CN101781868A - Hot-pressing production process of standard paperboard - Google Patents
Hot-pressing production process of standard paperboard Download PDFInfo
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- CN101781868A CN101781868A CN200910044382A CN200910044382A CN101781868A CN 101781868 A CN101781868 A CN 101781868A CN 200910044382 A CN200910044382 A CN 200910044382A CN 200910044382 A CN200910044382 A CN 200910044382A CN 101781868 A CN101781868 A CN 101781868A
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Abstract
The invention relates to a hot-pressing production process of a standard paperboard, belonging to the technical field of papermaking process and aiming to produce the standard paperboard through adopting the new hot-pressing production process. The hot-pressing production process comprises the following steps of: molding wood pulp into a wet paper blank in a molding cylinder after smashing, concentrating, grinding and stabilizing; then pressurizing and drying the wet paper blank in a hot press to form a semi-finished product; and finally, curing, calendaring and cutting, and packaging and warehousing a finished product qualified through inspection. The paperboard produced by adopting the hot-pressing process has uniform thickness, small homogeneous difference, uniform moisture and enhancement of processing precision. Meanwhile, the hot-pressing production process has high mechanical degree, can reduce production links and relieve labor intensity and has high finished product rate to reduce the recycling and consumption of waste products and save energy.
Description
Technical field
The present invention relates to the production technology of standard paperboard, belong to the paper-making technology field.
Background technology
Standard paperboard is mainly used in war products, and for the usefulness of the packing of making accurate special moulded product and important goods, the required thickness unanimity, paper is smooth, moisture is even, has certain percentage elongation and mechanical strength.At present standard paperboard adopts the cold-press method explained hereafter, with a certain proportion of raw material of wood pulp, through shredded paper, the operation manufacturings such as moulding, setting-out, box-type drying, press polish of pulling an oar, manufacture paper with pulp form.The cal(l)iper instability that cold-press method is produced, big with the version difference, moisture is inhomogeneous, the out-of-flatness of paper warpage, labor strength is big, and yield rate is low.
Summary of the invention
The objective of the invention is to adopt new hot-pressing production process production standard cardboard.
The object of the present invention is achieved like this: the wood pulp pulping, dehydration is concentrated into stock tank, wear into the desired beating degree of product technology with being pumped to two disks: 38 ± 2 ° of SR, weight in wet base 12 ± 2g, the paper pulp that mill is good is diluted to 2.0 ± 0.5% concentration by regulating box, through the desander desanding, enter high-order slurry-stablizing case after the selectifier slagging-off, be diluted to 0.23 ± 0.05% paper pulp again, flow into cylinder and form the l Water Paper embryo, stick to and be passed to the moulding cylinder on the woollen blanket, by moulding cylinder and carrying roller extruding the l Water Paper embryo is dewatered to moisture 72 ± 2%, paper embryo after the dehydration is circumference operation progressive additive on the moulding cylinder, under the quantitative stable status of individual layer, control the thickness of cardboard with the number of plies of page, when the moulding cylinder l Water Paper number of plies reaches predetermined quantity, thickness meter indicator lamp is bright, the artificial l Water Paper embryo that cuts off, enter the wet plate transporter, with flying saw the l Water Paper embryo is cut into given size, deliver on the backing plate that is lined with the metal twine, enter charger one by one, send into hot press after filling 15 layers successively again and carry out high pressure-temperature and dehydrate, hot press pressure is that hydraulic system provides, and thermal source is a high steam.Moulding pressure I section 8～12MPa, II section 5～7MPa, 140～150 ℃ of baking temperatures are according to the different pressurization of thickness I section 60～400s drying time, II section 240～2200s.When dehydrate reach setting-up time after, the press automatically unloading unloads plate by unloader, check thickness, outward appearance and following machine moisture then, following machine moisture Control is 3～5%, qualified semi-finished product enter humidifier (humidification is to moisture content of finished products 10～12%), health, press polish again, cut finished product packing warehouse-in after the assay was approved.
Advantage of the present invention is:
1, the cal(l)iper of heat pressing process production is even, and is little with the version difference; Moisture is even, the processing precise raising.
2, the hot-pressing production process mechanization degree is higher, can simplify production link, reduces labor intensity; The yield rate height reduces the waste product reuse and consumes energy savings.
