corrosion protective heat shrinkable sleeve is mainly used in field girth weld coating, Anticorrosive thermal insulated pipe; waterproof pipe joints of plastic water supplying and drainage water pipe.

The process flow of Huashida heat shrinkable sleeve extrusion line:
First step, the PE back film extrusion line produces PE film as clients' requirements,and second sent the PE back film to professional irradiation company to do radiation crosslinking treatment with right radiation does, so that the sleeve has Good fire resistance and tensile strength;Third step put the irradiated back film into the heat shrinkable sleeve adhesive coating production line for adhesive coating. In this process, the heat shrinkable sleeve substrate is first stretched twice to ensure that the heat shrinkable sleeve has a good shrinkage rate, and then a unique formula of hot melt adhesive is extruded by a professional reaction vessel and bonded with the back film.The finished product is peeled off.high strength.

Heat Shrinkable Sleeve extrusion line Composition

1. PE back film extrusion Line
--- Single screw extruder
--- Die head
--- Three Calender
--- Roll temperature controlling system
--- Cooling rack
--- Hauling off
--- Rewinding machine

2. Adhesive Mixing and Coating Line
--- Unpowered uncoil device
--- Reactor
--- Adhesive coating system
--- Cooling water tank
--- Haul off
--- Coiler platform.

3. For three layer fiber reinforced heat shrink sleeve, we need to add below equipments
--- Fiber uncoiling device
--- Fiber heating device
--- Fiber flattening device

Finished Heat shrinkable sleeve show

Heat shrinkable sleeve usage

Cross-linked Heat Shrinkable Belt Production Line (model SRSG-800 )

RS-800 Basic film extrusion line (RS-800)
1	SJ-65×30 single screw Extruder	1 Set
2	T-Die mold	1 Set
3	3-Calender Roller	1 Set
4	Roll temperature control system	1 Set
5	Cooling Bracket	1 Set
6	Haul-Off Unit	1 Set
7	Coiler	1 Set

TJ-700 adhesive mixing and coating line (TJ-700)
1	Unpowered uncoil device	1 Set
2	Basic film drawing mill	1 Set
3	reactor	1 Set
4	Adhesive coating mold group	1 Set
5	Cooling water tank	1 Set
6	Haul-Off Unit	1 Set
7	Coiler platform	1 Set

-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
-Having a high-end plastic machinery equipment expert workstation in China
Feature
Fast shrinkage speed, good waterproof performance, good anti-corrosive performance, long service life, convenient transportation and fast construction.

Installation
When heat is applied to the sleeve wrapped around a joint, the adhesive melts into a liquid state while the sleeve backing starts to shrink. The radial shrinking force of the sleeve presses the fluid adhesive into all the uneven surfaces of the pipe, as the sleeve closely conforms to the joint's shape. Upon cooling, the adhesive solidifies, forming a strong bond between the pipe and the coating.