CN101913282A - High-barrier composite film and production method thereof - Google Patents
High-barrier composite film and production method thereof Download PDFInfo
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- CN101913282A CN101913282A CN2010102626469A CN201010262646A CN101913282A CN 101913282 A CN101913282 A CN 101913282A CN 2010102626469 A CN2010102626469 A CN 2010102626469A CN 201010262646 A CN201010262646 A CN 201010262646A CN 101913282 A CN101913282 A CN 101913282A
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- ldpe
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- barrier composite
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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
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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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
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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
- B29C2948/92523—Force; Tension
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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
- B29C2948/9259—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
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
-
- 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
- B29C2948/92933—Conveying, transporting or storage of articles
Abstract
The invention discloses a high-barrier composite film which comprises a film body, wherein the film body is formed by sequentially compounding an LDPE (Low-Density Polyethylene) outer layer, a PVDC (Polyvinyl Dichloride) middle layer and an LDPE inner layer. The high-barrier composite film is produced by the following steps of: respectively adding LDPE, PVDC and LDPE resin particles into three extruder hoppers of a composite film blow molding unit in the proportion of 36 percent:28 percent:36 percent; heating to a melting state by an extruder melting section; collecting into an upper die head, a middle die head and a lower die head of a composite die head for compounding; and blow-molding, cooling for moulding, drawing and carrying out corona treatment to obtain a finished film product with the thickness of 0.09-0.18mm. The invention has the advantages that three materials are compounded into a three-layer film by three extruders of the composite film blow molding unit, the materials with different performance are mutually compounded together in the extruding process and laminated on characteristics, and the finished film has needed favorable characteristics.
Description
Technical field
The present invention relates to fields such as food package film, industrial winding film, especially relate to a kind of high-barrier composite film that is used for packaging for foodstuff, the invention still further relates to the production method of this laminated film.
Background technology
The plastic package material that is used for food, safety, hygienic issues and consumers in general's is healthy closely bound up.The food packing composite film of current domestic production has a small amount of solvent residue owing to adopt intermediate layer adhesive in recombination process, during as packaging for foodstuff, can make the interior food of packing produce peculiar smell, sanitation performance variation.How in food package film, dissolvent residual to be reduced to minimum, can guarantee that product quality can reduce production costs again, increase economic efficiency, make it both meet the packaging material industry development, adapting to food environmental protection package requirement again, is the problem that the plastics package industry generally is concerned about.
For satisfying above-mentioned requirements, there is manufacturer to develop the binder free composite package film, as BOPP (Biaxially oriented polypropylene)/LDPE (polyethylene from high pressure process) casting films, thickness 0.04mm, can be used for packagings for foodstuff such as instant noodles, but, can not satisfy the requirement of some food aspect safe and sanitary because the oxygen transit dose and the steam permeable amount of film are higher.
Summary of the invention
The object of the present invention is to provide a kind of block water high-barrier composite film of steam performance of good resistance oxygen that has, the present invention also provides the production method of this laminated film.
For achieving the above object, the present invention can take following technical proposals:
High-barrier composite film of the present invention comprises film bulk, and described film bulk is composited by low density polyethylene (LDPE) (LDPE) skin, polyvinylidene chloride (PVDC) middle level and low density polyethylene (LDPE) (LDPE) internal layer successively.
Described high-barrier composite film is produced according to following method:
Ratio according to 36%: 28%: 36% in three extruder hoppers of laminated film blowing unit adds LDPE, PVDC and LDPE resin particle material respectively, be heated to molten through the extruder melt zone, be pooled to carry out in the upper, middle and lower die head of compound die head compound, through blowing, cooling and shaping, traction, sided corona treatment, obtain the finished film that thickness is 0.09-0.18mm.
When the extruder melt zone heated, the heating-up temperature of respectively distinguishing of inside and outside two-layer low density polyethylene (LDPE) raw material was followed successively by: a district: 155-170 ℃, and two districts: 165-175 ℃, three districts: 165-175 ℃, four districts: 165-175 ℃, five districts: 165-175 ℃, six districts: 165-175 ℃; The heating-up temperature of respectively distinguishing of middle level polyvinylidene chloride raw material is followed successively by: a district: 165-185 ℃, and two districts: 175-195 ℃, three districts: 175-195 ℃, four districts: 175-195 ℃, five districts: 175-195 ℃, six districts: 175-195 ℃.
The feeding speed of described extruder is 260 rev/mins.
The tension force of described traction operation is controlled at below the 5kgf.
Described sided corona treatment operation control 38-45 dynes per centimeter.
Described air-pressure controlling is used for control instrument and automation equipment at 4-8kgf.
The invention has the advantages that three extruders by laminated film blowing unit make three kinds of materials be combined into three-layer thin-film, because the material of different performance is combined with each other in extrusion, on characteristic, superpose, make finished films have required good characteristic.
