CN1724254A - High resistively nine-layer co-extrusion-blown moulding film and its preparation process - Google Patents
High resistively nine-layer co-extrusion-blown moulding film and its preparation process Download PDFInfo
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- CN1724254A CN1724254A CN 200510040827 CN200510040827A CN1724254A CN 1724254 A CN1724254 A CN 1724254A CN 200510040827 CN200510040827 CN 200510040827 CN 200510040827 A CN200510040827 A CN 200510040827A CN 1724254 A CN1724254 A CN 1724254A
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Abstract
A high-isolation 9-layer plastic film with 25-300 microns in thickness and high mechanical and optical performance has an external surface layer and a thermally sealed bottom layer and is prepared through extruding out 9 film layers, overlapping via a single die, and co-extruding out while blow moulding.
Description
Technical field:
The present invention relates to a kind of inflation film.Be specifically related to a kind of high resistively nine-layer co-extrusion-blown moulding film and preparation method thereof.Belong to field of packaging material.
Background technology:
Before the present invention made, current packaging had single thin film and plural layers (maximum seven layers) with film, and tool has the following disadvantages separately:
For single thin film, make multi-layer compound film as need, need to adopt modes such as the compound or solvent of dry types is compound to realize that operation is many a plurality of single thin films, the therefore fringe cost height that is caused, the pollution to film and environment simultaneously is big, and sanitation performance is not so good.
Go out laminated film for similar maximum seven-layer co-extrusion, from a structural point, functional layer still is less, moreover each stratum proportion do bigger, the large percentage of the material that under " mass excess " situation, costs an arm and a leg, cost of material height.Exist simultaneously because of the curling phenomenon of the different films that cause of film surfaces externally and internally material.
For gas and water resistance separating performance a little less than, mechanical properties in films and optical property also a little less than.
Summary of the invention:
The objective of the invention is to overcome above-mentioned deficiency, high resistively nine-layer co-extrusion-blown moulding film of a kind of barrier, mechanical property and optical property that can improve film and preparation method thereof is provided.
The object of the present invention is achieved like this: a kind of high resistively nine-layer co-extrusion-blown moulding film, it is characterized in that it is 25～300 microns nine layers of coextrusion composite constructions: the superiors (I) are the film outer surface layer, the second layer (H), the 3rd layer (G), the 4th layer (F), layer 5 (E), layer 6 (D), layer 7 (C), the 8th layer (B), orlop (A) is a hot sealing layer
The described the superiors (I), its composition is PE or PP, PA, PET, PS material.Its function is for boiling hot, compound, the surface printing of envelope etc.
The described second layer (H), the 3rd layer (G), the 4th layer (F), layer 5 (E), layer 6 (D), layer 7 (C), the 8th layer (B), its composition is PE or PP, PA, EVOH, EVA, PET material, or, select corresponding jointing material for use according to the selected material difference of adjacent two layers.Its function is that the bad vicinity of bonding compatibility two-layerly, anti-is curled, resistance is wet, resistance oxygen, buffering, enhancing, deep drawn, auxiliary intercept etc.
Described orlop (A), it consists of PP or PE, EVA, ionic resin.Content, resistance are wet, compound in order to attach for its function, heat-sealing etc.
High resistively nine-layer co-extrusion-blown moulding film of the present invention, it is the nine stacked structures that add about 160 microns:
The described the superiors (I), it consists of the PA material.Its function for improve optical property, strengthen mechanical property, improve the surface printing ability, improve the deep drawn ability, high temperature resistant envelope is scalded etc.
The described second layer (H), it consists of jointing material.Its function is the PA of bonding I layer and the PE material of G layer, makes the bad material coextrusion composite molding of these two kinds of compatibilities.
Described the 3rd layer (G), it consists of one or more PE materials.Its function for anti-curl, resistance is wet, buffering, enhancing etc.
Described the 4th layer (F), it consists of jointing material.
