CN105415828A - Elastic barrier environmental friendly composite film - Google Patents

Elastic barrier environmental friendly composite film Download PDF

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Publication number
CN105415828A
CN105415828A CN201510419877.9A CN201510419877A CN105415828A CN 105415828 A CN105415828 A CN 105415828A CN 201510419877 A CN201510419877 A CN 201510419877A CN 105415828 A CN105415828 A CN 105415828A
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starch
elastic
film
elastic membrane
mass fraction
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CN105415828B (en
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陈一
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Guangdong Shunde PepsiCo New Material Co., Ltd
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Hunan University of Technology
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08L3/02—Starch; Degradation products thereof, e.g. dextrin
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/73—Hydrophobic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16—Fibres; Fibrils
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/04—Thermoplastic elastomer

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)

Abstract

The present invention relates to an elastic barrier environmental friendly composite film. The film is formed by multiple layers, and sequentially comprises a bottom-layer starch elastic film, a middle-layer polylactide strength elastic film, and an outer-layer starch elastic film. The film is characterized by further comprising inorganic fiber coatings and superhydrophobic coatings, wherein the inorganic fiber coatings are respectively arranged between the bottom-layer starch elastic film and the middle-layer polylactide strength elastic film and between the middle-layer polylactide strength elastic film and the outer-layer starch elastic film, and the superhydrophobic coatings are sprayed on the outsides of the bottom-layer starch elastic film and the outer-layer starch elastic film. The composite film has excellent strength, a certain elasticity and good thermal insulation and water resisting property, can be flameproof, and can be used for the field of high-grade film package.