This laminated film is extruded laminated film with similar individual layer and is compared, because LDPE water imbibition very low (suction) hardly, PVDC are better to oxygen and steam barrier, so the materials with high barrier property of product obviously improves, can effectively stop the moisture absorption and the oxidation of packing content thing.Compare with similar two layers of composite membrane, the oxygen transit dose of product reduces obviously, and steam penetrating capacity also decreases; Simultaneously, the present invention extrudes composite membrane for three layers and need not to use adhesive, and no solvent residue so have good safety and sanitation performance, is suitable for that the resistance oxygen steam that blocks water is had simultaneously packaging for foodstuff and other packings that requires.
Through repetition test, adjustment, it is 36%: 28%: 36% o'clock that the proportioning of three kinds of materials is selected the pool, and the compound product that goes out both can satisfy required barrier property requirement, kept minimizing of input cost again.
Description of drawings
Fig. 1 is a section structure schematic diagram of the present invention.
The specific embodiment
As shown in the figure, high-barrier composite film of the present invention comprises film bulk, and described film bulk is composited by low density polyethylene (LDPE) (LDPE) skin 1, polyvinylidene chloride (PVDC) middle level 2 and low density polyethylene (LDPE) (LDPE) internal layer 3 successively.
High-barrier composite film of the present invention, it is to be composited according to following method:
Ratio according to 36%: 28%: 36% in three extruder hoppers of FD-BM1600-III three-layer coextru-laminated film blowing unit adds low density polyethylene (LDPE) (LDPE) respectively, polyvinylidene chloride (PVDC) and low density polyethylene (LDPE) (LDPE) particulate material, the feeding speed of three extruders is controlled in 260 rev/mins, when the extruder melt zone heats, in, the heating-up temperature of respectively distinguishing of outer two-layer low density polyethylene (LDPE) raw material is followed successively by: a district: 155-170 ℃, two districts: 165-175 ℃, three districts: 165-175 ℃, four districts: 165-175 ℃, five districts: 165-175 ℃, six districts: 165-175 ℃; The heating-up temperature of respectively distinguishing of middle level polyvinylidene chloride raw material is followed successively by: a district: 165-185 ℃, and two districts: 175-195 ℃, three districts: 175-195 ℃, four districts: 175-195 ℃, five districts: 175-195 ℃, six districts: 175-195 ℃; After three kinds of raw materials are heated to molten, be pooled to carry out in the upper, middle and lower die head of the compound die head that three extruders join altogether compound, through blowing, cooling and shaping, traction (tension force is controlled at below the 5kgf), sided corona treatment (38-45 dynes per centimeter), obtaining thickness is the three-layer thin-film finished product of 0.09-0.18mm, the inside and outside layer of this film is the LDPE layer, and the centre is the PVDC layer.
The required air-pressure controlling of control instrument and automation equipment is at 4-8kgf.
The laminated film that the present invention produces is mainly used in packaging for foodstuff and the resistance oxygen steam that blocks water is had the packing of product that requires simultaneously.
The present invention is extruded laminated film with similar individual layer and is compared by the three-layer thin-film that inside and outside two-layer LDPE raw material and middle PVDC raw material are composited, and the good characteristic of each raw material can superpose, and obviously improves the comprehensive physical property of product.Compare with similar two layers of composite membrane, the oxygen transit dose of product reduces obviously, and the steam permeable amount also decreases; Simultaneously, extrude composite membrane and do not resemble and need use adhesive two layers of composite membrane for three layers of the present invention, so no solvent residue, free from extraneous odour during packaged food has good safety and sanitation performance.
Three layers of laminated film of the present invention and individual layer are extruded the following table that the results are shown in that composite membrane compares with two layers of composite membrane:
Claims (7)
1. a high-barrier composite film comprises film bulk, it is characterized in that: described film bulk is composited by low density polyethylene (LDPE) skin (1), polyvinylidene chloride middle level (2) and low density polyethylene (LDPE) internal layer (3) successively.
2. according to the production method of the described high-barrier composite film of claim 1, it is characterized in that: it is to be composited according to following method:
Ratio according to 36%: 28%: 36% in three extruder hoppers of laminated film blowing unit adds low density polyethylene (LDPE), polyvinylidene chloride and ldpe resin particulate material respectively, be heated to molten through the extruder melt zone, be pooled to carry out in the upper, middle and lower die head of compound die head compound, through blowing, cooling and shaping, traction, sided corona treatment, obtain the finished film that thickness is 0.09-0.18mm.
3. according to the production method of the described high-barrier composite film of claim 2, it is characterized in that: when the extruder melt zone heats, the heating-up temperature of respectively distinguishing of inside and outside two-layer low density polyethylene (LDPE) raw material is followed successively by: a district: 155-170 ℃, two districts: 165-175 ℃, three districts: 165-175 ℃, four districts: 165-175 ℃, five districts: 165-175 ℃, six districts: 165-175 ℃; The heating-up temperature of respectively distinguishing of middle level polyvinylidene chloride raw material is followed successively by: a district: 165-185 ℃, and two districts: 175-195 ℃, three districts: 175-195 ℃, four districts: 175-195 ℃, five districts: 175-195 ℃, six districts: 175-195 ℃.
4. according to the production method of the described high-barrier composite film of claim 2, it is characterized in that: the feeding speed of described extruder is 260 rev/mins.
