CN100475657C - Plant fiber food packaging material capable of tolerating high-temperature baking and producing method thereof - Google Patents
Plant fiber food packaging material capable of tolerating high-temperature baking and producing method thereof Download PDFInfo
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- CN100475657C CN100475657C CNB200410000529XA CN200410000529A CN100475657C CN 100475657 C CN100475657 C CN 100475657C CN B200410000529X A CNB200410000529X A CN B200410000529XA CN 200410000529 A CN200410000529 A CN 200410000529A CN 100475657 C CN100475657 C CN 100475657C
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- vegetable fibre
- plant fiber
- temperature baking
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Abstract
The present invention is food packing plant fiber material and its production process. The production process includes preparing active aluminum silicate compound with anionic compound assistant, preparing natural wax emulsifier, mixing plant fiber material and water in pulping machine to form homogeneous paper pulp and storing the paper pulp in pulp storage; mixing fluoric resin containing non-ionic compound assistant and anionic compound assistant, polyester, polyamine resin or other polymer, improved acrylic resin with the pulp in the pulp storage; making container in a paper-plastic forming machine; stripping coating and drying treatment.
Description
Technical field
The present invention is about a kind of feature of environmental protection plant fibre food package material, particularly about a kind of high-temperature baking and anxious prescription and production method thereof of freezing the feature of environmental protection plant fibre food package material of preservation of can be used for.
Background technology
Taking a broad view of general commonly used paper moulding industrial packaging goods and be with sugarcane slurry, reed pulp, paper leftover pieces etc. is primary raw material, through the diffusing slurry of waterpower, on the metal die through vacuum adsorption molding, directly behind the curing molding, major part makes use acryl, latex, resin or paint (paint that for example contains EVA vinyl acetate composition) carry out surface treatment.And resin and general paint non-refractory all, when meeting high temperature, the surface easily begins to produce the stripping phenomenon, its leachable is mixed in the food easily, taken in by human body, will have significant impact, to the mankind's threat even above Bao Lilong tableware or plastic tableware health.
In other paper moulding industrial packaging goods technology; there are the various distinct methods of use and material to be made and declare to have the packing container that environmental protection maybe can be decomposed effect; for example in the prior art; Republic of China's patent announcement is numbered in No. 600746 patent; disclosed a kind of disposable use vegetable fibre environment protecting tableware manufacture method and additive formulations, its step is as follows: a; gather the chaff raw material: respectively with straw kind (as the rice bar; straw; cornstalk ... Deng); the husk class is (as rice husk; wheat husk; the jowar shell ... Deng); waste residue class (corn ear slag; bagasse; soybean residue; wood chip ... Deng); starch based (cornstarch; farina; tapioca starch ... Deng) etc. the avirulence plant tissue be primary raw material.B, washing:, and, wash away the impurity such as earth on the chaff raw material with water column flushing chaff raw material with chaff raw material warp let-off wash trough.C, centrifugal drying: the chaff raw material drying after the above-mentioned washing is handled.D, pulverizing: the chaff of above-mentioned oven dry is pulverized the formation powder.E, batch mixing: the chaff after pulverizing 86% is a powder, with 2% additive and 12% water, is uniformly mixed into batch mixing.This additive formulations comprises 90% special edible glue, 4.5% sulfate, 4.5% stearic acid, and 1% fruit glaze agent, this special edible glue is that 28% latex, 21% pectin, 21% protein adhesive mix, its viscosity controller is at 25～50 seconds, and this fruit glaze agent is that 80% special edible glue, 8% calcium chloride and 12% alum are mixed and made into.F, compression molding: give above-mentioned batch mixing hot-forming.G, oven dry, ultraviolet sterilization: after the demoulding, with oven dry of the finished product warp let-off first road and ultraviolet sterilization, and this chaff system can handle through decolouring, makes finished product can spray color pattern, again through oven dry of second road and ultraviolet-sterilization.H, QC and packing: this finished product can be packed listing after checking through QC.
