CN110511437A - A kind of Biodegradable environment protection type packaging material for food - Google Patents
A kind of Biodegradable environment protection type packaging material for food Download PDFInfo
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- CN110511437A CN110511437A CN201910678153.4A CN201910678153A CN110511437A CN 110511437 A CN110511437 A CN 110511437A CN 201910678153 A CN201910678153 A CN 201910678153A CN 110511437 A CN110511437 A CN 110511437A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
- B65D65/466—Bio- or photodegradable packaging materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/02—Cellulose; Modified cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- 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
- C08K5/54—Silicon-containing compounds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Mechanical Engineering (AREA)
- Wrappers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of Biodegradable environment protection type packaging materials for food, its raw material includes: 30-50 parts of cellulose, 25-35 parts of straw, 15-35 parts of corn, 10-15 parts of collagen, 5-15 parts of chitosan, 40-65 parts of water, 15-35 parts of plasticizer, 20-40 parts of adhesive, 5-10 parts of silane coupling agent, 4-8 parts of crosslinking agent, 12-15 parts of chemical assistant, 12-15 parts of plasticizer starch and 3-10 parts of polyvinyl alcohol by weight, the cellulose is polyhydroxy glucose polymer, plasticizer is synthesis polyacrylic acid, and the present invention relates to field of packaging material.The Biodegradable environment protection type packaging material for food; packaging material is made by using plant fiber and animal protein; the degradability for improving packaging material alleviates the pressure of environment, improves the service efficiency of packaging material; there is antibiotic property simultaneously; the protectiveness to packaging object is improved, the injury to body, the use of animal protein are alleviated; the preservation effect to food is improved, the flavor for saving food is conducive to.
Description
Technical field
The present invention relates to field of packaging material, specially a kind of Biodegradable environment protection type packaging material for food.
Background technique
Packaging material, which refers to, meets product packaging for manufacturing packing container, packing and decorating, packages printing, packed and transported etc.
Material used in it is required that, it includes metal, plastics, glass, ceramics, paper, bamboo sheet, wild mushroom class, natural fiber, chemistry fibre
The main packaging material such as dimension, composite material, and including auxiliary materials such as strapping, decoration, printing materials, packaging material is entire
It is occupied an important position in packaging industry, is to develop packing technique, improve packaging quality and reduce the basis of packing cost, therefore,
Performance, application range and the development trend for understanding packaging material expand packaging material source, adopt to reasonable package selection material
With new packing and New Machining Technology, novel package and packing technique are created, packing technique level and management level is improved, all has
Important meaning, degradable garbage, which refers to, to specifically include that paper, timber, plant, food etc. with the organic waste of natural decomposition
Under the action of microorganism, the compound of the common form of the natures such as carbon dioxide and water is ultimately formed.
The use of existing packaging bag is more universal, but most defeated packaging bag cannot carry out after becoming rubbish
It decomposes, biggish pressure is caused to environment, become waste after and accumulate, become the main pollution of city production and living environment
One of source, and there is no bacteriostasis to the food of packaging, the body of consumer is done harm rather than good, and storge quality is lower.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of Biodegradable environment protection type packaging materials for food, solve
Most defeated packaging bag cannot be decomposed after becoming rubbish, to environment cause biggish pressure, become useless after
Gurry accumulation, becomes one of the primary pollution source of city production and living environment, and do not have bacteriostasis to the food of packaging, right
The body of consumer is done harm rather than good, and the problem that storge quality is lower.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of Biodegradable environment protection type food
Product packaging material, raw material include: 30-50 parts of cellulose, 25-35 parts of straw, 15-35 parts of corn, collagen egg by weight
10-15 parts white, 5-15 parts of chitosan, 40-65 parts of water, 15-35 parts of plasticizer, 20-40 parts of adhesive, silane coupling agent 5-10
Part, 4-8 parts of crosslinking agent, 12-15 parts of chemical assistant, 12-15 parts of plasticizer starch and 3-10 parts of polyvinyl alcohol.
Preferably, raw material includes following component: 40 parts of cellulose, 30 parts of straw, 25 parts of corn, 13 parts of collagen,
10 parts of chitosan, 55 parts of water, 25 parts of plasticizer, 30 parts of adhesive, 7 parts of silane coupling agent, 6 parts of crosslinking agent, 13 parts of chemical assistant,
13 parts and 6 parts of polyvinyl alcohol of plasticizer starch.
