see also: Study on the raw materials locally available
Reinforcement is the core of the membrane and maximizes the membrane quality. Standard width is 100 cm for fiberglass mat and 101..103 cm for polyester depending the weight. The maximum width is 130 cm and max. diameter 150 cm Inside core diameter 152 mm (6"). There are so many kind that it's impossible to indite a list, but they can,at least, to be assorted in four main families:
It's strictly necessary to check what the local or neighbor market offers considering that reinforcements represent a consistent cost of the final product. Rolls can be stocked on pile up to 4..5 layers. The average length of a standard roll is 2000 m.
IPP felt woven non woven isotactic polypropylene call also TNT, done in different colours, used as finishing surface film. Weight 30..70 g m² The maximum roll diameter is 80 cm and the width can be same then membrane or 8..10 cm less (over lap with burn-off film). Inside core diameter 76 mm (3"). Rolls can be stocked on pile up to 4..5 layers.
HDPE film of high density polyethylene in rolls, used as finishing surface film. Thickness about 7 microns,maximum weight of roll 125 kg (about 40 cm diameter). Width has to be 3..4 cm wider than membrane (the over laps will be folded) Normally companies pre-print logo and others cautions of a side. Inside core diameter 76 mm (3"). Rolls are vertical on pallet and can be stocked maximum in 2 layers.
Band of HDPE or IPP film to cover the over lap of granules membrane in small rolls trimmed at 10..12 cm of width and 25..30 cm of diameter. Inside core diameter 76 mm (3"). Also here, companies pre-print logo and others cautions of a side (ex."burn-off side")
SAND (or similar powder) for surface finishing having different dimensions depending the wanted result. Italian companies use micaceous stone,thin slate,river sand, quartz etc. In the proposed production line, sand can be lay on the over lap of granules membrane and to produce a double sands materials. It's important to check the different type of this kind of powder to be found locally. The most used select sand will be stocked in a silo other special types has to be bought in paper bags. The wear is 150...250 g m² The silo truck must have an own pneumatic pumping system to transfer to storage silo.
TALC powder very fine (10000 mesh): mixed with water is used for surface finishing having as result the typical dotted pattern on a side of the membrane. The wear is about 40 g m²t. and it can be bought in paper bags.
SLATE in Europe comes only from France (Carrier du Lac) in big bags of about 1,7 t. Maximum storage is two layer if far from passes.
ADHESIVE TAPE, for membrane rolls. Dimensions are:
PALLET for membrane rolls two way or four way with proper whole feet to run on roller. Palletizer takes these dimensions:
| Minimum | Maximum | |
|---|---|---|
| Widht | 80 cm | 120 cm |
| Lenght | 100 cm | 125 cm |
| Height | 7 cm | 16 cm |