Home | Contact Us | RFQ | About Us | Locations | Careers | Excess Material

Midland Plastics Custom plastic components manufacturer, fabricator and assembler

Custom Vacuum Forming

Vacuum forming is the process of taking flat, thermoplastic sheet, heating it until it is formable, creating a vacuum under the sheet and then letting atmospheric pressure (14 p.s.i.) force the material over, or into, a mold.

Vacuum forming typically produces 3-dimensional parts that have slightly rounded edges and softer corners. In addition, the vertical edges of a vacuum-formed part will have a small taper (called a draft angle) in order to facilitate removal of the part from the mold. (Note: For customers requiring sharper corners and edges, Midland recommends pressure forming.)

Custom Vacuum Formed Parts

Some typical custom vacuum-forming applications:

  • Trays
  • Housings
  • Covers and lids

Midland uses three-station rotary presses with the capacity to produce finished parts measuring up to 54 by 70 inches, with a depth (draw) of up to 2 feet. We can use a variety of molds, both male and female, made of a variety of materials, depending on the application and number of parts needed.

In theory, almost any thermoplastic material is formable. Midland vacuum forms most frequently with these plastics:

  • ABS
  • Styrene
  • Acrylic/PVC Alloy
  • Acrylic
  • PETG
  • Polyethylene
  • Polypropylene
  • PVC
  • Polycarbonate
  • Butyrate

Ridge Forming

In applications where optical clarity in the primary part surfaces is critical, Midland offers customers a type of vacuum forming called ridge forming. Ridge forming utilizes wire or skeletal molds to reduce or eliminate the risk of the material touching a solid tool, except where a plane change is required.

Typical ridge forming applications are medical or food service equipment.


Custom Vacuum Forming from Midland Plastics