2-Layer Stretch Film Machine

The 2-layer co-extrusion stretch film machine is an efficient and economical solution designed for producing standard-grade stretch film used in pallet wrapping, logistics packaging, and light-duty bundling applications. Built on AB dual-layer co-extrusion technology, this system combines two functional resin layers—typically a cling layer and a strength layer—into a single production process, delivering stable film quality with optimized material usage and reduced production cost.

Production Process

This machine adopts a dual-extruder AB co-extrusion structure, in which each extruder independently processes raw materials such as LLDPE, LDPE, or metallocene-based resins. Extruder A is typically used for the cling layer to provide strong surface adhesion, while Extruder B forms the strength layer to enhance mechanical performance. Each extrusion unit operates under precise temperature control, generally within a range of 200–230°C, ensuring complete resin plastication and stable melt flow. The molten materials are then combined through a co-extrusion die system to form a uniform two-layer AB film structure. After extrusion, the film enters a high-efficiency casting section and is rapidly cooled by a large-diameter chill roll, which is essential for achieving good transparency, a smooth surface finish, and consistent thickness. An online thickness measurement system continuously monitors the film gauge in real time and automatically adjusts die bolts or extrusion output based on feedback, ensuring stable product quality while minimizing material waste. The process is further supported by a traction and edge trimming system for smooth film transport and clean edges, followed by a dual-station automatic turret winder that enables continuous, non-stop roll changes, significantly improving production efficiency and supporting stable, high-volume operation.

Key Applications of 2-Layer Stretch Film

The films produced by this machine are widely used across multiple industries due to their balanced performance, cost efficiency, and versatility. In e-commerce warehousing, they are commonly used for small parcel wrapping and light pallet loads, offering good clarity and reliable protection. In agricultural applications, they are suitable for silage wrapping and hay bale sealing, providing strong air-tightness and UV resistance for outdoor storage conditions. In light industrial packaging, they are used for cartons, plastic components, and lightweight building materials, where consistent stretchability and break resistance are essential. In retail distribution and logistics centers, the film performs well for goods bundling and transport protection, offering stable adhesion without blocking issues.