What is the nature of a dedicated injection molding machine for bottle caps?

What is the nature of a dedicated injection molding machine for bottle caps?

The most crucial attribute of an exceptional bottle cap undoubtedly pertains to its sealability and safety. Additionally, factors such as ease of opening, weather-resistance, and impact resistance should also be taken into account. Presently, consumer demands for packaging are constantly on the rise. In the Chinese market, the precision, efficiency, stability, and flexibility of the injection molding machines employed for producing bottle cap packaging have significantly increased.

So, what requirements must an injection molding machine fulfill in order to produce products that meet the quality standards for bottle caps?

1. The appearance of the bottle cap should be full and well-structured, devoid of noticeable shrinkage, bubbles, burrs, or defects. The color should be uniform, and the tamper-evident bridge should remain undamaged.
2. The opening torque should meet the maximum torque required for opening and sealing tamper-evident caps.
3. In terms of sealability, non-carbonated beverage bottle caps should not leak under a pressure of 200 kPa and should remain unopened under a pressure of 350 kPa. Carbonated beverage bottle caps, on the other hand, need to withstand a pressure of 690 kPa without leaking, while the caps themselves need to withstand a pressure of 1207 kPa.
4. Regarding thermal stability, the bottle caps should not rupture, deform, or leak (avoid liquid leakage).
5. In terms of drop performance, the bottle caps should not leak, crack, or detach.

It is widely known that traditional injection molding processes for bottle caps no longer satisfy the demands of the public or the market, with an increasing emphasis on the irreplaceability of bottle caps. Simultaneously, the cutting-edge Ucap series, a dedicated injection molding machine for bottle caps, developed by UNIQUE company, has emerged to comprehensively fulfill all market expectations for bottle cap production.

The swiftness of the Ucap series, the dedicated injection molding machine for bottle caps, stems from its core attributes. With a repeatable positioning accuracy of up to ±0.1mm and the adoption of servo-hydraulic direct-drive technology, it exhibits prompt responsiveness and precise low-pressure position control, which not only safeguards the mold but also enables multiple interlinking functions, meeting the demanding requirements for short bottle cap production cycles.