CN102587193A - Coating newsprint and making method thereof - Google Patents
Coating newsprint and making method thereof Download PDFInfo
- Publication number
- CN102587193A CN102587193A CN2012100609114A CN201210060911A CN102587193A CN 102587193 A CN102587193 A CN 102587193A CN 2012100609114 A CN2012100609114 A CN 2012100609114A CN 201210060911 A CN201210060911 A CN 201210060911A CN 102587193 A CN102587193 A CN 102587193A
- Authority
- CN
- China
- Prior art keywords
- coating
- paper
- newsprint
- pulp
- machine
- Prior art date
- 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
Links
Images
Abstract
The invention provides coating newsprint and a making method thereof. The newsprint has the following specifications: the fixed weight is 45-49g/m<2>, whiteness is 59-63%, transverse tear index is larger than 5.5m N.m<2>/g, opaqueness is larger than 95%, surface strength is larger than 1.0m/s, average smoothness of the front side and the back side is larger than 60S, the smoothness difference of the front side and the back side is less than 20%, and the longitudinal breakage length is larger than 1500m. The making method of the coating newsprint comprises the following steps of: preparing 100% regenerated fiber deinked pulp completely made from No.8 waste paper and adding auxiliary materials including retention aid, dyes and cationic starch to obtain material pulp; distributing pulp by using a headbox, forming at a neat part, carrying out composite squeezing in a four-roller three-pressing region, primary drying, surface mineral pigment coating and finishing, post-drying, reeling by using reeling machine and external re-reeling. The making method is simple, the coat of coating newsprint per ton is reduced by 250-280 yuan; the surface whiteness of the product is greatly improved, the surface of the product is smooth and fine, the ink absorption rate of the product is moderate; the printability is improved; ink consumption during printing can be reduced 10-15wt%; the printed pictures have bright color and clear wire marks; and the made coating newsprint can meet printing requirements of common newspapers and periodicals and high-quality colored newspapers and periodicals.
Description
Technical field
The present invention relates to a kind of coated newsprint paper and manufacturing approach thereof, belong to pulp technology for making paper.
Background technology
Present common newsprint adopts traditional handicraft and pulping method production, uses the certain mechanical pulp production of 100% pulp from decoloured waste paper or pulp from decoloured waste paper adapted.These newsprint ubiquity coloring earth additions are few, and ash content is generally at 10-15%, and the fibrous raw material consumption is big, and ton paper pulp consumption is up to 970-1020kg; Pulp brightness requires high, and conventional newsprint whiteness (ISO) 55-60% is for reaching this whiteness; The deinking pulp brightness is at 54-57%, and cost is higher, and becomes the paper rough surface; The blotting amount is big, and printing word is fuzzy, is not suitable for high-grade newpapers and periodicals printing needs.
Summary of the invention
The objective of the invention is to overcome the deficiency of conventional production method, a kind of coated newsprint paper and manufacturing approach thereof are provided, pass through the sizing applicator device, coloring earth is applied to the surface of newsprint; It is low to produce a kind of pulp material whiteness requirement, and the slurry consumption is low, becomes the paper whiteness high; Surface smoothing is fine and smooth; The newsprint that roughness and printing ink absorption are low had both been realized the purpose that reduces cost, satisfied the printing needs of high-grade colored newpapers and periodicals again.For realizing above-mentioned purpose, technical scheme of the present invention is following:
A kind of coated newsprint paper of the present invention, this paper quantitatively are 45-49g/m
2, whiteness (ISO) 59-63%, laterally tear index is greater than 5.5m N.m
2/ g; Opacity is greater than 95%, and surface strength is greater than 1.0m/s; The positive and negative two sides of smoothness is on average greater than 60S, and smoothness two sides difference is less than 20%; Fracture length is vertically greater than 4500m.
