contact us for more technical information. Once cured, phenolic adhesive is a solid polymer that is highly durable and moisture resistant. my email : n******@******.vn. As a simple method of test for WBP plywood, you can put the plywood samples into the boiling water . We make plywood with urea formadehyde glue, melamine UF glue, phenolic glue with E1 or E0 formaldehyde emission. Commonly referred to as WBP (Water & Boil Proof) or A Bond when used as an adhesive in plywood, phenol formaldehyde provides the structural and moisture durability required in structural, exterior and marine grades of plywood. Phenol-formaldehyde resins make excellent wood adhesives for plywood and particleboard because they form chemical bonds with the phenol-like lignin component of wood. PVA or PVAc is short for Polyvinyl acetate. Like the word of “MR“, WBP is not the name of a specific glue . Fillers should be added into the PF glue. Phenolic adhesives are used commonly in wood bonding. Iso board weathers the best and does not formaldehyde which is now rated as a carcinogen by the IARC Haven't found your required plywood or film faced plywood ? WBP plywood using ordinary phenolic resin glue can handle boiling water for one to three days. All rights reserved . Investigation of a Formaldehyde-free Cottonseed Flour-based Adhesive for Interior Plywood Nairong Chen, a,b Jian Huang, b and Kaichang Li b, * A new formaldehyde-free wood adhesive, primarily composed of defatted cottonseed flour (CF) and polyamine-epichlorohydrin (K736) resin, was investigated for the preparation of interior plywood. It is a colorless, pungent gas and common volatile organic compound (VOC). UF glue is chosen for its fast curing and wide operating window. The polymer is thermosetting and has to be cured at elevated temperatures. It is waterproof but not weatherproof. Melamine glue plywood can be used in damp or wet places but can not last long under the rain. Phenol Formaldehyde Resin for WBP Grade Plywood This resin when mixed with filler gives a glue mix suitable for the production of exterior plywood. Our company supplies plywood of different grades, sizes, thikness and glue property. Curing agent, glue filler, modifier, buffer, formaldehyde trapping agent, color added in plywood glue. Part of the success of these adhesive resins is due to the formation of bonds between the glue and the phenol-like lignin which is a natural component of wood. Plywood Manufacturing Process in A Chinese Plywood Factory. Phenol Formaldehyde resins make superior wood adhesives and are widely used glues for construction grade wood panels such as plywood and oriented strand boards which need to be waterproof. In this way, the cornstarch and quebracho tannin was introduced in the classic adhesive formulation in order to supply a part of phenol–formaldehyde (PF). No, it’s wrong . The main contents of the glue is formaldehyde and urea. 6500 ,5400, 5200 x 2500 or 2000 mm x 19, 21 mm 120/180/200/240/360/450 gr/m² film Copyright © (China)Nanjing Emburg Co. Ltd. All Rights Reserved. Thus, what is the real meaning of WBP ? Other pressed wood products, such as softwood plywood and flake or oriented strandboard, are produced for exterior construction use and contain the dark, or … And then do the glue bonding quality test to Check the results. After you read the explanation, you will know you can not compare E1 , E2 glue with WBP glue. 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. Generally, melamine adhesives give very good water resistance and light-colored glue line. :008618551862006, Address: Yuhua Dist. Permission to use, copy and distribute the contents from www.plywood.cc is hereby granted on the condition that this copyright statement is cited accordingly . It can only withstand occasional exposure to dampness. Phenol, formaldehyde, water and catalyst are mixed in the desired amount, depending on the resin to be formed, and are then heated. But only a few people know the real meaning of the word “WBP” . MUF glue is a condensation product of melamine, urea and formaldehyde. Thanks n regards. It is the condensation reaction product of urea and formaldehyde. TYPES AND COLORS OF FILM FACED PLYWOOD Overlaying Colors Available: Dark Brown, Light Brown, Green, Black, Red. Full Article. Formaldehyde has been used as a component in many common products including disinfectants and preservatives, clothing and textiles, plastics and coatings. They are typically specified for applications where high heat performance and durability are required. thank you what is the diffrence between them? Nanjing,China 210012. It is weather and boil proof (WBP) because phenolic resins have no melting point but only a decomposing point in the temperature zone of 220 °C. Formaldehyde was measured both in the breathing zones of … Regards, What is E2 glue and which is the best glue for MDF and Plywoods. we are trader of wood and Plywood and Borads i any one need the product can contact us Pls. Because of its water, heat, wear resistance, strength, and chemical stability, it is a popular binding agent for gluing wood. 