Long fibre nonwoven wallpaper base stock and preparation method thereof, and nonwoven wallpaper prepared by the same
A long-fiber, base paper technology, applied in synthetic cellulose/non-cellulose material pulp/paper, fiber raw material processing, textile and papermaking, etc., can solve the problem of unsightly appearance of wallpaper, and achieve beautiful appearance and good flame retardant performance , peel off the complete effect
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Embodiment 1
[0025] Fiber ratio: softwood pulp 50%, hardwood pulp 30%, mixed pulp 20°SR, polyester fiber 20%, 1.5D×10mm, base paper basis weight 122g / m 2 , Dip-coat polyvinyl alcohol, starch and surface sizing agent in the machine, the concentration of the coating solution is 4%, and the coating amount is 6%. Polyvinyl alcohol: starch: surface sizing agent = 4: 1: 0.8 (both refer to the absolute dry weight of the solution), and the base paper weight is 135g / m 2 .
[0026] Coating outside the machine 15g / m 2 . Coating liquid formula: 70 parts of 90 heavy calcium, 25 parts of 95 light calcium, 25 parts of china clay, 50 parts of water, 1 part of CMC, 1 part of dispersant (solid content 40%), 2 parts of lubricant, 1.5 parts of water-resistant agent, Latex 40 parts, paper weight 150g / m 2 , the paper index is as follows: Quantitative 150g / m 2 , tightness 0.45g / cm 3 , tensile strength 9.5kn / m, wet strength 2.5kn / m, surface absorption 30g / m 2 , Opacity 86%, tear length 5100mn, transverse 6...
Embodiment 2
[0028] Fiber ratio: softwood pulp 40%, hardwood pulp 30%, pulp density 18°SR, soybean protein fiber 30%, 3.5D×5mm, base paper basis weight 83g / m 2 , In-machine dip-coating of epoxy resin and surface sizing agent=10:0.5 (both refer to the dry weight of the solution), the concentration of the coating solution is 4%, and the coating amount is 5%. The weight of base paper is 91g / m 2 .
[0029] Coating outside the machine 20g / m 2 , coating liquid formula, 70 parts of 90 heavy calcium, 25 parts of 95 light calcium, 25 parts of china clay, 50 parts of water, 1 part of CMC, 1 part of dispersant (solid content 40%), 2 parts of lubricant, 1.5 parts of water repellent , 40 parts of latex, paper weight 111g / m2 . The paper index is as follows: Quantitative 111g / m 2 , tightness 0.56g / cm 3 , tensile strength 7.8kn / m, wet strength 1.7kn / m, surface absorption 28g / m 2 , 78% opacity, tearing longitudinal 2500mn, transverse 3200mn, stretch rate 0.6%.
Embodiment 3
[0031] Fiber ratio: softwood pulp 20%, pulp density 25°SR, viscose fiber 80%, 5D×2mm, base paper basis weight 122g / m 2 , Dip-coated SBR and surface sizing agent=20:1 (both refer to the dry weight of the solution) in the machine, the concentration of the coating solution is 4%, the coating amount is 6%, and the base paper weight is 135g / m 2 , coating 15g / m outside the machine 2 .
[0032] Coating liquid formula, 70 parts of 90 heavy calcium, 25 parts of 95 light calcium, 25 parts of china clay, 50 parts of water, 1 part of CMC, 1 part of dispersant (solid content 40%), 2 parts of lubricant, 1.5 parts of water repellent, Latex 40 parts, paper weight 150g / m 2 , the paper index is as follows: Quantitative 150g / m 2 , tightness 0.38g / cm 3 , tensile strength 3.5kn / m, wet strength 1.2kn / m, surface absorption 35g / m 2 , Opacity 89%, tear length 2300mn, transverse 2900mn, stretch rate 0.2%.
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