The manufacturing approach of coated newsprint paper of the present invention: comprise the 100% deinking recycled fibers slurry of producing with full 8# waste paper, add retention agent polyacrylamide, dyestuff alkalescence article purple and cationic starch and be mixed with the paper stock slurry, starch through head box cloth; Wet end moulding, four rollers, three nip unipress; Preceding oven dry is dry, and coloring earth coating ornamenting is carried out on the surface, and the back oven dry is dry, reel machine batches; The outer rewinding of machine, technical parameter is following:
(1) deinking pulp brightness 47-50%, freedom 220-280CSF;
(2) online pulp density 0.8wt%-1.0wt%, online slurry pH value 7-8, headbox stock freedom 60-100CSF, machine water pulp density 0.35wt%-0.45wt%, head box cationic demand 200-300uq/l;
(3) coating formulation technology: coating solid content 50wt%-55wt%, dope viscosity 200-600mpa.s, coating pH value 8.5-9.2, coating weight 7-10g/m
2
(4) page goes out to squeeze moisture 50wt%-55wt%, and page advances coating machine moisture 90wt%-95wt%, coating machine moisture 6wt%-9wt% under the page;
(5) soft calendaring pressure 20-70kN/m, temperature 60-90 ℃.
3, the manufacturing approach of the described coated newsprint paper of claim 1 is characterized in that method step is:
1) preparation deinking slurry is with 8
#Waste paper is raw material, after deinking, hydrogen peroxide oxidation bleaching and reducing bleach bleaching, gets the deinking recycled fibers slurry, its deinking pulp brightness 47-50%, deinking slurry proportioning 100%;
2) during the deinking that makes toward step 1) is starched; Adding is made retention agent (PAM) with respect to the polyacrylamide of oven dry stock mass ratio 0.03wt%～0.05wt%; Quaternary ammonium cation starch with respect to oven dry stock mass ratio 0.8wt%-1.0wt%; Oven dry stock per ton adds 30～50g alkalescence article purple and makes dyestuff, is made into pulp material;
3) manufacture paper with pulp, step 2) pulp material that is made into is through head box cloth slurry, wet end moulding, four rollers, three nip unipress; Preceding oven dry is dry; Online pulp density 0.8wt%-1.0wt%, online slurry pH value 7-8, headbox stock freedom 60-100CSF; Machine water pulp density 0.35wt%-0.45wt%, head box cationic demand 200-300uq/l;
4) go out the ornamenting of the dry page surface coated of preceding oven dry, the back oven dry is dry, reel machine batches, the outer rewinding of machine, and the coated newsprint paper that promptly makes,
Wherein, the surface coated material formula is 100 parts of inorganic mineral pigments, is coated with gluing starch 10-12 part, carboxylic styrene butadiene latex 1-2 part; Coating solid content 50wt%-55wt%, viscosity 200-600mpa.s, pH 8.5-9.2, coating weight 7-10g/m
2, go out to squeeze moisture 50wt%-55wt%, advance coating machine moisture 90wt%-95wt%, following coating machine moisture 6wt%-9wt%, soft calendaring pressure 20-70kN/m, 60-90 ℃ of soft press-polishing machine temperature.
The product coated newsprint paper quantitatively is 45-49g/m
2, whiteness 59-63%, laterally tear index is greater than 5.5mN.m2/g; Opacity is greater than 95%, and surface strength is greater than 1.0m/s; The positive and negative two sides of smoothness is on average greater than 60S, and smoothness two sides difference is less than 20%; Fracture length is vertically greater than 4500m.
Major technique advantage of the present invention: (1) conventional newsprint whiteness 55-60%; For reaching this whiteness; The deinking pulp brightness is at 54-57%; Coated newsprint paper requires to reduce to the deinking pulp brightness because of at paper surface coating one deck coloring earth (whiteness 90-92%), and the deinking pulp brightness is reduced to 47-50% just can reach into paper whiteness needs.Only deinking agent, bleaching agent and energy consumption, material consumption cost ton slurry reduce by 130 yuan, and have reduced pollutional load and follow-up water treatment expense.(2) common newsprint adds in slurry because of filler (coloring earth), and addition is low, and ash content is generally at 10-15%, and ton paper pulp consumes 970-1020kg; Coated newsprint paper coloring earth addition is high, and ash content reaches 22-27%, ton paper pulp consumption 850-900kg, and cost descends 150 yuan between the paper locomotive, saves the plant fiber material of a large amount of high prices.(3) the coloring earth blotting amount of surface coated is low, and the ink usage of 10-15% can be saved in the printing house, and the printing ink saturation degree is high, and printed matter gloss is beautiful.The coated newsprint paper manufacturing that the present invention produces is simple, and product specification promotes, and the more common newsprint of cost ton paper reduces 250-280 unit, the product competitiveness raising.