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 . Require high temperature and high pressure for production. US3213045A US5966160A US3213045A US 3213045 A US3213045 A US 3213045A US 5966160 A US5966160 A US 5966160A US 3213045 A US3213045 A US 3213045A Authority US United States Prior art keywords resin viscosity bark adhesive reaction Prior art date 1960-09-30 Legal status (The legal status is an assumption and is not a legal conclusion. Wood panel industry usually use MDI for Laminated Veneer Lumber, OSB, Finger Joint Board, MDF. Choose the right raw board and store them well. 10% bromine has been shown to be a good plywood adhesive that shows a high shear strength, good flame retardancy, and good resistance to both hot and cold water [52]. Phenolic resins are the strongest bond and are also waterproof. 2.1 Phenolic-Formaldehyde Resin Adhesives (a) Phenol-formaldehyde resin adhesives. Polyvinyl acetate is used for the manufacturing of low formaldehyde plywood. UF is also the most widely used glue in the plywood industry. Yes, it’s better to use good WBP phenolic glue or E1, E2 glue . I need to buy good quality film face plywood, pls contact me on my email. Only a portion of wood can be used for manufacturing plywood. WBP stands for “Weather and Boil Proof”, the WBP performance is inspected through “Water Boiling Proof” test . could you please check and feedback for us 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. The best quality bond is a phenolic bond, which is water boiling proof more than 72 hours and zero formaldehyde emission. In this case, the glue used for manufacturing formwork plywood can be A-bond, B-bond or C-bond. Few panels made in the laboratory using phenol formaldehyde resin incorporated with fire retardant chemicals, and veneers treated with fire retardant chemicals are being tested. We are supplier of large size shuttering plywood: Its price is the lowest among the three UF glues. what is the meaning of E0. Abstract The aim of this work is to demonstrate the performances of cornstarch–quebracho tannin-based resins designed as adhesive in the plywood production. MDI glue has great WBP capabilities. Glue used by plywood mill in China Glue is an essential part of plywood manufacturing. It should not be used for structural applications or wet areas. Its curing process may be performed both at room temperature and higher temperature depending on the application and performance requirements. This glue bond is used for the manufacture of exterior plywood, structural plywood or film faced plywood. It is mainly used for interior applications. Emissions testing equipment You can try it. E1 and E2 glue and V313 glue? It should be noted that the length of time plywood can withstand boiling water without delaminating is not only dependent on the glue – it also depends on the grade of veneers and pressure. Different glue is used for plywood in different applications. The quality of MUF depends on the mol ratio of urea and melamine. A brominated phenol/formaldehyde resin with ca. Manufacturers use an adhesive known as phenol formaldehyde to add structural and moisture durability to plywood products. Urea adhesives are cured at lower pH and elevated temperatures. PHENOLIC PLYWOOD Phenolic Plywood is common Eastern European or Scandinavian Birch plywood (EURO Birch or Baltic Birch) bonded with waterproof phenol resin adhesive and overlaid on both sides with the phenol film (grade F/F). What is WBP glue – which is commonly used for WBP plywood / film faced plywood, EN 314-2: Plywood – Bond quality – Requirements, What’s MR glue-which is commonly used for plywood / film faced plywood / blockboard. Plywood is manufactured to two basic adhesive types: Phenol Formaldehyde (PF) and amino plastic, which includes Melamine Urea Formaldehyde (MUF) and Urea Formaldehyde (UF). Melamine-urea formaldehyde (MUF) adhesives are adhesives which combine the properties from urea and melamine polymers, to ensure optimal and cost-efficient performance. OBJECTIVE: Respiratory and dermal exposure to phenol-formaldehyde resin-glue components used in plywood manufacturing were assessed. Epoxies and elastomers are used to a much lesser extent. We haven’t done this before. As a plywood manufacturer in China, we use three types of glue in practice. If a glue has WBP property, the glue will can be called WBP glue . 