the problem with bottle caps ?

Discussion in 'Cellaring / Aging Beer' started by skeevn, Apr 18, 2018.

  1. skeevn

    skeevn Initiate (127) Sep 25, 2016 Belgium
    Beer Trader

    NO HORIZONTAL vs VERTICAL BULLSHIT
    i've got a few questions where i can not find a clear answer to,

    1) Everywhere it states that bottles with a cap only can be stored vertical, nowhere is explained why this is and what happens with the bottle cap otherwise?
    * Does the protective plastic degrade (faster) and thus exposing the beer to the metal?
    *IF the inside has oxygen scavenging posibility, will it release the enclosed oxygen?
    *Cap can pop of the bottle because laying the bottle down creates to much pressure?
    *..... ?

    2) How is it possible that oxygen can enter the bottle?

    *the plastic has a very small leak?
    *with time the plastic degrades and so letting some oxygen in and pressure out?
    *it can travel trough the plastic? (should not be the case)
    *....?
     
  2. NeroFiddled

    NeroFiddled Poo-Bah (9,486) Jul 8, 2002 Pennsylvania
    Beer Trader

    1) Everywhere it states that bottles with a cap only can be stored vertical, nowhere is explained why this is and what happens with the bottle cap otherwise?
    * Does the protective plastic degrade (faster) and thus exposing the beer to the metal?
    - - - YES &NO. It may degrade faster, beer is acidic, but it shouldn't do so in a few years. Getting on to a decade, perhaps yes, but certainly not to the point of exposed metal. I would think contact with chemicals from the plastic would be a bigger concern.
    *IF the inside has oxygen scavenging posibility, will it release the enclosed oxygen?
    - - - NO, but it might not scavenge it. I believe it has to be upright for that, not in liquid.
    *Cap can pop of the bottle because laying the bottle down creates to much pressure?
    - - - NO, no more so than if upright. That shouldn't happen with a properly packaged beer. Low filled bottles are something to avoid, they'll put more pressure on the exposed areas.
    *..... ? - - - Some will argue that laying a beer on its side exposes more surface area to the oxygen already in the beer but I don't believe that to be the case.

    2) How is it possible that oxygen can enter the bottle?

    *the plastic has a very small leak?
    - - - That's always a possibility, but probably not. However, you never really know. Caps are generally spun around in a "pool" of other caps before they find their way into the cap chute and they could become damaged. Another issue is that a cap may not be crimped on as tightly as it should be which can happen for a number of reasons.
    *with time the plastic degrades and so letting some oxygen in and pressure out?
    - - - It will degrade, dry out, and shrink but only over a very long period of time, longer than you should be aging for sure.
    *it can travel trough the plastic? (should not be the case)
    - - - NO, oxygen cannot fully permeate the plastic until it breaks down after many, many years. It would go around it before that happened. There could be some minor transfer though, but I doubt that would be any worse on the final product than the oxygen already in the beer.
    *....?
     
    #2 NeroFiddled, Apr 18, 2018
    Last edited: Apr 18, 2018
    skeevn likes this.