Recycled paper is made from waste paper as raw material, which is shredded, decolored and pulpable through various processes. 80% of its raw materials come from recycled waste paper, so it is known as environmentally friendly paper with low energy consumption and light pollution. There are many kinds of urban waste paper, and different types of waste paper are used as raw materials to make different recycled copy paper and recycled packaging paper. Generally, it can be divided into two categories: one is low-grade paper such as linerboard and toilet paper; the other is paper used for books, newspapers, magazines, copy paper, printing paper, postcards and exercise books, which are cultural papers. The environmental pollution caused by recycled paper pulping process to air and water quality is greatly reduced compared with ordinary paper. The paper industry has a large amount of waste water and is widely distributed, making it one of the most polluted industries in our country. To produce 1 ton of pulp requires 100 tons (wood pulp) to 400 tons (straw pulp) of water, and most of this sewage is discharged. The aerobic organic matter emitted by our country’s paper industry accounts for more than 30% of the total emissions. The black liquor pollution produced by papermaking is the most serious, with 10 tons of black liquor discharged for every ton of pulp produced. Waste water from papermaking contains a lot of carbohydrates, proteins, oils and lignins. These substances are easy to decompose under the action of microorganisms and consume a lot of oxygen during the decomposition process, which reduces the oxygen content in the water and affects the growth of fish and other aquatic organisms. After the dissolved oxygen in the water is exhausted, the water is in an anaerobic state. Under the action of anaerobic bacteria, organic matter produces unpleasant and toxic gases such as hydrogen sulfide, ammonia and mercaptans, which worsen the water quality. In the manufacturing process of recycled paper, wastewater discharge can be reduced by 50%. In particular, several processes in the early stage of papermaking can be omitted, and the most serious black liquor will not be produced, thus greatly reducing.
The fiber for papermaking is collected from plants, most of which are from forests. In recent years, global environmental awareness has increased. Therefore, the paper industry strives to study environmentally friendly papermaking methods. The environmentally friendly paper involves the following conditions:
- No toxic chemical treatment, such as chlorine-free bleaching and dyeing of pulp
- Recycled from recycled fibers, called recycled paper
- Use fibers from well managed forests, such as FSC or PEFC certified chains
- Paper mill obtains international environmental certification, such as ISO14000, ECO mark or Green Label
- Low carbon made and Carbon neutral
- Use naturally occurring pigment
When we use eco-friendly paper, please pay attention to whether the product description on the packaging meets one or more of the above requirements.
The most common eco-friendly paper can be divided into recycled paper, chlorine-free paper, eco-friendly recycled paper, eco-friendly stone paper, etc.
All paper, regardless of its material or production process, can be regarded as eco-friendly paper as long as it can help protect the environment. However, the eco-friendly paper is not equal to recycled paper. Paper produced from wood pulp and straw pulp is also called eco-friendly paper. Recycled paper is produced from waste paper and does not have any brighteners, fluorescents or other chemicals added, so the recycled paper is a natural yellowish color. The difference between eco-friendly paper and recycled paper is the difference in raw materials.
Recycled paper does not add any brighteners, fluorescents and other chemicals, so it shows the beauty of the paper’s natural color, slightly yellowish. Because it is not reflective, it is actually more conducive to protecting our eyes. Europe and Japan are more than a decade ago, recycled paper has been regularly used as office and study paper.
Eco-friendly paper is not actually recycled paper; the EU international standard is recycled paper only. Environmentally friendly paper is just a general term. The biggest difference between environmentally friendly paper and recycled paper is that the raw materials are different. Recycled paper uses waste paper for production, while environmentally friendly paper using wood pulp as raw material for production.