CN107955242A - A kind of preparation method of oxygen barrier and degradable plastic film - Google Patents
A kind of preparation method of oxygen barrier and degradable plastic film Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
- B65D65/466—Bio- or photodegradable packaging materials
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- C08L2205/00—Polymer mixtures characterised by other features
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- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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Abstract
The invention belongs to plastic film material field, the preparation method of especially a kind of oxygen barrier and degradable plastic film.It is characterized in that：Its step is：(1) low density polyethylene (LDPE), pulullan polysaccharide and antioxidant, ultra-violet absorber are mixed 25 35 minutes in high-speed mixer, then the extruding pelletization in double screw extruder, obtains master batch, (2) mixes master batch with PBM degradable materials, blown film is extruded using plastic film blowing machine, up to product.Oxygen barrier provided by the invention and degradable plastic film the meeting automatic classifying under the action of oxygen-enriched and microorganism, film after discarded can be by the degradable digestion of microorganism in nature, carbon dioxide and water are ultimately generated, the ldpe film oxygen barrier property compared with same thickness can improve 40%.Preparation method technique of the invention is simple, production efficiency is high, industrializing implementation is easy, can be produced with common plastics inflation film manufacturing machine.
Description
Technical field
The invention belongs to plastic film material field, the preparation method of especially a kind of oxygen barrier and degradable plastic film.
Background technology
With food, medicine trade flourish, it is more urgent than ever to the demand of novel oxygen insulation packaging material, open
Hair is an important and urgent strategic task with studying new for food, the oxygen barrier material of Key works Drug packing.Currently, packing timber
Material problem of environmental pollution has caused the great attention of countries in the world, and realize the environment friendly of packaging material becomes material science
Research most one of direction of attraction and challenge.
Biodegradable plastic be administer plastic refuse environmental pollution and buffer petroleum resources contradiction effective way it
One, from the packaging bag of food to agricultural film, then the shell to electric equipment products, from non-returnable container, edible products to warp
Long durable products, biodegradable plastic just progressively substitute conventional plastic materials, and market prospects are very wide.It is it is reported that complete at present
The biodegradable plastic kind of ball research and development is tens kinds existing, and principal item has：The polyhydroxyalkanoate of microbial fermentation synthesis
(PHA, PHB, PHBV etc.), the polylactic acid (PLA) of chemical synthesis, polycaprolactone, dihydric alcohol dicarboxylic acids aliphatic polyester (PBS),
Aliphatic/aromatic copolyester, CO2/ epoxy compounds composition copolymer (APC), polycaprolactone (PCL), polyvinyl alcohol (PVA) etc.,
Natural polymer starch plastics and its biodegradable plastic blend, plastic alloy etc..Pilot scale is had been enter at present or batch is raw
The kind of production has a starch plastics, PHA (PHB, PHBV, PH BH-HX etc.), PLA, PBS, APC, modified PVA, starch/PVA,
The plastic alloys such as PLA, PCL and blend etc..
Starch is a kind of abundance, cheap natural macromolecular material, and a kind of inexhaustible
Renewable resource, it can be biodegradable in a variety of environmental conditions, and final catabolite CO2 and H2O can pass through plant
Photosynthesis recycled, any pollution will not be caused to environment.Therefore, starch is widely used in degradation plastic
Research and product development, and have been achieved for great progress.
