WRPF / WRB Wax Removal Bags
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The most common Botanical Extraction Process uses chilled ethanol to
soak the plant material and extract the targeted ingredients. This method requires a winterization step which chills the crude extract down to temperatures between -20°C to -60°C to cause unwanted waxes and fats to solidify so they can be easily removed with a mechanical filtration step. Strainrite’s WRPF (Wax Removal Pre-Filter) and WRB (Wax Removal Bag) filters were developed to address a need to lower the cost of the dewaxing step and offer a product that will stand up to temperatures below -20°C. Strainrite’s Product Development Team worked closely with CBD and other botanical extractor customers to perform full scale process testing. This testing along with customer feedback were critical to determine the final combination of materials and optimal surface area to improve the end users’ overall cost of ownership and result in the lowest cost per gallon of final product. A typical wax removal process using Strainrite’s Wax Removal Pre-Filter and Wax Removal Bag is done in stages, using two to three WRPF (Wax Removal Pre-filter) stages upstream of a WRB (Wax Removal Bag), or the WRPF (Was Removal Pre-Filter) can be used upstream of an existing lenticular filter to remove the bulk of the solids load in the first step and allow the lenticular filter to perform the final polish step and stay on line longer, thus assuring final filtrate quality while keeping the cost per gallon produced as low as possible. |
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