CN110195377A - A kind of preparation method of tear-resistant high-intensitive food wrapper - Google Patents
A kind of preparation method of tear-resistant high-intensitive food wrapper Download PDFInfo
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- CN110195377A CN110195377A CN201910606957.3A CN201910606957A CN110195377A CN 110195377 A CN110195377 A CN 110195377A CN 201910606957 A CN201910606957 A CN 201910606957A CN 110195377 A CN110195377 A CN 110195377A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/23—Lignins
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/64—Alkaline compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/65—Acid compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/675—Oxides, hydroxides or carbonates
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
- D21H17/74—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic and inorganic material
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Paper (AREA)
Abstract
The present invention relates to a kind of preparation methods of tear-resistant high-intensitive food wrapper, belong to Food Packaging technology field.The present invention is first by sawdust and silica mixed grinding, it puts into react in sodium hydroxide solution after grinding and reacting slurry is made, it adds cotton fiber high-temperature stirring and alkaline reaction liquid is made, hydrochloric acid will be added in alkaline reaction liquid, citric acid oscillation is added dropwise again, modified mixed liquor is made, aluminium chloride is added then to being modified in mixed liquor, pyroreaction after adjusting pH value, it is filtered after reaction and reaction product is made, then thermal response product is made in reaction product high-temperature process, thermal response product is put into ethylene glycol solution and is stirred, add Chitosan powder mixing, self-made binder is obtained by filtration after stirring, finally self-made binder is mixed with paper pulp, it manufactures paper with pulp, hot pressing, it is drying to obtain tear-resistant high-intensitive food wrapper, enhance the crosslinking degree between each ingredient using fibrous material, in conjunction with silica, it is answered with good Use prospect.
Description
Technical field
The present invention relates to a kind of preparation methods of tear-resistant high-intensitive food wrapper, belong to Food Packaging technology field.
Background technique
With the raising of social standard of living and economic level, the type of packaging material for food is more and more.Wherein, as
The important component part of packaging material for food, food wrapper occupy an important position in entire food packaging industry, but
It is how to develop wrapping paper technology, how improving food packaging paper quality and reducing food wrapper cost is production and processing food
The significant consideration of wrapping paper.
Traditional food wrapper is used as packaging material using plastics, and raw material sources are abundant, low in cost, function admirable,
But the extremely difficult degradation of plastic package material, it is difficult to handle, so consumer eliminates plastics food with the raising of environmental protection requirement
Product packaging material is necessary.Food in the market replaces plastic package material using paper wrapper as far as possible, it is possible to reduce
The waste of plastics and the pollution of environment, the following paper and paper container play a very important role.
Food wrapper is mainly used for the packaging of food, not only needs certain sanitary quality standard, and need compared with
Strong mechanical strength, since present food wrapper is nearly all the food for packing some grease types, as cream, bread, cake,
Ice cream etc., so having certain oil substances of resisting extremely important through the performance of paper, institute for food wrapper
With the food wrapper always belongs to greaseproof, and specific performance indicator can be found in the performance indicator of greaseproof.
Timber is the main source of paper pulp papermaking fiber, and timber is to borrow the derivative energy of photosynthate, it may be assumed that dimension
Manage what cambial cellular regions generated, behind cambial cell area, each cell expands in succession, and cell wall is made to thicken simultaneously lignifying.
Timber almost all is made of the long pyramidal cells of referred to as tracheid, and tracheid is made of several layers.The high intercellular of lignin content
Layer, two adjacent tracheids are separated.Each tracheid has a primary wall and one three layers of secondary wall, by particular arrangement
Microfibril composition, microfibril is bundles of cellulosic molecule, their orientation can influence the characteristic of paper pulp fiber.Wood pulp
Fiber content it is relatively high, lignin content is relatively low, and its fibre length is long, and general fibre length is in 2.0-3.0mm, institute
To need beating degree appropriate by its fibre cutting, then carry out manufacturing paper with pulp for food wrapper.