Description

A kind of elasticity intercepts environmental protection composite membrane
Technical field
The present invention relates to a kind of preparation method of film, particularly relate to and a kind of there is certain resilience, good intensity and have the preparation method of environmental protection composite membrane of good waterproof, insulative properties.
Background technology
Although plastic material has more excellent performance and applicability widely; but it derives from oil product and cannot degrade; in crisis of resource and environmental pollution serious all the more today, find function admirable and reproducible alternative materials then becomes the most important thing of current Material Field research.
At present, film for packaging consumption is increasing, although and the plastic foil extensively adopted such as PE film, PP film, PET film etc. have good mechanical property, and prepare simple and easy, cannot degrade, cause serious white pollution.
In degradation material, starch is because of its cheap price and originate widely and furtherd investigate and prepared multiple life and industrial goods, as starch basement membrane, starch dishware etc. by modification and compound.But the defect that starch has it natural, its poor mechanical property, unstable properties, can only apply to the field low to mechanical property requirements.And the appearance of PLA changes this present situation.PLA (PLA) is aliphatic polyester, with lactic acid (2 hydroxy propanoic acid) for basic structural unit.PLA obtains by natural materials such as fermented maizes, and lactic acid polycondensation also can be adopted to obtain.PLA and end product thereof can become CO in natural decomposition under composting conditions 2and water, reducing solid waste discharge amount, is a kind of biogenic material of environmental protection.Although PLA has good biodegradability, machinability, excellent mechanical property, its property is crisp frangible, lacks flexibility and pliability, limits the application of polylactic acid membrane to a great extent.
With regard to film needs, except having higher requirements to mechanical property, also proposed functional requirement at some special dimension, as needed waterproof, trapping, antibacterial, antirust etc. at food and medicine packaging field, simple degradation material film is difficult to practical function.The multifunctional membrane of multi-layer co-extruded mode processability excellence is adopted to be a kind of means common in field of film preparation, a kind of medical multilayer co-extrusion film manufacturing method disclosed in CN104191584A, by the compound of interior sealing, core layer and heat-resistant layer, for film provides good mechanics and heat resistance.CN103481616A discloses a kind of antistatic PP TYPE and preparation method thereof, and this composite membrane adopts multiple obstruct anti-static material organic collocation melting co-extrusion film forming to make composite membrane be provided with excellent intensity and intercept antistatic behaviour.
By the mode that multilayer coordinates, the characteristic in conjunction with different layers superposes, and realizes comprising better intensity, toughness or other functional as a kind of beyond doubt in elasticity, barrier, anti-flammability etc. very simply method of practicality.
Summary of the invention
The object of the invention is in order to individual layer degradable membrane intensity difference, nonelastic and the defect of barrier cannot be realized, provide a kind of and there is excellent in strength, resilience and can realize the preparation method of obstruct, waterproof, fire-retardant composite membrane.
The object of the invention is to be achieved through the following technical solutions:
A kind of elasticity intercepts environmental protection composite membrane, is formed, comprise bottom starch elastic membrane, intermediate layer PLA strength, elastic film successively, outer starch elastic membrane by MULTILAYER COMPOSITE.Its feature also comprises: all have inorfil coating in the middle of bottom starch elastic membrane and intermediate layer PLA strength, elastic film, intermediate layer PLA strength, elastic film and outer starch elastic membrane, bottom starch elastic membrane and outer starch elastic membrane trypsin method have super-hydrophobic coat.