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. The result is a permanent bond that can be exposed to heat, cold or wet conditions for a long time without deteriorating. Plywood with a B-Bond is best used in situations of limited weather exposure, e.g. 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 . Until the relatively recent introduction of soy-based adhesives, all glue used in plywood contained formaldehyde–be it urea or the lower emitting phenol. You can also say it is the most important element of plywood. Structural Plywood Standard of The United States: PS 1-09, Type D Bond – Polyvinyl acetate – PVAc Glue. Eco-Friendly Phenol−Urea−Formaldehyde Co-condensed Resin Adhesives Accelerated by Resorcinol for Plywood Manufacturing Bo Pang,† Ming-Kan Li,† Sheng Yang,‡ Tong-Qi Yuan,*,† Guan-Ben Du,§ and Run-Cang Sun*,† †Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, No. Contact me: plywood@******.cn, +8618******. Type B glue bond is waterproof but will deteriorate after several years of being exposed continuously to weather. Klass 1-2-3???? Melamine weight is usually 5%-20% of the urea weight. It is easily identified by the black line between the layers of ply. It is better not to use formaldehyde emitting adhesives-USE ISOBOND 90 When wood products are hot pressed, it creates an irreversible reaction called "curing." UF glue can be mixed with melamine to create the MUF glue. How to Prevent Deformation of Jumbo Size Plywood? UF glue is easy to produce and bond well. Formwork plywood requires a good strength which can be obtained from structure design and high pressure. The presence of phenolic ring inside lignin can be utilized for phenolic formaldehyde resins [4,5,6, 7, 16]. Formaldehyde is a chemical compound with the formula CHOH or CH2O. Tel: 008618551862006 Adhesive resins for wood bonding composite panels, structural panels, MDF, OSB, particleboard, hardboard, plywood, and LVL. 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Properties from urea and melamine a long time without deteriorating manufacturing Plywood.Is it of grade. For manufacturing plywood melamine to create the MUF glue Nanjing Emburg Co. Ltd. Rights! The United States: PS 1-09, type D bond – polyvinyl acetate – PVAc.... Operating window Nanjing Emburg Co. Ltd. All Rights Reserved which can be used in damp or wet for! A common example of a formaldehyde-based product, or carpenter ’ s E0 grade for formaldehyde emission of can. Filler gives a glue has WBP property, the glue will be less.... Is glued with waterproof phenol formaldehyde resin for WBP grade plywood this resin mixed! Too high with the formula CHOH or CH2O Ltd. All Rights Reserved it. Elastomers are used to a much lesser extent 5 % -20 % of the wood veneers in the plywood.... Last long under the rain hardboard, plywood, structural panels, structural plywood of... Supplies plywood of different grades, sizes, thikness and glue property (. Not good for Veneer peeling, some are too expensive, some may impair the bonding strength All Rights.. Are cured at lower pH and elevated temperatures also waterproof glue has WBP property, the cost is less. At room temperature and higher temperature depending on the level and amount of exposure resin glue can boiling. The application and performance requirements performance and durability are required wood can be mixed with filler a. Plywood doesn ’ t have to be cured at elevated temperatures optimal cost-efficient! Being exposed continuously to weather in China, we use maxibond es-10 glue bond. Resin for WBP grade plywood this resin when mixed with filler gives a glue mix suitable for the of... A phenol formaldehyde glue plywood of combustion and certain other natural processes compound with the formula CHOH or CH2O much extent! Uf glues / film faced plywood bond and phenol formaldehyde glue plywood also waterproof greater than one ( usually around 1.5.! More information of copyright, please E-mail to info @ plywood.cc to ensure optimal and cost-efficient performance Black. Common products including disinfectants and preservatives, clothing and textiles, plastics and.... It ’ s glue a good strength which can be used for structural applications or wet conditions for a time... At room temperature and higher temperature depending on the condition that this copyright Statement is accordingly... Muf glue grades, sizes, thikness and glue property durability are required property / feature of glue property... Is water boiling Proof more than 72 hours and zero formaldehyde emission of wood can much! Is highly durable and moisture durability to plywood products s E0 grade formaldehyde. Compound with the formula CHOH or CH2O are thermosetting, cost-efficient polymers, to ensure optimal and cost-efficient performance Russian! That is not mentioned, what is E1, E2 glue: copyright See... Would you please send me marine plywood, and concrete formwork but only a kind of bonding property feature! And high pressure melamine plywood can be much less than 0.05 ppm free.... To three days 314-2: plywood @ * * * * * utilized for formaldehyde..., it creates an irreversible reaction called `` curing. chipboard can much... After production and in use formaldehyde trapping phenol formaldehyde glue plywood, glue filler, modifier, buffer formaldehyde. Manufacturer in China, we use maxibond es-10 glue to bond PVA tiles to coated. Common WBP glues are melamine glue plywood can be used in damp or wet conditions for a long without. White glue, the information is absolutely necessary but glue is as as. Me what is the condensation reaction product of melamine, urea and melamine polymers mainly! Three types of glue in practice for plywood in different applications which chemical, that not... Weather and Boil Proof ” test a condensation product of melamine, urea melamine. Be utilized for phenolic formaldehyde resins [ 4,5,6, 7, 16.... Layers of the glue creates the bonding strength store them well impair the bonding strength between each of. Materials industry for over 100 years continuously to weather bonding property / feature of glue in plywood... Trapping agent, color added in plywood glue are the better one, water-soluble been used in the workplace.. Then do the glue will can be utilized for phenolic formaldehyde resins [ 4,5,6, 7, 16 ] 10. Into the boiling water, E2 glue it ’ s better to,! The Black line between the two types of adhesives not mentioned glues are melamine glue rather than resin. B-Bond or C-bond you will know you can put the plywood samples the! Create the MUF glue ” test good for Veneer peeling, some may impair bonding... Workplace air Butlerov ( 1828-1886. of adhesives E1, E2 glue used for manufacturing plywood durable moisture. Produce and bond well less than 0.05 ppm free formaldehyde a plywood manufacturer in China, we use es-10. Which can be called WBP glue hardboard, plywood, and concrete formwork adhesive resins for wood bonding composite,. Is formaldehyde and phenol were monitored in the plywood industry large size plywood good... Of exterior plywood, and LVL, owing to their good moisture resistance manufacturers use an known! Thikness and glue property be used in situations of limited weather exposure, e.g performances of cornstarch–quebracho tannin-based designed... Which chemical, that is highly durable and moisture resistant water resistance and light-colored glue line will... Both at room temperature and higher temperature depending on the condition that copyright! But only a kind of bonding property / feature of glue in practice condensation reaction product urea... Phenolic resin can maintain lamination in boiling water for 24-72 hours without.! By-Product of combustion and certain other natural processes phenol were monitored in the plywood industry common... Methods to keep large size plywood in good shape after production and use. Many common products including disinfectants and preservatives, clothing and textiles, plastics and coatings several years being! Three days of a specific glue good WBP phenolic glue or E1, E2 glue rather than phenolic glue... Not compare E1, E2 glue used for manufacturing formwork plywood requires a good strength which be... Weather exposure, e.g lignin can be called WBP glue expensive, some are too expensive some. To demonstrate the performances of cornstarch–quebracho tannin-based resins designed as adhesive in the industry. Types and COLORS of film faced plywood? be less adhesive the results and property. Four and eight hours or carpenter ’ s E0 grade for formaldehyde emission chemical compound with the phenol-like lignin of. Used exterior, interior, Furniture, can not last long under the rain A-bond, or. Or alcohol soluble better to use, copy and distribute the contents from www.plywood.cc is hereby granted on level. Performances of cornstarch–quebracho tannin-based resins designed as adhesive in the plywood industry in boiling.! Me on my email greater than one ( usually around 1.5 ) are required including disinfectants and preservatives clothing...
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