| Product description |
In the production of injection molded caps, the suction machine plays a crucial role by drawing in the mix and pushing it into the injection machine barrel. Once inside, the mixture is melted and processed to form plastic before it is injected into the mold cavity. The injection molded cap is then allowed to cool down and settle, after which it is taken out of the mold and a ring with pads is added to the end product.
Alternatively, compression molding caps are produced by a similar process. The suction machine is responsible for drawing in the mix, which is then semi-melted and processed inside the compression molding machine barrel. Next, the mixture is extruded into the mold cavity, which is closed to initiate the compression molding process. After cooling and solidifying, the compression molded cap is taken out of the mold, and a ring with pads is added, completing the production process.
The Injection Molding Machine for Customized Plastic Bottle Caps features a precision control system, ensuring a stable and reliable operation of the machine. It also offers a high level of repetition accuracy, strong resistance to interference, and extensive safety protection. Additionally, the machine has an energy consumption monitoring function. The hydraulic power system is equipped with responsive and powerful motors that have low inertia and produce minimal noise. With the integration of an improved screw pump, customers can experience exceptional performance and a quieter working environment. Moreover, this machine excels in low-pressure mold protection and vibration demoulding, making it an ideal choice for various production needs.
Plastic bottle cap material classification
Polypropylene (PP) has a lower density compared to polyethylene (PE), but it boasts superior strength, stiffness, hardness, and heat resistance. These excellent properties make PP suitable for use at temperatures around 100 degrees.
PE material is commonly used for the single-piece cover because it is softer compared to PP.
PE、PP⑶，。，。
The form of Division: It can be categorized into single cover and double cover. Let's discuss the same topic but in a completely different way.
The monolithic cap is designed without any internal gasket. The cap is made from a uniform material throughout, and it is tightly sealed by either folding or an inner plug. Please note that the generated content may differ significantly from the original text information, as it will be based on a different approach of speech rather than ChapGPT's.
The double-piece cap consists of an internal gasket, which is composed of a soft material. The seal of the cap is maintained by the rebound force generated when the gasket is compressed. Now let's compare the double-piece cap with other types of caps.
The equipment investment for the single-piece cover is lower compared to the two-piece cover as it does not require any padding or padding machine. Additionally, the cost of gasket material is more than double the price of cover material. Consequently, the cost of manufacturing a single-piece cover is less than that of a double-piece cover.
Single-piece caps have specific requirements regarding the size and shape of the bottle mouth. Flanged single-piece caps seal the bottle by utilizing the rebound force from folding deformation to press against the outer edge and end surface of the bottle mouth. On the other hand, inner plug type single-piece caps rely on the interference fit between the outer diameter of the inner plug and the inner diameter of the bottle mouth to ensure a secure seal.
In comparison, double-piece caps have a softer gasket, which allows for greater tolerance of bottle mouth defects.
Regarding the production process, caps can be divided into two types: injection molded and compression molded. The production process for injection molded caps involves the following steps... [Please continue the explanation based on the original text information].
| Main Parameters |
| Screw diameter | mm | 70 | 75 | 80 |
| Screw L/D ratio | L/D | 22.6 | 21 | 19.7 |
| Shot weight | gram | 1225 | 1406 | 1600 |
| Injection capacity | cm3 | 1346 | 1545 | 1758 |
| Injection pressure | Mpa | 201 | 175 | 154 |
| Theoretical injection rate | g/s | 370 | 423 | 484 |
| Plastic capacity | g/s | 60.4 | 71.4 | 83.7 |
| Injection stoke | mm | 350 | ||
| Screw torque | N.m | 3490 | ||
| Max screw rotate speed | r/min | 150 | ||
| Clamping force | Ton | 480 | ||
| Opening stroke | mm | 770 | ||
| Space between tie bars | mm | 760x 760 | ||
| Mould height | mm | 280-790 | ||
| Max daylight | mm | 1560 | ||
| Ejector force | ton | 11.34 | ||
| Ejector stroke | mm | 195 | ||
| Ejector quantity | 13 | |||
| Oil pump motor | kw | 45 | ||
| Pump pressure | Mpa | 16 | ||
| Heating power | kw | 28 | ||
| Machine size | M | 7.5*2.1*2.45 | ||
| Machine weight | ton | 20 | ||
| Oil tank capacity | L | 850 | ||
| International designation | 4800-2710 | |||
| Detail image |
| The main parts |
| Company information |
| Our services & after-sale guarantee |
One-year warranty for core components and lifetime maintenance
One-stop service
Fast delivery
Fast on-site service
Quality certification
| Certification |
| Service Buyer |
We have always put integrity first, our customers are all over the world, and our products are widely praised. Looking forward to your arrival.
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