Again for example in the prior art, the TaiWan, China patent announcement is numbered in No. 223008 patent, disclosed a kind of method for making of packing container of Biodegradable material, its step comprises with liquid state or supercritical fluid and removes fat and make a kind of ctgf protein from the animal connective tissue, make a compound, the ctgf protein that comprises 2～40% weight ratios, the starchiness cereal or the plant material of 60～90% weight ratios, the salt of 0～5% weight ratio, the sugar of 0～10% weight ratio, food toner at random, its percentage by weight is with respect to total solid content, following 10 seconds to 2 minutes of the temperature and the 2.07MPa (300psi) of this compound in 180 to 200 degree are pushed to 5.86MPa (850psi) pressure, the water that adds about 10% weight ratio in crumpling process is processed material to form shaping, and this pressurizing medium is moulded this article with injection molding.
Summary of the invention
Though in the prior art, have manyly relevant for can decomposing or the packing of environment-friendly type or the manufacturing technology of tableware product, but still deposited many shortcomings.
General vegetable fibre environment-friendly type maybe can be decomposed in the manufacturing process and prescription of packing or tableware product, can't guarantee employed raw material because of it is to be easy to the Biodegradable material, promptly possibly can't be in soil absolutely decompose, yes can cause the problem of environmental quality.Moreover, general vegetable fibre environment protecting tableware with the common technology made, more can't be placed into the baking use that micro-wave oven and baking box etc. bear higher temperature, even the food that the end all can't be taken is with same container, use the mode of IQF to continue to preserve, all shortcomings all can cause the customer to perplex greatly, have also hindered the popularization that environment-friendly type maybe can be decomposed packing or tableware product.
Therefore, if can invent out a kind of higher bake out temperature and anxious environment protection plant fibre packaging material for food and production method thereof of freezing preservation of bearing at the shortcoming of above-mentioned vegetable fibre environment protecting tableware, then real most important for industrial community, and for the user, also provide another selection of a high stability, high-quality, high texture.
Edge this, main purpose of the present invention promptly provides a kind of bakeable feature of environmental protection plant fibre food package material, when particularly providing ordinary consumer to buy food with food prepared therefrom container packaging of the present invention, can use micro-wave oven or the baking box food with the high-temperature baking food containers packaging of 200 degree Celsius, this container may also indeformable after overbaking or surface breakdown.
Another object of the present invention provides a kind of bakeable feature of environmental protection plant fibre food package material, when particularly providing ordinary consumer to buy food with food prepared therefrom container packaging of the present invention, can use the mode of IQF to continue to preserve food, because this food prepared therefrom container of the present invention is preserved under the environment of subzero 35 degree Celsius, and this food containers can not deform or the possibility of skin breakage.
Another object of the present invention provides a kind of bakeable feature of environmental protection plant fibre food package material, and glutinous phenomenon can be stained with provision room in the surface of the food containers of making in the present invention who handles through overbaking.
Another object of the present invention provides a kind of method of producing bakeable feature of environmental protection plant fibre food package material, the present invention is in production method, with distinctive prescription proportion and through the specific technology and the steps such as auxiliary agent of special adding proportion, be suitable for high-temperature baking and the anxious feature of environmental protection plant fibre food package material of preservation that freezes to produce.
The present invention is in environment protection plant fibre packaging material for food and exclusive production method thereof for the technological means that problem adopted that solves known technology, and its step etc. of filling a prescription proportion accurately and adding auxiliary agent in technology all is crucial technological means.
But comprise that at the prescription of the plant fibre food package feature of environmental protection material of high-temperature baking resistant of the present invention the natural waxes emulsifying agent of the active silicic acid aluminium compound of 50～80 percentage by weights and 1.5～9 percentage by weights is in conjunction with being mixed into even vegetable fibre paper pulp slurry with the vegetable fibre paper pulp raw material of 100 percentage by weights and the moisture content of 990 percentage by weights.If for example with this vegetable fibre paper pulp raw material for it percentage by weight be 100, then the percentage by weight of this this active silicic acid aluminium compound is 50～80, and the percentage by weight of natural waxes emulsifying agent is 1.5～9.When vegetable fibre paper pulp raw material when percentage by weight is 100 for it, then the percentage by weight of moisture content just is 990.
In addition the prescription of preparation comprises that the polyamine of the polyester of fluorine prime system resin, 0.9～7.2 percentage by weight of 0.75～5.4 percentage by weight and high molecular polymer, 0.15～0.54 percentage by weight is that the improvement acryl of resin, 0.75～9 percentage by weight is a resin again.In paper make-up machine slurry storage tank, store and form mixed slurry of the present invention by above-mentioned two assembly sides.
