CN103862768A - Polyethylene isolating film reusable in tire production and preparation method of polyethylene isolating film - Google Patents
Polyethylene isolating film reusable in tire production and preparation method of polyethylene isolating film Download PDFInfo
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- CN103862768A CN103862768A CN201410119025.3A CN201410119025A CN103862768A CN 103862768 A CN103862768 A CN 103862768A CN 201410119025 A CN201410119025 A CN 201410119025A CN 103862768 A CN103862768 A CN 103862768A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
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- 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
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/625—Screws characterised by the ratio of the threaded length of the screw to its outside diameter [L/D ratio]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/926—Flow or feed rate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92647—Thickness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92828—Raw material handling or dosing, e.g. active hopper or feeding device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Tires In General (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention relates to a polyethylene isolating film reusable in tire production and a preparation method of the polyethylene isolating film, in particular relates to an isolating film reusable in the production process of radial tires, and belongs to the technical field of production of the radial tires. The polyethylene isolating film comprises an outer film, an intermediate film and an inner film, wherein the thickness ratio of the three films is (3-4):(2-4):(3-4); the total thickness of the outer film, the intermediate film and the inner film is 30-150 microns; the polyethylene isolating film is prepared by batching, fusion, extrusion, film blowing, air-cooling sizing, surface treatment and winding. Oxygen can be isolated by the three-layer composite polyethylene isolating film prepared through the method, all layers of the polyethylene isolating film are well compatible, disengaging and separation of the layers can be avoided, and the physical and mechanical properties can be kept under the condition that the film is reused.
Description
Technical field
The present invention relates to a kind of for reusable polyethylene barrier film of tire production and preparation method thereof, specifically a kind of barrier film that can Reusability in radial tyre production process and preparation method thereof, belongs to the production technical field of radial.
Background technology
Polyethylene (PE) is the representative of TPO, is mainly used in packaging field, and PE film has cost and obtained in industrial packaging field using widely compared with the advantage of low, good mechanical performance.In tire production, for fear of rubber scorching, its packaging material need have good oxygen barrier performance, thereby the validity of packing with common PE film is poor.Limit oxysensible rubber contact oxygen by special packaging material and guarantee rubber quality.
At the design aspect of oxygen barrier packaging material, the method for main flow makes to adopt multilayer materials to guarantee in the world.US5077111 has designed a kind of composite being made up of multilayer material, and ectonexine has PET preparation, and sandwich of layers is sealed in pet layer and is made by polymer MXD-6.In the multilayer packaging material of US2008241521 design, core layer is made up of PVOH.The common shortcoming of these methods is that between different layers, material character differs greatly, easily delamination.
Chinese patent CN101775169A discloses a kind of polyethylene barrier film for tire production, has added ethene (methyl) acrylic copolymer, the multi-functional processing aid of plastic cement type and plasticizer in formula, has obtained the barrier film of isolation performance excellence.
Summary of the invention
The object of the present invention is to provide a kind of polyethylene barrier film for tire production and preparation method thereof; Described barrier film forms by three layers, wherein inside and outside two-layerly formed by low density polyethylene (LDPE) and LLDPE, intermediate layer is made up of LLDPE and oxygen absorbent, selects and the further properties of raising product of three kinds of material ratios selections by oxygen absorbent kind.
According to technical scheme provided by the invention, for the reusable polyethylene barrier film of tire production, comprise outer membrane, interlayer film and inner layer film; The Thickness Ratio of trilamellar membrane is followed successively by 3-4:2-4:3-4;
The gross thickness of described outer membrane, interlayer film and inner layer film is 30-150 μ m.
Described for the reusable polyethylene barrier film of tire production, by weight: described outer membrane and inner layer film are the blend of low density polyethylene (LDPE) and LLDPE, be 30-40 part; Interlayer film is LLDPE and oxygen absorbent blend, is 20-40 part.
In described outer membrane and inner layer film, low density polyethylene (LDPE) and LLDPE weight ratio are 0.1-10:1; The weight ratio of interlayer film neutral line low density polyethylene (LDPE) and oxygen absorbent is 10-100:1.
Described oxygen absorbent is the iron powder of mass fraction 90%-98% and the electrolyte of 2%-10%.
Described electrolyte is specially one or more in Fe3C, FeO or calcium chloride.