Described layer 5 (E) and layer 7 (C), it consists of the PA6-66 material.Its function for strengthen mechanical property, improve the deep drawn ability, as the secondary barrier layer of gases such as blocking oxygen.
Described layer 6 (D), it consists of main barrier material EVOH.Its function is gases such as blocking oxygen.
Described the 8th layer (B), it consists of jointing material.
Described orlop (A), it consists of PE or materials such as EVA or ionic resin.Content, resistance are wet in order to attach for its function, heat-sealing etc.
High resistively nine-layer co-extrusion-blown moulding film of the present invention, it is the nine stacked structures that add about 80 microns:
The described the superiors (I), it consists of PA or PET material.Its function for improve optical property, strengthen mechanical property, improve the deep drawn ability, high temperature resistant envelope is scalded etc.
The described second layer (H), it consists of jointing material.Its function is the PA/PET of bonding I layer and the PE material of G layer, makes the bad material coextrusion composite molding of these two kinds of compatibilities.
Described the 3rd layer (G), it consists of one or more PE materials.Its function for anti-curl, resistance is wet, buffering, enhancing etc.
Described the 4th layer (F), it consists of jointing material.
Described layer 5 (E) and layer 7 (C), it consists of the PA6 material.Its function for strengthen mechanical property, as the secondary barrier layer of gases such as blocking oxygen.
Described layer 6 (D), it consists of main barrier material EVOH.Its function is gases such as blocking oxygen.
Described the 8th layer (B), it consists of jointing material.
Described orlop (A), it consists of PE or PP or EVA or ionic resin material.Content, resistance are wet in order to attach for its function, heat-sealing etc.
High resistively nine-layer co-extrusion-blown moulding film of the present invention, it is 70 microns the nine stacked structures that add:
The described the superiors (I), it consists of PP or HDPE material.Its function is for improving optical property, strengthening mechanical property etc.
The described second layer (H), it consists of jointing material.Its function is the PP/HDPE of bonding I layer and the PE material of G layer, makes the bad material coextrusion composite molding of these two kinds of compatibilities.
Described the 3rd layer (G), it consists of one or more PE materials.Its function for anti-curl, resistance is wet, buffering, enhancing etc.
Described the 4th layer (F), the jointing material that it consists of.
Described layer 5 (E) and layer 7 (C), it consists of the PA6 material.Its function for strengthen mechanical property, as the secondary barrier layer of gases such as blocking oxygen.
Described layer 6 (D), it consists of main barrier material EVOH.Its function is gases such as blocking oxygen.
Described the 8th layer (B), it consists of jointing material.
Described orlop (A), it consists of PE or materials such as EVA or ionic resin.Content, resistance are wet in order to attach for its function, heat-sealing etc.
High resistively nine-layer co-extrusion-blown moulding film of the present invention, it is 100 microns the nine stacked structures that add:
The described the superiors (I), it consists of PP or PA material.Its function for improve optical property, strengthen mechanical property, improve the surface printing ability, improve the deep drawn ability, high temperature resistant envelope is scalded etc.
The described second layer (H), it consists of jointing material.Its function is the PP/PA of bonding I layer and the PE material of G layer, makes the bad material coextrusion composite molding of these two kinds of compatibilities.
Described the 3rd layer (G), it consists of main barrier material EVOH.Its function is gases such as blocking oxygen.
Described the 4th layer (F) and layer 6 (D), the jointing material that it consists of.
Described layer 5 (E), it consists of one or more PE materials.Its function is wet for resistance, buffering, enhancing etc.
Described layer 7 (C), it consists of the PA material.Its function for strengthen mechanical property, improve the deep drawn performance, as the secondary barrier layer of gases such as blocking oxygen.
Described the 8th layer (B), it consists of jointing material.
Described orlop (A), it consists of PE or materials such as PP or EVA or ionic resin.Content, resistance are wet in order to attach for its function, heat-sealing etc.
