Common delivery belt: covering layer: tensile strength not less than 15 Mpa, elongation at break not less than 350%, wear less than 200 mm 3; uniform value of interlaminar bonding strength between layers is not less than 3.2 N/mm; covering rubber and cloth layers are not less than 2.1 N/mm; elongation at break at full thickness is not less than 10%; elongation at longitudinal reference force at full thickness is not more than 1.5%.

尼龙NN、聚酯EP保送带：掩盖层：拉伸强度不小于15Mpa，扯断伸长度不小于350%，磨耗量≤200mm3,层间粘合强度纵向试样均匀值布层间不小于4.5N/mm，掩盖胶与布层间不小于3.2N/mm,全厚度纵向扯断伸长率不小于10%，全厚度纵向参考力伸长率不大于4%，掩盖胶采用橡塑共混，骨架国标级别拉力强度系数，能够搭接成环形。

Nylon NN and polyester EP belts: covering layer: tensile strength not less than 15 Mpa, elongation at break not less than 350%, wear less than 200 mm 3, uniform value of interlayer bonding strength between layers of samples not less than 4.5 N/mm, covering rubber and cloth layer not less than 3.2 N/mm, elongation at break at full thickness of not less than 10%, elongation at full thickness of longitudinal reference force not more than 4%, covering rubber and plastic blends are used. Tensile strength coefficient of skeleton national standard level can be lapped into a ring.

保送带产品分类一切的保送带必需接成环形才干运用，所以保送带接头的好坏直接影响保送带的运用寿命和保送线能否平稳顺畅地运转。普通保送带接头常用办法有机械接头、冷粘接接头、热硫化接头号。保送带机械接头法：普通是指运用皮带扣接头，这种接头办法便当便利，也比拟经济，但是接头的效率低，容易损坏，对保送带产品的运用寿命有一定影响。

All the belts of the product classification must be connected into a ring to use, so the quality of the joint of the belts directly affects the service life of the belts and the smooth operation of the delivery lines. Common methods of delivery belt joints include mechanical joints, cold bonded joints and hot vulcanized joints. Belt mechanical joint method: generally refers to the use of belt buckle joint, which is convenient and economical, but the efficiency of the joint is low and easy to damage, which has a certain impact on the service life of the belt products.

PVC和PVG整芯阻燃抗静电保送带接头中，普通8级带以下的产品都采用这种接头办法。保送带冷粘接头法：即采用冷粘粘合剂来停止接头。这种接头方法比机械接头的效率高，也比拟经济，应该可以有比拟好的接头效果，但是从理论来看，由于工艺条件比拟难控制，另外粘合剂的质量对接头的影响十分大，所以不是很稳定。保送带热硫化接头法：理论证明是理想的一种接头办法，可以保证高的接头效率，同时也十分稳定，接头寿命也很长，容易控制。但是存在工艺费事、费用高、接头时间长等缺陷。

In the joints of PVC and PVG whole core flame retardant and antistatic belts, the common products below grade 8 belts adopt this joint method. Cold bonded joint with delivery belt: that is, cold bonded adhesive is used to stop the joint. This kind of joint method is more efficient and economical than mechanical joint. It should have better joint effect. But theoretically, it is not very stable because the process conditions are difficult to control and the quality of adhesives has a great influence on the joint. Escort hot vulcanized joint method: The theory proves to be the most ideal joint method, which can ensure high joint efficiency, but also very stable, long service life, easy to control. However, there are some shortcomings, such as technics trouble, high cost and long joint time.