CNC WATER JET CUTTING – PE FOAM, PU FOAM, XLPE FOAM

Examples of Water Jet cutting

Water jet cutting uses a very high-pressure jet of water to make fine and accurate cuts in flexible foams. No tooling or dies are necessary, so if you need a sample prototype, have a low volume production, or anticipate making changes in the future, water jets can be preferred. Water jets have two-dimensional capability but can cut at angles. Layering can be used to increase 3-dimensional designs. Water jets can cut up to 8” plus. With waterjets, there is no concavity effect like with die cutting. Concavity is when the foam gets a curved shape which can happen on thicker foam when using a steel rule die which compresses against the foam. Running water jet equipment is expensive, so costs can be more.

Advantages of a Water Jet:

Precision:

Water jet cutting provides high precision and accuracy, allowing for intricate shapes and tight tolerances to be achieved with minimal kerf width. This precision makes it suitable for cutting complex designs with intricate details.

Versatility:

Water jet cutting can be used with a wide range of materials, including foam, rubber, plastics, metals, composites, ceramics, and glass. It is particularly well-suited for cutting foam materials of varying densities and thicknesses.

No Heat Affected Zone (HAZ):

Water jet cutting is a cold cutting process, meaning it does not generate heat during cutting. This eliminates the risk of thermal damage to the foam material, such as melting, warping, or discoloration, allowing for clean and precise cuts without altering the material properties.

No Material Contact:

Water jet cutting is a non-contact cutting method, which means there is no physical force applied to the foam material during cutting. This minimizes the risk of deformation or damage to the foam, making it ideal for cutting delicate or fragile materials.

Minimal Waste:

Water jet cutting produces minimal material waste, as the narrow stream of water can be tightly focused on the cutting path. This optimization of material usage helps reduce costs and environmental impact by minimizing scrap and maximizing material yield.

Environmentally Friendly:

Water jet cutting is an environmentally friendly cutting method, as it does not produce hazardous fumes, dust, or by-products. The process uses water as the cutting medium, which is a natural and sustainable resource, making it a clean and eco-friendly option for foam cutting.

No Tooling Required:

Unlike other cutting methods that require custom tooling or dies, water jet cutting does not require any specialized tooling. This reduces setup time and costs associated with tooling, allowing for faster and more cost-effective production.

Multi-Material Cutting:

Water jet cutting can cut through multiple layers of different materials simultaneously, making it suitable for applications requiring composite materials or laminates. This capability allows for efficient production of multi-layered foam products or assemblies.

Minimal Edge Finishing Required:

Water jet cutting produces clean and smooth edges on foam materials, typically eliminating the need for additional finishing or post-processing. This saves time and labor costs associated with edge cleanup.

Speed:

Die cutting can achieve high cutting speeds, resulting in fast turnaround times for foam products. This rapid production capability is advantageous for meeting tight deadlines and responding quickly to customer demands.

Cut Height:

Compared to other methods of cutting foam, water jet cutting can make thicker cuts through foam, up to 8 inches or more, which is superior to CNC knife cutting and die cutting.

Scalability:

Water jet cutting is easily scalable to accommodate varying production demands. Whether customers need a hundred or tens of thousands of foam pieces, die cutting processes can be tailored to meet their specific volume requirements efficiently and cost-effectively.

Disadvantages of a Water Jet:

Operating Costs:

Operating a water jet cutting machine can be costly due to the consumption of abrasive materials and water, as well as electricity for powering the equipment. Customers need to consider ongoing operational expenses when budgeting for water jet cutting.

Limited Design Flexibility:

Die cutting is best suited for repetitive or standardized 2D shapes. 3D shapes and pocket cutting require the layering of foam pieces. Design changes or variations may require modifications to the dies, which can be costly and time-consuming. Customers seeking flexibility in design may find die cutting less accommodating compared to other cutting methods.