A protective packaging formation device is disclosed herein. The protective packaging formation device can include an inflation assembly having a fluid conduit that directs fluid between first and second overlapping plies of a web material and a sealing mechanism. The sealing mechanism can include a heating zone of the sealing mechanism operable to heat the plies to create a longitudinal heat seal that seals the first and second plies together as the web is driven over the heating zone in a downstream direction. The sealing mechanism can also include a pinch zone that overlaps longitudinally with the heating zone. The pinch zone defined by an isolation element that applies a first pressure to the web material along a first region. The pinch zone is also defined by a support structure and a compression element that applies a second pressure to the web material there-between along a second region transverse to the first region.

A tool for producing fiber-reinforced plastics components in the injection process has a receptacle for a plastics component, which receptacle is surrounded by a circumferential seal which is inserted into a groove formed in the tool. It order to devise such a tool with which a higher service life for the seal can be achieved, the invention provides a receptacle chamber as volume compensation.

Techniques are described for fabricating parts in an additive fabrication device from a light-scattering build material, such as ceramic build materials. An additive fabrication device may comprise a container for holding a photo-polymerizable build material containing a light-scattering species such as ceramic particles. The bottom of the tank may comprise one or more light-absorbing additives that absorb a portion of the actinic radiation used to cure the build material. The one or more light-absorbing additives may include an absorptive dye, including inorganic pigments like carbon black, organic dyes, or other species.