Flat Bag (Plain Bag): A Comprehensive Global Industry Guide for 2026

Introduction to Flat Bags (Plain Bags)

A flat bag, commonly referred to as a plain bag, is a simple, unbranded, and unprinted packaging solution typically made from polyethylene (PE), polypropylene (PP), or paper. These bags are characterized by their flat, rectangular shape without gussets or side folds. They are widely used in retail, food service, and industrial sectors for storing and transporting a variety of goods, including groceries, clothing, hardware, and documents. The global demand for flat bags remains robust due to their cost-effectiveness, versatility, and the growing e-commerce sector requiring efficient packaging.

Global Top 10 Flat Bag Suppliers and Manufacturers

Based on production capacity, revenue, and global reach, the following are the top 10 flat bag manufacturers worldwide.

等级	公司名称	国家	预计年收入（美元）
1	Novolex (Dixie, Bagcraft)	美国	$3.5 Billion
2	Berry Global Inc.	美国	$13 Billion
3	Amcor plc	Australia/Switzerland	$15 Billion
4	希悦尔公司	美国	$5.5 Billion
5	Interplast Group	美国	$2 Billion
6	Pactiv Evergreen	美国	$5.3 Billion
7	Polythene UK	英国	$150 Million
8	蒙迪集团	奥地利	$9 Billion
9	Uflex Ltd.	印度	$18 亿美元
10	Huhtamaki Oyj	芬兰	$4.5 Billion

Top 10 Flat Bag Suppliers and Factories in China

China is the world’s largest producer of plastic flat bags. The following are the top 10 Chinese manufacturers known for quality and export volume.

等级	公司名称	地点（省）	主要产品
1	Zhongshan Hongsu 塑料 Products Co., Ltd.	广东	PE Flat Bags
2	Qingdao Yongcheng Plastic Co., Ltd.	山东	PP & PE Bags
3	Dongguan Lvheng Plastic Products Co., Ltd.	广东	Biodegradable Flat Bags
4	Anhui Hengxin Environmental Protection Technology Co., Ltd.	安徽	Paper Flat Bags
5	Shanghai Jiuzhou 包装 有限公司.	上海	Industrial Flat Bags
6	Fujian Nanan Xinming Plastic Co., Ltd.	福建	Retail Flat Bags
7	Zhejiang Zhengda Plastic Co., Ltd.	浙江省	Custom Flat Bags
8	Shenzhen Yili Packaging Co., Ltd.	广东	E-commerce Flat Bags
9	Jiangsu Huafeng Plastic Co., Ltd.	江苏省	Heavy-duty Flat Bags
10	Hebei Huaye Plastic & Rubber Co., Ltd.	河北	Food-grade Flat Bags

Global Supplier and Factory Introduction with Contact Emails

Below is a detailed table of key global suppliers, including their primary contact information for procurement inquiries.

公司名称	专业	联系电子邮件	网站
Novolex	Food service & retail bags	info@novolex.com	novolex.com
Berry Global	Custom polyethylene bags	customerservice@berryglobal.com	berryglobal.com
Amcor	Sustainable flexible packaging	apac.sales@amcor.com	amcor.com
密封空气	Protective packaging	info@sealedair.com	sealedair.com
Interplast Group	Polyethylene films & bags	sales@interplast.com	interplast.com
Pactiv Evergreen	Food packaging bags	contact@pactivevergreen.com	pactivevergreen.com
Polythene UK	Polythene flat bags	sales@polytheneuk.co.uk	polytheneuk.co.uk
蒙迪集团	Paper & plastic bags	info@mondi.com	mondi.com
Uflex Ltd.	Flexible packaging solutions	inquiry@uflexltd.com	uflexltd.com
Huhtamaki	Eco-friendly packaging	communications@huhtamaki.com	huhtamaki.com

选择中国制造商时应考虑的因素

Quality Control and Certifications

Ensure the manufacturer holds ISO 9001, FDA (for food contact), or BRC certifications. Request samples and factory audit reports before bulk orders.

Minimum Order Quantities (MOQs)

Chinese factories often have high MOQs (e.g., 10,000 pieces). Negotiate lower MOQs for trial orders or seek factories specializing in small batches.

材料采购

Verify the source of raw materials (virgin vs. recycled). Ask for material safety data sheets (MSDS) to ensure compliance with your target market’s regulations.

生产周期

Standard lead times range from 15 to 45 days. Factor in Chinese public holidays (e.g., Chinese New Year) which can cause significant delays.

Communication and Language

Prefer factories with dedicated English-speaking sales teams. Use platforms like Alibaba’s Trade Assurance to mitigate communication risks.

为何从中国制造商处购买？主要优势

成本效益

China offers the lowest production costs due to economies of scale, cheaper labor, and a mature supply chain for raw materials like polyethylene.

Massive Production Capacity

Chinese factories can produce millions of flat bags per day, ensuring supply stability for large-scale buyers.

