CN102912690A - Liquid packing paper with high stiffness and production technology thereof - Google Patents
Liquid packing paper with high stiffness and production technology thereof Download PDFInfo
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- CN102912690A CN102912690A CN2012104294077A CN201210429407A CN102912690A CN 102912690 A CN102912690 A CN 102912690A CN 2012104294077 A CN2012104294077 A CN 2012104294077A CN 201210429407 A CN201210429407 A CN 201210429407A CN 102912690 A CN102912690 A CN 102912690A
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Abstract
The invention provides liquid packing paper with high stiffness, which comprises base paper and a coating layer, wherein base paper comprises a surface course, a sandwich layer and a bottom layer which are stacked sequentially; the definite quantity of the surface course accounts for 20 to 40 percent of the total definite quantity of the liquid packing paper; the definite quantity of the sandwich layer accounts for 30 to 55 percent of the total definite quantity of the liquid packing paper; the definite quantity of the bottom layer accounts for 10 to 25 percent of the total definite quantity of the liquid packing paper; the definite quantity of the coating layer accounts for 8 to 18 percent of the total definite quantity of the liquid packing paper; the coating layer comprises a surface coating, a pre-coating and a back coating; the surface coating is coated on the pre-coating; the pre-coating is coated on the surface course; and the back coating is coated on the bottom surface of the bottom layer. The liquid packing paper disclosed by the invention achieves high stiffness and good packing forming effect. A liquid packing box that is manufactured by a liquid packing paperboard with high stiffness is not easy to deform, and corners of the packing box are not easy to sink.
Description
Technical field
The present invention relates to pulp technology for making paper, specifically a kind of flexible package punch paper and production technology thereof that under equal quantitative conditions, has high-stiffness.
Background technology
Flexible package punch paper refers to through after printing, the film processing, the coating paperboard that is used for packing the liquid beverages such as milk, fruit juice.And the coating paperboard is specified amount greater than 1 70 g/ms paper, and the coating paperboard is comprised of coating layer and body paper, and wherein coating layer generally has layer 2-4, and body paper generally has the 3-5 layer.
The domestic flexible package punch paper of producing is generally coated white cardboard, and the general whole use bleached wood pulps of the surface layer of its body paper of coated white cardboard, sandwich layer and bottom are made, and the liquid packaging white cardboard of making is white liquid packing art post paperboard.Liquid packaging white cardboard in the market is easily distortion behind packing moulding, can such as the liquid such as milk, fruit juice, brings inconvenience for the transportation of papery filled drink, storage.Be to improve the intensity of packing box, can only always quantitatively improve paper sheet stiffness by what improve liquid packaging white cardboard, so just increased the consumption of wood pulp and chemicals, increased considerably production cost.
Summary of the invention
A wherein purpose of the present invention has been to provide a kind of flexible package punch paper of high-stiffness.
Another object of the present invention is to provide a kind of production technology of flexible package punch paper of high-stiffness.
In order to achieve the above object, the present invention has adopted following technical scheme:
A kind of flexible package punch paper of high-stiffness comprises body paper and coating layer, and described body paper is comprised of surface layer, sandwich layer and the bottom of successively stack, described surface layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 20%-40%; Described sandwich layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 30%-55%; Described bottom quantitatively to account for the total quantitative ratio of flexible package punch paper be 10%-25%; Described coating layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 8%-18%;
Described coating layer comprises finishing coat, precoated shet and back coating, and this finishing coat is coated on this precoated shet, and this precoated shet is coated on this surface layer, and this back coating is coated the bottom surface of this bottom.
The component of described finishing coat and precoated shet comprises: calcium carbonate, the soil of delaminating, SA latex, water repellent agent and lubricant; The component of described back coating is starch or the component consistent with precoated shet.
As the preferred technical solution of the present invention: described surface layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 25%-35%; Described sandwich layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 35%-50%; Described bottom quantitatively to account for the total quantitative ratio of flexible package punch paper be 15%-20%, described coating layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 8%-12%.
As the preferred technical solution of the present invention: described surface layer is the bleached wood pulp layer; Described sandwich layer is not for floating the Original Pulp layer; Described bottom is not for floating the Original Pulp layer.
As the preferred technical solution of the present invention: the component proportion parts by weight of described finishing coat and precoated shet are: calcium carbonate 30-70 part, the native 30-70 part of delaminating, SA latex 13-20 part, water repellent agent 0.2-0.5 part, lubricant 0.1-0.5 part.
