Single wall heat shrink tubing and ordinary heat shrink tubing are two common protective materials for wires and cables, which have some differences in structure, performance, and application fields. This article will provide a detailed introduction to the differences between single wall heat shrink tubes and ordinary heat shrink tubes, including material characteristics, shape, installation method, and application range.
Structure and material characteristics:
Single wall heat shrink tubing: Single wall heat shrink tubing is made of a special polyolefin material with a high shrinkage rate. It is usually a single-layer structure, without adhesive or adhesive layer, and a layer of Hot-melt adhesive is coated on the inner wall. During heating, Hot-melt adhesive will melt and form a sealing layer, providing good waterproof, moisture-proof and insulation properties.
Ordinary heat shrink tubing: Ordinary heat shrink tubing is made of materials such as polyvinyl chloride (PVC), polyethylene (PE), or polytetrafluoroethylene (PTFE). The ordinary heat shrinkable tube usually adopts a double-layer or multi-layer structure. The inner layer has Hot-melt adhesive or adhesive, and the outer layer is the material itself. When heated, Hot-melt adhesive or adhesive will melt and seal, providing certain protection and insulation effects.
Shape and size:
Single wall heat shrink tubing: The common shape of single wall heat shrink tubing is cylindrical, and different diameters and wall thicknesses can be provided as needed. Single wall heat shrink tubing has a high shrinkage rate and can cover wires and cables to the maximum extent, protecting joints and connecting parts.
Ordinary heat shrink tubing: Ordinary heat shrink tubing can be in different shapes such as cylindrical, rectangular, or flat, providing a variety of sizes and specifications to choose from. The shrinkage rate of ordinary heat shrink tubing is relatively low, usually around 50%, so it is necessary to choose a suitable size to cover the required protection.
Installation method:
Single wall heat shrinkable tube: the installation of single wall heat shrinkable tube is relatively simple. Generally, the heat shrinkable tube is simply sheathed at the end of the wire and cable to be protected, and heat sources (such as Heat gun or flame) are applied to shrink it and closely fit the cable surface to form a protective layer.
Ordinary heat shrinkable tube: the installation of ordinary heat shrinkable tube is relatively complicated. It needs to cover the heat shrinkable tube on the wire and cable first, then apply heat source to shrink it, and use Hot-melt adhesive or adhesive to seal it, so as to ensure the firmness and insulation of the overall structure.
Application scope:
Single wall heat shrink tubing: Single wall heat shrink tubing is typically used for insulation protection of low-voltage cables and wires, providing good waterproof, moisture-proof, and insulation performance. It is widely used in household appliances, communication equipment, automotive electronics, and aerospace fields.
Ordinary heat shrink tubing: Ordinary heat shrink tubing is not only used for cable insulation protection, but also for cable connection, cable identification, cable bundling, and mechanical protection. It is widely used in the power industry, electronic equipment manufacturing, petrochemical industry, transportation and other fields.
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