High resistively nine-layer co-extrusion-blown moulding film of the present invention, it is the nine stacked structures that add about 190 microns:
The described the superiors (I), it consists of PP or PA material.Its function for improve optical property, strengthen mechanical property, high temperature resistant envelope is scalded etc.
The described second layer (H), it consists of jointing material.Its function is the PP/PA of bonding I layer and the PE material of G layer, makes the bad material coextrusion composite molding of these two kinds of compatibilities.
Described the 3rd layer (G), it consists of one or more PE materials.Its function for anti-curl, resistance is wet, buffering, enhancing etc.
Described the 4th layer (F), the jointing material that it consists of.
Described layer 5 (E), layer 6 (D) and layer 7 (C), it consists of the PA material.Its function for strengthen mechanical property, improve the deep drawn performance, as the secondary barrier layer of gases such as blocking oxygen.
Described the 8th layer (B), it consists of jointing material.
Described orlop (A), it consists of PE or materials such as EVA or ionic resin.Content, resistance are wet in order to attach for its function, heat-sealing etc.
High resistively nine-layer co-extrusion-blown moulding film of the present invention, it is the nine stacked structures that add about 190 microns:
The described the superiors (I), it consists of materials such as PP or PA.Its function for improve optical property, strengthen mechanical property, high temperature resistant envelope is scalded etc.
The described second layer (H), it consists of jointing material.Its function is the IPA of bonding I layer and the PE material of G layer, makes the bad material coextrusion composite molding of these two kinds of compatibilities.
Described the 3rd layer (G), the 4th layer (F), it consists of one or more PE materials.Its function for anti-curl, resistance is wet, buffering, enhancing etc.
Described layer 5 (E), the jointing material that it consists of.
Described layer 6 (D), it consists of main barrier material EVOH.Its function is gases such as blocking oxygen.
Described layer 7 (C), it consists of the PA material.Its function for strengthen mechanical property, improve the deep drawn performance, as the secondary barrier layer of gases such as blocking oxygen.
Described the 8th layer (B), it consists of jointing material.
Described orlop (A), it consists of PE or materials such as EVA or ionic resin.Content, resistance are wet in order to attach for its function, heat-sealing etc.
High resistively nine-layer co-extrusion-blown moulding film of the present invention, described PE material has LDPE, HDPE, LLDPE, MPE.
The above each layer all can add an amount of slipping agent, antitack agent, antistatic additive, the color masterbatch additive is a kind of or several.
The preparation method of high resistively nine-layer co-extrusion-blown moulding film of the present invention, it is through nine layers of coextrusion blow molding process, and the nine layer composite construction of moulding thickness between 25～300 microns, nine layer materials are extruded by nine extruders respectively, through nine layers of laminated film of same mould stack coextrusion one-shot forming, its concrete preparation method is as follows:
The superiors (I) by an extruder, after primary raw material resin and various additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, clamp-on in the runner of the superiors (I) of mould;
The second layer (H) by an extruder, under 160～280 ℃, with resin plasticizing, is clamp-oned in the runner of the second layer (H) of mould;
The 3rd layer (G) by an extruder, after primary raw material resin and various additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, clamp-ons in the runner of the 3rd layer (G) of mould;
The 4th layer (F) by an extruder, under 160～280 ℃, with resin plasticizing, clamp-ons in the runner of the 4th layer (F) of mould;
Layer 5 (E) and layer 7 (C), respectively by an extruder, after primary raw material resin and various additive evenly stirred in extruder front end mixed-hopper, under 220～280 ℃, with resin plasticizing, clamp-on in the runner of the layer 5 (E) of mould and layer 7 (C);
Layer 6 (D) by an extruder, under 160～280 ℃, with resin plasticizing, is clamp-oned in the runner of layer 6 (D) of mould;
The 8th layer (B) by an extruder, under 160～280 ℃, with resin plasticizing, clamp-ons in the runner of the 8th layer (B) of mould;
Orlop (A) by an extruder, after primary raw material resin and various additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, is clamp-oned in the runner of orlop (A) of mould;
To by air-cooling device, be shaped to film bubble pipe through the nine stacked works that add of die head co-extrusion modling,
Import the collapser device, film bubble pipe is flattened, make it to become double-deck flat film.