It is well known that wood pulp cost is relatively high, and excessive use is unfavorable for the development of environmental protection cause, and annual China is cut excessively
Denudation phenomenon occurs again and again, as few as possible using timber or to accomplish not using in today of modern industry high speed development
It is of crucial importance that timber is just capable of processing out the product met the quality standard.China is large agricultural country, and annual a large amount of straw burning is not
Only environment is caused greatly to pollute, and causes the waste of the energy.Traditional stalk, such as wheat, corn, the stalk of cotton
In contain a large amount of fiber, be the excellent materials of papermaking.It is manufactured paper with pulp food wrapper using stalk, food can not only be greatly lowered
The production cost of wrapping paper, and discarded stalk is made to be fully utilized.But since the flexibility of stalk is relatively poor,
So it is thicker merely with the food wrapper quality that the straw pulp of stalk is manufactured paper with pulp out, and mechanical strength is relatively low.But if
Suitable wood pulp is participated in straw pulp, just can greatly improve the performance of paper.
Therefore, inventing a kind of fungistatic effect, well to cut the high food wrapper of mechanical strength necessary.
Summary of the invention
The technical problems to be solved by the invention: for current food wrapper mechanical strength it is bad cause easily to be torn,
The bad defect of antibacterial bacteriostatic effect provides a kind of preparation method of tear-resistant high-intensitive food wrapper.It is above-mentioned to solve
Technical problem, the technical solution adopted by the present invention is that:
A kind of preparation method of tear-resistant high-intensitive food wrapper, it is characterised in that specific preparation step are as follows:
Prefabricated slurries are made by being uniformly mixed in self-made binder and paper pulp investment stirred tank, prefabricated slurries are put into paper
It manufactures paper with pulp and manufactures paper with pulp in machine, reaction l Water Paper is obtained after manufacturing paper with pulp, reaction l Water Paper is placed in hot press, be 110~120 DEG C in temperature
30~40min is suppressed under conditions of being 6~8MPa with compacting pressure, putting into baking oven after compacting in temperature is 90~100 DEG C
Under the conditions of dry 40~50min up to tear-resistant high-intensitive food wrapper；The specific preparation step of the self-made binder
Are as follows:
(1) hydrochloric acid that alkaline reaction liquid and mass fraction are 8~10% is put into beaker, with blender with 120~
The revolving speed of 140r/min stirs 30~40min and mixed liquor is made, and it is molten that the citric acid that mass fraction is 6~10% is added dropwise into beaker
Liquid places the beaker in sonic oscillation instrument, and modified mixed liquor is made in 2~3h of oscillation under conditions of frequency is 32~36kHz；
(2) aluminum chloride powder is added into beaker, with agitating device with the revolving speed of 300~350r/min stirring 30~
The sodium hydroxide solution that mass fraction is 6~10% is added dropwise into beaker and adjusts pH value to 6.6~7.0, beaker is set by 40min
In the water-bath that bath temperature is 60~80 DEG C, 60~80min is stirred with the revolving speed of 260~300r/min with blender, is stirred
Filter residue is obtained by filtration after mixing, reaction product is made；
(3) reaction product is put into Muffle furnace, argon gas will be full of in Muffle furnace, increase Muffle in-furnace temperature to 300~
320 DEG C, thermal response product is made in 60~80min of isothermal reaction, the ethylene glycol for being 6~10% by thermal response product and mass fraction
Be uniformly mixed in solution investment beaker and prefabricated dispersion liquid be made, Chitosan powder is added into beaker, with blender with 60~
The revolving speed of 100r/min stirs 3~4h, and filter cake, as self-made binder are obtained by filtration after stirring；
The specific preparation step of the alkaline reaction liquid are as follows:
(1) sawdust and SiO 2 powder are put into planetary ball mill, is 300~360r/min and ratio of grinding media to material in revolving speed
Mixture is made to grind 60~80min under conditions of 10:1, the sodium hydroxide for being 12~15% by mixture and mass fraction
Solution is put into beaker, is placed the beaker in the water-bath that bath temperature is 95~100 DEG C, with blender with 300~350r/
The revolving speed of min stirs 40~50min and reacting slurry is made；
(2) cotton fiber is added into beaker, 40~50min is stirred with the revolving speed of 100~120r/min with blender, it will
Beaker is placed in oil bath pan, and oil bath temperature in oil bath pan is increased to 140~150 DEG C, under constant temperature with blender with 500~
The revolving speed constant temperature of 600r/min stirs 60~80min and alkaline reaction liquid is made.