定制选项

From thickness (microns) to size and color, Chinese manufacturers offer extensive customization without significant price premiums.

先进技术

Many factories use high-speed extrusion and printing machines, ensuring consistent quality and faster turnaround times.

出口经验

Chinese suppliers are highly experienced with international shipping, documentation, and customs clearance, simplifying the import process.

中国工厂简介

Chinese flat bag factories are concentrated in the Pearl River Delta (Guangdong) and Yangtze River Delta (Zhejiang, Jiangsu). These factories range from large-scale automated facilities producing billions of bags annually to specialized workshops focusing on niche markets like biodegradable or anti-static bags. Many have invested heavily in environmentally friendly production lines to meet global sustainability standards. For instance, factories in Anhui are leading in paper flat bag production, while Guangdong excels in multi-layer plastic bags for heavy-duty use.

如何在中国找到专业批发商？

使用 B2B 平台

Alibaba.com, Made-in-China.com, and Global Sources are the primary platforms. Filter suppliers by “Verified” status, transaction history, and response rate.

参加贸易展

Visit the Canton Fair (Guangzhou) or the China International Packaging Exhibition (Sino-Pack) to meet suppliers face-to-face.

聘请采购代理

Professional agents in Yiwu or Guangzhou can vet factories, negotiate prices, and inspect quality on your behalf.

检查行业协会

Contact the China Plastics Processing Industry Association (CPPIA) for a list of reputable member factories.

应用场景和解决方案

Retail and Grocery

场景 Supermarkets need low-cost, high-strength flat bags for customer purchases. 解决方案 Use 20-micron HDPE flat bags with die-cut handles for easy carrying.

电子商务航运

场景 Online retailers require lightweight, tear-resistant bags for apparel. 解决方案 Laminated poly mailers with a flat bag base, offering water resistance and branding options.

Food Service

场景 Bakeries need grease-proof bags for pastries. 解决方案 Wax-coated paper flat bags or LDPE bags with FDA approval.

Industrial Packaging

场景 Hardware stores need heavy-duty bags for nuts, bolts, and tools. 解决方案 50-micron LDPE or co-extruded flat bags with high puncture resistance.

常见问题（10 个常见问题）

1. What is the difference between a flat bag and a gusset bag? A flat bag has no side folds, making it ideal for flat items. A gusset bag has expanding sides for bulky items.
2. What materials are flat bags made from? Common materials include LDPE, HDPE, PP, and paper. LDPE is soft and flexible; HDPE is crinkly and strong.
3. Are flat bags recyclable? Yes, most polyethylene flat bags are recyclable through store drop-off programs. Paper flat bags are widely recyclable in curbside bins.
4. What is the standard thickness of a flat bag? Retail bags are typically 15-25 microns; industrial bags range from 30-80 microns.
5. Can I get custom printed flat bags from China? Yes, Chinese manufacturers offer flexographic or rotogravure printing with up to 8 colors.
6. What is the MOQ for custom flat bags? Typically 5,000 to 10,000 pieces for standard sizes, but can be lower for simple designs.
7. 从中国发货需要多长时间？ Sea freight takes 20-35 days; air freight takes 5-10 days.
8. Are biodegradable flat bags available? Yes, many Chinese factories produce PLA, PBAT, or oxo-degradable flat bags.
9. What certifications are needed for food contact? FDA (USA), EU 10/2011 (Europe), and GB 4806.7 (China) are essential.
10. How do I test the quality of a flat bag? Check tensile strength, seal strength, and thickness uniformity. Request a pre-shipment inspection.

采购考虑因素

When purchasing flat bags, always request a proforma invoice detailing the unit price, MOQ, payment terms (e.g., 30% deposit, 70% before shipment), and delivery timeline. Use a third-party inspection service like SGS or Bureau Veritas to conduct a random sampling inspection before payment. Ensure the packaging is robust to prevent damage during transit. Finally, clarify the Incoterms (FOB, CIF, or EXW) to avoid unexpected logistics costs.

Recommended Books on Flat Bag Manufacturing and Sourcing

• Plastic Films: Technology and Packaging Applications by John R. Wagner Jr. – Covers material science and production processes.
• The Sourcing Solution: A Step-by-Step Guide to Finding Suppliers in China by Linda L. – Practical advice for international buyers.
• Packaging Technology: Fundamentals, 材料, and Processes by Anne Emblem – Explains bag design and material selection.
• Global Supply Chain Management: A Guide for Importers by David Simchi-Levi – Includes risk management and logistics.

Product Pricing (Estimated 2026)

类型	Size (cm)	Thickness (micron)	每 1,000 件的价格（美元）
HDPE Retail Flat Bag	30×40	18	$8 – $12
LDPE Food Flat Bag	25×35	25	$15 – $20
Paper Flat Bag (Kraft)	20×30	80 gsm	$25 – $35
Biodegradable PLA Flat Bag	30×45	20	$30 - $45
Heavy-duty Industrial Bag	50×60	60	$50 - $70

行业标准

Flat bags must comply with various international standards. In the USA, ASTM D4635 for polyethylene bags and FDA 21 CFR 177.1520 for food contact. In Europe, EN 13432 for compostable bags and EU Regulation 10/2011 for plastic materials. In China, GB/T 21661-2008 for plastic shopping bags and GB 4806.7-2016 for food contact materials. Always request compliance certificates from your supplier.

