When making PVC flex banners and dealing with the odor associated with PVC materials, you can use odor-neutralizing techniques and products to help reduce the smell. Here are some options:

1. Activated Charcoal:

   - Activated charcoal, available in various forms (such as bags or pellets), is effective at absorbing and neutralizing odors. Place activated charcoal near the PVC flex banner or within the production area to help mitigate the smell.

2. Baking Soda:

   - Baking soda (sodium bicarbonate) is a readily available and inexpensive odor-neutralizing agent. You can sprinkle it on the surface of the banner or place containers of baking soda in the production area to help absorb odors.

3. Commercial Odor Neutralizers:

   - There are various commercial odor-neutralizing products available that are designed to specifically tackle strong odors. Look for products labeled as odor eliminators or odor neutralizers.

   - Follow the manufacturer's instructions for using these products safely, as some may need to be sprayed directly on the banner or used in conjunction with air purifiers.

4. Air Purifiers with Activated Carbon Filters:

   - Air purifiers equipped with activated carbon filters can help remove odors from the air. Place an air purifier in the production area to continuously filter and clean the air.

5. Ventilation:

   - Ensure proper ventilation in the production area. Use fans or open windows and doors to promote air circulation, which can help dissipate odors more quickly.

6. Natural Ventilation:

   - If possible, let the PVC flex banners air out in a well-ventilated space before packaging or using them. This allows any residual odors to dissipate.

7. Masking Agents:

   - In some cases, you may choose to use masking agents or fragrances to cover up the PVC odor temporarily. However, be cautious with this approach, as it may not eliminate the underlying odor and could lead to a mixture of scents.

Remember that it's essential to prioritize safety when using odor-neutralizing products, especially in a production environment. Be mindful of any potential interactions between chemicals and the PVC material itself, as well as the safety of workers who may be exposed to these products.