If needed, can pass through corona treatment plant,, make it the moistened surface tension force that reaches suitable by the sided corona treatment of suitable power.
With winder it is rolled into the tubular film or the single flat film of 25～300 micron thickness on demand.
High resistively nine-layer co-extrusion-blown moulding film of the present invention has following several advantages:
Than the single thin film of various same materials, operation has been saved in high resistively nine-layer co-extrusion-blown moulding film one-shot forming of the present invention, and the fringe cost that is therefore caused.Simultaneously sanitation performance is good, has avoided compound as dry type, solvent is compound etc. to the pollution of film and environment.
Go out laminated film than similar seven-layer co-extrusion, high resistively nine-layer co-extrusion-blown moulding film of the present invention from a structural point, has had more two functional layers, just means that also film can increase by two functions relatively.Moreover each stratum proportion is than seven layers of can do littler, helps being reduced in the ratio of material of costing an arm and a leg under " mass excess " situation, thus the conservation cost.As the 3rd layer, have bigger, more resilient adjustment space, more help controlling cost; Be more conducive to simultaneously solve because of the curling phenomenon of the different films that cause of film surfaces externally and internally material.
Contain materials such as EVOH, PE or PP in the film of the present invention, for gas and glassware for drinking water higher barrier property is arranged, contain the PA material simultaneously, film has stronger mechanical property, can add various additives simultaneously to improve the various performances of film.
The present invention's nine layer materials are extruded by nine extruders respectively, through nine layers of laminated film of same mould stack coextrusion one-shot forming, various additives can be mixed in the layers of material simultaneously, extrude jointly.
Therefore, invention can improve barrier, mechanical property and the optical property of film.
Description of drawings:
Fig. 1 is a high resistively nine-layer co-extrusion-blown moulding film schematic diagram of the present invention.
The specific embodiment:
Below several examples for the preparation 25 ~ 300 microns high resistively nine-layer co-extrusion-blown moulding films.Nine layer materials are extruded by nine extruders respectively, through nine layers of laminated film of same mould stack coextrusion one-shot forming.
Embodiment 1:
Prepare 160 microns left and right sides high resistively nine-layer co-extrusion-blown moulding films, referring to Fig. 1.
The superiors (I) by an extruder, with primary raw material resin PA and additive, after evenly stirring in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, clamp-on in the runner of the superiors (I) of mould;
The second layer (H) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, is clamp-oned in the runner of the second layer (H) of mould;
The 3rd layer (G) by an extruder, after primary raw material resin PE and additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, clamp-ons in the runner of the 3rd layer (G) of mould;
The 4th layer (F) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, clamp-ons in the runner of the 4th layer (F) of mould;
Layer 5 (E) and layer 7 (C), respectively by an extruder, after primary raw material resin PA6-66 and additive evenly stirred in extruder front end mixed-hopper, under 220～280 ℃, with resin plasticizing, clamp-on in the runner of the layer 5 (E) of mould and layer 7 (C);
Layer 6 (D) by an extruder, under 160～280 ℃, with EVOH resin plasticizing, is clamp-oned in the runner of layer 6 (D) of mould;
The 8th layer (B) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, clamp-ons in the runner of the 8th layer (B) of mould;
Orlop (A) by an extruder, after primary raw material resin PE or EVA or ionic resin and additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, is clamp-oned in the runner of orlop (A) of mould;
To by air-cooling device, be shaped to film bubble pipe through the nine stacked works that add of die head co-extrusion modling,
Import the collapser device, film bubble pipe is flattened, make it to become double-deck flat film.
If needed, can pass through corona treatment plant,, make it the moistened surface tension force that reaches suitable by the sided corona treatment of suitable power.
