custom plastic injection molding company

Topworks Plastics Injection Molding company is one of extensive  custom plastic  molding companies ,an innovator in custom plastic injection molding . We focu on Plastic Injection Molding, Warehousing Plastic Mold Making and Mold Design & development. Regardless if for short runs or for full 24 hrs producing – our business has the Plastic Injection Molding know-how specific to satisfy!

We can  offer practically all dimension of shot , weight of injection part  and corresponding plastic mold,the custom injection molding arrange from 1g to 4000g and they include : household ware,farming,vehicle and health related sections .By utilising injection moulding equipment, interface with experienced engineering assistance, we could supply and sustain the highest quality producing standards .

To obtain an instant and productive discussion regarding the mold and plastic molding design,we employ the most popular design software programs: Unigraphic and Solidworks,and format:.iges , .dwg.Through the very beginning ,we attempt our very best to  provide on-time the trusted products what our user need.

With a purpose to present you an on-time and close tolerance plastic mold ,we’ve got to analyze lots of the facets of plastic mold manufacturing and plastic molding processing.The latest products , plastic molding prototype, will support us with this aspect,that can assist to have the plastic objects in advance of the plastic mold  machinning to steer clear of the opportunity of plastic molding design problems.

Custom Plastic Molding

molding cycle
custom plastic molding process

If you had no knowledge of injection molding, you wouldn’t be able to find the plastic components you need for your company’s products. This is a brief overview to help you get a basic understanding. And, of course, we’re always available to help you with your queries over the phone or by email.

What is custom plastic injection molding?

Plastic injection molding involves heating raw substance (plastic resin in the form of pellets, in our case) to the point of melting, forcing the viscous material into a mold and allowing it to become a solid shape. Injection-molded components can be found in nearly every product you see, from electronics to housewares and automotive products to food packaging. In the most basic sense, it’s an extremely straightforward process. Yet, there’s a highly complex science involved in doing it well–from creating molds to understanding the physical and chemical properties of the material.

Plastic injection molding is a result of the pressure die casting process that was used to cast metals during the latter part of the 1800s. Plastics were first introduced in the 1920s, but the process was basic at the time, with simple two-piece molds that were manually clamped together. The art and science of molds made of plastic have come a long way since then.

Everything You Need to Know About Custom Injection Molding

If you need large-scale production of custom-designed parts, Injection molding is the most efficient manufacturing method. While this manufacturing method is not ideal for singular or custom-designed items, injection molding is perfect when the exact product has to be produced many times over. Learn more about this highly efficient manufacturing process below and discover whether it is an option you should invest in.

How Does Custom Plastic Molding Work?

The entire injection molding process can be completed very fast, typically in less than one minute for each part. To run this process, you need an injection mold and equipment.

Custom Injection Mold

The custom injection mold sometimes referred to as a tool, is a reflection of the idea behind the product or component. It is usually constructed with two halves that connect in the middle, called the line of separation. The mold’s part geometry, texture, or polished surfaces are created in negative form. This way, when the plastic material flows into the tool and solidifies, the result is the designed part.

There’s something more than you can see in the final portion.

The first step is to let the molten material enter the cavity, which is why there is a system to deliver the material. There are various choices based on the desired cycle duration, cosmetic requirements, and dimensional consistency. Making the wrong choice is difficult to reverse, which is why professional assistance is essential.

In addition, the injection molds have an ejection system to kick the part off the tool as it opens to ensure that we are ready for the next cycle.

Thirdly, injection molds come with a temperature or cooling control system, which is comprised of mold-specific pathways. In these pathways, a circulating fluid maintains the tool at a constant temperature so that the procedure used for the first part is the same as the millionth.

Most often, the mold you use for injection is yours for exclusive use. Injection molds are a one-time cost and could make up most of the initial project costs. However, they are also incredibly versatile. A well-made tool can yield consistent, inexpensive parts for years to be.

Injection Molding Machine

injection machine

Injection molding machines are an element that is capital equipment. Injection molding machines are designed in many different methods, but three are the most crucial factors to take into consideration for your part, including mold/tool size, shot size, and clamping tonnage.

  • The mold size is quite simple; the mold should be compatible with the machine, so you need to consider tie bar spacing, as well as the minimum and maximum die height. The mold splits at the parting line and travels in a straight line held in alignment by four guides, called tie bars. Your machine will have to fit both horizontally and vertically between them. Furthermore, every device will have a minimum and maximum die length (or depth) that it will be able to accept when it closes and opens.
  • The size of the shot is the next factor to consider, as you’ll typically want a machine where the quantity of plastic that goes through your tool is between 20-80 percent of the barrel’s capacity. What is the barrel? The plastic resin, usually in hard pellet form, feeds into one end of a long metal cylinder, known as the barrel on the machine for injection. Inside the cylinder is an auger (or screw) that spins and feeds the pellets over and over the screw flights. When they reach the front, they’ve transformed into a melting pool of plastic that is waiting to be introduced into the mold in the next cycle.
  • Clamping tonnage is the last consideration. When the plastic is introduced into the cavity, it’s subject to extreme pressure – typically at 25,000 psi. When this pressure is applied over the entire surface of your component, it results in the force to open your mold along the separation line. To ensure that it stays closed, the machine applies the clamping tonnage. Utilizing too little of it can “blow the mold out” and give you a parting line flash as the plastic lip is where the two mold halves meet. In contrast, too much tonnage can damage your tool and/or the machine.

Your custom injection molding product and injection mold should be matched to the suitable machine to produce the most effective product. Because of the expense of the injection molding equipment, most companies opt outsourcing injection molding to a custom plastic mold maker with a range of machines suitable for various products.