CN106436475A - Food wrapping paper and production method thereof - Google Patents
Food wrapping paper and production method thereof Download PDFInfo
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- CN106436475A CN106436475A CN201610888737.0A CN201610888737A CN106436475A CN 106436475 A CN106436475 A CN 106436475A CN 201610888737 A CN201610888737 A CN 201610888737A CN 106436475 A CN106436475 A CN 106436475A
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Classifications
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- 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
- 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
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Pest Control & Pesticides (AREA)
- Paper (AREA)
Abstract
The invention relates to the field of food exterior package, in particular to food wrapping paper and a production method thereof. The production method comprises the steps of preparing softwood pulp, hardwood pulp and bamboo pulp according to a certain proportion, respectively pulping the softwood pulp, the hardwood pulp and the bamboo pulp and then mixing; adding a fluorine type oil-resistant agent and a novel chitin bactericide into the mixed pulp according to a certain proportion; adding a mineral oil type stripping gloss enhancer in a spraying way; manufacturing paper with the pulp by using a paper-making machine, and then using a controllable medium-high calecder roll to calendar the paper to produce the high gloss antibacterial food wrapping paper. Therefore, after the production method is adopted, the glossiness, oil resistance and antibacterial property of the food wrapping paper are greatly improved.
Description
Technical field
The present invention relates to food casing field, particularly to a kind of food wrapper and production method thereof.
Background technology
This " green package " mode of papery packaging for foodstuff just becomes nondegradable packaged form with its feature of environmental protection
Good substitute is more and more obvious in the advantage of food packaging applications.Complying with this trend, domestic and international market progressively prohibits the use of
Plastic food packing, compared with plastic food packing, multiple advantages of papery packaging for foodstuff are mainly reflected in：Good health and
Extensive, the degradable and recoverable of raw material sources, there is good affinity interaction to water soluble glue and water color ink and
The feature of environmental protection etc. having.Food wrapper is for meeting packaging and processing request, and not only there are preferable glossiness, Er Qieyao in surface
Seek the good performance such as antibacterial and grease proofing.Current domestic manufacturer mainly produces food paper by whole wood pulp, not only produces into
This height, and paper antibiotic property and oil preventing performance difference often occur, the problems such as sheet gloss is not enough.Therefore high in the market
The food paper that glossiness, antibiotic property are good, grease proofness is good relies primarily on import.
Content of the invention
The technical problem to be solved is：A kind of food wrapper and production method thereof are provided, solve existing state
Produce wrapping paper antibiotic property and oil preventing performance difference, the not enough problem of sheet gloss.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is：
The production method of a kind of food wrapper, comprises the following steps：
Step 1：Respectively softwood pulp, hardwood pulp and bamboo pulp are pulled an oar, slurry temperature during making beating is controlled
38-45℃；The beating consistency of described softwood pulp:4.0%, beating degree is 65-70 degree；The beating consistency of described hardwood pulp is
4.0%, beating degree is 50-55 degree；The beating consistency of described bamboo pulp is 4.5%, beating degree 60-65 degree；
Step 2：By the 20-25 part softwood pulp through pulling an oar, 65-70 part hardwood pulp and 10-15 part bamboo pulp in mixing
Groove mixes, obtains mixed slurry；
Step 3：Add 0.3-0.35% fluorine based food level oil-proofing agent JY-P01 in mixing channel, fill in mixing channel
Divide mixing；
Step 4：After mixed slurry mixes with fluorine based food level oil-proofing agent JY-P01, add in mixing channel
0.015-0.02% chitin bactericide Busan888；
Step 5：After mixed slurry mixes with chitin bactericide Busan888, mixing channel adds 0.1-
0.15% mineral oil type peels off optical brightener XDHG-01；
Step 6：After mixed slurry and mineral oil type stripping optical brightener XDHG-01 mix, manufacture paper with pulp through paper machine
Rear press polish generates food wrapper.
The beneficial effects of the present invention is：The present invention relates to the production method of a kind of food wrapper, certain by preparation
The softwood pulp of proportioning, hardwood pulp, bamboo pulp material, and mixing after pulling an oar respectively, add a certain proportion of in mixing slurry simultaneously
Fluorine class oil-proofing agent, novel chitin bactericide, use spray mode, add mineral oil type and peel off optical brightener, copy through paper machine
High gloss antibacterial food wrapping paper is generated through crown control felt wrapped roll press polish again after making.By the way, the present invention is significantly
Add glossiness, oil preventing performance and the anti-microbial property of food wrapper.
