(a) The poor adhesion between PVC slurry and chemical fiber, the two can not become a mechanical whole, and the stress dispersion is poor, which is the fundamental reason for the structural damage and short service life of the whole core conveyor belt. However, if the PVC paste can be plasticized to form a complete continuous homogeneous phase, the stress-strain coordination between the skeleton and the plastic will be better, and the strength and fatigue life of the conveyor belt will also be improved. For example, the frame of flame retardant whole core conveyor made by Fenner company in England is basically complete after two or three years, while the framework of some small and medium-sized manufacturers in China is loose and damaged in about a year. The inherent deficiencies in the revision make the production technology and technology of the whole core conveyor subtle. Using the same raw materials, the same technology and equipment, the same quality products may not be produced.

(b)PVC硬度大，柔软性差，几乎没有缓冲作用，整芯输送带耐冲击性差，容易发生外伤性损伤。

(b) PVC has high hardness, poor flexibility, almost no buffering effect, poor impact resistance of the whole core conveyor belt, and easy to cause traumatic damage.

(c)由于带芯的织造结构比较松弛、捻度低、变形能力强的棉纱占有一定的空间，所以即使经过成形拉伸，带芯整体的张力也难以一致，塑化后的带芯松弛是不可避免的。这是在一段时间使用了很多整芯传送带之后产生荷叶边状松弛的主要原因，也是传送带容易弯曲的原因。当然，在传送带上出现荷叶边缘的根本原因是化学纤维自身具有的高增长率。

(c) Because the weaving structure of the core is relatively loose, the cotton yarn with low twist and strong deformation capacity occupies a certain space, so even after forming and stretching, the overall tension of the core is difficult to be consistent, and the relaxation of the core after plasticization is inevitable. This is the main reason for the lotus leaf edge relaxation after using many whole core conveyor belts for a period of time, and it is also the reason that the conveyor belt is easy to bend. Of course, the root cause of lotus leaf edge on conveyor belt is the high growth rate of chemical fiber itself.

(d)PVC的伸长率与橡胶大不相同，用橡胶保护输送带时(PVG输送带)，如果目标橡胶过厚(超过3mm)，则在粘接界面上形成明显的90剥离性应力集中，容易导致目标橡胶的脱落。

(d) The elongation of PVC is quite different from that of rubber. If the target rubber is too thick (more than 3 mm) when the rubber is used to protect the conveyor belt (PVG conveyor belt), the obvious 90 peel stress concentration will be formed on the bonding interface, which is easy to cause the target rubber to fall off.

总之，PVC阻燃整芯输送机虽然技术指标能满足煤矿井下使用的要求，但疲劳寿命和磨损寿命都很短，不仅提高了使用成本，而且给生产带来了不稳定的因素。层叠帆布输送带在结构和材料上能够避免正好整芯输送带的上述不足，例如帆布织造时能够实现张紧度的均匀和低的应力伸长和变形，粘贴后能够柔软地抵抗冲击，目标与芯的粘接良好，目标的厚度也能够自由调整，输送带整体这些本质优点使层叠帆布输送带具有长寿命、稳定、可靠性。如能很好地解决帆布阻燃问题，叠层帆布输送带将代替整芯输送带在煤矿井下普遍应用。

In a word, although the technical indicators of PVC flame retardant core conveyor can meet the requirements of underground coal mine, its fatigue life and wear life are very short, which not only improves the use cost, but also brings unstable factors to the production. The structure and material of laminated canvas conveyor belt can avoid the above shortcomings of the whole core conveyor belt, such as uniform tension and low stress elongation and deformation during weaving, soft resistance to impact after pasting, good adhesion between target and core, and free adjustment of target thickness. These essential advantages of the whole conveyor belt make the laminated canvas conveyor belt have the advantages of uniform tension, low stress elongation and deformation, soft resistance to impact after pasting, good adhesion between target and core, and free adjustment of target thickness Long life, stability and reliability. If the flame retardant problem of canvas can be well solved, laminated canvas conveyor belt will be widely used in coal mine instead of whole core conveyor belt.

有了切菜机输送带上面的小总结，希望对广大客户有所帮助，如果有什么不理解的或者寻求帮助的请点击我们的网站：https://www.huafengxiangsu.com 或者来电咨询，我们会尽全力为您解决

With the small summary on the conveyor belt of the vegetable cutter, we hope to help our customers. If you have any questions that you don't understand or ask for help, please click our website: https://www.huafengxiangsu.com  Or call consultation, we will try our best to solve it for you