2022年塑料薄膜回收利用情况

塑料薄膜是塑料制品最常见的形式。塑料薄膜的种类虽多，但使用寿命普遍较短。它也是回收的主要类型之一。接下来，我们将根据塑料薄膜的用途和形式来介绍塑料薄膜的种类和应用。

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Agricultural film

The agricultural film mainly includes mulch film and greenhouse film. The ground film is mainly PE film, and the shed mold includes PE, /EVA, and PVC film. When recycling, we should distinguish PE and PVC films. Because agricultural films are generally dirty, and often contain soil, sand, grassroots, nails, iron wires, etc. First, we should remove impurities in the film. The main method of recycling is granulation. To get high-quality plastic particles, we need to use PE film recycling line. The plastic particles can be reproduced into plastic products, such as pots, barrels, etc.

Application of plastic Pellets

PE recycled pellets made by PE film granulator can also be used to produce the agricultural film. We can also use it to make fertilizer packing bags, garbage bags, agricultural renewable water pipes, fences, tree supports, basins, buckets, garbage cans, geotechnical materials, etc.

此外，PVC粒料还是制造包装袋、农用水管、鞋底等的原料。

Packaging film

包装膜的材质有PE、PVC、PP、EVA、PVDC、PA、PET以及各种复合膜。单层包装膜经分选、清洗后，可直接制成农膜等塑料制品，也可造粒后制成各种产品。复合薄膜以及塑料、纸、铝箔等材料制成的薄膜的回收更为复杂。多层塑料复合薄膜有pe/pp、PE/EVA/PE、pp/PVC等。

在回收之前，我们应该首先将不同的材料分开。这时候很多厂家就采用溶剂分离的方法来做。分离设备为镀铬空心桶，电加热。筒体内装有一个带叶片的空心圆柱体。加料筒和空心筒以相反方向旋转。纸塑混合物在机筒内受热塑料熔化后从机筒下部排出。最后，空心圆筒内的空气带走废气。

PET film

In the plastic industry, PET is the main material for making the film and plastic bottles. After being crushed and cleaned by a plastic crusher, the film can be used for packing, decoration, capacitor insulation, etc. Pet is widely used in fibers. Leftovers from PET film and fiber production plants can be used to make polyester/epoxy powder coatings. Generally, these leftovers have a relative molecular weight of about 20000 and a melting point of more than 260 degrees. They form a single linear pet. PET industrial waste can also be used to make hot melt adhesives for the bonding of flexible materials, such as cloth, leather, paper, plastic, aluminum, and other materials.