PillowPlate or dimpled jacket plates

Laser welded cooling plates

The Photonweld wobble cube is able to produce PillowPlates which can be used for a large range of products, such as; heat exchangers, filter housings, falling film, square containers, cooled containers, offen walls, climate chambers, ice accumulators, pipes, heated or cooled vibration feeders and in cylindrical tanks, as well as in tanks of other shapes and designs, for example rectangular or oval ones. They can also be used for various industries for example food and beverage industries and other food-making and process industries. The surface can be brushed, polished or sandblasted. Possibilities are endless because you can produce every weld pattern shape and any required plate shape can be welded or engraved. The PillowPlates can be single or double embossed plates.

Laser Welding of Pillow plates

Low cost automatic Production of pillow plates

Pillow Plates, also called dimpled plates or thermo plates, consists of two stainless steel sheets that are laser welded together by welding a custom circle weld pattern. Then the plate is inflated by using water pressure, which creates a specific single or double embossed profile – the pillow plate, through which the cooling or heating is conducted. The thickness and the spot pattern are determined by the pressure requirements.

Pillowplate laser welding

The maximum product size depends on the width of the laser welding machine.

Pillowplates can be designed with thin top plates for the applicable working pressure. For instance with 1.0 mm plate we can reach a burst pressure of 180 bar. With 2.5 mm we can design heat exchanger plates with burst pressures of 400 – 500 bars. Generally 98% of the pillowplate material is stainless steel, 304L up to 254SMO.

The working pressure global guideline:

Water / glycol / thermal oil: 1 – 5 bar

Refrigerant Freon – NH3: 19 bar (at 20oC)

CO2 refrigerant: 120 bar

Steam: 0.5 – < 30 bar

Pillowplate specials

Pillowplate pipes diameter 100+ mm

Copper and titanium pillowplates

Satellite simulation plates

Cryogenic plates