It is also very convenient for the construction of the heat shrinkable sleeve with good anti-corrosion effect. We only need to grasp a few points that need to be paid attention to. However, we may also encounter some problems when constructing it. For example, the edge is easy to protrude during construction, which affects our effect very much, so let's introduce the reasons for the phenomenon together below.
Edge protrusion refers to the height of the overlapping edge of the patch layer and the anti-corrosion layer of the pipe body and the height of the patch location on the weld protrusion. For heat shrinkable sleeves, it also includes the overall protrusion of the thermal self-overlap, which is an inherent defect of this unbuckle form. For the heat shrinkable sleeve patching layer, this welding defect that is not related to the patching operation itself is very harmful, because as long as the pipeline moves longitudinally, the protruding edge of the patching layer that is perpendicular to the longitudinal direction of the pipeline will easily be scratched. It is more likely to cause problems when it is damaged or scratched, or even part of it falls off.
Close to not sticky. This kind of defect occurs when the polyethylene layer is tightly attached to the surface of the pipe, but does not stick to the surface of the pipe. It is easy to appear at the bottom of the pipe, and it is also easy to produce such defects in the lower semicircle of the patch. The polyethylene layer on a certain part may be able to adhere to the surface of the pipe tightly without first shrinking the polyethylene layer on other parts. The glue inside has not melted, and it looks like the glue has melted completely. Non-sticky defects can not be found by hitting with a mallet. They generally occur in a larger area. Here, the patch layer does not have any resistance to shearing and peeling, but the impact performance will not be greatly affected.
The above is the introduction of the reasons for the protruding edges of the heat shrinkable sleeve during construction. The reason for this phenomenon is that the position of the text is too high during construction, so we should pay attention to this point in the future construction. , The other is about its stickiness, we must ensure that our products have good adhesion, we can do better operation and construction.