.000 title claims abstract description 11
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 30
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 27
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 27
- 239000004743 Polypropylene Substances 0.000 claims abstract description 21
- BLDFSDCBQJUWFG-UHFFFAOYSA-N 2-(methylamino)-1,2-diphenylethanol Chemical compound C=1C=CC=CC=1C(NC)C(O)C1=CC=CC=C1 BLDFSDCBQJUWFG-UHFFFAOYSA-N 0.000 claims abstract description 18
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 18
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 18
- 229920001179 medium density polyethylene Polymers 0.000 claims abstract description 18
- 239000004701 medium-density polyethylene Substances 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 239000010410 layer Substances 0.000 claims description 81
- 238000001125 extrusion Methods 0.000 claims description 21
- 238000002844 melting Methods 0.000 claims description 14
- 230000008018 melting Effects 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 8
- 239000012790 adhesive layer Substances 0.000 claims description 6
- 239000000823 artificial membrane Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000004615 ingredient Substances 0.000 claims description 5
- 239000002985 plastic film Substances 0.000 claims description 5
- 229920006255 plastic film Polymers 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 229920000426 Microplastic Polymers 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 13
- 238000003475 lamination Methods 0.000 abstract description 3
- 238000004806 packaging method and process Methods 0.000 abstract description 3
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 62
- 238000002156 mixing Methods 0.000 description 8
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 239000010409 thin film Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 1
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- 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
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- 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
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/582—Tearability
- B32B2307/5825—Tear resistant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to composite packaging technical field of membrane, a kind of high-intensitive five-layer co-squeezing composite membrane is provided, and the preparation method of this coextrusion-lamination film, including by LDPE, MDPE, LLDPE, PP, PA6, PA10 raw particles combination coextrusion blow is combined, wherein first layer is LDPE, MDPE and LLDPE are mixed by weight 1:1:1~1:1:2, the second layer is that LLDPE:PP is mixed by weight 5:1~5:2, third layer is that PA6:PA10 is mixed by weight 5:4~5:5, 4th layer mixes for LLDPE:PP by weight 5:1~5:2, layer 5 is LDPE, MDPE and LLDPE are mixed by weight 1:1:1~1:1:2；Preparation method uses one-step method coextrusion forming process, the five-layer co-squeezing composite membrane of preparation is good with whole uniformity, intensity is high, good toughness, it can be widely used for air column bag production field, while formula material used has many advantages, such as that environmentally protective, recyclable, the decomposition period is short.
Description
Technical field
The invention belongs to composite packaging technical field of membrane, specifically, be a kind of high-intensitive five-layer co-squeezing composite membrane, and
The preparation method of this coextrusion-lamination film.
Background technique
Since 1970s, with the development of coextru-lamination forming technique and co-extrusion equipment, traditional packing timber
Material is just gradually replaced plastic package material, and especially multilayer materials develop especially rapid, material property in recent years
Be able to satisfy resistance to boiling, it is resistance to baking and low temperature resistant freezing standard, certain kinds have trapping (oxygen, carbon dioxide), shading,
Moisture-proof equal safeguard functions achieve considerable hair so that multilayer copolymerized compound membrane gains great popularity in packaging industry and food service industry
Exhibition, market prospects are also had an optimistic view of extensively.
Existing five-layer co-squeezing film generallys use the materials such as PP, PE, EVOH and is process through casting technique, casting technique by
Process equipment, material property, external environment, technological parameter etc. are affected, and production stability is poor, lead to the co-extrusion produced
Film-strength, tear resistance, presentation quality are poor.And the composite co-extruding film of the materials such as metal aluminum foil, brown paper is used, due to material
The not integration of material, causes molding film entirety uniformity undesirable, and local strength is poor, and toughness is bad, and high production cost,
Waste recovery is difficult, causes larger harm to environmental protection.The patent No. " 201510008519.9 " describes a kind of five layers of polyamide and is total to
Composite membrane and preparation method thereof is squeezed, use is organic-silicon-modified, can be used for the fields such as solar panels, insulator, but preparation method
It is squeezed out respectively using more extruders, technique is cumbersome, production efficiency is low.Therefore, existing co-extrusion membrane material and production technology be all
Need to be further improved.
Utility model content
It is an object of the invention to overcome deficiency in the prior art, a kind of high intensity, high tenacity, whole uniformity are provided
Good, five-layer co-squeezing film of environmental protection and preparation method thereof, and it is widely used in the five-layer co-squeezing film of air column bag production.