Manufacturing technique of the present invention is simple, and the production run degree improves, and ton paper cost can reduce 250-280 unit.Good product quality, the surperficial whiteness in coating back significantly improves, and roughness reduces; Surface smoothing is fine and smooth, and printing ink absorption is moderate, and printability improves; Can reduce ink usage 10-15% during printing, picture is bright in colour, and wire mark is clear; Third dimension is strong, can satisfy the print request of general press, has more satisfied the printing needs of high-grade colored newpapers and periodicals.
Description of drawings
Fig. 1 is common newsprint structural representation
Fig. 2 is a surface coated newsprint structural representation of the present invention
Fig. 3 is surface coated newsprint printing effect figure
Among Fig. 1-3: 1 is string, and 2 is coloring earth, and 3 is printing ink.
Visible by figure, coloring earth particle particle is little, and is fine and smooth than string, and coating back smoothness improves, and because of coloring earth covers in fiber surface, the blotting amount reduces during printing.Printed matter printing ink saturation degree is high, can save printing ink.
Fig. 4 is common newsprint electromicroscopic photograph
Fig. 5 is a surface coated newsprint electromicroscopic photograph of the present invention
Coating weight 10g/m
2Smoothly fine and smooth because of coloring earth by the visible coating of Fig. 5 back, surperficial thick fiber obviously reduces.
Fig. 6 is common newsprint printing effect electromicroscopic photograph
White portion is that the blotting amount is inhomogeneous, the low formation of printing ink saturation degree among Fig. 6.Show that uncoated newsprint blotting saturation degree is low.
Fig. 7 is a surface coated newsprint printing effect electromicroscopic photograph of the present invention
Coating back blotting is even, and the obvious gloss of printing is beautiful.
The specific embodiment:
Following surperficial coated newsprint paper prepares the process conditions of embodiment, in following process conditions, appoint and get, thereby embodiment is not a limitation of the present invention.Its process conditions are: deinking pulp brightness 47-50%, deinking slurry proportioning 100%; In the deinking slurry; Adding is with respect to the polyacrylamide (PAM) of oven dry stock mass ratio 0.03wt%～0.05wt%; With respect to the quaternary ammonium cation starch of oven dry stock mass ratio 0.8wt%-1.0wt%, add 30～50g dyestuff alkalescence article purple with respect to oven dry stock per ton, be made into pulp material;
The preparation of surface coated newsprint
With 48.5% whiteness deinking slurry, add polyacrylamide (PAM) retention agent 0.35kg/t paper, the purple 40g/t paper of dyestuff alkalescence article, quaternary ammonium cation starch 9kg/t paper; Starch through head box cloth; Wet end moulding, four rollers, three nip unipress, preceding oven dry is dry, the surface coated ornamenting; The back oven dry is dry, reel machine batches, the outer rewinding of machine.Obtain 380 tons of the coated newsprint papers of 781mm and the 1562mm specification of customer requirement.Online pulp density 0.95wt%, pH7.6, head box freedom 70CSF, machine water pulp density 0.42wt%, head box PCD 260uq/l.Coating weight 8g/m
2Surface coated material formula: the mixing that 100 parts in a calcium carbonate of inorganic mineral pigments coating level, 10 parts of gluing starch of coating and synthetic latex (carboxylic styrene butadiene latex) are 1 part; Coating medium solid content 52.3wt%, viscosity 290mpa.s, pH 8.8.Page goes out to squeeze moisture 52.3wt%, advances coating machine uncoated paper moisture 94.7wt%, following machine paper moisture 7.8wt%.Soft calendaring pressure 50kN/m, 85 ℃ of the dry temperature of back oven dry.The coated newsprint paper 48g/m that produces
2, whiteness (ISO) 59.7%, laterally tear index 5.65m N.m
2/ g; Opacity is greater than 96.5%, and surface strength is greater than 1.32m/s; Smoothness positive and negative 55/67.Fracture length is vertically greater than 4620m.
