Douglas Machine Inc.

Bradley Jon VanderTuin

Irvan Leo Pazdernik

Paul Howard Wagner

Richard Jerome Schoeneck

Bruce Peterson

Bruce Malcolm Peterson

A heat tunnel for applying heated air to articles enclosed in shrink-wrap film includes at least one air supply unit; a conveyor; and a heat shroud spaced from the conveyor. The air supply unit includes a source of heated air, a fan, a heated air plenum, air ducts, and a return air plenum. Multiple air supply units can be provided along the conveyor to create a heat tunnel of desired length.

Heat tunnel for film shrinking

A heat tunnel for applying heated air to articles enclosed in shrink-wrap film includes at least one air supply unit; a conveyor; and a heat shroud spaced from the conveyor. Tha air supply unit includes a source of heated air, a fan, a heated air plenum, air ducts, and a return air plenum. Multiple air supply units can be provided along the conveyor to create a heat tunnel of desired length.

Growing community of inventors

Alexandria, MN, United States of America

Bradley Jon VanderTuin