Pvc Plastic Shelf Dividers

 　　The yellowing of PVC profiles is mostly due to the presence of paste at the die. The reason is that the die runner is unreasonable or the local polishing in the runner is not good, and there is a stagnant area. The yellow line of PVC profile is mostly due to the presence of paste in the barrel. The main reason is that there is a dead corner between the sieve plates (or transition sleeves) and the material flow is not smooth. The yellow line is a vertical straight line on the PVC profile, the stagnant material is at the exit of the die; if the yellow line is not straight, it is mainly in the transition sleeve. Yellow lines appear when the formula and raw materials are unchanged, the reason should be found mainly from the mechanical structure, and the starting point of decomposition should be found and eliminated. If the reason cannot be found from the mechanical structure, it should be considered that there is a problem with the formula or process. The measures to avoid degradation include the following aspects:

• PVC Extrusions
  • PVC Foam Profile
  • PVC Profile
  • PVC Pipes
  • PVC Tube
  • PVC Divider
• PC Extrusions
• ABS HDPE PP Extrusions
• Injection Molding

　　Strictly control the technical indicators of raw materials and use qualified raw materials;

　　Formulate reasonable molding process conditions, under which PVC materials are not easy to degrade;

　　The molding equipment and mold should be well-structured, and the dead corners or gaps that may exist on the contact surface between the equipment and the material should be eliminated; the runner should be streamlined and the length is appropriate;

　　The heating device should be improved, the sensitivity of the temperature display device and the efficiency of the cooling system should be improved.

The heating device should be improved, the sensitivity of the temperature display device and the efficiency of the cooling system should be improved.

The characteristics of HDPE pipe and PE pipe

 　The full name of PE is Polyethylene, which is the simplest polymer organic compound. It is the most widely used polymer material in the world today. It is polymerized by ethylene. According to the density, it is divided into high density polyethylene, medium density polyethylene and low density polyethylene. Low-density polyethylene is relatively soft, and it is mostly used for high-pressure polymerization; high-density polyethylene has the characteristics of rigidity, hardness and mechanical strength, and it is mostly used for low-pressure polymerization. High-density polyethylene can be used as containers, pipes, and high-frequency electrical insulating materials for radar and television.

　　Specifications: Implement GB/T13663-2000 "Polyethylene (PE) Pipes for Water Supply"; the drinking water pipe cleaning function conforms to the GB/T17219 rules; it is produced with PE100 grade materials and is generally used for pressure water transportation.

　　Features of HDPE pipe (PE pipe)PVC Foam Profile

　　1. Outstanding cleaning function: no heavy metal salt stabilizer is added during PE pipe processing, the raw materials are non-toxic, no scaling layer, and no bacteria multiply, and the secondary pollution of urban drinking water is well treated.

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　　2. Outstanding corrosion resistance: Except for a few strong oxidants, it can withstand the erosion of a variety of chemical media; no electrochemical corrosion.

　　3. Long service life: PE pipes can be used safely for more than 50 years under rated temperature and pressure.

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　　4. Good impact resistance: PE pipe has good resistance and high impact resistance, and heavy objects directly pass through the pipeline, which will not cause the pipeline to break.

　　5. Reliable connection function: The strength of the PE pipe's hot melt or electric melt interface is higher than that of the pipe body, and the joint will not be disconnected due to soil movement or live load.

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　　6. Outstanding construction function: the pipeline is light in weight, the welding process is simple, the construction is convenient, and the construction cost is low.

Precautions for the paint design of PVC foam board

 　PVC foam board has a smooth surface, high hardness, and is not easy to be scratched. It is often used in various industrial buildings and household productions. So what should be paid attention to when designing the paint surface of PVC foam board?

　　1. You can use the engraving machine to shape according to the design drawing, and then choose the surface to be pasted with Meinai board or paint; but the hollow foam board needs to pay attention, if the surface is uneven, you can only use vacuum overmolding. , The material should be 2mm thick PVC board.

　　2. Bending molding is only suitable for solid foamed boards, hollow foamed boards are not applicable; the processing method is to use upper and lower molds, cover the surface of the wooden mold with aluminum plates and heat the solid foamed boards to a plasticizing temperature of 70~90℃ In the meantime, the surface of the foamed board is extruded directly by the upper and lower molds without any change.

　　3. Self-adhesive PVC can provide wood grains with different patterns on the surface according to requirements during extrusion manufacturing, which can save unnecessary processing procedures.

　　4. The surface of PVC foam board can be painted, and the general category can be divided into general baking varnish, piano baking varnish, ceramic baking varnish according to different processing methods; anti-UV ingredients will be added during piano baking varnish processing to avoid surface color changes; In terms of surface hardness, ceramic baking varnish has the advantage of anti-scratch.