Top 5 Global Export and Import Regions for Flat Bags

等级	出口地区	市场份额	进口地区	市场份额
1	中国	42%	美国	28%
2	德国	12%	德国	15%
3	印度	9%	英国	10%
4	美国	8%	法国	8%
5	意大利	6%	日本	7%

谷歌搜索商业术语：10 个常见问题问答

1. What is a plain poly bag? A plain poly bag is a simple, unprinted polyethylene bag used for storage and packaging.
2. How to source flat bags from Alibaba? Search for “flat bag manufacturer,” filter by “Verified Supplier,” and request quotes from at least 5 suppliers.
3. What is the HS code for flat plastic bags? The HS code is 39232100 for polyethylene bags.
4. Are flat bags eco-friendly? Yes, if made from recycled materials or biodegradable plastics like PLA.
5. What is the difference between LDPE and HDPE flat bags? LDPE is soft and stretchy; HDPE is stiff and has a crinkly feel.
6. How to calculate flat bag cost? Cost = (Material cost + Labor + Overhead) * Profit margin. Use online calculators for estimates.
7. Can flat bags be used for vacuum sealing? Yes, but only specialized embossed flat bags are designed for vacuum sealing.
8. What is the standard size for retail flat bags? Common sizes are 12×15 inches, 14×18 inches, and 16×20 inches.
9. How to find a reliable flat bag supplier in China? Check trade assurance, read reviews, and request video calls of the factory floor.
10. What are the shipping costs for flat bags from China? Sea freight costs $1,500-$3,000 per 20-foot container depending on the destination.

海关数据和关税税率

For HS code 39232100 (polyethylene bags), the US import tariff is 3% ad valorem. The EU imposes a 6.5% duty. China’s export rebate is 13% for plastic bags. Importers must provide a bill of lading, commercial invoice, packing list, and certificate of origin. In 2025, the US proposed a 25% tariff on Chinese plastic products, which may be fully implemented by 2026. Check the U.S. International Trade Commission (USITC) database for real-time updates.

为什么选择中小型工厂？

Small and medium-sized factories (SMEs) in China offer greater flexibility in MOQs, faster response times, and a willingness to innovate. They often provide more personalized service and are quicker to adopt new technologies like water-based printing. While large factories have economies of scale, SMEs are ideal for startups and niche markets requiring custom sizes or eco-friendly materials. They also tend to have lower overhead costs, translating to competitive pricing for smaller orders.

Comprehensive Media News: April 2026

2026 年 4 月 2 日 “China’s Plastic Bag Exports Surge 18% in Q1 2026 as Global Demand Rises” – 路透社. The report highlights increased demand from Southeast Asia and Africa.

2026 年 4 月 10 日 “EU Imposes New Recycling Label Requirements for Flat Bags” – Packaging Europe. All flat bags sold in the EU must now display a recycling logo and material type.

2026 年 4 月 15 日： “Biodegradable Flat Bag Market to Reach $2.5 Billion by 2030” – 大观园研究中心. The study notes a CAGR of 8.5% driven by plastic bans.

2026 年 4 月 22 日 “US Tariffs on Chinese Plastic Bags Delayed Until 2027” – 彭博社. The delay provides temporary relief for US importers.

2026 年 4 月 28 日 “Indian Flat Bag Manufacturers Expand Capacity to Meet Export Demand” – The Economic Times. India is positioning itself as an alternative to China.

2026 年市场核心数据概览

• 全球市场规模： $12.5 Billion (projected).
• Annual Growth Rate (CAGR): 4.2% (2024-2030).
• Top Consuming Region: Asia-Pacific (45% of global demand).
• Material Share: HDPE 55%, LDPE 30%, Paper 10%, Biodegradable 5%.
• Average Export Price from China: $1.20 per kg for HDPE bags.
• Number of Active Chinese Exporters: Over 8,000 registered on Alibaba.

客户和市场痛点

Price Volatility of Raw Materials

Fluctuations in crude oil prices directly impact polyethylene costs, making budget planning difficult for buyers.

Environmental Regulations

Increasing bans on single-use plastics in the EU, Canada, and parts of the US force buyers to switch to paper or biodegradable options, which are 30-50% more expensive.

质量不一致

Many buyers report variations in thickness and seal strength between batches from the same Chinese supplier.

Long Lead Times

Peak seasons (e.g., before Chinese New Year) can extend lead times to 60 days, causing stockouts.

Hidden Costs

Unexpected costs for custom molds, printing plates, or packaging can add 10-20% to the initial quote.