Further, described bottom starch elastic membrane and outer starch elastic membrane be with thermoplastic starch, thermoplastic elastomer (TPE), starch-grafted GMA, POSS grafted maleic anhydride for primary raw material, add a small amount of auxiliary agent and comprise antioxidant, waterproofing agent film extrusion.In major ingredient, the mass fraction of thermoplastic starch is between 45-60%, the mass fraction of thermoplastic elastomer (TPE) is between 25-40%, the mass fraction of starch-grafted GMA is between 10-20%, and the mass fraction of POSS grafted maleic anhydride is between 2-4%.The consumption adding antioxidant and waterproofing agent is between the 1-3% of major ingredient gross mass.
Wherein, described thermoplastic starch is the native starch for plastifying with plasticisers such as glycerine, and native starch can be the one in cornstarch, tapioca.Plasticiser consumption is the 20-35% of native starch quality.Preferably, native starch selects tapioca, and glycerine selected by plasticiser, and qualities of glycerin is 30% of tapioca.
Wherein, described thermoplastic elastomer (TPE) is TPUE (TPU), TPO (TPO) or EVA elastomer.Preferably, EVA elastomer is selected.
Wherein, the percent grafting of described starch-grafted GMA is between 45%-65%.
Wherein, described eight arm maleic anhydride POSS are the graft of POSS.
Polyhedral oligomeric silsesquioxane (POSS) is a kind of silica structure with octahedra cage structure, and POSS exists the radicals R that 8 can be carried out modification on the corner of cage structure.The molecular structural formula of eight arm maleic anhydride POSS involved in the present invention is:
Wherein, described antioxidant is 264, BHT, 168, and one or more arbitrary proportions mixing in 1010, waterproofing agent is calcium stearate.
Its processing method is:
(1) all raw materials are all descended vacuum drying 24 hours in 50 degree, for subsequent use;
(2) after thermoplastic starch, starch-grafted GMA, POSS grafted maleic anhydride high speed is blended, melt extrude, pelletizing obtains masterbatch A, and it melt extrudes temperature is 140-160 degree, screw speed is 150-200rad/min, and the time of staying is 1-2 minute;
(3), after masterbatch A and thermoplastic elastomer (TPE), antioxidant, waterproofing agent high speed is blended, by melt blending film extrusion, it melt extrudes temperature is 160-180 degree, and screw speed is 100-150rad/min, and the time of staying is 2-3 minute.
Further, described intermediate layer PLA strength, elastic film for primary raw material with PLA, toughening element, elastic component, glycidyl methacrylate graft PLA, adds a small amount of auxiliary agent and comprises antioxidant, waterproofing agent film extrusion.In major ingredient, the mass fraction of PLA is between 45-60%, and the mass fraction of toughening element is between 25-40%, and the mass fraction of elastic component is between 10-20%, and the mass fraction of glycidyl methacrylate graft PLA is between 2-4%.The consumption adding antioxidant and waterproofing agent is between the 1-3% of major ingredient gross mass.
Wherein, described PLA is poly (l-lactic acid), poly-D-ALPHA-Hydroxypropionic acid or poly-L, D-ALPHA-Hydroxypropionic acid composition.Its relative molecular mass, between 200000-500000, preferably, selects 300000-400000.
Wherein, described toughening element is the one in ethylene acrylic acid co polymer ethylene-vinyl acetate copolymer (EVA), ethylene acrylic acid co polymer (EAA).
Wherein, described elastic component is the one in TPV (TPV), SBS (SBS) or ethene-octene copolymer (POE).
Wherein, the grafting degree of described glycidyl methacrylate graft PLA is between 0.8%-2%
Wherein, described antioxidant is 264, BHT, 168, and one or more arbitrary proportions mixing in 1010.Waterproofing agent is calcium stearate.
Its processing method is: after PLA, toughening element, elastic component, glycidyl methacrylate graft PLA, antioxidant, waterproofing agent high speed is blended, by melt blending film extrusion, it melt extrudes temperature is 160-180 degree, screw speed is 100-150rad/min, and the time of staying is 2-3 minute.
Further, described inorfil coating is for mix with peculiar water base property bonding agent by the inorganic ultrafine fiber cotton in advance through special process manufacture processing, and after spraying, formation has the sprayed coating airtight without seam, monolithic stability of some strength and thickness after natural drying.This sprayed coating presents flexible natural texture and fiber quality, has insulation, shock-absorption sound-insulation, isolated steam and fireproof effect.
Further, described super-hydrophobic coat is a kind ofly make water droplet produce high contact angle thereon and be easy to the new coating material that tumbles, as some has the nano-substance of special construction.Can use existing super-hydrophobic coat on the market, as the TeflonAF super-hydrophobic coating material of E.I.Du Pont Company, domestic also many enterprises produce, prepared by the preparation method of the super-hydrophobic coat that domestic patent also can be used to record as CN101522822A.
