CN109796711A - A kind of heat shrink films and preparation method thereof of high degradability energy and high barrier function - Google Patents
A kind of heat shrink films and preparation method thereof of high degradability energy and high barrier function Download PDFInfo
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- CN109796711A CN109796711A CN201811569676.7A CN201811569676A CN109796711A CN 109796711 A CN109796711 A CN 109796711A CN 201811569676 A CN201811569676 A CN 201811569676A CN 109796711 A CN109796711 A CN 109796711A
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Abstract
The invention belongs to heat shrink films fields, in particular disclose the heat shrink films and preparation method thereof of a kind of high degradability energy and high barrier function, it now proposes following scheme, is made of the raw material of following parts by weight: 100~120 parts of polyvinyl alcohol, 20~30 parts of metallocene linear-low density polyethylene, 3~10 parts of nano zine oxide, 15~30 parts of glycerine, 3~5 parts of talcum powder, 2~5 parts of dispersing agent, 2~5 parts of UV UV resistant agent, 10~20 parts of biodegradation agent, 100~120 parts of starch, 3~5 parts of antistatic agent, 10~200 parts of distilled water.The method of the present invention is reasonable, and obtained heat shrink films are high-quality, has high degradability and high barrier, of good quality, is suitble to promote the use of.
Description
Technical field
The present invention relates to heat-shrinkable film technology fields more particularly to a kind of high degradability to receive with the heat of high barrier function
Contracting film and preparation method thereof.
Background technique
Heat shrink films are used for the sale and transport of various products, and main function is to consolidate, cover and protect product.It shrinks
Film must paracentesis resistance with higher, good shrinkage and certain shrinkage stress.In contraction process, film cannot be produced
Raw hole.
Heat shrink films are widely used in: food, drug, sterilizing dinnerware, stationery sports goods, process gift, printed matter, hardware modeling
The outer packing of material products, telephone set, electronic apparatus etc. various products, the especially combination in anomalistic object article or commodity
Formula (boundling) packaging aspect, be not only able to satisfy commodity it is moisture-proof it is dust-proof, touch-proof substitute for another surreptitiously, the functions such as transparent display, but also can increase production
Product eye appeal, it can also be used to instead of all kinds of cartons, not only save packing cost, and meet packaging trend.Shrink film
(bag) is processable to be made: the abnormity sack such as flat mouth bag, arc-shaped bag, trapezoidal bag, stereoscopic bag.
Heat shrink films are as a kind of plastic products more popular in recent years, with intensity is high, stiffness is good, transparency
Height, heat shrinkable such as can fit closely at the functions with inner matter, be widely used in the row such as fresh food and medical outer packing
Industry.However common heat shrink films, barrier property is poor, and it can only guarantee the timeliness of food medicine in the short time, be widely used simultaneously,
It is not degradable, easily cause " white pollution ".By advanced production technology, designs one kind and be provided simultaneously with degradation and high barrier function
The optimization heat shrink films industry of high degree is kept the timeliness of fresh medicine big by the heat shrink films of energy, the smooth production of product
Increase greatly, while reducing " white pollution " to influence caused by environment.
For this purpose, the present invention proposes the heat shrink films and preparation method thereof of a kind of high degradability energy and high barrier function.
Summary of the invention
The purpose of the present invention is to solve disadvantage existing in the prior art, and a kind of high degradability energy and height proposed
Obstruct the heat shrink films and preparation method thereof of sexual function.
To achieve the goals above, present invention employs following technical solutions:
A kind of heat shrink films of high degradability energy and high barrier function, be made of: polyethylene the raw material of following parts by weight
100~120 parts of alcohol, 20~30 parts of metallocene linear-low density polyethylene, 3~10 parts of nano zine oxide, 15~30 parts of glycerine,
3~5 parts of talcum powder, 2~5 parts of dispersing agent, 2~5 parts of UV UV resistant agent, 10~20 parts of biodegradation agent, starch 100~120
Part, 3~5 parts of antistatic agent, 10~200 parts of distilled water.
Preferably, it is made of the raw material of following parts by weight: 105~115 parts of polyvinyl alcohol, the poly- second of metallocene linear low density
23~27 parts of alkene, 5~7 parts of nano zine oxide, 20~25 parts of glycerine, 3.5~4.5 parts of talcum powder, 2.5~4.5 parts of dispersing agent,
2.5~4.5 parts of UV UV resistant agent, 13~17 parts of biodegradation agent, 105~115 parts of starch, 3.5~4.5 parts of antistatic agent,
10~200 parts of distilled water.
