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Roto Molding of Polyvinyl Seat Bellows for the Trucking Industry


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A client specializing in high-end air ride seats for the trucking industry was in need of a flexible seat bellow to encompass the bottom of their seating systems. After consulting Rhino, Inc. it was determined a poly-vinyl compound would best meet the functional specification of the part while still delivering the performance characteristics the client was looking for. The process involved the manufacturing of a CNC machined aluminum mold that would mold the part in such a way that the accordion type flexibility would be sustained. Post mold finishing of the part included flash trimming and cutouts for attachment and assembly, requiring no secondary operations from the client.

The part measured 19.25 inches long, 9.94 inches high, and 17 inches wide. It weighed 4.5 pounds at completion. We worked within tolerances of +/- .030 inches.

Special features included bellows rib design, allowing for easy shape fluctuation for the air shock movement. Upon completion the product was thoroughly inspected to ensure consistent material dispersion throughout the ribs, and a consistent material finish.

Once quality was assured, we delivered the product to our client, who was extremely satisfied with every aspect of service and manufacturing. To learn more about this project, or for more information on our other products and services, please contact Rhino, Inc.






Project Highlights for Roto Molding of Poly-Vinyl Seat Bellows

Product Description

These Roto-Molded Seat Bellows are used within the underside housing for a high-end air ride tractor trailer driver and passenger seats.

Capabilities Applied/Processes

Mold Manufacturing
  • CNC Machine Aluminum Mold in Rhinos Tooling Shop -American Roto Tool
Secondary Operations
  • Trim Flashing
  • Cut Mounting Holes

Roto-Molding

Overall Part Dimensions

Height: 9.94"
Length: 19.25"

Width: 17.0"

Tightest Tolerances

±.030" per inch

Material Used

Polyvinyl

Component Finish

Glass Bead

Color

Black
Glass Bead Finish

Special Features

Bellows Rib Design and Material Properties
  • Allows for Easy Shape Fluctuation for Air Shock Absorption

In Process Testing Performed

Visual inspection, looking for:
  • Consistent material thickness throughout ribs
  • Consistent material finish

Estimated Part Weight

4.5 lbs

Industry for Use

Automotive
Trucking

Product Name

Seat Bellows