The mass ratio of the self-made binder and paper pulp is 1:20.
The salt that alkaline reaction liquid described in the specific preparation step (1) of self-made binder and mass fraction are 8~10%
The mass ratio of acid is 1:5.
The mass fraction being added dropwise described in the specific preparation step (1) of self-made binder into beaker is 6~10%
The quality of citric acid solution is the 15~20% of mixed liquor quality.
The quality of modified aluminum chloride powder is added described in the specific preparation step (2) of self-made binder into beaker
It is the 2~4% of mixed liquor quality.
The second that thermal response product described in the specific preparation step (3) of self-made binder and mass fraction are 6~10%
The mass ratio of glycol solution is 1:10.
The quality for the Chitosan powder added described in the specific preparation step (3) of self-made binder into beaker is pre-
The 3~5% of dispersion liquid quality processed.
The mass ratio of sawdust described in the specific preparation step (1) of alkaline reaction liquid and SiO 2 powder is 15:1.
The hydroxide that mixture described in the specific preparation step (1) of alkaline reaction liquid and mass fraction are 12~15%
The mass ratio of sodium solution is 1:5.
The quality for the cotton fiber being added described in the specific preparation step (1) of alkaline reaction liquid into beaker is reaction
The 5~7% of grind slurries quality.
The method have the benefit that:
(1) present invention puts into after grinding first by sawdust and silica mixed grinding and reacts system in sodium hydroxide solution
Reacting slurry is obtained, cotton fiber high-temperature stirring is added and alkaline reaction liquid is made, hydrochloric acid will be added in alkaline reaction liquid, then be added dropwise
Modified mixed liquor is made in citric acid oscillation, then to aluminium chloride is added in modified mixed liquor, adjusts pyroreaction after pH value, reaction
It filters afterwards and reaction product is made, thermal response product then is made in reaction product high-temperature process, thermal response product is put into second two
It is stirred in alcoholic solution, adds Chitosan powder mixing, self-made binder is obtained by filtration after stirring, it finally will self-control
Binder is mixed with paper pulp, is manufactured paper with pulp, hot pressing, is drying to obtain tear-resistant high-intensitive food wrapper, the present invention passes through sawdust, cotton
It crosses alkaline reaction and extracts sawdust, the lignin in cotton, plant fiber, the ingredients such as cellulose, using containing in these organic principles
A large amount of hydroxyl, the carboxylic group having generate Hydrogen Binding Adsorption effect, bond each ingredient in food wrapper, while fibre composition exists
It packs and generates complex cross-linked structure in paper structure, to enhance the toughness and mechanical strength of wrapping paper, to improve the resistance to of wrapping paper
Tearing ability carbonizes fibre composition part by high-temperature process, and the hardness of reinforcing fiber further increases the power of wrapping paper
Intensity is learned, the toughness of food wrapper, tear-resistant ability are improved；
(2) silica is made silica hydrolysis generate silicate ion by the present invention by high temperature alkaline solution reaction, by silicon
Acid ion is scattered in plant fiber structure, then is adjusted to be heated at high temperature after pH value to neutrality and generated silica dioxide granule again and mention
The dispersibility of high silicon dioxide in the fiber structure, be scattered in wrapper surface be conducive to improve wrapping paper mechanical strength and
Structure degree, then fibre composition is carbonized, enhance the degree of roughness of fiber, improves the adsorption capacity to chitosan, from
And a large amount of constituent of chitosan is adsorbed, enhance the antibacterial bacteriostatic effect of food wrapper, has broad application prospects.