But production method at the plant fibre food package feature of environmental protection material of high-temperature baking resistant of the present invention, it comprises: preparation contains the active silicic acid aluminium compound and the natural waxes emulsifying agent of auxiliary agent of anionic property compound formulas, inserts in the starch dispensing machine mixed plant fibre pulp raw material and moisture content and stirs into to insert in the paper make-up machine slurry storage tank behind the even vegetable fibre paper pulp slurry and store.Inferior fluorine prime system resin, polyester and high molecular polymer, the polyamine that preparation is contained the auxiliary agent of nonionic cmpd and cationic compound prescription is that resin, improvement acryl are that resin is also inserted in this slurry storage tank and stored.In this slurry storage tank by above-mentioned both form mixed slurry, make container by the paper make-up machine, through from shape coating and dry, promptly do not finish the person again.
The present invention contrasts the effect of prior art
Via the technology used in the present invention means, compared to plant fibre food package container commonly used, not only can be so that need not add any plastics in the technology of the present invention, to meet the environmental protection standard, as pollution-free, nuisanceless, safety and sanitation etc., certain manufactured product of the present invention is all and can reclaims the thing finished product of making nonfood grade again, if manufactured product quilt of the present invention is as garbage disposal, when burning, can not produce toxic substance yet, can not cause water to pollute during hydrolysis, do not abandon and can cause the secondary pollution problem, use effectively to use later and handle and then mix use with fertilizer, and have more the heat-resistant quality that 200 degree Celsius can toast processing, make container after process high temperature, can not decompose the material of unfavorable health of human body.
Description of drawings
Fig. 1 is the production method of plant fiber food packaging material capable of tolerating high-temperature baking of the present invention.
Fig. 2 is that the present invention is in order to realize the system schematic of the prepared cooperation of production method shown in Figure 1.
1: the auxiliary agent that contains the anionic property compound formulas
1a: active silicic acid aluminium compound
1b: natural waxes emulsifying agent
2: the auxiliary agent that contains nonionic cmpd and cationic compound prescription
2a: fluorine prime system resin
2b: polyester and high molecular polymer
2c: polyamine is a resin
2d: the improvement acryl is a resin
3: vegetable fibre paper pulp raw material
4: moisture content
5: even vegetable fibre paper pulp slurry
6: mixed slurry
7: the starch dispensing machine groove
8: release coating formulation
8a: mold release
8b: bridging agent
8c: dilution water
9: slurry storage tank
9a: paper make-up machine
10: release apparatus for coating
11: drying process device
A: prescription groove
B: prescription groove
C: prescription groove
The specific embodiment
Consult shown in Figure 1ly, it is the production method of plant fiber food packaging material capable of tolerating high-temperature baking of the present invention, and Fig. 2 for the present invention in order to realize the system schematic of the prepared cooperation of production method shown in Figure 1.
Now consult Figure 1 and Figure 2 simultaneously, to production method of the present invention and prescription do one describe in detail as after.The prescription of plant fiber food packaging material capable of tolerating high-temperature baking of the present invention mainly is the mixed slurry 6 that auxiliary agent 2, vegetable fibre paper pulp raw material 3 and the moisture content 4 etc. that comprise the auxiliary agent 1 that contains anion (Anionic) property compound formulas, contain nonionic (Nonionic) cmpd and cationic (Cationic) compound formulas are formed according to manufacture method of the present invention, makes the bakeable feature of environmental protection plant fibre food package of the present invention container of material by paper make-up machine 9a again.
This auxiliary agent 1 that contains the anionic property compound formulas comprises active silicic acid aluminium compound (Inorganic Aluminum Silicate) 1a, natural waxes emulsifying agent (Natural waxemulsion) 1b.Wherein this auxiliary agent 2 that contains nonionic cmpd and cationic compound prescription comprises that fluorine prime system resin (Fluorochemical series) 2a, polyester and high molecular polymer 2b (High polymer compound), polyamine are that resin (Aliphatic polyamine) 2c, improvement acryl are resin (Alkyl acryl copolymers) 2d.
