Making the Waterproof Bag, How is difference between TPU And PVC Material

when you prepare to develop the waterproof bag, do you have some question on the what is the water resistance dry bag and waterproof bag ?  Does it same ? 

We have artcle on these 2 style dry bag in comparison. 

Today, here we introduce the material made for the waterproof dry bag. it is high frequency welded technology. It is mean the bag is seamless , there are no stitching line on the bag.  100% Waterproof.

Below is difference thicker TPU material, they are 0.55mm/0.45mm/0.3mm 

The Below is color swatch for 500D PVC

Regarding the differences between TPU (Thermoplastic Polyurethane) material and PVC (Polyvinyl Chloride) material for the purpose of making waterproof bags.

TPU and PVC are both popular materials used in the manufacturing of waterproof bags, but they have distinct characteristics that set them apart. TPU is a type of elastomer, while PVC is a synthetic plastic polymer. Here are some key differences between the two materials:

1. Flexibility:

TPU is known for its exceptional flexibility. It can be easily stretched, making it more resistant to tearing or cracking. On the other hand, PVC is comparatively less flexible and can be prone to cracking under strain.

2. Durability:

TPU is highly durable and can withstand extreme weather conditions, including temperature variations and UV exposure. It retains its shape and does not degrade easily. In contrast, PVC may become brittle over time and can discolor when exposed to sunlight.

3. Environmental Impact:

TPU is considered a more environmentally friendly choice compared to PVC. TPU is recyclable and does not contain any harmful substances such as chlorine or phthalates. PVC, on the other hand, is known for releasing toxic chemicals during production and disposal, which can have negative effects on the environment.

4. Comfort and Texture:

TPU has a smoother and more comfortable feel compared to PVC. It is also less likely to cause skin irritation. PVC, on the other hand, can be rougher in texture and may cause discomfort during prolonged use.

When it comes to waterproof bags, the choice between TPU and PVC will depend on your specific needs and preferences. Here are some advantages and disadvantages of using each material:

Advantages of TPU for waterproof bags:

- Excellent flexibility and resistance to tearing or cracking
- High durability and resistance to extreme weather conditions
- Environmentally friendly and recyclable
- Smooth and comfortable texture

- Low Temperature endura

Disadvantages of TPU for waterproof bags:

- Generally higher cost compared to PVC
- Limited color options and potential for discoloration over time

Advantages of PVC for waterproof bags:

- Lower cost compared to TPU
- Wide range of color options and designs available
- Lighter weight compared to TPU

Disadvantages of PVC for waterproof bags:

- Less flexibility and prone to cracking under strain
- Environmental concerns due to the release of toxic substances during production and disposal

In conclusion, TPU offers superior flexibility, durability, and environmental friendliness,Low temerature endura. More Softer than PVC.  while PVC provides a more cost-effective option with a wider range of design choices. 

I hope this information helps you make an informed decision for your waterproof bag requirements.