CN107696622A - A kind of environmentally-friendly plastic composite construction of high-barrier compost and preparation method thereof - Google Patents
A kind of environmentally-friendly plastic composite construction of high-barrier compost and preparation method thereof Download PDFInfo
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- CN107696622A CN107696622A CN201710960829.XA CN201710960829A CN107696622A CN 107696622 A CN107696622 A CN 107696622A CN 201710960829 A CN201710960829 A CN 201710960829A CN 107696622 A CN107696622 A CN 107696622A
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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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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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
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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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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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
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
-
- 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
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- 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
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- 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
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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)
- Wrappers (AREA)
- Biological Depolymerization Polymers (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention relates to a kind of environmentally-friendly plastic composite construction of high-barrier compost, the environmentally-friendly plastic composite construction includes barrier layer ethylene-vinyl alcohol copolymer or the compounding mixture of polyamide and biodegradable strata lactic acid and poly butylene succinate positioned at the barrier layer both sides, the polyolefin modified resin of tack coat is set between the biodegradable layer and the barrier layer, so that the composite construction has good barrier properties for gases, and compost, processing characteristics is good, and heat resistance is good.When preparing the environmentally-friendly plastic composite construction, it is made after each layer raw material components are well mixed respectively through multi-screw extruder coextru-lamination, or directly replicate the film of above material by dry, or directly injection is made after ejection formation after each layer raw material components are well mixed respectively；The more single PLA of environmentally-friendly plastic composite construction processing characteristics and heatproof degree improves significantly, and is more favorable for popularization and use of the composite construction in packaging field.
Description
Technical field
The present invention relates to composite construction technical field, and in particular to a kind of environmentally-friendly plastic composite construction of high-barrier compost
And preparation method thereof.
Background technology
In general, food easy oxidation deterioration in storing process.In order that food can save and not degenerate for a long time, lead to
The packaging for often being difficult to penetrate using oxygen is preserved, e.g., tinplate metal can or vial；Or anti-corrosion is added in food
Agent, prevent food spoilage.But the easy corrosion of metal can, content can not be observed, while metal detection can not be also carried out, carry
High security.Vial is although it is observed that the situation of content, but vial weight weight itself, increases cost of transportation, simultaneously
It is again frangible in transportation.Therefore, increasing plastic packing product is in alternative metals packaging and glass packaging.
At present, increasing plastic products are applied in packaging, but most general-purpose plastics does not possess the resistance of gas
Every property, gas, especially oxygen can not be completely cut off and entered in packaging.The entrance of oxygen causes the oxidation deterioration of food, makes food
Shortened shelf life, while flavour of food products mouthfeel generates change.
To solve this problem, food production producer often extends the shelf-life of food by addition preservative.But add
Preservative prevents food spoilage from not only being had a certain impact to the flavor of food, and the hidden danger of food security be present, to human body
There is harm.
To solve the problems, such as oxygen transmission, the kind for also having part different qualities in plastics a, part has good gas
Body barrier properties, oxygen is set can not almost to pass through.Such as ethylene-vinyl alcohol copolymer, under same thickness, its gas permeation rate is
Polyacrylic three one thousandth；For example polyamide (MX6) also has the gas barrier for the ethylene-vinyl alcohol copolymer that can match in excellence or beauty
Property.
Therefore, in American-European countries, ethylene-vinyl alcohol copolymer and polyamide (MX6) conduct are widely used in Japan
Gas barrier material, by ethylene-vinyl alcohol copolymer or polyamide (MX6) and other general-purpose plastics, such as polypropylene, gather
Styrene etc. into composite, makes composite have good barrier properties for gases by co-extrusion or dry complex, this kind of form
Packaging be widely used in packaging for foodstuff and other such as perfume packaging on.