To achieve the goals above, technical scheme is as follows:
A kind of high intensity five-layer co-squeezing film, including amounted to by LDPE, MDPE, LLDPE, PP, PA6, PA10 raw particles group
Extrusion blow modeling is combined, and wherein first layer is that LDPE, MDPE and LLDPE are mixed by weight 1:1:1~1:1:2, and second
Layer be LLDPE:PP mixed by weight 5:1~5:2, third layer be PA6:PA10 by weight 5:4~5:5 mix and
At the 4th layer mixes for LLDPE:PP by weight 5:1~5:2, and layer 5 LDPE, MDPE and LLDPE are by weight
1:1:1~1:1:2 is mixed.
The invention also discloses the preparation method of above-mentioned high-intensitive five-layer co-squeezing film, using one-step method coextrusion forming process,
Specifically comprise the following steps:
(1) LDPE, MDPE, LLDPE, PP, PA6, PA10 raw particles are claimed by every layer of different weight proportion requirement
Amount is then placed in mechanical batch mixer and is uniformly mixed, and releases stand-by.
(2) above-mentioned uniformly mixed ingredient particle is put to around inflation film manufacturing machine respectively, wherein the PA raw particles of third layer
It need to place in dry environments, be denaturalized with absorb-free, co-extrusion film is by every composition of layer requirement automatic feed respectively, the modeling of the first layer formula
Material particle is located at bottommost, is upwards in turn two, three, four, five layers, is blow molded into film upwards through Screw Extrusion and heating melting,
Wherein second, four layer is adhesive layer, bonds one, three and three, five layers respectively.
(3) raw particles of high temperature co-extrusion melting are blow molded into cylindric plastic film through die head high pressure upwards, have just blown out
Film need to keep upright position through the supreme whirler of artificial membrane, and with collapser control film.
(4) bilayer film in homogeneous thickness is processed by whirler, whirler hauling speed is less than 20m/min, then through leading
Bilayer film is led into separation machine to roller, bilayer film is separated into two layers of A, B.
(5) A, B layer film separated is cut into the film of one fixed width through cutter according to production size requirements, used
Paper cylinder is core, and A, B film are coiled into the co-extrusion film finished product of regular length and weight respectively.
As an improvement of the present invention, LDPE, MDPE, LLDPE, PP, PA6, PA10 raw material grain in the step (1)
Sub- purity is all larger than 99.5%.
As an improvement of the present invention, the mechanical batch mixer in the step (1) is funneling circulating current batch mixer,
Mixing mixing time is 3~10 minutes.
As an improvement of the present invention, 1000 mesh talcum powder are added in the first layer formula in the step (2), are added
Ratio is 0.5%~1.5%.
As an improvement of the present invention, the raw particles high temperature co-extrusion melting temperature in the step (2) be 200~
250℃。
As an improvement of the present invention, the collapser in the step (3) is located above membrane film head at 3~3.5m.
As an improvement of the present invention, the upper whirler revolving speed in the step (3) is 15~20m/min, A, B layers thin
Film thickness is greater than 100 μm.
As an improvement of the present invention, the upper whirler in the step (3) is equipped with cooling wind apparatus, cooling wind temperature
It is 10~20 DEG C.
As an improvement of the present invention, the cutter in the step (5) is packaged type, and has displacement sensor,
Trimming size can be accurately controlled.
The present invention overcomes existing product defects, improve the quality of production of five-layer co-squeezing film from technique first, use
Funneling circulating current batch mixer replaces original manually or mechanically stirring rod mixing, and it is uniform to substantially increase raw particles mixing
Property, while reducing mixing time.Followed by it is formulated: all PE plastic pellets of the first layer formula, using low-density, middle density
With three kinds of polyethylene of linea low density, improve film seal effect, while be added 1000 mesh talcum powder, to postorder film be divided into A,
It gets for B layers and eliminates cohesive force effect well；The second layer and the 4th layer use LLDPE, PP for adhesive layer raw material, instead of original
PVC, PP formula, improve film cohesiveness energy, reduce environmental pollution, and improving film splitting intensity to the later period also has crucial work
With；Two kinds of nylon plastic(s)s proportions of intermediate film formulation PA6 and PA10, improve the integrally stretching intensity of film.By matching above
The five-layer co-squeezing film that side, technique are produced is good with whole uniformity, intensity is high, good toughness, can be widely used for air column bag production
Field, while formula material used has many advantages, such as that environmentally protective, recyclable, the decomposition period is short.
Specific embodiment
High intensity five-layer co-squeezing film of the invention combines co-extrusion using LDPE, MDPE, LLDPE, PP, PA6, PA10 raw particles
Blow molding is combined, and first layer LDPE, MDPE and LLDPE are mixed by weight 1:1:1~1:1:2, and the second layer is
LLDPE:PP is mixed by weight 5:1~5:2, and third layer is that PA6:PA10 is mixed by weight 5:4~5:5, the
Four layers mix for LLDPE:PP by weight 5:1~5:2, and layer 5 LDPE, MDPE and LLDPE are by weight 1:1:1
~1:1:2 is mixed, and the five-layer co-squeezing film has that high intensity, high tenacity, entirety uniformity be good, the feature performance benefits such as environmentally friendly.
