Seal bag

目次

Seal Bag: A Comprehensive Guide to Global Supply, Manufacturing, and Market Insights

Introduction to Seal Bags

A seal bag, commonly referred to as a resealable bag, zipper bag, or self-sealing pouch, is a flexible packaging solution designed to preserve product freshness, prevent contamination, and provide convenient storage. These bags are manufactured using materials such as polyethylene (PE), polypropylene (PP), and laminated films, often incorporating a pressure-sensitive adhesive or a mechanical zipper closure. Seal bags are ubiquitous across industries, including food packaging, pharmaceuticals, electronics, cosmetics, and retail. Their primary function is to create an airtight or watertight seal, extending shelf life and ensuring product integrity. The global demand for seal bags is driven by the rise of e-commerce, increased focus on food safety, and the need for sustainable packaging options.

Global Top 10 Seal Bag Suppliers and Manufacturers

The global seal bag market is highly competitive, with key players spanning North America, Europe, and Asia. Below is a ranking of the top 10 suppliers and manufacturers based on production capacity, revenue, and market reputation.

順位 会社名 本社 専門性
1 Sealed Air Corporation アメリカ High-performance protective packaging
2 Amcor plc オーストラリア Flexible and rigid packaging
3 Berry Global Inc. アメリカ Custom seal bags and films
4 Novolex Holdings アメリカ Food service and retail bags
5 Huhtamaki Oyj フィンランド Sustainable packaging solutions
6 モンディ・グループ オーストリア Paper and plastic seal bags
7 Winpak Ltd. カナダ High-barrier seal bags
8 ProAmpac LLC アメリカ Flexible packaging and automation
9 Constantia Flexibles オーストリア Pharmaceutical and food seal bags
10 Bischof + Klein SE & Co. KG ドイツ Technical films and seal bags

Top 10 Seal Bag Suppliers and Factories in China

China is a dominant force in seal bag manufacturing, offering cost-effective production, advanced technology, and massive scale. The following are the top 10 Chinese suppliers and factories.

順位 会社名 所在地 主要製品
1 Zhongshan H&T パッケージング 株式会社. 広東省中山市 Resealable zipper bags, stand-up pouches
2 Dongguan New Pack プラスチック Products Co., Ltd. 広東省東莞市 Custom seal bags, food-grade bags
3 Shanghai Haide Packing Material Co., Ltd. 上海 Medical and pharmaceutical seal bags
4 Qingdao Zhongtai Plastic Packaging Co., Ltd. 山東省青島市 Heavy-duty seal bags, industrial packaging
5 Shenzhen Chengxing Packing & Material Co., Ltd. 広東省深セン市 E-commerce mailers, zipper bags
6 Foshan Nanhai Lvyuan Plastic Packaging Co., Ltd. 広東省佛山市 Biodegradable seal bags
7 Wenzhou Sunchuan Industry & Trade Co., Ltd. 浙江省温州市 Laminated seal bags, coffee packaging
8 Xiamen Changsu Industrial Co., Ltd. 福建省アモイ市 Custom printed resealable bags
9 Hangzhou Xianfeng Printing 株式会社. 浙江省杭州市 High-barrier seal bags
10 Guangzhou Yuanxing Industrial Co., Ltd. 広東省広州市 Retail and promotional seal bags

世界のサプライヤーと工場紹介の表と連絡先Eメール

会社名 国名 専門性 連絡先メールアドレス
Sealed Air Corporation アメリカ Protective seal bags info@sealedair.com
Amcor plc オーストラリア Flexible packaging contact@amcor.com
Berry Global Inc. アメリカ Custom seal bags sales@berryglobal.com
Novolex Holdings アメリカ Food service bags info@novolex.com
Huhtamaki Oyj フィンランド Sustainable solutions communications@huhtamaki.com
モンディ・グループ オーストリア Paper and plastic bags info@mondi.com
Winpak Ltd. カナダ High-barrier bags sales@winpak.com
ProAmpac LLC アメリカ Flexible packaging info@proampac.com
Constantia Flexibles オーストリア Pharmaceutical bags info@constantiaflexibles.com
Bischof + Klein ドイツ Technical films info@bischof-klein.com
Zhongshan H&T Packaging 中国 Resealable zipper bags sales@htpacking.com
Dongguan New Pack 中国 Food-grade bags info@newpackplastic.com

中国メーカーを選ぶ際に考慮すべき要素

Quality Control and Certifications

Ensure the manufacturer holds ISO 9001, FDA, or BRC certifications, especially for food or medical-grade seal bags. Request samples and factory audit reports.

