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      Rigid Foam Sheets

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      17 article   /   140 Variants
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      • Styrofoam, light blue, untrimmed
        9 Variants
        Styrofoam, light blue, untrimmed
        from 2,40 €
        Edges: partially with seams, Density: approx. 33 kg/m³, Useable size: guaranteed minimum dimension
      • Styrofoam, light blue, trimmed
        20 Variants
        Styrofoam, light blue, trimmed
        from 1,50 €
        Edges: straight, Density: approx. 52 kg/m³
      • Polystyrene rigid foam, white, untrimmed
        3 Variants
        Polystyrene rigid foam, white, untrimmed
        from 14,80 €
        Edges: straight, Density: approx. 33 kg/m³
      • Forex Classic PVC foam board, white (custom cutting available)
        27 Variants
        Forex Classic PVC foam board, white (custom cutting available)
        from 1,20 €
        semi-gloss/semi-gloss, one side with protective film, flame resistant in compliance with DIN 4102 B1 (German Industry Norm)
      • Forex Classic PVC foam board, coloured (custom cutting available)
        23 Variants
        Forex Classic PVC foam board, coloured (custom cutting available)
        from 3,20 €
        opaque, semi-gloss/semi-gloss, one side with protective film, flame resistant in compliance with DIN 4102 B1 (German Industry Norm)
      • Polystyrene rigid foam, silver-grey, untrimmed
        3 Variants
        Polystyrene rigid foam, silver-grey, untrimmed
        from 8,50 €
        Edges: with fold, Density: approx. 34 kg/m³, Useable size: guaranteed minimum dimension, Strength: 80 mm
      • Polystyrene rigid foam, ivory, untrimmed
        9 Variants
        Polystyrene rigid foam, ivory, untrimmed
        from 3,35 €
        Edges: partially with seams, Density: approx. 35 kg/m³, Useable size: guaranteed minimum dimension
      • SikaBlock PUR  M600 modeling board
        6 Variants
        SikaBlock PUR M600 modeling board
        from 6,70 €
        Material: microcellular, polyurethane-based model making material , Colour: light brown, Shore hardness: Shore 58 D (= 100 Shore A), very hard (ISO 868), Density: 600 kg/m³ (ISO 845)
      • SikaBlock PUR modelling board M450
        6 Variants
        SikaBlock PUR modelling board M450
        from 6,30 €
        material: extremely fine pored polyurethane-based light moulding material, Density: 450 kg/m³
      • SikaBlock PUR rigid modelling foam M80
        4 Variants
        SikaBlock PUR rigid modelling foam M80
        from 14,50 €
        material: fine-pored polyurethane-based rigid foam, Density: 80 kg/m³, Linear thermal expansion coefficient: 70 x 10 -6 K -1 (DIN 53752)
      • Smart-X polystyrene panel with foam core, custom cutting
        2 Variants
        Smart-X polystyrene panel with foam core, custom cutting
        from 27,50 €
        material: 100% polystyrene
      • SikaBlock modelling/tooling board M1000
        6 Variants
        SikaBlock modelling/tooling board M1000
        from 17,50 €
        material: homogeneous polyurethane-based modelling material, Density: 1,000 kg/m³, Modus of elasticity: 1,800 MPa (ISO 178)
      • Polystyrene foam Styropor EPS 040 DEO/WAB
        6 Variants
        Polystyrene foam Styropor EPS 040 DEO/WAB
        from 0,95 €
        material: Multi-purpose insulation panel made from expanded polystyrene foam
      • SikaBlock PUR modelling board M330 (240 kg)
        6 Variants
        SikaBlock PUR modelling board M330 (240 kg)
        from 10,50 €
        material: extremely fine pored polyurethane-based light moulding material, Density: 240 kg/m³
      • Selitron PS rigid foam panel, white
        2 Variants
        Selitron PS rigid foam panel, white
        from 2,90 €
        interior insulating board from extruded polystyrene rigid foam board, pressure-resistant, medium pore, smooth, semi-gloss surfaces, approx. 30 bis 40 kg/m³, certified to DIN EN 13501-1
      • Smart-X polystyrene panel with foam core
        4 Variants
        Smart-X polystyrene panel with foam core
        from 4,20 €
        100 % polystyrene, white, opaque, matte/matte, lightly grained, weather-resistant for up to 2 years (without significant change in colour), weight: 5 mm = approx. 1 kg/m², 10 mm = approx. 2 kg/m², protective foil...
      • SikaBlock PUR rigid modelling foam M150
        4 Variants
        SikaBlock PUR rigid modelling foam M150
        from 23,20 €
        very fine pored polyurethane-based rigid foam for model making, light yellow or light green, density: 150 kg/m³; compressive strength: 1,6 MPa (ISO 604), modulus of elasticity: 65 MPa (ISO 178), linear coefficient...
      Information about Rigid Foam Sheets