Detailed description of the invention
It by describing the technology contents of the present invention in detail, being realized purpose and effect, is explained below in conjunction with embodiment.
The design of most critical of the present invention is：The present invention relates to the production method of a kind of food wrapper, by preparation one
Determine the softwood pulp of proportioning, hardwood pulp, bamboo pulp material, and mixing after pulling an oar respectively, in mixing slurry, add certain proportion simultaneously
Fluorine class oil-proofing agent, novel chitin bactericide.
The present invention provides the production method of a kind of food wrapper, comprises the following steps：
Step 1：Respectively softwood pulp, hardwood pulp and bamboo pulp are pulled an oar, slurry temperature during making beating is controlled
38-45℃；The beating consistency of described softwood pulp:4.0%, beating degree is 65-70 degree；The beating consistency of described hardwood pulp is
4.0%, beating degree is 50-55 degree；The beating consistency of described bamboo pulp is 4.5%, beating degree 60-65 degree；
Step 2：By the 20-25 part softwood pulp through pulling an oar, 65-70 part hardwood pulp and 10-15 part bamboo pulp in mixing
Groove mixes, obtains mixed slurry；
Step 3：Add 0.3-0.35% fluorine based food level oil-proofing agent JY-P01 in mixing channel, fill in mixing channel
Divide mixing；
Step 4：After mixed slurry mixes with fluorine based food level oil-proofing agent JY-P01, add in mixing channel
0.015-0.02% chitin bactericide Busan888；
Step 5：After mixed slurry mixes with chitin bactericide Busan888, mixing channel adds 0.1-
0.15% mineral oil type peels off optical brightener XDHG-01；
Step 6：After mixed slurry and mineral oil type stripping optical brightener XDHG-01 mix, manufacture paper with pulp through paper machine
Rear press polish generates food wrapper.
In the production method of above-mentioned food wrapper, by preparing the softwood pulp of certain proportioning, hardwood pulp, bamboo pulp
Material, and mixing after pulling an oar respectively, add a certain proportion of fluorine class oil-proofing agent in mixing slurry simultaneously, novel chitin bactericide,
Use spray mode, add mineral oil type and peel off optical brightener, raw through crown control felt wrapped roll press polish again after paper machine is manufactured paper with pulp
Become high gloss antibacterial food wrapping paper.
Fluorine based food level oil-proofing agent JY-P01 is a kind of water miscible weak cation type fluorinated acrylate polymer, effect
When paper, first adsorb at fiber surface, carry out several seconds short time to a few minutes in proper temperature and be dried.In dry run
In, as moisture evaporation and temperature raise, emulsion film forming, fluorocarbon group outwards arranges at paper surface, is formed vertically closely
Network structure, thus there is low surface tension and make grease etc. be difficult to soak.Fluorinated acrylate oil-proofing agent consumption is few, cost
Low, effect is obvious, and flexibly, retention is high in application, and paper recyclable again with or biodegradable in nature, thus significantly drop
The low harm causing environment, has good using effect and positive meaning；
The interpolation of chitin bactericide Busan888 can solve the microorganism problem on obstacle in paper machine white water, suppresses streaming system
The formation of system corruption slurry, it is ensured that the normal of paper machine produces and paper quality, reduces the stop cleaning number of times of paper machine, extends paper machine brush
Wash periodically；
Mineral oil type is peeled off optical brightener XDHG-01 and is easily emulsified in cold water, can reduce dryer surface and scraper
Abrasion and then raising production efficiency, the stripping performance having, can reduce the generation of paper powder.
By the way, present invention dramatically increases glossiness, oil preventing performance and the anti-microbial property of food wrapper.
Further, in described step 1, when pulling an oar bamboo pulp or softwood pulp, compound fibre is added in the slurry
Dimension plain making beating enzyme RH-2, it is 4800u/g that the enzyme of described compound cellulose making beating enzyme RH-2 is lived, described compound cellulose making beating enzyme
The consumption of RH-2 is the 0.001-0.0015% being equivalent to slurry.
Seen from the above description, in the slurry of bamboo pulp or softwood pulp, add compound cellulose making beating enzyme RH-2, make wood
Slurry or the quick wire-dividing broom purification of fibrocyte outer wall of bamboo pulp, can not only save beating time, and improve the resistance to broken strong of paper
Degree.