Preferably, it is made of the raw material of following parts by weight: 110 parts of polyvinyl alcohol, metallocene linear-low density polyethylene 25
Part, 6.5 parts of nano zine oxide, 22.5 parts of glycerine, 4 parts of talcum powder, 3.5 parts of dispersing agent, 3.5 parts of UV UV resistant agent, biology
15 parts of degradation agent, 110 parts of starch, 4 parts of antistatic agent, 160 parts of distilled water.
Preferably, the biodegradation agent includes monosaccharide, polysaccharide, metal salt and polylactic acid, and monosaccharide, polysaccharide, metal salt
Weight ratio with polylactic acid is 1~2:1~2:1~2:1~3；Its relative density is 0.90~0.97g/cm3；The wherein gold
Belonging to salt is organic metal salt or inorganic metal salt.
Preferably, the dispersing agent is dispersed oil.
Preferably, the weight ratio of the polyvinyl alcohol, metallocene linear-low density polyethylene and glycerine is 1:0.2-
0.3:1.
A kind of preparation method of high degradability energy and the heat shrink films of high barrier function, include the following steps,
S1 weighs raw material by weight；Above-mentioned raw materials are put into mixing machine and are sufficiently mixed, are mixed after mixing
Object A；
Mixture A is put into plastics processing mill by S2, and the hot material B that 10-30min is plasticized is heated at a temperature of 80-100 DEG C；
The hot material B of plasticizing is delivered in extruder by S3 by screw rod conveyor, and extruder is along feed inlet to mouth mold direction
It is heated, each section of heating temperature is followed successively by 95 DEG C, 100 DEG C, 105 DEG C, 110 DEG C, 115 DEG C, 120 DEG C, 130 DEG C, extruder
Engine speed 300r/min, the feed rotation 9r/min of screw rod conveyor are attached to rapidly cooling after melt film is from head extrusion
Roller surface rapidly cools to form solid basement membrane, then successively forms film by longitudinal stretching and cross directional stretch, and it is fixed finally to be overheated
Type obtains finished product.
Preferably, in the S2, mixture A is put into plastics processing mill, heats what 20min was plasticized at a temperature of 90 DEG C
Hot material B.
The heat shrink films of a kind of high degradability energy and high barrier function proposed by the present invention, by the raw material of following parts by weight
Composition: 100~120 parts of polyvinyl alcohol, 20~30 parts of metallocene linear-low density polyethylene, 3~10 parts of nano zine oxide, the third three
15~30 parts of alcohol, 2~5 parts of dispersing agent, 2~5 parts of UV UV resistant agent, 10~20 parts of biodegradation agent, forms sediment at 3~5 parts of talcum powder
100~120 parts of powder, 3~5 parts of antistatic agent, 10~200 parts of distilled water, polyvinyl alcohol, starch and glycerine composition easily decompose
Layer, in this way can fast decoupled in the soil, and joined metallocene linear-low density polyethylene, heat shrink films can be improved
Barrier property, improve be heat-shrinked film strength, avoid heat shrink films from through-hole, the design of UV UV resistant agent, when to doctor occur
When drug package, ultraviolet irradiation is unavoidably received, effectively avoids the influence of ultraviolet light, and the invention also provides one
The hot material B of plasticizing it is defeated to be passed through screw rod conveyor with the preparation method of the heat shrink films of high barrier function by kind high degradability
Send into extruder, extruder is heated along feed inlet to mouth mold direction, each section of heating temperature be followed successively by 95 DEG C, 100 DEG C,
105 DEG C, 110 DEG C, 115 DEG C, 120 DEG C, 130 DEG C, the engine speed 300r/min of extruder, the feed rotation of screw rod conveyor
9r/min, method is reasonable, and obtained heat shrink films are high-quality, has high degradability and high barrier, of good quality, suitable popularization makes
With.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.
Embodiment one
The heat shrink films of a kind of high degradability energy and high barrier function proposed by the present invention, by the raw material of following parts by weight
Composition: 120 parts of polyvinyl alcohol, 30 parts of metallocene linear-low density polyethylene, 10 parts of nano zine oxide, 30 parts of glycerine, talcum
5 parts of powder, 5 parts of dispersing agent, 5 parts of UV UV resistant agent, 20 parts of biodegradation agent, 120 parts of starch, 5 parts of antistatic agent, distilled water
200 parts.
The preparation method of a kind of high degradability energy proposed by the present invention and the heat shrink films of high barrier function, including it is following
Step,
S1 weighs raw material by weight；Above-mentioned raw materials are put into mixing machine and are sufficiently mixed, are mixed after mixing
Object A；
Mixture A is put into plastics processing mill by S2, and the hot material B that 30min is plasticized is heated at a temperature of 100 DEG C；
The hot material B of plasticizing is delivered in extruder by S3 by screw rod conveyor, and extruder is along feed inlet to mouth mold direction
It is heated, each section of heating temperature is followed successively by 95 DEG C, 100 DEG C, 105 DEG C, 110 DEG C, 115 DEG C, 120 DEG C, 130 DEG C, extruder
Engine speed 300r/min, the feed rotation 9r/min of screw rod conveyor are attached to rapidly cooling after melt film is from head extrusion
Roller surface rapidly cools to form solid basement membrane, then successively forms film by longitudinal stretching and cross directional stretch, and it is fixed finally to be overheated
Type obtains finished product.
