Call: 0175-801-5553
  • Our speciality
  • Available timbers
  • Main doors
  • Videos
  • Door
  • Blog
  • FAQ

Wooden Door and Door Frame Manufacturing Company.

  • Home
  • Catalog
  • Warranty
  • Frame
    • Size Comparison Between Frame and Shutter
  • About us
  • Gallery
  • Contact
প্রাইসজানুন
  • Home
  • BLOG & STORIES
  • About timber
  • Timber Seasoning

Timber Seasoning

Rafiqul Alam Molla (Managing Director)
Tuesday, 08 December 2015 / Published in About timber

Timber Seasoning

Seasoning is one of the most important factors in the furniture and door manufacturing industry, besides selecting the right timber, correctly sectioning, and properly sawing to your desired sizes and thicknesses. Without proper seasoning, door, frame, and furniture may be manufactured and used but the problem is, after a certain period of time the door and the furniture will naturally dry over the period of time. When they get dried they will shrink a certain percent and, that causes the whole problem. Since wood shrinks when they dry and shrinkage causes the wood to bend or crack, if the timber is matured then the shrinkage will be less compared to if the immature timber is used for manufacturing. This shrinkage issue is a big problem especially in frame and door manufacturing, if this takes place in furniture it is less noticeable but, when it comes to quality it’s a big issue. The quality of a door mainly depends on whether the door will bend or crack or not. So, whether we are manufacturing door, frame, or furniture, Kiln-Dried seasoning is a must. Proper seasoning doesn’t mean that, we will lay the timber in the sunlight with few sticks for 3 months and the moisture will come out and it’s done. For natural seasoning, we may stick the lumber properly and lay in a shade for 5/6 month, sometimes more, then the timber may be used for furniture, but not for the door.

When we are seasoning the timber naturally, it is drying slowly through porisrobon system, which is a natural and slow process but, doesn’t take care of the problem properly. The cellular membrane in the cells in the wood causes the problem, when we dry the lumber in a natural process, moisture from the lumber comes out of the cellular membrane of the tumbler gradually, and the cellular membrane shrinks while the moisture comes out but the cellular membrane stay active to suck the moisture in when it get the environment to do that. In the rainy days the lumber sucks the moisture in from surrounding air with a short time and releases it slowly through parisrobon gradually. Here a key problem with the factor of shrinkage and expansion of any wooden product is caused by the mechanism of the cellular membrane. When the tree is dead, who cares, kill the lumber properly, so that the cellular membrane mechanism doesn’t cause any more problems. We are going to destroy the cellular membrane permanently through mechanical seasoning, another word which is called Kiln-Dry, with this mechanism when the temperature in the chamber goes up to 100 degrees celsius, also the temperature of the lumber inside the chamber. The water inside the cellular membrane boils to steam and the volume steam inside the cellular membrane increases rapidly, the cellular membrane gets busted and get destroyed. Cellular membrane is the main reason for the expansion and the contraction of the lumber due to season change. Which causes the door to bend, crack, and honeycomb.

There are many different kind of kiln-dry in the market like, Solar Dry, vacuum-kiln, Natural gas heat Kiln-Dry, Firewood het Kiln-Dry. Any of this Kiln-Dry Chamber will serve the purpose properly, except the solar dry system, which is pretty time consuming and some of the cellular membrane may not be destroyed.

  • Why lumber blends

Kiln-Dry chamber is an insulated room with high R-value insulation, have an insulated door, which we can open or close for uploading and
downloading the timber, with a capacity of around 400 cft in each load. Has a heater of certain BTU capacity to make sure we can boil all the moisture out of the lumber in a certain seasoning time. We run the heater continuously at high temperature for 12 hours, and rest for 12 hours and continue this process for 4 days. After running the kiln-dry chamber for 48 hours, the moisture content comes down to 3-4%, then we let the lumber cool down in the chamber for several hours and take it out and let it sit for a couple of days to suck the moisture up to normal moisture content, like 14%, which is a standard moisture content for our country.