Further, the addition manner that described step 5 mineral oil in fluid type peels off optical brightener XDHG-01 is mineral oil type
Peel off optical brightener XDHG-01 to add after dilution with water, above mixing channel, install a shower additional, use spray mode to add
Mineral oil type peels off optical brightener XDHG-01.
Above-mentioned steps improves stripping optical brightener XDHG-01 stripping performance further, reduces the generation of paper powder further.
Further, described shower with the horizontal 45 degree of angles, the shower nozzle of described shower with the distance of mixing channel is
12cm.
The improvement of above-mentioned shower makes stripping optical brightener XDHG-01 uniformly be sprayed in mixing channel, improves further and peels off
Optical brightener XDHG-01 stripping performance, reduces the generation of paper powder further.
Further, the press polish in described step 6 is to use crown control roll calendar machine to carry out, and increases by two logical steamings simultaneously
Vapour deflector roll, control felt wrapped roll temperature is 92-95 DEG C, press polish line pressure 0.25-0.3Mpa, press polish speed 280-300m/min, pressure
After light, Paper Moisture is 7.0-8.0%.
In above-mentioned steps being optimized rolling condition, making paper have higher smoothness, glossiness, tightness is big simultaneously
Big raising, reduces the infiltration of oil.
Embodiment 1
The production method of a kind of food wrapper, comprises the following steps：
Step 1：Respectively softwood pulp, hardwood pulp and bamboo pulp are pulled an oar, slurry temperature during making beating is controlled
38-45℃；The beating consistency of described softwood pulp:4.0%, beating degree is 65-70 degree；The beating consistency of described hardwood pulp is
4.0%, beating degree is 50-55 degree；The beating consistency of described bamboo pulp is 4.5%, beating degree 60-65 degree；To bamboo pulp or needle
When wood pulp is pulled an oar, add compound cellulose making beating enzyme RH-2, the enzyme of described compound cellulose making beating enzyme RH-2 in the slurry
Living is 4800u/g, and the consumption of described compound cellulose making beating enzyme RH-2 is the 0.001-0.0015% being equivalent to slurry；
Step 2：By the 20-25 part softwood pulp through pulling an oar, 65-70 part hardwood pulp and 10-15 part bamboo pulp in mixing
Groove mixes, obtains mixed slurry；
Step 3：Add 0.3-0.35% fluorine based food level oil-proofing agent JY-P01 in mixing channel, fill in mixing channel
Divide mixing；
Step 4：After mixed slurry mixes with fluorine based food level oil-proofing agent JY-P01, add in mixing channel
0.015-0.02% chitin bactericide Busan888；
Step 5：After mixed slurry mixes with chitin bactericide Busan888, mixing channel adds 0.1-
0.15% mineral oil type peels off optical brightener XDHG-01；The addition manner that described mineral oil type peels off optical brightener XDHG-01 is
Mineral oil type is peeled off optical brightener XDHG-01 and is added after dilution with water, installs a shower above mixing channel additional, uses spray
Pouring mode is added mineral oil type and is peeled off optical brightener XDHG-01；Described shower with the horizontal 45 degree of angles, described shower
Shower nozzle is 12cm with the distance of mixing channel；
Step 6：After mixed slurry and mineral oil type stripping optical brightener XDHG-01 mix, manufacture paper with pulp through paper machine
Rear press polish generates food wrapper；Described press polish is to use crown control roll calendar machine to carry out, and increases by two logical steam simultaneously and leads
Roller, control felt wrapped roll temperature is 92-95 DEG C, press polish line pressure 0.25-0.3Mpa, press polish speed 280-300m/min, after press polish
Paper Moisture is 7.0-8.0%.
Table 1 is softwood pulp, the wet end furnish of hardwood pulp and bamboo pulp to the grease proofness of food wrapper, pop strength with
And the impact of glossiness；
As seen from Table 1, the optimal wet end furnish that prepared by the present invention be softwood pulp 20-25 part, hardwood pulp 65-70 part,
Bamboo pulp 10-15 part.
Table 1
Beating consistency that table 2 is softwood pulp and bamboo pulp, beating degree, weight in wet base situation record sheet；
As seen from Table 2, require during making beating that softwood pulp, hardwood pulp and bamboo pulp use and separate making beating mode, through contrast
Test, determines suitable beating consistency, beating degree and weight in wet base.