For the preparation method of the reusable polyethylene barrier film of tire production, step is as follows by weight:
(1) batching melting: outer membrane and inner layer film are the blend of low density polyethylene (LDPE) and LLDPE, are 30-40 part; Interlayer film is LLDPE and oxygen absorbent blend, is 20-40 part; Raw material is delivered in three extruders of three-layer co-extruded inflation film manufacturing machine to heating and melting respectively and become polymer melt, melt temperature is 200-230 ℃;
(2) extrude: stacked the closing of mouth mould upper layer, be combined into co-extrusion film by the each layer component of the each runner of die head; Described inflation film manufacturing machine adopts single screw extrusion machine, and extruder body temperature is 170-230 ℃, and die head temperature is 180-240 ℃, and screw speed is 10-40 rev/min;
(3) blown film: described polymer melt makes through inflation of three-layer co-extruded blown film unit, and drawn becomes film, and blow-up ratio is 2-3, and draw speed is 8-25m/min;
(4) air-cooling moulding: the film stretching is adopted to air-cooling moulding, and cooling line height is 0.5-1m;
(5) surface treatment, rolling: by cooled film surface sided corona treatment, processing electric current is 160-210A, and peak power output is 1-20kw, be rolled into film volume, cuts and be packaged to be product for the reusable polyethylene barrier film of tire production.
The screw slenderness ratio of the described single screw extrusion machine of step (2) is 25:1,26:1.2,27:1.5,28:1.7 or 30:1.9.
The melt index of described low density polyethylene (LDPE) is 1.5-5, and the melt index of LLDPE is 1.8-7.
Three layers of composite polyethylene barrier film thickness that described method obtains are 30 μ m-150 μ m.According to different-thickness, select different screw, draw speed and blow-up ratio.
Adopt technical method of the present invention, three layers of composite polyethylene barrier film of preparation have good mechanical property and oxygen barrier performance, and the packing that meets rubber in tire production is used.Between trilamellar membrane, adhesion is good, is not easy to separate, can Reusability.
Beneficial effect of the present invention: three layers of composite polyethylene barrier film prepared by the present invention can be isolated oxygen, between each layer of product, compatibility is good, can not produce the layering that comes off, and can in Reusability situation, keep physical and mechanical properties.
The specific embodiment
The present invention further sets forth by following examples.
Embodiment 1
For the reusable polyethylene barrier film of tire production, comprise outer membrane, interlayer film and inner layer film; The Thickness Ratio of trilamellar membrane is followed successively by 3:2:3;
The gross thickness of described outer membrane, interlayer film and inner layer film is 30 μ m.
Described for the reusable polyethylene barrier film of tire production, by weight: described outer membrane and inner layer film are the blend of low density polyethylene (LDPE) and LLDPE, be 30 parts; Interlayer film is LLDPE and oxygen absorbent blend, is 20 parts.
In described outer membrane and inner layer film, low density polyethylene (LDPE) and LLDPE weight ratio are 1:1; The weight ratio of interlayer film neutral line low density polyethylene (LDPE) and oxygen absorbent is 10:1.
Described oxygen absorbent is the iron powder of mass fraction 90% and 10% electrolyte.
Described electrolyte is specially Fe
3c, FeO.
For the preparation method of the reusable polyethylene barrier film of tire production, step is as follows by weight:
(1) batching melting: outer membrane and inner layer film are the blend of low density polyethylene (LDPE) and LLDPE, are 30 parts; Interlayer film is LLDPE and oxygen absorbent blend, is 20 parts; Raw material is delivered in three extruders of three-layer co-extruded inflation film manufacturing machine to heating and melting respectively and become polymer melt, melt temperature is 200 ℃;
(2) extrude: stacked the closing of mouth mould upper layer, be combined into co-extrusion film by the each layer component of the each runner of die head; Described inflation film manufacturing machine adopts single screw extrusion machine, and extruder body temperature is 170 ℃, and die head temperature is 180 ℃, and screw speed is 10 revs/min;
(3) blown film: described polymer melt makes through inflation of three-layer co-extruded blown film unit, and drawn becomes film, and blow-up ratio is 2, and draw speed is 8m/min;
(4) air-cooling moulding: the film stretching is adopted to air-cooling moulding, and cooling line height is 0.5m;
(5) surface treatment, rolling: by cooled film surface sided corona treatment, processing electric current is 160A, and peak power output is 20kw, be rolled into film volume, cuts and be packaged to be product for the reusable polyethylene barrier film of tire production.
The screw slenderness ratio of the described single screw extrusion machine of step (2) is 25:1.
Embodiment 2
For the reusable polyethylene barrier film of tire production, comprise outer membrane, interlayer film and inner layer film; The Thickness Ratio of trilamellar membrane is followed successively by 4:2:4;
The gross thickness of described outer membrane, interlayer film and inner layer film is 150 μ m.
Described for the reusable polyethylene barrier film of tire production, by weight: described outer membrane and inner layer film are the blend of low density polyethylene (LDPE) and LLDPE, be 35 parts; Interlayer film is LLDPE and oxygen absorbent blend, is 35 parts.
