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What is WBP glue – which is commonly used for WBP plywood / film faced plywood

Boiling test for plywoodWBP stands for “Weather and Boil Proof”

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 “Weather and Boil Proof”, the WBP performance is inspected through “Water Boiling Proof” test . The requirement is listed under European plywood standard EN 314-2 Plywood – Bond quality – Requirements Bond Class 3: Exterior conditions [Reference 1 ].

WBP is the property of exterior plywood

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 bonding property / feature of glue . If a glue has WBP property, the glue will can be called WBP glue .

“Water Boiling Proof” test for plywood

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 .

WBP glue : Melamine glue and Phenolic glue

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 .

Test WBP glue bonding quality

Applications of WBP glue for producing plywood

Usually , people like to 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 Weather-boiled-proof(WBP) property.

[Reference 1 ] :Bond Class 3: Exterior conditions on page EN 314-2: Plywood – Bond quality – Requirements

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23 Responses

  1. Abhi****** 2008/09/22 at 07:50:13

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

  2. john 2009/09/28 at 15:45:15

    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

  3. Pet****** 2009/10/02 at 02:55:28

    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.

  4. Ale****** 2010/01/23 at 13:36:31

    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

  5. Mason Pan 2010/01/23 at 20:23:20

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

  6. Lin****** 2010/08/27 at 05:04:42

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

  7. Mason Pan 2010/08/27 at 06:04:12

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

  8. Shi****** 2011/05/22 at 12:30:24

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

  9. mujeeb 2011/07/04 at 01:01:16

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

  10. Mason Pan 2011/07/18 at 22:20:05

    For E1 or E2 glue, I think this is helpful : the Limit of Formaldehyde Emission of Wood Based Panels

    For E0 glue, What’s E0 (EO) Grade For Formaldehyde Emission of Wood Based Panels

  11. Mason Pan 2011/07/20 at 06:11:23

    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.

  12. Hus****** 2011/07/25 at 08:07:09

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

  13. Sir****** 2011/08/25 at 09:03:37

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

  14. Ti****** 2012/05/03 at 05:51:49

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

  15. La****** 2013/02/04 at 06:07:16

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

  16. Mason Pan 2013/05/11 at 19:05:02

    EN 314-2 should be phenolic glue.

  17. MI*** 2017/05/07 at 04:32:36

    What is the best flow time and PH of PF Resin for better bonding in ply

  18. NG****** 2018/03/12 at 23:49:47

    we need buy plywood waterproof 6mm*2000*3800: 900pcs
    could you please check and feedback for us
    thank you
    my email : n******@******.vn

  19. Mo****** 2019/11/28 at 02:37:13

    can we use maxibond es-10 glue to bond PVA tiles to film coated plywood??

  20. Plywood Suppliers 2019/12/21 at 08:47:53

    We haven’t done this before. You can try it. And then do the glue bonding quality test to Check the results.

  21. Is****** 2020/01/29 at 01:31:58

    Our company supplies plywood of different grades, sizes, thikness and glue property. Contact me: plywood@******.cn, +8618******

  22. Endale 2020/06/05 at 04:46:48

    Dear Sir, Greeting!

    Would you please send me Marine Plywood leaflets which describes form-work structures.

    Regards,
    Endale
    Project Manager

  23. Plywood Suppliers 2020/06/13 at 09:04:21

    Please check our products information here : https://www.plywood.cc/types-of-plywood/

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