At present, it is domestic to have developed the biodegradable packing film prepared using starch, pertinent literature report compared with
It is more.For example, the POL biodegradable plastics and its preparation process of Anlishan Green Environment Science ＆ Technology Co., Ltd., Shenyang's invention
【CN1624034】；A kind of biodegradable polypropylene carbonate composite material of CNOOC invention and preparation method thereof
【CN101962470】；A kind of polylactic acid nano of complete biodegradable of Changchun Applied Chemistry Research Inst., Chinese Academy of Sciences's invention is compound
Material and preparation method thereof【CN101735583】；Sichuan Food Fermentative Industry Design Academy is on fruits and vegetables nano preservative film
Development and its application study in green pepper is fresh-keeping【The development of the fruits and vegetables nano preservative films such as remaining Wenhua, Li Jiezhi and its in green grass or young crops
Application study Sichuan food and fermentation, 2008 (5) during green pepper is fresh-keeping：28-31】；Fujian Province No.2 Light Industry Research Institute is on forming sediment
The research of the degraded LDPE packing films of powder/cerium stearate balanced constant【Open the drop of China's collection starch/cerium stearate balanced constant
Solve the research Chinese Plastics of L DPE packing films, 1999 (2)：60-65】；Institute of Hua Zhong Agriculture University is on polyethylene/mineral powder
The mechanical performance of composite degradation film and the research of light degradation property【Wang Jinling, Yin Yeping, wait polyethylene/mineral powder compound
Printed when the mechanical performance and light degradation property chemical industry of degradable film, 2006 (3)：6-10】.
Current starch plastic has gone through three generation products:First generation product with 6%~20% starch and polyolefin (such as
PE, PP) blend prepare, belong to starch-filled plastic, leave a porous polymer that cannot be degraded again after starch degradation
And it cannot recycle.Its fragment causes soil more seriously to pollute, so this kind of starch plastics are referred to as " vacation degraded modeling
Material " or " disintegratable plastics ".Second generation product carries out blending preparation, starch with starch of the content more than 50% and hydrophilic polymer
Stronger physics and chemical action occur between hydrophilic polymer, and exists with continuous phase, this material is shown preferably
Biological degradability, machinability, economy, practicality, Technical comparing is ripe.Third generation product is by thermoplastic starch, day
Right starch, amylose or high amylose starches are not adding polymer, extrusion molding or are molded under high temperature, high pressure and super-humid conditions
The all biological degradation type plastic material arrived, but still it is in conceptual phase at present.
But the plastic package material prepared at present using starch, the size of biodegradability depend in system forming sediment
The height of powder content.The high plastic film material of content of starch, although biodegradability is preferable, thin film material mechanics performance
Shortcoming, and film is barrier bad, used in food, medicine when packaging field when, because tight with different degrees of gas permeability
Ghost image rings the quality of packaging.Therefore, development of new biodegradability is good, mechanical property can meet to pack requirement, have
The packing plastics film of good oxygen barrier is paid attention to be subject to countries in the world height.
The content of the invention
It is an object of the invention in place of overcome the deficiencies in the prior art, there is provided a kind of degradable through ripe modified starch
Plastic matrix PBM and Propiram (Pullulan) polysaccharide films level low density polyethylene (LDPE) (LDPE) blending extrusion blown film obtain every
The preparation method of oxygen and degradable plastic film.
The object of the present invention is achieved like this：
A kind of oxygen barrier and preparation method of degredation plastic film is：
(1) low density polyethylene (LDPE), pulullan polysaccharide and antioxidant, ultra-violet absorber are mixed in high-speed mixer
25-35 minutes, then the extruding pelletization in double screw extruder, obtained master batch,
(2) master batch is mixed with PBM degradable materials, blown film is extruded using plastic film blowing machine, up to product.
Moreover, the low density polyethylene (LDPE), pulullan polysaccharide, antioxidant, ultra-violet absorber and PBM degradable materials
Charged material weight number is distinguished：Low density polyethylene (LDPE), 100 parts；PBM degradable materials, 50-60 parts；Propiram (Pullulan) polysaccharide
30-40 parts；Antioxidant, 3-4 parts；Ultra-violet absorber, 0.5-1 parts；Moreover, the step (1) twin screw extruder barrel back segment
Four sections of controls of temperature point, control at 180~200 DEG C, the four sections of controls of barrel front-end temperature point, control 200~230 respectively respectively
DEG C, head temperature is divided to two sections of controls, controls respectively at 220~240 DEG C
Moreover, step (2) described four sections of controls of film blowing machine barrel back segment temperature point, control at 180~200 DEG C, expect respectively
Points of four sections controls of cylinder front-end temperature, control at 210~230 DEG C respectively, and head temperature is divided to two sections of controls, control respectively 220~
240 DEG C, blow-up ratio is 1.5~2.0,20~40r/min of screw speed, 10~50m/min of hauling speed.
Moreover, the antioxidant is antioxidant 1010 or irgasfos 168.