A kind of flexible package punch paper production technology of high-stiffness may further comprise the steps:
Surface layer slurry, center stock, base pastes enter respectively the head box of three cascade net forming paper machines after the mixing of pulper size degradation, screening, fiberizer making beating;
Wire-cloths manufactures paper with pulp, compound, produce have surface layer, the paper of sandwich layer, bottom three-decker; The slurry network speed of surface layer, sandwich layer, bottom three formable layer nets is than being adjusted into respectively: 0.966-0.988,0.927-0.975,0.907-0.950;
Enter the press section of paper machine, squeeze through four roads; The pressure of first squeezing is adjusted into: 85kN/m-100kN/m; The pressure of second squeezing is adjusted into: 90kN/m-120kN/m; The pressure of the 3rd road squeezing is adjusted into: 650kN/m-720kN/m; The pressure of the 4th road squeezing is adjusted into: 3 0kN/m-50kN/m;
Drying, top sizing, enter belt calender, carry out the belt press polish, the pressure of belt press polish is adjusted into 10kN/m-40kN/m; Get body paper;
The coating coating layer: the scraper by paper machine is coated with a precoated shet at facing surface, at precoated shet coating one finishing coat, at bottom-surface coated one back coating of bottom;
Dry, enter soft press-polishing machine and carry out soft calendaring;
Batch the packing finished product.
As the preferred technical solution of the present invention: the component of described finishing coat and precoated shet comprises: calcium carbonate, the soil of delaminating, SA latex, water repellent agent and lubricant; Described back coating is starch or the component consistent with precoated shet.
As the preferred technical solution of the present invention: described surface layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 20%-40%; Described sandwich layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 30%-55%; Described bottom quantitatively to account for the total quantitative ratio of flexible package punch paper be 10%-25%, described coating layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 8%-18%.
As the preferred technical solution of the present invention: described surface layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 25%-35%; Described sandwich layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 35%-50%; Described bottom quantitatively to account for the total quantitative ratio of flexible package punch paper be 15%-20%, described coating layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 8%-12%.
As the preferred technical solution of the present invention: described surface layer adopts bleached wood pulp to make; Described sandwich layer employing is not floated Original Pulp and is made; Described bottom employing is not floated Original Pulp and is made.
As the preferred technical solution of the present invention: the component proportion parts by weight of described finishing coat and precoated shet are: calcium carbonate 30-70 part, the native 30-70 part of delaminating, SA latex 13-20 part, water repellent agent 0.2-0.5 part, lubricant 0.1-0.5 part.
Because the present invention is under the prerequisite that keeps paper total quantitatively certain (quantitatively equal), by adjusting three layers of body paper quantitatively and coating layer quantitative, and increase by a back coating in body paper bottom bottom surface, thereby so that the one-tenth paper deflection of producing under equal quantitative conditions is high,, packing box corner not yielding with the liquid packaging that such flexible package punch paper art post paperboard is processed into is difficult for depression, the packing good forming effect.
In addition, adopt when not floating Original Pulp at the sandwich layer of flexible package punch paper of the present invention and bottom, its deflection is apparently higher than sandwich layer and bottom employing bleach chemical pulp.
Also have, if cooperate the technological parameter of adjusting in the paper-making process, as adjusting the technological parameter of slurry network speed ratio, press section pressure, calecder section pressure, the one-tenth paper deflection of producing can be higher.
Have again, when soil is delaminated in use in coating composition of the present invention, can improve the air permeability of coating, improve oil absorbency, so that in follow-up printing, the rate of drying of printing ink is fast, the generation of the fine and smooth minimizing piebald of printed patterns.
Description of drawings
Fig. 1 is the structural representation of the flexible package punch paper of a kind of high-stiffness of the present invention.
Fig. 2 is the production technological process of the flexible package punch paper of a kind of high-stiffness of the present invention.
The specific embodiment
See also Fig. 1, flexible package punch paper shown in the figure, comprise body paper and coating layer, described body paper is comprised of surface layer 101, sandwich layer 102 and the bottom 103 of successively stack, described coating layer comprises finishing coat 105, precoated shet 104 and back coating 106, this finishing coat 105 is coated on this precoated shet 104, and this precoated shet 104 is coated on this surface layer 101, and this back coating 106 is coated the bottom surface of this bottom 103.
