CN110239184A - A kind of biology base self-adhesion contraction barrier film - Google Patents

A kind of biology base self-adhesion contraction barrier film Download PDF

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Publication number
CN110239184A
CN110239184A CN201910484569.2A CN201910484569A CN110239184A CN 110239184 A CN110239184 A CN 110239184A CN 201910484569 A CN201910484569 A CN 201910484569A CN 110239184 A CN110239184 A CN 110239184A
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layer
additive
resin
degradation
controlled degradation
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CN201910484569.2A
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张建华
钟香玲
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Green Plastic Da (tianjin) Precision Machinery Technology Co Ltd
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Green Plastic Da (tianjin) Precision Machinery Technology Co Ltd
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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
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/098—Metal salts of carboxylic acids
    • 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
    • B32B2307/716—Degradable
    • B32B2307/7163—Biodegradable

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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)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention belongs to biology base degradation technique fields more particularly to a kind of biology base self-adhesion to shrink barrier film, including surface layer, middle layer, internal layer；The surface layer includes surface layer resin layer, surface layer additive layer, and the surface layer resin layer is polydactyl acid (SHQ-MLA) resin, and the surface layer additive layer is water-retaining property controlled degradation (BSZJ) additive；The middle layer includes middle layer resin layer, middle layer additive layer, the middle layer additive layer is located at the lower section of middle layer resin layer, the middle layer resin layer is oxygen-containing polymeric material controlled degradation (JHSZ) resin, and the middle layer additive layer is oxygen-containing polyolefin controlled degradation (HYZJ) additive；The internal layer includes inner layer resin layer, internal layer additive layer, the internal layer additive layer is located at the lower section of inner layer resin layer, the inner layer resin layer is oxygen-containing resin controlled degradation (YZSZ) resin, and the internal layer additive layer is oxidative biological controlled degradation (YHZJ) additive.

Description

A kind of biology base self-adhesion contraction barrier film
Technical field
The invention belongs to biology base degradation technique fields more particularly to a kind of biology base self-adhesion to shrink barrier film.
Background technique
With economic rapid development, people get worse the destruction of environment, especially nondegradable plastics, by people Arbitrarily throw out without care after, due to being not easy to be deposited in soil for a long time by soil microbial degradation, caused to ecological environment serious Pollution.Disposable tableware, Phthalates and agricultural mulching etc. are difficult to be recycled, traditional processing method with Based on burning and burying.Burning can generate a large amount of pernicious gas, pollute environment；It buries in the then polymer short time therein not It can be decomposed by the microorganisms, also pollute environment.The plastic foil of residual abandoning is present in soil, hinders the development of crop root system and to water Divide, the absorption of nutrient, reduces the gas permeability of soil, lead to crop production reduction；After movement eats the plastic foil of residual abandoning, it will cause intestines Obstruction and it is dead；The synthetic netting and fishline being lost in ocean or discard in ocean cause phase to marine organisms When harm, therefore advocate green consumption with reinforcement environmental protection it is imperative.
In order to reduce white pollution, preserving the ecological environment, people start to study degredation plastic, and the of research Generation degradative plastics is degradation plastic, and this degradation plastic is added to dropping for sub-fraction on the basis of original raw material It solves masterbatch or starch-based initial material, major part is not can be carried out degradation, be also unfavorable for the recycling and reconstruction of plastics；The of research Two generation degradative plastics are biology base controllable full-degradable plastics, and using resourceful, reproducible biomass as raw material, degradation process is green Color, cleaning also help the benign cycle in building soil and environmental system, are to alleviate oil crisis, eliminate having for white pollution Effect approach.
Currently, the biology base self-adhesion of practical application shrinks barrier film, degrade not thorough enough, implementation result is bad.
Summary of the invention
The present invention provides a kind of biology base self-adhesion contraction barrier film, to solve structure letter mentioned above in the background art It is single, not thorough enough problem of degrading.
Technical problem solved by the invention is realized using following technical scheme:
A kind of biology base self-adhesion contraction barrier film, including surface layer, middle layer, internal layer；
The surface layer includes surface layer resin layer, surface layer additive layer, and the surface layer additive layer is located at the lower section of surface layer resin layer, The surface layer resin layer is polydactyl acid (SHQ-MLA) resin, and the surface layer additive layer is water-retaining property controlled degradation (BSZJ) additive；
The middle layer includes middle layer resin layer, middle layer additive layer, and the middle layer additive layer is located at the lower section of middle layer resin layer, The middle layer resin layer is oxygen-containing polymeric material controlled degradation (JHSZ) resin, and the middle layer additive layer is that oxygen-containing polyolefin can Control degradation (HYZJ) additive；
The internal layer includes inner layer resin layer, internal layer additive layer, and the internal layer additive layer is located at the lower section of inner layer resin layer, The inner layer resin layer is oxygen-containing resin controlled degradation (YZSZ) resin, and the internal layer additive layer is oxidative biological controlled degradation (YHZJ) additive.