Specific embodiment
In mass ratio it is in 15:1 investment planetary ball mill by sawdust and SiO 2 powder, is 300~360r/ in revolving speed
Mixture is made in 60~80min of grinding under conditions of min and ratio of grinding media to material are 10:1, is 12~15% by mixture and mass fraction
Sodium hydroxide solution be in mass ratio in 1:5 investment beaker, placing the beaker bath temperature is 95~100 DEG C of water-bath
In, 40~50min is stirred with the revolving speed of 300~350r/min with blender, reacting slurry is made；It is added into above-mentioned beaker anti-
The cotton fiber for answering grind slurries quality 5~7% stirs 40~50min with blender with the revolving speed of 100~120r/min, by beaker
Be placed in oil bath pan, oil bath temperature in oil bath pan be increased to 140~150 DEG C, under constant temperature with blender with 500~
The revolving speed constant temperature of 600r/min stirs 60~80min and alkaline reaction liquid is made；By above-mentioned alkaline reaction liquid and mass fraction be 8~
10% hydrochloric acid is to stir 30~40min with blender in 1:5 investment beaker with the revolving speed of 120~140r/min in mass ratio
Mixed liquor is made, the citric acid solution that the mass fraction of mixed liquor quality 15~20% is 6~10% is added dropwise into beaker, will burn
Cup is placed in sonic oscillation instrument, and modified mixed liquor is made in 2~3h of oscillation under conditions of frequency is 32~36kHz；To above-mentioned burning
The aluminum chloride powder that modified mixed liquor quality 2~4% is added in cup is stirred with agitating device with the revolving speed of 300~350r/min
The sodium hydroxide solution that mass fraction is 6~10% is added dropwise into beaker and adjusts pH value to 6.6~7.0, will burn by 30~40min
Cup is placed in bath temperature, with blender with the revolving speed stirring 60 of 260~300r/min~
80min is obtained by filtration filter residue and reaction product is made after stirring；Above-mentioned reaction product is put into Muffle furnace, will be filled in Muffle furnace
Full argon gas increases Muffle in-furnace temperature to 300~320 DEG C, and thermal response product is made in 60~80min of isothermal reaction, by thermal response
Product is to be uniformly mixed to be made prefabricated point in 1:10 investment beaker with the ethylene glycol solution that mass fraction is 6~10% in mass ratio
Dispersion liquid adds the Chitosan powder of prefabricated dispersion liquid quality 3~5% into beaker, with blender turning with 60~100r/min
Speed 3~4h of stirring, is obtained by filtration filter cake, as self-made binder after stirring；In mass ratio by above-mentioned self-made binder and paper pulp
It puts into be uniformly mixed in stirred tank for 1:20 and prefabricated slurries is made, prefabricated slurries are put into paper making machine and are manufactured paper with pulp, are copied
Reaction l Water Paper is obtained after making, reaction l Water Paper is placed in hot press, and in temperature be 110~120 DEG C and compacting pressure is 6~8MPa
Under conditions of suppress 30~40min, dry 40~50min under conditions of temperature is 90~100 DEG C is put into baking oven after compacting
Up to tear-resistant high-intensitive food wrapper.