Described surface layer 101 quantitatively to account for the total quantitative ratio of flexible package punch paper be 20%-40%; Described sandwich layer 1 02 quantitatively to account for the total quantitative ratio of flexible package punch paper be 30%-55%; Described bottom 103 quantitatively to account for the total quantitative ratio of flexible package punch paper be 10%-25%, described coating layer (finishing coat 105, precoated shet 104 and 106 3 layers of back coatings) quantitatively to account for the total quantitative ratio of flexible package punch paper be 8%-18%.Take quantitatively as 2 10 g/ms flexible package punch paper as example, this surface layer 10 1 quantitatively be 42.0 g/ms-84.0 g/ms; This sandwich layer 102 quantitatively be 63.0 g/ms-115.5 g/ms; This bottom 103 quantitatively be 21.0 g/ms-52.5 g/ms; This coating layer (finishing coat 105, precoated shet 104 and 106 3 layers of back coatings) quantitatively be 16.8 g/ms-37.8 g/ms.
More excellent, described surface layer 10 1 quantitatively to account for the total quantitative ratio of flexible package punch paper be 25%-35%; Described sandwich layer 102 quantitatively to account for the total quantitative ratio of flexible package punch paper be 35%-50%; Described bottom 103 quantitatively to account for the total quantitative ratio of flexible package punch paper be 15%-20%; Described coating layer (finishing coat 105, precoated shet 104 and 106 3 layers of back coatings) quantitatively to account for the total quantitative ratio of flexible package punch paper be 8%-12%.
Described surface layer 101 adopts bleached wood pulp, and sandwich layer 102 adopts the unbleached Original Pulp that do not float to make with bottom 103.Surface layer 101 uses bleached wood pulp to guarantee the good fiber-covered of paper; Sandwich layer 102, bottom 103 use the unbleached deflection that Original Pulp can be given the good bulk of paper and then further improve paper of not floating.Certainly, sandwich layer 102, bottom 103 also can use the chemical wood pulp through bleaching.
Described finishing coat 105 comprises with the component of precoated shet 104: calcium carbonate, the soil of delaminating, SA latex, water repellent agent and lubricant.More excellent scheme is that described finishing coat 105 is: calcium carbonate 30-70 part, the native 30-70 part of delaminating, SA latex 13-20 part, water repellent agent 0.2-0.5 part, lubricant 0.1-0.5 part with the component proportion parts by weight of precoated shet 104.This back coating 106 adopts starch or the component consistent with precoated shet.
See also Fig. 2, the production technology of aforesaid liquid wrapping paper may further comprise the steps:
The production of body paper: surface layer adopts bleached wood pulp, sandwich layer to adopt unbleached Original Pulp, the unbleached Original Pulp that do not float of bottom employing of not floating; Certainly, sandwich layer, bottom also can use the chemical wood pulp through bleaching.After the mixing of pulper size degradation, screening, fiberizer making beating, enter respectively respectively surface layer head box, sandwich layer head box, the bottom head box of three cascade net forming paper machines.
Then, respectively through the veil of paper machine manufacture paper with pulp, the core net is manufactured paper with pulp, spacer screen is manufactured paper with pulp, and is then compound, produce have surface layer, the paper of sandwich layer, bottom three-decker; The slurry network speed of surface layer, sandwich layer, bottom three formable layer nets is than being adjusted into respectively: 0.966-0.988,0.927-0.975,0.907-0.950.
Enter the press section of paper machine, squeeze through four roads; The pressure of first squeezing is adjusted into: 85kN/m-100kN/m; The pressure of second squeezing is adjusted into: 90kN/m-120kN/m; The pressure of the 3rd road squeezing is adjusted into: 650kN/m-720kN/m; The pressure of the 4th road squeezing is adjusted into: 30kN/m-50kN/m.
Drying, top sizing, enter belt calender, carry out the belt press polish, to improve paper surface properties, improve the paper bulk; The pressure of belt press polish is adjusted into 10kN/m-40kN/m.Get at last body paper.Certainly, after manufacturing paper with pulp, squeeze by the wet end of routine, the body paper that obtains behind super-dry, top sizing can be applied to the present invention equally.
The coating coating layer: the scraper by paper machine is coated with a precoated shet at facing surface, at precoated shet coating one finishing coat, at bottom-surface coated one back coating of bottom; Described finishing coat and precoated shet comprise: calcium carbonate, the soil of delaminating, SA latex, water repellent agent and lubricant.More excellent scheme is that the component of used coating and proportioning parts by weight are respectively: calcium carbonate 30-70 part, the native 30-70 part of delaminating, SA latex 13-20 part, water repellent agent 0.2-0.5 part, lubricant 0.1-0.5 part.This back coating 106 adopts starch or the component consistent with precoated shet.
