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Two standards for quality judgment and testing of plastic cable ties

Characteristics and Quality

The most critical evaluation of plastic cable ties is the release force, which must be within the required range. Whether it is a broken strap, reverse teeth, or a cracked top of the head, the breaking method must be around the allowable value of the tensile strength. If some customers feel that the quality of the cable tie is not good, it is also partly related to the selected specifications and models. It is not advisable to stubbornly think that the quality of the cable tie is not good. Since the tensile strength of a single specification and model is low, when the required support for the application exceeds the specification, it cannot be guaranteed. Only by selecting and replacing products with higher tensile strength specifications and models, the cost may increase, and there is no way to do so. The matter. Perhaps the cost-effective zip ties have good flexibility and malleability, making them less prone to direct rupture in cross-section and less likely to become brittle. That way, we can also meet customer needs in more aspects by applying tensile strength regulations in various fields, which will exceed cost control.

Appearance and Quality

Ordinary plastic products will have defects such as edges, shortage of materials, restlessness, silver threads, bubbles, deformation, shrinkage rate, which can easily cause poor quality products. This kind of product is also easy to present on plastic cable ties, so it is necessary to pay attention to a detailed investigation of its appearance. Although some may not pose a threat to the application, they may still cause potential safety accidents.

The main point that should be emphasized is the important position of the plastic cable tie, that is, the quality of the part of the toothed belt and the tooth cavity on the top of the head. This is very important, so the toothed belt part should be carefully inspected and there should be no residual teeth. The top of the inner surface of the tooth cavity part of the board does not need to have stair like grinding tool offset marks, otherwise, there will be many sliding teeth that cannot be applied, difficult to cross situations, basically equivalent to waste, and cannot be applied.

This kind of problem requires careful attention, just like the simple edge condition. If the edge is very large, the intersecting tooth surface of the belt and the tooth cavity on the top of the head will not fit with high density, making it very easy for the teeth to loosen and slide.

The basic rule is that all handicrafts, without the requirement of uniqueness, are better in their original colors. It is an axiom. A good plastic cable tie should be crystal clear and transparent, even if the color tone is slightly yellowish, there should be no problem, and it should not be cloudy or dark. The quality of materials is closely related to the top priority of quality. After several high-temperature melting and wire cutting processes, the molecular formula of plastic will change, especially for the raw material PA66 used to make plastic cable ties. The excellent wear resistance and tensile properties of plastic make it suitable for a variety of applications in cable ties.

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