With winder it is rolled into the tubular film or the single flat film of 160 micron thickness on demand.
Embodiment 2:
Prepare 80 microns left and right sides high resistively nine-layer co-extrusion-blown moulding films
The superiors (I) by an extruder, after primary raw material resin PA or PET and additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, clamp-on in the runner of the superiors (I) of mould;
The second layer (H) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, is clamp-oned in the runner of the second layer (H) of mould;
The 3rd layer (G) is by an extruder, after primary raw material resin LDPE, HDPE and additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with resin plasticizing, clamp-on in the runner of the 3rd layer (G) of mould, wherein the weight ratio of LDPE and HDPE is 1: 2.Additive can add and can not add herein.
The 4th layer (F) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, clamp-ons in the runner of the 4th layer (F) of mould;
Layer 5 (E) and layer 7 (C), respectively by an extruder, after primary raw material resin PA6 and additive evenly stirred in extruder front end mixed-hopper, under 220～280 ℃, with resin plasticizing, clamp-on in the runner of the layer 5 (E) of mould and layer 7 (C);
Layer 6 (D) by an extruder, under 160～280 ℃, with EVOH resin plasticizing, is clamp-oned in the runner of layer 6 (D) of mould;
The 8th layer (B) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, clamp-ons in the runner of the 8th layer (B) of mould;
Orlop (A) by an extruder, after primary raw material resin PE or PP or EVA or ionic resin and additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, is clamp-oned in the runner of orlop (A) of mould;
All the other are with example 1.
Embodiment 3:
Prepare 70 microns left and right sides high resistively nine-layer co-extrusion-blown moulding films
The superiors (I) by an extruder, after primary raw material resin PP or HDPE and additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, clamp-on in the runner of the superiors (I) of mould;
The second layer (H) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, is clamp-oned in the runner of the second layer (H) of mould;
The 3rd layer (G) is by an extruder, after primary raw material resin HDPE, LLDPE and additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with resin plasticizing, clamp-on in the runner of the 3rd layer (G) of mould, wherein the weight ratio of HDPE and LLDPE is 1: 3;
The 4th layer (F) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, clamp-ons in the runner of the 4th layer (F) of mould;
Layer 5 (E) and layer 7 (C), respectively by an extruder, after primary raw material resin PA6 and additive evenly stirred in extruder front end mixed-hopper, under 220～280 ℃, with resin plasticizing, clamp-on in the runner of the layer 5 (E) of mould and layer 7 (C);
Layer 6 (D) by an extruder, under 160～280 ℃, with EVOH resin plasticizing, is clamp-oned in the runner of layer 6 (D) of mould;
The 8th layer (B) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, clamp-ons in the runner of the 8th layer (B) of mould;
Orlop (A) by an extruder, after primary raw material resin PE or EVA or ionic resin and additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, is clamp-oned in the runner of orlop (A) of mould;
All the other are with example 1.
Embodiment 4:
Prepare 100 microns left and right sides high resistively nine-layer co-extrusion-blown moulding films
The superiors (I) by an extruder, after primary raw material resin PP or PA and additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, clamp-on in the runner of the superiors (I) of mould;
The second layer (H) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, is clamp-oned in the runner of the second layer (H) of mould;
The 3rd layer (G) by an extruder, after main barrier material EVOH and additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, clamp-ons in the runner of the 3rd layer (G) of mould;
The 4th layer (F) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, clamp-ons in the runner of the 4th layer (F) of mould;
Layer 5 (E) by an extruder, after primary raw material resin LDPE and additive evenly stirred in extruder front end mixed-hopper, under 220～280 ℃, with the resin plasticizing, is clamp-oned in the runner of the layer 5 (E) of mould and layer 7 (C);
Layer 6 (D) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, is clamp-oned in the runner of layer 6 (D) of mould;
Layer 7 (C) by an extruder, after primary raw material resin PA and additive evenly stirred in extruder front end mixed-hopper, under 220～280 ℃, with the resin plasticizing, is clamp-oned in the runner of the layer 5 (E) of mould and layer 7 (C);
The 8th layer (B) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, clamp-ons in the runner of the 8th layer (B) of mould;
Orlop (A) by an extruder, after primary raw material resin PE or PP or EVA or ionic resin and additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, is clamp-oned in the runner of orlop (A) of mould;
All the other are with example 1.
