Filed Under (Knowledge) by Mason Pan on October-25-2007

In plywood business , a lot of people sell / buy WBP plywood / film faced plywood . But only a few people know the real meaning of the word "WBP" . Thus, what is the real meaning of WBP ?

WBP stands for "Water Boiled Proof" . If you use WBP glue for the plywood / film faced plywood, the panel will can be exposed to weather, water and moisture for a long period (some maybe permanently ) without delamination . Like the word of "MR", WBP is not the name of a specific glue . WBP is only a kind of property/feature of glue . If a glue has WBP property, the glue will can be called WBP glue .

As a simple method of test for WBP plywood, you can put the plywood samples into the boiling water . If the samples have not delaminated in boiling water for a long period, then we will can say the plywood samples have WBP property and conclude that the samples are WBP plywood samples .

The common WBP glues are melamine glue and phenolic glue . Generally speaking, WBP(ordinary melamine) plywood can be in boiling water for 4-8 hours without delamination and WBP(better melamine) plywood can be in boiling water for over 10 hours or even 20 hours without delamination . WBP (phenolic) plywood can be in boiling water for 24-72 hours without delamination . The best WBP(phenolic) glue can be regarded as permanent adhesives .But the water boiled proof period of plywood is depended on not only the quality of WBP glue, but also the craftsmanship of production .

Usually , people like use WBP glue for exterior plywood , such as Marine plywood, film faced plywood (formwork plywood), structural plywood, plywood for signs and so on . But in practice, WBP glue is used for interior plywood as well, such as furniture plywood, cabinet plywood, plywood underlayment and so on , which are also required by customers to have water-boiled-proof(WBP) property.

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(17) Comments    What next?

Abhi****** on September 22nd, 2008 at 7:50 am #

Regarding Glue,the information is absolutely necessary but Glue is made by which chemical,that is not mentioned.

john on September 28th, 2009 at 3:45 pm #

i would like to know if the glues used in “wbp glue” identified ply is safe to make breeding boxes for parrots and other birds, as the birds chew the ply

Pet****** on October 2nd, 2009 at 2:55 am #

We are supplier of large size shuttering plywood:
6500 ,5400, 5200 x 2500 or 2000 mm x 19, 21 mm 120/180/200/240/360/450 gr/m² film
Pls. contact us for more technical information.

Ale****** on January 23rd, 2010 at 1:36 pm #

Iso board weathers the best and does not formaldehyde which is now rated as a carcinogen by the IARC
It is better not to use formaldehyde emitting adhesives-USE ISOBOND 90
or similar-Stay Well

Mason Pan on January 23rd, 2010 at 8:23 pm #

Yes, it’s better to use good WBP phenolic glue or E1, E2 glue .

Lin****** on August 27th, 2010 at 5:04 am #

others say that melamine is MR glue. WBP glue is phenolic glue that right.

Mason Pan on August 27th, 2010 at 6:04 am #

No, it’s wrong . The best melamine glue is as good as phenolic glue.

Shi****** on May 22nd, 2011 at 12:30 pm #

Can someone tell me what is E1, E2 Glue used for manufacturing Plywood.Is it of better grade then WBP.

mujeeb on July 4th, 2011 at 1:01 am #

what is the meaning of E0. E1 and E2 glue and V313 glue? what is the diffrence between them?

Mason Pan on July 18th, 2011 at 10:20 pm #
Mason Pan on July 20th, 2011 at 6:11 am #

If you want to know what’s E1, E2, please read this : the Limit of Formaldehyde Emission of Wood Based Panels . After you read the explanation, you will know you can not compare E1 , E2 glue with WBP glue.

Hus****** on July 25th, 2011 at 8:07 am #

we are trader of wood and Plywood and Borads i any one need the product can contact us

Sir****** on August 25th, 2011 at 9:03 am #

What is E2 glue and which is the best glue for MDF and Plywoods.
Thanks n regards.

Replacing a flat roof on September 13th, 2011 at 1:17 pm #

[…] Jeff put down WBP Plywoodwhich formed the first weather resistant layer and the roof deck itself. WBP Plywood The roof with […]

Ti****** on May 3rd, 2012 at 5:51 am #

I need to buy good quality film face plywood, pls contact me on my email.

La****** on February 4th, 2013 at 6:07 am #

What is wbp compared with EN 314-2. Klass 1-2-3????

Mason Pan on May 11th, 2013 at 7:05 pm #

EN 314-2 should be phenolic glue.

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