Embodiment 1
The preparation of self-made binder:
Be in mass ratio in 1:5 investment beaker by the hydrochloric acid that alkaline reaction liquid and mass fraction are 8%, with blender with
Mixed liquor is made in the revolving speed stirring 30min of 120r/min, and the mass fraction that mixed liquor quality 15% is added dropwise into beaker is 6%
Citric acid solution places the beaker in sonic oscillation instrument, and modified mixed liquor is made in oscillation 2h under conditions of frequency is 32kHz；
The aluminum chloride powder that modified mixed liquor quality 2% is added into above-mentioned beaker, with agitating device with 300r/min's
Revolving speed stirs 30min, and the sodium hydroxide solution that mass fraction is 6% is added dropwise into beaker and adjusts pH value to 6.6, places the beaker
In the water-bath that bath temperature is 60 DEG C, 60min is stirred with the revolving speed of 260r/min with blender, filter residue is obtained by filtration after stirring
Reaction product is made；
Above-mentioned reaction product is put into Muffle furnace, argon gas will be full of in Muffle furnace, increases Muffle in-furnace temperature to 300
DEG C, thermal response product is made in isothermal reaction 60min, and the ethylene glycol solution that thermal response product and mass fraction are 6% is pressed quality
Prefabricated dispersion liquid is made than putting into be uniformly mixed in beaker for 1:10, the shell that prefabricated dispersion liquid quality 3% is added into beaker is poly-
Icing Sugar end stirs 3h with blender with the revolving speed of 60r/min, filter cake, as self-made binder is obtained by filtration after stirring；
The preparation of alkaline reaction liquid:
Be in mass ratio in 15:1 investment planetary ball mill by sawdust and SiO 2 powder, revolving speed be 300r/min and
Mixture is made in grinding 60min under conditions of ratio of grinding media to material is 10:1, and mixture is molten for 12% sodium hydroxide with mass fraction
Liquid is to place the beaker in the water-bath that bath temperature is 95 DEG C, in 1:5 investment beaker with blender with 300r/ in mass ratio
Reacting slurry is made in the revolving speed stirring 40min of min；
The cotton fiber of reacting slurry quality 5% is added into above-mentioned beaker, is stirred with blender with the revolving speed of 100r/min
Mix 40min, place the beaker in oil bath pan, oil bath temperature in oil bath pan is increased to 140 DEG C, under constant temperature with blender with
Alkaline reaction liquid is made in the revolving speed constant temperature stirring 60min of 500~600r/min；
The preparation of tear-resistant high intensity food wrapper:
It is in mass ratio to be uniformly mixed that prefabricated slurries are made in 1:20 investment stirred tank with paper pulp by self-made binder, it will be pre-
It manufactures paper with pulp in slurrying liquid investment paper making machine, reaction l Water Paper is obtained after manufacturing paper with pulp, reaction l Water Paper is placed in hot press, in temperature
It spends for 110 DEG C and suppresses under conditions of pressure is 6MPa and suppress 30min, put into baking oven after compacting in condition at a temperature of 90 °C
Lower dry 40min is up to tear-resistant high-intensitive food wrapper.
Embodiment 2
The preparation of self-made binder:
Be in mass ratio in 1:5 investment beaker by the hydrochloric acid that alkaline reaction liquid and mass fraction are 9%, with blender with
Mixed liquor is made in the revolving speed stirring 35min of 130r/min, and the mass fraction that mixed liquor quality 17% is added dropwise into beaker is 8%
Citric acid solution places the beaker in sonic oscillation instrument, and modified mixed liquor is made in oscillation 2h under conditions of frequency is 34kHz；
The aluminum chloride powder that modified mixed liquor quality 3% is added into above-mentioned beaker, with agitating device with 320r/min's
Revolving speed stirs 35min, and the sodium hydroxide solution that mass fraction is 8% is added dropwise into beaker and adjusts pH value to 6.8, places the beaker
In the water-bath that bath temperature is 70 DEG C, 70min is stirred with the revolving speed of 280r/min with blender, filter residue is obtained by filtration after stirring
Reaction product is made；
Above-mentioned reaction product is put into Muffle furnace, argon gas will be full of in Muffle furnace, increases Muffle in-furnace temperature to 310
DEG C, thermal response product is made in isothermal reaction 70min, and the ethylene glycol solution that thermal response product and mass fraction are 8% is pressed quality
Prefabricated dispersion liquid is made than putting into be uniformly mixed in beaker for 1:10, the shell that prefabricated dispersion liquid quality 4% is added into beaker is poly-
Icing Sugar end stirs 3h with blender with the revolving speed of 80r/min, filter cake, as self-made binder is obtained by filtration after stirring；
