Flip-Top Thermos Cup Lid #1 Injection Mold Part

Core Advantages

• Precision Fit Tolerance Control: Through high-precision CNC machining and mold fitting, the clearance for the movable fit between the lid body, flip top, and buttons is controlled within reasonable tolerances, ensuring a smooth opening/closing feel without wobbling or noise.
• FoodGrade Safety Manufacturing: The mold structure design avoids dead corners that trap dirt. Mold steels and release agents used comply with FDA certification standards, ensuring the injection production process meets food hygiene safety norms.
• Automated Assembly Capability: Beyond injection production, we possess process capabilities for automatic sealing ring assembly, silicone overmolding, and plastic part assembly, effectively reducing labor and management costs for customers.
• Export Standard Verification: Leveraging 15 years of export experience, the mold design complies with DIN and HASCO standards. Key wear parts use standardized designs, facilitating subsequent global maintenance and procurement for customers.

Product Features

• Sealing Performance Assurance: High-dimensional stability of injection parts ensures the sealing ring installation groove fits tightly with the silicone ring.
• Verified by airtightness testing, it meets the anti-leakage standards of thermos cups.
• Temperature Resistance & Fatigue Resistance: Materials are adapted for PP, PPSU, or Tritan. Injection parts do not deform under high-temperature disinfection environments, and the flip hinge area passes 10,000+ opening/closing fatigue tests without breaking.
• Aesthetic Surface Treatment: Supports various surface effects such as glossy, fine matte, or textured. The mold surface treatment process ensures injection parts are free of sink marks and weld lines, with uniform surface gloss.
• Integrated Structure: The mold can form complex lid structures with tea filter slots, locking mechanisms, and vent holes, meeting functional integration design needs.

Application Scenarios

• Stainless Steel Thermos Cups: Suitable for the production of flip-top lids for various business, office, and outdoor sports thermos cups.
• Children's Water Bottles/Sippy Cups: Used to produce fliptop cup components with handles, where materials meet children's product safety standards.
• Smart Temperature Display Cups: Adaptable to the injection molding of cup lid housings with temperature display modules, meeting smart appliance supporting needs.
• Home Appliance Accessories: Serving as matching lid components for small appliances (such as soymilk makers, blenders).

FAQs and Solutions
Q1: The hinge area of the flip lid is prone to breaking or deforming. How is this solved from a mold perspective?
Solution: The hinge area is a stress concentration point. We perform finite element analysis during the mold design stage to optimize the hinge wall thickness and transition fillets. In the injection process, we optimize the gate location to ensure weld lines are away from the hinge stress area, combined with reasonable holding pressure parameters to eliminate internal stress and improve structural strength.

Q2: Visible weld lines or sink marks appear on the cup lid surface, affecting appearance and sealing. How is this improved?
Solution: Sink marks are common in areas with uneven wall thickness. We use mold flow analysis software to optimize the mold's cooling channel layout to ensure uniform cooling. For weld lines, we change the gate type (e.g., using hot runner valve gates) or add overflow wells to divert weld lines to noncosmetic areas, ensuring product appearance and sealing groove quality.

Q3: How is the convenience of future spare parts replacement ensured for molds exported overseas?
Solution: Our mold design strictly follows international standards. All ejector pins, springs, and slider accessories use standard component systems such as DME or HASCO. Customers can purchase universal accessories directly in the local market for replacement without relying on the original factory, significantly shortening maintenance cycles.

Q: 10. If I want to develop a product containing injection-molded parts, what kind of assistance can you provide?

We can provide full support ranging from product development review and structural design, to mold manufacturing, volume injection molding, printing, and assembly. We can collaborate with customers in the early stages of product development to optimize designs for cost reduction and improved manufacturability.

Q: 9.What is the company's quality policy?

The company always adheres to the quality policy of "Precision, High Efficiency, Forging Quality," and is committed to providing customers with high-quality services through advanced technology and an excellent management team.

Q: 8.What are your competitive advantages compared to other mold enterprises?

Our advantages lie in the combination of Singapore's precision mold technology, advanced production equipment (extensive imported CNC and injection molding machines), a comprehensive one-stop production process (from design to assembly), and a strict quality management system certified by IATF 16949.

Q: 7.Who are your main customers, and to which regions are the products exported?

We have established good cooperative relations with well-known companies, including UK's Land Rover and Triumph Motorcycles, domestic SAIC, Changan, ABB charging stations, and Japan's Tiger Corporation. Our products are exported to countries such as Japan, Europe, and the United States.