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Valve gate hot runner Hydraulic actuated auto unscrewing mechanism Multi-stage ejection Packaging application All the heating elements of the mould is adopted high quality famous brand from wel-known supplier in domestic market or Over-sea market. Moving part with high precise machining to make sure be interchangeable. Mould different part apply different steel, Main adopted mould steel are S136,W302, Dc53. SKD11, Berylium Copper etc. Point to point individually control the mold hot runner system.
We have significant experience in the manufacture of cap molds for different types of closures by customer's demand. Adopt imported P20,2316 etc, steel. Hot runner is designed advanced and reasonably, each cavity heat controled independently. temperature uniform. Each cavity and core have independent cooling system, shorten production cycle time. Cavity can be changed, convenient to change remark of the cap.
Generally used for food soy sauce, vinegar, glass bottles and PET plastic bottles on the lid, the center of the lid has two kinds of tear and non-tear. There is the toiletries LDPE bottle, PP bottle, HDPE bottle of various shapes on the bottle flap, from oval, round large and small size. The first use of flip cover is to suit the beautiful shape of the bottle, but to facilitate the opening and closing of the hand, which will reflect the dry feel of the flip cover joint just with the tightness of the sealing water. The screw thread on the flip cover mold structure is jacked out, and the screw thread rotates automatically. We can all do the best we can.
Flip molds can be categorized into food-grade, cosmetic-grade, etc., based on application scenarios. Their core functions focus on "aesthetics" and "convenience," and in particular, addressing the practical need of "preventing the upper and lower lids from separating and getting lost" requires optimization through multiple dimensions such as structural design, material selection, and mold precision. The details are as follows:
Application scenarios: Packaging in direct contact with food, such as snack cans, sauce bottles, and beverage bottle caps.
Special requirements: Must comply with food contact safety standards (e.g., FDA, LFGB). The mold cavity material mostly uses corrosion-resistant, non-leaching S136 stainless steel to ensure the molded flip lids are odor-free and do not contaminate food. The surface must be smooth and free of dead angles to avoid residual food crumbs and facilitate cleaning.
Application scenarios: Beauty packaging such as cream jars, lipstick caps, and perfume bottle caps.
Special requirements: Extremely high precision in appearance is required. The mold cavity must undergo mirror polishing (Ra ≤ 0.04μm) to ensure the flip lid surface is free of shrink marks and weld lines, and is compatible with decorative processes like pearlescent coating and gold stamping. The material must resist components in cosmetics such as alcohol and oils, with corrosion-resistant S136 or pre-hardened steel NAK80 commonly used.
Flip molds achieve precise control over aesthetics (shape, gloss, details) and convenience (feel, opening efficiency) through differentiated designs for food-grade and cosmetic-grade applications (with emphasis on safety and appearance, respectively). In particular, the "one-piece hinge + locking mechanism" structural design, optimized material toughness, and high-precision mold processing fundamentally solve the problem of "upper and lower lids separating and getting lost." They not only meet users' needs for product practicality but also enhance product added value through exquisite appearance.