Table 2
| Type of stock | Beating consistency/% | Beating degree/° SR | Weight in wet base/g |
| Softwood pulp | 4.0 | 65～70 | 7.5.0～8.5 |
| Hardwood pulp | 4.0 | 50～55 | 3.0～3.5 |
| Bamboo pulp | 4.5 | 60～65 | 5.0～6.0 |
The quality measurements of the food wrapper that the production method that table 3 is above-mentioned food wrapper prepares；
As seen from Table 3, the quality measurements of the food wrapper that the production method of above-mentioned food wrapper prepares all accords with
Close national standard.
Table 3
In sum, in the production method of the food wrapper that the present invention provides, by preparing the needlebush of certain proportioning
Slurry, hardwood pulp, bamboo pulp material, and mixing after pulling an oar respectively, simultaneously add a certain proportion of fluorine class oil-proofing agent, newly in mixing slurry
Type chitin bactericide, uses spray mode, adds mineral oil type and peels off optical brightener, again through in controlled after paper machine is manufactured paper with pulp
High felt wrapped roll press polish generates high gloss antibacterial food wrapping paper.
Fluorine based food level oil-proofing agent JY-P01 is a kind of water miscible weak cation type fluorinated acrylate polymer, effect
When paper, first adsorb at fiber surface, carry out several seconds short time to a few minutes in proper temperature and be dried.In dry run
In, as moisture evaporation and temperature raise, emulsion film forming, fluorocarbon group outwards arranges at paper surface, is formed vertically closely
Network structure, thus there is low surface tension and make grease etc. be difficult to soak.Fluorinated acrylate oil-proofing agent consumption is few, cost
Low, effect is obvious, and flexibly, retention is high in application, and paper recyclable again with or biodegradable in nature, thus significantly drop
The low harm causing environment, has good using effect and positive meaning；
The interpolation of chitin bactericide Busan888 can solve the microorganism problem on obstacle in paper machine white water, suppresses streaming system
The formation of system corruption slurry, it is ensured that the normal of paper machine produces and paper quality, reduces the stop cleaning number of times of paper machine, extends paper machine brush
Wash periodically；
Mineral oil type is peeled off optical brightener XDHG-01 and is easily emulsified in cold water, can reduce dryer surface and scraper
Abrasion and then raising production efficiency, the stripping performance having, can reduce the generation of paper powder.
By the way, present invention dramatically increases glossiness, oil preventing performance and the anti-microbial property of food wrapper.
When pulling an oar bamboo pulp or softwood pulp, add compound cellulose making beating enzyme RH-2 in the slurry, described multiple
It is 4800u/g that the enzyme of condensating fiber element making beating enzyme RH-2 is lived, and the consumption of described compound cellulose making beating enzyme RH-2 is for being equivalent to slurry
0.001-0.0015%.
Add compound cellulose making beating enzyme RH-2 in the slurry of bamboo pulp or softwood pulp, make the fiber finer of wood pulp or bamboo pulp
The quick wire-dividing broom purification of extracellular wall, can not only save beating time, and improve the pop strength of paper.
Mineral oil type peel off optical brightener XDHG-01 addition manner be mineral oil type peel off optical brightener XDHG-01 with
Water adds after dilution, installs a shower above mixing channel additional, uses spray mode to add the stripping of mineral oil type and adds lustre to
Agent XDHG-01.
Above-mentioned steps improves stripping optical brightener XDHG-01 stripping performance further, reduces the generation of paper powder further.
Described shower is with the horizontal 45 degree of angles, and the shower nozzle of described shower and the distance of mixing channel are 12cm.
The improvement of above-mentioned shower makes stripping optical brightener XDHG-01 uniformly be sprayed in mixing channel, improves further and peels off
Optical brightener XDHG-01 stripping performance, reduces the generation of paper powder further.
Press polish is to use crown control roll calendar machine to carry out, and increases by two logical steam deflector rolls simultaneously, controls felt wrapped roll temperature
For 92-95 DEG C, press polish line pressure 0.25-0.3Mpa, press polish speed 280-300m/min, Paper Moisture is 7.0-after press polish
8.0%.
In above-mentioned steps being optimized rolling condition, making paper have higher smoothness, glossiness, tightness is big simultaneously
Big raising, reduces the infiltration of oil.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every utilize this
The equivalents that bright description is made, or it is directly or indirectly used in related technical field, all in like manner include at this
In bright scope of patent protection.