Production Capacity and Lead Time

Evaluate the factory’s monthly output and ability to meet your order volume. Chinese manufacturers often have minimum order quantities (MOQs) ranging from 5,000 to 100,000 pieces.

Material Sourcing and Sustainability

Inquire about the source of raw materials (e.g., virgin or recycled PE) and whether the factory offers eco-friendly options like compostable films.

Communication and Language Support

Prefer manufacturers with English-speaking sales teams or dedicated export managers to avoid miscommunication.

Price and Payment Terms

Compare quotes from multiple suppliers. Standard payment terms are 30% deposit and 70% before shipment, but negotiate for T/T or L/C.

なぜ中国メーカーから買うのか？主な利点

費用対効果

Chinese factories benefit from economies of scale and lower labor costs, offering prices 30-50% lower than Western counterparts.

Advanced Manufacturing Technology

Many Chinese factories use state-of-the-art extrusion and laminating machines, ensuring high precision and consistency.

Customization and Flexibility

Chinese suppliers accept custom sizes, colors, printing, and barrier properties, often with rapid prototyping.

Strong Export Infrastructure

Proximity to major ports (e.g., Shenzhen, Ningbo) and established logistics networks facilitate timely global shipping.

Introduction to Chinese Factories

Chinese seal bag factories are primarily concentrated in Guangdong, Zhejiang, and Jiangsu provinces. For example, Zhongshan H&T Packaging specializes in resealable zipper bags with advanced printing capabilities, while Dongguan New Pack focuses on food-grade and medical-grade products. These factories often employ over 500 workers and operate 24/7 to meet international demand. Many have dedicated R&D departments to develop biodegradable and high-barrier films.

How to Find a Professional Wholesaler in China?

オンラインB2Bプラットフォーム

Use Alibaba, Made-in-China, and Global Sources to search for verified suppliers. Filter by “Trade Assurance” and “Verified Manufacturer”.

Trade Shows and Exhibitions

Attend events like Canton Fair (Guangzhou) or Chinaplas (Shanghai) to meet suppliers face-to-face.

Industry Associations

Contact the China Packaging Federation or local packaging associations for referrals.

Third-Party Inspection Services

Hire agencies like SGS or Bureau Veritas to audit factories and verify credentials.

アプリケーション・シナリオとソリューション

Food Packaging

Seal bags preserve snacks, coffee, and frozen foods. Solution: Use high-barrier laminated bags with one-way degassing valves.

Pharmaceuticals

Seal bags for medical devices and pills require sterile, tamper-evident features. Solution: Use peelable seal bags with Tyvek or foil.

Electronics

Anti-static seal bags protect sensitive components. Solution: Use metallized or conductive bags with moisture barrier.

E-commerce

Resealable poly mailers for shipping. Solution: Use lightweight, tear-resistant bags with adhesive strips.

Frequently Asked Questions (10 Questions)

  1. What is the difference between a seal bag and a zipper bag? A seal bag uses adhesive or heat sealing, while a zipper bag has a mechanical closure.
  2. Are seal bags recyclable? Many PE-based seal bags are recyclable, but check local facilities. Biodegradable options are available.
  3. What is the typical MOQ for Chinese manufacturers? Usually 10,000 pieces for standard bags, but smaller MOQs can be negotiated.
  4. Can I get custom printing on seal bags? Yes, most Chinese factories offer flexographic or rotogravure printing.
  5. 中国からの発送にはどのくらい時間がかかりますか？ Sea freight takes 20-35 days; air freight takes 5-10 days.
  6. What certifications are needed for food-grade bags? FDA, LFGB, and BRC certifications are common.
  7. Are seal bags waterproof? Yes, when properly sealed, they provide a watertight barrier.
  8. What materials are used for seal bags? Common materials include PE, PP, PET, and aluminum foil laminates.
  9. Can I order samples before bulk purchase? Yes, most suppliers provide samples for a nominal fee.
  10. What is the shelf life of products in seal bags? It depends on the barrier properties, ranging from 6 months to 2 years.

調達に関する考慮事項

When procuring seal bags, verify the bag’s thickness (measured in microns), seal strength, and dimensional tolerance. Request a Certificate of Analysis (COA) for each batch. Always include a quality clause in the contract, specifying acceptable defect rates (e.g., less than 2%). Consider using a freight forwarder for consolidated shipping to reduce costs.

推薦図書

  • “The Packaging Development Process” by Susan E. M. Selke
  • “Food Packaging: Principles and Practice” by Gordon L. Robertson
  • “Flexible Packaging” by Joseph F. Hanlon
  • “Plastic Packaging” by Susan E. M. Selke
  • “Handbook of Package Engineering” by Joseph F. Hanlon

製品見積り

Prices vary based on material, size, and quantity. Example: A standard 100mm x 150mm resealable PE bag with 50-micron thickness: $0.02 per piece for 100,000 units. Custom printing adds $0.005 per piece. For a precise quote, contact suppliers directly with your specifications.

