8011 Nhôm sơn mài cho nắp chai: Giá, Coatings and Specs

Giới thiệu

Closure makers searching “8011 lacquered aluminum for bottle caps price” need a thin, an toàn thực phẩm, pre-coated aluminum strip that runs on high-speed cap presses to make ROPP wine and spirit closures, screw caps and pharmaceutical seals.

8011 is an aluminum-iron alloy with the formability, low earing and pinhole-free surface these operations demand, and “lacquered” means it arrives already coated inside and out.

Buying lacquered coil rather than bare stock removes an in-house coating step and guarantees a cured, compliant food-contact surface.

This guide covers the standard gauges and tempers, the lacquer systems and compliance, giá được xây dựng như thế nào, indicative ranges and exactly what to specify for an accurate quotation.

Là gì 8011 Lacquered Cap Stock?

8011 is a non-heat-treatable 8xxx-series alloy with about 0.6–1.0% iron and 0.5–0.9% silicon; it is strengthened by cold rolling. For closures it is supplied two ways:

• Bare (mill) coil—uncoated strip for converters who apply their own lacquer and print.
• Lacquered coil—pre-coated strip with a food-grade internal coating and a colored, gold or clear external coating, sometimes printed, ready to stamp.

Alloy alternatives are 8011A, 3105, 1200 Và 1100, Nhưng 8011 is preferred where low pinholes, good deep drawing and a low earing rate matter.

Note that crown corks (beer bottle caps) are normally tinplate/ECCS, không phải nhôm, and should not be confused with aluminum ROPP and screw closures.

Standard Gauges, Tempers and Tolerances

Tham số	Phạm vi điển hình cho 8011 vốn cổ phần
nóng nảy	H14, H16, H24, H26 (H18/H19 for stiffer or harder caps)
độ dày	about 0.16–0.23 mm (thông thường 0.17, 0.20, 0.22 mm)
Chiều rộng	about 50–900 mm slit strip (wider coil on request)
Dung sai độ dày	about ±0.005 mm
Earing rate	typically ≤2% to limit press scrap
lỗ kim	0 mỗi mét vuông; surface free of oil, roll marks and stains
Cốt lõi / packing	76 mm hoặc 152 mm ID; about 38–42 kg per roll, wooden cases

 

Tensile strength is roughly 110–155 MPa across H14–H16 with the elongation needed for rolling and embossing; exact values depend on gauge and should be agreed on the MTC.

Harder tempers hold thread and tamper bands, while softer ones draw more deeply.

Internal and External Lacquer Systems

The internal (product-contact) coating protects the metal and contents and is the most carefully specified; the external coating carries color, print and corrosion protection.

• Internal: epoxy-phenolic / epoxy-polyamino remains mainstream for strong adhesion and resistance to acid, oil and heat; polyester and water-based systems are also used.
• BPA-NI: coatings made without intentionally adding BPA, BADGE or BFDGE; BPA-NI is a formulation claim, so confirm the actual polymer system and migration records.
• External: vàng, colored or clear baking lacquer or print primer.
• Film build: about 12–18 μm dry on the face and 5–8 μm on the back, depending on the cap.

Coating quality is verified by cross-cut adhesion (cấp 0), 0T bend without cracking or peeling, MEK rub resistance, heat resistance and, where required, an HgCl₂ test; the film must survive drawing, thread rolling and embossing without flaking.

Food-Contact Compliance

Closure stock is supplied to the market’s food-contact rules—FDA 21 CFR ở Mỹ, the EU framework including Regulation (EU) 10/2011,

LFGB in Germany and GB 4806 in China—with overall and specific migration, and heavy-metal limits, documented per coating and gauge.

Ask for the declaration of compliance, migration test reports and, for BPA-NI, a written statement; market trends also move toward PVC-free and PFAS-free packaging coatings.

Coating choice also depends on the contents and filling process. Wine and oil are relatively forgiving, whereas carbonated drinks, juice and vinegar are more aggressive and need an internal lacquer proven for that pH, with the liner and bottle

checked together; hot-fill or pasteurised lines require heat resistance and the cap must hold seal pressure over shelf life.

Matching the lacquer to the product up front avoids corrosion spots, off-taste or leaks that a generic food-grade label alone does not prevent.

