THE PROPERTIES AND ADVANTAGES OF PTFE

Polytetrafluoroethylene or PTFE (more commonly known as Teflon) is a particularly versatile ivory-white and opaque plastic fluoropolymer; it is made by the free-radical polymerisation of many tetrafluoroethene molecules, and is suitable fo…

PTFE A Miracle Material Evolves

Since its discovery nearly 80 years ago, polytetrafluoroethylene (PTFE), has become one of the world’s most versatile and useful materials. Originally used for military applications, it can now be found in many other applications, such as …

Will PTFE be the next 3D printable material?

The range of available materials is one of the key hurdles to adoption for industrial 3D printing. 3D printing is being rapidly adopted by product manufacturers all around the world, but it still can't compete with many other manufacturing…

POLYCHLOROTRIFLUOROETHYLENE (PCTFE OR PTFCE) PROPERTIES & APPLICATIONS

Polychlorotrifluoroethylene (PCTFE or PTFCE) is a thermoplastic chlorofluoropolymer with the molecular formula (CF2CClF)n, where nis the number of monomer units in the polymer molecule. It is similar to polytetrafluoroethene (PTFE), except…

Moldmaker & Molding Process

A moldmaker (mouldmaker in British English) or molder is a skilled trades worker who makes molds for use in metalworking and other manufacturing industries. It is sometimes regarded as a variety of the trade of the toolmaker. Moldmakers ar…

Plastic forming machine

A plastic forming machine, or plastic molding machine, is developed on the basis of rubber machinery and metal die-casting machine. Since the polymer injection molding process and molding equipment in the 1870s, as an industry, plastic for…

Plastics Extrusion Products & Type

Plastics extrusion commonly uses plastic chips or pellets, which are usually dried, to drive out moisture, in a hopper before going to the feed screw. The polymer resin is heated to molten state by a combination of heating elements and she…

Engineering plastic properties & list

Engineering plastics are a group of plastic materials that have better mechanical and/or thermal properties than the more widely used commodity plastics (such as polystyrene, PVC, polypropylene and polyethylene). Being more expensive, engi…

Screw theory

Screw theory is the algebra and calculus of pairs of vectors, such as forces and moments and angular and linear velocity, that arise in the kinematics and dynamics of rigid bodies. The mathematical framework was developed by Sir Robert Sta…

Machinist

A machinist is a person who machines using hand tools and machine tools to prototype, fabricate or make modifications to a part that is made of metal, plastics, or wood. Related occupational titles A traditional machinist is one who can: o…

Skiving machine

Skiving or scarfing machines cut material off in slices, usually metal, but also leather or laminates. The process is used instead of rolling the material to shape when the material must not be work hardened, or must not shed minute sliver…

Thermoforming Engineering & Type

Thermoforming has benefited from applications of engineering technology, although the basic forming process is very similar to what was invented many years ago. Microprocessor and computer controls on more modern machinery allow for greatl…

Plastic Processing Type

Type:injection moulding, plastics extrusion, stretch-blow molding, thermoforming, compression molding, calendering, transfer molding, laminating, fiberglass molding, pultrusion, filament winding, vacuum forming, rotational molding Injectio…

7 fillers to enhance the performance of virgin PTFE sealing

PTFE (Polytetrafluoroethylene) has become a commonly used material in sealing applications where other materials do not meet temperature, chemical compatibility, friction, or wear requirements. Many users are unaware that “fillers” may be …

Basic Types of Plastic Pipes

Solid wall pipe Extruded pipes consisting of one layer of a homogeneous matrix of thermoplastic material which is ready for use in a pipeline. Structured wall pipe Structured-wall pipes and fittings are products which have an optimized des…

How ordinary items are made using plastic injection molding

Increasing use of thermoplastics in manufacturing took place during the middle of the past century, coming on especially strong during the war years, 1940-45, where many applications substituted the use of plastics for metal. Even in the s…

How to Avoid Injection Molding Defects

When working with any manufacturing process, a number of defects unique to that process commonly occur. This is true across many processes and industries, including plastic injection molding and high volume injection molding. Resin- and Ad…

Plastic Injection Molding Terms

Parting line – A line on a part formed when the two sides of the mold come together. Polymer – A substance that has a molecular structure consisting chiefly or entirely of a large number of similar units bonded together, e.g., many synthet…

Questions to Consider Before Getting an Injection Molding Quote

Injection molding is the most common plastic molding process and is used to create a wide variety of complex parts of different size and shape. Whether it’s an overcap for a water bottle or a vinyl window part being manufactured, injection…

Blow vs Compression vs Extrusion vs Injection Molding Machine

Blow molding – well suited for hollow objects, like bottles The process follows the basic steps found in glass blowing. A parison (heated plastic mass, generally a tube) is inflated by air. The air pushes the plastic against the mold to fo…

Where to Source Plastic Molding Machine

Automatic molding, a semi-automated form of compression molding, is the process Sunkoo uses for the manufacture of medium-volume to large-volume net molded and near net molded PTFE components. The automatic molding process requires dedicat…

Plastic Machinery Manufacturer

Sunkoo’s enormous strength comes from a wonderful combination of its highly efficient and professional management and a dedicated workforce of qualified and experienced engineers and technicians and marketing personnel, which in turn, lead…

Plastic Extrusion Operator

Extrusion operators, sometimes called extruding and drawing machine operators, control and monitor machines that shape thermoplastic materials. They work in a number of manufacturing industries, including general plastics manufacturing, au…

Extrusion Methods

By plasticizing, there are dry extrusion and wet extrusion processes and by pressurizing there are continuous and intermittent extrusion processes Continuous production yields a high efficiency, simple operation for a wide range of applica…

Plastic Extrusion vs. Injection Molding

For industrial manufacturers, the methods of injection molding and/or extrusion are specified to make products with different shapes and sizes. The molten die-casting method is the basis of the injection molding process. The injection-mold…

Plastic Extrusion Process and Re-extruded

Plastic extrusion is a process for converting plastic materials from solid to liquid states and reconstituting them as finished components. First, plastic pellets are gravity fed from a hopper into a jacketed screw. As the screw turns abou…

Plastic Extrusion Basic Information – Supplies & Process & Design

Whether it’s one hundred yards of pipe-tubing or a thousand Crazy Straws, plastic extrusion is in frequent use in today’s plastics industry because it’s readily available and easy to work with. The plastic extrusion process involves meltin…

How plastic products are formed?

Discover the basic methods of processing thermoplastic and thermoset materials: Plastics are ubiquitous, appearing in the most cutting edge technologies as well as in the most mundane items. These polymers—chainlike molecules—are so widely…

Screw Design in Plastic Extrusion

The basic extrusion screw has three distinct parts, each engineered to do a specific task. The feed section is in the rear of the screw, where plastic pellets are gravity fed from above and conveyed forward. The length to diameter ratio of…

What are the control zones inside an extruder?

One important thing to note is that all components have bores or channels drilled inside them for cooling purposes. This indicates that the temperature rise inside the extruder is formidable and sufficient measures must be taken to prevent…