Further, described bottom starch elastic membrane and intermediate layer PLA strength, elastic film, all with inorfil coating adhesion between intermediate layer PLA strength, elastic film and outer starch elastic membrane, edge is sealed by PUR.
Further, the thickness of described bottom starch elastic membrane, outer starch elastic membrane is between 0.2-0.4mm, and the thickness of intermediate layer PLA strength, elastic film is between 0.25-0.5mm, and the thickness of inorfil coating is between 0.1-0.2mm.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of embodiment 1.
Fig. 2 is the cross section structure schematic diagram of embodiment 2.
Detailed description of the invention
Below will describe illustrative embodiment of the present invention in detail.But these implementation methods are only exemplary object, and the present invention is not limited thereto.
Embodiment 1
With reference to Fig. 1, a kind of elasticity intercepts environmental protection composite membrane, is formed, comprise bottom starch elastic membrane 1, intermediate layer PLA strength, elastic film 3 successively, outer starch elastic membrane 5 by MULTILAYER COMPOSITE.Its feature also comprises: bottom starch elastic membrane and middle being provided with in the middle of inorfil coating 2, intermediate layer PLA strength, elastic film and outer starch elastic membrane of intermediate layer PLA strength, elastic film are provided with inorfil coating 4, and bottom starch elastic membrane 1 and outer starch elastic membrane 5 trypsin method have super-hydrophobic coat 6 and 7.
Described bottom starch elastic membrane 1 and outer starch elastic membrane 5 be with thermoplastic starch, TPUE, starch-grafted GMA, POSS grafted maleic anhydride for primary raw material, add a small amount of auxiliary agent and comprise antioxidant, waterproofing agent film extrusion.In major ingredient, the mass fraction of thermoplastic starch is 52%, and the mass fraction of TPUE is 35%, and the mass fraction of starch-grafted GMA is the mass fraction of 11%, eight arm maleic anhydride POSS is 3%.The consumption adding antioxidant and waterproofing agent is 2% of major ingredient gross mass.
Wherein, described thermoplastic starch is the tapioca for taking glycerine as plasticiser plasticizing, and glycerine consumption is 30% of tapioca quality.
Wherein, the percent grafting of described starch-grafted GMA is 52%.
Wherein, described antioxidant is 264, and waterproofing agent is calcium stearate.
Its processing method is: all raw materials are all descended vacuum drying 24 hours in 50 degree by (1), for subsequent use; (2) after thermoplastic starch, starch-grafted GMA, eight arm maleic anhydride POSS high speeds are blended, melt extrude, pelletizing obtains masterbatch A, and it melt extrudes temperature is 140-160 degree, screw speed is 180rad/min, and the time of staying is 1.5 minutes; (3), after masterbatch A and thermoplastic elastomer (TPE), antioxidant, waterproofing agent high speed is blended, by melt blending film extrusion, it melt extrudes temperature is 160-180 degree, and screw speed is 120rad/min, and the time of staying is 2.5 minutes.
Described intermediate layer PLA strength, elastic film 3 for primary raw material with PLA, EAA, SBS, glycidyl methacrylate graft PLA, adds a small amount of auxiliary agent and comprises antioxidant, waterproofing agent film extrusion.In major ingredient, the mass fraction of the mass fraction of PLA to be the mass fraction of 50%, EAA be 32%, SBS is 15%, and the mass fraction of glycidyl methacrylate graft PLA is 3%.The consumption adding antioxidant and waterproofing agent is 2% of major ingredient gross mass.
Wherein, described PLA is poly (l-lactic acid), and its relative molecular mass is between 300000-400000; The grafting degree of described glycidyl methacrylate graft PLA is between 1.4%; Described antioxidant is antioxidant BHT, and waterproofing agent is calcium stearate.
Its processing method is: after PLA, toughening element, elastic component, glycidyl methacrylate graft PLA, antioxidant, waterproofing agent high speed is blended, by melt blending film extrusion, it melt extrudes temperature is 160-180 degree, screw speed is 120rad/min, and the time of staying is 2.5 minutes.
Described inorfil coating is for being mixed with peculiar water base property bonding agent by the inorganic ultrafine fiber cotton in advance through special process manufacture processing, the sprayed coating formed after natural drying after spraying.
Described super-hydrophobic coat 6,7 adopts the TeflonAF super-hydrophobic coat of E.I.Du Pont Company.