But under a large amount of plastics packed applications, discarded plastics package sharply increases, and general common plastics are in nature
It is difficult to degrade, general degradation cycle is 200 to 400 years.Abandoned plastic garbage not only serious damage to the environment, causes soil to dislike
Change, influence plant growth, can also cause that livestock is sick or even dead, and plastic garbage is thrown into river, lake after being eaten by mistake by livestock
Shipping can be influenceed again, water quality is degenerated.To prevent these problems, burning processing is carried out, it is harmful that bioxin etc. may be produced again
Material, people and animals are caused with bigger harm.Especially in recent years, the high speed development of net purchase express delivery industry and network food delivery industry, makes
Into a large amount of generations of plastic garbage, caused more because degradation cycle needs 200 to 400 years, therefore to earth environment protection
Big pressure.
To solve this problem, the resin with Biodegradable as PLA has in recent years progressively been used to replace
The general-purpose plastics resin used always.PLA derives from plant, and starch material is made as caused by corn, and starch is by sugar
Change after fermentation and obtain lactic acid, lactic acid produces PLA by polycondensation polymerization again.PLA has the characteristic of biological compost.Use
PLA as packaging material, under the water, light, heat condition of natural environment can with natural degradation, ultimately form carbon dioxide and
Water, do not remained in nature.
But PLA has higher modulus of elasticity, and hardness is high, and the degrees centigrade of heatproof 60, difficulty of processing is higher, is processed as
After product, performance is also unstable, easily deforms in transit, and material becomes fragile, and what these problems limited PLA enters one
Step application.
The content of the invention
In order to solve above mentioned problem existing for prior art, the invention provides a kind of processability is good, temperature tolerance is good, high resistant
Every environmentally-friendly plastic composite construction of compost and preparation method thereof.
The technical solution adopted in the present invention is：
A kind of environmentally-friendly plastic composite construction of high-barrier compost, including barrier layer and positioned at the barrier layer both sides
Biodegradable layer, sets tack coat between the biodegradable layer and the barrier layer, the barrier layer is total to for ethylene-vinyl alcohol
Polymers or polyamide, the biodegradable layer are the compounding mixture of PLA and poly butylene succinate, described viscous
Knot layer is polyolefin modified resin.
Poly butylene succinate is synthesized into by succinic acid and butanediol through condensation polymerization, and resin is creamy white, odorless
It is tasteless, easily decomposed by the enzyme in the multiple-microorganism or animal and plant body of nature, metabolism, be finally decomposed to carbon dioxide and water,
It is typical fully biodegradable polymeric material.Its belong to thermoplastic resin, processing characteristics is good, can common process into
Carrying out processing and forming in type equipment, 1401260 DEG C of processing temperature scope, for physical property similar to polyvinyl resin, heat resistance is good,
Heat distortion temperature and product temperature in use can be more than 100 DEG C.Mixed by PLA with the compounding of poly butylene succinate,
The effective physical property for improving PLA, is coordinated by different ratios, mixture is had different physical characteristics, poly- fourth
The ratio of succinate adipate is bigger, and physical property is closer to vinyon.Both compounding mixtures have compared with PLA
More preferable processability, while heat resistance is effectively improved, it is more suitable for packing in product.
The barrier layer, the tack coat, the ratio between the thickness of the biodegradable layer are 1-15:1-10:75-98.
The thickness of the barrier layer is 2-300 μm.
The thickness of the tack coat is 2-300 μm.
The thickness of the biodegradable layer is 30-2700 μm.
PLA and poly butylene succinate mass ratio are 1 in the biodegradable layer:9-9:1.
The polyolefin modified resin is polyvinyl modified resin or polypropylene modification resin.
The thickness of the environmentally-friendly plastic composite construction is 30-3000 μm.
The preparation method of the environmentally-friendly plastic composite construction of the high-barrier compost, comprises the following steps：
Each film layer component is taken, it is uniform in stirrer for mixing respectively, it is compound that the environmentally-friendly plastic is produced after coextru-lamination
Structure, corresponding finished product further is made in environmentally-friendly plastic composite construction progress plastics sucking moulding.
The preparation method of the environmentally-friendly plastic composite construction of another high-barrier compost, comprises the following steps：
Each film layer component is taken, it is uniform in stirrer for mixing respectively, directly it is molded after ejection formation, produces the environmental protection
Plastic composite structure.