Moreover, the ultra-violet absorber is phenyl salicylate or ultraviolet absorbent UV-531.
Moreover, the PBM degradable materials will use starch, vegetable fat etc. high for the fully-degradable natural of main Material synthesis
After molecular material is specially treated, formed with water-soluble high-molecular material and a small amount of resin compounded, which is commercially available
Commodity.
The advantages and positive effects of the present invention are：
1st, oxygen barrier provided by the invention and degradable plastic film select ripe currently on the market change in preparation method
Property starch degradable plastic matrix PBM and Pullulan polysaccharide and film-grade LDPE blending extrusion blown films, the characteristics of using LDPE,
Ensure the good mechanical property of film；Using the degradability of PBM and P ullulan, the environment friendly of thin-film material is realized；
Using the high barrier of Pullulan, the barrier of thin-film material is improved；Existed by the use of starch and Pullulan as glucide
Similitude in structure, improves the compatibility of plastic film material entirety；By controlling being total to for LDPE/PBM/Pullulan systems
Mix ratio is, it can be achieved that regulation and control to barrier and degradability etc..
2nd, oxygen barrier provided by the invention and degradable plastic film the meeting automatic classifying under the action of oxygen-enriched and microorganism, gives up
Film after abandoning can ultimately generate carbon dioxide and water, compared with same thickness by the degradable digestion of microorganism in nature
Ldpe film oxygen barrier property can improve 40%.Preparation method technique of the invention is simple, production efficiency is high, industrializing implementation holds
Easily, can be produced with common plastics inflation film manufacturing machine.
Embodiment
The embodiment of the present invention is described in detail below；It should be noted that the present embodiment is narrative, it is not limited
, it is impossible to protection scope of the present invention is limited with this.
Involved PBM degradable materials are the biology drop for main material production using agricultural biomass resource in the present invention
Solve material, be use starch, vegetable fat etc. for the fully-degradable natural high molecular material of main Material synthesis it is specially treated after,
Formed with water-soluble high-molecular material and a small amount of resin compounded, be commercial goods.
Embodiment 1：
A kind of oxygen barrier and degradable plastic film, its preparation method comprise the following steps：
(1) LDPE, 100Kg are weighed；PBM degradable materials, 50Kg；Propiram (Pullulan) polysaccharide, 40Kg；Antioxidant
1010,4Kg；Phenyl salicylate, 0.5Kg；
(2) (1) it is formulated LDPE, Pullulan polysaccharide and antioxidant 1010, phenyl salicylate etc. in conventional height by step
Mixed 30 minutes in fast mixer, the extruding pelletization in double screw extruder, form master batch；Four sections of extruding granulator barrel back segment
Temperature is respectively 180 DEG C, 190 DEG C, 190 DEG C, 200 DEG C, four sections of temperature of barrel leading portion are respectively 200 DEG C, 210 DEG C, 210 DEG C, 230
DEG C, two sections of temperature of head are respectively 230 DEG C, 230 DEG C；
(3) by step, (2) middle master batch is mixed with PBM degradable materials, plastic film blowing machine extrusion blown film, film blowing machine barrel back segment four
Duan Wendu is respectively 180 DEG C, 190 DEG C, 190 DEG C, 200 DEG C, four sections of temperature of barrel leading portion are respectively 200 DEG C, 210 DEG C, 210 DEG C,
220 DEG C, two sections of temperature of head are respectively 230 DEG C, 230 DEG C.Blow-up ratio 1.5, screw speed 40r/min, hauling speed 30m/
Min, up to product.