The percentage thickness on the surface layer is 15%, and the percentage thickness in the middle layer is 70%, the thickness hundred of the internal layer Divide than being 15%.
The percentage thickness of the surface layer resin layer is 90%, the percentage thickness of surface layer additive layer is 10%.
The percentage thickness of the middle layer resin layer is 95%, the percentage thickness of middle layer additive layer is 5%.
The percentage thickness of the inner layer resin layer is 85%, the percentage thickness of internal layer additive layer is 15%.
Water-retaining property controlled degradation (BSZJ) additive, oxygen-containing polyolefin controlled degradation (HYZJ) additive, oxidation life Object controlled degradation (YHZJ) additive is equal are as follows: ferric stearate.
The invention has the benefit that
It can not only be realized by the technical program degradable, and implementation result is ideal, and specific ingredient effect is such as Under:
1 polydactyl acid (SHQ-MLA) resin: being the modification to polylactic resin, and polylactic resin belongs to polyester family, be with Lactic acid is the polymer that main polymerizable raw material obtains, and raw material sources are abundant and can regenerate, and is mainly original with corn, cassava etc. Material, polylactic resin embrittlement itself, suppleness is poor, solves the problems, such as polylactic acid embrittlement by modification, improves suppleness；Change Property after polylactic resin be a kind of novel biodegradation material, safety and compatibility is good and petrochemical industry synthetic plastic Basic physical properties are similar, and mechanical performance and physical property are good, have most good tensile strength and extensibility；Poly- cream after improvement Acid resin has oneself unique characteristic, and intensity, transparency are strong to the resistivity of climate change, it may have the spy of smell is isolated Property；Polylactic resin after improvement is mainly used for making farm-oriented mulch, shopping bag, plastic bag, refuse bag, daily necessities bag, controllability The different kind organisms degradable package products such as barrier bag of degrading.
2 oxygen-containing polymeric material controlled degradation (JHSZ) resins: degradation modification is added in degradative plastics process of producing product Resin makes all kinds of non-degradable plastic products become controllable degradable plastic products, has used the degradation of degradation modification resin Plastic products are when being exposed in sunlight, high temperature or external force, it will degradation, and degradation time and speed are controllable.It is triple Controlled degradation resin is in degradative plastics production process, using multi-layer co-extruded moulding process, by the degradative resin of opposed polarity, Using special process co-extrusion working chamber, effectively Compost Biodegradation and oxidative biodegradation are combined together, really realized Controlled degradation and degradable property.Triple controlled degradation non-toxics, comestible contact, processability is strong, can be with major part Material compatible, controlled degradation control degradation time according to necessary requirement, and 100% environmental degradability is fully converted to water, two Carbonoxide and organic matter, will not be harmful to environment or soil, and cost performance is high, and compared with other degradation techniques, cost is relatively low.Three Weight controlled degradation resin is mainly used for refuse disposal system, packing business, agricultural, compost and plastics manufacturing industry, and it is each to be suitable for production Class degradative plastics product, such as farm-oriented mulch, drip irrigation zone, shopping bag, plastic bag, refuse bag, courier bag, mess-tin.
3 oxygen-containing resin controlled degradation (YZSZ) resins: being added degradation modification resin in degradative plastics process of producing product, So that all kinds of non-degradable plastic products is become controllable degradable plastic products, uses the degradative plastics system of degradation modification resin Product are when being exposed in sunlight, high temperature or external force, it will degradation, and degradation time and speed are controllable.Triple controllable drops Resin is solved in degradative plastics production process, the degradative resin of opposed polarity is utilized by spy using multi-layer co-extruded moulding process Compost Biodegradation and oxidative biodegradation, are effectively combined together by different technique co-extrusion working chamber, really realize that degradation can Control property and degradable property.Triple controlled degradation non-toxics, comestible contact, processability is strong, can be with most of material phase Hold, controlled degradation controls degradation time according to necessary requirement, and 100% environmental degradability is fully converted to water, carbon dioxide And organic matter, it will not be harmful to environment or soil, cost performance is high, and compared with other degradation techniques, cost is relatively low.It is triple controllable Degradative resin is mainly used for refuse disposal system, packing business, agricultural, compost and plastics manufacturing industry, is suitable for making all kinds of degradations Plastic products, such as farm-oriented mulch, drip irrigation zone, shopping bag, plastic bag, refuse bag, courier bag, mess-tin.
