After singing the praises of cloth napkins earlier this week. I had a conversation with a friend about them. They do have a down side, over time they lose absorption. I assume that is inevitable but thought I would do some research and experimentation into whether or not some of that absorption could be restored.
I did an internet search and found some good ideas from sites talking about cloth diaper care.
This article in particular. I also read some articles on why the absorption dwindles over time. The main reason is buildup of detergent or fabric softener. Well I don't use fabric softener so I didn't have to worry there. But the laundry soap I do use could be the problem. The fibers can also wear out over time. Since my napkins have been in service for over a decade that may be just how it is.
I was ready to start experimenting! Before I even started my research, I grabbed a handful of clean napkins and started them soaking in white vinegar. Vinegar can be used to break down soap scum so I figured that might be a good place to start. Then I read the article I linked to above. So I devised a second cleaning method: washing them in dish soap. Finally I took half of the dish washed batch and gave them a vinegar rinse. So I ended up with three different processes to test.
Batch #1: Napkins washed in hot water with dish soap, rinsed in plain water
Batch #2: Napkins washed in hot water with dish soap, rinsed in water and vinegar.
Batch #3: Napkins soaked in pure vinegar and rinsed with plain water.
The napkins were then all dried separately. All we had to do now was devise a way to test for absorption. Hmm. I say "we" now because at this point I enlisted my son as a lab assistant. We finally settled on this method: We put each napkin on a plate, poured 1 measured tablespoon of water onto it and watched to see how much soaked in.
At the last second we realize we needed a "Control" so we grabbed two more napkins and tested them with no treatment at all.
Here are the results:
Control: almost no absorption, in fact you could play with the water, rolling it around the napkin.
The water just sat there.
Batch #1: (These were washed in dish soap and rinsed without vinegar) These still had beading water but a little bit of absorption.
Trust me it soaked in a little bit.
Batch #2: (These were washed in dish soap and rinsed in water and vinegar) These had better absorption, but not as much as I'd hoped.
Batch #3: (These were just soaked in vinegar then rinsed) These had some absorption, but not as much as the second batch.
Hmm. This worked some.
Thoughts and Conclusions :
Well, while these methods seem to work, they do so only marginally. I was dissatisfied with our results. So far the dish soap washing combined with a vinegar rinse seemed to work the best. I wondered if I could find a method that worked better. I went back to the results of my net search and read the articles again. I decided to try one more drastic thing.
Round 2!
Batch #4:
Based on the stripping cloth diaper method I tried a much more complicated method.
1. Put the napkins in a large pot. Fill the pot with enough water to cover the napkins by a couple of inches. Put the pot on the stove and bring the water almost to a boil.
2. Take the pot off the heat, and set it in your sink (the next steps may cause it to overflow). Add 1/2 tablespoon dish soap and mix well (I used a potato masher). After agitating the napkins and soap for a while add 1 cup baking soda. This will cause the whole thing to foam up. Mix well until the foam dissipates.
3. Drain and rinse in hot water. (I filled the pot covering the napkins and stirred well with my hands to do this). Repeat the rinsing process until the rinse water stays clear. (This took me six times.)
4. Add warm water to cover napkins again and add 1 cup white vinegar. Let sit for at least 10-20 minutes. Rinse once or twice more to remove the scent of vinegar.
5. Dry the napkins.
Then I called in my lab assistant and we tested them again.
We used a control again and had the same water beading results.
Then the Batch 4 napkins were tested.
See the water beading on the green part of the napkin? Uggh!
I was very frustrated, we tested 3 or 4 napkins and the results were no better than the first round tests. So my assistant and I talked about why that might be and what we could do differently. As we talked we played with the water beading up on the napkins. With this mild agitation the water started to absorb into the napkin. We realized that our absorption test was flawed. You don't use a cloth napkin by pouring stuff onto it. You wipe stuff up with it!
So we quickly devised a new test. We poured a measured tablespoon onto the open napkin, then folded it over and pressed on it. This showed how much it would quickly absorb. We then poured the rest of the water out of the napkin onto the plate and used the napkin to try to wipe the rest of the water up.
This new test showed drastic improvements between the treated napkins and the control ones.
Thoughts and Conclusions of Round 2:
So, this much more labor intensive method does show some results in restoring the absorbancy of my napkins. Unfortunately we fine tuned the testing method after we had finished the round 1 tests, so I have no real idea if the intensive method is really necessary. Maybe later I will try again.
So the answer is yes, you can restore some absorbancy. It may be more work than it's worth, but you may extend the life of your napkins by years.
I did find one style of my napkins did not absorb much at all no matter what I did. Since my napkins have been in use for over a decade, the tags are long gone, but I suspect that they are made of synthetic fibers. At least they feel more "plasticy" than the other napkins. I talked to a couple friends to get their thoughts about that conclusion, and we agreed that the synthetic fabric napkins just don't absorb well or last as well over time. Something to keep in mind if you are going to buy new napkins.
I hope this was helpful or at least interesting. Please leave comments, questions and ideas for future experiments in the comments here or on the Cascade Living Facebook page. I am toying with the idea of making experiments a regular feature of the blog.
Thoughtfully,
Kristin