Paper bowl is a common disposable tableware
Nov 02,2024
Paper bowl is a common disposable tableware, the following is a detailed introduction about it:
First, the material and production process
The main material
Paper bowls are generally made of paper pulp. Paper pulp comes from a wide range of sources, including wood, bamboo, reeds and other plant fibres. Among them, wood pulp is the more commonly used raw material, which can provide better strength and toughness. In addition, some chemicals, such as polyethylene (PE) coating, are added to the pulp in order to make the paper bowls water and oil resistant. This coating acts like a protective film that prevents liquids from penetrating the paper, allowing the paper bowl to hold liquid food such as soup and porridge.
Production process
The first step is the preparation of the pulp, in which the raw material (e.g. wood) is subjected to a series of physical and chemical treatments, such as steaming and grinding, to obtain a homogeneous suspension of pulp. The pulp is then formed into a bowl shape by mould forming. During the moulding process, techniques such as pressure and vacuum are used to make the pulp fit the shape of the mould, initially forming the contour of the paper bowl. Next, the paper bowl is dried to remove excess moisture and give it a certain strength. Finally, a coating process is carried out, in which a solution containing a waterproof substance such as polyethylene is uniformly applied to the inner surface of the paper bowl (sometimes some areas of the outer surface are also coated), and after drying and other processes, the paper bowl is finished.
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