The preparation of alkaline reaction liquid:
Be in mass ratio in 15:1 investment planetary ball mill by sawdust and SiO 2 powder, revolving speed be 330r/min and
Mixture is made in grinding 70min under conditions of ratio of grinding media to material is 10:1, and mixture is molten for 13% sodium hydroxide with mass fraction
Liquid is to place the beaker in the water-bath that bath temperature is 98 DEG C, in 1:5 investment beaker with blender with 320r/ in mass ratio
Reacting slurry is made in the revolving speed stirring 45min of min；
The cotton fiber of reacting slurry quality 6% is added into above-mentioned beaker, is stirred with blender with the revolving speed of 110r/min
Mix 45min, place the beaker in oil bath pan, oil bath temperature in oil bath pan is increased to 145 DEG C, under constant temperature with blender with
Alkaline reaction liquid is made in the revolving speed constant temperature stirring 70min of 550r/min；
The preparation of tear-resistant high intensity food wrapper:
It is in mass ratio to be uniformly mixed that prefabricated slurries are made in 1:20 investment stirred tank with paper pulp by self-made binder, it will be pre-
It manufactures paper with pulp in slurrying liquid investment paper making machine, reaction l Water Paper is obtained after manufacturing paper with pulp, reaction l Water Paper is placed in hot press, in temperature
Degree for 115 DEG C and compacting pressure be 7MPa under conditions of suppress 35min, putting into baking oven after compacting in temperature is 95 DEG C of condition
Lower dry 45min is up to tear-resistant high-intensitive food wrapper.
Embodiment 3
The preparation of self-made binder:
Be in mass ratio in 1:5 investment beaker by the hydrochloric acid that alkaline reaction liquid and mass fraction are 10%, with blender with
Mixed liquor is made in the revolving speed stirring 40min of 140r/min, and the mass fraction that mixed liquor quality 20% is added dropwise into beaker is 10%
Citric acid solution, place the beaker in sonic oscillation instrument, modified mixing is made in oscillation 3h under conditions of frequency is 36kHz
Liquid；
The aluminum chloride powder that modified mixed liquor quality 4% is added into above-mentioned beaker, with agitating device with 350r/min's
Revolving speed stirs 40min, and the sodium hydroxide solution that mass fraction is 10% is added dropwise into beaker and adjusts pH value to 7.0, beaker is set
In the water-bath that bath temperature is 80 DEG C, 80min is stirred with the revolving speed of 300r/min with blender, filter is obtained by filtration after stirring
Reaction product is made in slag；
Above-mentioned reaction product is put into Muffle furnace, argon gas will be full of in Muffle furnace, increases Muffle in-furnace temperature to 320
DEG C, thermal response product is made in isothermal reaction 80min, and the ethylene glycol solution that thermal response product and mass fraction are 10% is pressed quality
Prefabricated dispersion liquid is made than putting into be uniformly mixed in beaker for 1:10, the shell that prefabricated dispersion liquid quality 5% is added into beaker is poly-
Icing Sugar end stirs 4h with blender with the revolving speed of 100r/min, filter cake, as self-made binder is obtained by filtration after stirring；
The preparation of alkaline reaction liquid:
Be in mass ratio in 15:1 investment planetary ball mill by sawdust and SiO 2 powder, revolving speed be 360r/min and
Mixture is made in grinding 80min under conditions of ratio of grinding media to material is 10:1, and mixture is molten for 15% sodium hydroxide with mass fraction
Liquid is to place the beaker in the water-bath that bath temperature is 100 DEG C, in 1:5 investment beaker with blender with 350r/ in mass ratio
Reacting slurry is made in the revolving speed stirring 50min of min；
The cotton fiber of reacting slurry quality 7% is added into above-mentioned beaker, is stirred with blender with the revolving speed of 120r/min
Mix 50min, place the beaker in oil bath pan, oil bath temperature in oil bath pan is increased to 150 DEG C, under constant temperature with blender with
Alkaline reaction liquid is made in the revolving speed constant temperature stirring 80min of 500~600r/min；
The preparation of tear-resistant high intensity food wrapper:
It is in mass ratio to be uniformly mixed that prefabricated slurries are made in 1:20 investment stirred tank with paper pulp by self-made binder, it will be pre-
It manufactures paper with pulp in slurrying liquid investment paper making machine, reaction l Water Paper is obtained after manufacturing paper with pulp, reaction l Water Paper is placed in hot press, in temperature
Degree for 120 DEG C and compacting pressure be 8MPa under conditions of suppress 40min, putting into baking oven after compacting in temperature is 100 DEG C of item
Dry 50min is under part up to tear-resistant high-intensitive food wrapper.