4 are added degradant additive by proportion in material modification production process, and various modified resins is made to become controllably dropping The modified resin raw material of solution, is added degradant additive in degradation products production process, becomes all kinds of non-degradable plastic products Controllable completely degradable plastic product；Degradant additive is added in resin in plastic product production process, and without changing life Equipment and program are produced, the degradative plastics product of degradant additive is added to, when being exposed in sunlight, high temperature or external force, It will degrade, and degradation time and speed are controllable；Degradant additive is non-toxic, and comestible contact, processability is strong, can be with big portion Point material compatible, controlled degradation control degradation time according to necessary requirement, 100% environmental degradability, be fully converted to water, Carbon dioxide and organic matter, will not be harmful to environment or soil, and cost performance is high, and compared with other degradation techniques, cost is relatively low； Degradant additive is mainly used for refuse disposal system, packing business, agricultural, compost and plastics manufacturing industry, is suitable for making all kinds of drops Solve plastic products, such as farm-oriented mulch, drip irrigation zone, shopping bag, plastic bag, refuse bag, courier bag, mess-tin.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
In figure: the surface layer 1-, the middle layer 2-, 3- internal layer, the surface layer 4- resin layer, the surface layer 5- additive layer, the middle layer 6- resin layer, the middle layer 7- Additive layer, 8- inner layer resin layer, 9- internal layer additive layer.
Specific embodiment
A kind of biology base self-adhesion contraction barrier film, including surface layer 1, middle layer 2, internal layer 3；
Surface layer 1 includes surface layer resin layer 4, surface layer additive layer 5, and surface layer additive layer 5 is located at the lower section of surface layer resin layer 4, table Layer resin layer 4 is polydactyl acid (SHQ-MLA) resin, and surface layer additive layer 5 is water-retaining property controlled degradation (BSZJ) additive；
Middle layer 2 includes middle layer resin layer 6, middle layer additive layer 7, and middle layer additive layer 7 is located at the lower section of middle layer resin layer 6, in Layer resin layer 6 is oxygen-containing polymeric material controlled degradation (JHSZ) resin, and middle layer additive layer 7 is oxygen-containing polyolefin controlled degradation (HYZJ) additive；
Internal layer 3 includes inner layer resin layer 8, internal layer additive layer 9, and internal layer additive layer 9 is located at the lower section of inner layer resin layer 8, interior Layer resin layer 8 is oxygen-containing resin controlled degradation (YZSZ) resin, and internal layer additive layer 9 is that oxidative biological controlled degradation (YHZJ) adds Add agent.
The percentage thickness on surface layer 1 is 15%, and the percentage thickness in middle layer 2 is 70%, and the percentage thickness of internal layer 3 is 15%.
The percentage thickness of surface layer resin layer 4 is 90%, the percentage thickness of surface layer additive layer 5 is 10%.
The percentage thickness of middle layer resin layer 6 is 95%, the percentage thickness of middle layer additive layer 7 is 5%.
The percentage thickness of inner layer resin layer 8 is 85%, the percentage thickness of internal layer additive layer 9 is 15%.
Water-retaining property controlled degradation (BSZJ) additive, oxygen-containing polyolefin controlled degradation (HYZJ) additive, oxidation life Object controlled degradation (YHZJ) additive is equal are as follows: ferric stearate.
The technical program uses binary process forming technique, refers on the basis of unitary technological forming (Recipe), Increase moulding process, unitary Recipe can only occupy 50% technology content in process of producing product, in addition binary at Type technique could improve the basic fundamental guarantee of product, be mainly reflected in the thinned of product and thicken, and enhancing is thinned, effectively drops Low cost improves occupation rate of market.
Binary process forming technique includes: unitary Recipe, binary moulding process.
