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…

Blown film extrusion:The manufacture of plastic film for products such as shopping bags and continuous sheeting is achieved using a blown film line. This process is the same as a regular extrusion process up until the die. There are three …

There are five possible zones in a thermoplastic screw. Since terminology is not standardized in the industry, different names may refer to these zones. Different types of polymer will have differing screw designs, some not incorporating a…

Extrusion is a manufacturing process used to make pipes, hoses, drinking straws, curtain tracks, rods, and fibre. The granules melt into a liquid which is forced through a die, forming a long ‘tube like’ shape. The shape of the die determi…

Plastic extrusion involves forcing melted plastic through a die into a shape with a fixed cross section. It’s an efficient way to produce many shapes, and is essential in both industrial and domestic product applications. Since the plastic…

Machine for PTFE tube;Ram extruding machine for PTFE tube;Using for Pre-sintering PTFE material;Suit for new PTFE material or Recycle PTFE material;Rangeof diameter PTFE Extrusion 20-500 mm, Heating zones 5 zones; Automatic. Tube Extruder …

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…

In the extrusion of plastics, the raw compound material is commonly in the form of nurdles (small beads, often called resin) that are gravity fed from a top mounted hopper into the barrel of the extruder. Additives such as colorants and UV…

Blown film extrusion This process is the same as a regular extrusion process up until the die. There are three main types of dies used in this process: annular (or crosshead), spider, and spiral. Annular dies are the simplest, and rely on …

Hot extrusion is a hot working process, which means it is done above the material’s recrystallization temperature to keep the material from work hardening and to make it easier to push the material through the die. Most hot extrusions are …

With the advent of industrial manufacturing, extrusion found application in food processing of instant foods and snacks, along with its already known uses in plastics and metal fabrication. The main role of extrusion was originally develop…

In the hydrostatic extrusion process the billet is completely surrounded by a pressurized liquid, except where the billet contacts the die. This process can be done hot, warm, or cold, however the temperature is limited by the stability of…

Extrusion is a process used to create objects of a fixed cross-sectional profile. A material is pushed through a die of the desired cross-section. The two main advantages of this process over other manufacturing processes are its ability t…

Extruders must operate dependably despite the high temperatures, plastic dust and, in many cases, space constraints that all put demands on electric motors. The question is: How can processors maximize the dependable operation of the elect…

Plastics extrusion is a high-volume manufacturing process in which raw plastic is melted and formed into a continuous profile. Extrusion produces items such as pipe/tubing, weatherstripping, fencing, deck railings, window frames, plastic f…

Most polymeric materials are extruded at least twice in their lifetime, rst through a pelletising die after the reactor and then for nal shaping.In simplest terms, screw extruders are polymer pumps with the capacity to melt the material wh…

PTFE tube molding machine Features:Save time and money;Advance designed;High output;Long-life;Tube OD Size range:20-500 mm;Production Per Hour in Kg:10+;Automatic;Computerized; PTFE tube molding machine is to extrude PTFE/UHMWPE Tubes. It …

Molding Machines are classified primarily by the type of driving systems they use: hydraulic, mechanical, electric, or hybrid. Hydraulic Hydraulic presses have historically been the only option available to molders until Nissei Plastic Ind…

The term extrusion reprocessing refers to the minimizing of the scrap generation and recapturing of the material value in most of the operations. In almost all types of extrusion processes, it is a common practice to grind up the scrap mat…

single screw:In single screw extruders, a screw mixer melts the entering plastic materials, pushes the material through the extruder, and forms the plastic into the desired shape. Twin screw:Twin screw extruders have two intermeshing screw…

Polymeric materials are widely extruded into various products, using sophisticated extrusion machines such as extruder and others. The finished products are used for consumer as well as industrial applications. This extrusion process is an…

Overjacketing and tubing extrusion are highly preferred processes for extruding a range of plastic materials. The overjacketing extrusion process is discussed here. In the process of wire coating, the bare wire or some bundles of jacketed …

Crosshead extrusion process is widely used to coat wires and cables with a polymer. The basic procedure includes pulling of the wire / cable to be coated at a uniform rate via a crosshead die, where it is covered with the molten plastic. T…

Vertical press machine for PTFE tube;Using for Pre-sintering PTFE material;Suit for new PTFE material or Recycle PTFE material;Rangeof diameter PTFE Extrusion 20-500 mm, Heating zones 5 zones; Automatic. Vertical press machiner is to extru…

Fluoropolymers have excellent, almost universal chemical resistance. They can be used both at high and very low temperatures (-260 to +260°C). They also possess outstanding resistance to weathering (UV-stability). Due to the low coefficien…

Single screw extrusion is one of the core operations in polymer processing and is also a key component in many other processing operations. The foremost goal of a single screw extrusion process is to build pressure in a polymer melt so tha…

Multi-hole ram extrusion is the process in which the raw material is pushed through a die having more than one hole. This process is highly productive for producing parts of smaller length and cross-section. For the given billet and final …

Fluoropolymers are produced from alkenes in which one or more hydrogen atoms have been replaced by fluorine. The most important members are polytetrafluoroethylene (PTFE), polychlorotrifluoroethylene (PCTFE), poly(vinyl fluoride) (PVF) and…

Injection moulding is a two step cyclical process: (a) melt generation by a rotating screw, and (b) filling of the mouldwith molten polymer by the forward ramming of the screw (called a reciprocating screw), followed by a very short packin…

Sunkoo PFG150 Single Screw Extruder Features:Vertical Ram Extruder for PTFE tube;Ram extruding machine for PTFE tube;Using for Pre-sintering PTFE material;Suit for new PTFE material or Recycle PTFE material;Rangeof diameter PTFE Extrusion …