If the weight of this this vegetable fibre paper pulp raw material 3 is 1, then the weight of this moisture content 4 is 99.Wherein this active silicic acid aluminium compound 1a that contains the auxiliary agent 1 of anionic property compound formulas is 50～80 with respect to the percentage by weight of this vegetable fibre paper pulp raw material 3.This natural waxes emulsifying agent 1b that contains the auxiliary agent 1 of anionic property compound formulas is 1.5～9 with respect to the percentage by weight of this vegetable fibre paper pulp raw material 3.
And this fluorine prime system resin 2a that contains the auxiliary agent 2 of nonionic cmpd and cationic compound prescription is 0.75～5.4 with respect to the percentage by weight of this vegetable fibre paper pulp raw material 3.This contains the polyester of auxiliary agent 2 of nonionic cmpd and cationic compound prescription and high molecular polymer 2b is 0.9～7.2 with respect to the percentage by weight of this vegetable fibre paper pulp raw material 3.This polyamine that contains the auxiliary agent 2 of nonionic cmpd and cationic compound prescription is resin 2c with respect to the percentage by weight of this vegetable fibre paper pulp raw material 3 is 0.15～0.54.This improvement acryl that contains the auxiliary agent 2 of nonionic cmpd and cationic compound prescription is resin 2d with respect to the percentage by weight of this vegetable fibre paper pulp raw material is 0.75～9.
The selected vegetable fibre paper pulp raw material 3 of the prescription of bakeable environment protection plant fibre packaging material for food of the present invention is to be the primary raw material person of being mixed and made into a few kinds of vegetable fibres, and the vegetable fibre paper pulp of this vegetable fibre is to be selected from one of reed pulp, cane syrup, straw pulp, straw pulp, bamboo pulp, wood pulp.
In the prescription of plant fiber food packaging material capable of tolerating high-temperature baking of the present invention, this active silicic acid aluminium compound 1a is the hydrophobic inorganic sheet aluminium silicate compounds of a kind of anionic property, a kind ofly especially make the functional additive that paper is used, in the paper forming process, add this agent, in technology, not only can shorten dehydration and drying time, more can make manufactured product of the present invention have resistant to elevated temperatures characteristic.
In the prescription of plant fiber food packaging material capable of tolerating high-temperature baking of the present invention, this natural waxes emulsifying agent 1b adds in a kind of system paper of anionic property natural waxes to use the drying auxiliary agent.Use the paper product of making of this natural waxes emulsifying agent 1b, not only have the drying effect, and can improve this tension force of making paper product and surface strength.
In the prescription of plant fiber food packaging material capable of tolerating high-temperature baking of the present invention, this fluorine prime system resin 2a adds the drying auxiliary agent of usefulness and dials oil assistant in a kind of system paper of nonionic cmpd.
In the prescription of plant fiber food packaging material capable of tolerating high-temperature baking of the present invention, this polyester and high molecular polymer 2b are by the formed neutral cementing agent of cationic compound high molecular polymer.
In the prescription of plant fiber food packaging material capable of tolerating high-temperature baking of the present invention, this polyamine is that resin 2c is a kind of cationic fixative, by merging the auxiliary agent that uses, can promote the fitness of dryingagent and cementing agent, and can improve its drying effect with interior adding with the drying auxiliary agent.
In the prescription of plant fiber food packaging material capable of tolerating high-temperature baking of the present invention, this improvement acryl is that resin 2d is the drying auxiliary agent that adds usefulness in a kind of cationic system paper.
The manufacture method of plant fiber food packaging material capable of tolerating high-temperature baking of the present invention, employed release coating formulation 8 is mold release 8a, bridging agent 8b and dilution water 8c makers-up.Wherein this mold release 8a is 10～100 with respect to the percentage by weight of this mold release 8a and this dilution water 8c total weight, and this dilution water 8c is 90～0 with respect to the percentage by weight of this mold release 8a and this dilution water 8c total weight.For example when mold release 8a be 10 with respect to the percentage by weight of this mold release 8a and this dilution water 8c total weight, then this dilution water 8c is 90 with respect to the percentage by weight of this mold release 8a and this dilution water 8c total weight, if mold release 8a is 100 with respect to the percentage by weight of this mold release 8a and this dilution water 8c total weight, then this dilution water 8c is 0 with respect to the percentage by weight of this mold release 8a and this dilution water 8c total weight.
