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A technology for coating paperboard and white paperboard, applied in the field of pulp and paper making, can solve problems such as increasing the manufacturing cost of coated whiteboard, and achieve the effects of beautiful appearance, reduction of bleaching pollution, and reduction of production cost
Inactive Publication Date: 2012-09-19
臧永华
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Embodiment 1
[0035] Production of 250 g / m for coated base paper with 3 ply unbleached board 2 Coated white cardboard:
[0036] Figure-2 is the coated white paperboard produced by the present invention with 3 layers of paperboard without bleaching pulp as the coated base paper. The adopted process scheme is:
[0037] (1) The weight is 215g / m by triple-fold wire forming equipment 2 Coated base paper without bleached pulp, of which:
[0038] Surface layer: 20% unbleached softwood chemical pulp, 80% old carton OCC waste paper recycled pulp, basis weight 60g / m 2 ;
[0039] Core layer: composed of 45% old newspaper recycled pulp, 40% mixed waste paper recycled pulp, 15% old carton OCC waste paper recycled pulp, basis weight 95g / m 2 ;
[0040] Bottom layer: Composed of 100% old newspaper deinked recycled pulp, basis weight 60g / m 2 .
[0041] (2) Carry out sizing treatment to the cardboard front with sizing equipment, sizing liquid is made up of starch and sizing aid alkyl succinic anhydrid...
Embodiment 2
[0049] 350g / m produced with 4 layers of coated base paper without bleached pulp 2 Coated white cardboard
[0050] Figure-3 is the coated white cardboard produced with 4-layer coated base paper of the present invention, and the adopted process scheme is:
[0051] (1) Use four-fold wire forming equipment to make quantitative 315g / m 2 Coated base paper without bleached pulp, of which:
[0052] Surface layer: 20% unbleached softwood chemical pulp, 80% old carton OCC waste paper recycled pulp, basis weight 60g / m 2 ;
[0053] Lining: 80% old newspaper recycled pulp, 20% OCC waste paper recycled pulp, basis weight 95g / m 2 ;
[0054] Core layer: composed of 50% old newspaper recycled pulp, 40% mixed waste paper recycled pulp, 10% OCC waste paper recycled pulp, basis weight 100g / m 2 ;
[0055] Bottom layer: Composed of 100% old newspaper deinked recycled pulp, basis weight 60g / m 2 ,
[0056] (2) Carry out sizing treatment to the cardboard front with sizing equipment, sizing li...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract
The invention discloses an environment-friendly coated white board which sequentially comprises a board body paper bottom layer, a core layer, a surface layer, a bottom coated layer and a surface coated layer from bottom to top. The whiteness of the coated white board ranges from 78% to 88%, and the quantification of the coated white board ranges from 200g/m<2> to 450g/m<2>. The environment-friendly coated white board is characterized in that the board surface layer is made of recycled pulp from waste paper of old corrugated cartons OCC and uncolored wood pulp which are mixed, or is made of one of the recycled pulp from the waste paper of old corrugated cartons OCC and the uncolored wood pulp, the quantification of the board surface layer ranges from 40g/m<2> to 80g/m<2>, the quantification of each of the bottom coated layer and the surface coated layer ranges from 6g/m<2> to 20g/m<2>, and the total coating quantity ranges from 12g/m<2> to 40g/m<2>. The coated white board is mainly made of the unbleached recycle pulp of the waste paper, has the advantages of capabilities of saving wood resources and reducing beaching pollution, low production cost, fine printability, attractive appearance, high strength and the like, and can replace traditional coated kraft card boards and coated white-surface white boards to manufacture packaging cartons and folded cartons such as wine boxes, boxes for articles for daily life, healthcare product boxes, electronic product boxes and high-grade clothing boxes.
Description
technical field [0001] The invention belongs to the field of pulping and papermaking, and relates to an environment-friendly coated white paperboard. Background technique [0002] Beautiful appearance, suitable for all kinds of color printing, coated white paperboard (also known as folding box board) with waste paper recycled pulp as the main raw material is more and more widely used in high-end commodity packaging. In order to make coated white paperboard reach the whiteness required by consumers (also known as brightness, the national standard GB / T 10335.4-2004 stipulates that the whiteness of the front of the first-class product and the first-class product are respectively higher than 80% and 78%), currently domestic Coated white paperboards in the foreign market use a large amount of bleached wood pulp or / and high-brightness office waste paper bleached deinked recycled pulp in the surface layer of the base paper, and the dosage is generally 20-60g / m 2 ,see picture 1. H...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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