Below by specific embodiment, present invention is further described in detail:
Embodiment 1:
A) LDPE, MDPE, LLDPE, PP, PA6, PA10 raw particles by purity greater than 99.5% press every layer of different weight
Proportion requirement is weighed, and mixing 3 minutes in funneling circulating current batch mixer are then respectively put into, and is released stand-by；
B) above-mentioned uniformly mixed ingredient particle is put to around inflation film manufacturing machine respectively, wherein the PA raw particles of third layer need
It places in dry environments, is denaturalized with absorb-free, co-extrusion film is by every composition of layer requirement automatic feed respectively, the first layer formula plastics
The talcum powder that 1000 mesh ratios are 0.5% is added in particle, and is located at bottommost, is upwards in turn two, three, four, five layers, through spiral shell
Bar squeezes out and heating melting is blow molded into film upwards, and melting temperature is 200 DEG C, wherein second, four layer is adhesive layer, bonds respectively
One, three and three, five layers；
C) raw particles of high temperature co-extrusion melting are blow molded into cylindric plastic film through die head high pressure upwards, and what is just blown out is thin
Film need to keep vertical position through the supreme whirler of artificial membrane, and with the collapser control film being located above membrane film head at 3m
It sets；
D) bilayer film in homogeneous thickness is processed by whirler, whirler hauling speed is 20m/min, then through guide roller
Bilayer film is led into separation machine, bilayer film is separated into two layers of A, B, every layer film is with a thickness of 105 μm；
E) A, B layer film separated is cut into centainly according to production size requirements through the cutter with displacement sensor
The film of width uses paper cylinder for core, and A, B film are coiled into the co-extrusion film finished product of regular length and weight respectively.
Embodiment 2:
A) LDPE, MDPE, LLDPE, PP, PA6, PA10 raw particles by purity greater than 99.5% press every layer of different weight
Proportion requirement is weighed, and mixing 5 minutes in funneling circulating current batch mixer are then respectively put into, and is released stand-by；
B) above-mentioned uniformly mixed ingredient particle is put to around inflation film manufacturing machine respectively, wherein the PA raw particles of third layer need
It places in dry environments, is denaturalized with absorb-free, co-extrusion film is by every composition of layer requirement automatic feed respectively, the first layer formula plastics
The talcum powder that 1000 mesh ratios are 1.0% is added in particle, and is located at bottommost, is upwards in turn two, three, four, five layers, through spiral shell
Bar squeezes out and heating melting is blow molded into film upwards, and melting temperature is 220 DEG C, wherein second, four layer is adhesive layer, bonds respectively
One, three and three, five layers；
C) raw particles of high temperature co-extrusion melting are blow molded into cylindric plastic film through die head high pressure upwards, and what is just blown out is thin
Film need to keep vertical position through the supreme whirler of artificial membrane, and with the collapser control film being located above membrane film head at 3.2m
It sets；
D) bilayer film in homogeneous thickness is processed by whirler, whirler hauling speed is 18m/min, then through guide roller
Bilayer film is led into separation machine, bilayer film is separated into two layers of A, B, every layer film is with a thickness of 120 μm；
E) with above-described embodiment 1.
Embodiment 3:
A) LDPE, MDPE, LLDPE, PP, PA6, PA10 raw particles by purity greater than 99.5% press every layer of different weight
Proportion requirement is weighed, and mixing 10 minutes in funneling circulating current batch mixer are then respectively put into, and is released stand-by；
B) above-mentioned uniformly mixed ingredient particle is put to around inflation film manufacturing machine respectively, wherein the PA raw particles of third layer need
It places in dry environments, is denaturalized with absorb-free, co-extrusion film is by every composition of layer requirement automatic feed respectively, the first layer formula plastics
The talcum powder that 1000 mesh ratios are 1.5% is added in particle, and is located at bottommost, is upwards in turn two, three, four, five layers, through spiral shell
Bar squeezes out and heating melting is blow molded into film upwards, and melting temperature is 250 DEG C, wherein second, four layer is adhesive layer, bonds respectively
One, three and three, five layers；
C) raw particles of high temperature co-extrusion melting are blow molded into cylindric plastic film through die head high pressure upwards, and what is just blown out is thin
Film need to keep vertical position through the supreme whirler of artificial membrane, and with the collapser control film being located above membrane film head at 3.5m
It sets；
D) bilayer film in homogeneous thickness is processed by whirler, whirler hauling speed is 15m/min, then through guide roller
Bilayer film is led into separation machine, bilayer film is separated into two layers of A, B, every layer film is with a thickness of 150 μm；
E) with above-described embodiment 1.
