PE拉伸膜在日常生活中不仅可以代替其他的包装材料，并且对于易划伤的物品具有非常好的保护作用，同时还可以降低包装费用，因此非常受各行各业的欢迎。有很多人都不理解为什么如此薄薄的一张膜有这么大的抗刺穿能力呢？其实这里面的原因很简单，就让无锡PE缠绕包装膜为您解答：

Winding film can not only replace other packaging materials in daily life, but also have a very good protective effect on easily scratched items, but also reduce the packaging cost. Therefore, it is very popular in all walks of life. Many people don't understand why such a thin film has such great puncture resistance? In fact, the reason is very simple. Let Wuxi PE winding packaging film answer for you:

其实PE拉伸膜的抗穿刺性能与制造拉伸膜的工艺是密不可分的，相对于LLDPE/LDPE 树脂仍能供给更好的成果。作为一种多功能树脂，MPE 树脂可在多层吹膜出产线、流延膜出产线和单层吹膜出产 线上发明价值。贡献了可持续发展行。

In fact, the puncture resistance of PE stretch film is inseparable from the process of manufacturing stretch film. Compared with LLDPE / LDPE resin, it can still provide better results. As a multifunctional resin, MPE resin can be used in multi-layer blown film production line, cast film production line and single-layer blown film production line. Contributed to sustainable development.

前期LLDPE拉伸膜以吹膜为多，从单层发展到二层、三层；现在以流延法出产LLDPE拉伸膜为主，又因为拉伸膜的分子量分布窄，加工规模也窄，加工条件难以控 制，一般添加5%的LDPE，以下降熔体粘度，添加拉伸膜的平整度。

In the early stage, LLDPE stretch film was mostly blown film, developing from single layer to two and three layers; Now LLDPE stretch film is mainly produced by tape casting method. Because the molecular weight distribution of stretch film is narrow, the processing scale is also narrow, and the processing conditions are difficult to control, 5% LDPE is generally added to reduce the melt viscosity and the flatness of stretch film.

流延法出产具有厚薄均匀、透明度高等优点，可适用于高倍率预拉伸的要求。因为单层流延做不到单面粘，应用领域受到局限。所以还 是以三层共挤的结构较为志向。出产出的拉伸膜厚薄均匀，拉力好，不容易开裂。

Tape casting production has the advantages of uniform thickness and high transparency, which can be applied to the requirements of high magnification pre drawing. Because single-layer tape casting can not do single-sided adhesion, the application field is limited. Therefore, the three-layer co extrusion structure is more ambitious. The tensile film produced has uniform thickness, good tensile force and is not easy to crack.

其实，缠绕拉伸膜的拉伸延展性还是取决于缠绕拉伸膜制作材料中的茂金属，茂金属是一种能够使缠绕拉伸膜的抗穿刺性能提高的材料，它能是缠绕拉伸膜变得不仅延展性高而且还能具有十分强的抗穿刺能力。

In fact, the tensile ductility of the winding tensile film still depends on the metallocene in the manufacturing material of the winding tensile film. Metallocene is a material that can improve the puncture resistance of the winding tensile film. It can make the winding tensile film not only have high ductility, but also have very strong puncture resistance.

根据以上缘由，PE拉伸膜具有很强的拉伸力也不足为奇，但是市面上有很多的厂家，各有各的生产方法，同时在生产的过程中锁添加的茂金属量也不尽相同，所以在成品出来之后的抗刺穿的能力也不尽相同，因此我们在购买时一定要选择一个合适的厂家，这样才能保质保量，如果选择不合适，结果可想而知，肯定是不如人意。

According to the above reasons, it is not surprising that PE stretch film has strong tensile force, but there are many manufacturers in the market, each with their own production methods. At the same time, the amount of metallocene added to the lock in the production process is also different, so the puncture resistance of the finished product is also different. Therefore, we must choose a suitable manufacturer when purchasing, so as to ensure the quality and quantity. If the selection is not appropriate, The result can be imagined. It must be unsatisfactory.