Cascade Engineering, Inc.

Paul J Rugg

Brian G Parker

Laurie A Weeks

Chad R Haskin

Marlin D Broersma

A method of forming a container includes providing a mold including at least one bulbous protrusion. The mold is closed to form a mold cavity corresponding to the shape of the container, with the bulbous protrusion being positioned in the mold cavity. Material is injected into the mold cavity to form the container, and the material envelopes the bulbous protrusion to create an undercut slot. The container is removed from the mold and the bulbous protrusion is withdrawn from the slot.

Waste container and related method of manufacture

Radio frequency identification device case

A vacuum wrapping process and apparatus for adhering a flexible material to a rigid substrate. The temperature of the flexible material is monitored, processed, and controlled by a control unit. The material is supported over the substrate in a mold. Spring-loaded rotatable bars are supported within the mold and compress the marginal portion of the material against the mold. A vacuum draws the material toward the substrate, and the bars control the release of the material at a desired rate. The vacuum drawn on the material is monitored, processed and controlled by the control unit. The amount of vacuum applied to the material is inversely related to the temperature of the material. The control unit alters parameters of the vacuum molding process, such as the material temperature and the vacuum to reduce tearing, stretching, and/or wrinkling of the material. The spring-loaded bars control the rate at which the material is drawn toward the substrate under the vacuum, thus further reducing tearing, stretching, and/or wrinkling.

Growing community of inventors

Grandville, MI, United States of America

Paul J Rugg