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  1. yoshi900

    help with picking material for bumper application

    Pat, What thermoset (machinable) would you suggest I look into? I know very little about compression molding (so they put the plastic pellets into a mold, squeeze and heat, right?) How's the cycle time (cost) compare to injection molding? Regards, JC
  2. yoshi900

    help with picking material for bumper application

    compositepro: I did think of using some type of rubber at first, in the end decide the mounting needed to be bolted on. Plus, it might need to be paint for decorative purpose. btrueblood: interesting suggestion. but i think curving it would add to the cost/pc. since the quantity will be enough...
  3. yoshi900

    help with picking material for bumper application

    Pat, It's approx 1"x1" solid section. Length wise is about 20" long but curved. To cut it out of a 1" sheet would be wasting a lot of material. That's why I'm looking at injection molding. The quantity will be there to justify the cost of the mold. >4k pcs. Looking at buying these material in...
  4. yoshi900

    help with picking material for bumper application

    No, it's not like a car bumper. It's just a thin curve piece. It's more like about 20" long. cross section is about 1"x1".
  5. yoshi900

    help with picking material for bumper application

    Hi all, Looking for some advise on picking a material for making some plastic bumper guard. These bumpers are long thin curved shaped. Since there are many different variation, I'm looking at injection molding the material, then machined to fit each application. The materials that I'm thinking...
  6. yoshi900

    type of foam inside bumper

    Would you know why polypropylene is used instead of polystyrene?
  7. yoshi900

    type of foam inside bumper

    Does anyone know what type of foam is usually used inside a car bumper? I think it looks a bit yellowish.

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