Embodiment 5:
Prepare 190 microns left and right sides high resistively nine-layer co-extrusion-blown moulding films
The superiors (I) by an extruder, after primary raw material resin PP or PA and additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, clamp-on in the runner of the superiors (I) of mould;
The second layer (H) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, is clamp-oned in the runner of the second layer (H) of mould;
The 3rd layer (G) is by an extruder, after primary raw material resin LDPE, LLDP and additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with resin plasticizing, clamp-on in the runner of the 3rd layer (G) of mould, wherein the weight ratio of LDPE and LLDPE is 1: 2;
The 4th layer (F) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, clamp-ons in the runner of the 4th layer (F) of mould;
Layer 5 (E) and layer 7 (C), respectively by an extruder, after primary raw material resin PA and additive evenly stirred in extruder front end mixed-hopper, under 220～280 ℃, with resin plasticizing, clamp-on in the runner of the layer 5 (E) of mould and layer 7 (C);
Layer 6 (D) by an extruder, under 160～280 ℃, with PA resin plasticizing, is clamp-oned in the runner of layer 6 (D) of mould;
The 8th layer (B) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, clamp-ons in the runner of the 8th layer (B) of mould;
Orlop (A) by an extruder, after primary raw material resin PE or EVA or ionic resin and additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, is clamp-oned in the runner of orlop (A) of mould;
All the other are with example 1.
Embodiment 6:
Prepare 190 microns left and right sides high resistively nine-layer co-extrusion-blown moulding films
The superiors (I) by an extruder, after primary raw material resin PP or PA and additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, clamp-on in the runner of the superiors (I) of mould;
The second layer (H) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, is clamp-oned in the runner of the second layer (H) of mould;
The 3rd layer (G) by an extruder, after primary raw material resin LLDPE or MPE and additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, clamp-ons in the runner of the 3rd layer (G) of mould, wherein;
The 4th layer (F) by an extruder, under 160～280 ℃, with HDPE resin plasticizing, clamp-ons in the runner of the 4th layer (F) of mould;
Layer 5 (E) by an extruder, after jointing material resin and additive evenly stirred in extruder front end mixed-hopper, under 220～280 ℃, with the resin plasticizing, is clamp-oned in the runner of the layer 5 (E) of mould and layer 7 (C);
Layer 6 (D) by an extruder, under 160～280 ℃, with EVOH resin plasticizing, is clamp-oned in the runner of layer 6 (D) of mould;
Layer 7 (C) by an extruder, after PA resin and additive evenly stirred in extruder front end mixed-hopper, under 220～280 ℃, with the resin plasticizing, is clamp-oned in the runner of the layer 5 (E) of mould and layer 7 (C);
The 8th layer (B) by an extruder, under 160～280 ℃, with jointing material resin plasticizing, clamp-ons in the runner of the 8th layer (B) of mould;
Orlop (A), by an extruder, after primary raw material resin PE, EVA, ionic resin and additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, resin is plastified, clamp-on in the runner of orlop (A) of mould, wherein the weight ratio of PE, EVA, ionic resin is 1: 1: 2.
All the other are with example 1.
More than in each example, additive be meant film industry slipping agent, antitack agent, antistatic additive, color masterbatch commonly used a kind of or several.
Jointing material can be selected different jointing materials for use according to the material difference, as: PA and PE are bonded together, just select corresponding jointing material for use, PP and EVOH are bonded together, its jointing material type is different again.
