Coated paper is a composite material that coats plastic particles onto the surface of paper through a tape casting machine, which can be oil resistant, waterproof, and heat-resistant. Different uses have different characteristics: when used for packaging hamburgers, take their oil resistant properties.
Coated paper process and advantages
The technical indicators of coated paper include the following: dry silicon coating amount, room temperature peeling force, aging peeling force, and residual adhesion rate. Dry silicon coating amount refers to the amount of release agent applied to the material, in grams per square meter.
Professional testing equipment is required to test the coating amount. The amount of silicone oil coating directly affects the peeling performance. A reliable manufacturer adjusts the peeling force by adjusting the chemical formula without reducing the amount of silicone oil coating. This requires a considerable amount of technical accumulation.
The peel force data obtained through standard testing methods at room temperature, in N/25mm, can be converted into several grams.
The peel strength measured after aging is generally slightly higher than the peel strength at room temperature.
Ordinary paper is composed of wooden fibers with strong water absorption, so everyone knows that paper is also afraid of moisture absorption. Instead, a coating machine is used to evenly coat PE plastic on the surface of the paper after hot melting, forming a very thin film. Due to hot melting on the surface of the paper, the paper and PE film can be firmly bonded and not easily separated. Moreover, the entire process does not use thermal chemical solvents, which is very environmentally friendly, And in terms of secondary processing and packaging in the later stage, there is no need for adhesive, and this layer of PE film is directly used for sealing under hot melting.
Coated paper is a composite material that coats plastic particles onto the surface of paper through a casting machine. The main feature of coated paper is that this composite material can be oil resistant, waterproof (relatively), and can be heat sealed.