Description of drawings
Fig. 1 is a standard paperboard hot-pressing production process flow chart.
The specific embodiment
Embodiment 1 and 2, the data of bracket are not embodiment 1, the data in the bracket are embodiment's 2.
Wood pulp 1 size degradation is become pulping 2, after slanted screen concentrates 3, enter defibrination 4,36 (40) ° of SR of beating degree, weight in wet base 10 (14) g.Paper pulp is regulated starching amount and concentration through regulating box 5, desander desanding 6, after selectifier 7 slagging-off, enter slurry-stablizing case 8 and flow to cylinder 9, formation l Water Paper page or leaf sticks to and is transported to moulding cylinder 11 on the woollen blanket 10, the l Water Paper embryo on the moulding cylinder circumference operation and carrying roller 12 extrusion dehydrations to moisture 71 (75) %, when moulding cylinder l Water Paper level reaches predetermined number of layers, thickness meter 13 indicator lamps are bright, the artificial l Water Paper embryo that cuts off, be transferred to wet plate transportation felt 14, utilization flies to saw 15 and is cut into preliminary dimension, deliver on the backing plate 16 that the metal twine is housed, enter charger 17 one by one, send hot press 18 high humidity high pressure to dehydrate after filling 15 layers, hot press pressure is provided by hydraulic system 19, and thermal source 20 is a high steam.Hot press moulding pressure I section 8～12MPa, II section 5～7MPa, 140 (150) ℃ of humidity, according to thickness different pressing time of I section 60 (400) s, II section 240 (2200) s, when reaching setting-up time press automatically unloading, draw in unloader 21 and unload plate one by one, through the inspection of semifinished product 22 thickness, outward appearance and mensuration is machine moisture 3 (5) % down, enter humidifier 23 humidifications to moisture content of finished products 10 (12) %, again through health 24 balancing water, cut edge by the laggard bead cutter 26 of calender 25 press polish, cut into given size, after finished product inspection 27, qualified products packing 28 warehouse-ins 29.
Claims (1)
1. the hot-pressing production process of standard paperboard is characterized in that: 1, with the wood pulp pulping, dehydration is concentrated into stock tank, wears into the desired beating degree of product technology with being pumped to pair disks: 38 ± 2 ° of SR, weight in wet base 12 ± 2g; 2, the paper pulp that mill is good is diluted to 2.0 ± 0.5% concentration by regulating box, through the desander desanding, enter high-order slurry-stablizing case after the selectifier slagging-off, be diluted to 0.23 ± 0.05% paper pulp again, 3, the paper pulp that dilution is good flows into cylinder and forms the l Water Paper embryo, stick to and be passed to the moulding cylinder on the woollen blanket, by moulding cylinder and carrying roller extruding the l Water Paper embryo is dewatered to moisture 72 ± 2%, paper embryo after the dehydration is circumference operation progressive additive on the moulding cylinder, under the quantitative stable status of individual layer, control the thickness of cardboard with the number of plies of page, when the moulding cylinder l Water Paper number of plies reached predetermined quantity, thickness meter indicator lamp was bright; 4, manually cut off the l Water Paper embryo, enter the wet plate transporter, the l Water Paper embryo is cut into given size, deliver on the backing plate that is lined with the metal twine, enter charger one by one, send into hot press after filling 15 layers successively again and carry out high pressure-temperature and dehydrate with flying saw; 5, hot press pressure is that hydraulic system provides, and thermal source is a high steam, moulding pressure I section 8～12MPa, and II section 5～7MPa, 140～150 ℃ of baking temperatures are according to the different pressurization of thickness I section 60～400s drying time, II section 240～2200s; 6, when dehydrate reach setting-up time after, the press automatically unloading unloads plate by unloader, check thickness, outward appearance and following machine moisture then, following machine moisture Control is 3～5%, qualified semi-finished product enter humidifier, humidification is to moisture content of finished products 10～12%, health, press polish again, cuts finished product packing warehouse-in after the assay was approved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100443827A CN101781868B (en) | 2009-09-21 | 2009-09-21 | Hot-pressing production process of standard paperboard |
