{"id":3573,"date":"2026-10-15T13:50:35","date_gmt":"2026-10-15T05:50:35","guid":{"rendered":"http:\/\/www.ciel-j.com\/blog\/?p=3573"},"modified":"2026-10-15T13:50:35","modified_gmt":"2026-10-15T05:50:35","slug":"is-kraft-paper-waterproof-49fe-be35b4","status":"publish","type":"post","link":"http:\/\/www.ciel-j.com\/blog\/2026\/10\/15\/is-kraft-paper-waterproof-49fe-be35b4\/","title":{"rendered":"Is kraft paper waterproof?"},"content":{"rendered":"

Hey there, it\u2019s Jake from [Kraft Paper Co.] \u2013 your go-to guy for all things kraft paper. I get asked this question at least a dozen times a day, especially lately with folks shipping custom products, wrapping food, or even building little outdoor displays, and honestly? It\u2019s not a straight yes or no. Let\u2019s break this down like we chat over a coffee, no fancy textbook jargon, just real stuff I\u2019ve learned from 7 years of selling and testing this stuff day in and day out. Kraft Paper<\/a><\/p>\n

<\/p>\n

First off, what even is kraft paper? A lot of people think it\u2019s just that brown, crinkly stuff you get from the grocery bag, but it\u2019s way more varied. It\u2019s made from chemical pulping of wood \u2013 basically, cooking wood chips in a strong alkaline solution to separate the cellulose fibers without breaking them too much. That\u2019s why it\u2019s so strong, right? Unlike regular paper, it\u2019s got these long, tough fibers that give it that tear-resistant vibe. But \u201cwaterproof\u201d? That term gets thrown around so loosely these days, I think a lot of people don\u2019t actually know what it means. Waterproof means water can\u2019t get through at all, full stop. Water-resistant means it can handle a little moisture without falling apart, but soak it long enough and it\u2019s done. Big difference.<\/p>\n

Kraft paper, in its plain, uncoated form? Definitely not waterproof. Let\u2019s test this with a quick at-home experiment I did last month for a small business client who wanted to wrap artisanal soaps. I grabbed a standard 40 lb. kraft sheet (that\u2019s the stuff we use for most retail packaging) and dropped it in a bucket of water for 10 minutes. When I pulled it out, it was soggy, translucent, and tore if I looked at it wrong. The water just seeped right through the fibers. Why? Because those long cellulose fibers are hydrophilic \u2013 they love water. Water molecules stick to them, pull them apart, and that\u2019s why paper breaks down when it\u2019s wet. Plain kraft paper doesn\u2019t have any barrier to stop that from happening. That\u2019s the raw truth, no sugarcoating it.<\/p>\n

But wait, that\u2019s only the plain stuff. If you need something that can handle a little moisture, not full-on waterproof, but enough to keep your products dry in a rainy delivery or a damp warehouse, that\u2019s where specialty kraft paper comes in. We offer a water-resistant version that\u2019s treated with a thin polymer coating \u2013 usually polyethylene or a bio-based coating these days, since a lot of our customers care about sustainability. I tested this one too, right after it came in from the mill last quarter. I sprayed it with a garden hose for 5 minutes straight, no drip-through, no warping. It still got a little damp on the edges after 10 minutes, but that\u2019s way better than plain kraft. I even used it to line a picnic cooler last summer, kept the sandwiches dry for 2 hours at the lake. Game changer for outdoor events.<\/p>\n

Now, let\u2019s talk about when you actually need waterproof kraft paper, not just water-resistant. Is that a thing? Yeah, if you get the right combination of coating and weight. Some of our heavy-duty 60 lb. kraft with a dual-layer polyethylene coating is basically waterproof for short-term exposure. We had a construction supply client who used it to wrap concrete pavers \u2013 they\u2019d leave them on job sites for a day or two in light rain, no problem. But if you submerge it, like drop a wrapped part in a puddle for an hour? Water will seep through the seams (since we glue the rolls, not weld them) and eventually break down the fibers. Full submersion is still not its thing, no matter what coating you use.<\/p>\n

I get why this confusion happens. A lot of suppliers out there slap a \u201cwaterproof\u201d label on anything that doesn\u2019t fall apart after a quick splash, which is misleading. I\u2019ve had customers come to me with their last order saying \u201cyour competitor said their kraft is waterproof and it fell apart in a rainstorm\u201d and I just nod, because that\u2019s the stuff that\u2019s barely coated, if at all. At our shop, we\u2019re honest about what our products can do. If you need plain kraft for shipping dry goods, that\u2019s what we\u2019ll sell you, no extra fluff. If you need something for a bakery that might get a little sweaty from warm bread, water-resistant coated kraft is the way to go. If you\u2019re wrapping something that\u2019ll be out in the rain for a day? The heavy-duty waterproof option is worth the extra cost, trust me.<\/p>\n

Also, let\u2019s not forget about eco-friendly options, which so many of our customers care about now. A lot of people assume coated kraft is bad for the planet, but we\u2019ve been working with our mill for two years on a bio-based water-resistant coating made from corn starch and soy, no plastics. It works almost as well as the polyethylene stuff, and it\u2019s compostable, which is a huge win for brands that are trying to cut their plastic footprint. Last month we sent a roll to a organic farm that uses it for their veggie wraps, and they reported it stayed dry through a morning dew and broke down in their compost pile in 30 days. That\u2019s the kind of stuff I love working with, no greenwashing, just real, functional products.<\/p>\n

