Yes, they are. Most of Lock&Lock plastic products are made of PP (Polypropylene), dubbed by Green Peace as the material of the future. PP consists of only carbons and hydrogen; thus, it is harmless and safe.
Lock&Lock Glass is made of ¡°heat-resistant glass,¡± which is safe at high temperature. That's why Lock&Lock Glass is strong enough to withstand heat and can be used in microwave ranges and ovens.
< Advantages of heat-resistant glass>
- The difference lies in the raw material.
: Unlike the ordinary carbonate of lime glass, the product is borosilicate glass containing a special heat-resistant composite of borosilicate; it is safe even with sharp temperature changes.
- Production procedures differ.
: Heat-resistant glass exhibits plasticity at temperatures higher than 200~300¡ÆC; made of raw materials including borosilicate, it is very strong against heat shocks due to rapid heating/cooling. The production cost is 2~3 times that of ordinary glass.
Lock&Lock has various product lineups including Lock&Lock Glass, Zen&Lock (porcelain), Freezer Lock, Multi Lock, Lunch Box, Smart Saver, and Living Box. Check them out by visiting our online shopping mall (www.locknlock.com), directly managed shops, and discount stores nationwide.