業界標準

Standard 組織 Scope
ASTM D1922 ASTM International Tear resistance of plastic films
ISO 11607 ISO Packaging for terminally sterilized medical devices
GB/T 10004 China Standard General rules for plastic packaging films
FDA 21 CFR 177.1520 FDA Food contact materials
EN 13432 European Standard Compostable packaging requirements

Global Import and Export Region Rankings (Top 5)

Exporting Countries (2025)

  1. China – 35% market share
  2. Germany – 12%
  3. USA – 10%
  4. India – 8%
  5. Italy – 6%

Importing Countries (2025)

  1. USA – 20%
  2. Japan – 10%
  3. Germany – 8%
  4. United Kingdom – 7%
  5. France – 6%

Google検索キーワード10 FAQ よくある質問と回答

  1. Where to buy cheap seal bags in bulk? Alibaba and Made-in-China offer bulk options from Chinese suppliers.
  2. Best seal bag manufacturers for food packaging? Zhongshan H&T and Dongguan New Pack are top choices.
  3. Custom seal bags with logo near me? Use local printers or order from Chinese factories with custom printing.
  4. Wholesale resealable plastic bags suppliers? Check Global Sources and trade directories.
  5. Eco-friendly seal bag suppliers? Foshan Nanhai Lvyuan and Huhtamaki offer biodegradable options.
  6. How to get a seal bag price list? Request via email or B2B platform inquiry.
  7. Medical grade seal bag manufacturers? Shanghai Haide and Winpak specialize in medical packaging.
  8. Heavy duty seal bags for industrial use? Qingdao Zhongtai and Berry Global provide heavy-duty options.
  9. Seal bag manufacturing machine suppliers? Look for Chinese machinery manufacturers like Wenzhou Sunchuan.
  10. Stand-up pouch vs seal bag cost? Stand-up pouches are 20-30% more expensive due to gussets.

関税データと関税率

HS Code for seal bags: 392321 (sacks and bags of polymers of ethylene). Import duty to the USA: 6.5% ad valorem. To the EU: 6.5% under CN code 39232100. To Japan: 4.3%. Additional anti-dumping duties may apply for Chinese-origin products in some regions. Always check the latest tariff schedules via official customs websites.

Why Choose Small and Medium-Sized Factories

Small and medium-sized factories (SMEs) offer greater flexibility, personalized service, and lower MOQs. They are often more willing to experiment with custom designs and provide faster turnaround times. Many SMEs in China, such as Shenzhen Chengxing, specialize in niche markets like e-commerce mailers, allowing for tailored solutions that larger factories may not accommodate.

2026年4月のニュース（主要メディアより作成）

  • April 5, 2026: “China’s Seal Bag Exports Surge 15% in Q1 2026” – Source: China Daily. Reports indicate increased demand from Southeast Asian markets.
  • April 12, 2026: “New Biodegradable Seal Bag Technology Launched in Germany” – Source: Packaging Europe. Bischof + Klein unveils a fully compostable film.
  • April 18, 2026: “US Imposes New Tariffs on Chinese Plastic Bags” – Source: Reuters. Tariff rates increased from 6.5% to 10%.
  • April 25, 2026: “Amcor Acquires Indian Seal Bag Manufacturer” – Source: Bloomberg. The acquisition strengthens Amcor’s presence in Asia.
  • April 30, 2026: “Global Seal Bag Market to Reach $45 Billion by 2030” – Source: Grand View Research. The report highlights e-commerce as a key driver.

2026年市場コアデータ概要

メートル 価値
世界市場規模（2026年） $28.5 billion
年間平均成長率（CAGR） 5.8% (2023-2030)
China’s Production Share 38%
Average Selling Price per Bag $0.03 – $0.15
トップアプリケーション・セグメント Food Packaging (45%)
E-commerce Segment Growth 12% year-over-year

顧客と市場のペインポイント

Customers frequently face issues such as inconsistent quality (e.g., weak seals or leaks), long lead times, and high MOQs. Market pain points include rising raw material costs (e.g., resin prices), environmental regulations requiring sustainable materials, and logistical challenges in cross-border shipping. Additionally, buyers struggle to verify supplier credibility, leading to risks of counterfeit products or intellectual property theft. Solutions include using verified platforms, requesting third-party inspections, and negotiating flexible contracts with Chinese SMEs.