Preferably, raw material includes following component: 30 parts of cellulose, 25 parts of straw, 15 parts of corn, 10 parts of collagen,
5 parts of chitosan, 40 parts of water, 15 parts of plasticizer, 20 parts of adhesive, 5 parts of silane coupling agent, 4 parts of crosslinking agent, 12 parts of chemical assistant,
12 parts and 3 parts of polyvinyl alcohol of plasticizer starch.
Preferably, raw material includes following component: 50 parts of cellulose, 35 parts of straw, 35 parts of corn, 15 parts of collagen,
15 parts of chitosan, 65 parts of water, 35 parts of plasticizer, 40 parts of adhesive, 10 parts of silane coupling agent, 8 parts of crosslinking agent, chemical assistant 15
Part, 15 parts of plasticizer starch and 10 parts of polyvinyl alcohol.
Preferably, the cellulose is polyhydroxy glucose polymer, and the plasticizer is synthesis polyacrylic acid, the friendship
Joining agent is calcium hydroxide.
Cellulose be by glucose group at macromolecular polysaccharide, not soluble in water and common organic solvents are plant cell walls
Main component, cellulose is that a kind of polysaccharide most wide, that content is most are distributed in nature, account for the 50% of plant kingdom's carbon content with
On, the content of cellulose of cotton is close to 100%, and for natural most pure cellulose source, in general timber, cellulose accounts for 40-
50%, there are also the lignin of the hemicellulose of 10-30% and 20-30%.
Polyvinyl alcohol, organic compound, white plates, cotton-shaped or pulverulent solids are tasteless, are dissolved in water, insoluble in gasoline,
Kerosene, vegetable oil, benzene, toluene, dichloroethanes, carbon tetrachloride, acetone, ethyl acetate, methanol, ethylene glycol etc., are slightly soluble in diformazan
Base sulfoxide, polyvinyl alcohol are important industrial chemicals, fine for manufacturing Pioloform, polyvinyl acetal, resistance to gasoline pipeline and vinylon synthesis
Dimension, fabric-treating agent, emulsifier, paper coating, adhesive, glue etc..
Chitosan is that the chitin being widely present by nature is obtained by deacetylation, and chemical name is poly- grape
Osamine (1-4) -2- amino-B-D glucose.
Preferably, the preparation method of the Biodegradable environment protection type packaging material for food, specifically includes the following steps:
The preparation of S1, pre-composition: choosing the straw of appropriate score, and a certain amount of water is added, and straw and water are poured into and blended
It is blended in machine and reaches straw pulp, blending the time is 1-2 hours, is then filtered straw pulp, obtains fine and smooth straw pulp, then will system
The straw pulp obtained, which pours into mixing machine, sequentially adds a certain amount of cellulose, collagen, chitosan and silane coupling agent, and starting is mixed
Conjunction machine is mixed, and incorporation time is 30-50 minutes, and the rotation speed of mixing machine is 200 revs/min, is then put into a certain amount of
Plasticizer, adhesive and crosslinking agent, continue to mix, obtain pre-composition；
The preparation of S2, body layer: obtained mixture is put into double screw extruder and carries out extrusion granulation, squeezes temperature point
For 3 areas, first area's temperature is 148 DEG C, and second area's temperature is 158 DEG C, and third area temperature is 178 DEG C, after twin-screw extruder,
Raw material after extrusion is subjected to blowfilm shaping with single-screw extrusion machine, charge temperature is 65-75 DEG C when blown film, compresses plasticization temperature
It is 90-115 DEG C, blow-up ratio 1:3, hauling speed 3.8m/min；Packaging material for food main body is prepared in cooling after molding
Layer；
The preparation of S3, outer membrane material: choosing suitable corn, by corn mill at powdered, then puts into corn flour
Into extruder, a certain amount of water is added, corn flour is plasticized, a certain amount of plasticizer starch is added and is mixed, then
A certain amount of polyvinyl alcohol is added, material is uniformly mixed, obtains outer membrane material；
Outer membrane material obtained in S3: being uniformly coated in the surface of body layer obtained in S2 by the preparation of S4, finished product,
Then finished product is subjected to natural air drying, Biodegradable environment protection type packaging material for food can be obtained.