Finally it should be noted that listed above is only 3 kinds of specific embodiments of the invention.Obviously, the present invention is not
It is limited to above embodiments, there can also be many variations.Those skilled in the art can be straight from present disclosure
All deformations for connecing export or associating, are considered as protection scope of the present invention.
Claims (1)
1. a kind of high intensity five-layer co-squeezing composite membrane, including combined by LDPE, MDPE, LLDPE, PP, PA6, PA10 raw particles
Coextrusion blow is combined, which is characterized in that wherein first layer is LDPE, MDPE and LLDPE by weight 1:1:1~1:1:2
It mixes, the second layer is that LLDPE:PP is mixed by weight 5:1~5:2, and third layer is PA6:PA10 by weight 5:4
~5:5 is mixed, and the 4th layer mixes by weight 5:1~5:2 for LLDPE:PP, layer 5 LDPE, MDPE and
LLDPE is mixed by weight 1:1:1~1:1:2；The preparation method of the high intensity five-layer co-squeezing composite membrane successively includes
Following steps:
(1) LDPE, MDPE, LLDPE, PP, PA6, PA10 raw particles are weighed by every layer of different weight proportion requirement, so
After be put into mechanical batch mixer and be uniformly mixed, release stand-by；
(2) above-mentioned uniformly mixed ingredient particle is put to around inflation film manufacturing machine respectively, wherein the PA raw particles of third layer need to be put
It sets in dry environments, is denaturalized with absorb-free, co-extrusion film is by every composition of layer requirement automatic feed respectively, the first layer formula plastic pellet
Son is located at bottommost, is upwards in turn two, three, four, five layers, is blow molded into film upwards through Screw Extrusion and heating melting, wherein
The second, four layers are adhesive layer, bond one, three and three, five layers respectively；
(3) raw particles of high temperature co-extrusion melting are blow molded into cylindric plastic film through die head high pressure upwards, the film just blown out
Upright position need to be kept through the supreme whirler of artificial membrane, and with collapser control film；
(4) bilayer film in homogeneous thickness is processed by whirler, whirler hauling speed is less than 20m/min, then through guide roller
Bilayer film is led into separation machine, bilayer film is separated into two layers of A, B；
(5) A, B layer film separated is cut into the film of one fixed width through cutter, using papery according to production size requirements
Cylinder is core, and A, B film are coiled into the co-extrusion film finished product of regular length and weight respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710316380.3A CN107344439B (en) | 2017-05-08 | 2017-05-08 | A kind of high intensity five-layer co-squeezing composite membrane and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710316380.3A CN107344439B (en) | 2017-05-08 | 2017-05-08 | A kind of high intensity five-layer co-squeezing composite membrane and preparation method thereof |
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| Publication Number | Publication Date |
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| CN107344439A CN107344439A (en) | 2017-11-14 |
| CN107344439B true CN107344439B (en) | 2019-09-20 |
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|---|---|---|---|---|
| CN1073131C (en) * | 1995-08-15 | 2001-10-17 | 三井化学株式会社 | Adhesive polypropylene resin composite and multiple-layer laminated body using said resin composite |
| US20030129428A1 (en) * | 1996-06-10 | 2003-07-10 | Mingliang Lawrence Tsai | Multilayer polyamide film structures |
| US6623866B2 (en) * | 2001-04-04 | 2003-09-23 | Exxonmobil Oil Corporation | Multilayer films including anti-block |
| JP4471562B2 (en) * | 2002-09-26 | 2010-06-02 | 株式会社クレハ | Deep drawing packaging method |
| US20150033669A1 (en) * | 2013-07-31 | 2015-02-05 | Pregis Innovative Packaging, Inc. | Multilayer film with enhanced interlayer adhesion |
| CN104669755A (en) * | 2013-11-28 | 2015-06-03 | 天津海晶塑料制品有限公司 | Novel film for making buffer gas column bag |
| CN104476753B (en) * | 2014-11-25 | 2017-01-25 | 朝阳佛瑞达科技有限公司 | Production equipment and preparation method of multilayer co-extrusion high-barrier film |
| CN105729955A (en) * | 2014-12-10 | 2016-07-06 | 东莞奇妙包装有限公司 | A multilayer-structure membrane |
-
2017
- 2017-05-08 CN CN201710316380.3A patent/CN107344439B/en active Active
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| Publication number | Publication date |
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| CN107344439A (en) | 2017-11-14 |
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