HIPS

Overview

High-Impact Polystyrene (HIPS) is a toughened grade of general-purpose polystyrene, modified to improve impact resistance. It is a low-cost, easy-to-process thermoplastic available in sheet form, used widely in signage, display, point-of-sale, and interior fabrication. HIPS machines, saws, and routers cleanly and accepts printed graphics, adhesive vinyls, and paint readily. It is not intended for structural or load-bearing applications, or for outdoor use without additional protection. Its main appeal is ease of processing and low cost relative to engineering-grade thermoplastics.

Working properties

• Machinability and workability

  HIPS is one of the easiest plastic sheets to work with. It saws, drills, and routes cleanly without special tooling and produces minimal swarf. It can be scored and snapped for straight cuts and is straightforward to bond with appropriate adhesives.

• Surface and print compatibility

  HIPS accepts a wide range of surface treatments — paint, adhesive vinyl, screen printing, and digital print. It is commonly used as a substrate for signage and display panels that will be finished with printed graphics or vinyl overlays.

• Thermoforming

  HIPS thermoforms easily at low temperatures and is suitable for simple vacuum-formed trays, enclosures, and formed panels. It is one of the more forgiving materials for thermoforming in a low-volume workshop environment.

• Impact resistance

  Compared with general-purpose polystyrene, HIPS has meaningfully better impact resistance, though it remains less impact-resistant than engineering grades such as ABS or polycarbonate. It is appropriate for light-duty display and interior use, not for machine guards or safety applications.

• Chemical and environmental limitations

  HIPS is not suitable for outdoor applications without UV protection — it yellows and becomes brittle under prolonged UV exposure. It is also susceptible to a range of organic solvents and is not appropriate for chemical-contact applications.

Typical uses

• Point-of-sale displays, retail fixtures, and shop fittings
• Interior signage panels and display boards
• Thermoformed product trays and packaging inserts
• Light duty enclosures and covers
• Exhibition and display stand components

Things to confirm before ordering

• Colour — HIPS sheet is available in white, black, and a range of colours; confirm availability for your required colour.
• Thickness — available in a range of thicknesses from thin sheet upwards; confirm the required thickness for your application.
• Surface finish — one or both faces may be textured or gloss depending on grade; confirm if surface finish matters for your fabrication.
• UV and outdoor exposure — standard HIPS is not suitable for outdoor use; for any outdoor or UV-exposed application specify accordingly.

How does HIPS compare?

• ABS →

  ABS offers better impact resistance, chemical resistance, and surface toughness than HIPS. It is the preferred choice for anything structural or subject to physical abuse. HIPS is significantly cheaper and better suited to light display and interior work.

• Acrylic (PMMA)

  Acrylic offers superior surface quality, optical clarity, and UV resistance. HIPS is cheaper and easier to process but is not a substitute for acrylic where clarity or outdoor durability are needed.