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| CN2009100443827A CN101781868B (en) | 2009-09-21 | 2009-09-21 | Hot-pressing production process of standard paperboard |
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| CN101781868A true CN101781868A (en) | 2010-07-21 |
| CN101781868B CN101781868B (en) | 2012-08-22 |
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| CN2009100443827A Active CN101781868B (en) | 2009-09-21 | 2009-09-21 | Hot-pressing production process of standard paperboard |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493287A (en) * | 2011-12-08 | 2012-06-13 | 南京博方生物科技有限公司 | Method for producing plate by fiber-containing sludge and application thereof |
| CN105256665A (en) * | 2015-09-07 | 2016-01-20 | 广东华凯科技股份有限公司 | Automatic high density fiberboard production line |
| CN109183518A (en) * | 2018-09-27 | 2019-01-11 | 漯河元泰包装材料有限公司 | Couch board heat pressing process and system |
| CN109403114A (en) * | 2018-11-09 | 2019-03-01 | 常州市英中电气有限公司 | Manufacture the device and method of low density paperboard |
| CN111648157A (en) * | 2020-05-25 | 2020-09-11 | 潍坊汇胜绝缘技术有限公司 | Production process of medium-density insulating paperboard |
| CN111910457A (en) * | 2020-08-03 | 2020-11-10 | 湖南广信科技股份有限公司 | Paperboard and manufacturing method and application thereof |
| TWI720359B (en) * | 2018-10-29 | 2021-03-01 | 大陸商常州市誠鑫環保科技有限公司 | Stress relief method and device in the manufacturing process of molded products |
| WO2021137806A1 (en) * | 2019-12-31 | 2021-07-08 | Kahramanmaras Kagit Sanayi Ve Tic. A. S. | A paper production machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT405847B (en) * | 1996-09-16 | 1999-11-25 | Zellform Ges M B H | METHOD FOR PRODUCING BLANKS OR SHAPED BODIES FROM CELLULOSE FIBERS |
| JP2002129499A (en) * | 2000-10-16 | 2002-05-09 | Eco Ai:Kk | Method for coating pulp molded product with coating agent |
-
2009
- 2009-09-21 CN CN2009100443827A patent/CN101781868B/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493287A (en) * | 2011-12-08 | 2012-06-13 | 南京博方生物科技有限公司 | Method for producing plate by fiber-containing sludge and application thereof |
| CN105256665A (en) * | 2015-09-07 | 2016-01-20 | 广东华凯科技股份有限公司 | Automatic high density fiberboard production line |
| CN109183518A (en) * | 2018-09-27 | 2019-01-11 | 漯河元泰包装材料有限公司 | Couch board heat pressing process and system |
| TWI720359B (en) * | 2018-10-29 | 2021-03-01 | 大陸商常州市誠鑫環保科技有限公司 | Stress relief method and device in the manufacturing process of molded products |
| CN109403114A (en) * | 2018-11-09 | 2019-03-01 | 常州市英中电气有限公司 | Manufacture the device and method of low density paperboard |
| WO2021137806A1 (en) * | 2019-12-31 | 2021-07-08 | Kahramanmaras Kagit Sanayi Ve Tic. A. S. | A paper production machine |
| CN111648157A (en) * | 2020-05-25 | 2020-09-11 | 潍坊汇胜绝缘技术有限公司 | Production process of medium-density insulating paperboard |
| CN111910457A (en) * | 2020-08-03 | 2020-11-10 | 湖南广信科技股份有限公司 | Paperboard and manufacturing method and application thereof |
| CN111910457B (en) * | 2020-08-03 | 2023-03-24 | 湖南广信科技股份有限公司 | Paperboard and manufacturing method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101781868B (en) | 2012-08-22 |
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Owner name: HUNAN GUANGXIN TECHNOLOGY CO., LTD. Free format text: FORMER NAME: HUNAN GUANGXIN ELECTRICAL TECHNOLOGY CO., LTD. |
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Address after: 422900, No. 8, East West Road, brewing Town, Xinshao County, Hunan Province Patentee after: HUNAN GUANGXIN ELECTRICAL TECHNOLOGY CO., LTD. Address before: 422900, No. 8, East West Road, brewing Town, Xinshao County, Hunan Province Patentee before: Hunan Guangxin Electrical Technology Co., Ltd. |