The 5 gallon/3 gallon cap is suitable for the 5 gallon/3 gallon mineral water bucket.
The injection molding machine has a hopper where the plastic resin pellets are fed into the machine. The pellets are then heated and melted by a screw that forces the melted plastic into the mold cavity. Once the mold is filled with molten plastic, it is cooled and solidified to create the bottle cap
Two type of 5 gallon/3 gallon cap
At present, there are generally two types of bucket covers on the market: Covers with inner plugs and gaskets; Lid without inner plug and easy to tear.
With internal plug: Because it is an old design, the use process is troublesome. There are many parts, which require multi-step assembly, resulting in high production costs. It takes time and effort. Without inner plug+with tear: the corner is specially designed, which can be directly sealed to ensure no water leakage. Multi-step assembly is not required. It is easy to tear off the lid when using. Disadvantages: need to match the bottle embryo mouth. easy-to-wear
1.1.old type,-the cap with inner plug
With internal plug: Because it is an old design, the use process is troublesome. There are many parts, which require multi-step assembly, resulting in high production costs. It takes time and effort.
1.2:easy-to-wear.
The type of cap Easy-to-wear, without inner plug and it is more easy to wear.
The corner is specially designed, which can be directly sealed to ensure no water leakage.
Multi-step assembly is not required.
It is easy to tear off the lid when using.
Disadvantages: need to match the bottle embryo mouth. easy-to-wear
5 gallon barreled water bottle caps, available in various weight specifications such as 10-15 grams, and colors can be changed according to customer requirements
Scope of application: Three gallon, five gallon buckets
Type: Tearable edge
Color: white, blue, or custom color
Features: Sealed, dustproof
Product details:
- Use imported plastic mold steel and drinking water grade PE material
- International standard size, universal for most water plant bottled water bottle caps
- Disposable bottle caps are more dustproof, leak proof, safe and hygienic
- High precision, hot runner process without nozzles, high production efficiency
- Anti leakage process, environmentally friendly and pollution-free
Production process and difficulties:
- The corner is specially designed and can be directly sealed to ensure no water leakage.
- No need for multi-step assembly
- The lid can be easily torn open during use.
- Disadvantage: It is necessary to match the bottle embryo mouth.
5/3 gallon water bottle cap mold
Cover mold generally has 8 cavities, 12 cavities and 16 cavities.
There can be more.
The key difficulty is the thickness of the wall, so ejection is difficult after cooling. In particular, the easy-to-water cover is easy to crack when the machine is ejected. Therefore, the precision of the mold is required to be high.
How to choose the injection molding machine for producing 3/5 gallon bottle caps?
Generally, the mold is 8-chamber, 180-ton injection molding machine is selected for cold runner, and 220-ton machine is selected for hot runner mold.
Why are there different machine options for the same 8-cavity mold?
The main reason is die thickness. Hot runner die thickness will increase due to runner plate and cooling water path
The mold is relatively thick and needs 460mm at least. It is better to achieve 500mm
However, the mold thickness of cold runner mold is generally less than 400mm, so a smaller 180 machine can be selected