Dry, enter soft press-polishing machine and carry out soft calendaring;
Batch the packing finished product.
Whole production process is carried out aseptic controlling, and the finished paper quality reaches the aseptic packaging standard-required.
More excellent, described surface layer 10 1 quantitatively to account for the total quantitative ratio of flexible package punch paper be 20%-40%; Described sandwich layer 102 quantitatively to account for the total quantitative ratio of flexible package punch paper be 30%-55%; Described bottom 103 quantitatively to account for the total quantitative ratio of flexible package punch paper be 10%-25%, described coating layer (finishing coat 105, precoated shet 104 and 106 3 layers of back coatings) quantitatively to account for the total quantitative ratio of flexible package punch paper be 8%-18%.
More excellent, described surface layer 10 1 quantitatively to account for the total quantitative ratio of flexible package punch paper be 25%-35%; Described sandwich layer 102 quantitatively to account for the total quantitative ratio of flexible package punch paper be 35%-50%; Described bottom 103 quantitatively to account for the total quantitative ratio of flexible package punch paper be 15%-20%; Described coating layer (finishing coat 105, precoated shet 104 and 106 3 layers of back coatings) quantitatively to account for the total quantitative ratio of flexible package punch paper be 8%-12%.
Take quantitatively as 210 g/ms flexible package punch paper as example.
Embodiment one:
Surface layer adopts bleached wood pulp, sandwich layer to adopt unbleached Original Pulp, the unbleached Original Pulp that do not float of bottom employing of not floating, and enters respectively respectively surface layer head box, sandwich layer head box, the bottom head box of three cascade net forming paper machines after the mixing of pulper size degradation, screening, fiberizer making beating.
Then, respectively through the veil of paper machine manufacture paper with pulp, the core net is manufactured paper with pulp, spacer screen is manufactured paper with pulp, and is then compound, produce have surface layer, the paper of sandwich layer, bottom three-decker; The slurry network speed ratio of surface layer, sandwich layer, bottom three formable layer nets is respectively: 0.966,0.927,0.907.
Enter the press section of paper machine, squeeze through four roads; The pressure of first squeezing is: 85kN/m; The pressure of second squeezing is: 90kN/m; The pressure of the 3rd road squeezing is: 650kN/m; The pressure of the 4th road squeezing is: 30kN/m.
Drying, top sizing, enter belt calender, carry out the belt press polish; The pressure of belt press polish is 10kN/m.Get at last body paper.
The coating coating layer: the scraper by paper machine is coated with a precoated shet at facing surface, at precoated shet coating one finishing coat, at bottom-surface coated one back coating of bottom; The component of described finishing coat and the used coating of precoated shet and proportioning parts by weight are respectively: 30 parts in calcium carbonate, delaminate 70 parts in soil, 20 parts in SA latex, 0.2 part of water repellent agent, 0.1 part of lubricant, this back coating adopts starch.
Dry, enter soft press-polishing machine and carry out soft calendaring;
Batch the packing finished product.Whole production process is carried out aseptic controlling, and the finished paper quality reaches the aseptic packaging standard-required.
In the finished paper: surface layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 20%, namely 42.0 g/ms; Sandwich layer 102 quantitatively to account for the total quantitative ratio of flexible package punch paper be 55%, namely 1 15.5 g/ms; Bottom 103 quantitatively to account for the total quantitative ratio of flexible package punch paper be 10%, namely 21.0 g/ms; Coating layer (three layers of finishing coat, precoated shet and back coatings) quantitatively to account for the total quantitative ratio of flexible package punch paper be 15%, namely 31.5 g/ms.
On the flexible package punch paper of producing and the market quantitatively is in 210 g/ms the common liquid packaging white cardboard, national standard quantitatively to be that 2 10 g/ms liquid packaging white cardboard compares detection, and it on the market quantitatively is in 2 10 g/ms the common liquid packaging white cardboard, national standard quantitatively to be 2 10 g/ms liquid packaging white cardboard that its each side physical property all is better than.