The preparation of surface coated newsprint
With 47.2% whiteness deinking slurry, add polyacrylamide retention agent 0.42kg/t paper, the purple 48g/t paper of dyestuff alkalescence article, quaternary ammonium cation starch 8kg/t paper; Starch through head box cloth; Wet end moulding, four rollers, three nip unipress, preceding oven dry is dry, the surface coated ornamenting; The back oven dry is dry, reel machine batches, the outer rewinding of machine.Obtain 320 tons of the coated newsprint papers of 781mm and the 1562mm specification of customer requirement.Online pulp density 0.83wt%, pH7.8, head box freedom 95CSF, machine water pulp density 0.43wt%, head box PCD 270uq/l.Coating weight 7.8g/m
2Surface coated material formula: the mixing of 100 parts of inorganic mineral pigments, 1.5 parts of coating 11 parts of gluing starch and synthetic latexes (carboxylic styrene butadiene latex).Coating medium solid content 52.7wt%, viscosity 320mpa.s, pH 8.9.Page goes out to squeeze moisture 51.2wt%, advances coating machine uncoated paper moisture 92wt%, following machine paper moisture 6.3wt%.Soft calendaring pressure 30kN/m, 90 ℃ of the dry temperature of back oven dry.The coated newsprint paper 45g/m that produces
2, whiteness (ISO) 60.5%, laterally tear index 5.69m N.m
2/ g; Opacity is greater than 97.0%, and surface strength is greater than 1.45m/s; Smoothness positive and negative 65/69.Fracture length is vertically greater than 4580m.
The preparation of surface coated newsprint
With 49.8% whiteness deinking slurry, add polyacrylamide retention agent 0.32kg/t paper, dyestuff (the alkalescence article are purple) 36g/t paper, quaternary ammonium cation starch 9.5kg/t paper; Starch through head box cloth; Wet end moulding, four rollers, three nip unipress, preceding oven dry is dry, the surface coated ornamenting; The back oven dry is dry, reel machine batches, the outer rewinding of machine.Obtain 650 tons of the coated newsprint papers of 781mm and the 1562mm specification of customer requirement.Online pulp density 0.9wt%, pH7.5, head box freedom 80CSF, machine water pulp density 0.38wt%, head box PCD 220uq/l.Coating weight 9g/m
2, surface coated material formula: the mixing of 100 parts of inorganic mineral pigments, 2 parts of coating 12 parts of gluing starch and synthetic latexes (carboxylic styrene butadiene latex).Coating medium solid content 54.2wt%, viscosity 450mpa.s, pH 8.6.Page goes out to squeeze moisture 54.4wt%, advances coating machine uncoated paper moisture 95%, following machine paper moisture 8.7wt%.Soft calendaring pressure 70kN/m, 60 ℃ of the dry temperature of back oven dry.The coated newsprint paper 48.8g/m that produces
2, whiteness (ISO) 62.8%, laterally tear index 6.03m N.m
2/ g; Opacity is greater than 96.1%, and surface strength is greater than 1.25m/s; Smoothness positive and negative 72/78.Fracture length is vertically greater than 4650m.
The foregoing description prepares surface coated newsprint surface stereoscan photograph such as Fig. 5, and the coating back is smoothly fine and smooth because of coloring earth, and surperficial thick fiber obviously reduces.
Embodiment prepares surface coated newsprint printing effect electromicroscopic photograph such as Fig. 7, and coating back blotting is even, and the obvious gloss of printing is beautiful.
