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Poly bag manufacturers

I have found results from1000+products and600+suppliers aboutPoly bag

Qingdao Shilongmao Packaging Co., Ltd.mic-icon
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Factory Plastic Wholesale White Shipping Mailer Bag Envelope Poly Mailer Bag

Factory Plastic Wholesale White Shipping Mailer Bag Envelope Poly Mailer Bag

US$0.01-0.10
2 Pieces(MOQ)
Sample Available
Factory Direct Multicolor LDPE Waterproof Courier Clothes Poly Bags

Factory Direct Multicolor LDPE Waterproof Courier Clothes Poly Bags

US$0.01-0.10
2 Pieces(MOQ)
Sample Available
Printed Logo Waterproof Poly Courier Shipping Mailer Bags

Printed Logo Waterproof Poly Courier Shipping Mailer Bags

US$0.01-0.10
2 Pieces(MOQ)
Sample Available
Custom Logo Poly Mailer Bags for Clothing Plastic Shipping Envelope Packaging Sacks

Custom Logo Poly Mailer Bags for Clothing Plastic Shipping Envelope Packaging Sacks

US$0.01-0.10
2 Pieces(MOQ)
Sample Available
Custom Biodegradable Compostable Poly Mailer Clothing Shipping Packaging Bag

Custom Biodegradable Compostable Poly Mailer Clothing Shipping Packaging Bag

US$0.01-0.10
2 Pieces(MOQ)
Sample Available
Wholesale Mail Courier Envelopes Courier Bags Express Logistics Plastic Mailing Bags Poly Express Biodegradable Mailing Bags

Wholesale Mail Courier Envelopes Courier Bags Express Logistics Plastic Mailing Bags Poly Express Biodegradable Mailing Bags

US$0.01-0.10
2 Pieces(MOQ)
Sample Available
Custom Logo Waterproof Poly Express Mail Bags with Handle

Custom Logo Waterproof Poly Express Mail Bags with Handle

US$0.01-0.10
2 Pieces(MOQ)
Sample Available
High Quality Custom Logo Pink Poly Mailer Plastic Shipping Printed Bags

High Quality Custom Logo Pink Poly Mailer Plastic Shipping Printed Bags

US$0.01-0.10
2 Pieces(MOQ)
Sample Available
Bubble Mailer Custom Printed Poly Bags for Clothing Sample Shipping Plastic Logo

Bubble Mailer Custom Printed Poly Bags for Clothing Sample Shipping Plastic Logo

US$0.01-0.10
2 Pieces(MOQ)
Sample Available
Wholesale Custom LDPE Matte Printed Large Poly Mailing Courier Bags Plastic Envelopes

Wholesale Custom LDPE Matte Printed Large Poly Mailing Courier Bags Plastic Envelopes

US$0.01-0.10
2 Pieces(MOQ)
Sample Available
Custom Logo Eco-Friendly Disposable Poly Mail Shipping Packaging Bags

Custom Logo Eco-Friendly Disposable Poly Mail Shipping Packaging Bags

US$0.01-0.10
2 Pieces(MOQ)
Sample Available
Waterproof Self-Adhesive Poly Mailing Bags for Cosmetics & Shoes

Waterproof Self-Adhesive Poly Mailing Bags for Cosmetics & Shoes

US$0.01-0.10
2 Pieces(MOQ)
Sample Available
Custom Mailing Packaging Poly Mailing Bubble Strong Seal Envelope Packaging Bag

Custom Mailing Packaging Poly Mailing Bubble Strong Seal Envelope Packaging Bag

US$0.01-0.10
2 Pieces(MOQ)
Sample Available
Custom Logo Poly Mailer Plastic Shipping Envelope Courier Packaging Bag Durable Light

Custom Logo Poly Mailer Plastic Shipping Envelope Courier Packaging Bag Durable Light

US$0.01-0.10
2 Pieces(MOQ)
Sample Available
Custom Zip Lock Plastic Packing Clear Poly Small Mini Zippered Packaging Resealable Ziplock Bags PE Zipper Bag with Logo

Custom Zip Lock Plastic Packing Clear Poly Small Mini Zippered Packaging Resealable Ziplock Bags PE Zipper Bag with Logo

US$0.02-0.05
2 Pieces(MOQ)
Sample Available

Sourcing guidance for poly bag

How to choose the right material for poly bags based on application?

Selecting the correct polymer is critical for performance. LDPE (Low-Density Polyethylene) is ideal for general packaging due to its high flexibility and tear resistance. HDPE (High-Density Polyethylene) is preferred for heavy-duty applications or grocery bags because of its superior tensile strength and 'crinkle' texture. For high-clarity retail packaging, PP (Polypropylene) or BOPP should be used as they offer a crystal-clear finish and excellent moisture barrier properties.

What are the key technical specifications to verify before bulk purchasing?

Buyers must specify the Micron (mu) or Mil thickness to ensure the bag can support the intended weight; for example, standard retail bags are usually 20-30 microns, while industrial liners require 50+ microns. Additionally, confirm the sealing strength (bottom seal vs. side seal) to prevent leakage and specify the COF (Coefficient of Friction) if the bags will be used on automated packaging lines to ensure they slide or grip correctly.

What compliance standards and environmental regulations apply to poly bags?

For the US market, ensure compliance with FDA 21 CFR 177.1520 if the bags are for food contact. For the EU, products must meet REACH and EC No 1935/2004 standards. Given global plastic bans, it is highly recommended to source bags with GRS (Global Recycled Standard) certification or those made from biodegradable materials (PLA/PBAT) that meet ASTM D6400 or EN 13432 compostability standards.

How can I ensure print quality for customized poly bags?

Most professional suppliers on Made-in-China.com use gravure or flexographic printing. To ensure accuracy, provide Pantone color codes and high-resolution AI or PDF vector files. Request a digital proof or a physical pre-production sample to verify the ink adhesion (tape test) and alignment, especially for multi-color designs or barcodes that require high scannability.

Cross-Border Procurement Risks and Strategies for Poly Bags

How can I mitigate the risk of receiving 'under-gauge' (thinner than ordered) products?

This is a common industry risk. You should include a specific thickness tolerance (e.g., +/- 5%) in your contract. Use a third-party inspection service to measure thickness with a digital micrometer during the mid-production or pre-shipment phase. On Made-in-China.com, prioritize Audited Suppliers who provide transparent material data sheets.

What are the best shipping strategies to reduce costs for lightweight but bulky poly bags?

Poly bags are often high-volume but low-weight. To optimize costs, request vacuum compression packing to reduce the cubic meter (CBM) volume. For large orders, FCL (Full Container Load) is significantly more cost-effective than LCL. Ensure the supplier uses heavy-duty 5-layer corrugated master cartons to prevent the bottom boxes from collapsing during long-term sea freight stacking.

How do I handle international trade policy changes regarding plastic taxes?

Many countries (like the UK and parts of the EU) have implemented Plastic Packaging Taxes on items with less than 30% recycled content. You must ask your supplier for a Certificate of Analysis (COA) or a Recycled Content Declaration to avoid heavy fines or import delays at customs. Always verify the HS Code (typically 392321) with your local customs broker before shipping.

What security measures should be taken for transaction safety?

Always conduct transactions through secure payment channels provided by reputable platforms. Avoid direct transfers to private bank accounts. Utilize Escrow-based payment services where the funds are only released to the supplier after you confirm the Bill of Lading (B/L) or inspection report. This ensures your capital is protected against non-delivery or quality discrepancies.

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