5. according to the production method of the described high-barrier composite film of claim 2, it is characterized in that: the tension force of described traction operation is controlled at below the 5kgf.
6. according to the production method of the described high-barrier composite film of claim 2, it is characterized in that: described sided corona treatment operation control 38-45 dynes per centimeter.
7. according to the production method of the described high-barrier composite film of claim 2, it is characterized in that: air-pressure controlling is at 4-8kgf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102626469A CN101913282A (en) | 2010-08-26 | 2010-08-26 | High-barrier composite film and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102626469A CN101913282A (en) | 2010-08-26 | 2010-08-26 | High-barrier composite film and production method thereof |
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| CN101913282A true CN101913282A (en) | 2010-12-15 |
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| CN2010102626469A Pending CN101913282A (en) | 2010-08-26 | 2010-08-26 | High-barrier composite film and production method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385565A (en) * | 2014-09-03 | 2015-03-04 | 福建师范大学 | Preparation method for three-layer co-extruded composite high barrier blown film |
| CN104960297A (en) * | 2015-07-13 | 2015-10-07 | 河南大有塑业发展有限公司 | Polyethylene composite film prepared by casting method and preparation method of polyethylene composite film |
| CN105792949A (en) * | 2013-10-18 | 2016-07-20 | 英诺薄膜有限公司 | Polyvinylidene chloride coated substrates |
| CN112831121A (en) * | 2021-02-03 | 2021-05-25 | 洛阳晟鹏新材料科技有限公司 | PVDC high-barrier co-extrusion self-adhesive film for military protection and preparation method thereof |
| CN112874084A (en) * | 2021-02-03 | 2021-06-01 | 洛阳晟鹏新材料科技有限公司 | PVDC high-barrier co-extrusion stretching film for packaging low-temperature meat products and preparation method thereof |
| CN113524642A (en) * | 2021-08-02 | 2021-10-22 | 浙江大成新材料科技有限公司 | High-barrier degradable composite film for food packaging and manufacturing method and application thereof |
Citations (4)
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| JPH01319580A (en) * | 1988-06-22 | 1989-12-25 | Haishiito Kogyo Kk | Packing material |
| CN101198467A (en) * | 2005-06-17 | 2008-06-11 | 克里奥瓦克公司 | Film with high impact strength and high shrink combination |
| CN101306593A (en) * | 2008-07-07 | 2008-11-19 | 苏州天加新材料有限公司 | Multilayer coextruding pyrocondensation film |
| CN201313684Y (en) * | 2008-11-03 | 2009-09-23 | 金誉(河南)包装有限公司 | Co-extruded PVDC packaging composite material with high barrier property |
-
2010
- 2010-08-26 CN CN2010102626469A patent/CN101913282A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01319580A (en) * | 1988-06-22 | 1989-12-25 | Haishiito Kogyo Kk | Packing material |
| CN101198467A (en) * | 2005-06-17 | 2008-06-11 | 克里奥瓦克公司 | Film with high impact strength and high shrink combination |
| CN101306593A (en) * | 2008-07-07 | 2008-11-19 | 苏州天加新材料有限公司 | Multilayer coextruding pyrocondensation film |
| CN201313684Y (en) * | 2008-11-03 | 2009-09-23 | 金誉(河南)包装有限公司 | Co-extruded PVDC packaging composite material with high barrier property |
Non-Patent Citations (1)
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105792949A (en) * | 2013-10-18 | 2016-07-20 | 英诺薄膜有限公司 | Polyvinylidene chloride coated substrates |
| CN104385565A (en) * | 2014-09-03 | 2015-03-04 | 福建师范大学 | Preparation method for three-layer co-extruded composite high barrier blown film |
| CN104960297A (en) * | 2015-07-13 | 2015-10-07 | 河南大有塑业发展有限公司 | Polyethylene composite film prepared by casting method and preparation method of polyethylene composite film |
| CN104960297B (en) * | 2015-07-13 | 2017-01-25 | 河南大有塑业发展有限公司 | Polyethylene composite film prepared by casting method and preparation method of polyethylene composite film |
| CN112831121A (en) * | 2021-02-03 | 2021-05-25 | 洛阳晟鹏新材料科技有限公司 | PVDC high-barrier co-extrusion self-adhesive film for military protection and preparation method thereof |
| CN112874084A (en) * | 2021-02-03 | 2021-06-01 | 洛阳晟鹏新材料科技有限公司 | PVDC high-barrier co-extrusion stretching film for packaging low-temperature meat products and preparation method thereof |
| CN112874084B (en) * | 2021-02-03 | 2023-08-22 | 洛阳晟鹏新材料科技有限公司 | PVDC high-barrier co-extrusion stretching film for packaging low-temperature meat products and preparation method thereof |
| CN112831121B (en) * | 2021-02-03 | 2023-09-15 | 洛阳晟鹏新材料科技有限公司 | PVDC high-barrier co-extrusion self-adhesive film for military protection and preparation method thereof |
| CN113524642A (en) * | 2021-08-02 | 2021-10-22 | 浙江大成新材料科技有限公司 | High-barrier degradable composite film for food packaging and manufacturing method and application thereof |
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Application publication date: 20101215 |