Embodiment 2：
A kind of oxygen barrier and degradable plastic film, its preparation method comprise the following steps：
(1) LDPE, 100Kg are weighed；PBM degradable materials, 70Kg；Propiram (Pullulan) polysaccharide 40Kg；Antioxidant
1010,4Kg；Phenyl salicylate, 1Kg；
(2) (1) it is formulated LDPE, Pullulan polysaccharide and antioxidant 1010, phenyl salicylate etc. in conventional height by step
Mixed 30 minutes in fast mixer, the extruding pelletization in double screw extruder, form master batch；Four sections of extruding granulator barrel back segment
Temperature is respectively 180 DEG C, 190 DEG C, 190 DEG C, 200 DEG C, four sections of temperature of barrel leading portion are respectively 200 DEG C, 210 DEG C, 210 DEG C, 230
DEG C, two sections of temperature of head are respectively 230 DEG C, 230 DEG C；
(3) by step, (2) middle master batch is mixed with PBM degradable materials, plastic film blowing machine extrusion blown film, film blowing machine barrel back segment four
Duan Wendu is respectively 180 DEG C, 190 DEG C, 190 DEG C, 200 DEG C, four sections of temperature of barrel leading portion are respectively 200 DEG C, 210 DEG C, 210 DEG C,
220 DEG C, two sections of temperature of head are respectively 230 DEG C, 230 DEG C.Blow-up ratio 1.5, screw speed 40r/min, hauling speed 30m/
Min, up to product.
Embodiment 3：
A kind of oxygen barrier and degradable plastic film, its preparation method comprise the following steps：
(1) LDPE, 100Kg are weighed；PBM degradable materials, 60Kg；Propiram (Pullulan) polysaccharide 30Kg；Antioxidant
1010,3Kg；Phenyl salicylate, 1Kg；
(2) (1) it is formulated LDPE, Pullulan polysaccharide and antioxidant 1010, phenyl salicylate etc. in conventional height by step
Mixed 25 minutes in fast mixer, the extruding pelletization in double screw extruder, form master batch；Four sections of extruding granulator barrel back segment
Temperature is respectively 180 DEG C, 190 DEG C, 190 DEG C, 200 DEG C, four sections of temperature of barrel leading portion are respectively 200 DEG C, 210 DEG C, 210 DEG C, 230
DEG C, two sections of temperature of head are respectively 230 DEG C, 240 DEG C；
(3) by step, (2) middle master batch is mixed with PBM degradable materials, plastic film blowing machine extrusion blown film, film blowing machine barrel back segment four
Duan Wendu is respectively 180 DEG C, 190 DEG C, 190 DEG C, 200 DEG C, four sections of temperature of barrel leading portion are respectively 200 DEG C, 210 DEG C, 210 DEG C,
220 DEG C, two sections of temperature of head are respectively 230 DEG C, 240 DEG C.Blow-up ratio 1.5, screw speed 40r/min, hauling speed 30m/
Min, up to product.
