PIR (Post Industrial Recycled material) refers to post industrial recycled materials. Here is a detailed introduction:

Definition:

PIR materials are materials that are recycled and processed from industrial waste generated during industrial production processes. These wastes are usually by products or scraps from manufacturing processes and are collected and treated through specific recycling technologies to be reused as raw materials in new production processes.

Types of materials:

Plastics: For example, waste plastic products from the plastic molding process, such as defective plastic parts, plastic scraps, etc., can be recycled and processed into recycled plastic pellets through processes such as sorting, cleaning, and melting, and then used to manufacture new plastic products.

Metals: Industrial metal scraps, such as those generated during metal processing and machining, like iron filings, aluminum shavings, and copper scraps, can be recycled and smelted to obtain recycled metals, which are widely used in the production of metal products such as automobiles, machinery, and electronics.

Paper: Waste paper from paper mills or printing factories, including waste paper rolls, cut off paper edges, and defective paper products, can be recycled and made into recycled paper through processes such as pulping and de inking, which is used for making various paper products.

Advantages:

Resource conservation: The use of PIR materials helps to reduce the consumption of virgin raw materials, which is of great significance for alleviating the shortage of natural resources. For example, recycling metal scraps can save a large amount of metal ores, and using recycled plastics can reduce the dependence on petroleum based raw materials.

Energy savings: Compared with the production of raw materials from scratch, recycling and processing PIR materials usually require less energy. For instance, recycling aluminum cans consumes only a fraction of the energy required to produce new aluminum from bauxite.

Environmental protection: By reducing the amount of industrial waste sent to landfills or incineration, the use of PIR materials helps to reduce environmental pollution and the emission of greenhouse gases. It also helps to save landfill space and reduce the potential pollution risks associated with waste disposal.

Challenges:

Quality control: Ensuring the quality and consistency of PIR materials can be challenging, as the quality of recycled materials may vary depending on the source and recycling process. Strict quality control measures and advanced recycling technologies are needed to ensure that PIR materials meet the required standards for use in different applications.

Sorting and separation: Industrial waste often contains a variety of materials and impurities, and efficient sorting and separation technologies are required to separate different types of materials for recycling. This requires a certain investment in equipment and technology to improve the sorting accuracy and efficiency.

Cost effectiveness: The cost of recycling and processing PIR materials can be relatively high, including the costs of collection, transportation, sorting, and processing. Balancing the cost and benefit of using PIR materials is a challenge that requires the support of relevant policies and the improvement of the recycling industry chain to achieve economies of scale and reduce costs.