Claims (6)
1. the production method of a food wrapper, it is characterised in that comprise the following steps：
Step 1：Respectively softwood pulp, hardwood pulp and bamboo pulp are pulled an oar, control slurry temperature during making beating at 38-45
℃；The beating consistency of described softwood pulp：4.0%, beating degree is 65-70 degree；The beating consistency of described hardwood pulp is
4.0%, beating degree is 50-55 degree；The beating consistency of described bamboo pulp is 4.5%, beating degree 60-65 degree；
Step 2：By the 20-25 part softwood pulp through pulling an oar, 65-70 part hardwood pulp and 10-15 part bamboo pulp in mixing channel
Mixing, obtains mixed slurry；
Step 3：Add 0.3-0.35% fluorine based food level oil-proofing agent in mixing channel, be sufficiently mixed in mixing channel；
Step 4：After mixed slurry mixes with fluorine based food level oil-proofing agent, mixing channel adds 0.015-0.02% first
Shell fungicide；
Step 5：After mixed slurry mixes with chitin bactericide, mixing channel adds 0.1-0.15% mineral oils
Optical brightener peeled off by type；
Step 6：After mixed slurry and mineral oil type stripping optical brightener mix, press polish after paper machine is manufactured paper with pulp generates food
Product wrapping paper.
2. the production method of food wrapper according to claim 1, it is characterised in that in described step 1, to bamboo pulp
Or softwood pulp is when pulling an oar, adding compound cellulose making beating enzyme in the slurry, the enzyme of described compound cellulose making beating enzyme is lived
For 4800u/g, the consumption of described compound cellulose making beating enzyme is the 0.001-0.0015% being equivalent to slurry.
3. the production method of food wrapper according to claim 1, it is characterised in that described step 5 Minerals oils
The addition manner that optical brightener peeled off by type is that mineral oil type stripping optical brightener adds after dilution with water, installs additional above mixing channel
A piece shower, uses spray mode to add mineral oil type and peels off optical brightener.
4. the production method of food wrapper according to claim 3, it is characterised in that described shower with the horizontal
45 degree of angles, the shower nozzle of described shower and the distance of mixing channel are 12cm.
5. the production method of food wrapper according to claim 1, it is characterised in that the press polish in described step 6 is
Using crown control roll calendar machine to carry out, increasing by two logical steam deflector rolls simultaneously, control felt wrapped roll temperature is 92-95 DEG C, press polish
Line pressure 0.25-0.3Mpa, press polish speed 280-300m/min, Paper Moisture is 7.0-8.0% after press polish.
6. the production method of the food wrapper described in claim 1-5 any one prepares food wrapper.
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| CN201610888737.0A CN106436475A (en) | 2016-10-12 | 2016-10-12 | Food wrapping paper and production method thereof |
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| CN201610888737.0A CN106436475A (en) | 2016-10-12 | 2016-10-12 | Food wrapping paper and production method thereof |
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ID=58174064
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Cited By (15)
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| CN107012743A (en) * | 2017-03-24 | 2017-08-04 | 安徽格义循环经济产业园有限公司 | A kind of wrapping paper and preparation method thereof as made from non-timber class paper pulp |
| CN107034737A (en) * | 2017-05-25 | 2017-08-11 | 句容市兴武包装有限公司 | A kind of method that food wrapper is prepared by matrix of mao bamboon |
| CN107090737A (en) * | 2017-03-24 | 2017-08-25 | 安徽格义循环经济产业园有限公司 | A kind of non-timber class natural color pulp food wrapper and preparation method thereof |
| CN107476119A (en) * | 2017-07-21 | 2017-12-15 | 吉翔宝（太仓）离型材料科技发展有限公司 | A kind of water-based release liners of Environment-friendlywear-resistant wear-resistant containing organic modification montmonrillonite |
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| CN113005806A (en) * | 2021-02-03 | 2021-06-22 | 福建星城纸业有限公司 | High-strength waterproof semitransparent food paper bag body paper and preparation method thereof |
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Inventor after: Yu Shifa Inventor after: Chen Changxing Inventor after: Li Xinping Inventor after: Lin Shufang Inventor after: Chen Fengying Inventor before: Chen Deqiang Inventor before: Yu Shifa Inventor before: Lin Shufang |
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Effective date of registration: 20170524 Address after: 363107 Wu industrial park, corner industrial complex development zone, Longhai, Fujian, Zhangzhou Applicant after: Fujian Xiyuan Paper Industry Co., Ltd. Applicant after: Jinjiang Youlanfa Paper Industry Co., Ltd. Applicant after: Shaanxi University of Science and Technology Address before: 363107 Wu industrial park, corner industrial complex development zone, Longhai, Fujian, Zhangzhou Applicant before: Fujian Xiyuan Paper Industry Co., Ltd. |
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