Moulding of Plastic Pipe Fittings – Process Involved In It

Plastic pipes and fittings have got a lot of uses in our day-to-day life by acting as a transfer medium of drinking water, wastewater, chemicals, gases and even vacuum air systems etc. In general, a plastic pipe system involves pipes, valves, fittings and accessories connected properly for varied purposes. Plastic Pipe Fitting Mould uses two manufacturing processes such as 

•  Extrusion Moulding
  
•  Injection Molding

Here will discuss how to manufacture plastic pipe fitting mould using the extrusion molding process.

Material Handling:

The raw materials need stabilizers and other processing aids, to keep them ready for extrusion. Before sending into the moulding machines, compounds mixed with colour pigments to get the required color in the output. Thus, blending is many crucial stages of this material handling process.

Extrusion:

Here the raw materials allowed heating, melting, and mixing consistently to get the plastic parts of the particular shape. Usually, manufacturers follow the mixing temperature of around 120 degrees Celsius. Here all these things carried out in heat barrel device called extruder in which precision screws rotate the materials to get the desired shape. Now the pipes from the extruder passed through sizing sleeves. Now the pipe applied with pressure for attaining the desired size. Here Speed is a crucial factor in deciding the thickness of the output.

Best Quality Plastic Pipe Fitting Mould Manufacturer:

If you are looking for the best quality plastic pipe fitting mould manufacturer, then you should go for the professional manufacturer like HQ Mould having 40 years of experience in the plastic molding industry. For pipe fitting mould, they got two moulds such as Elbow mould and Lateral Tee mould.

Top-3 Injection Moulding Defects and How to Fix Them?

Injection Moulding is one type of moulding used in manufacturing automotive parts. It is not much easy to manufacture automotive parts moulding, as it may involve some defects which are difficult to fix them. Thus, manufacturers like HQ Mould will take care to fix such defects to avoid risks. Some of the defects affecting the output of automotive parts such as

·         Flow Lines

·         Sink Marks

·         Vacuum Voids

Flow Lines:

Flow lines defects caused due to the flow of molten plastics into the mould in varying speed by making some bends in the output. This condition may also occur when the molten plastic flows through the mould of having varying wall thickness.

Remedies:

·         It is necessary to have injection speeds and pressure applied to the molten plastics maintaining at an optimal level. In addition to this, check the cavities filled properly or not.

·         Round corners and locations avoided to change the direction of flow of molten plastics.

Sink Marks:

If the cooling method is not done properly for the molten plastic, then it will result in sink marks. Most of the automotive parts moulding manufacturer maintains cooling time to avoid sink marks.

Remedies:

Lower the molding temperature, raise the holding pressure and finally increase the holding time so that the molten plastics will get adequate cooling time.

Vacuum Voids:

They are some air pockets that get trapped nearer to the surface of an injection moulded prototype, due to uneven solidification.

Remedies:

·         Here too similar to sink marks, increase the holding pressure and holding time as well.

·         Checking the alignment of mould parts properly to avoid vacuum voids.