High-durability PP coated paper capable of being used by microwaves

Abstract

The invention relates to high-durability PP coated paper capable of being used by microwaves, wherein the high-durability PP coated paper comprises a reinforced composite paper core, coating layers are respectively arranged on outer layers of two sides of the reinforced composite paper core, and the coating layers are PP coating layers. The PP coating layer is prepared from the following raw materials in parts by weight: 120 to 150 parts of polypropylene, 8 to 12 parts of hydrophobic fumed silica, 0.1 to 0.15 part of maleic anhydride grafted polypropylene, 0.4 to 0.6 part of a heat-resistant oxidant and 0.1 to 0.3 part of an anti-ultraviolet agent. The reinforced composite paper core comprises a first core layer and a second core layer; the first core layer comprises a first base material layer and a first inner supporting layer fixedly connected to the inner side face of the first base material layer, and the second core layer comprises a second base material layer and a second inner supporting layer fixedly connected to the side face, close to the first base material layer, of the second base material layer; and the first inner supporting layer and the second inner supporting layer are connected in a bonding and pressing mode. The coated paper provided by the invention has the advantages of high microwave heat resistance, high paper 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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