In described outer membrane and inner layer film, low density polyethylene (LDPE) and LLDPE weight ratio are 6:1; The weight ratio of interlayer film neutral line low density polyethylene (LDPE) and oxygen absorbent is 60:1.
Described oxygen absorbent is the iron powder of mass fraction 95% and 8% electrolyte.
Described electrolyte is specially Fe
3c.
For the preparation method of the reusable polyethylene barrier film of tire production, step is as follows by weight:
(1) batching melting: outer membrane and inner layer film are the blend of low density polyethylene (LDPE) and LLDPE, are 35 parts; Interlayer film is LLDPE and oxygen absorbent blend, is 30 parts; Raw material is delivered in three extruders of three-layer co-extruded inflation film manufacturing machine to heating and melting respectively and become polymer melt, melt temperature is 215 ℃;
(2) extrude: stacked the closing of mouth mould upper layer, be combined into co-extrusion film by the each layer component of the each runner of die head; Described inflation film manufacturing machine adopts single screw extrusion machine, and extruder body temperature is 200 ℃, and die head temperature is 210 ℃, and screw speed is 25 revs/min;
(3) blown film: described polymer melt makes through inflation of three-layer co-extruded blown film unit, and drawn becomes film, and blow-up ratio is 3, and draw speed is 20m/min;
(4) air-cooling moulding: the film stretching is adopted to air-cooling moulding, and cooling line height is 0.8m;
(5) surface treatment, rolling: by cooled film surface sided corona treatment, processing electric current is 180A, and peak power output is 10kw, be rolled into film volume, cuts and be packaged to be product for the reusable polyethylene barrier film of tire production.
The screw slenderness ratio of the described single screw extrusion machine of step (2) is 28:1.7.
Embodiment 3
For the reusable polyethylene barrier film of tire production, comprise outer membrane, interlayer film and inner layer film; The Thickness Ratio of trilamellar membrane is followed successively by 4:2:4;
The gross thickness of described outer membrane, interlayer film and inner layer film is 100 μ m.
Described for the reusable polyethylene barrier film of tire production, by weight: described outer membrane and inner layer film are the blend of low density polyethylene (LDPE) and LLDPE, be 40 parts; Interlayer film is LLDPE and oxygen absorbent blend, is 40 parts.
In described outer membrane and inner layer film, low density polyethylene (LDPE) and LLDPE weight ratio are 10:1; The weight ratio of interlayer film neutral line low density polyethylene (LDPE) and oxygen absorbent is 100:1.
Described oxygen absorbent is the iron powder of mass fraction 98% and 2% electrolyte.
Described electrolyte is specially FeO and calcium chloride.
For the preparation method of the reusable polyethylene barrier film of tire production, step is as follows by weight:
(1) batching melting: outer membrane and inner layer film are the blend of low density polyethylene (LDPE) and LLDPE, are 40 parts; Interlayer film is LLDPE and oxygen absorbent blend, is 40 parts; Raw material is delivered in three extruders of three-layer co-extruded inflation film manufacturing machine to heating and melting respectively and become polymer melt, melt temperature is 230 ℃;
(2) extrude: stacked the closing of mouth mould upper layer, be combined into co-extrusion film by the each layer component of the each runner of die head; Described inflation film manufacturing machine adopts single screw extrusion machine, and extruder body temperature is 230 ℃, and die head temperature is 240 ℃, and screw speed is 10-40 rev/min;
(3) blown film: described polymer melt makes through inflation of three-layer co-extruded blown film unit, and drawn becomes film, and blow-up ratio is 3, and draw speed is 25m/min;
(4) air-cooling moulding: the film stretching is adopted to air-cooling moulding, and cooling line height is 1m;
(5) surface treatment, rolling: by cooled film surface sided corona treatment, processing electric current is 210A, and peak power output is 20kw, be rolled into film volume, cuts and be packaged to be product for the reusable polyethylene barrier film of tire production.
The screw slenderness ratio of the described single screw extrusion machine of step (2) is 26:1.2.
Embodiment products therefrom performance is as shown in table 1 below:
Table 1
From upper form, adopt preparation method of the present invention, three layers of composite polyethylene barrier film of preparation have good percentage elongation and physical and mechanical properties.
Claims (7)
1. for the reusable polyethylene barrier film of tire production, it is characterized in that: comprise outer membrane, interlayer film and inner layer film; The Thickness Ratio of trilamellar membrane is followed successively by 3-4:2-4:3-4;
The gross thickness of described outer membrane, interlayer film and inner layer film is 30-150 μ m.
2. as claimed in claim 1 for the reusable polyethylene barrier film of tire production, it is characterized in that by weight: described outer membrane and inner layer film are the blend of low density polyethylene (LDPE) and LLDPE, be 30-40 part; Interlayer film is LLDPE and oxygen absorbent blend, is 20-40 part.
