CN105603814A - Method for producing environment-friendly paper cup paper - Google Patents

Method for producing environment-friendly paper cup paper Download PDF

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Publication number
CN105603814A
CN105603814A CN201510988529.3A CN201510988529A CN105603814A CN 105603814 A CN105603814 A CN 105603814A CN 201510988529 A CN201510988529 A CN 201510988529A CN 105603814 A CN105603814 A CN 105603814A
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CN
China
Prior art keywords
paper
cup
environment
polyvinyl alcohol
production method
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510988529.3A
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Chinese (zh)
Inventor
杜艳芬
刘金刚
王加福
苏艳群
王比松
李洪才
胡云
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China National Pulp and Paper Research Institute
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China National Pulp and Paper Research Institute
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Publication date
Application filed by China National Pulp and Paper Research Institute filed Critical China National Pulp and Paper Research Institute
Priority to CN201510988529.3A priority Critical patent/CN105603814A/en
Publication of CN105603814A publication Critical patent/CN105603814A/en
Pending legal-status Critical Current

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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
    • D21H19/00—Coated paper; Coating material
    • D21H19/80—Paper comprising more than one coating
    • D21H19/82—Paper comprising more than one coating superposed
    • D21H19/824—Paper comprising more than one coating superposed two superposed coatings, both being non-pigmented
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/12—Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12

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  • Paper (AREA)

Abstract

The invention relates to the technical field of paper making, in particular to a method for producing environment-friendly paper cup paper. A layer of polyvinyl alcohol solution is applied to the surface of base paper of a paper cup, and a layer of polymer emulsion is applied after the polyvinyl alcohol solution is dry. The Cobb test 30 min water absorption value of the paper cup paper produced with the method is smaller than 1.0 g/m<2>, the TAPPI UM 557 method oil resistance level is 12, the paper cup can be recovered by pulping and paper mills after wasted, the pulp residue rate is lower than 0.2% after hydraulic pulping, pulp grinding and defibering treatment, and other parts can be used for manufacturing paper and paper boards. The method not only can guarantee water-proof and oil-proof functions of the paper cup, but also facilitates efficient recovery for the pulping and paper mills, so that the paper cup paper is environment-friendly, and good economic benefits and environmental benefits are achieved.

