Comparative analysis of PVC artificial leather backpacks and TPU and EVA materials

The following is a comparative analysis of PVC artificial leather backpacks and TPU and EVA material backpacks:

1. Material characteristics
PVC artificial leather
Definition: PVC artificial leather is the abbreviation of polyvinyl chloride artificial leather. It is made by coating PVC resin, plasticizer, stabilizer and other additives on the fabric, or by coating a layer of PVC film, and then processed through a certain process.

Characteristics:
High strength: The product has high strength and can meet the durability requirements of the backpack.
Low cost: Compared with genuine leather or other high-end synthetic materials, PVC artificial leather has a lower cost.
Good waterproofness: It has good waterproof performance and is suitable for outdoor or humid environments.
Good decorative effect: The pattern is rich in color and has a good decorative effect.
Poor breathability: The breathability is poor, and long-term use may produce a stuffy feeling.
Hardening at low temperature: It will harden in a low temperature environment, affecting flexibility and comfort.

TPU
Definition: TPU material, also known as thermoplastic polyurethane, is an environmentally friendly material.
Features:
High elasticity: elongation can reach more than 500%, with excellent resilience and wear resistance.
Low temperature resistance: can maintain good elasticity and flexibility at minus 40℃.
Oil resistance: can be used for a long time in various oils without damage.
Water resistance: can be soaked in water for a long time without damage.
Weather resistance: can be used for a long time in various climatic conditions without damage.
Higher price: compared with PVC artificial leather, TPU material is usually more expensive.

EVA
Definition: The chemical name of EVA is ethylene-vinyl acetate copolymer, which is a high molecular polymer.
Features:
Light and soft: EVA material is light and soft, suitable for making lightweight backpacks.
Aging resistance: has good aging resistance and can extend the service life of the backpack.
Water-resistant and sound-insulating: EVA is a closed cell structure, does not absorb water, has moisture-proof effect, and has good sound insulation effect.
Thermal insulation: The cell structure makes EVA also have good thermal insulation and heat preservation properties.
Easy to process: EVA material is easy to process and can be hot pressed, cut, and laminated.
Moderate price: The price of EVA material is relatively moderate, but it may vary depending on the purpose and quality.

2. Application scenarios
PVC artificial leather backpack:
Widely used in various outdoor, leisure, travel and other scenarios.
It is popular because of its waterproof, durable, low cost and other characteristics.

TPU backpack:
Suitable for special scenarios that require high elasticity, low temperature resistance, and oil resistance.
Such as sports and fitness, outdoor adventures, etc.

EVA backpack:
Suitable for lightweight and soft backpack production.
Such as daily commuting, short trips and other scenarios.

3. Summary of advantages and disadvantages
PVC artificial leather backpack:
Advantages: low cost, good waterproofness, good decorative effect.

TPU backpack:
Advantages: high elasticity, low temperature resistance, oil resistance, water resistance, weather resistance.

EVA backpack:
Advantages: light and soft, aging resistance, water resistance and sound insulation, heat preservation, easy processing.