Embodiment two
The heat shrink films of a kind of high degradability energy and high barrier function proposed by the present invention, by the raw material of following parts by weight
Composition: 110 parts of polyvinyl alcohol, 6.5 parts of nano zine oxide, 22.5 parts of glycerine, is slided 25 parts of metallocene linear-low density polyethylene
4 parts of mountain flour, 3.5 parts of UV UV resistant agent, 15 parts of biodegradation agent, 110 parts of starch, 4 parts of antistatic agent, steams 3.5 parts of dispersing agent
160 parts of distilled water.
The preparation method of a kind of high degradability energy proposed by the present invention and the heat shrink films of high barrier function, including it is following
Step,
S1 weighs raw material by weight；Above-mentioned raw materials are put into mixing machine and are sufficiently mixed, are mixed after mixing
Object A；
Mixture A is put into plastics processing mill by S2, and the hot material B that 20min is plasticized is heated at a temperature of 90 DEG C；
The hot material B of plasticizing is delivered in extruder by S3 by screw rod conveyor, and extruder is along feed inlet to mouth mold direction
It is heated, each section of heating temperature is followed successively by 95 DEG C, 100 DEG C, 105 DEG C, 110 DEG C, 115 DEG C, 120 DEG C, 130 DEG C, extruder
Engine speed 300r/min, the feed rotation 9r/min of screw rod conveyor are attached to rapidly cooling after melt film is from head extrusion
Roller surface rapidly cools to form solid basement membrane, then successively forms film by longitudinal stretching and cross directional stretch, and it is fixed finally to be overheated
Type obtains finished product.
Embodiment three
The heat shrink films of a kind of high degradability energy and high barrier function proposed by the present invention, by the raw material of following parts by weight
Composition: 100 parts of polyvinyl alcohol, 20 parts of metallocene linear-low density polyethylene, 3 parts of nano zine oxide, 15 parts of glycerine, talcum powder
3 parts, 2 parts of dispersing agent, 2 parts of UV UV resistant agent, 10 parts of biodegradation agent, 100 parts of starch, 3 parts of antistatic agent, distilled water 10
Part.
The preparation method of a kind of high degradability energy proposed by the present invention and the heat shrink films of high barrier function, including it is following
Step,
S1 weighs raw material by weight；Above-mentioned raw materials are put into mixing machine and are sufficiently mixed, are mixed after mixing
Object A；
Mixture A is put into plastics processing mill by S2, and the hot material B that 10min is plasticized is heated at a temperature of 80 DEG C；
The hot material B of plasticizing is delivered in extruder by S3 by screw rod conveyor, and extruder is along feed inlet to mouth mold direction
It is heated, each section of heating temperature is followed successively by 95 DEG C, 100 DEG C, 105 DEG C, 110 DEG C, 115 DEG C, 120 DEG C, 130 DEG C, extruder
Engine speed 300r/min, the feed rotation 9r/min of screw rod conveyor are attached to rapidly cooling after melt film is from head extrusion
Roller surface rapidly cools to form solid basement membrane, then successively forms film by longitudinal stretching and cross directional stretch, and it is fixed finally to be overheated
Type obtains finished product.