Comparative example 1: it is essentially identical with the preparation method of embodiment 2, it has only the difference is that lacking alkaline reaction liquid.
Comparative example 2: it is essentially identical with the preparation method of embodiment 2, it has only the difference is that lacking self-made binder.
Comparative example 3: the food wrapper of Henan company production.
Food wrapper in each embodiment and comparative example is placed in culture dish, be added into culture dish Escherichia coli,
Gold goal bacterium and culture solution, temperature is stands 5 days in 30~35 DEG C of greenhouse, before taking out the dry weighing of food wrapper and being put into
It packs paper quality and carries out ratio.
Elongation at break test is detected using elongation at break tester.
Table 1: nanofiltration membrane performance measurement result
In summary, food wrapper mechanical strength of the invention is good as can be seen from Table 1, is not easy to be torn, antibacterial
Fungistatic effect is good, has broad prospect of application.
The foregoing is merely preferred modes of the invention, are not intended to limit the invention, all in spirit and original of the invention
Within then, any modification, equivalent replacement, improvement and so on should be included within the scope of the present invention.
Claims (10)
1. a kind of preparation method of tear-resistant high-intensitive food wrapper, it is characterised in that specific preparation step are as follows:
Prefabricated slurries are made by being uniformly mixed in self-made binder and paper pulp investment stirred tank, prefabricated slurries are put into paper making
It manufactures paper with pulp in machine, reaction l Water Paper is obtained after manufacturing paper with pulp, reaction l Water Paper is placed in hot press, be 110~120 DEG C and pressure in temperature
Pressure processed suppresses 30~40min under conditions of being 6~8MPa, and the condition for being 90~100 DEG C in temperature in baking oven is put into after compacting
40~50min of lower drying is up to tear-resistant high-intensitive food wrapper；The specific preparation step of the self-made binder are as follows:
(1) hydrochloric acid that alkaline reaction liquid and mass fraction are 8~10% is put into beaker, with blender with 120~140r/
The revolving speed of min stirs 30~40min and mixed liquor is made, and the citric acid solution that mass fraction is 6~10% is added dropwise into beaker, will
Beaker is placed in sonic oscillation instrument, and modified mixed liquor is made in 2~3h of oscillation under conditions of frequency is 32~36kHz；
(2) aluminum chloride powder is added into beaker, and 30~40min is stirred with the revolving speed of 300~350r/min with agitating device, to
The sodium hydroxide solution that mass fraction is 6~10% is added dropwise in beaker and adjusts pH value to 6.6~7.0, places the beaker water-bath temperature
In the water-bath that degree is 60~80 DEG C, 60~80min is stirred with the revolving speed of 260~300r/min with blender, is filtered after stirring
It obtains filter residue and reaction product is made；
(3) reaction product is put into Muffle furnace, argon gas will be full of in Muffle furnace, increase Muffle in-furnace temperature to 300~320
DEG C, thermal response product is made in 60~80min of isothermal reaction, and thermal response product is molten for 6~10% ethylene glycol with mass fraction
It is uniformly mixed in liquid investment beaker and prefabricated dispersion liquid is made, Chitosan powder is added into beaker, with blender with 60~100r/
The revolving speed of min stirs 3~4h, and filter cake, as self-made binder are obtained by filtration after stirring；
The specific preparation step of the alkaline reaction liquid are as follows:
(1) by sawdust and SiO 2 powder investment planetary ball mill, in revolving speed be 300~360r/min and ratio of grinding media to material is