Following table be disclosed by the invention quantitatively be quantitatively to be quantitatively to be the physical index testing result of 210 g/ms liquid packaging white cardboard in 210 g/ms the common liquid packaging white cardboard, national standard on 210 g/ms flexible package punch paper and the market:
| Physical index | Quantitatively | Thickness | Deflection (vertical/horizontal stroke) | Air permeability |
| Unit | g/m 2 | μm | mN．m | mL/min |
| Flexible package punch paper of the present invention | 2?1?0 | 290 | 6．3/3．0 | 2．57 |
| Common liquid packaging white cardboard | 2?10 | 258 | 5．1/2．2 | 1．2 |
| The liquid packaging white cardboard of national standard | 2?10 | -- | 5．1／1．65 | -- |
Embodiment two:
Making flow process and the machined parameters of present embodiment are identical with above-described embodiment one, and difference is: the quantitative distribution of surface layer, sandwich layer, bottom, coating layer.
In the finished paper: surface layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 25%, namely 52.2 g/ms; Sandwich layer 102 quantitatively to account for the total quantitative ratio of flexible package punch paper be 50%, namely 105.0 g/ms; Bottom 103 quantitatively to account for the total quantitative ratio of flexible package punch paper be 15%, namely 31.5 g/ms; Coating layer (three layers of finishing coat, precoated shet and back coatings) quantitatively to account for the total quantitative ratio of flexible package punch paper be 10%, namely 21.0 g/ms.
On the flexible package punch paper of producing and the market quantitatively is in 210 g/ms the common liquid packaging white cardboard, national standard quantitatively to be that 2 10 g/ms liquid packaging white cardboard compares detection, and it on the market quantitatively is in 2 10 g/ms the common liquid packaging white cardboard, national standard quantitatively to be 2 10 g/ms liquid packaging white cardboard that its each side physical property all is better than.
Following table be disclosed by the invention quantitatively be quantitatively to be quantitatively to be the physical index testing result of 2 10 g/ms liquid packaging white cardboard in 210 g/ms the common liquid packaging white cardboard, national standard on 2 10 g/ms flexible package punch paper and the market:
| Physical index | Quantitatively | Thickness | Deflection (vertical/horizontal stroke) | Air permeability |
| Unit | 2g/m 2 | μ?m | mN.m | mL/min |
| Flexible package punch paper of the present invention | 2?10 | 284 | 6.0/2.7 | 3.0 |
| Common liquid packaging white cardboard | 2?10 | 258 | 5.1/2.2 | 1.2 |
| The liquid packaging white cardboard of national standard | 2?10 | -- | 5.1/1.65 | -- |
Embodiment three
The making flow process of present embodiment is identical with above-described embodiment one, and difference is: surface layer, sandwich layer, bottom, coating layer quantitatively, the proportioning umber of finishing coat, precoated shet coating, the pressure of the slurry network speed ratio in the manufacturing procedure, squeeze pressure, belt press polish.
The slurry network speed ratio of surface layer, sandwich layer, bottom three formable layer nets is respectively: 0.977,0.95 1,0.929.
The pressure of first squeezing is: 93kN/m; The pressure of second squeezing is adjusted into: 105kN/m; The pressure of the 3rd road squeezing is adjusted into: 685kN/m; The pressure of the 4th road squeezing is adjusted into: 40kN/m.
The pressure of belt press polish is 25kN/m.
The component of finishing coat and the used coating of precoated shet and proportioning parts by weight are respectively: 50 parts in calcium carbonate, delaminate 50 parts in soil, 15 parts in SA latex, 0.35 part of water repellent agent, 0.3 part of lubricant, this back coating adopt the coating coating consistent with finishing coat.
In the finished paper: surface layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 30%, namely 63.0 g/ms; Sandwich layer 102 quantitatively to account for the total quantitative ratio of flexible package punch paper be 45%, namely 94.5 g/ms; Bottom 103 quantitatively to account for the total quantitative ratio of flexible package punch paper be 17%, namely 35.7 g/ms; Coating layer (three layers of finishing coat, precoated shet and back coatings) quantitatively to account for the total quantitative ratio of flexible package punch paper be 8%, namely 16.8 g/ms.
On the flexible package punch paper of producing and the market quantitatively is in 210 g/ms the common liquid packaging white cardboard, national standard quantitatively to be that 2 10 g/ms liquid packaging white cardboard compares detection, and it on the market quantitatively is in 2 10 g/ms the common liquid packaging white cardboard, national standard quantitatively to be 210 g/ms liquid packaging white cardboard that its each side physical property all is better than.
