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  1. GilPolymers

    COC vs COP

    hi, can someone explain me the difference between COP and COP from structure point of view and let em know if there is any difference on their processing compared to each other? Thanks Gil
  2. GilPolymers

    Injection molding Simulation

    Hi all, Is there anyone aware of a free mold filling software? I would like to have only a rough estimation for pressure drops and filling time. Shear rate profile, crystalization, warpage, welding lines... etc are not of my interest with this free software. Thanks...
  3. GilPolymers

    Stack system design

    Hello all, I'm working on a layout concept for a stack mold with one cavity on each side (2x1cav). From the mechanical stability of the mold on the machine and the mold itself, what solution would you prefer (pleases see attached picture)? My opinion: Solution A advantaged: Forces will be...
  4. GilPolymers

    Max Shear rate and shear stress

    Hi all, I'm looking for literature that could help me to define limits on the shear that you can apply to a certain polymer family. In the books that I have (for example: Runner and Gating Design Handbook: Tools for Successful Injection Molding and Mold Engineering) I have a table and some...
  5. GilPolymers

    HIPS / Styrene Butadiene Copolymers

    Hi all, Today during a chat w/ some friends at work we end up at the question, which is the difference between HIPS or Styrene Butadiene Copolymer? I would like to share this question with you people to know also what you think about it. As far as I know HIPS is made out PS blended or...
  6. GilPolymers

    Rheology Classes

    Hello all, After my studies in Polymer Science and Engineering I decided to study by my own Polymer Rheology as I think that it's a powerful tool to understand a couple of flow behaviors in processing. I would like to share with you what I found. For those who are interested, you can download...
  7. GilPolymers

    Static electricity in glass fibres

    Hello ppl! I'm not sure if I wrote this here some hours before, but as I can't find it... I'll write it again. I need to increase the static electricity in glass fibres. Anyone has an idea about how can I do it? Sorry but I can't give more information. Thanks for you replies in advance.
  8. GilPolymers

    Cut composites

    Hello, I have long fibre reinforced composites samples with 10 x 50 x 2 (mm). Composites have a thermoplastic matrix and glass fibres. I'm trying to cut those composites in smaller samples of 5 x 5 x 2 without change their morphology. I tried to cut those with a saw but the result was not so...
  9. GilPolymers

    Water absorption

    Hey all, Finally I think that I found a really nice forum that can help me! It will be nice be helped and help people here... Well... My question! I would like to know if someone know where I can fine equations describing the water absorption process of polymers. I know some simple equations...

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