Sweet, sweet vinyl

Discussion in 'Audio Hardware' started by bjlefebvre, Sep 21, 2022.

  1. Tim Lookingbill

    Tim Lookingbill Alfalfa Male

    Location:
    New Braunfels, TX
  2. Just Walking

    Just Walking Forum Resident

    Location:
    UK
    There are various grades of vinyl. The alligator clip in the link above has to remain flexible, and so includes a whole bunch of plasticizer. It is the reaction with the plasticizer that causes the problem reported. Similar to the foam that was used in headphone cups as a damping material. Over a period of time that is reduced to a black tarry mess. Similar sort of issue.
     
  3. yamfan

    yamfan Forum Resident

    Location:
    Missouri
    The oil coming from those previously "depleted" wells is real enough.
     
  4. Kevin j

    Kevin j The 5th 99

    Location:
    Seattle Area
    Source?
     
  5. yamfan

    yamfan Forum Resident

    Location:
    Missouri
  6. Just Walking

    Just Walking Forum Resident

    Location:
    UK
    The basis for that is real if you read the papers listed above. You deplete a well (in otherwords deplete the reservoir under the well). Then over time oil dribbles into the reservoir from deposits elsewhere through fissures in the crust. So look in the depleted well some years or decades later, and you find some oil has moved back in.

    Nothing magic in that. No new science needed.
     
  7. kundryishot

    kundryishot Forum Resident

    Location:
    Wales
    Oil was supposedly running out in the 70s, and yet to-day we have even more of the stuff
     
  8. yamfan

    yamfan Forum Resident

    Location:
    Missouri
    There's no sweet government "research" grants given for saying things are fine and just enjoy your life. And, even though Ehrich lost the bet on the price of commodities, he's still regarded as some sort of messiah in some circles.
     
  9. LakeMountain

    LakeMountain Vinyl surfer

    Location:
    Netherlands
    After reading about “sweet” bio records I came across an article in the German Stereo magazine which discusses the sweet “vinyl” process and also a second vinyl alternative production process. This sounds actually quite interesting (see a translation of a part of the article below).
    This is their siteGreen Vinyl Records

    2015 Harm Theunisse with his company Symcon in Veldhoven, the Netherlands. It comes from the injection molding process for CD production and transfers this technology to the LP. Instead of PVC, he uses a special, fully recyclable PET substrate. At around 300 degrees, this is injected into the mold formed by the press stamps and cooled down at lightning speed. It's all over in less than 20 seconds, the record is done!
    Theunisse states that they can easily produce 10,000 discs per stamp instead of the usual 1,000. In addition, his process saves around 90 percent of energy compared to the current standard process. It also produces an even better quality product, since the PVC lump that is pressed wide in the normal process causes tension in the material, which leads to deformation of the groove. It's not the case with the records on his Green Vinyl Records label, and any color is possible.”
     

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