As an intermediate product in the papermaking industry, base paper serves as a fundamental raw material within the supply chain. Depending on end-use and processing methods, it is primarily applied in sectors such as packaging and specialty paper.
In the specialty paper industry, the annual demand for glassine base paper exceeds one million tons; it is processed via silicone coating to serve as the substrate for logistics labels. Following the localization of aseptic liquid packaging base paper, domestic products can replace imports for the aseptic packaging of dairy products; the manufacturing process involves six stages, including lamination with aluminum foil. Reports from 2022 indicate that domestic enterprises have established complete production lines for aseptic liquid food packaging base paper, achieving localization of the product.
When processing corrugated base paper into cartons, a single-facer machine is used to bond the paper into A, B, or C-type corrugated structures; the typical basis weight range for the base paper is 140–280 g/m². In the production of molded pulp products, base paper is disintegrated into pulp and formed via vacuum suction to create eco-friendly packaging materials.
Toilet tissue base paper serves as the substrate for manufacturing household paper products such as toilet rolls and facial tissues. Its production and performance must comply with the relevant regulations of the national standard GB/T 20810, "Toilet Tissue (Including Toilet Tissue Base Paper)."
Food packaging base paper is a substrate used for packaging that comes into direct contact with food; it is subject to stringent requirements regarding safety and physical properties.