Moreover the adding proportion of this bridging agent 8b is 5 with respect to the percentage by weight of this mold release 8a.For example if the percentage by weight of mold release 8a is 100, then the percentage by weight of this bridging agent 8b is 5.This bridging agent is the hardener of a kind of polymerization initiator as release coating.
Auxiliary agent in the above-mentioned prescription if from obtaining on the market, for example contain auxiliary agents such as anionic property cmpd, nonionic cmpd and cationic compound, generally must be pressed the record of originating firm specification sheets before use and add the usefulness of suitable moisture content as dilution.
Production method and Fig. 2 of consulting Fig. 1 plant fiber food packaging material capable of tolerating high-temperature baking of the present invention are that the present invention is in order to realize the system schematic of the prepared cooperation of production method shown in Figure 1, this production method is the auxiliary agent 1 (step 101) that contains the anionic property compound formulas in a prescription groove A preparation, be that this auxiliary agent 1 that contains the anionic property compound formulas is inserted in the starch dispensing machine groove 7 again, add moisture content 4 with vegetable fibre paper pulp raw material 3 and be mixed into even vegetable fibre paper pulp slurry (step 102).The appropriate time of this stirring is 10～40 minutes.
In step 103, be the auxiliary agent 2 that contains nonionic cmpd and cationic compound prescription with a prescription groove B preparation.
In step 104, the auxiliary agent 2 of step 103 inserted in the slurry storage tank 9 with the even vegetable fibre paper pulp slurry 5 of step 102 be mixed into mixed slurry.
In step 105, this mixed slurry 6 is carried out the molded processing of hot pressed paper by paper make-up machine 9a, to finish plant fiber food packaging material capable of tolerating high-temperature baking person of the present invention.
In step 106, with the manufactured product of step 105, in release apparatus for coating 10, the release coating formulation 8 that uses prescription groove C to prepare carries out release coating to be handled.
Handle through the drying of step 107 drying process device 11 again, the operating temperature that this drying is handled 120 degree Celsius, the dry time of handling needs 15 seconds approximately.
Again in step 108 with the manufactured product wrapper of step 107.
In the prescription of plant fiber food packaging material capable of tolerating high-temperature baking of the present invention, as contain auxiliary agent, the additive of anionic property cmpd, nonionic cmpd and cationic compound etc., not only adopt the harmless person of health, more can pass through the test stone of the strictness of FDA Food and Drug Administration simultaneously.
By the above preferred embodiment of the present invention as can be known, the prescription of plant fiber food packaging material capable of tolerating high-temperature baking of the present invention and production method really can get a desired effect, and have accorded with the important document of patent already.
Claims (12)
1. a plant fiber food packaging material capable of tolerating high-temperature baking is characterized in that, comprising:
Vegetable fibre paper pulp raw material;
The auxiliary agent that contains the anionic property compound formulas, it is together inserted with this vegetable fibre paper pulp raw material, moisture content and mixes stirring in the starch dispensing machine groove and form even vegetable fibre paper pulp slurry;
Contain the auxiliary agent of nonionic cmpd and cationic compound prescription, itself and this vegetable fibre paper pulp slurry is inserted in the slurry storage tank and is mixed into mixed slurry;
Wherein this mixed slurry carries out molded, release coating of hot pressed paper and dry the processing with a paper make-up machine, and obtains this plant fiber food packaging material capable of tolerating high-temperature baking.
2. plant fiber food packaging material capable of tolerating high-temperature baking as claimed in claim 1, it is characterized in that, this vegetable fibre paper pulp raw material is made with selected vegetable fibre, and the vegetable fibre paper pulp of the vegetable fibre that this is selected is to be selected from one of reed pulp, cane syrup, straw pulp, straw pulp, bamboo pulp.
3. plant fiber food packaging material capable of tolerating high-temperature baking as claimed in claim 1 is characterized in that, this auxiliary agent that contains the anionic property compound formulas includes active silicic acid aluminium compound and natural waxes emulsifying agent.
