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Product description
Alginate rubber is an easy-to-use powder-based moulding material. Thanks to a new naturally biodegradable fibre, this alginate is more tear-resistant than the products currently available on the market. Alginate powder is skin-friendly, making it ideal for taking impressions of body parts. In addition, the rubber is highly suitable for medical applications. You can easily purchase the alginate powder online in the packaging size that suits your needs. Below, we explain how to work with this product!
Application
Alginate is suitable for making, among other things, face prints or other body parts such as hands and feet. When the mould is ready, it can only be poured with water-curing products, such as porcelain plaster. Acrylic Prima is also an excellent product for casting the mould. For an adult hand you will need about 1 kg of mixture in total. This can be easily prepared in a mixing cup and mixed with a spiral mixer. A mould made of alginate is suitable for moisture-resistant resin systems such as plaster or Acrystal but NOT for epoxy. Use skin-friendly silicone rubber for epoxy bodycasting.
Note: the mixing ratio of Acrystal is 2.5 parts powder and 1 part liquid and not 5 parts powder and 1 part water, as stated in the video.
Directions for use
Alginate can be processed at room temperature. Measure and weigh the correct amounts of water and alginate powder. The mixing ratio is 1 part powder to 3 parts water by weight. The table below shows an example.
Note: sprinkle the powder into the water, do not do it the other way round!
Water
Alginate powder
Total
750 grams
250 grams
1000 grams
1200 grams
400 grams
1600 grams
2000 grams
660 grams
2660 grams
After measuring and weighing, stir the alginate powder and the water with a small mixer at a low speed of no more than 200-300 rpm. Manual mixing is also possible, but we recommend this only for small quantities as mechanical mixing gives a better result. Then apply the mixture to the skin or model in a flowing motion. This way you avoid air bubbles on the surface.
The processing time is 4-5 minutes at a temperature of 20°C. The binding time is approximately 8-10 minutes. These times are strongly influenced by the temperature. Cold water slows down the process and warm water speeds it up. The fluidity of alginate can be adjusted by changing the ratio of powder and water. More water gives a thinner alginate with a longer processing time and demolding time. Less water ensures the opposite.
Buy alginate powder
You can easily buy the alginate powder online at Polyestershoppen.com. The packaging units are 0.5 kg, 1 kg and 4 kg. If you order before 5 pm CET (Central European Time), your order will be shipped the same day! Do you have questions about the use of alginate powder and can't find your way with our video? Then feel free to contact us by calling +3185 0220090. We are happy to help.
Product properties
The key technical properties clearly listed in one place.
Article number
ACR000673
The technical product category, such as primer, resin, hardener or cleaner. It explains the product's purpose and helps you find other products with a similar function.
Alginate rubber
Mixing ratio indicates how much of each component is needed, for example resin (A) and hardener (B). A ratio of 100:50 by weight means 100 grams of A to 50 grams of B; by volume you might use millilitres. Weight and volume ratios are not necessarily the same because the components may have different densities. Accurate measuring is important for proper curing.
1:3 (by weight; powder:water)
The tasks a product is intended for, such as laminating, casting, bonding, sealing or protecting. Products intended for the same application can differ considerably in processing, curing time and final properties.
Making a plaster hand
Net contents
15 kg, 1 kg, 2 kg, 4 kg, 500 g
Working time is the period during which a product remains workable after mixing or activation, usually given in minutes at a specified temperature, often 20 °C. With reactive resins, the chemical reaction also continues in the mixing container, and larger quantities or higher temperatures can shorten this time. Working time is different from gel time and full curing time.
Approximately 4-5 minutes (at 20 °C)
Safety information
Read the warnings and use appropriate protective equipment before handling the product.