Following table be disclosed by the invention quantitatively be quantitatively to be quantitatively to be the physical index testing result of 2 10 g/ms liquid packaging white cardboard in 210 g/ms the common liquid packaging white cardboard, national standard on 2 10 g/ms flexible package punch paper and the market:
| Physical index | Quantitatively | Thickness | Deflection (vertical/horizontal stroke) | Air permeability |
| Unit | 2g/m 2 | μm | mN.m | mL/min |
| Flexible package punch paper of the present invention | 2?10 | 275 | 5.8/2.4 | 2.8 |
| Common liquid packaging white cardboard | 2?10 | 258 | 5.1/2.2 | 1.2 |
| The liquid packaging white cardboard of national standard | 2?10 | -- | 5.1/1.65 | -- |
Embodiment four
The making flow process of present embodiment is identical with above-described embodiment one, and difference is: surface layer, sandwich layer, bottom, coating layer quantitatively, the proportioning umber of finishing coat, precoated shet coating, the pressure of the slurry network speed ratio in the manufacturing procedure, squeeze pressure, belt press polish.
The slurry network speed ratio of surface layer, sandwich layer, bottom three formable layer nets is respectively: 0.988,0.975,0.950.
The pressure of first squeezing is: 100kN/m; The pressure of second squeezing is adjusted into: 120kN/m; The pressure of the 3rd road squeezing is adjusted into: 720kN/m; The pressure of the 4th road squeezing is adjusted into: 50kN/m.
The pressure of belt press polish is 40kN/m.
The component of finishing coat and the used coating of precoated shet and proportioning parts by weight are respectively: 70 parts in calcium carbonate, delaminate 30 parts in soil, 13 parts in SA latex, 0.5 part of water repellent agent, 0.5 part of lubricant, this back coating adopt the coating coating consistent with finishing coat.
In the finished paper: surface layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 35%, namely 73.5 g/ms; Sandwich layer 102 quantitatively to account for the total quantitative ratio of flexible package punch paper be 35%, namely 73.5 g/ms; Bottom 103 quantitatively to account for the total quantitative ratio of flexible package punch paper be 20%, namely 42.0 g/ms; Coating layer (three layers of finishing coat, precoated shet and back coatings) quantitatively to account for the total quantitative ratio of flexible package punch paper be 10%, namely 2 1.0 g/ms.
On the flexible package punch paper of producing and the market quantitatively is in 210 g/ms the common liquid packaging white cardboard, national standard quantitatively to be that 2 10 g/ms liquid packaging white cardboard compares detection, and it on the market quantitatively is in 2 10 g/ms the common liquid packaging white cardboard, national standard quantitatively to be 210 g/ms liquid packaging white cardboard that its each side physical property all is better than.
Following table be disclosed by the invention quantitatively be quantitatively to be quantitatively to be the physical index testing result of 2 10 g/ms liquid packaging white cardboard in 210 g/ms the common liquid packaging white cardboard, national standard on 2 10 g/ms flexible package punch paper and the market:
| Physical index | Quantitatively | Thickness | Deflection (vertical/horizontal stroke) | Air permeability |
| Unit | 2g/m 2 | μm | mN.m | mL/min |
| Flexible package punch paper of the present invention | 2?10 | 268 | 5.5/2.3 | 2.4 |
| Common liquid packaging white cardboard | 2?10 | 258 | 5.1/2.2 | 1.2 |
| The liquid packaging white cardboard of national standard | 2?10 | -- | 5.1/1.65 | -- |
Embodiment five
Making flow process and the machined parameters of present embodiment are identical with above-described embodiment four, difference is: component and the proportioning parts by weight of described finishing coat and the used coating of precoated shet are respectively: 30 parts in calcium carbonate, delaminate 67 parts in soil, 3 parts of china clay, 17 parts in SA latex, 0.2 part of water repellent agent, 0.1 part of lubricant, and this back coating adopts starch; The quantitative distribution of surface layer, sandwich layer, bottom, coating layer, and surface layer, sandwich layer, bottom all adopt bleached wood pulp.
In the finished paper: described surface layer, sandwich layer, bottom all adopt bleached wood pulp; Surface layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 40%, namely 84.0 g/ms; Sandwich layer 102 quantitatively to account for the total quantitative ratio of flexible package punch paper be 30%, namely 63.0 g/ms; Bottom 103 quantitatively to account for the total quantitative ratio of flexible package punch paper be 12%, namely 25.2 g/ms; Coating layer (three layers of finishing coat, precoated shet and back coatings) quantitatively to account for the total quantitative ratio of flexible package punch paper be 1 8%, namely 37.8 g/ms.
