News

Reasonable paper porosity is the core balance point of printing performance, air permeability and packaging protection performance. Excessive porosity leads to fast ink penetration, print pattern bleeding, poor surface shielding effect, and dust and moisture easy penetration into paper inner layer. Too small porosity makes paper airtight, poor glue permeability, difficult laminating bonding, hard hand feel and increased drying energy consumption. Most paper mills adjust porosity simply by changing pressing pressure, which damages fiber original length, reduces paper toughness, and cannot achieve precise graded porosity control for different paper types. Different application scenarios require matched fixed porosity: ink-printing paper needs moderate porosity for uniform ink absorption, food breathable packaging needs high stable porosity, confidential isolating paper needs low compact porosity. Shandong Ludao Energy Technology Co., Ltd. provides precise porosity customized optimization solutions. By adjusting fiber interweaving gaps, matching particle filler gradation and optimizing pressing auxiliary technology, we control paper internal pore size and distribution accurately. The technology realizes customized porosity for cultural paper, packaging paper and functional special paper, balances ink absorption, air permeability and structural strength, improves scene adaptability of paper products, and supports enterprises to develop customized differentiated paper materials.