A highly durable microwaveable pp coated paper

Abstract

The application relates to a microwave-resistant PP coated paper with high durability, which includes a reinforced composite paper core, and the outer layers on both sides of the reinforced composite paper core are respectively provided with a coating layer, the coating layer is a PP coating layer, PP The coating layer is prepared from raw materials containing the following parts by weight: 120-150 parts of polypropylene, 8-12 parts of hydrophobic fumed silica, 0.1-0.15 parts of maleic anhydride grafted polypropylene, and 0.4-0.6 parts of thermal oxidant part, anti-ultraviolet agent 0.1‑0.3 part. The reinforced composite paper core includes a first core layer and a second core layer. The first core layer includes a first base material layer, a first inner support layer fixedly connected to the inner side of the first base material layer, and the second core layer includes a second core layer. The base material layer, the second inner support layer fixedly connected to the side of the second base material layer close to the first base material layer, the first inner support layer and the second inner support layer are bonded and pressed together. The coated paper of the present application has the advantages of high microwave heat resistance, high paper product strength and good durability.

Description

technical field [0001] The present application relates to the technical field of coated paper, in particular to a highly durable microwaveable PP coated paper. Background technique [0002] Coated paper refers to the composite paper formed by coating plastic particles on the surface of paper through a casting machine. Its main feature is that it has certain oil-proof and waterproof properties and can be heat-sealed. Currently commercially available paper containers such as disposable paper cups, paper bowls, and paper lunch boxes are also made of coated paper, mainly low-density polyethylene coated paper. [0003] On the one hand, although low-density polyethylene coated paper also has good oil and water resistance, it can be used for packaging and storing food. However, when microwave heating is required for food, the polyethylene coating of this type of paper container is prone to thermal melting, resulting in leakage of the paper container; Or set a polymer coating laye...

AI Technical Summary

Problems solved by technology

However, when microwave heating of food is required, the polyethylene coating of this type of paper container is prone to thermal melting, resulting in leakage of the paper container; Or set a polymer coating layer on the outside of the base paper layer, and then press to form the finished paper of coating paper

[0004] In view of the related technologies mentioned above, the inventor believes that the coating layer of the current coated paper products has poor heat resistance, and the design structure of the single-layer substrate or base paper is likely to reduce the strength and poor durability of the finished paper. To be further improved

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