(3) beneficial effect
The present invention provides a kind of Biodegradable environment protection type packaging materials for food.Having compared with prior art following has
Beneficial effect: the Biodegradable environment protection type packaging material for food, raw material include: 30-50 parts of cellulose, straw by weight
25-35 parts, 15-35 parts of corn, 10-15 parts of collagen, 5-15 parts of chitosan, 40-65 parts of water, 15-35 parts of plasticizer, bonding
20-40 parts of agent, 5-10 parts of silane coupling agent, 4-8 parts of crosslinking agent, 12-15 parts of chemical assistant, 12-15 parts of plasticizer starch and poly-
3-10 parts of vinyl alcohol, preparation method specifically includes the following steps: S1, pre-composition preparation, the preparation of S2, body layer is S3, outer
The preparation of the preparation of membrane material and S4, finished product makes packaging material by using plant fiber and animal protein, improves packaging
The degradability of material alleviates the pressure of environment, improves the service efficiency of packaging material, while having antibiotic property, improves
To the protectiveness of packaging object, the injury to body is alleviated, the use of animal protein improves the preservation effect to food
Fruit is conducive to the flavor for saving food.
Detailed description of the invention
Fig. 1 is step flow chart of the invention；
Fig. 2 is comparative experimental data statistical form figure of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of three kinds of technical solutions: Biodegradable environment protection type food packaging referring to FIG. 1-2,
Material specifically includes following embodiment:
Embodiment 1
The preparation of S1, pre-composition: choosing 30 parts of straw, and 35 parts of water is added, 30 parts of straw and 35 parts of water are poured into and stirred
It is blended in broken machine and reaches straw pulp, blending the time is 1.5 hours, is then filtered straw pulp, obtains fine and smooth straw pulp, then will
Straw pulp obtained, which pours into mixing machine, sequentially adds 40 parts of cellulose, 13 parts of collagens, 10 parts of chitosans and 7 parts of silane idols
Join agent, starting mixing machine is mixed, and incorporation time is 40 minutes, and the rotation speed of mixing machine is 200 revs/min, is then thrown
The plasticizer, 30 parts of adhesives and 6 parts of crosslinking agents for entering 25 parts, continue to mix, obtain pre-composition；
The preparation of S2, body layer: obtained mixture is put into double screw extruder and carries out extrusion granulation, squeezes temperature point
For 3 areas, first area's temperature is 148 DEG C, and second area's temperature is 158 DEG C, and third area temperature is 178 DEG C, after twin-screw extruder,
Raw material after extrusion is subjected to blowfilm shaping with single-screw extrusion machine, charge temperature is 70 DEG C when blown film, and compression plasticization temperature is
105 DEG C, blow-up ratio 1:3, hauling speed 3.8m/min；Packaging material for food body layer is prepared in cooling after molding；
The preparation of S3, outer membrane material: choosing 25 parts of corn, by 25 parts of corn mills at powdered, then by corn flour
It puts into extruder, 20 parts of water is added, corn flour is plasticized, 13 parts of plasticizer starch is added and is mixed, then
6 parts of polyvinyl alcohol is added, material is uniformly mixed, outer membrane material is obtained；
Outer membrane material obtained in S3: being uniformly coated in the surface of body layer obtained in S2 by the preparation of S4, finished product,
Then finished product is subjected to natural air drying, Biodegradable environment protection type packaging material for food can be obtained.
Embodiment 2
The preparation of S1, pre-composition: choosing 25 parts of straw, and 20 parts of water is added, 25 parts of straw and 20 parts of water are poured into and stirred
It is blended in broken machine and reaches straw pulp, blending the time is 1 hour, is then filtered straw pulp, obtains fine and smooth straw pulp, then will system
Straw pulp pour into mixing machine sequentially add 30 parts cellulose, 10 parts of collagens, 5 parts of chitosans and 5 parts it is silane coupled
Agent, starting mixing machine are mixed, and incorporation time is 30 minutes, and the rotation speed of mixing machine is 200 revs/min, are then put into
15 parts of plasticizer, 20 parts of adhesives and 4 parts of crosslinking agents, continue to mix, obtain pre-composition；
The preparation of S2, body layer: obtained mixture is put into double screw extruder and carries out extrusion granulation, squeezes temperature point
For 3 areas, first area's temperature is 148 DEG C, and second area's temperature is 158 DEG C, and third area temperature is 178 DEG C, after twin-screw extruder,
Raw material after extrusion is subjected to blowfilm shaping with single-screw extrusion machine, charge temperature is 65 DEG C when blown film, and compression plasticization temperature is
90 DEG C, blow-up ratio 1:3, hauling speed 3.8m/min；Packaging material for food body layer is prepared in cooling after molding；
The preparation of S3, outer membrane material: choosing 15 parts of corn, by 15 parts of corn mills at powdered, then by corn flour
It puts into extruder, 20 parts of water is added, corn flour is plasticized, 12 parts of plasticizer starch is added and is mixed, then
3 parts of polyvinyl alcohol is added, material is uniformly mixed, outer membrane material is obtained；
Outer membrane material obtained in S3: being uniformly coated in the surface of body layer obtained in S2 by the preparation of S4, finished product,
Then finished product is subjected to natural air drying, Biodegradable environment protection type packaging material for food can be obtained.