Among the present invention:
PA---polyamide (nylon) comprises HOPA (PA6) and COPA (PA6-66);
PE---polyethylene has the LDPE low density polyethylene (LDPE), HDPE high density polyethylene (HDPE), LLDPE LLDPE and MPE metallocene PE;
PP---polypropylene;
EVOH---ethylene-vinyl alcohol copolymer;
EVA---ethene-vinyl acetate copolymer;
PET---PETG
PS---polystyrene.
Claims (10)
1, a kind of high resistively nine-layer co-extrusion-blown moulding film, it is characterized in that it is 25～300 microns nine layers of coextrusion composite constructions: the superiors (I) are the film outer surface layer, the second layer (H), the 3rd layer (G), the 4th layer (F), layer 5 (E), layer 6 (D), layer 7 (C), the 8th layer (B), orlop (A) is a hot sealing layer
The described the superiors (I), its composition is PE or PP, PA, PET, PS material;
The described second layer (H), the 3rd layer (G), the 4th layer (F), layer 5 (E), layer 6 (D), layer 7 (C), the 8th layer (B), its composition is PE or PP, PA, EVOH, EVA, PET material, or, select corresponding jointing material for use according to the selected material difference of adjacent two layers;
Described orlop (A), it consists of PP or PE, EVA, ionic resin.
2, a kind of high resistively nine-layer co-extrusion-blown moulding film according to claim 1 is characterized in that it is the nine stacked structures that add about 160 microns:
The described the superiors (I), it consists of the PA material;
The described second layer (H), it consists of jointing material;
Described the 3rd layer (G), it consists of one or more PE materials;
Described the 4th layer (F), it consists of jointing material;
Described layer 5 (E) and layer 7 (C), it consists of the PA6-66 material;
Described layer 6 (D), it consists of main barrier material EVOH;
Described the 8th layer (B), it consists of jointing material;
Described orlop (A), it consists of PE or materials such as EVA or ionic resin.
3, a kind of high resistively nine-layer co-extrusion-blown moulding film according to claim 1 is characterized in that it is the nine stacked structures that add about 80 microns:
The described the superiors (I), it consists of PA or PET material;
The described second layer (H), it consists of jointing material;
Described the 3rd layer (G), it consists of one or more PE materials;
Described the 4th layer (F), it consists of jointing material;
Described layer 5 (E) and layer 7 (C), it consists of the PA6 material;
Described layer 6 (D), it consists of main barrier material EVOH;
Described the 8th layer (B), it consists of jointing material;
Described orlop (A), it consists of PE or PP or EVA or ionic resin material.
4, a kind of high resistively nine-layer co-extrusion-blown moulding film according to claim 1 is characterized in that it is 70 microns the nine stacked structures that add:
The described the superiors (I), it consists of PP or HDPE material;
The described second layer (H), it consists of jointing material;
Described the 3rd layer (G), it consists of one or more PE materials;
Described the 4th layer (F), the jointing material that it consists of;
Described layer 5 (E) and layer 7 (C), it consists of the PA6 material;
Described layer 6 (D), it consists of main barrier material EVOH;
Described the 8th layer (B), it consists of jointing material;
Described orlop (A), it consists of PE or materials such as EVA or ionic resin.
5, a kind of high resistively nine-layer co-extrusion-blown moulding film according to claim 1 is characterized in that it is 100 microns the nine stacked structures that add:
The described the superiors (I), it consists of PP or PA material;
The described second layer (H), it consists of jointing material;
Described the 3rd layer (G), it consists of main barrier material EVOH;
Described the 4th layer (F) and layer 6 (D), the jointing material that it consists of;
Described layer 5 (E), it consists of one or more PE materials;
Described layer 7 (C), it consists of the PA material;
Described the 8th layer (B), it consists of jointing material;
Described orlop (A), it consists of PE or materials such as PP or EVA or ionic resin.
