Jennifer L. Altstadt was named president of Weatherchem Corp.

Morrison Timing Screw (Glenwood, IL) modernized its 15-year-old logo.

Elopak, Inc. (New Hudson, MI): Larry T. Gibson, mgr., national carton sales.

Elopak (New Hudson, MI): Claudio Sidney, dir., Latin American market.

Elopak Inc.'s (New Hudson, MI) Norwegian parent company has established a carton converting joint venture with Grupo Industrial Lala (Gomez Palacio, Durango, Mexico) to be named Envases Elopak S.A.

Unifill Intl. AG and Unifill Intl. Holding AG (Krauzlingen, Switzerland) were acquired by Elopak a.s. (Lier, Norway).

Elopak, Inc. (New Hudson, MI): Les Pape, senior vp.; Jim Succio, vp, sales and mktg., U.S., Canada, Mexico, Central America and Caribbean.

Elopak (New Hudson, MI) has acquired the French plastic film producer Norester (Normandy, France) from the Vulliez Group.