LanzhouFour-layer co-extruded high-adhesion film production line

The next-generation, high-precision, four-layer co-extruded self-adhesive mold, jointly developed with Taiwan’s Hongtai, combines high adhesion, exceptional transparency, advanced technology, and energy efficiency, representing a new product in the field of high-adhesion protective films.

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LanzhouProtective film production line

Phone: 400-888-8888

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Product Description

Main uses

This extrusion line has been designed to meet customers’ demands for high‑quality, high‑viscosity blown‑film equipment. It incorporates a new‑generation barrel and screw, a high‑precision, stable‑flow imported air ring, a Taiwan‑made four‑layer stacked co‑extrusion internal‑cooling die, a horizontal upper traction rotary system, an IBC internal‑cooling system, fully automatic center‑, surface‑, and gap‑winding units, as well as a computer‑based centralized control system—among other advanced technologies. The system offers outstanding advantages, including high production efficiency, superior product quality, a high degree of automation, and simplified operation, making it ideally suited for the manufacture of premium self‑adhesive films, protective film substrates, PE composite soft‑tube base films (such as toothpaste tubes), high‑end composite printing substrates, heat‑shrink packaging films, and other functional films.

Performance Features

Our company has incorporated advanced foreign technologies and, in light of the unique characteristics of self-adhesive film products, jointly developed with Taiwan’s Hongtai a next-generation, high-precision, four-layer co-extruded self-adhesive die. This innovative solution combines high adhesion, exceptional transparency, cutting-edge technology, and energy efficiency, representing a new generation of high‑adhesion protective films. In addition, we offer a fully automatic, multi‑functional rewinding machine that supports three winding modes—surface friction winding, surface center winding, and center‑driven winding—providing versatile compatibility with various plastic films. It also features fly‑knife cutting, automatic roll changing and unwinding, and automatic length counting.
The PLC control system can operate in multiple winding modes, automatically performing cutting, reel changing, and unwinding operations, thereby significantly reducing worker fatigue and production costs while boosting productivity. The system features a user-friendly human–machine interface, with a touch screen for displaying and setting various parameters, including temperature, screw speed, tension, winding pressure, film roll diameter, and length, further enhancing its level of automation.
Our independently developed new‑type SEBS screw boasts high production capacity and excellent multi‑stage plasticization performance. The air ring and mold are manufactured using advanced machining processes, resulting in a highly polished surface and producing films with superior uniformity and transparency.

Model	SJ-GM×4-BL1800 IBC
Number of floors Lay	4(A/B/C/D)
Maximum folding diameter of the film The biggest film folding diameter	mm	1650
Film thickness Film thickness	mm	0.02-0.15
Production volume Output	kg/h	220
Applicable raw materials The material suitable for	LLDPE, LDPE, HDPE, EVA, EAA, mLLDPE, POE, SEBS, and other adhesive resins, etc. LLDPE, LDPE, HDPE, EVA, EAA, mLLDPE, POE, SEBS and other viscous resins
Screw diameter Screw diameter	mm	A	Φ45
		B	Φ75
		C	Φ75
		D	Φ55
L/D ratio of the screw Screw the ratio length	L/D	32:1
Main motor power The main motor power	KW	A	22
		B	45
		C	45
		D	30
Rotational speed Rotational speed	min/r	7-10
Rotation method Rotation mode	360° horizontal swing rotation
Traction speed Traction speed	m/min	5-60
Winding method Winding mode	Fully automatic center/surface/gap winding
Total power Total power	KW	180
External dimensions (length × width × height) Shape dimension (L×W×H)	mm	11000×8500×10500