There are different issues to be aware of when purchasing a Pet Bottle Preform mold to minimize production problems associated with the use of the mold. Potential production problems with used molds include poor part quality, slow cycle times, low molding ratios, and machine downtime due to poor part discharge.
Molding machine damage
Another major problem is that the molding machine may be damaged due to the molded parts used. Used plastic molds are generally in poor condition, which can result in broken tie bars, plate wear, and even breakage of the toggle pin.
Step-by-step guide to buying a mold
In order to get the most out of the used plastic injection molds, you need to ask some questions before buying them.
Ask to see the operation of the mold or request a sample. This is the only way you can accurately understand cycle time and quality.
Samples are taken from all caves. The sample was weighed and its thickness was measured. This information will give you a more accurate picture of the mold condition. Any big changes in the cavity, then you know that you should not buy these.
If you want to get a satisfying and affordable pet preform, choosing a reliable pet preform manufacturers is the most important. Today, we recommend the Gianlian mold. We have many years of experience in the field of plastic molds. We will never let you down.
Here are some things you should know as a custom Pet Bottle Preform that product developers should know. Are you looking for a cost-effective way? The process that doesn’t force you to spend a lot of money on producing a lot of parts is custom injection molding. However, if you are considering return on investment (ROI), which process you decide to use to make a large number of parts should depend on this, as the purchase of plastic injection molds involves an initial investment. Here are some other things you should know about custom injection molding.
Think about the number of parts you need to produce each year. Will your needs reach tens of thousands or hundreds of thousands? If so, then this process is not for you. Look for other programs, such as polymer casting, manufacturing, or vacuum/thermoforming (but your final decision will depend on the geometry of the part or part).
If you believe that the number of parts you produce will make your initial investment in custom plastic injection molds (even old plastic injection molds) worthwhile, you must also consider the shape of the part when choosing which molding process to use. .
If you don’t know or want to know more about the different thinking processes and the shapes or geometries that fit them, continue reading the following:
Custom Injection Molding – The wall thickness of the part is relatively constant (but generally no more than 1 / 8″). There is no internal void.
Rotational Molding – This method is used to produce larger or larger parts with empty spaces (or so-called internal voids) inside. Rotational molding is a slow and efficient process of making small, large parts for the manufacture of waste bins, gas canisters, tanks, hulls and other items.
Blow Molding – To help you understand blow molding, imagine a balloon swinging in a cavity. It is injected into the air and eventually forms the shape of the cavity. This process is used to make bottles, insulating glass, kettles and other things. It can be small, but there is an empty space inside.
Vacuum (hot) forming – this is somewhat similar to custom or plastic injection molding. It takes advantage of a piece of heated plastic and then vacuums it to form a shape that is then cooled to produce the shape you want. It is used for packaging trays, lids, clamshells and other such as instrument panels, plastic trays and refrigerator liners.
The information provided above will give you an idea of using the best molding process. No matter which method you think you need, it’s always important to start with calculations, especially because you want to know the return on investment so you can determine which method is best for your budget and pet preform manufacturers. As a product developer, you should consider a schedule of up to two to three years before recouping funds for custom injection molding.
1 Pet Bottle Preform mold must be cleaned and polished regularly.
2 Open the source under the pressure switch must be slow to prevent the air flow from blowing dust into the solenoid valve too quickly, and open the exhaust valve for 30 seconds to ensure the air is clean.
3 Plastic blow molding machines must ensure that the mechanical parts are good, there is no one inside the machine, no foreign objects. Especially the handle position to avoid injury. Also close the security door.
4 Start the machine must start the motor, delay the heating machine for 30 seconds to prevent voltage jitter. Before starting heating, you must ensure that the cooling water is not turned on.
5 15 minutes after the start of heating (2 – 3 minutes), when the temperature of the oven rises evenly, press the button in the embryo. At the same time, open the bottle’s power, or do not blow the bottle.
6 Plastic blow molding machines must pay close attention to whether the machine will run with the same noise to achieve early detection and stop early settlement in time.
7 In an emergency, press the emergency stop button and press the brake. Then find a quick solution to the problem based on an analysis of the cause of the site.
8 After normal operation, the body of any part of the machine should not be placed in the machine, so the robot will not hurt people. If the machine has an abnormal sound, you can slow down after watching.
9 After normal consumption, the operator should always observe the quality of the bottle to avoid shaking voltage or other reasons that affect the quality of the bottle.
10 During maintenance, press the service button to ensure the safety of the repair according to the defects on the touch screen. If you need to observe the movement of each mode by hand, please pay attention to the position of the robot. At the same time, it is important to understand the role of the button separately and then put it into action. Make sure the error is caused by unnecessary trouble.
11 After each pet blowing machine repair, you must ensure that tools and screws are cleaned to prevent the machine from remaining and affecting the normal operation of the machine.