Development from waste paper to recycled paper
Recycled paper, commonly known as waste paper, is a kind of paper made from waste paper as the main raw material and processed through multiple processes. The production process of recycled paper has become an environmentally friendly production method. Its production process is simpler, more economical, and more environmentally friendly than traditional manufacturing methods, and its resource utilization rate is higher.
The production process of recycled paper includes the following steps: collection, sorting, screening, pulping, papermaking, processing and other steps.
Recycled paper classification
Generally, it can be divided into two categories: one is low-grade paper such as hanging board paper and toilet paper; the other is paper for books, newspapers, magazines, copy paper, printing paper, postcards and exercise books. Currently, paperboard and cartons; packaging paper bags; newsprint; sanitary and other daily paper…
Quality monitoring
The quality of waste paper recycling directly affects the production quality of pulp and paper, which may lead to quality problems or safety hazards in the use of products. Comprehensive testing of waste paper to recycled paper is an essential link. Ensure that product quality meets relevant national standards and regulatory requirements so that consumer products can be used with confidence.
The main test items are as follows:
1. Appearance test: paper smoothness tester; whiteness tester; thickness meter, etc.
2. Moisture permeability test: absorbency tester; moisture meter; air permeability and tensile strength tester, etc.
3. Performance test: bursting strength; tear strength; tensile strength…