Unitary Recipe includes:
1 oxygen-containing polyolefin controlled degradation material prescription technique；2 oxidative biological controlled degradation material prescription techniques；
3PVA biology base controlled degradation material prescription technique；4PBAT biology base controlled degradation material prescription technique；
5 triple controlled degradation technical formula techniques；6 quadruple controlled degradation technical formula techniques；
7 five heavy controlled degradation technical formula techniques；8 sixfold controlled degradation technical formula techniques；
9 three layers of water-retaining type controlled degradation technical formula technique.
Binary moulding process includes:
1 vacuum sizing moulding process；2 intelligent weighing system moulding process；
3 interlayer material controlling intelligent control moulding process；4 intelligent control thickness moulding process；
5 intelligent control width moulding process；6 intelligence correction moulding process；
7 liang of bubble method moulding process；8 three bubble method moulding process；
9 four bubble method moulding process；10 puma manipulator automatic winding moulding process.
Principle:
Biology base controllable full-degradable plastics can be divided into starch, polyesters and other classes according to raw material point；
Starch is abundance, cheap natural macromolecular material, and native starch is small for having crystalline texture with inside Existing for granular state, molecular structure has straight chain and two kinds of branch.For different plant varieties, the form of starch granules, Size and the ratio of amylose and amylopectin content are all different.The partial size of starch granules is mostly at 15-100 μm. The chain compound that the glucose of amylose is combined with α-D-1,4 glycosidic bonds, relative molecular mass are (20-200) x104.Branch The connection type of each glucose unit removes α-D-1 in chain starch, and outside 4 glycosidic bonds, there is also α-D-1,6 glycosidic bonds, average moleculars Quality is (100-400) x106.The property of starch and relative molecular mass, branch lengths and the amylose and branch of starch The ratio of chain starch is related.The starch of high amylose content has preferable mechanical performance more suitable for preparing plastics, resulting product. Native starch is intermolecular, and there are hydrogen bonds, and dissolubility is very poor, hydrophilic but not soluble easily in water, it has highly polar crystallographic property. Since there are strong hydrogen bonding effects between the macromolecule of native starch, it is difficult to direct machine-shaping.To improve its process industrial art performance, one As be by open starch interchain hydrogen bond, make starch lose crystallization method realize.There are two types of its operating methods, and one is add Hot water content is greater than 90% starch solution, and starch granules is 60~70oStart to be swollen between C, reaches 90 in temperatureoStarch after C Particle starts to burst apart, and macromolecule interchain hydrogen bond is opened, and generates gelation；Another kind is heated under air-tight state, is plasticated crowded Starch of the water content less than 28% out.
Polylactic acid (PLA) is also referred to as polylactide, belongs to polyester family, and structural formula is (- O-CHCH3-CO-) n.
The most important two kinds of polymerizations of polylactic acid are direct polymerization method and ring-opening polymerisation method.Direct polymerization method is typical Polycondensation reaction.Using the activity of lactic acid, by heating, dehydration condensation occurs between lactic acid molecules, obtains polylactic acid.It is directly poly- Legal simple production process, production cost is low, is not required to the intermediate of reaction to be separated.But the molecular weight of polylactic acid is lower, molecule Measure distributed more widely, performance is poor.Lactide ring-opening polymerisation method produces polylactic acid using two-step method.It is cyclized and is made by acid by dehydrating lactic first Then polylactic acid is made by refined lactide ring-opening polymerisation again in lactide.Polylactic acid physical force made from ring-opening polymerisation method Better performances are learned, the production cost of the method is higher than direct polymerization method.
The degradation of polylactic acid is divided into simple hydrolysis (acid-base catalysis) and enzymatic hydrolysis degradation.The principal degradation side of polylactic acid Formula is bulk erosion.Hydrophobic polymer becomes low relative molecular weight, water by the hydrolysis of labile bond on main chain (C-O key) Then soluble molecule and monomer are further degraded to water and carbon dioxide under the action of enzyme.The degradation of polylactic acid right and wrong first The hydrolysis of crystalline region, followed by crystalline region.Hydrolysis can because carboxyl there are due to accelerate.There are autocatalysis inside polylactic acid, Inside degradation speed specific surface it is fast.When degrading beginning, the hydrolysis of ester bond is isotropic in matrix.In degradation process In, carboxyl end group is to having hydrolyzed catalytic action.With the progress of degradation, carboxyl end group amount increases, and degradation rate is accelerated.
Earthworm acute toxicity test
1. test is summarized
Earthworm toxicity test compares test with degradation compost and standard compost, detects the degradation containing oxidized-biodegradable plastic Toxic effect of the compost to earthworm.Degradation oxidized-biodegradable plastic usually contained after biodegrade various metabolites, The undegraded complete product in part and inorganic matter.