      Foams are described in the German Industry Norm 7726 thus: “materials which have cells (open, closed or both) distributed throughout the entire mass and which have a bulk density (DIN 53420) which is less than the density of the skeleton substance.” Every plastic, whether thermoplast, duroplast or elastomer, can theoretically be reworked into a foam but only a few types like polystyrene, PVC or polyurethane have any real practical applications.

      There are various methods for producing foams from plastic: in the production of polystyrene foam, polystyrene granules which already contain a blowing agent are steam shocked into forming the well known polystyrene beads. The high temperatures of the steam soften the thermoplastic polystyrene and the blowing agent vaporises whereupon small bubbles develop within the beads. The addition of more steam brings about the second stage of the production whereby the beads are fused together and polystyrene foam blocks, sheets or shaped parts are formed.

      The production of the considerably thicker and sturdier polystyrene rigid foams is a different matter. The PS granules are pressed together using an extruder and a blowing agent is added under pressure. When the material strand leaves the extruder jet, the blowing agent expands and turns the plastic into foam.

      Chlorofluorocarbons (CFC) have often been used as the blowing agent and still are – however in a modified form. After the passage of the CFC halon ordinance in 1991, a whole group of chlorofluorocarbons with a high potential for damaging the ozone have been forbidden for use as blowing agents. Manufacturers now use in their place gases like CO2 or partially halogenated hydrocarbons with less negative potential.

      For the production of polyurethane foams other processes than those used with PS or PVC must be used because crosslinked polyurethane can no longer be melted. PUR foam is formed when the fundamental component of the plastic is foamed during the crosslinking reaction. During this process chemical or physical blowing agents are utilized. Many different polyurethanes require no agents at all for foaming because the fundamental components give off carbon dioxide during the crosslinking reaction which itself foams the reaction mass.

      Uses: Rigid foam is the basis for a large range of products: because of its insulating qualities polystyrene foam or PS rigid foam is used in construction as well as for making disposable tableware. What makes the inexpensive expanded polystyrene especially interesting as an impact resistant packaging material is its combination of light weight (the density of polystyrene foams runs between 20 and 200 kg/m³) and relatively high stability.

      Polyurethane foams can be found practically everywhere: rigid foams as insulation, thicker sheets as self-supporting construction components, soft foam in chair cushions, car seats, armchairs and mattresses – and you have certainly had the kitchen sponge cloth often enough in your hands.

      From a special representative of the class of foams many flexible tennis shoe soles are made. The so-called integral foams display a variety of different densities. The core is somewhat loose but as you move outwards towards the surface the increasingly denser cell structure becomes ever more compacted until finally at the surface itself a smooth consistent layer is built. The soft PU integral foams can not only be found caressing our feet but are also accompanying us when driving our cars as headrests, steering wheels or dashboards.

      The above mentioned combination of high stability and low density is also taken advantage of in making sandwich panels. Boards like KAPA Line or KAPA Mount which are so often used in the fields of exhibitions and advertising are mostly made out of polyurethane foam which is covered in paper or cardboard. As a result, square-metre large paper surfaces with light weight and excellent stiffness are created.

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