Your Packaging Bags Are Failing Because You Ignored These 4 Critical Checks

1. Barrier layer material and thickness must be clearly stated!

× Common tactics: "Aluminum foil bag" or "high barrier" without specifying numerical values.

√ Directly ask: What is the specific material? (Aluminum plating/aluminum foil/EVOH) What is the thickness in μm?

⚪ Self-inspection: Aluminum foil is too stiff and has creases; EVOH is too soft and lacks a metallic feel; measure the overall thickness with calipers to deduce the difference.

2. Load-bearing capacity and puncture resistance require actual measured data!

× Common tactics: "Can hold 5 catties" or "Excellent load-bearing capacity" without reports.

√  Directly ask: What is the vertical load-bearing capacity after filling with my product? What is the puncture resistance? What about the effect of low temperatures?

⚪ Self-inspection: Does not break after hanging for 24 hours; does not break when a pen tip punctures the corner; for hard objects, thicker sealing is required.

3. Sealing strength, to prevent leaks or fake seals in bulk.

× Common tactics: "Strong seal" without parameters; perfect sample but failed bulk.

√  Directly ask: What is the sealing strength value? Heat sealing temperature/pressure? How to ensure no leaks?

⚪ Self-inspection: Randomly select 10-20 bags and tear them by hand (they should have a pulling sensation); fill with water and squeeze without leakage; the seal should be smooth and free of air bubbles.

4. The material must be suitable for your product!

× Trick: Generic materials masquerading as food-grade/acid and alkali resistant/antistatic

√  Ask directly: Which standard does it meet (e.g., GB 4806)? Provide an authoritative test report.

⚪ Self-inspection: Verify the report; smell the food bags after refrigerating for odor; test the antistatic bags for dust absorption; reject bags with a pungent odor immediately.

5. Batch quality control standards + how to compensate for non-conforming products?

× Trick: "Strict quality control" without procedures, shirking responsibility when problems arise.

√  Ask directly: Sampling ratio/items/pass rate? Rework/replacement/compensation should be written into the contract.

⚪ Self-inspection: Request sampling records; conduct sampling inspections of ≥3% upon receipt; retain samples for each batch to protect your rights.

Summary: Thoroughly inquire about parameters, thoroughly check goods, and keep proper documentation. Don't blindly trust samples, don't believe verbal promises; these 5 questions will filter out 90% of unreliable suppliers.