Natural rubber is mainly collected from rubber tree and processed. Hevea rubber tree of Brazil is the main source. To harvest, use knife to cut bark and collect its liquids. The preliminary processes inclue filtering and extraction. This is the material to produce rubber liquid and then there are processes of filtering, bubble extinguishing, crystallizing, smoking, and wind drying to make it raw rubber. Isoprene is the main element of nature rubber which has excellent resilience and elasticity. The special physical properties make natural rubber not likely for artificial rubber to replace it. Natural rubber is categorized by its appearance to RSS, ADS, SKIM LATEX. Technical assortment such as SMR, STR are recently introduced.
SJ Croup has more than 30 years experience and technology on natural rubber open cell foam. From consumers products to the application of high technique natural compound materials, they are all within our coverage. Possessing the most advance microfilm foam technique around the world, we developed 0.05mm microfilm foam for medical industry; the technique of open cell foam combining PLA and nature rubber make us the world leader in the field, making the nature rubber material not only to be biodegradable but also applying PLA property to make product with more environmental efficiency. Continuous research and development on natural foam materials keep us growing. To date, SJ Group natural materials foam factory has become the world’s second largest nature rubber open cell foam maker.
It is a natural and environmental material with good non-slip effect, soft and comfort, good resilience, high temperature resistance and available with heat transfer, microfilm foam with absorption of sweat, respiratory, patented non-glue adhesive technique, biodegradable, non-toxic, recyclable and grinding reprocess, zero pollution, and cold tolerance…etc.
Yoga mat made by nature rubber, in addition to the best non-slip effect, it has an excellent resilience, invincible kind of anti- compressionset, and incomparable cushion effect. It is available to clean with lukewarm water or mild soap hanging or laying flat to wind dry. Made by nature rubber, a new resource extracted from rubber tree juice, contents no chlorine and without ozone depleting substance, it is the best choice for Yogi who loves earth.
| Characteristics | NR |
|---|---|
| 1. Polymers | NATURAL RUBBER SPONGE |
| 2. COMPRESSION DEFLECTION AT 25% PSI | 5~65 |
| 3. COMPRESSION SET AT 50% DEFLECTION AT 160 F | 5%~15% -MAXIMUM |
| 4. TEMPERATURE RANGE | (-)30 F TO 165 F |
| 5. STRETCH TEST AT 75 F | 150%~450% |
| 6. WATER ABSORBING AT 75 F | 15%~45% |
| 7. ACCELERATED AGEING % CHANGE IN COMPRESSION DEFLECTION AT 160 F | (±)20% |
| 8. DENSITY- AVERAGE POUNDS / CUBIC FOOT | 16~50 |
Nature rubber products are used in cushion, non-slip cushion, anti-fatigue floor mat and seals; it is also suitable for absorption of sound and vibration.
Products being designed and monitored during the past 15 years by computer industry including mouse pad and wrist pad, this makes our open cell rubber a global brand best fit for mouse pad on cloth surface and plastic hard board. This product uses nature rubber without ozone depleting substance for which we are proud of.
As protective accessories, we are talking about the shoe sole and insole. Our open cell foam materials provide a better effect on respiration and sweat absorbing, capable of holding temperature under rather dry and cold surroundings.
Performing with a Yoga mat made by nature rubber under open cell process, you can say goodbye to slip already on the mat, even if it is wet because of sweat. It has been long for Yoga practice using nature rubber to meet with the non-slip safety demand, taking advantage of non-slip characteristic of nature rubber to reach the best non-slip effect.