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Radiation Cross-Linked heat shrinkable sleeves/tapes are primarily applied for field girth weld anticorrosion coating, anticorrosive and thermal-insulated pipes, and waterproof joints for plastic water supply and drainage pipes.
The process flow of Huashida heat shrinkable sleeve extrusion line:
First, the PE back film extrusion line manufactures PE films tailored to client specifications.
Second, the films are transported to a certified irradiation facility for precise radiation crosslinking, ensuring optimal fire resistance and tensile strength.
Third, the irradiated films enter the heat-shrinkable sleeve adhesive coating line, where they undergo:Double stretching to achieve the desired shrinkage rate;
Adhesive lamination using a proprietary hot-melt formula, extruded via a specialized reactor and bonded to the substrate under controlled pressure.The final product exhibits exceptional peel strength and dimensional stability.
Heat Shrinkable Sleeve extrusion line Composition
1. PE back film extrusion Line
-Adopt advanced technology
-Guarantee steady operation
-High automation level, cutting down labor costs
-Superior anti-corrosion quality, in line with international standards
-Supply full completed production solution: design, installation, commissioning,training
-Share you 389 sets of production experience from all the world
-Having 9 professional senior engineers
-Maintain a high-end plastic machinery equipment expert workstation in China
Product application
3LPE Heat Shrinkable Sleeves are widely applicable for corrosion protection of welded joints in:
Oil & natural gas transmission steel pipeline
Urban gas pipeline seams
Heating steel pipeline connections
Water supply/drainage pipe interfaces
Additionally, they are suitable for municipal sewage systems and other industrial infrastructure.
installation
When heat is applied to the sleeve wrapped around a joint, the adhesive melts and becomes a liquid while the sleeve backing begins to shrink. The radial shrinking forces of the sleeve squeezes the fluid adhesive into all the pipe surface irregularities, while the sleeve conforms tightly to the joint profile. On cooling, the adhesive solidifies, creating a tough bond to the pipe and the coating.
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