3. as claimed in claim 2 for the reusable polyethylene barrier film of tire production, it is characterized in that: in described outer membrane and inner layer film, low density polyethylene (LDPE) and LLDPE weight ratio are 0.1-10:1; The weight ratio of interlayer film neutral line low density polyethylene (LDPE) and oxygen absorbent is 10-100:1.
4. as claimed in claim 2 for the reusable polyethylene barrier film of tire production, it is characterized in that: described oxygen absorbent is the iron powder of mass fraction 90%-98% and the electrolyte of 2%-10%.
5. as claimed in claim 4 for the reusable polyethylene barrier film of tire production, it is characterized in that: described electrolyte is specially Fe
3one or more in C, FeO or calcium chloride.
6. for the preparation method of the reusable polyethylene barrier film of tire production, it is characterized in that step is as follows by weight:
(1) batching melting: outer membrane and inner layer film are the blend of low density polyethylene (LDPE) and LLDPE, are 30-40 part; Interlayer film is LLDPE and oxygen absorbent blend, is 20-40 part; Raw material is delivered in three extruders of three-layer co-extruded inflation film manufacturing machine to heating and melting respectively and become polymer melt, melt temperature is 200-230 ℃;
(2) extrude: stacked the closing of mouth mould upper layer, be combined into co-extrusion film by the each layer component of the each runner of die head; Described inflation film manufacturing machine adopts single screw extrusion machine, and extruder body temperature is 170-230 ℃, and die head temperature is 180-240 ℃, and screw speed is 10-40 rev/min;
(3) blown film: described polymer melt makes through inflation of three-layer co-extruded blown film unit, and drawn becomes film, and blow-up ratio is 2-3, and draw speed is 8-25m/min;
(4) air-cooling moulding: the film stretching is adopted to air-cooling moulding, and cooling line height is 0.5-1m;
(5) surface treatment, rolling: by cooled film surface sided corona treatment, processing electric current is 160-210A, and peak power output is 1-20kw, be rolled into film volume, cuts and be packaged to be product for the reusable polyethylene barrier film of tire production.
7. as claimed in claim 6 for the preparation method of the reusable polyethylene barrier film of tire production, it is characterized in that: the screw slenderness ratio of the described single screw extrusion machine of step (2) is 25:1,26:1.2,27:1.5,28:1.7 or 30:1.9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410119025.3A CN103862768B (en) | 2014-03-27 | 2014-03-27 | For polyethylene separators reusable in tire production and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410119025.3A CN103862768B (en) | 2014-03-27 | 2014-03-27 | For polyethylene separators reusable in tire production and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103862768A true CN103862768A (en) | 2014-06-18 |
| CN103862768B CN103862768B (en) | 2016-07-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106808676A (en) * | 2015-11-27 | 2017-06-09 | 朱晓鹏 | A kind of strength barrier film manufacture craft and a kind of strength barrier film |
| CN108189506A (en) * | 2018-01-16 | 2018-06-22 | 青岛东海包装产业有限公司 | PE films and preparation method thereof are easily taken off in heat-sealing repeatedly |
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| CN102225646A (en) * | 2011-05-12 | 2011-10-26 | 福州绿帆包装材料有限公司 | Multilayer coextrusion medical blister composite packaging film and preparation method thereof |
| CN102602016A (en) * | 2012-02-21 | 2012-07-25 | 卢建忠 | Fresh-keeping separating layer cyclically used in rubber tyre manufacturing |
| CN103112110A (en) * | 2013-02-07 | 2013-05-22 | 卢建忠 | Method for manufacturing reused fresh-keeping isolation layer in rubber tire preparation |
| CN103317803A (en) * | 2013-07-09 | 2013-09-25 | 昊辰（无锡）塑业有限公司 | Five-layer composite freshness-keeping isolating membrane and preparation method thereof |
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2014
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| CN106808676A (en) * | 2015-11-27 | 2017-06-09 | 朱晓鹏 | A kind of strength barrier film manufacture craft and a kind of strength barrier film |
| CN108189506A (en) * | 2018-01-16 | 2018-06-22 | 青岛东海包装产业有限公司 | PE films and preparation method thereof are easily taken off in heat-sealing repeatedly |
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| CN103862768B (en) | 2016-07-06 |
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Denomination of invention: Polyethylene isolation film used repeatedly in tire production and its preparation method Effective date of registration: 20210414 Granted publication date: 20160706 Pledgee: Wuxi Xishan sub branch of Bank of Jiangsu Co.,Ltd. Pledgor: HAOCHEN (WUXI) PLASTIC Co.,Ltd. Registration number: Y2021320010132 |
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