  • What happens during 96 hour

We organize the lumber inside the kiln-dry chamber with sticks size 1.5”x 2”, we create a gap

between the lumbers, every 18” to make sure the sticks are vertically straight and evenly distributed like shown in the picture;

Lumbers is placed in the chamber as shown above and circulate hot air through the stick gaps to the timber at 100 degree Celsius for 96 hours, Specially made heater beside the chamber produces the heat and circulate through the lumber in the kiln- dry chamber, with a powerful blower to pump the hot air from the heater to the chamber and lumber. Due to this high temperature, most of the moisture will turn into steam and the chamber get supersaturated with steam and we take the steam out through a special condensation system, so there will be no damage to the lumber, while the temperature is up to 100 degree Celsius the moisture inside the cellular membrane turns in to steam, where the volume of steam is 1700 times than the water inside the membrane, so the membrane gets busted and destroyed instantly. The moisture-absorbing mechanism gets destroyed, no longer in the rainy season the door can get expanded out of limit.

  • Diagram of the seasoning chamber.

Cellular membranes can only be destroyed by the mechanical kiln-dry chamber and get rid of the expansion and contraction mechanism. Not knowing, some people make comments like, seasoning timber with mechanical system temper of the timer get weaker, which is not true at all, timber get longer life and get stronger. There are many other ways manufacturers dry their timbers, some of them are not profitable for commercial purpose, some of them are quite expensive to purchase the chamber, some of them are expensive and some of them are very time consuming, which is not suitable for commercial use at all. It is essential for the large wood industry to have the timber air dried first, whether they are doing just for seasoning or the manufacturing, whether the door, frame or furniture

  • Image of a cell with the cellular membrane is shown


After we get the timber out of the chamber, we make sure the moisture content is within the right position, we test the moisture content with a digital moisture meter to make sure of that if we find the moisture content over 14%, we let the seasoning chamber run for little longer and check before we take the lumber out of the kiln- dry chamber, the moisture content usually contains to 3-5 %, now know for sure the cellular membrane are completely destroyed as we desired, and after couples of days, moisture gets up to 13-15 %, after from air. Now we know the lumber is ready for machining and make a door, frame, or Furniture.

+ Latent Heat = 

Volume ratio between water & steam = 1 : 1700

  • Tweet

What you can read next

Door and Frame production
Mahogany Timber From Jessore | Wood World
Mahogany timber
How to select quality Mahogany timber

14 Comments to “ Timber Seasoning”

  1. TashaYPanaro says :Reply
    September 3, 2016 at 10:50 pm

    You can certainly visit your skills within the article you write.
    The sector hopes for much more passionate writers like you
    who aren’t afraid to bring up the way they believe.
    Always follow your heart.

  2. AureaMIfie says :Reply
    September 4, 2016 at 1:25 pm

    This is really interesting, You are a very skilled blogger.

    I’ve joined your feed and look forward to seeking more of your magnificent
    post. Also, I have shared your site in my social networks!

  3. AustinGGingg says :Reply
    September 6, 2016 at 11:40 pm

    We’re a small grouping of volunteers and opening a whole new scheme inside our community.
    Your site offered us with valuable info to be effective on. You may have
    done an impressive job and our whole community is going to be thankful
    to you personally.

  4. MoseNCashion says :Reply
    September 15, 2016 at 11:30 pm

    Aw, this was an extremely good post. Taking the time and actual effort to generate a really good article but what can I say I procrastinate a whole lot and never manage to get anything done.

  5. MelIBrightly says :Reply
    September 17, 2016 at 7:46 am

    Very descriptive blog, I liked that bit. Will there be described as a part 2?

  6. AlannaGYax says :Reply
    November 17, 2016 at 3:09 am

    Hi there, this weekend is pleasant in favor of me, since
    this time i am reading this great educational piece of writing here at
    my home.

  7. cheap madden mobile coins says :Reply
    January 11, 2017 at 5:49 pm

    If some one desires to be updated with newest technologies
    afterward he must be pay a quick visit this site and be up
    to date everyday.

  8. Borvest Inkral says :Reply
    July 23, 2017 at 10:30 pm

    This design is steller! You obviously know how to keep a reader entertained. Between your wit and your videos, I was almost moved to start my own blog (well, almost…HaHa!) Great job. I really enjoyed what you had to say, and more than that, how you presented it. Too cool!