Embodiment 4：
A kind of oxygen barrier and degradable plastic film, its preparation method comprise the following steps：
(1) LDPE, 100Kg are weighed；PBM degradable materials, 50Kg；Propiram (Pullulan) polysaccharide 40Kg；Antioxidant
1010,4Kg；Phenyl salicylate, 0.5Kg；
(2) (1) it is formulated by step and LDPE, Pullulan polysaccharide and irgasfos 168, ultraviolet absorbent UV-531 etc. exists
Mixed 25 minutes in conventional high-speed mixer, the extruding pelletization in double screw extruder, form master batch.After extruding granulator barrel
Four sections of temperature of section are respectively 190 DEG C, 190 DEG C, 200 DEG C, 200 DEG C, four sections of temperature of barrel leading portion are respectively 200 DEG C, 210 DEG C, 210
DEG C, 230 DEG C, two sections of temperature of head are respectively 240 DEG C, 240 DEG C；
(3) by step, (2) middle master batch is mixed with PBM degradable materials, plastic film blowing machine extrusion blown film, film blowing machine barrel back segment four
Duan Wendu is respectively 180 DEG C, 190 DEG C, 190 DEG C, 200 DEG C, four sections of temperature of barrel leading portion are respectively 200 DEG C, 210 DEG C, 210 DEG C,
220 DEG C, two sections of temperature of head are respectively 240 DEG C, 240 DEG C.Blow-up ratio 1.5, screw speed 40r/min, hauling speed 50m/
Min, up to product.
Embodiment 5：
A kind of oxygen barrier and degradable plastic film, its preparation method comprise the following steps：
(1) LDPE, 100Kg are weighed；PBM degradable materials, 70Kg；Propiram (Pullulan) polysaccharide 40Kg；Antioxidant
1010,4Kg；Phenyl salicylate, 1Kg；
(2) (1) it is formulated by step and LDPE, Pullulan polysaccharide and irgasfos 168, ultraviolet absorbent UV-531 etc. exists
Mixed 35 minutes in conventional high-speed mixer, the extruding pelletization in double screw extruder, form master batch.After extruding granulator barrel
Four sections of temperature of section are respectively 180 DEG C, 190 DEG C, 190 DEG C, 200 DEG C, four sections of temperature of barrel leading portion are respectively 200 DEG C, 210 DEG C, 210
DEG C, 230 DEG C, two sections of temperature of head are respectively 240 DEG C, 240 DEG C；
(3) by step, (2) middle master batch is mixed with PBM degradable materials, plastic film blowing machine extrusion blown film, film blowing machine barrel back segment four
Duan Wendu is respectively 180 DEG C, 190 DEG C, 190 DEG C, 200 DEG C, four sections of temperature of barrel leading portion are respectively 200 DEG C, 210 DEG C, 210 DEG C,
220 DEG C, two sections of temperature of head are respectively 230 DEG C, 230 DEG C.Blow-up ratio 1.5, screw speed 20r/min, hauling speed 10m/
Min, up to product.
Embodiment 6：
A kind of oxygen barrier and degradable plastic film, its preparation method comprise the following steps：
(1) LDPE, 100Kg are weighed；PBM degradable materials, 60Kg；Propiram (Pullulan) polysaccharide 30Kg；Irgasfos 168,
3Kg；Phenyl salicylate, 1Kg；
(2) (1) it is formulated by step and LDPE, Pullulan polysaccharide and irgasfos 168, ultraviolet absorbent UV-531 etc. exists
Mixed 35 minutes in conventional high-speed mixer, the extruding pelletization in double screw extruder, form master batch.After extruding granulator barrel
Four sections of temperature of section are respectively 180 DEG C, 190 DEG C, 190 DEG C, 200 DEG C, four sections of temperature of barrel leading portion are respectively 200 DEG C, 210 DEG C, 210
DEG C, 230 DEG C, two sections of temperature of head are respectively 230 DEG C, 240 DEG C；
(3) by step, (2) middle master batch is mixed with PBM degradable materials in step, plastic film blowing machine extrusion blown film, film blowing machine barrel
Four sections of temperature of back segment are respectively 190 DEG C, 190 DEG C, 190 DEG C, 200 DEG C, four sections of temperature of barrel leading portion are respectively 200 DEG C, 210 DEG C,
220 DEG C, 220 DEG C, two sections of temperature of head are respectively 230 DEG C, 240 DEG C.Blow-up ratio 2, screw speed 30r/min, hauling speed
40m/min, up to product.