Description

A kind of production method of environment-protecting paper cup paper
Technical field
The invention belongs to pulping and paper-making field, relate in particular to a kind of production method of environment-protecting paper cup paper.
Background technology
Cup paper is made up of at one or more layers polyethylene (PE) film on the inside and outside surface of body paper body paper and film conventionally. Cup paper have waterproof ooze,Print that attractive in appearance, quality is light, processing and the advantage such as easy to use, can be used for making hold water, tea, coffee, fruit juice, beverage, milk, soya-bean milk,The dixie cup of the multiple beverages such as congee, liquid food is widely used in the modern life.
The processing technology of polyethylene film be with extruder by polyethylene particles after high temperature hot melt through extruding, be then coated on body paper, through coldSuppress. The temperature that PE hot melt needs is 300 DEG C of left and right, and energy consumption is high, production cost is large. Body paper is interweaved and is formed by stringThree-dimensional net structure material, owing to there are a large amount of holes in the water imbibition of string and paper structure, film must arrive a certain amount of, guaranteeWhen use, can not produce break. Film weight is larger, and the poly amount needing is more, and the weight of general one side film is 15g/m2～25g/m2。
Because PE film viscosity is higher, be combined closely with body paper matrix, and in film process, a part can penetrate in the network hole of paper, causesPaper substrate and PE film separation difficulty, therefore, after common dixie cup is discarded, in body paper, fiber is difficult to obtain high efficiente callback utilization. And PE film is at natureUnder environmental condition, can not degrade, if arbitrarily abandon, accumulate over a long period, can bring serious threat to ecological environment; If adopt the processing of burning mode, canDischarge a large amount of noxious materials, harm humans and other animals healthy. Therefore there is very large skill in common cup paper, in the time that efficient, environmental protection are reclaimedArt difficulty, if dealt with improperly, both can cause the waste of a large amount of valuable string resources, can bring white elephant to environmental protection again.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of production method of environment-protecting paper cup paper, the cup paper that uses the method to produceCan be recycled by pulp and paper making, through hydraulic pulping, defibrination, discongest after processing, the ratio of the bad screenings of being discharged by system is lower than 0.2%,Remainder can be used for manufacturing paper with pulp of paper and cardboard.
The technical solution adopted in the present invention is:
(1) apply polyvinyl alcohol
First, at cupstock surface application layer of polyethylene alcoholic solution, after being dried, obtain polyvinyl alcohol film layer. The degree of polymerization of polyvinyl alcohol used is1700～2200, alcoholysis degree is 88%～99%. Be dissolved in water, make solid content and be 5.0%～12.0% poly-vinyl alcohol solution. With gauge stick,Film shifts or this solution is coated in body paper surface by the method for press surface applying glue, is then dried the dry temperature adopting with hot blast or infrared rayDegree is 100 DEG C～200 DEG C, and be 15s～300s drying time, and after being dried, that thin layer is quantitatively 0.5～3.0g/m2。
(2) applying polymer emulsion
On dried polyvinyl alcohol film layer, apply one layer of polymeric emulsion. This emulsion is that solid content is 25.0%～55.0% polyacrylic breastLiquid, a kind of production method is: water, emulsifying agent are joined in reactor, add ammonium persulfate initiator while being heated to 90 DEG C, slowly add reactionMonomer ethyl acrylate, butyl acrylate etc., make buffer with triethanolamine, and insulation reaction 30min, is then cooled to 60 DEG C naturally, adds ammoniacal liquorRegulate pH to neutral. Shift or this emulsion is coated in polyvinyl alcohol film surface by the mode of press coating with gauge stick, film, then with hot blast orDrying cylinder is dried, and the baking temperature adopting is 50 DEG C～150 DEG C, drying time 30s～300s, dry after this layer be quantitatively 0.6～5.0g/m2；
By the cup paper of coating polyethylene alcoholic solution and polyacrylate emulsion with conventional method press polish, curling after, obtain environment protecting paper of the present inventionCup paper.
Compared with the technology of body paper surface film polyethylene production cup paper, the present invention has significant beneficial effect: use the method to produce with existingCup paper can be utilized by pulp and paper making high efficiente callback, through conventional hydraulic pulping, defibrination, discongest after processing, screenings rate is lower than 0.2%, itsRemaining good slurry be partly used for manufacturing paper with pulp paper and cardboard; This cup paper has good waterproof and grease proofing permeance property simultaneously, to water, tea, coffee, fruit juice,Beverage, milk, soya-bean milk, congee, cake, bread etc. multiple moisture, all can effectively prevent infiltration containing fat beverage and food; Meanwhile, paper mill can be in order toProcess with existing top sizing equipment, without adding special melting, extrusion equipment, saved expensive equipment investment, also without very highEnergy consumption, therefore economic benefit is fine.