  9. GPU Mining says :Reply
    February 19, 2018 at 4:14 am

    I am just starting to learn about all of this. Thanks!

  10. minecraft says :Reply
    September 23, 2018 at 8:30 pm

    Very nice post. I just stumbled upon your weblog and wished to say that I’ve truly
    enjoyed browsing your blog posts. In any case I will be subscribing to your
    rss feed and I hope you write again soon!

  11. Sannykat says :Reply
    December 10, 2018 at 12:31 pm

    Make a more new posts please 🙂
    ___
    anny

  12. Annie Beers says :Reply
    February 3, 2019 at 5:16 pm

    Hi, I do believe this is an excellent site. I stumbledupon it 😉 I will return yet again since I bookmarked it.
    Money and freedom is the best way to change, may you be rich and continue to guide other people.

  13. minecraft says :Reply
    April 20, 2019 at 10:52 pm

    Quality content is the crucial to attract the viewers to pay a quick visit the web site, that’s
    what this website is providing.

  14. Apex Legends says :Reply
    April 26, 2019 at 6:57 am

    Way cool! Some extremely valid points! I appreciate you writing this write-up and the rest of the website is really good.

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Recent Posts

  • How to select quality Mahogany timber

    How to select quality Mahogany timber? Mahogany...
  • Mahogany Timber From Jessore | Wood World

    Mahogany timber

    Mahogany is a very high-quality timber if it&#8...
  • using of dowel pin in door | Wood World

    Making door using dowel pin

    About 10 years ago we started (Bangladesh) star...
  • Door and Frame production

    We think, biggest the tree, the most matured it...
  • Wood comes from timber

    Wood comes from timber, and timber comes from t...

Archives

  • July 2016
  • April 2016
  • December 2015

Categories

  • About timber

Important links

  • Door
  • 25 years warranty
  • Blog post
  • Catalog
  • Contact Us
  • Wooden Frame

Important links

  • Home
  • About us
  • Catalog
  • Anniversary
  • Warranty
  • Contact us

Blog posts

  • How to select quality Mahogany timber

    How to select quality Mahogany timber? Mahogany...
  • Mahogany Timber From Jessore | Wood World

    Mahogany timber

    Mahogany is a very high-quality timber if it&#8...

Head office

Address: Raod: 29/Ka; Plot: 4; Mirpur Rupnagar Abashik Elaka, Dhaka – 1216
Phone: 01758015553; 01758015557
Email: sales@woodworldbd.com

Wooden Door and Door Frame Manufacturing Company.

Copyright © 1999-2021. Wood World BD. All rights reserved.

TOP
হোয়াটসঅ্যাপ
ফোন করুন
-

Customer Reviews

Wood World BD

850+ Customer Reviews

Ahmed Miazi 13/03/2022

We have ordered 65 shegun doors. They are processing and their customer updating system is very unique.

Rahim Shikdar 02/02/2022

Facebook
1200 doors and frames have already been taken from them. And also they are supplying frames for our running projects. Good quality and service.

Ahmed Shikdar - Uttara 2/27/2022

Facebook
Finishing is good. I bought only three doors from them. Right time delivery.

Sultan Mahmud 4/19/2022

Facebook
I have bought 406 doors from them. Already 5 years gone, none of the doors is broken or cracked. Their quality is very impressive. I will work with them on another big project in the ___City area. All the best Wood World.

Tamanna Hossain

Google
Variety of designs. I have bought 2 doors for my house.

Abdul Kayum 20/10/2020

Google
Nice finishing and material quality. I have visited their factory a few days ago.

Amir Hossain 20/10/2021

Google
Their quality is good. But the price is little high.

Abu Ibrahim Molla 09/10/2021

Google
Beautiful door design.

Kazi Rasheduzzaman Bhuiyan 07/09/2021

Google
Nice door with nice finishing. I bought 5 mahogany doors for my new flat. Highly recommended. You can try them. Thanks

Md. Sultan Khan 21/04/21

Google
Best door company.
More comments...
4.9
Excellent