On the flexible package punch paper of producing and the market quantitatively is in 210 g/ms the common liquid packaging white cardboard, national standard quantitatively to be that 2 10 g/ms liquid packaging white cardboard compares detection, and it on the market quantitatively is in 2 10 g/ms the common liquid packaging white cardboard, national standard quantitatively to be 2 10 g/ms liquid packaging white cardboard that its each side physical property all is better than.
Following table be disclosed by the invention quantitatively be quantitatively to be quantitatively to be the physical index testing result of 2 10 g/ms liquid packaging white cardboard in 210 g/ms the common liquid packaging white cardboard, national standard on 210 g/ms flexible package punch paper and the market:
| Physical index | Quantitatively | Thickness | Deflection (vertical/horizontal stroke) | Air permeability |
| Unit | 2g/m 2 | μ?m | mN.m | mL/min |
| Flexible package punch paper of the present invention | 2?10 | 263 | 5.4/2.3 | 2.5 |
| Common liquid packaging white cardboard | 2?10 | 258 | 5.1/2.2 | 1.2 |
| The liquid packaging white cardboard of national standard | 2?10 | -- | 5.1/1.65 | -- |
Embodiment six
The making flow process of present embodiment is as follows:
Surface layer, sandwich layer, bottom all adopt bleached wood pulp, enter respectively respectively surface layer head box, sandwich layer head box, the bottom head box of three cascade net forming paper machines after the mixing of pulper size degradation, screening, fiberizer making beating.
Then, respectively according to the technique of routine through the veil of paper machine manufacture paper with pulp, the core net is manufactured paper with pulp, spacer screen is manufactured paper with pulp, and is then compound, produce have surface layer, the paper of sandwich layer, bottom three-decker.
The press section that enters paper machine according to the technique of routine afterwards squeezes.
Get body paper behind drying, the top sizing.
Component and the proportioning parts by weight of described finishing coat, precoated shet and the used coating of back coating are respectively: 30 parts in calcium carbonate, 70 parts of 1# china clay, 17 parts of styrene-butadiene latexes, 0.2 part of water repellent agent, 0.1 part of lubricant.
In the finished paper: surface layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 23%, namely 48.3 g/ms; Sandwich layer 102 quantitatively to account for the total quantitative ratio of flexible package punch paper be 40%, namely 84.0 g/ms; Bottom 103 quantitatively to account for the total quantitative ratio of flexible package punch paper be 25%, namely 52.5 g/ms; Coating layer (three layers of finishing coat, precoated shet and back coatings) quantitatively to account for the total quantitative ratio of flexible package punch paper be 12%, namely 25.2 g/ms.
On the flexible package punch paper of producing and the market quantitatively is in 210 g/ms the common liquid packaging white cardboard, national standard quantitatively to be that 2 10 g/ms liquid packaging white cardboard compares detection, and it on the market quantitatively is in 2 10 g/ms the common liquid packaging white cardboard, national standard quantitatively to be 2 10 g/ms liquid packaging white cardboard that its each side physical property all is better than.
Following table be disclosed by the invention quantitatively be quantitatively to be quantitatively to be the physical index testing result of 2 10 g/ms liquid packaging white cardboard in 210 g/ms the common liquid packaging white cardboard, national standard on 210 g/ms flexible package punch paper and the market:
| Physical index | Quantitatively | Thickness | Deflection (vertical/horizontal stroke) | Air permeability |
| Unit | 2g/m 2 | μ?m | mN.m | mL/min |
| Flexible package punch paper of the present invention | 2?10 | 273 | 5.6/2.3 | 1.0 |
| Common liquid packaging white cardboard | 2?10 | 258 | 5.1/2.2 | 1.2 |
| The liquid packaging white cardboard of national standard | 2?10 | -- | 5.1/1.65 | -- |
The above is preferred embodiment of the present invention only, is not to limit practical range of the present invention; Every equivalence of doing according to the present invention changes and revises, and is all covered by the scope of claims of the present invention.
Claims (11)
1. the flexible package punch paper of a high-stiffness comprises body paper and coating layer, and described body paper is comprised of surface layer, sandwich layer and the bottom of successively stack, it is characterized in that: described surface layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 20%-40%; Described sandwich layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 30%-55%; Described bottom quantitatively to account for the total quantitative ratio of flexible package punch paper be 10%-25%, described coating layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 8%-18%;
Described coating layer comprises finishing coat, precoated shet and back coating, and this finishing coat is coated on this precoated shet, and this precoated shet is coated on this surface layer, and this back coating is coated the bottom surface of this bottom.
