Engineered for Viscosity & Velocity
From 20,000 cps creams to rapid refill stations. Our Wide Opening (35mm – 80mm) packaging series solves the bottleneck of traditional filling lines while enabling the circular economy.
Polypropylene (PP): The Foundation of Wide Mouth
Creating a wide opening isn’t just about making a bigger hole. It requires structural reinforcement to maintain seal integrity. Standard thin-wall bottles can ovalize (deform) at the neck when capped with high torque.
The Golden Soar Solution: We utilize Injection Molded PP with reinforced neck rings. Unlike extrusion blowing, injection molding guarantees thread precision to ±0.05mm. This ensures that large diameter caps (up to 80mm) screw on smoothly without cross-threading, providing a hermetic seal every time.
This material choice also allows for Hot Filling up to 100°C, making it ideal for body butters, hair masks, and scrubs that are poured hot.
View PP Material Specs →
Optimizing the Filling Line
For factory managers, narrow necks are a bottleneck. High-viscosity products (like clay masks or conditioners) create “back-pressure” when injected quickly into a small opening, leading to air pockets and messy overflow.
The 55mm Advantage: By switching to our 55mm wide-mouth standard:
- Nozzle Speed: Filling nozzles can dive and retract faster without creating a piston effect.
- Accuracy: Larger target area reduces spillage waste during high-speed indexing.
- Assembly: Capping machines can apply torque more evenly across a wider surface area.
As seen in our assembly workshop, color-coded wide caps are sorted and applied with automated chuck cappers, achieving speeds of 120 units per minute.
Industrial & Cosmetic Metal Options
Aluminum Wide Jars
Application: Pomades, Waxes, Candles.
Aluminum offers a seamless, rust-proof wide opening. The threaded lid engages with a rolled edge on the tin body. Ideal for products containing essential oils that might react with plastics. The wide surface area is also perfect for top-label branding.
Explore Aluminum Series →Tinplate Industrial Cans
Application: Paints, Solvents, Dry Food.
The classic “Paint Can” design features a full-aperture opening with a friction-fit “Plug Lid” or a “Lever Lid”. This provides the widest possible access for brushes or scoops. Internal lacquering ensures food safety for dry goods like tea or coffee.
Explore Tinplate Series →The “Refill Revolution” Enabler
The biggest barrier to the circular economy is cleaning. Consumers will not refill a bottle they cannot clean. Narrow neck bottles trap residue and biofilm.
Scrubbable Design
Our 55mm+ openings allow a standard sponge or brush to reach the bottom. This ensures 100% removal of old product before refilling.
Zero Waste
Users can scoop out the “last drop” easily with a spatula or finger, preventing the typical 15% product waste found in pump bottles.
Quick Drying
Wide openings allow for airflow, ensuring the container dries completely after washing, preventing mold growth.
Neck Finish Specifications
| Neck Standard | Opening ID (mm) | Thread Type | Recommended Application |
|---|---|---|---|
| 38/400 | 28mm | Continuous | Vitamins, Gummies, Spices |
| 53/400 | 43mm | Continuous | Body Creams, Hair Masks |
| 70/400 | 60mm | Continuous | Protein Powder, Industrial Paste |
| 89/400 | 79mm | Continuous | Bulk Food, Paint, Wax |
Engineering FAQ
Start Your Refillable Line Today
Request a sample kit to test the sealing integrity and filling ease of our wide-mouth series.
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