The heat shrink films of a kind of high degradability energy and high barrier function proposed by the present invention, by the raw material of following parts by weight
Composition: 100~120 parts of polyvinyl alcohol, 20~30 parts of metallocene linear-low density polyethylene, 3~10 parts of nano zine oxide, the third three
15~30 parts of alcohol, 2~5 parts of dispersing agent, 2~5 parts of UV UV resistant agent, 10~20 parts of biodegradation agent, forms sediment at 3~5 parts of talcum powder
100~120 parts of powder, 3~5 parts of antistatic agent, 10~200 parts of distilled water, polyvinyl alcohol, starch and glycerine composition easily decompose
Layer, in this way can fast decoupled in the soil, and joined metallocene linear-low density polyethylene, heat shrink films can be improved
Barrier property, improve be heat-shrinked film strength, avoid heat shrink films from through-hole, the design of UV UV resistant agent, when to doctor occur
When drug package, ultraviolet irradiation is unavoidably received, effectively avoids the influence of ultraviolet light, and the invention also provides one
The hot material B of plasticizing it is defeated to be passed through screw rod conveyor with the preparation method of the heat shrink films of high barrier function by kind high degradability
Send into extruder, extruder is heated along feed inlet to mouth mold direction, each section of heating temperature be followed successively by 95 DEG C, 100 DEG C,
105 DEG C, 110 DEG C, 115 DEG C, 120 DEG C, 130 DEG C, the engine speed 300r/min of extruder, the feed rotation of screw rod conveyor
9r/min, method is reasonable, and obtained heat shrink films are high-quality, has high degradability and high barrier, of good quality, suitable popularization makes
With.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of high degradability can be with the heat shrink films of high barrier function, which is characterized in that by the raw material group of following parts by weight
At: 100~120 parts of polyvinyl alcohol, 20~30 parts of metallocene linear-low density polyethylene, 3~10 parts of nano zine oxide, glycerine
15~30 parts, 3~5 parts of talcum powder, 2~5 parts of dispersing agent, 2~5 parts of UV UV resistant agent, 10~20 parts of biodegradation agent, starch
100~120 parts, 3~5 parts of antistatic agent, 10~200 parts of distilled water.
2. a kind of high degradability according to claim 1 can be with the heat shrink films of high barrier function, which is characterized in that by
The raw material of following parts by weight forms: 105~115 parts of polyvinyl alcohol, 23~27 parts of metallocene linear-low density polyethylene, nano oxygen
5~7 parts of zinc of change, 20~25 parts of glycerine, 3.5~4.5 parts of talcum powder, 2.5~4.5 parts of dispersing agent, UV UV resistant agent 2.5~
4.5 parts, 13~17 parts of biodegradation agent, 105~115 parts of starch, 3.5~4.5 parts of antistatic agent, 10~200 parts of distilled water.
3. a kind of high degradability according to claim 1 can be with the heat shrink films of high barrier function, which is characterized in that by
The raw material of following parts by weight forms: 110 parts of polyvinyl alcohol, 25 parts of metallocene linear-low density polyethylene, nano zine oxide 6.5
Part, 22.5 parts of glycerine, 4 parts of talcum powder, 3.5 parts of dispersing agent, 3.5 parts of UV UV resistant agent, 15 parts of biodegradation agent, starch
110 parts, 4 parts of antistatic agent, 160 parts of distilled water.
4. a kind of high degradability according to claim 1 can be with the heat shrink films of high barrier function, which is characterized in that institute
Stating biodegradation agent includes monosaccharide, polysaccharide, metal salt and polylactic acid, and monosaccharide, polysaccharide, metal salt and polylactic acid weight ratio be
1~2:1~2:1~2:1~3；Its relative density is 0.90~0.97g/cm3；Wherein the metal salt be organic metal salt or
Inorganic metal salt.
5. a kind of high degradability according to claim 1 can be with the heat shrink films of high barrier function, which is characterized in that institute
Stating dispersing agent is dispersed oil.
6. a kind of high degradability according to claim 1 can be with the heat shrink films of high barrier function, which is characterized in that institute
The weight ratio for stating polyvinyl alcohol, metallocene linear-low density polyethylene and glycerine is 1:0.2-0.3:1.
7. a kind of high degradability can be with the preparation method of the heat shrink films of high barrier function, which is characterized in that including following step
Suddenly,
S1 weighs raw material by weight；Above-mentioned raw materials are put into mixing machine and are sufficiently mixed, mixture A is obtained after mixing；
Mixture A is put into plastics processing mill by S2, and the hot material B that 10-30min is plasticized is heated at a temperature of 80-100 DEG C；
The hot material B of plasticizing is delivered in extruder by S3 by screw rod conveyor, and extruder is carried out along feed inlet to mouth mold direction
Heating, each section of heating temperature are followed successively by 95 DEG C, 100 DEG C, 105 DEG C, 110 DEG C, 115 DEG C, 120 DEG C, 130 DEG C, the host of extruder
Revolving speed 300r/min, the feed rotation 9r/min of screw rod conveyor are attached to rapidly chill roll table after melt film is from head extrusion
Face rapidly cools to form solid basement membrane, then successively forms film by longitudinal stretching and cross directional stretch, finally obtains by thermal finalization
To finished product.
8. the preparation method of a kind of high degradability energy according to claim 7 and the heat shrink films of high barrier function,
It is characterized in that, in the S2, mixture A is put into plastics processing mill, the hot material B that 20min is plasticized is heated at a temperature of 90 DEG C.
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Cited By (1)
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| CN113997668A (en) * | 2021-11-10 | 2022-02-01 | 安徽致达包装有限公司 | Degradable polyethylene heat shrinkable film and preparation method thereof |
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Application publication date: 20190524 |