Described bottom starch elastic membrane 1 and intermediate layer PLA strength, elastic film 3, all with inorfil coating adhesion between intermediate layer PLA strength, elastic film 3 and outer starch elastic membrane 5, edge is sealed by PUR.
The thickness of described bottom starch elastic membrane 1, outer starch elastic membrane 5 is 0.3mm, and the thickness of intermediate layer PLA strength, elastic film 3 is 0.35mm, and the thickness of inorfil coating 2,4 is 0.15mm.
Embodiment 2
With reference to Fig. 2, a kind of elasticity intercepts environmental protection composite membrane, is formed, comprise bottom starch elastic membrane 1 ', intermediate layer PLA strength, elastic film 3 ' successively, outer starch elastic membrane 5 ' by MULTILAYER COMPOSITE.Its feature also comprises: be provided with in the middle of bottom starch elastic membrane and intermediate layer PLA strength, elastic film in the middle of inorfil coating 2 ', intermediate layer PLA strength, elastic film and outer starch elastic membrane and be provided with inorfil coating 4 ', and bottom starch elastic membrane 1 ' and outer starch elastic membrane 5 ' trypsin method have super-hydrophobic coat 6 ' and 7 '.
Described bottom starch elastic membrane 1 ' and outer starch elastic membrane 5 ' be with thermoplastic starch, EVA, starch-grafted GMA, POSS grafted maleic anhydride for primary raw material, add a small amount of auxiliary agent and comprise antioxidant, waterproofing agent film extrusion.In major ingredient, the mass fraction of thermoplastic starch is the mass fraction of 55%, EVA is 30%, and the mass fraction of starch-grafted GMA is the mass fraction of 12%, eight arm maleic anhydride POSS is 3%.The consumption adding antioxidant and waterproofing agent is 2% of major ingredient gross mass.
Wherein, described thermoplastic starch is the tapioca for taking glycerine as plasticiser plasticizing, and glycerine consumption is 30% of tapioca quality.
Wherein, the percent grafting of described starch-grafted GMA is 58%.
Wherein, described antioxidant is 264, and waterproofing agent is calcium stearate.
Its processing method is: all raw materials are all descended vacuum drying 24 hours in 50 degree by (1), for subsequent use; (2) after thermoplastic starch, starch-grafted GMA, eight arm maleic anhydride POSS high speeds are blended, melt extrude, pelletizing obtains masterbatch A, and it melt extrudes temperature is 140-160 degree, screw speed is 180rad/min, and the time of staying is 1.5 minutes; (3), after masterbatch A and thermoplastic elastomer (TPE), antioxidant, waterproofing agent high speed is blended, by melt blending film extrusion, it melt extrudes temperature is 160-180 degree, and screw speed is 120rad/min, and the time of staying is 2.5 minutes.
Described intermediate layer PLA strength, elastic film 3 ' for primary raw material with PLA, EVA, POE, glycidyl methacrylate graft PLA, adds a small amount of auxiliary agent and comprises antioxidant, waterproofing agent film extrusion.In major ingredient, the mass fraction of the mass fraction of PLA to be the mass fraction of 50%, EVA be 32%, POE is 15%, and the mass fraction of glycidyl methacrylate graft PLA is 3%.The consumption adding antioxidant and waterproofing agent is 2% of major ingredient gross mass.
Wherein, described PLA is poly (l-lactic acid), and its relative molecular mass is between 250000-350000; The grafting degree of described glycidyl methacrylate graft PLA is 1.2%; Described antioxidant is antioxidant BHT, and waterproofing agent is calcium stearate.
Its processing method is: after PLA, toughening element, elastic component, glycidyl methacrylate graft PLA, antioxidant, waterproofing agent high speed is blended, by melt blending film extrusion, it melt extrudes temperature is 160-180 degree, screw speed is 120rad/min, and the time of staying is 2.5 minutes.
Described inorfil coating is for being mixed with peculiar water base property bonding agent by the inorganic ultrafine fiber cotton in advance through special process manufacture processing, the sprayed coating formed after natural drying after spraying.
Described super-hydrophobic coat 6 ', 7 ' adopts the TeflonAF super-hydrophobic coat of E.I.Du Pont Company.
Described bottom starch elastic membrane 1 ' and intermediate layer PLA strength, elastic film 3 ', all with inorfil coating adhesion between intermediate layer PLA strength, elastic film 3 ' and outer starch elastic membrane 5 ', edge is sealed by PUR.
The thickness of described bottom starch elastic membrane 1 ', outer starch elastic membrane 5 ' is 0.35mm, and the thickness of intermediate layer PLA strength, elastic film 3 ' is 0.3mm, and the thickness of inorfil coating 2 ', 4 ' is 0.15mm.