Claims (7)
- A kind of 1. preparation method of oxygen barrier and degredation plastic film, it is characterised in that：Its step is：(1) by low density polyethylene Alkene, pulullan polysaccharide and antioxidant, ultra-violet absorber mix 25-35 minutes in high-speed mixer, then in twin-screw Extruding pelletization in extruder, obtains master batch, (2) mixes master batch with PBM degradable materials, extrudes blown film using plastic film blowing machine, i.e., Obtain product.
- 2. the preparation method of oxygen barrier according to claim 1 and degredation plastic film, it is characterised in that：It is described low close Spend the charged material weight number difference of polyethylene, pulullan polysaccharide, antioxidant, ultra-violet absorber and PBM masterbatch：Low-density is gathered Ethene, 100 parts；PBM degradable materials, 50-60 parts；30-40 parts of Propiram (Pullulan) polysaccharide；Antioxidant, 3-4 parts；It is ultraviolet Light absorbers, 0.5-1 parts.
- 3. the preparation method of oxygen barrier according to claim 1 and degredation plastic film, it is characterised in that：The step (1) described four sections of controls of twin screw extruder barrel back segment temperature point, control at 180~200 DEG C, barrel front-end temperature divides respectively Four sections of controls, control at 200~230 DEG C, head temperature is divided to two sections of controls, controls respectively at 220~240 DEG C respectively.
- 4. the preparation method of oxygen barrier according to claim 1 and degredation plastic film, it is characterised in that：The step (2) described four sections of controls of film blowing machine barrel back segment temperature point, control at 180~200 DEG C, barrel front-end temperature divides four sections respectively Control, controls at 210~230 DEG C respectively, and head temperature is divided to two sections of controls, controls respectively at 220~240 DEG C, blow-up ratio 1.5 ~2.0,20~40r/min of screw speed, 10~50m/min of hauling speed.
- 5. the preparation method of oxygen barrier according to claim 2 and degredation plastic film, it is characterised in that：The antioxygen Agent is antioxidant 1010 or irgasfos 168.
- 6. the preparation method of oxygen barrier according to claim 2 and degredation plastic film, it is characterised in that：It is described ultraviolet Light absorbers are phenyl salicylate or ultraviolet absorbent UV-531.
- 7. the preparation method of oxygen barrier according to claim 1 or 2 and degredation plastic film, it is characterised in that：It is described It is the fully-degradable natural high molecular material of main Material synthesis through special place that PBM degradable materials, which will use starch, vegetable fat etc., After reason, formed with water-soluble high-molecular material and a small amount of resin compounded, which is commercial goods.
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| CN201610907993.XA CN107955242A (en) | 2016-10-18 | 2016-10-18 | A kind of preparation method of oxygen barrier and degradable plastic film |
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| CN201610907993.XA CN107955242A (en) | 2016-10-18 | 2016-10-18 | A kind of preparation method of oxygen barrier and degradable plastic film |
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| CN201610907993.XA Pending CN107955242A (en) | 2016-10-18 | 2016-10-18 | A kind of preparation method of oxygen barrier and degradable plastic film |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110577690A (en) * | 2019-09-17 | 2019-12-17 | 山东省农业科学院农产品研究所 | Special air-conditioning antibacterial packaging film for sweet cherry refrigerator and preparation method thereof |
| CN112739630A (en) * | 2018-07-24 | 2021-04-30 | 维里科尔公司 | Compostable or recyclable packaging wrap |
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2016
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112739630A (en) * | 2018-07-24 | 2021-04-30 | 维里科尔公司 | Compostable or recyclable packaging wrap |
| US11807440B2 (en) | 2018-07-24 | 2023-11-07 | Vericool World Llc | Compostable or recyclable packaging wrap |
| CN110577690A (en) * | 2019-09-17 | 2019-12-17 | 山东省农业科学院农产品研究所 | Special air-conditioning antibacterial packaging film for sweet cherry refrigerator and preparation method thereof |
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Application publication date: 20180424 |