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.

Red Pvc Separator Shelf Divider

 　Polyvinyl chloride PVC is an economical and general-purpose thermoplastic polymer, which is widely used in the construction and construction industries to produce door and window profiles, pipes, wire and cable insulation, and medical equipment. It is the world's three largest thermoplastic materials together with polyethylene and polypropylene. Due to the poor molding performance of the processed PVC profile, such as high melt viscosity, poor fluidity, poor thermal stability, easy thermal decomposition, poor aging resistance, easy to become brittle, hard, crack, and poor toughness, The cold resistance is not good, so PVC modification is generally required to make up for the above shortcomings.

　　Physical modification: Physical modification is to improve its performance by adding various additives or filling, blending, and strengthening.

　　1. For example, adding ACR to improve the molding and processing performance of PVC materials; adding internal and external lubricants or polyethylene wax to improve the viscosity and fluidity of the materials; adding thermal stabilizers to improve the thermal stability of the materials during molding and reduce their Decomposition temperature; adding antioxidants and anti-ultraviolet agents to improve the anti-aging life of PVC profile products; adding plasticizers to improve the plasticizing performance of materials and increase the softness of products. Filling modification is to improve certain properties by adding inorganic or organic fillers.

　　2. Such as adding wood powder filler to reduce the specific gravity of PVC products, close to wood; adding metal powder, such as copper powder, aluminum powder to improve the conductivity of the product; adding iron oxide magnetic powder to improve the magnetic properties of the product; adding calcium carbide to improve the product Hardness, while reducing material costs; adding red mud to improve the heat resistance and light aging resistance of the product, while reducing material costs.

　　3. For example, other polymers that can be blended and modified with PVC include acrylonitrile-butadiene-styrene copolymer (ABS), methyl methacrylate-butadiene-styrene copolymer (MBS), poly Acrylate, chlorinated polyethylene (CPE), ethylene-vinyl acetate copolymer (EVA), nitrile rubber, ethylene propylene rubber, chlorinated polyvinyl chloride (CPVC), dioctyl maleate, etc.

　　4. In addition, PVC modification methods such as reinforced modification, crosslinking modification, foaming modification, and radiation modification can also be used to improve the performance of PVC. For example, use mica powder with a large aspect ratio for reinforcement; use dicumyl peroxide (DCP) for cross-linking modification to increase strength; use azodicarbonamide foaming agent to reduce the specific gravity of PVC products, and use cobalt radiation for Irradiate, increase intensity, etc.

　　Quality control

　　The Quality Policy is established and structured to provide ISO 9001:2008 compliant quality management. Our quality management system is designed to provide satisfaction for our customers with defect-free products that conform to their requirements and are delivered on time.

　　We communicate our commitment to quality within the organization through the provision of resources, leadership, and quality objectives. By monitoring and reviewing the quality management system we will ensure its continual improvement and effectiveness.

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

Causes of yellowing of PVC foam board surface

 Solution: reduce the processing temperature, if it does not improve, adjust the formula to increase stability, appropriately increase stabilizers and lubricants, and change them one by one. First increase the stabilizer to see the effect, and then adjust the lubrication to balance the lubrication, so it is easy to find out quickly Where the problem lies, solve the problem as quickly as possible.

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  Polycarbonate Tube Square White Diffuser rectangular PC Tube Use For LED

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Features of PVC-U pipe

 　1. Light weight, convenient handling and unloading: PVC pipe is light in material, convenient in handling, loading and unloading, and construction, saving labor.

　　2. Excellent chemical resistance: PVC pipes have excellent acid, alkali and corrosion resistance, which is very suitable for the chemical industry.

　　3. Small resistance: The inner wall of the PVC pipe is smooth, and the resistance is small, and its friction coefficient is only 0.009.

　　4. Good electrical insulation: PVC pipes have excellent electrical insulation properties and are suitable for protecting wires and cables.

http://upvcextrusion.com/pvc-extrusions/

　　5. Simple construction: The combined construction of PVC pipes and pipe fittings is quick and quick, and the construction cost is low.

ABS High Heel Shoe Molded Plastic Injection Parts

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  pvc Corner Protector profiles

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  Pvc Square Tube

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  PVC extrusion profile for glass door and window frame

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  Black PVC Rigid Extrusion Profiles Foam PVC Profile Strips

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  Custom Multi-purpose PVC Tube Hollow

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Features of PVC drainage pipe

 1. The surface hardness and tensile strength of the pipe are excellent, and the safety factor of the pipe is high.

　　2. The linear expansion coefficient of the pipeline is small, 0.07mm/℃, and the amount of deformation affected by the temperature is small. The thermal conductivity and modulus of elasticity are small, and the anti-freezing performance is better than that of cast iron drain pipes.

