These products are commonly referred to as Lucor and there are other common names. The company known as the innovative quality leader in the interleaving powder business was SaberPack which is now Chemetall.The Chemetall interleaving powders are used throughout North and South America, Europe, Asia and the Middle East to protect flat, tempered and coated glass. This glass is used for residential, commercial, automotive, furniture, solar, coated and other flat glass applications.
For the maximum protection of the glass surface, one must consider warehouse inventory time and humidity during storage, mode and distance of transport, in order to select the best bead and acid for the application. The interleaving powder must have a tight particle size distribution for the best protection. A few large bead will allow the smaller beads to fall out when the glass is raised to the vertical position. A lot of fine beads will blind the glass which will prevent the larger beads from being retained on the glass. Products that are not screened will have unacceptable performance and variation which will lead to glass on glass contact, rub marks, "worm tracking" on coated glass, scratches and staining.
The recommended product for the maximum protection of flat glass against corrosion and for the best separation of the lites is BL-55 which is a mixture of boric acid and acrylic beads. AL-55 which is a mixture of acidic acid and acrylic beads is also commonly used when the length of storage is short and the humidity is low. For high performance coatings on glass, the best product on the market is CG-110 which uses a bead that will not damage the coating but will not abrade and disintegrate during transportation. Chemetall has other interleaving powders that are tuned for the specific application. Please contact Chemetall for further information and technical support.