Claims (3)
1. a coated newsprint paper is characterized in that, this paper quantitatively is 45-49g/m
2, whiteness 59-63%, laterally tear index is greater than 5.5m N.m
2/ g; Opacity is greater than 95%, and surface strength is greater than 1.0m/s; The positive and negative two sides of smoothness is on average greater than 60S, and smoothness two sides difference is less than 20%; Fracture length is vertically greater than 4500m.
2. the manufacturing approach of the described coated newsprint paper of claim 1 is characterized in that: comprise the 100% deinking recycled fibers slurry of producing with full 8# waste paper, add retention agent polyacrylamide, dyestuff alkalescence article purple and cationic starch and be mixed with the paper stock slurry; Through head box cloth slurry, wet end moulding, four rollers, three nip unipress, preceding oven dry is dry; Coloring earth coating ornamenting is carried out on the surface; The back oven dry is dry, reel machine batches, the outer rewinding of machine, and technical parameter is following:
(1) deinking pulp brightness 47-50%, freedom 220-280CSF;
(2) online pulp density 0.8wt%-1.0wt%, online slurry pH value 7-8, headbox stock freedom 60-100CSF, machine water pulp density 0.35wt%-0.45wt%, head box cationic demand 200-300uq/l;
(3) coating formulation technology: coating solid content 50wt%-55wt%, dope viscosity 200-600mpa.s, coating pH value 8.5-9.2, coating weight 7-10g/m
2
(4) page goes out to squeeze moisture 50wt%-55wt%, and page advances coating machine moisture 90wt%-95wt%, coating machine moisture 6wt%-9wt% under the page;
(5) soft calendaring pressure 20-70kN/m, temperature 60-90 ℃.
3. the manufacturing approach of the described coated newsprint paper of claim 1 is characterized in that method step is:
1) preparation deinking slurry is with 8
#Waste paper is raw material, after deinking, hydrogen peroxide oxidation bleaching and reducing bleach bleaching, gets the deinking recycled fibers slurry, its deinking pulp brightness 47-50%;
2) during the deinking that makes toward step 1) is starched; Adding is made retention agent with respect to the polyacrylamide of oven dry stock mass ratio 0.03wt%～0.05wt%; Quaternary ammonium cation starch with respect to oven dry stock mass ratio 0.8wt%-1.0wt%; Oven dry stock per ton adds 30～50g alkalescence article purple and makes dyestuff, is made into pulp material;
3) manufacture paper with pulp, step 2) pulp material that is made into is through head box cloth slurry, wet end moulding, four rollers, three nip unipress; Preceding oven dry is dry; Online pulp density 0.8wt%-1.0wt%, online slurry pH value 7-8, headbox stock freedom 60-100CSF; Machine water pulp density 0.35wt%-0.45wt%, head box cationic demand 200-300uq/l;
4) go out the ornamenting of the dry page surface coated of preceding oven dry, the back oven dry is dry, reel machine batches, the outer rewinding of machine, and the coated newsprint paper that promptly makes,
Wherein, the surface coated material formula is 100 parts of inorganic mineral pigments, is coated with gluing starch 10-12 part, carboxylic styrene butadiene latex 1-2 part; Coating solid content 50wt%-55wt%, viscosity 200-600mpa.s, pH 8.5-9.2, coating weight 7-10g/m
2, go out to squeeze moisture 50wt%-55wt%, advance coating machine moisture 90wt%-95wt%, following coating machine moisture 6wt%-9wt%, soft calendaring pressure 20-70kN/m, 60-90 ℃ of soft press-polishing machine temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100609114A CN102587193A (en) | 2012-03-09 | 2012-03-09 | Coating newsprint and making method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100609114A CN102587193A (en) | 2012-03-09 | 2012-03-09 | Coating newsprint and making method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102587193A true CN102587193A (en) | 2012-07-18 |
Family
