Alcot Plastics Ltd. manufactures closed-cell extruded polyethylene foam products from its facility in Guelph, Ontario. Since 1983, we have worked with contractors, distributors, industrial buyers, packaging buyers, screen manufacturers, recreation suppliers, and businesses that need practical custom foam solutions.
Polyethylene foam, often called PE foam, is a lightweight closed-cell foam used for cushioning, sealing, spacing, protection, flotation, and custom profile applications. It is valued because it is flexible, resilient, moisture resistant, and easy to adapt into different shapes and sizes.
Whether you need a standard product such as backer rod, foam screening spline, or pool noodles and water woggles, or you are trying to source a custom polyethylene foam profile, Alcot can help you review the application and determine what type of foam product makes sense.
What Is Polyethylene Foam?
Polyethylene foam is a plastic foam made from polyethylene resin. In closed-cell PE foam, the material is made up of many small sealed cells. This structure helps limit water absorption while providing cushioning, flexibility, and shape recovery after compression.
Because of these properties, polyethylene foam is used in a wide range of practical applications, including construction joint backing, screen spline, protective packaging, recreational foam products, pipe insulation-style applications, spacers, plugs, pads, and custom extruded profiles.
Why Closed-Cell PE Foam Is Useful
- Moisture resistance: Closed-cell foam helps resist water absorption, making it useful in outdoor, construction, and packaging applications.
- Cushioning and protection: PE foam can help protect products from impact, rubbing, vibration, and handling damage.
- Flexibility: The material can bend, compress, and conform to many shapes without being overly rigid.
- Light weight: PE foam adds protection or spacing without adding much weight to the finished product or package.
- Custom profile potential: Extruded foam can be made into practical shapes for specific applications, depending on the product requirements.
Polyethylene Foam Products and Applications
Backer Rods
Polyethylene foam backer rods are used in construction and sealant applications to help control joint depth, support the sealant, and reduce unnecessary sealant use. Alcot manufactures both standard closed-cell backer rod and soft backer rod for applications where extra compressibility is needed.
Foam Screening Spline
Foam screening spline is used to hold window and door screens securely in their frames. Alcot’s PE foam spline is designed to be flexible, easy to install, and suitable for screen manufacturers and replacement applications where a consistent, reliable fit is important.
Pool Noodles and Water Woggles
Pool noodles and water woggles are made from closed-cell polyethylene foam because the material is lightweight, buoyant, and comfortable to handle. Alcot manufactures foam noodles for recreation, aquatic programs, distribution, and specialty uses where custom sizing, color, or volume may be needed.
Custom Polyethylene Foam Profiles
Not every foam project fits into a standard product category. Alcot works with customers on custom polyethylene foam profiles and specialty shapes for packaging, protection, spacing, padding, plugging, and other product-specific uses.
Custom PE foam may be useful when you need a specific shape, size, fit, or function that off-the-shelf foam products cannot provide. Common examples include protective packaging, roll-bar padding, custom stoppers, mattress components, and foam parts used inside a larger product assembly.
Packaging, Protection, and Specialty Uses
Closed-cell polyethylene foam can be a practical choice for protective packaging because it cushions products without adding much weight. It can be used to help protect electronics, glassware, toys, components, and other sensitive items during handling, storage, or shipping.
Recent Custom PE Foam Projects
Recent custom polyethylene foam projects have included:
- Custom mattress components, including interior foam formed in a Greek omega shape
- Roll-bar padding for performance and racing vehicles
- Polyethylene foam bottle stoppers in custom shapes
- Protective packaging for electronics, glassware, toys, and other sensitive products
Why Work with Alcot Plastics?
Alcot’s manufacturing process was developed to support efficient polyethylene foam extrusion with consistent production and reduced material waste. For buyers, that means a practical conversation about the foam product you need, the quantity required, and whether a standard or custom solution is the better fit.
- Manufacturing experience dating back to 1983
- Guelph, Ontario production facility
- Closed-cell extruded polyethylene foam manufacturing
- Standard products and custom foam profile options
- Ability to discuss small, specialty, and made-to-order foam requirements
- Practical support for contractors, distributors, manufacturers, and industrial buyers
Talk to Alcot About Your Foam Application
Need help choosing a polyethylene foam product or reviewing a custom foam profile? Share the application, approximate size, quantity, and any performance requirements you already know. Our team can help you determine whether an existing product or a custom PE foam solution is the right starting point.
FAQs
Polyethylene foam, also called PE foam, is a lightweight plastic foam commonly used for cushioning, sealing, spacing, protection, flotation, packaging, and custom foam profiles. Closed-cell polyethylene foam helps resist water absorption while staying flexible and resilient.
Closed-cell polyethylene foam is used in products such as backer rods, foam screening spline, pool noodles, protective packaging, padding, spacers, stoppers, and custom foam shapes. Its closed-cell structure makes it useful where moisture resistance, cushioning, and flexibility are important.
Yes. Alcot works with customers on custom polyethylene foam profiles and specialty shapes for packaging, padding, protection, plugging, spacing, and other product-specific applications. The best starting point is to share the intended use, approximate dimensions, quantity, and any special requirements.
Alcot manufactures closed-cell extruded polyethylene foam products, including backer rods, foam screening spline, pool noodles and water woggles, custom foam profiles, bottle stoppers, protective packaging components, and other made-to-order foam products.
Contact Alcot Plastics with the product type, application, size, quantity, and any known performance requirements. The team can help review whether a standard product or a custom polyethylene foam profile is the better fit.

