Introduction to the production process characteristics of the anti-collision barrel
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Anti-collision barrels produced by wholesale manufacturers have the following characteristics: (1) The base layer is the main body of the multi-layer co-extrusion structure, with a large thickness, which is mainly used to ensure the strength, stiffness and dimensional stability of the product. The base polymer also plays a regular interval when the mesh is used. HMWHDPE is a new material. The thickness is generally set to 30% to 50% of the total thickness.
(2) The functional layer, also known as the anodic infiltration layer, is the key layer of the multi-layer co-extrusion structure with high resistance to infiltration. It can not only prevent the effective components of the fuel from penetrating outside the fuel tank, but also prevent the outside gas from penetrating into the fuel tank in the form of gas distribution. The functional layer polymer is mainly EVOH. Due to the high price of EVOH, the barrier performance of EVOH is very high in the case of very thin shoes. Therefore, it should be designed as thin as possible under the premise of meeting the requirements of barrier performance. The functional layer is generally 1% to 5% of the total thickness.
(3) Adhesive layer It mainly solves the problem of poor mutual adhesion between the base layer and the functional layer. The adhesion between the layers in the multi-layer fuel tank wall is a difficult point and a key point. Poor adhesion will lead to interlayer peeling, which in turn affects the strength and seepage resistance of the plastic fuel tank. The adhesive layer polymer is generally modified with HDPE. Because the price of the adhesive is generally higher, its thickness should be as small as possible under the premise of meeting the performance requirements. The adhesive layer is generally two layers, accounting for 1% to 4% of the total thickness.
(4) During the process of co-extrusion blow molding of the fuel tank, the recycled material layer will produce some flash and waste products, which usually will not affect the performance of the fuel tank after recycling, so it can be recycled and reused. Can reduce costs. The recycled material of a single polymer tank can be crushed and fed into the extruder in a certain proportion. The recycled material of the multi-layer co-extrusion blowing plastic fuel tank has a variety of plastics, which is not conducive to direct separation into single-component utilization. Therefore, a recycled material layer is added to the composite co-extrusion structure to solve the problem of reuse of recycled materials. The material used for the reclaimed material layer is mainly a mixture of reclaimed material and HMWHOPE new material. The thickness of the recycled material layer can reach 30%~50% of the total thickness. M2
(5) The decorative layer is also called the outer base layer. Except to have a certain strength. In addition to stiffness, adding color masterbatch can provide different external colors for fuel tanks; adding additives such as anti-ultraviolet agents can improve the external adaptability of fuel tanks. The decorative polymer is mainly HMWHDPE new material and color masterbatch. The thickness of this layer is generally set to be about 15% of the total thickness.
The line pole anti-collision barrel absorbs the impact force through the buffer layer, avoiding the impact force directly acting on the pole, and forming a good protective effect on the pole. Avoid damage to the pole. The main body of the line pole anti-collision barrel is a semi-circular structure, and the top is a semi-conical structure. The purpose of using a circular and semi-conical shape is the same as that of a circular tree section, that is, to reduce the center of gravity, reduce damage, and have stronger Mechanical strength, etc. The purpose of the buffer plate set inside the pole anti-collision bucket is a semi-circular structure to warn the pier structure to more tightly ring the pole, and the protection effect is more obvious. And eliminate the inconvenience caused by the outer diameter of the pole to the installation. The line pole anti-collision bucket adopts the fixed design without ground angle, and does not need to excavate and construct the original road surface. The construction is simple and convenient.