ID=46476391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100609114A Pending CN102587193A (en) | 2012-03-09 | 2012-03-09 | Coating newsprint and making method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102587193A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590282A (en) * | 2012-08-14 | 2014-02-19 | 金东纸业（江苏）股份有限公司 | Coating and coating used coated paper |
| CN103590283A (en) * | 2012-08-14 | 2014-02-19 | 金东纸业（江苏）股份有限公司 | Coating and coating used coated paper |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1386929A (en) * | 2002-06-29 | 2002-12-25 | 岳阳纸业股份有限公司 | Refined high-whiteness newsprint for color printing and its making method |
| CN1455046A (en) * | 2003-01-15 | 2003-11-12 | 岳阳纸业股份有限公司 | Surface glued newsprinting paper and manufacturing method thereof |
| CN1769587A (en) * | 2005-09-22 | 2006-05-10 | 岳阳纸业股份有限公司 | Refined light weight coated paper and its production process |
-
2012
- 2012-03-09 CN CN2012100609114A patent/CN102587193A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1386929A (en) * | 2002-06-29 | 2002-12-25 | 岳阳纸业股份有限公司 | Refined high-whiteness newsprint for color printing and its making method |
| CN1455046A (en) * | 2003-01-15 | 2003-11-12 | 岳阳纸业股份有限公司 | Surface glued newsprinting paper and manufacturing method thereof |
| CN1769587A (en) * | 2005-09-22 | 2006-05-10 | 岳阳纸业股份有限公司 | Refined light weight coated paper and its production process |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590282A (en) * | 2012-08-14 | 2014-02-19 | 金东纸业（江苏）股份有限公司 | Coating and coating used coated paper |
| CN103590283A (en) * | 2012-08-14 | 2014-02-19 | 金东纸业（江苏）股份有限公司 | Coating and coating used coated paper |
| CN103590282B (en) * | 2012-08-14 | 2015-12-02 | 金东纸业（江苏）股份有限公司 | Coating and apply the coated paper of this coating |
| CN103590283B (en) * | 2012-08-14 | 2015-12-02 | 金东纸业（江苏）股份有限公司 | Coating and apply the coated paper of this coating |
| US9718980B2 (en) | 2012-08-14 | 2017-08-01 | Goldeast Paper (Jiangsu) Co., Ltd | Coating composition and coated paper |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102877365B (en) | Manufacturing method of high-bulk coating printing paper | |
| CN101324038B (en) | Papermaking process of low basis weight enamelled paper | |
| CN102912691B (en) | Coated craft paper and production method thereof | |
| CN101638861B (en) | Manufacturing method of industrial film coated base paper | |
| CN100351465C (en) | Refined light weight coated paper and its production process | |
| CN105586802B (en) | A kind of manufacture method of the rich body paper of product | |
| CN103321096B (en) | A kind of coated white cardboard and production technology thereof | |
| CN101725081B (en) | Coating paper for printing | |
| US20110180224A1 (en) | Processes for preparing coated printing papers using hardwood mechanical pulps | |
| CN106894277A (en) | A kind of manufacture method of lottery ticket dedicated raw paper | |
| JP3978567B2 (en) | Newspaper production method | |
| CN101205693A (en) | Coated newsprint paper | |
| CN104018389A (en) | Manufacturing process of highlight light-weight copperplate paper | |
| CN102839559B (en) | Manufacturing method of coated dictionary paper | |
| CN104831578A (en) | Preparation method of high-grade thermosensitive base paper | |
| CN1276151C (en) | Special pigment finishing offset paper and producing method thereof | |
| CN105735035A (en) | Method for producing base wallpaper from waste paper deinking pulp | |
| CN1208519C (en) | Surface glued newsprinting paper and manufacturing method thereof | |
| CN102587193A (en) | Coating newsprint and making method thereof | |
| CN103437232B (en) | A kind of senior coated white paperboard production technology | |
| CN104195877A (en) | Yellow card paper and manufacturing method thereof | |
| CN103437243A (en) | Stable quality coated white board papermaking process | |
| CN103103871A (en) | Preparation method for producing decorative pearly-luster body paper in in-pulp dying mode | |
| CN113564957B (en) | Preparation process of micro-coated printing paper | |
| CN105463937A (en) | A producing method of magnetic information paper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120718 |