The preparation method of the environmentally-friendly plastic composite construction of another high-barrier compost, comprises the following steps：
Each film layer component is taken, each film is made respectively, film is carried out afterwards and does again, produce the environmentally-friendly plastic composite junction
Structure；Environmentally-friendly plastic composite construction progress blow molding is further obtained into corresponding finished product.
Beneficial effects of the present invention are：
The environmentally-friendly plastic composite construction of high-barrier compost of the present invention, including barrier layer ethylene vinyl alcohol copolymer
Thing or polyamide and biodegradable strata lactic acid and poly butylene succinate positioned at the barrier layer both sides are answered
With mixture, the polyolefin modified resin of tack coat is set so that described compound between the biodegradable layer and the barrier layer
Structure has good barrier properties for gases, and compost, and processing characteristics is good, and heat resistance is good.The environmentally-friendly plastic is prepared to answer
When closing structure, plastics sucking moulding system is carried out after each film layer raw material components are well mixed respectively after multi-screw extruder coextru-lamination
, or directly replicate the film of above material by dry, or pass through injection after each layer raw material components are well mixed respectively
Directly injection is made after shaping；The more single PLA of processing characteristics and heatproof degree of the environmentally-friendly plastic composite construction has
It is obvious to improve, it is more favorable for popularization and use of such composite construction in packaging field.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the environmentally-friendly plastic composite construction of high-barrier compost described in embodiment 1.
1- barrier layers in figure, 2- biodegradation layers, 3- tack coats.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical scheme will be carried out below
Detailed description.Obviously, described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are resulting on the premise of creative work is not made to be owned
Other embodiment, belong to the scope that the present invention is protected.
Embodiment 1
The present embodiment provides a kind of environmentally-friendly plastic composite construction of high-barrier compost, as shown in figure 1, including barrier layer with
And the biodegradable layer positioned at the barrier layer both sides, tack coat is set between the biodegradable layer and the barrier layer, institute
It is ethylene-vinyl alcohol copolymer to state barrier layer, and the biodegradable layer mixes for the compounding of PLA and poly butylene succinate
Compound, PLA and poly butylene succinate mass ratio are 1 in the biodegradable layer:9, the tack coat is polyethylene
Modified resin.
The thickness of the barrier layer is 2 μm, and the thickness of the tack coat is 2 μm, and the thickness of the biodegradable layer is 30 μ
m。
The preparation method of the environmentally-friendly plastic composite construction of the high-barrier compost, comprises the following steps：
Each film layer component is taken, it is uniform in stirrer for mixing respectively, the environmentally-friendly plastic composite construction is produced, further will
The environmentally-friendly plastic composite construction carries out plastics sucking moulding and corresponding finished product is made.
Embodiment 2
The present embodiment provides a kind of environmentally-friendly plastic composite construction of high-barrier compost, including barrier layer and positioned at described
The biodegradable layer of barrier layer both sides, sets tack coat between the biodegradable layer and the barrier layer, the barrier layer is
Ethylene-vinyl alcohol copolymer, the biodegradable layer are the compounding mixture of PLA and poly butylene succinate, the life
PLA and poly butylene succinate mass ratio are 9 in thing degraded layer:1, the tack coat is polypropylene modification resin.
The thickness of the barrier layer is 300 μm, and the thickness of the tack coat is 300 μm, the thickness of the biodegradable layer
For 2700 μm.
The preparation method of the environmentally-friendly plastic composite construction of the high-barrier compost, comprises the following steps：
Each film layer component is taken, it is uniform in stirrer for mixing respectively, directly it is molded after ejection formation, produces the environmental protection
Plastic composite structure product.
Embodiment 3
The present embodiment provides a kind of environmentally-friendly plastic composite construction of high-barrier compost, including barrier layer and positioned at described
The biodegradable layer of barrier layer both sides, sets tack coat between the biodegradable layer and the barrier layer, the barrier layer is
Polyamide, the biodegradable layer are the compounding mixture of PLA and poly butylene succinate, the biodegradation
PLA and poly butylene succinate mass ratio are 5 in layer:5, the tack coat is polyvinyl modified resin.The barrier
The thickness of layer is 100 μm, and the thickness of the tack coat is 100 μm, and the thickness of the biodegradable layer is 1000 μm.