Wait, let\u2019s clear up another myth: people think all brown paper is kraft. Nope. There\u2019s a difference between kraft and regular groundwood paper, which is what\u2019s in copy paper or notebook paper. Groundwood paper is made by mechanically grinding wood, so the fibers are shorter and weaker, and it yellows over time. Kraft is way stronger, that\u2019s why it\u2019s used for packaging. But even kraft, when it\u2019s plain, isn\u2019t water-resistant. I had a customer last month who ordered 100 sheets of brown \u201ckraft\u201d to line his fish tank filter, and it fell apart in 10 minutes. Turned out he got the cheap groundwood stuff from a big box store, not actual kraft. Lesson there: always check the specs if you need performance, not just color.<\/p>\n

So when would you use plain kraft? If you\u2019re wrapping dry t-shirts, packing paper for moving, making gift bags that\u2019ll stay inside \u2013 it\u2019s perfect. It\u2019s cheap, strong, recyclable, and does exactly what it\u2019s supposed to do. But if you\u2019re shipping coffee mugs that might get caught in a rainstorm, wrapping frozen food, or storing items in a damp basement, you need to step up to coated kraft. And if you need something that can handle a little more, the heavy-duty version is worth every penny.<\/p>\n

I\u2019ve been in this game long enough to know that there\u2019s no one-size-fits-all answer to this question. A lot of sales guys will tell you whatever you want to hear to make a sale, but I\u2019m not that guy. Last week, a small candle maker came in looking for \u201cwaterproof kraft\u201d to wrap their soy candles, and I told them straight up: the coated water-resistant stuff will keep the wax safe from condensation in transit, but if they want something that can be sprayed with a hose, we have that, but it\u2019s a little thicker and costs more. They went with the standard coated stuff, and emailed me two days later saying their first order of shipments arrived completely dry, no issues. That\u2019s the win I care about, not upselling someone something they don\u2019t need.<\/p>\n

If you\u2019re sitting here right now wondering which kraft paper you actually need for your project, let\u2019s keep it simple. First, ask yourself: will this paper be exposed to any moisture? If the answer is no, plain kraft is your best bet \u2013 cheap, versatile, eco-friendly. If yes, then you need coated kraft, and the level of coating depends on how much moisture it\u2019ll face. For light humidity or quick drips, standard water-resistant is fine. For rain, condensation, or minor submersion, go for the heavy-duty waterproof option. And if you care about plastic-free, ask us about our bio-based coated kraft \u2013 it works just as well, and you can feel good about using it.<\/p>\n

We don\u2019t just sell paper, we help our customers figure out what works for them. I\u2019ve had so many people come to me with messes because they bought the wrong paper for their project, and now I\u2019m here to save you the trouble. If you\u2019re working on a project and you\u2019re not sure which kraft paper is right for you, don\u2019t guess \u2013 reach out. We can chat about exactly what you need, no pressure, no fine print. Just real advice from someone who\u2019s spent years testing this stuff, and a range of products for every need, plain to specialty.<\/p>\n

<\/p>\n

At the end of the day, kraft paper isn\u2019t waterproof \u2013 at least not the plain stuff \u2013 but there are options out there that can handle moisture way better than you might think. You just have to know what to look for, and who to buy from. And that\u2019s where we come in. If you\u2019re ready to stock up or test a sample for your next big order, hit us up. We\u2019ll get you what you need, on time, at a fair price. No fluff, no lies, just good kraft paper.<\/p>\n

Specialty Paper<\/a> References:<\/p>\n

    \n
  1. Technical Association of the Pulp and Paper Industry (TAPPI). (2022). Kraft Paper Properties and Applications. TAPPI Press.<\/li>\n
  2. Environmental Paper Network. (2023). Coated Paper Performance and Sustainability. EPN Report.<\/li>\n
  3. American Forest & Paper Association. (2021). Pulp and Paper Manufacturing Processes: Kraft Pulping. AFPA Technical Brief.<\/li>\n<\/ol>\n
    \n

    Dongguan Banyan Material Co., Ltd.<\/a>
    We are one of the most experienced kraft paper manufacturers and suppliers in China, also support customized service. Please feel free to wholesale bulk eco-friendly kraft paper from our factory. Quality products and reasonable price are available.
    Address: NO.167, Meijing West Road, Songmushan, Dalang Town, Dongguan City, Guangdong Province, China
    E-mail: Sales_chris@yspaper.com
    WebSite:     https:\/\/www.paperyoung.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

    Hey there, it\u2019s Jake from [Kraft Paper Co.] \u2013 your go-to guy for all things kraft … Is kraft paper waterproof?<\/span>Read more<\/a><\/p>\n","protected":false},"author":108,"featured_media":3573,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[3536],"class_list":["post-3573","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-kraft-paper-447f-be6d06"],"_links":{"self":[{"href":"http:\/\/www.ciel-j.com\/blog\/wp-json\/wp\/v2\/posts\/3573","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.ciel-j.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.ciel-j.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.ciel-j.com\/blog\/wp-json\/wp\/v2\/users\/108"}],"replies":[{"embeddable":true,"href":"http:\/\/www.ciel-j.com\/blog\/wp-json\/wp\/v2\/comments?post=3573"}],"version-history":[{"count":0,"href":"http:\/\/www.ciel-j.com\/blog\/wp-json\/wp\/v2\/posts\/3573\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.ciel-j.com\/blog\/wp-json\/wp\/v2\/posts\/3573"}],"wp:attachment":[{"href":"http:\/\/www.ciel-j.com\/blog\/wp-json\/wp\/v2\/media?parent=3573"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.ciel-j.com\/blog\/wp-json\/wp\/v2\/categories?post=3573"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.ciel-j.com\/blog\/wp-json\/wp\/v2\/tags?post=3573"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}