　　3. The pipes and pipe fittings can be connected by bonding. The construction method is simple, the operation is convenient, and the installation work efficiency is high.

　　4. Good aging resistance, and the normal service life can reach more than 50 years.

　　5. The pipeline has excellent corrosion resistance to inorganic acids, alkalis, and salts, and is suitable for industrial sewage discharge and transportation.

　　6. The pipe friction coefficient is small, the water flow is smooth, not easy to be blocked, and the maintenance workload is small.

　　7. The material has high oxygen index and self-extinguishing.

Plastic PVC Window Profile	PVC Extrusions	胡小波		2021-07-30 13:39:20	2021-07-30 13:39:20		修改 | 详情 | 图片管理 | 添加相似
2		PVC Extrusion Profile Strips	PVC Extrusions	胡小波		2021-07-30 11:34:24	2021-07-30 11:35:54		修改 | 详情 | 图片管理 | 添加相似
3		Pvc Hollow Square Tube	PVC Extrusions	胡小波		2021-07-30 09:36:03	2021-07-30 09:36:03		修改 | 详情 | 图片管理 | 添加相似
4		Plastic Corner Protector	PVC Extrusions	胡小波		2021-07-30 09:25:08	2021-07-30 09:25:08		修改 | 详情 | 图片管理 | 添加相似
5		PVC Corner Protector

The mixing technology and feeding sequence of PVC low-foaming raw materials

 　The preparation of pvc low-foaming dry blend is carried out on a standard heating and cooling mixing unit (this unit is a combination of a high-speed mixer and a cooling mixing unit). The mixing principle of the high-speed mixer is that the materials are rapidly scattered along the container wall under the impetus of the high-speed rotating stirring blade, and fall from the center of the container to form a vortex motion to achieve the effect of rapid mixing and uniformity. During high-speed

PVC Extrusions stirring, when the materials are mixed, friction between the materials will be generated, that is, frictional heat will be generated at the same time. There will also be friction

http://upvcextrusion.com/ between the materials and the stirring blade and the container wall, and frictional heat will also be generated, as well as the heating source outside the container. Under the joint action, various

Injection Molding

PC Extrusions additives can quickly infiltrate into the PVC resin and form a semi-gelled dry mixture. The principle of the cooling mixer is to pass cooling water through the outer jacket of the container, and under the low-speed stirring of the paddle, the dry mixture of about 110-120℃ is rapidly cooled to below 45℃ to prevent the hot material from agglomerating, decomposing and foaming. , The mixed dry blend discharged from the mixer should be sieved to remove agglomerates and molten particles for the next step of extruding and granulating, or directly extruding low-foaming products.

Six common senses of PVC foam board processing

 The processing characteristics of pvc foam board are roughly the same as that of wood processing. It is only necessary to avoid scorching caused by excessively high working temperature. In addition, the chips generated after processing can be collected, recycled, and remanufactured to reduce costs. There is one thing to pay attention to when cutting the hollow foam board. Because the hollow space is 23mm, it is easy to assemble. If you don’t pay attention to cutting, most of them are overlapped and cut at one time, resulting in different spacing; you can use the tool It is positioned by the way of bolts, which is convenient for processing. Now we understand a little bit of common sense about the surface processing of PVC foam board.

1. The engraving machine can be used to shape according to the design drawing, and the surface is to be pasted with Minai board or baking varnish; but the hollow foam board should be noted that if the surface is uneven, only the vacuum overmolding method can be used and the material is 2 mm pvc board.

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　　2. Bending molding is only suitable for solid foamed board, hollow foamed board is 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 board 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 the 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.

　　5. Then there is the common processing method. The surface is pasted with crystal plate (usually single-sided colored acrylic plate), Minai plate and Minai paper. In the part of the edge banding, the general processing is mostly automatic edge banding machine. The automatic edge banding machine is divided into two types: roller type and crawler type. However, if hollow foaming is used, it is recommended to use a color similar to that of the surface coating material to avoid obvious color difference when the paper is pasted. .

　　6. Drilling can be beneficial to the crawler edge banding machine, which is less likely to cause unevenness on the surface after edge banding. The pressure adjustment is also very important; the color of the foam board is also directly processed by the NC machine. The material itself can reduce the density and increase the air content of the foam board according to the needs of the application, to achieve the effect of heat insulation and sound insulation and cost reduction. For example, the density of 15mm foam board reduces its own weight and the same volume of 10mm foam board. The weight is the same. At present, some manufacturers have used the foaming board to use vacuum forming for table top molding or large machine cover, but there is a disadvantage when applied to the table top molding, which is that the surface is not well resistant to mold and is easy to wear.