Detailed description of the invention
Below in conjunction with embodiment and test data, the present invention above-mentioned technical characterictic and advantage with other are described in more detail, but not to implementExample is limited.
Embodiment 1
Taking the degree of polymerization as 1700, alcoholysis degree is as 99% polyvinyl alcohol does primary coat, and polyvinyl alcohol is slowly joined in the water stirring, be warming up toAfter 95 DEG C, be incubated 55min, obtain solid content and be 7.8% poly-vinyl alcohol solution; This solution is applied in cupstock in the mode of press coating,Heated-air drying 120s, baking temperature is 105 DEG C, coating is quantitatively 1.1g/m2. On this polyvinyl alcohol film layer, apply solid content and be 29.2% poly-Acrylic emulsion, manner of application is that film shifts, and adopts drying cylinder to be dried, 105 DEG C of baking temperatures, drying time 120s, dry after the determining of this layerAmount is 4.3g/m2. After twice have applied, through one soft calendaring, obtain cup paper product.
The Specifications of this cup paper is: suddenly method 30min hygroscopicity value: 0.61g/m2; Hercules method degree of sizing, 10min light reflectivityDrop-out value is 0.71%; It is 12 grades that TAPPIUM557 method is surveyed anti-wet goods level.
By this cup paper through hydraulic pulping, defibrination, discongest after, the slag slurry rate during by pressurized screen, scummer is 0.18%.
Embodiment 2
Taking the degree of polymerization as 1700, alcoholysis degree is as 88% polyvinyl alcohol does primary coat, and polyvinyl alcohol is slowly joined in the water under stirring, keepStir 60min, obtain solid content and be 11.5% poly-vinyl alcohol solution; This solution is applied in cupstock to heat in the mode of gauge stick applying glueAir-dry dry 260s, baking temperature is 75 DEG C, coating is quantitatively 2.2g/m2. On this polyvinyl alcohol film layer, apply solid content and be 35.0% polyphenylEthylene acrylic emulsion, manner of application is that film shifts, adopt hot blast to be dried, 60 DEG C of baking temperatures, drying time 230s, dry after this layerBe quantitatively 2.1g/m2. After twice have applied, through one press polish, obtain cup paper product.
The Specifications of this cup paper is: suddenly method 30min hygroscopicity value: 0.85g/m2; Hercules method degree of sizing, 10min light reflectivityDrop-out value is 0.93%; The anti-wet goods level of TAPPIUM557 method is 12 grades.
By this cup paper through hydraulic pulping, defibrination, discongest after, the slag slurry rate during by pressurized screen, scummer is 0.11%.
Embodiment 3
The polyvinyl alcohol that the appropriate degree of polymerization is 2200, alcoholysis degree is 99% is slowly joined in the water under stirring, be warming up to 95 DEG C after insulation90min, obtains solid content and is 5.5% poly-vinyl alcohol solution; This solution is applied in cupstock in the mode of gauge stick applying glue, and infrared ray is dryDry 30s, baking temperature is 170 DEG C, coating is quantitatively 0.8g/m2. On this polyvinyl alcohol film layer, apply solid content and be 49.5% polyacrylic acidEster emulsion, manner of application is gauge stick, adopts cylinder dried, 85 DEG C of baking temperatures, drying time 90s, dry after this layer be quantitatively 1.5g/m2。After twice have applied, through one press polish, obtain cup paper product.
The Specifications of this cup paper is: suddenly method 30min hygroscopicity value: 0.58g/m2; Hercules method degree of sizing, 10min light reflectivityDrop-out value is 0.76%; The anti-wet goods level of TAPPIUM557 method is 12 grades.
By this cup paper through hydraulic pulping, pull an oar, discongest after, the slag slurry rate during by pressurized screen, scummer is 0.05%.
Embodiment 4
The polyvinyl alcohol that the appropriate degree of polymerization is 2000, alcoholysis degree is 88% is slowly joined in the water under stirring, be warming up to 55 DEG C after insulation80min, obtains solid content and is 8.5% poly-vinyl alcohol solution; This solution is applied in cupstock to heated-air drying in the mode of gauge stick applying glue160s, baking temperature is 120 DEG C, coating is quantitatively 2.9g/m2. The polyacrylate emulsion that is 50.5% by solid content is diluted to 25.0%, with meteringRod is applied on this polyvinyl alcohol film layer, adopts heated-air drying, 135 DEG C of baking temperatures, drying time 30s, dry after this layer is quantitatively0.8g/m2. After twice have applied, through one press polish, obtain cup paper product.
The Specifications of this cup paper is: suddenly method 30min hygroscopicity value: 0.79g/m2; Hercules method degree of sizing, 10min light reflectivityDrop-out value is 0.77%; TAPPIUM557 method, anti-wet goods level is 12 grades.
By this cup paper through hydraulic pulping, pull an oar, discongest after, the slag slurry rate during by pressurized screen, scummer is 0.02%.

