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%.

尼龍NN、聚酯EP保送帶：掩蓋層：拉伸強(qiáng)度不小于15Mpa，扯斷伸長(zhǎng)度不小于350%，磨耗量≤200mm3,層間粘合強(qiáng)度縱向試樣均勻值布層間不小于4.5N/mm，掩蓋膠與布層間不小于3.2N/mm,全厚度縱向扯斷伸長(zhǎng)率不小于10%，全厚度縱向參考力伸長(zhǎng)率不大于4%，掩蓋膠采用橡塑共混，骨架國標(biāo)級(jí)別拉力強(qiáng)度系數(shù)，能夠搭接成環(huán)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.

保送帶產(chǎn)品分類一切的保送帶必需接成環(huán)形才干運(yùn)用，所以保送帶接頭的好壞直接影響保送帶的運(yùn)用壽命和保送線能否平穩(wěn)順暢地運(yùn)轉(zhuǎn)。普通保送帶接頭常用辦法有機(jī)械接頭、冷粘接接頭、熱硫化接頭號(hào)。保送帶機(jī)械接頭法：普通是指運(yùn)用皮帶扣接頭，這種接頭辦法便當(dāng)便利，也比擬經(jīng)濟(jì)，但是接頭的效率低，容易損壞，對(duì)保送帶產(chǎn)品的運(yùn)用壽命有一定影響。

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整芯阻燃抗靜電保送帶接頭中，普通8級(jí)帶以下的產(chǎn)品都采用這種接頭辦法。保送帶冷粘接頭法：即采用冷粘粘合劑來停止接頭。這種接頭方法比機(jī)械接頭的效率高，也比擬經(jīng)濟(jì)，應(yīng)該可以有比擬好的接頭效果，但是從理論來看，由于工藝條件比擬難控制，另外粘合劑的質(zhì)量對(duì)接頭的影響十分大，所以不是很穩(wěn)定。保送帶熱硫化接頭法：理論證明是理想的一種接頭辦法，可以保證高的接頭效率，同時(shí)也十分穩(wěn)定，接頭壽命也很長(zhǎng)，容易控制。但是存在工藝費(fèi)事、費(fèi)用高、接頭時(shí)間長(zhǎng)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.