k-cup rim opens up during brewing

I have trouble with my k-cup spitting grounds inside the machine where the k-cup sits during brewing.

I don't believe the problem is the puncture needles or the top gasket. I have cleaned and checked both of these, many times, and the needles seems to be puncturing normally. I think the problem is the k-cup ITSELF.

I have observed that, in about 2-3 out of every 5 cups, the top rim of the k-cup actually separates... so, the leakage is not coming from the needle hole area. The leakage is coming from the edge of the k-cup. It is as if there is too much pressure INSIDE the k-cup during brewing, which forces the top covering of the k-cup, causing it to separate from the plastic cup.

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Who's K-Cups are you using?

I would recommend you speak with Keurig to let them know and to see if they have a fix.

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I did, multiple times. They have no solution. I got rid of my THIRD Keurig with the same problem and will never buy another.

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I was having the same frustrating problem and I believe I have found a solution. My machine was not clamping down on the kcup lid with enough force to maintain a good seal, probably a result of heat over time used. I simply put a thin rubber band under the edge of the lid of the kcup which increased sealing pressure on both the cup rim and the piercing needle seal. My machine works like new again and brews a great cup of coffee without the grounds in the cup or bursting out all over the counter. A thin o-ring that will fit snugly under the kcup lid might be a better choice, and you must remember to remove it before throwing the kcup into the trash.

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@ljpne to much air inside the k-cups can cause this but that would be a manufacturer defect which we cannot fix. Change your brand and where you buy the K-cups. See if it continues. If your K-Cups have a domed, rounded top use a small needle and puncture the top before using it in your Keurig

If it does, you do want to clean the puncture needles. your Keurig has two, one on top and one on the bottom, If anyone of these two is clogged you will get a K-cup explosion due to excessive pressure inside the cups. I would start by cleaning the puncture needles since that would be the easiest fix. How to open and clean Keurig Coffee Maker

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Try some real Keurig K-Cups to see if the problem is unique with the brand you had bought. You may want to give then a call to complain if the real ones don't have problems.

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I had two bad 48-count boxes of Green Mountain half-caff, not “clones” or counterfeits, codes were confirmed by Keurig and they replaced both boxes. From both boxes, 9 out of 10 pods were clogging. During same period, 19 out of 20 other pods (Starbucks Veranda and Sumatra, Barista Italian roast, Gevalia, Green Mtn Dark Magic decaf) brewed perfectly. Now from the replacement box from Keurig, the second half-caff pod seam split open. It’s too soon to know if the problem continues with this box but I’m afraid this indicates a manufacturing problem of wider scale. For what it’s worth, I pre-punctured every pod by pressing the pod down into the bottom needle. So… in my case it’s not a case of excess pressure in the sealed pod nor is it a case of counterfeit pods. I suspect: 1) the pods are overfilled, 2) the coffee is ground too fine, or 3) there’s a problem with filter built into the pods. I’ve shared pod info with Keurig so hopefully they find and resolve the issue. Meanwhile, no more Green Mtn Half-Caff pod purchases for me.

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I’m having the same issue with my green mountain breakfast blend light roast I normally buy my coffee from Target but the last two boxes I’ve bought at Walmart and there’s a definite difference in the KCups with Target the cups have a bubble as if they have been blown up with Walmart they’re flat as if they were at high a altitude and brought back down then at the end of my brew the cup will open at the rim and it spits coffee grounds out....I never had this problem until I changed where I purchased my cups so I am going to buy cups from Target and see if there’s a difference at all.....I know my stuff not clogged either because after every cup brewed I brew 4-8 ounces of water after every cup, change my filter and descale as recommended but if also checked the K cup and the foil top literally separates from the pod itself so I guess I will see if buying them from Target makes a difference

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Previous answer is bad advice.

If the foil lidding is separating it is because of inferior sealing. This could be caused by a few reasons.

My suspicion is that you have purchased clones rather than original Keurig brands. Thermal sealing done by packaging equipment other than Keurig Incorporated can be less reliable.

It could also be a polypropylene compatible issue from a Chinese manufacturer of knock off cups. (Water temperature from brew cycle causes seal to fail)

Either way, there is a high probability that this is a defective cup purchase. If it continues after you try different capsules, please continue thread and I can offer a final suggestion.

Darren

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Darren Footz "Previous answer is bad advice" really? Why?

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sorry for delay in response turkey,... our experience is that recommending to consumer to clean piercing elements (needles) could damage them, I should have responded with "better advice" as that was rude. ... we have considerable experience in this field

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I have had the same problem with cops across the market, including Kurig brand. It tends to follow cup batches. Letting the extra air out seems to fix the problem. I listened to "the regular advice" on the net to no avail, ended up buying a new machine that I didn't need. Now when I get a bad batch of cups I just make sure to prepuncture them.

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I just had this happen for the first time with a 48 count box of Green Mountain Breakfast blend decaf that I purchased from Walmart. I normally have delivered directly from Keurig monthly, but ran out before my scheduled delivery. Prior to getting monthly deliveries, I bought from Target, Caribou, MarketPlace, and others and have never had this problem. I noticed a couple of other people mentioned they got theirs from Walmart, and am curious if there may be an issue with their supplier. It definitely appears to be an issue with the seal. Do I return the remaining unused cups in this box to Walmart, or go directly to Keurig? Does anybody know?

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