Claims (6)

1. a production method for environment-protecting paper cup paper, is characterized in that:
1) at cupstock surface application layer of polyethylene alcoholic solution, dry 15s～300s at 100 DEG C～200 DEG C temperature, polyvinyl alcohol film layerBe quantitatively 0.5～3.0g/m2
2) on dried polyvinyl alcohol film layer, apply one layer of polymeric emulsion, dry 30s～300s at 50 DEG C～150 DEG C temperature, this emulsionLayer be quantitatively 0.6～5.0g/m2；
3) cup paper of being produced by the method can be recycled by pulp and paper making, through hydraulic pulping, defibrination, discongest after processing screenings rateLower than 0.2%, remainder can be used for manufacturing paper with pulp of paper and cardboard.
2. the production method of a kind of environment-protecting paper cup paper as claimed in claim 1, is characterized in that: the degree of polymerization of polyvinyl alcohol used is 1700～2200,Alcoholysis degree is 88%～99%.
3. the production method of a kind of environment-protecting paper cup paper as claimed in claim 1, is characterized in that: emulsion used is polyacrylic emulsion.
4. the production method of a kind of environment-protecting paper cup paper as claimed in claim 1, is characterized in that: the cup paper of being produced by the method, suddenly method 30minHygroscopicity value < 1.0g/m2.
5. the production method of a kind of environment-protecting paper cup paper as claimed in claim 1, is characterized in that: the cup paper of being produced by the method, Hercules methodSurvey degree of sizing, light reflectivity drop-out value < 1% when 10min.
6. the production method of a kind of environment-protecting paper cup paper as claimed in claim 1, is characterized in that: the cup paper of being produced by the method, TAPPIUM557Method is surveyed anti-wet goods level and is reached 12 grades.
CN201510988529.3A 2015-12-25 2015-12-25 Method for producing environment-friendly paper cup paper Pending CN105603814A (en)

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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108824071A (en) * 2018-06-06 2018-11-16 安徽永豪日用品有限公司 A kind of preparation method of bamboo fibre dixie cup
CN110747699A (en) * 2019-10-28 2020-02-04 亚太森博（山东）浆纸有限公司 Food packaging paper and preparation method thereof
CN110952380A (en) * 2019-12-18 2020-04-03 镇江大东纸业有限公司 Production method of plastic-free paper cup paper
CN111379189A (en) * 2018-12-29 2020-07-07 上海紫丹食品包装印刷有限公司 Easily-pulped die-cutting high-barrier food coating paperboard and preparation method thereof
CN111576090A (en) * 2020-05-14 2020-08-25 武汉鑫永安纸塑有限公司 Degradable paper cup and preparation method thereof

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JPH10298897A (en) * 1997-04-25 1998-11-10 Unitika Chem Co Ltd Coating agent for paper
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CN101786522A (en) * 2009-12-24 2010-07-28 王福刚 Environment-friendly paper film food package and manufacturing technology thereof

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JPH10298897A (en) * 1997-04-25 1998-11-10 Unitika Chem Co Ltd Coating agent for paper
CN2457074Y (en) * 2000-12-18 2001-10-31 平湖市比例包装材料有限公司 Composite film for packaging food
CN1839186A (en) * 2003-08-22 2006-09-27 塞拉尼斯国际公司 Improved PVOH barrier performance on substrates
CN101786522A (en) * 2009-12-24 2010-07-28 王福刚 Environment-friendly paper film food package and manufacturing technology thereof

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Title
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108824071A (en) * 2018-06-06 2018-11-16 安徽永豪日用品有限公司 A kind of preparation method of bamboo fibre dixie cup
CN111379189A (en) * 2018-12-29 2020-07-07 上海紫丹食品包装印刷有限公司 Easily-pulped die-cutting high-barrier food coating paperboard and preparation method thereof
CN111379189B (en) * 2018-12-29 2022-05-31 上海紫丹食品包装印刷有限公司 Easily-pulped die-cutting high-barrier food coating paperboard and preparation method thereof
CN110747699A (en) * 2019-10-28 2020-02-04 亚太森博（山东）浆纸有限公司 Food packaging paper and preparation method thereof
CN110952380A (en) * 2019-12-18 2020-04-03 镇江大东纸业有限公司 Production method of plastic-free paper cup paper
CN110952380B (en) * 2019-12-18 2023-12-26 镇江大东纸业有限公司 Production method of plastic-free paper cup paper
CN111576090A (en) * 2020-05-14 2020-08-25 武汉鑫永安纸塑有限公司 Degradable paper cup and preparation method thereof

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