What are the disadvantages of composite packaging bags ,and what are the solutions?

I. Three Core Disadvantages of Composite Packaging Bags

1. Dual Thresholds of Cost and Technology: Complex multi-material composite processes require high equipment investment, with unit prices 30%-50% higher than single-layer packaging, making it unaffordable for small and micro enterprises. Production demands precise control of bonding strength, heat-sealing temperature and other parameters, leading to unstable yield rates in small workshops.
2. Environmental and Recycling Challenges: Multi-layer materials are difficult to separate, resulting in a recycling rate of less than 20%.Some materials with chemical coatings are non-recyclable, aligning with the high pressure of environmental policies.
3. Safety and Adaptability Risks: Adhesives may undergo chemical migration when in high-temperature environments or long-term contact with food. The high-temperature resistance limit is mostly below 135℃, and delamination is prone to occur in strong acid or alkali environments, restricting application scenarios.

II. Targeted Practical Solutions (Prioritizing Implementability and Low Cost)

1. Cost Optimization Plans: Adopt a mix of bio-based and traditional materials to balance performance and cost. Reduce unit costs through bulk customization, and small and medium-sized brands can pursue joint procurement.
2. Breakthroughs in Environmental Recycling: Use degradable composite materials (e.g., bio-based PE + nylon) and obtain green certifications. Cooperate with professional recycling enterprises to establish a "use-recycle-regenerate" closed loop.
3. Safety and Adaptability Upgrades: Strictly select adhesives and substrates complying with FDA and GB 4806 standards. Customize according to product characteristics (e.g., high-temperature resistant composite films for high-temperature products, special materials for chemicals).

III. Pitfall Avoidance Guide and Industry Trends

1. Selection Pitfalls to Avoid: Clarify product storage and transportation conditions to avoid blind pursuit of high composite layers. Prioritize suppliers with quality control systems to reduce the risks of delamination and leakage.
2. Future Trends: Accelerated replacement of environmentally friendly materials, with recyclable and degradable composite Bags becoming mainstream. Intelligent production improves yield rates and lowers technical thresholds.