How to Choose the Right Injection Moulding Machine for Drinking Water Bottle Production
PET bottles are widely demanded for the packaged water industry. And it is important for manufacturers to have equipment that supports the consistent production of such bottles and meet the required production volume.
The said equipment is called the injection molding machine for drinking water bottles, and buying a suitable one for your business depends on several factors, such as bottle size, performance, design, and expected output.
What Is a PET Preform Injection Moulding Machine?
The PET preform injection molding machine has a very simple function. It melts PET resin and then injects it into a mold. Then a required shape is formed in the mold, and it should match the intended bottle closure.
What follows is a two-step process where the preform is cooled, inspected, and sent to a stretch blow molding machine where it gets reheated and stretched into the bottle that we see every day.
Key Features
Before buying a PET preform injection molding machine, check these factors:
- Mold cavity count: the producible amount of preforms depends on the number of cavities. More cavities mean more preforms per cycle.
- Injection capacity: this must align with the required preform weight
- Cycle time and cooling: they can decide the production output and preform quality
Choosing Equipment for Different Bottle Sizes
Bottle sizes range from 330 ml to 1.5 liter. For each size, the right preform design, weight, and mold configurations are required. The neck finish should match the cap. This doesn’t mean that a machine can produce any size of bottle just because it has the capacity. For that you require adequate molds and compatible settings.
Why Consider NISSEI ASB Injection Moulding Machines?
NISSEI ASB is a Japanese manufacturer of plastic molding equipment. Its PM series uses a vertical clamping system and a compact configuration for preform production.
The official specifications show that the PM-70/111N can mold preforms up to 181 g with 8 cavities or 60 g with 24 cavities.
The PM-70/65NII can mold preforms up to 94 g with 8 cavities or 31 g with 24 cavities.
Supporting Equipment for Production
A complete PET bottle manufacturing setup needs more than an injection molding machine. It requires a resin dryer, which removes moisture from the plastic material. The automatic loader is used to feed resin into the machine. The chiller is for controlling process temperatures, and the color-dosing unit adds color where required. Suitable supporting equipment helps maintain stable production conditions and consistent preform quality.
Understanding the Complete Manufacturing Process
The two-step PET bottle manufacturing stages:
Primarily, the PET resin is prepared and dried, and then the preforms are injection molded. Then they are cooled and inspected. Preforms are then reheated and then stretched into the desired bottle shapes.
This process is the guideline using which a PET bottle manufacturing machine is selected.
New vs. Used Injection Moulding Machines
A new machine definitely comes with the benefits of owning a new machine, but if you are on a budget, a used one would be the best option for you.
Make sure to get a thorough inspection of the used machine and see a production trial for yourself before making a purchase. The mold and other supporting equipment should be in reliable condition as well. With these checks, you can actually understand the current condition of the machine.
How do you buy one in the UAE?
There are benefits to buying machinery that is already in the UAE. You get easier transport and inspection. You only have to check the documentation, confirm the seller’s details, and agree on transport, installation, and commissioning arrangements before the purchase.
On Seek Machines you can explore and purchase used machinery available anywhere in the UAE. Your ideal drinking water bottle manufacturing machine depends on factors such as preform design, production volume, and the equipment needed to complete the process.
You can contact Seek Machines and explore our wide range of used machine collections on www.seekmachines.com.