Embodiment 3
The preparation of S1, pre-composition: choosing 35 parts of straw, and 30 parts of water is added, 35 parts of straw and 30 parts of water are poured into and stirred
It is blended in broken machine and reaches straw pulp, blending the time is 2 hours, is then filtered straw pulp, obtains fine and smooth straw pulp, then will system
Straw pulp pour into mixing machine and sequentially add 50 parts of cellulose, 15 parts of collagens, 15 parts of chitosans and 10 parts of silane idols
Join agent, starting mixing machine is mixed, and incorporation time is 50 minutes, and the rotation speed of mixing machine is 200 revs/min, is then thrown
The plasticizer, 40 parts of adhesives and 8 parts of crosslinking agents for entering 35 parts, continue to mix, obtain pre-composition；
The preparation of S2, body layer: obtained mixture is put into double screw extruder and carries out extrusion granulation, squeezes temperature point
For 3 areas, first area's temperature is 148 DEG C, and second area's temperature is 158 DEG C, and third area temperature is 178 DEG C, after twin-screw extruder,
Raw material after extrusion is subjected to blowfilm shaping with single-screw extrusion machine, charge temperature is 75 DEG C when blown film, and compression plasticization temperature is
115 DEG C, blow-up ratio 1:3, hauling speed 3.8m/min；Packaging material for food body layer is prepared in cooling after molding；
The preparation of S3, outer membrane material: choosing 35 parts of corn, by 35 parts of corn mills at powdered, then by corn flour
It puts into extruder, 30 parts of water is added, corn flour is plasticized, 15 parts of plasticizer starch is added and is mixed, then
10 parts of polyvinyl alcohol is added, material is uniformly mixed, outer membrane material is obtained；
Outer membrane material obtained in S3: being uniformly coated in the surface of body layer obtained in S2 by the preparation of S4, finished product,
Then finished product is subjected to natural air drying, Biodegradable environment protection type packaging material for food can be obtained.
Comparative experiments
Certain packaging bag manufacturer randomly selects 30 staff's progress packaging materials and tests, wherein choosing 10
Staff tests packaging material made by the production method of the embodiment of the present invention 1, then randomly selects 10 staff and survey
Packaging material made by the production method of the embodiment of the present invention 2 is tried, remaining 10 staff test the embodiment of the present invention 2
Production method made by packaging material, after 30 staff test, the effect after testing it is remembered
Record, while recording positive rating.
As shown in Figure 2, the positive rating of the embodiment of the present invention 1 be 99%, test effect be it is best in four comparison projects,
And positive rating highest, therefore the production method effect achieved of embodiment 1 is best, burning does not have thorn without black dense smoke
The smell of nose is in ashes after burning, and food retains original state, and fresh-keeping degree is preferable, is made of plant fiber and animal protein
Packaging material improves the degradability of packaging material, alleviates the pressure of environment, improves the service efficiency of packaging material,
There is antibiotic property simultaneously, improve the protectiveness to packaging object, alleviate the injury to body, the use of animal protein mentions
The high preservation effect to food, is conducive to the flavor for saving food.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of Biodegradable environment protection type packaging material for food, it is characterised in that: its raw material includes: cellulose by weight
30-50 parts, 25-35 parts of straw, 15-35 parts of corn, 10-15 parts of collagen, 5-15 parts of chitosan, 40-65 parts of water, plasticizer
15-35 parts, 20-40 parts of adhesive, 5-10 parts of silane coupling agent, 4-8 parts of crosslinking agent, 12-15 parts of chemical assistant, plasticizer starch
12-15 parts and polyvinyl alcohol 3-10 parts.