The preparation method of the environmentally-friendly plastic composite construction of the high-barrier compost, comprises the following steps：
Each film layer component is taken, each film is made respectively, film is carried out afterwards and does again, produce the environmentally-friendly plastic composite junction
Structure；Environmentally-friendly plastic composite construction progress blow molding is further obtained into corresponding finished product.
Embodiment 4
The present embodiment provides a kind of environmentally-friendly plastic composite construction of high-barrier compost, including barrier layer and positioned at described
The biodegradable layer of barrier layer both sides, sets tack coat between the biodegradable layer and the barrier layer, the barrier layer is
Polyamide, the biodegradable layer are the compounding mixture of PLA and poly butylene succinate, the biodegradation
PLA and poly butylene succinate mass ratio are 7 in layer:3, the tack coat is polypropylene modification resin.
The thickness of the barrier layer is 150 μm, and the thickness of the tack coat is 150 μm, the thickness of the biodegradable layer
For 1500 μm.
The preparation method of the environmentally-friendly plastic composite construction of the high-barrier compost, comprises the following steps：
Each film layer component is taken, each film is made respectively, film is carried out afterwards and does again, produce the environmentally-friendly plastic composite junction
Structure；Environmentally-friendly plastic composite construction progress blow molding is further obtained into corresponding finished product.
Embodiment 5
The present embodiment provides a kind of environmentally-friendly plastic composite construction of high-barrier compost, including barrier layer and positioned at described
The biodegradable layer of barrier layer both sides, sets tack coat between the biodegradable layer and the barrier layer, the barrier layer is
Ethylene-vinyl alcohol copolymer, the biodegradable layer are the compounding mixture of PLA and poly butylene succinate, the life
PLA and poly butylene succinate mass ratio are 3 in thing degraded layer:7, the tack coat is polyvinyl modified resin.
The thickness of the barrier layer is 200 μm, and the thickness of the tack coat is 200 μm, the thickness of the biodegradable layer
For 2000 μm.
The preparation method of the environmentally-friendly plastic composite construction of the high-barrier compost, comprises the following steps：
Each film layer component is taken, each film is made respectively, film is carried out afterwards and does again, produce the environmentally-friendly plastic composite junction
Structure；Environmentally-friendly plastic composite construction progress blow molding is further obtained into corresponding finished product.
Experimental example
Mixed by PLA with the compounding of poly butylene succinate, effectively improve the physical property of PLA, led to
Cross different ratios to coordinate, make mixture that there are different physical characteristics, the ratio of poly butylene succinate is bigger, physical property
Closer to vinyon.Both compounding mixtures have more preferable processability compared with PLA, while effectively improve resistance to
Warm nature energy, it is more suitable for packing in product, performance test results are as shown in table 1.
It should be noted that the performance that PLA forms compounding mixture with poly butylene succinate can be directly as ring
Protect the performance reference of plastic composite structure, in other words, the performance 90% of the environmentally-friendly plastic composite construction more depending on
PBS/PLA compounds the performance of mixture, and mixing ratio of the performance parameter of product in table 1 can produce respective change.
Table 1- different proportions PLA forms the performance detection of compounding mixture with poly butylene succinate
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of environmentally-friendly plastic composite construction of high-barrier compost, it is characterised in that including barrier layer and positioned at the resistance
The biodegradable layer of interlayer both sides, sets tack coat between the biodegradable layer and the barrier layer, the barrier layer is second
Alkene-ethenol copolymer or polyamide, the biodegradable layer mix for the compounding of PLA and poly butylene succinate
Compound, the tack coat are polyolefin modified resin.
2. the environmentally-friendly plastic composite construction of high-barrier compost according to claim 1, it is characterised in that the barrier
Layer, the tack coat, the ratio between the thickness of the biodegradable layer are 1-15:1-10:75-98.
3. the environmentally-friendly plastic composite construction of high-barrier compost according to claim 1, it is characterised in that the barrier layer
Thickness be 2-300 μm.
