Custom Plastic Lid Making Machines | Sip Lids, Dome Lids & Embossing
In a crowded market, a "Standard Flat Lid" is a commodity. A "Functional Lid"—one with a sip lock, a unique shape, or an embossed logo—is a brand asset.
But try to run a complex Starbucks-style "Sip Lid" on a cheap standard machine, and you will fail. The cuts won't align. The locking tab won't snap.
At Newtop Machinery, we specialize in the Non-Standard. We modify our Plastic Lid Making Machines to handle the complex geometries that big brands demand. Here is how we customize our equipment for three specific high-value lid designs.
1. The "Sip & Lock" Lid (Coffee Lids)
The Challenge: These lids require a tiny "flap" that can be punched open and locked back. This involves two different cutting actions: a "Through Cut" (for the hole) and a partial "Score Cut" (for the hinge).
Our Engineering Solution:
We install a Dual-Stage Punching Station.
Instead of doing everything in one hit, we separate the process. Stage 1 forms the lid. Stage 2 performs the precision "Kiss-Cut" for the hinge using a high-tolerance steel rule die. This ensures the flap opens easily but doesn't fall off.
2. The "Super High" Dome Lid (Slushies & Desserts)
The Challenge: A standard dome lid is 40mm high. Some dessert cups need 60mm or 80mm domes. Standard machines stretch the plastic too thin at the top, causing the dome to collapse when stacked.
Our Engineering Solution:
We modify the Plug Assist System on our Servo Thermoforming Machine.
We use a specialized "Syntactic Foam" plug with a custom geometry that pushes the material deep into the cavity before air pressure is applied. This mechanically distributes the plastic thickness evenly, ensuring the top of the dome remains rigid even at 80mm depth.
3. The "Branded" Lid (Embossing)
The Challenge: You want your client's logo (e.g., "McDonald's" arch) embossed on the lid. But clients change often. You don't want to buy a new $5,000 mold every time the logo changes.
Our Engineering Solution:
We design Interchangeable Mold Inserts.
Instead of machining the logo into the main mold block, we create a removable "Coin" insert in the center of the cavity. You can swap the logo insert in 20 minutes without removing the entire mold base. This gives you the flexibility to serve multiple brands with one machine.
4. The "Square & Oval" Challenge (Stacking)
The Challenge: Round lids are easy to stack (they spin). Square or Oval lids must be perfectly aligned, or they will jam the collector.
Our Engineering Solution:
For non-round shapes, we replace the standard screw collector with a Robotic Pick-and-Place Unit.
A high-speed robot arm creates a vacuum seal, picks the lid directly from the mold, and places it gently into the counting chute. It guarantees 100% alignment for square, rectangular, or triangular lids.
Conclusion: Don't Limit Your Design
If your designer can draw it, we can usually build a machine to make it.
Don't let a "Standard Catalog" dictate your product line. The profit margins are in the custom designs.
Have a difficult lid design? Send us the 3D file (STEP or IGS format). We will provide a free Feasibility Report and Mold Layout proposal within 48 hours.
