Metal Caps Aluminum Screw Caps with PE Foam Liner

Our Metal Caps Aluminum Screw Caps with PE Foam Liner are threaded metal closures manufactured from food-grade aluminum alloy. The open-end edge adopts full-circle inward rolling process to eliminate sharp cutting burrs. Equipped with PE foam liner as standard sealing component, the caps achieve excellent sealing, shock-absorbing and leak-proof performance for glass containers.

Conventional cut-edge aluminum screw caps often generate sharp metal burrs at cap mouths. During filling-line manual feeding, these burrs may scratch operators' fingers; end-users may also get cut when twisting open finished goods. Our inward rolled-edge process fully removes this safety hazard. The built-in PE foam liner compresses tightly against bottle mouths during capping, blocking air, moisture and minor liquid leakage. This product is widely favored by private-label brands, craft food & beverage manufacturers and cosmetic liquid packagers, lowering consumer complaints caused by sharp edges and poor sealing.

Core Feature

Rolled-Edge Safety Structure

Cap opening edge is mechanically rolled inward to form continuous smooth curved surface without burrs. During mass production, strict inspection covers rolling depth, edge circular uniformity and surface smoothness to guarantee stable forming quality across batches. Optional pre-scored tear-strip structure can be added for tamper-evident controlled-opening demands; scoring depth and tear-line layout can be adjusted per cap dimension and opening-experience requirements.

PE Foam Liner Sealing System

PE foam liner is the core sealing component for Metal Caps Aluminum Screw Caps with PE Foam Liner. With good compression resilience, chemical inertness and low-odor property, PE foam liner fits closely onto bottle neck sealing face after capping. It delivers dependable leak resistance for liquor, syrup, edible oil and ordinary cosmetic liquids. Alternative liner materials are available upon request for special-content compatibility requirements.

Versatile Surface Decoration

Multiple decoration solutions support brand personalized packaging design: Foil stamping, Silk-screen printing, Embossing / Debossing, Custom lacquer coating colors, Original plain metallic aluminum finish

All decoration effects are produced following customer-supplied artwork and packaging specification requirements.

Product Specifications

Application Scope

Metal Caps Aluminum Screw Caps with PE Foam Liner fit most glass containers with standard continuous-thread bottle necks. Typical application scenarios include:

- Liquor & spirit glass bottles

- Syrup, health-drink bottles

- Edible oil glass jars

- Food storage & preserve jars

- Cosmetic liquid, essence and toner glass containers

- Craft beverage, fruit-infused drink glass bottles.

Brands adopting this series benefit from dual improvements: rolled-edge optimizes product high-end texture and eliminates hand-cut safety risks; PE foam liner ensures stable sealing performance, helping reduce after-sales complaints.

Certification & Quality Assurance

HYT Packaging implements full-process quality control covering raw-material incoming inspection, metal forming, edge rolling, surface decoration, liner insertion and finished-goods final inspection. Complete production traceability records are maintained for Metal Caps Aluminum Screw Caps with PE Foam Liner.

Recommendation: For new packaging projects, please complete fit-testing using your real bottle samples and filled product before formal mass-production launch.

Full-Range Customization Options

We provide one-stop customization matched to bottle hardware and brand packaging demands:

Bottle-Neck Matching Guidance

Cap selection shall comprehensively refer to bottle-neck overall parameters instead of diameter only. Thread specification, neck height, mouth sealing profile and capping equipment type all determine final assembly tightness and sealing performance.

Customers may provide any of below information for our evaluation:

1. Technical drawing of bottle neck

2. Physical bottle sample

3. Target cap diameter & height data

4. On-site capping working method

5. Liner performance & medium compatibility requirements

Before starting formal modification for Metal Caps Aluminum Screw Caps with PE Foam Liner, please send us bottle-neck drawing or physical samples for parameter confirmation. Pre-production fitting test service can be arranged upon request.

FAQ

1. What diameters are available for this aluminum screw cap?

Standard dimension series covers 18 mm, 20 mm, 22 mm, 24 mm, 26 mm, 28 mm, 28.5 mm, 30 mm, 31.5 mm, 34 mm, 38 mm, 42 mm, 45 mm, 48 mm, 52 mm. Cap height can be customized within 15-60 mm according to bottle-neck structure.

2. Can I customize cap color and brand logo?

Absolutely. Silver, gold and custom Pantone lacquer colors are supported. Available logo crafts include foil stamping, silk-screen printing and embossing.

3. How does the tear-strip tamper-evident function work?

Caps with tear strip adopt pre-scored weak-line structure. Consumers open caps by pulling along the pre-set tear line. The scoring depth and layout can be adjusted according to cap dimension and expected opening-force experience.

4. Can you make caps to fit our existing bottles?

Yes. Please send us bottle-neck drawing or real bottle samples, and we will evaluate compatibility. Pre-production fitting test is available.

5. Are these aluminum screw caps with PE foam liner fit for carbonated beverages?

Not recommended for high-pressure carbonated drinks without special structure upgrade. Carbonation-generated internal pressure may loosen caps and cause leakage. Please consult our team for carbonated-product project, we will recommend our dedicated ROPP aluminum cap solution.

6. What is the minimum order quantity?

Standard MOQ is 50 000 pieces. Final MOQ will be adjusted by cap size, surface-decoration complexity, custom color and liner requirements.