The artificial soil of accurate formulation and compost are mixed to the survival soil of crop earthworm by different proportion.By 14 days Test, assesses the Survival of earthworm.The assessment of compost toxicity is with earthworm in degradation compost soil and in standard pile fertile soil The variation of survival rate and weight measure.
2. test specification
This test uses the OECD chemicals test rule #207 " earthworm acute toxicity test " of OECD.
3. test procedure
(1) test uses the glass jar of 1000ml, and the compost soil mixture of 750g is packed into wherein.Each mixing match does 4 A repetition.
(2) before earthworm is put into glass jar, earthworm is placed in artificial soil 24 hours.It weighs, is put into each tank 10 earthworms, earthworm are placed on the top of compost soil mixture.
(3) the foraminate plastic membrane sealing of all test tanks, being placed on temperature is 22 ± 2oThe interior of C, continuous light It is 400 ~ 800 luxs according to intensity.Within experimental period, if it is desired, suitable water can be added into tank.
(4) test carries out 14 days.Measure earthworm survival rate and the weight in every tank.Record any abnormal conditions of earthworm.
4. testing program
Range determines the appropriate ratio tested and determine compost soil first.Following ratios can be selected and carry out survival rate test:
Trial test shows that survival rate of the earthworm in artificial soil, 20% standard compost and 40% standard compost is 100%, 80% standard Survival rate in compost is less than 100%.
Test terminates after 14 days.In earthworm acute toxicity test, the survival rate of earthworm is the finger of the most critical of this test Mark.From the point of view of test result, all three (60%, 80%, 100%) degradation compost soil is compared with standard pile fertile soil, earthworm For survival rate without detrimental effect, survival rate is slightly above its contrast groups.
The embodiments of the present invention have been described in detail above, but content is only the preferred embodiment of the present invention, It should not be considered as limiting the scope of the invention, any changes and modifications in accordance with the scope of the present application, It should still be within the scope of the patent of the present invention.

Claims (6)

1. a kind of biology base self-adhesion shrinks barrier film, it is characterised in that:
Including surface layer, middle layer, internal layer；
The surface layer includes surface layer resin layer, surface layer additive layer, and the surface layer additive layer is located at the lower section of surface layer resin layer, The surface layer resin layer is polydactyl acid (SHQ-MLA) resin, and the surface layer additive layer is water-retaining property controlled degradation (BSZJ) additive；
The middle layer includes middle layer resin layer, middle layer additive layer, and the middle layer additive layer is located at the lower section of middle layer resin layer, The middle layer resin layer is oxygen-containing polymeric material controlled degradation (JHSZ) resin, and the middle layer additive layer is that oxygen-containing polyolefin can Control degradation (HYZJ) additive；
The internal layer includes inner layer resin layer, internal layer additive layer, and the internal layer additive layer is located at the lower section of inner layer resin layer, The inner layer resin layer is oxygen-containing resin controlled degradation (YZSZ) resin, and the internal layer additive layer is oxidative biological controlled degradation (YHZJ) additive.
2. a kind of biology base self-adhesion according to claim 1 shrinks barrier film, it is characterised in that: the thickness hundred on the surface layer Divide than being 15%, the percentage thickness in the middle layer is 70%, and the percentage thickness of the internal layer is 15%.
3. a kind of biology base self-adhesion according to claim 1 shrinks barrier film, it is characterised in that: the surface layer resin layer Percentage thickness is 90%, the percentage thickness of surface layer additive layer is 10%.
4. a kind of biology base self-adhesion according to claim 1 shrinks barrier film, it is characterised in that: the middle layer resin layer Percentage thickness is 95%, the percentage thickness of middle layer additive layer is 5%.
5. a kind of biology base self-adhesion according to claim 1 shrinks barrier film, it is characterised in that: the inner layer resin layer Percentage thickness is 85%, the percentage thickness of internal layer additive layer is 15%.
6. a kind of biology base self-adhesion according to claim 1 shrinks barrier film, it is characterised in that: the water-retaining property controllably drops It is equal to solve (BSZJ) additive, oxygen-containing polyolefin controlled degradation (HYZJ) additive, oxidative biological controlled degradation (YHZJ) additive Are as follows: ferric stearate.
CN201910484569.2A 2019-06-05 2019-06-05 A kind of biology base self-adhesion contraction barrier film Withdrawn CN110239184A (en)

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Application publication date: 20190917