Presspack

The "presspack" container/dispenser from Bio-Pak needs only mild pressure at the top of the container to dispense the product.

[…] presspack cans, compack cans, aluminium foil two-chamber cans and the alu-presspack and alu-compack systems are compared.

164. Vacuum drying cabinet for evacuating and pre-drying of the presspacks of copper coated sheets or laminates, complete with accessories.

Figure 1.4 shows a modern thyristor encapsulated in a presspack housing and Figure 1.5 illustrates a typical interdigitated gate geometry in a high-power thyristor; the black areas indicate silicon ( Si0₂ ) and the white areas the Al metallisation.

For current Si IGBTs, there are two basic package types—the first is a standard attached die, wire bond package utilizing soft-solder and wire-bonds as contacts, while the second is the presspack, which employs dry-pressed contacts for both electrical and thermal paths.

The complex construction of a presspack IGBT results in a considerable increased demand on the precise alignment of a multitude of parts and on the allowable part tolerances compared to a semiconductor module.

One broker states that a considerable quantity of wool for export is now presspacked, jute canvas and iron hoops similar to those used on South American bales being employed.

Newspapaers are usually packed for this market in bales of 280 pounds each, although consignments of 200 and 560 pounds are also received, each bale presspacked, wrapped in burlap, and bound with four iron hoops.