4. plant fiber food packaging material capable of tolerating high-temperature baking as claimed in claim 3, it is characterized in that, the system paper functional additive that this active silicic acid aluminium compound is a kind of anionic property, this active silicic acid aluminium compound is 50～80 with respect to the percentage by weight of this vegetable fibre paper pulp raw material; And this natural waxes emulsifying agent is the drying auxiliary agent that a kind of anionic property system paper is used, and this natural waxes emulsifying agent is 1.5～9 with respect to the percentage by weight of this vegetable fibre paper pulp raw material.
5. plant fiber food packaging material capable of tolerating high-temperature baking as claimed in claim 1, it is characterized in that this auxiliary agent that contains nonionic cmpd and cationic compound prescription includes fluorine prime system resin, improves acryl is resin, polyester and high molecular polymer, reach polyamine is resin.
6. plant fiber food packaging material capable of tolerating high-temperature baking as claimed in claim 5, it is characterized in that, add the drying auxiliary agent of usefulness in the system paper that this fluorine prime system resin is a kind of nonionic cmpd and dial oil assistant, this fluorine prime system resin is 0.75～5.4 with respect to this vegetable fibre paper pulp raw material weight percentum.
7. plant fiber food packaging material capable of tolerating high-temperature baking as claimed in claim 5, it is characterized in that, this polyester and high molecular polymer are a kind of neutral stationery cementing agents of cationic, and this polyester and high molecular polymer are 0.9～7.2 with respect to this vegetable fibre paper pulp raw material weight percentum.
8. plant fiber food packaging material capable of tolerating high-temperature baking as claimed in claim 5, it is characterized in that, this polyamine is the fixative that resin is added when being a kind of cationic system paper, and this polyamine is that resin is 0.15～0.54 with respect to this vegetable fibre paper pulp raw material weight percentum.
9. plant fiber food packaging material capable of tolerating high-temperature baking as claimed in claim 5, it is characterized in that, the improvement acryl is that resin is the drying auxiliary agent that adds usefulness in a kind of cationic system paper, and this improvement acryl is that resin is 0.75～9 with respect to this vegetable fibre paper pulp raw material weight percentum.
10. a method of producing plant fiber food packaging material capable of tolerating high-temperature baking is characterized in that, comprises the following steps:
(a) preparation vegetable fibre paper pulp raw material, contain the auxiliary agent of anionic property compound formulas and contain the nonionic cmpd auxiliary agent of filling a prescription with cationic compound;
(b) auxiliary agent that this is contained the anionic property compound formulas is inserted in the starch dispensing machine groove, adds the moisture content mixing with this vegetable fibre paper pulp raw material and mixes into even vegetable fibre paper pulp slurry;
(c) auxiliary agent and the resulting vegetable fibre paper pulp of step (b) slurry that this is contained nonionic cmpd and cationic compound prescription inserted in the slurry storage tank and is mixed into mixed slurry;
(d) it is molded this mixed slurry to be carried out hot pressed paper with a paper make-up machine.
11. the method for production plant fiber food packaging material capable of tolerating high-temperature baking as claimed in claim 10 is characterized in that, step (d) more is included in the step that the packing after molded of this hot pressed paper in this carry out the mold release coating afterwards.
12. the method for production plant fiber food packaging material capable of tolerating high-temperature baking as claimed in claim 11 is characterized in that, it more comprises the withering step of packing behind this coating mold release.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410000529XA CN100475657C (en) | 2004-01-12 | 2004-01-12 | Plant fiber food packaging material capable of tolerating high-temperature baking and producing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410000529XA CN100475657C (en) | 2004-01-12 | 2004-01-12 | Plant fiber food packaging material capable of tolerating high-temperature baking and producing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1640780A CN1640780A (en) | 2005-07-20 |
| CN100475657C true CN100475657C (en) | 2009-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410000529XA Expired - Fee Related CN100475657C (en) | 2004-01-12 | 2004-01-12 | Plant fiber food packaging material capable of tolerating high-temperature baking and producing method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106400602B (en) * | 2016-10-12 | 2019-03-26 | 福建希源纸业有限公司 | A kind of cake tray paper and preparation method thereof |
| CN111501403A (en) * | 2020-05-21 | 2020-08-07 | 安徽顺彤包装材料有限公司 | High-temperature-resistant food packaging material and preparation method thereof |
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Granted publication date: 20090408 Termination date: 20110112 |