60~80min is ground under conditions of 10:1, and mixture is made, mixture is molten for 12~15% sodium hydroxide with mass fraction
Liquid is put into beaker, is placed the beaker in the water-bath that bath temperature is 95~100 DEG C, with blender with 300~350r/min
Revolving speed stir 40~50min be made reacting slurry；
(2) cotton fiber is added into beaker, 40~50min is stirred with the revolving speed of 100~120r/min with blender, by beaker
Be placed in oil bath pan, oil bath temperature in oil bath pan be increased to 140~150 DEG C, under constant temperature with blender with 500~
The revolving speed constant temperature of 600r/min stirs 60~80min and alkaline reaction liquid is made.
2. the preparation method of the tear-resistant high-intensitive food wrapper of one kind according to claim 1, it is characterised in that: described
Self-made binder and paper pulp mass ratio be 1:20.
3. the preparation method of the tear-resistant high-intensitive food wrapper of one kind according to claim 1, it is characterised in that: self-control
The mass ratio for the hydrochloric acid that alkaline reaction liquid described in the specific preparation step (1) of binder is 8~10% with mass fraction is
1:5.
4. the preparation method of the tear-resistant high-intensitive food wrapper of one kind according to claim 1, it is characterised in that: self-control
The citric acid solution that the mass fraction being added dropwise described in the specific preparation step (1) of binder into beaker is 6~10%
Quality is the 15~20% of mixed liquor quality.
5. the preparation method of the tear-resistant high-intensitive food wrapper of one kind according to claim 1, it is characterised in that: self-control
The quality for adding modified aluminum chloride powder described in the specific preparation step (2) of binder into beaker is mixed liquor quality
2~4%.
6. the preparation method of the tear-resistant high-intensitive food wrapper of one kind according to claim 1, it is characterised in that: self-control
The matter for the ethylene glycol solution that thermal response product described in the specific preparation step (3) of binder and mass fraction are 6~10%
Amount is than being 1:10.
7. the preparation method of the tear-resistant high-intensitive food wrapper of one kind according to claim 1, it is characterised in that: self-control
The quality for the Chitosan powder added described in the specific preparation step (3) of binder into beaker is prefabricated dispersion liquid quality
3~5%.
8. the preparation method of the tear-resistant high-intensitive food wrapper of one kind according to claim 1, it is characterised in that: alkalinity
The mass ratio of sawdust described in the specific preparation step (1) of reaction solution and SiO 2 powder is 15:1.
9. the preparation method of the tear-resistant high-intensitive food wrapper of one kind according to claim 1, it is characterised in that: alkalinity
The quality for the sodium hydroxide solution that mixture described in the specific preparation step (1) of reaction solution and mass fraction are 12~15%
Than for 1:5.
10. the preparation method of the tear-resistant high-intensitive food wrapper of one kind according to claim 1, it is characterised in that: alkali
Property reaction solution specific preparation step (1) described in the quality of cotton fiber that is added into beaker be reacting slurry quality
5~7%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110684341A (en) * | 2019-10-10 | 2020-01-14 | 马贵其 | Preparation method of impact-resistant insulation board |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110684341A (en) * | 2019-10-10 | 2020-01-14 | 马贵其 | Preparation method of impact-resistant insulation board |
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Application publication date: 20190903 |