Ứng dụng chính

• BẤT LỊCH SỰ (roll-on pilfer-proof) closures for wine, tinh thần, olive oil and bottled water.
• Aluminum screw caps for beverages, oils and general bottled products.
• Pharmaceutical vial seals and flip-off / PP caps, plus cosmetic and personal-care closures.
• Tamper-evident and perforated break-band caps, printed or embossed to brand.

How the Price Is Built and Indicative Ranges

Bare 8011 coil is priced per metric ton as the aluminum ingot base plus a rolling fee. Lacquered coil adds the coating material (internal and external), coil coating and curing, printing if required, plus inspection, so it is quoted per ton of finished strip and costs more than bare stock.

Because the ingot component moves daily with LME/Shanghai prices and the coating system varies, no fixed annual price is possible.

Hình thức sản phẩm	Indicative B2B reference (FOB, mỗi tấn)
Bare 8011/3105 cap coil	roughly the ingot price plus a rolling fee (commonly in the low-thousands US$/MT)
Lacquered / coated closure coil	about US$2,200–3,500/MT in common listings, varying with gauge and coating
Đã in / multi-color or BPA-NI coil	cao hơn nữa, depending on colors and compliance package

 

These are indicative platform ranges, không phải là một đề nghị cố định; reconfirm against today’s ingot price, máy đo, chiều rộng, coating and quantity, and compare like-for-like on the same Incoterm.

Quality Control and How to Order

Để có giá chính xác, gửi: hợp kim và tính khí (8011 H14/H16); độ dày và dung sai; slit width; bare or lacquered; internal coating (epoxy/polyester/BPA-NI) and external color or print; dry film build; ID lõi;

trọng lượng cuộn; Số lượng; target market and compliance (FDA/LFGB/EU/GB); packing and destination port. QC covers gauge, chiều rộng, bông tai, lỗ kim, bề mặt, adhesion and migration on certificates,

với ISO 9001 và có sẵn kiểm tra của SGS / BV. Verify new material on production-gauge samples run at normal press speed, và sử dụng mẫu đã ký làm tiêu chuẩn tiếp nhận. Các thuật ngữ phổ biến là 30% tiền gửi, số dư so với vận đơn, FOB/CFR/CIF.

Confirm the supplier genuinely rolls and coats in-house rather than reselling spot strip: only an integrated line can hold gauge, color and coating weight across lots and re-supply the same specification.

Audit the coating line, request samples from the target gauge and color, run them on your press and with your contents, and approve a signed sample before bulk.

Câu hỏi thường gặp

Hỏi: Giá của nó là bao nhiêu 8011 nhôm sơn mài cho nắp chai?

MỘT: It is quoted per ton of finished strip as the ingot and rolling cost plus the internal/external coating; common B2B listings sit roughly between about US$2,200 and 3,500/MT FOB depending on gauge and coating, with printed or BPA-NI higher. Request a same-day quote.

Hỏi: Why buy lacquered coil instead of bare coil?

MỘT: Lacquered strip is already coated and cured with a compliant food-contact surface, removing an in-house coating step; bare coil only suits converters with their own coating line.

Hỏi: Which gauge and temper are standard?

MỘT: About 0.16–0.23 mm (thường 0.17/0.20/0.22 mm) in H14 or H16, slit to the press width with a low earing rate and zero pinholes.

Hỏi: Is the coating BPA-NI and food safe?

MỘT: BPA-NI, epoxy, polyester and water-based internal coatings are available with FDA, LFGB, EU and GB migration documentation; BPA-NI is a formulation claim, so request the polymer details.

Hỏi: Can it make beer crown corks?

MỘT: No—crown corks are normally tinplate/ECCS. This aluminum strip makes ROPP, screw, pharmaceutical and cosmetic closures.

Hỏi: MOQ và thời gian thực hiện là gì?

MỘT: MOQ is commonly about 1–3 tons per specification with samples and trial orders available; thời gian dẫn phụ thuộc vào máy đo, lớp áo, printing and quantity.

Phần kết luận

8011 lacquered cap stock is the ready-to-press, food-safe aluminum strip behind ROPP, screw and pharmaceutical closures.

Its price combines the aluminum market with the coating system, so define the temper, máy đo, chiều rộng, internal and external lacquers and compliance, then compare like-for-like per ton on the same Incoterm and approve production samples before bulk.