Light coated printing paper and manufacturing method thereof

Abstract

The present invention discloses a light-weight coated printed paper and its making method. It includes the following steps: using bleached sulfate needle wood (pulp (BKP). Italia poplar alkaline hydrogen peroxide hot-ground mechanical wood pulp (APMP), bleached sulfate reed pulp (BKP) or commercial bleached hard wood pulp; respectively beating, proportioning and making them into mixed pulp; adding auxiliary material to obtain material for making paper and making paper. Said invention adopts the advanced making process of AKD neutral sizing, internal coating and calendering by using soft roll, so that said printing paper has good surface strength, bulkness and air permeability, and is suitable for implementing various colour printing.

Description

technical field

[0001] The invention relates to a light-weight coated printing paper and its manufacturing process. Background technique

[0002] Lightweight coated paper is a new product developed by Japan, Europe and the United States in the 1980s. It means that the coating amount on each side of the base paper is less than 12g / m 2 A kind of printing paper. Through the surface coating treatment and mechanical finishing of paper pages, the surface properties of paper pages are improved. It is widely used in the color printing of high-end magazines, advertisements, pictorials, and textbooks. It develops very rapidly and is the paper type with the fastest market growth rate. .

[0003] Domestic manufacturers of light-weight coated paper mainly include Chenming, Gaotang, etc., and most of the raw materials used are chemical pulp. There is a certain gap with foreign products in terms of paper bulk, air permeability and other technical indicators. Th...

Examples

Embodiment

[0008] Embodiment: The coniferous wood BKP pulp, reed BKP pulp, and poplar APMP pulp that have been beaten to an appropriate degree of beating are adjusted to 600 kg of mixed pulp in a ratio of 28:35:37, and 67 kg of light calcium carbonate filler and other suitable materials are added. Chemical additives are prepared into paper material, which is formed by wire section, combined pressing, and pre-drying; film coating (coating amount 333kg), infrared drying, post-drying, soft calendering, finishing, coiling, and rewinding are obtained by users. 1000kg of lightweight coated printing paper is required. The concentration of the net pulp is 0.75%, the pH value is 8.2, and the degree of percussion is 55°SR; the coating process conditions: the viscosity of the paint is 1000mpa.s, the pH value is 8.5, the solid content: 55%, and the coating amount is 15g / m 2 The paper sheet dryness before sizing is 93%, and the paper sheet dryness after sizing is 68%. Soft calendering process conditi...

technical field

[0001] The invention relates to a light-weight coated printing paper and its manufacturing process. Background technique

[0002] Lightweight coated paper is a new product developed by Japan, Europe and the United States in the 1980s. It means that the coating amount on each side of the base paper is less than 12g / m 2 A kind of printing paper. Through the surface coating treatment and mechanical finishing of paper pages, the surface properties of paper pages are improved. It is widely used in the color printing of high-end magazines, advertisements, pictorials, and textbooks. It develops very rapidly and is the paper type with the fastest market growth rate. .

[0003] Domestic manufacturers of light-weight coated paper mainly include Chenming, Gaotang, etc., and most of the raw materials used are chemical pulp. There is a certain gap with foreign products in terms of paper bulk, air permeability and other technical indicators. Th...

Examples

Embodiment

[0008] Embodiment: The coniferous wood BKP pulp, reed BKP pulp, and poplar APMP pulp that have been beaten to an appropriate degree of beating are adjusted to 600 kg of mixed pulp in a ratio of 28:35:37, and 67 kg of light calcium carbonate filler and other suitable materials are added. Chemical additives are prepared into paper material, which is formed by wire section, combined pressing, and pre-drying; film coating (coating amount 333kg), infrared drying, post-drying, soft calendering, finishing, coiling, and rewinding are obtained by users. 1000kg of lightweight coated printing paper is required. The concentration of the net pulp is 0.75%, the pH value is 8.2, and the degree of percussion is 55°SR; the coating process conditions: the viscosity of the paint is 1000mpa.s, the pH value is 8.5, the solid content: 55%, and the coating amount is 15g / m 2 The paper sheet dryness before sizing is 93%, and the paper sheet dryness after sizing is 68%. Soft calendering process conditi...