Screw Cap 28-400 Aluminum Gold With PE Liner

Screw Cap 28-400 Aluminum Gold With PE Liner features a composite design of "aluminum cap + PE liner", achieving efficient sealing through standardized threading. It balances corrosion resistance, safety, and cost-effectiveness, making it a universal sealing solution for the personal care, food, and laboratory sectors.

Screw Cap 28-400 Aluminum Gold With PE Liner is suitable for glass or plastic containers with a 28-400 neck finish. The inside of the cap is lined with a layer of PE (polyethylene) liner, bonded to the cap body through a heat-press process, typically with a thickness of 0.5–1mm.

Screw Cap 28-400 Aluminum Gold With PE Liner creates pressure when screwed on, causing the PE liner to deform and conform tightly to the bottle mouth, preventing liquid leakage, gas penetration, and external contamination. As the sealing layer, the PE liner directly contacts the bottle contents, offering both physical isolation and chemical protection.

Some models of Screw Cap 28-400 Aluminum Gold With PE Liner feature a breakable tamper-evident ring for anti-theft opening protection.

Screw Cap 28-400 Aluminum Gold

This screw cap is designed for containers with a 28-400 neck finish, ensuring a secure seal. It combines functionality and aesthetics, making it ideal for industries that prioritize performance and visual appeal.

The Screw Cap 28-400 Aluminum Gold With PE Liner is designed to provide a secure, leak-proof closure for a variety of products, from gourmet food and beverages to personal care and industrial applications. Its striking gold finish on both the exterior and interior adds a premium appearance, making it an ideal choice for products that require an elegant presentation.

The 28-400 Aluminum Gold Screw Cap with PE Liner combines an attractive gold finish with robust leak-proof performance. Its lightweight aluminum construction, along with a compressible PE foam liner, makes it an excellent choice for products that require both functionality and aesthetics.

Screw Cap 28-400 Aluminum Gold With PE Liner Specifications

Cap Size: 28/400 (designed to fit bottles with a 28mm neck and 400 finish)

Dimensions (approximate):

Width: 1.26 inches
Depth: 1.26 inches
Height: 0.39 inches

Feature	Specification
Shell Material	Gold-finished aluminum, continuous thread, 28-400 size
Liner Type	Foam PE (compressible), or plastisol for hot-fill sealing
Seal Capability	Airtight vacuum seal, suitable for cold/hot fill
Temperature Range	~85 °F (cold) to ~212 °F (hot fill/steam)
Weight	~3–7 g (0.005–0.007 lbs)
Recyclable	Yes, aluminum shell; BPA-free liner
Food Safe	FDA compliant
Customization	Decoration (printing, embossing), lining options
Suitable For	Jams, juice shots, cosmetics, spirits, honey, adhesives, cleaning agents
Caution	Check against alkaline corrosion; verify container compatibility

Screw Cap 28-400 Aluminum Gold With PE Liner Materials and Construction

Body: High-quality aluminum, durable and lightweight.
Surface Finish: Gold coating achieved through anodizing or electroplating to enhance corrosion resistance and aesthetics.
Liner: Polyethylene (PE) liner ensuring a tight seal. PE is chemically inert, meets FDA food contact standards, and is resistant to moisture and chemicals.
Design: Features a continuous thread (CT) design for smooth, easy installation and removal. The ribbed top edge enhances grip during closure and reinforces a secure, leak-proof seal.

Item	Description
Outer Shell	Made with a gold aluminum outer shell. The metal screw cap uses a Continuous Thread (CT) design, with a 28-400 size—i.e., a nominal diameter of 28 mm and a thread pitch of 400—which is a common cap size in the bottling and canning industries.
Thread Type	28-400 Continuous Thread (CT), suitable for glass or plastic bottles with a 28 mm neck opening. Provides smooth screwing for easy resealing and repeated use.
Liner	Equipped with a compressible PE (polyethylene) foam liner, also known as foam PE or plastisol liner. This liner covers the interior of the cap and forms a stable, sealed closure when tightened—preserving the freshness and integrity of the contents.

