Plastic Extruded Pipe Archives

Tag: Plastic Extruded Pipe

Dalilai Plastics is a Chinese manufacturer of plastic extruded pipes, providing a comprehensive range of products for numerous applications. Their products are manufactured with the highest quality engineering practices and standards to ensure durability and reliability. Their offerings consist of different types of plastic extruded pipes that come in a variety of shapes, sizes, and materials, enabling customers to find the perfect solution for their needs. Additionally, their experienced team works closely with customers to design customized extruded pipelines that match their specifications. With years of experience in this industry, Dalilai Plastics is committed to providing excellent customer service and top–quality products for a variety of applications.

What Is a Plastic Extrusion Profile?

Plastic extrusion profiles are long, slender tubes, usually constructed of a strong, flexible plastic material, that can be used in a variety of industrial applications. They are produced through a carefully managed process of exporting plastic granules, molten materials through a clamp-type extruder. The process of plastic profile extrusion, in its most essential terms, is the forming of a molten material into a desired shape.

Plastic Extruded Profiles

The extrusion process requires a number of components, including an extruder, a die, an extruder throat, a long-length exit section, and a coolant system. Together, they create a long tube with a preset number of holes, or profiles, that are cut into the piece. These profiles enable added connectivity and strength when they are applied to a product.

Different Types of Plastics Used in Profile Extrusion

The type of plastic being extruded will determine the characteristics of the plastic profile. Different resins, additives, and colorants can all be combined to yield different results when extruded. From highly flexible materials to rigid polymeric substrates, a number of plastics can be used to produce different shapes, sizes, and hand-feel for any application.

Flexible Plastics Plastics such as Low Density Polyethylene (LDPE) are often used in applications such as door seals and utility sealing. LDPE is an ideal solution for these materials, as it resists cracking and tearing due to its flexibility.

Rigid Plastics Polypropylene (PP) is used to create hard, strong plastic extrusions. It does not shrink or swell and it holds its shape. This type of material is typically used as an electrical insulator and is found in cables and wires.

Other plastics such as Polyvinyl Chloride (PVC), Acetal (POM), Polycarbonate (PC), and High Density Polyethylene (HDPE) can all be extruded for many different uses.

How Plastic Extrusion Profile Can Be Used

Plastic extrusion profiles are used in a wide variety of industries. From automotive to construction, practically any product can benefit from the use of this cost-effective process. Common uses for plastic extrusion profiles include:

Structural frames

Structural frames are used to support and enhance other products, including furniture, shelving, and building components. Structural frames are often used in the construction industry, as they can be lightweight and easily shaped into more complicated designs.

Architectural finishes

Plastic profiles are widely used in architectural finishes, such as decorative trim, façade materials, and molding. Plastic extrusion profiles can help to add style and detail to an existing product.

Housings, enclosures, and covers

Plastic profile extrusion is also used in commercial and industrial products, including electrical housings, covers, and enclosures. These products are often produced from materials such as PVC and ABS plastic.

Plastic extrusion is also a great choice for parts that require higher levels of mechanical performance and strength. For example, plastic extrusion is used to create gaskets, seals, and automotive parts.

The Benefits of Plastic Profile Extrusion

Plastic profile extrusion is a highly flexible, cost-effective process that has long been favored for its versatility. This process offers a number of advantages over the manufacture of other materials. Some of the most significant benefits include:

Cost-effectiveness- By relying on molds and dies, this process is less expensive than fabricating or machining products. It also offers greater cost savings when producing long-run products.

Versatility- Through the use of shapes and profiles, any product can be formed.

Strength- Plastic extrusion profile products are strong and durable.

Ease of Use- The extrusion process is relatively simple, and parts can be easily customized using the appropriate molds and dies.

Choose Quality Custom Plastic Extrusion Profile from Dalilai Plastics

At Dalilai Plastics, we specialize in custom plastic extrusion profiles. Our experienced team of engineers will work with you to design a product that meets your exact requirements. We use only the highest quality materials and cutting-edge production methods to ensure that your product meets any specifications. We are committed to delivering quality, value and service with every order. Contact us today to see how we can help with your next project!

Defects and treatment methods in extrusion processing:

1, plastic scorch

Plastic scorch is a common quality defect in plastic extrusion process. Its attention is as follows: the temperature is super high; the die has a large amount of smoke, strong irritating odor, and there is a bursting sound when it is severe; the extruded plastic layer has coke particles; There are continuous bubbles at the joints; the main reasons for the injection are:

1) The temperature control is too high to reach the thermal degradation temperature of the plastic;

2) The screw has not been cleaned for a long time, and the accumulated scorch is extruded with the molten plastic;

3) Heating or downtime is too long, so that the plastic in the barrel is decomposed by heat for a long time;

4) The temperature control instrument is out of control or misaligned, causing pyrolysis;

5) The extruder cooling system is not opened, causing the material to shear friction and overheat.

Therefore, during the extrusion process, it should be checked whether the heating and cooling system work normally; the setting of the extrusion temperature should be determined according to the process requirements and the rotation speed of the screw; the temperature is controlled reasonably, and the extrusion system is cleaned regularly.

2, poor plasticization of the extrudate

In the above, the plasticization problem has been mentioned in the temperature control requirements. The general plasticization failure is mainly as follows: the extrusion layer has a suede-like sample; the plastic surface is black, dull, and has small cracks; the extrusion layer is combined There are obvious seams at the glue; the main reasons for this are:

1) The temperature control is too low, especially the nose part;

2) Other plastic particles of different properties are mixed in the insulating or sheathing material;

3) The screw is too fast to plastic, and the plastic is not completely plasticized;

4) There are quality problems in the plastic itself.

For the above reasons, attention should be paid to the rationality of extrusion temperature control; the quality of the materials to be used should be confirmed; the extrusion speed should not be pursued blindly; the storage of raw materials should be strengthened, especially in the plastic drying process; To enhance extrusion pressure and screw backflow.

3. There are pores or bubbles in the section of the extrusion layer, which are mainly caused by:

1) The temperature control is too high (especially the feed section);

2) The plastic is damp and has moisture;

3) Parking for a long time, the plastic is not excluded;

4) The natural environment has high humidity;

5) The water or vapor content in the core is too high.

For the above reasons, the temperature of each section of the screw should be reasonably controlled; the materials used should be pre-dried in advance; the requirements of strict process operation should be improved, and the ability to judge the plasticization degree of plastics should be improved; attention should be paid to the production environment and storage conditions of materials.

In actual production, in addition to the above-mentioned defects and causes, there are problems such as the wiring problem, the vertical overlap width problem, and the shape of the bamboo joint. We will observe and summarize more in the extrusion processing, and grasp the main and essence of the problem, we will solve it and make the cable quality level better.