4. the environmentally-friendly plastic composite construction of high-barrier compost according to claim 1, it is characterised in that the tack coat
Thickness be 2-300 μm.
5. the environmentally-friendly plastic composite construction of high-barrier compost according to claim 1, it is characterised in that the biology drop
The thickness for solving layer is 30-2700 μm.
6. the environmentally-friendly plastic composite construction of high-barrier compost according to claim 1, it is characterised in that the biology drop
It is 1 to solve PLA and poly butylene succinate mass ratio in layer:9-9:1.
7. the environmentally-friendly plastic composite construction of high-barrier compost according to claim 1, it is characterised in that the polyolefin
Modified resin is polyvinyl modified resin or polypropylene modification resin.
8. a kind of method for the environmentally-friendly plastic composite construction for preparing any one of the claim 1-7 high-barrier composts, it is special
Sign is, comprises the following steps：
Each film layer component is taken, it is uniform in stirrer for mixing respectively, through coextru-lamination, produce the environmentally-friendly plastic composite construction.
9. a kind of method for the environmentally-friendly plastic composite construction for preparing any one of the claim 1-7 high-barrier composts, it is special
Sign is, comprises the following steps：
Each film layer component is taken, it is uniform in stirrer for mixing respectively, directly it is molded after ejection formation, produces the environmentally-friendly plastic
Composite construction.
10. a kind of method for the environmentally-friendly plastic composite construction for preparing any one of the claim 1-7 high-barrier composts, it is special
Sign is, comprises the following steps：
Each film layer component is taken, each film is made respectively, film is carried out afterwards and does again, produce the environmentally-friendly plastic composite construction.
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| CN201710960829.XA CN107696622A (en) | 2017-10-13 | 2017-10-13 | A kind of environmentally-friendly plastic composite construction of high-barrier compost and preparation method thereof |
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| CN201710960829.XA CN107696622A (en) | 2017-10-13 | 2017-10-13 | A kind of environmentally-friendly plastic composite construction of high-barrier compost and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112644127A (en) * | 2021-01-13 | 2021-04-13 | 青岛福顺祥生物科技有限公司 | Full-biodegradable high-barrier multilayer composite material, preparation method thereof and packaging bag |
| CN113427867A (en) * | 2021-08-16 | 2021-09-24 | 中国科学院长春应用化学研究所 | Multilayer heat-resistant high-transparency degradable polylactic acid-based film |
| CN113524831A (en) * | 2021-08-05 | 2021-10-22 | 中国科学院长春应用化学研究所 | Polylactic acid-based environment-friendly agricultural mulching film and preparation method thereof |
| CN113561604A (en) * | 2021-08-16 | 2021-10-29 | 中国科学院长春应用化学研究所 | Polylactic acid-based multifunctional multilayer composite agricultural mulching film and preparation method thereof |
| WO2022080238A1 (en) * | 2020-10-16 | 2022-04-21 | デンカ株式会社 | Multilayer resin sheet and molding container |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022080238A1 (en) * | 2020-10-16 | 2022-04-21 | デンカ株式会社 | Multilayer resin sheet and molding container |
| CN112644127A (en) * | 2021-01-13 | 2021-04-13 | 青岛福顺祥生物科技有限公司 | Full-biodegradable high-barrier multilayer composite material, preparation method thereof and packaging bag |
| CN113524831A (en) * | 2021-08-05 | 2021-10-22 | 中国科学院长春应用化学研究所 | Polylactic acid-based environment-friendly agricultural mulching film and preparation method thereof |
| CN113427867A (en) * | 2021-08-16 | 2021-09-24 | 中国科学院长春应用化学研究所 | Multilayer heat-resistant high-transparency degradable polylactic acid-based film |
| CN113561604A (en) * | 2021-08-16 | 2021-10-29 | 中国科学院长春应用化学研究所 | Polylactic acid-based multifunctional multilayer composite agricultural mulching film and preparation method thereof |
| CN113427867B (en) * | 2021-08-16 | 2023-03-07 | 中国科学院长春应用化学研究所 | Multilayer heat-resistant high-transparency degradable polylactic acid-based film |
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