2. the flexible package punch paper of described a kind of high-stiffness according to claim 1 is characterized in that: described surface layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 25%-35%; Described sandwich layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 35%-50%; Described bottom quantitatively to account for the total quantitative ratio of flexible package punch paper be 15%-20%, described coating layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 8%-12%.
3. the flexible package punch paper of described a kind of high-stiffness according to claim 1 and 2, it is characterized in that: described surface layer is the bleached wood pulp layer; Described sandwich layer is not for floating the Original Pulp layer; Described bottom is not for floating the Original Pulp layer.
4. the flexible package punch paper of described a kind of high-stiffness according to claim 1 and 2, it is characterized in that: the component of described finishing coat and precoated shet comprises: calcium carbonate, the soil of delaminating, SA latex, water repellent agent, lubricant; The component of described back coating is starch or the component consistent with precoated shet.
5. the flexible package punch paper of described a kind of high-stiffness according to claim 4, it is characterized in that: the component proportion parts by weight of described finishing coat and precoated shet are: calcium carbonate 30-70 part, the native 30-70 part of delaminating, SA latex 13-20 part, water repellent agent 0.2-0.5 part, lubricant 0.1-0.5 part.
6. the flexible package punch paper production technology of a high-stiffness is characterized in that, may further comprise the steps:
Surface layer slurry, center stock, base pastes enter respectively the head box of three cascade net forming paper machines after the mixing of pulper size degradation, screening, fiberizer making beating;
Wire-cloths manufactures paper with pulp, compound, produce have surface layer, the body paper of sandwich layer, bottom three-decker; The slurry network speed of surface layer, sandwich layer, bottom three formable layer nets is than being adjusted into respectively: 0.966-0.988,0.927-0.975,0.907-0.950;
Enter the press section of paper machine, squeeze through four roads; The pressure of first squeezing is adjusted into: 85kN/m-100kN/m; The pressure of second squeezing is adjusted into: 90kN/m-120kN/m; The pressure of the 3rd road squeezing is adjusted into: 650kN/m-720kN/m; The pressure of the 4th road squeezing is adjusted into: 30kN/m-50kN/m;
Drying, top sizing, enter belt calender, carry out the belt press polish, the pressure of belt press polish is adjusted into 10kN/m-40kN/m;
The coating coating layer: the scraper by paper machine is coated with a precoated shet at facing surface, at precoated shet coating one finishing coat, at bottom-surface coated one back coating of bottom;
Dry, enter soft press-polishing machine and carry out soft calendaring;
Batch the packing finished product.
7. the flexible package punch paper production technology of described a kind of high-stiffness according to claim 6 is characterized in that: described surface layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 20%-40%; Described sandwich layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 30%-55%; Described bottom quantitatively to account for the total quantitative ratio of flexible package punch paper be 10%-25%, described coating layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 8%-18%.
8. the flexible package punch paper production technology of described a kind of high-stiffness according to claim 7 is characterized in that: described surface layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 25%-35%; Described sandwich layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 35%-50%; Described bottom quantitatively to account for the total quantitative ratio of flexible package punch paper be 15%-20%, described coating layer quantitatively to account for the total quantitative ratio of flexible package punch paper be 8%-12%.
9. it is characterized in that according to claim 6 or the flexible package punch paper production technology of 7 or 8 described a kind of high-stiffness: described surface layer adopts bleached wood pulp to make; Described sandwich layer employing is not floated Original Pulp and is made; Described bottom employing is not floated Original Pulp and is made.
10. according to claim 6 or the flexible package punch paper production technology of 7 or 8 described a kind of high-stiffness, it is characterized in that: the component of described finishing coat and precoated shet comprises: calcium carbonate, the soil of delaminating, SA latex, water repellent agent, lubricant; The component of described back coating is starch or the component consistent with precoated shet.
11. the flexible package punch paper production technology of described a kind of high-stiffness according to claim 10, it is characterized in that: the component proportion parts by weight of described finishing coat and precoated shet are: calcium carbonate 30-70 part, the native 30-70 part of delaminating, SA latex 13-20 part, water repellent agent 0.2-0.5 part, lubricant 0.1-0.5 part.
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