6, a kind of high resistively nine-layer co-extrusion-blown moulding film according to claim 1 is characterized in that it is the nine stacked structures that add about 190 microns:
The described the superiors (I), it consists of PP or PA material;
The described second layer (H), it consists of jointing material;
Described the 3rd layer (G), it consists of one or more PE materials;
Described the 4th layer (F), the jointing material that it consists of;
Described layer 5 (E), layer 6 (D) and layer 7 (C), it consists of the PA material;
Described the 8th layer (B), it consists of jointing material;
Described orlop (A), it consists of PE or EVA or ionic resin material.
7, a kind of high resistively nine-layer co-extrusion-blown moulding film according to claim 1 is characterized in that it is the nine stacked structures that add about 190 microns:
The described the superiors (I), it consists of materials such as PP or PA;
The described second layer (H), it consists of jointing material;
Described the 3rd layer (G), the 4th layer (F), it consists of one or more PE materials;
Described layer 5 (E), the jointing material that it consists of;
Described layer 6 (D), it consists of main barrier material EVOH;
Described layer 7 (C), it consists of the PA material;
Described the 8th layer (B), it consists of jointing material;
Described orlop (A), it consists of PE or EVA or ionic resin material.
8,, it is characterized in that described PE material has LDPE, HDPE, LLDPE, MPE according to one of them described a kind of high resistively nine-layer co-extrusion-blown moulding film of claim 2 ~ 7.
9,, it is characterized in that an amount of slipping agent of described each layer interpolation, antitack agent, antistatic additive, the color masterbatch additive is a kind of or several according to one of them described a kind of high resistively nine-layer co-extrusion-blown moulding film of claim 1 ~ 7.
10, the preparation method of a kind of high resistively nine-layer co-extrusion-blown moulding film according to claim 1, it is through nine layers of coextrusion blow molding process, and the nine layer composite construction of moulding thickness between 25～300 microns, nine layer materials are extruded by nine extruders respectively, through nine layers of laminated film of same mould stack coextrusion one-shot forming, its concrete manufacture method is as follows:
The superiors (I) by an extruder, after primary raw material resin and various additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, clamp-on in the runner of the superiors (I) of mould;
The second layer (H) by an extruder, under 160～280 ℃, with resin plasticizing, is clamp-oned in the runner of the second layer (H) of mould;
The 3rd layer (G) by an extruder, after primary raw material resin and various additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, clamp-ons in the runner of the 3rd layer (G) of mould;
The 4th layer (F) by an extruder, under 160～280 ℃, with resin plasticizing, clamp-ons in the runner of the 4th layer (F) of mould;
Layer 5 (E) and layer 7 (C), respectively by an extruder, after primary raw material resin and various additive evenly stirred in extruder front end mixed-hopper, under 220～280 ℃, with resin plasticizing, clamp-on in the runner of the layer 5 (E) of mould and layer 7 (C);
Layer 6 (D) by an extruder, under 160～280 ℃, with resin plasticizing, is clamp-oned in the runner of layer 6 (D) of mould;
The 8th layer (B) by an extruder, under 160～280 ℃, with resin plasticizing, clamp-ons in the runner of the 8th layer (B) of mould;
Orlop (A) by an extruder, after primary raw material resin and various additive evenly stirred in extruder front end mixed-hopper, under 160～280 ℃, with the resin plasticizing, is clamp-oned in the runner of orlop (A) of mould;
To by air-cooling device, be shaped to film bubble pipe through the nine stacked works that add of die head co-extrusion modling;
Import the collapser device, film bubble pipe is flattened, make it to become double-deck flat film.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510040827 CN1724254A (en) | 2005-06-29 | 2005-06-29 | High resistively nine-layer co-extrusion-blown moulding film and its preparation process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510040827 CN1724254A (en) | 2005-06-29 | 2005-06-29 | High resistively nine-layer co-extrusion-blown moulding film and its preparation process |
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| CN 200510040827 Pending CN1724254A (en) | 2005-06-29 | 2005-06-29 | High resistively nine-layer co-extrusion-blown moulding film and its preparation process |
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