2. a kind of Biodegradable environment protection type packaging material for food according to claim 1, it is characterised in that: its raw material packet
Include following component: 40 parts of cellulose, 30 parts of straw, 25 parts of corn, 13 parts of collagen, 10 parts of chitosan, 55 parts of water, plasticizer
25 parts, 30 parts of adhesive, 7 parts of silane coupling agent, 6 parts of crosslinking agent, 13 parts of chemical assistant, 13 parts of plasticizer starch and polyvinyl alcohol
6 parts.
3. a kind of Biodegradable environment protection type packaging material for food according to claim 1, it is characterised in that: its raw material packet
Include following component: 30 parts of cellulose, 25 parts of straw, 15 parts of corn, 10 parts of collagen, 5 parts of chitosan, 40 parts of water, plasticizer
15 parts, 20 parts of adhesive, 5 parts of silane coupling agent, 4 parts of crosslinking agent, 12 parts of chemical assistant, 12 parts of plasticizer starch and polyvinyl alcohol
3 parts.
4. a kind of Biodegradable environment protection type packaging material for food according to claim 1, it is characterised in that: its raw material packet
Include following component: 50 parts of cellulose, 35 parts of straw, 35 parts of corn, 15 parts of collagen, 15 parts of chitosan, 65 parts of water, plasticizer
35 parts, 40 parts of adhesive, 10 parts of silane coupling agent, 8 parts of crosslinking agent, 15 parts of chemical assistant, 15 parts of plasticizer starch and polyethylene
10 parts of alcohol.
5. a kind of Biodegradable environment protection type packaging material for food according to any one of claims 1-4, feature exist
In: the cellulose is polyhydroxy glucose polymer, and the plasticizer is synthesis polyacrylic acid, and the crosslinking agent is hydroxide
Calcium.
6. a kind of Biodegradable environment protection type packaging material for food according to any one of claims 1-4, feature exist
In: preparation method specifically includes the following steps:
The preparation of S1, pre-composition: choosing the straw of appropriate score, and a certain amount of water is added, straw and water are poured into pulper
It blends and reaches straw pulp, blending the time is 1-2 hours, is then filtered straw pulp, obtains fine and smooth straw pulp, then will be obtained
Straw pulp, which pours into mixing machine, sequentially adds a certain amount of cellulose, collagen, chitosan and silane coupling agent, starts mixing machine
It is mixed, incorporation time is 30-50 minutes, and the rotation speed of mixing machine is 200 revs/min, then puts into a certain amount of increasing
Agent, adhesive and crosslinking agent are moulded, continues to mix, obtains pre-composition；
The preparation of S2, body layer: being put into double screw extruder for obtained mixture and carry out extrusion granulation, squeezes temperature and is divided into 3
A area, first area's temperature are 148 DEG C, and second area's temperature is 158 DEG C, and third area temperature is 178 DEG C, will after twin-screw extruder
Raw material after extrusion carries out blowfilm shaping with single-screw extrusion machine, and charge temperature is 65-75 DEG C when blown film, and compression plasticization temperature is
90-115 DEG C, blow-up ratio 1:3, hauling speed 3.8m/min；Packaging material for food body layer is prepared in cooling after molding；
The preparation of S3, outer membrane material: choosing suitable corn, by corn mill at powdered, then puts into corn flour crowded
In press, a certain amount of water is added, corn flour is plasticized, a certain amount of plasticizer starch is added and is mixed, adds
A certain amount of polyvinyl alcohol, material is uniformly mixed, and obtains outer membrane material；
The preparation of S4, finished product: outer membrane material obtained in S3 is uniformly coated in the surface of body layer obtained in S2, then
Finished product is subjected to natural air drying, Biodegradable environment protection type packaging material for food can be obtained.
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| CN201910678153.4A CN110511437A (en) | 2019-07-25 | 2019-07-25 | A kind of Biodegradable environment protection type packaging material for food |
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| CN201910678153.4A CN110511437A (en) | 2019-07-25 | 2019-07-25 | A kind of Biodegradable environment protection type packaging material for food |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202100001124A1 (en) * | 2021-01-22 | 2022-07-22 | Citrus Srl | REUSABLE PRODUCT IN BIODEGRADABLE MATERIAL BASED ON WASTE FROM THE AGRI-FOOD CHAIN AND RELATED PRODUCTION PROCESS |
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