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What are the differences between extruders used for producing plastic sheets, plates, and films?

Time：

2018-01-15

Extruders can be used to produce three types of plastic products: sheets, plates, and films. In fact, these three are essentially the same product category, and there are no strict, formal criteria for distinguishing among them. So how are these products typically classified? At Hebei Shuangda Rubber & Plastics Machinery Co., Ltd., the production process for plastic extrusion lines is fundamentally the same across all three. Generally speaking, in the domestic plastics industry, sheet products with a thickness of less than 0.25 mm or 0.2 mm are referred to as plastic films, while products ranging from 0.2 to 1 mm in thickness are called sheets—soft sheets fall within the 0.2–2 mm range, and rigid sheets span 0.17–0.8 mm.

Extruders can be used to produce three types of plastic products: sheets, plates, and films. In fact, these three are essentially the same product; there are no strict, formal criteria for distinguishing among them. So how are these three categories differentiated? At Hebei Shuangda Rubber & Plastics Machinery Co., Ltd., the production process flow for plastic extrusion lines is essentially the same across all three.

In general, practitioners in the domestic plastics industry refer to sheet‑like products with a thickness of less than 0.25 mm or 0.2 mm as plastic films; products with a thickness between 0.2 and 1 mm are classified as sheets (with soft sheets ranging from 0.2 to 2 mm and rigid sheets from 0.17 to 0.8 mm); and products thicker than 1 mm are called plastic boards (where those between 1 and 10 mm may be termed thin boards, and those between 12 and 25 mm may be referred to as thick boards). This classification system is primarily intended to facilitate the differentiation of such plastic products; however, since the criteria are not entirely standardized, misunderstandings may arise in practical applications. Therefore, when engaging in detailed discussions, it remains necessary to distinguish these materials based on their specific types and properties.

These three types differ significantly in their applications; among them, plastic film is commonly used for mulch films, greenhouses, and similar purposes. Domestically, this product enjoys high consumption, and the equipment used to produce it has reached a mature technological stage, with substantial production capacity. China has now placed the development of technologies for processing and recycling plastic film in a position of considerable importance. If needed, please feel free to consult our company’s waste‑plastic recycling equipment.

The application ranges of plastic boards and sheets often overlap. The plastics commonly used in their production include polyethylene, polypropylene, and polyvinyl chloride. After being manufactured on extrusion lines, these products can serve as a variety of structural and packaging materials, such as components for chemical‑resistant containers, insulating electrical panels and sheets, flooring, partition boards, and more.

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