Screw Cap 28-400 Aluminum Gold With PE Liner Dimensions and Compatibility

Neck Finish: Complies with the 28-400 standard (28mm diameter; "400" denotes a thread type/finish conforming to industry standards such as GPI/CMA).
Dimensions: The exact cap height/thread specifications depend on container requirements. Refer to the manufacturer’s guide for precise compatibility.

Necessity of PE Liner for Screw Cap 28-400 Aluminum Gold

Chemical Inertness: PE is stable against most chemicals, preventing direct contact between the metal cap and corrosive contents.
Elastic Sealing: Maintains flexibility at low temperatures (resistant down to -30°C), suitable for cold chain logistics.
Food Safety: Complies with food-grade standards (e.g., GB 4806.7), with no leaching risks.

PE (Polyethylene) Foam Liner:

Compressible foam that conforms to the bottle rim to create a leak-proof seal.
Suitable for cold-fill applications (e.g., oils, condiments, dry goods), but not recommended for hot-fill processes.
BPA-free and compliant with FDA food/liquid contact standards.

Screw Cap 28-400 Aluminum Gold With PE Liner Features and Benefits

Secure Seal: The PE liner conforms to the container rim, preventing leaks.
Durability: Aluminum construction resists rust and corrosion, suitable for harsh environments.
Aesthetic Appeal: The gold finish adds a premium look to consumer-facing products.
Reusability: Designed for multiple uses without compromising seal integrity (where applicable).

Screw Cap 28-400 Aluminum Gold With PE Liner Applications

Industries: Food, beverages, pharmaceuticals, cosmetics, and chemicals.
Gourmet Food & Beverages: Provides a secure seal to maintain freshness.
Industrial Use: Reliable performance under various temperature and handling conditions.
Uses: Suitable for bottles containing liquids, powders, or tablets that require sealed/waterproof closures.

Screw Cap 28-400 Aluminum Gold With PE Liner

Sealing Performance and Applications of Screw Cap 28-400 Aluminum Gold With PE Liner

Item	Description
Sealing Characteristics	The PE foam liner is compressible and chemically resistant, filling small gaps between the thread and bottle mouth to prevent leakage and contamination.
Sealing Characteristics	Designed for both cold-fill and hot-fill processes. Similar gold-plated plastisol-lined caps can withstand temperatures from approximately 75°C (185°F) to 100°C (212°F) during hot-fill or steam processes, enabling a full vacuum seal.
Ideal Uses	Widely used for sealing glass or plastic bottles in the food & beverage, homebrew, canning, pharmaceutical, personal care, and cosmetics industries.
Ideal Uses	Suitable for storing acidic or non-acidic substances such as jams, sauces, syrups, spirits, honey, edible oils, adhesives, lotions, etc.

Physical Properties of Screw Cap 28-400 Aluminum Gold With PE Liner

Temperature Resistance

The aluminum outer shell is heat-resistant; sealing temperature range is approximately 85°F (cold-fill) to 212°F, adaptable to various processing methods.

Sustainability and Compliance

Recyclability: Made from 100% recyclable aluminum, supporting eco-friendly packaging initiatives.

Food-Grade Safety: The liner material is BPA-free and FDA compliant, safe for contact with food and beverages.

Customization Options

Decoration: Available with options such as offset printing, embossing, hot stamping, or screen printing on the outer shell.

Compliance and Safety

FDA Compliance: The PE liner meets food-grade standards for direct contact with contents.
Chemical Inertness: Safe for acidic/alkaline substances (verify compatibility with specific contents).

Additional Specifications

Torque Requirements: Optimized for manual or automatic capping machines (specific torque values provided by the manufacturer).
Temperature Resistance: PE liner typically withstands temperatures from -50°C to 80°C, ensuring performance under various storage conditions.

Tamper Evidence

Unless otherwise specified, the standard design may not include tamper-evident features. Customization options are available upon request.

This bottle cap balances functionality, safety, and design, making it a versatile choice to meet various packaging needs. Ensure compatibility with the container’s neck specifications before selection.

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