Claims (2)

1. elasticity intercepts an environmental protection composite membrane, is formed, comprise bottom starch elastic membrane, intermediate layer PLA strength, elastic film successively, outer starch elastic membrane by MULTILAYER COMPOSITE;
Its feature also comprises: all have inorfil coating in the middle of bottom starch elastic membrane and intermediate layer PLA strength, elastic film, intermediate layer PLA strength, elastic film and outer starch elastic membrane, bottom starch elastic membrane and outer starch elastic membrane trypsin method have super-hydrophobic coat;
Its feature also comprises: described bottom starch elastic membrane and outer starch elastic membrane are with thermoplastic starch, thermoplastic elastomer (TPE), starch-grafted GMA, POSS grafted maleic anhydride is primary raw material, add a small amount of auxiliary agent and comprise antioxidant, waterproofing agent film extrusion, in major ingredient, the mass fraction of thermoplastic starch is between 45-60%, the mass fraction of thermoplastic elastomer (TPE) is between 25-40%, the mass fraction of starch-grafted GMA is between 10-20%, the mass fraction of eight arm maleic anhydride POSS is between 2-4%, the consumption adding antioxidant and waterproofing agent is between the 1-3% of major ingredient gross mass,
Its feature also comprises: described intermediate layer PLA strength, elastic film is with PLA, toughening element, elastic component, starch-grafted GMA is primary raw material, add a small amount of auxiliary agent and comprise antioxidant, waterproofing agent film extrusion, in major ingredient, the mass fraction of PLA is between 45-60%, the mass fraction of toughening element is between 25-40%, the mass fraction of elastic component is between 10-20%, the mass fraction of starch-grafted GMA is between 2-4%, the consumption adding antioxidant and waterproofing agent is between the 1-3% of major ingredient gross mass,
Its feature also comprises: described bottom starch elastic membrane and intermediate layer PLA strength, elastic film, all with inorfil coating adhesion between intermediate layer PLA strength, elastic film and outer starch elastic membrane, edge is sealed by PUR.
2. a kind of elasticity as claimed in claim 1 intercepts environmental protection composite membrane, it is characterized in that: the thickness of described bottom starch elastic membrane, outer starch elastic membrane is between 0.2-0.4mm, the thickness of intermediate layer PLA strength, elastic film is between 0.25-0.5mm, and the thickness of inorfil coating is between 0.1-0.2mm.
CN201510419877.9A 2015-07-17 2015-07-17 A kind of environmentally friendly composite membrane of elasticity barrier Active CN105415828B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108115912A (en) * 2017-12-22 2018-06-05 福建恒安家庭生活用品有限公司 A kind of softness counterdie preparation method
CN111763354A (en) * 2020-07-27 2020-10-13 长沙柔织新材料科技有限公司 Heat-resistant modified thermoplastic starch packaging material and preparation method thereof
CN112026290A (en) * 2020-09-03 2020-12-04 湖南工业大学 Starch-protein-based composite membrane material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080038560A1 (en) * 2006-08-14 2008-02-14 Anthony Robert Knoerzer Environmentally-Friendly Multi-Layer Flexible Film Having Barrier Properties
CN104553212A (en) * 2015-01-13 2015-04-29 正业包装（中山）有限公司 Novel water-proof compression-resistant heat-insulating composite paperboard

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080038560A1 (en) * 2006-08-14 2008-02-14 Anthony Robert Knoerzer Environmentally-Friendly Multi-Layer Flexible Film Having Barrier Properties
CN104553212A (en) * 2015-01-13 2015-04-29 正业包装（中山）有限公司 Novel water-proof compression-resistant heat-insulating composite paperboard

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108115912A (en) * 2017-12-22 2018-06-05 福建恒安家庭生活用品有限公司 A kind of softness counterdie preparation method
CN111763354A (en) * 2020-07-27 2020-10-13 长沙柔织新材料科技有限公司 Heat-resistant modified thermoplastic starch packaging material and preparation method thereof
CN112026290A (en) * 2020-09-03 2020-12-04 湖南工业大学 Starch-protein-based composite membrane material
CN112026290B (en) * 2020-09-03 2022-07-19 湖南工业大学 Starch-protein-based composite membrane material

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