Adhesives. The tradesman s essential guide

Transcription

1 Adhesives The tradesman s essential guide

2 Adhesives The tradesman s essential guide Trade Essentials Adhesives Trade Essentials Adhesives are a range of high quality glues specifically designed for the trade to bond a wide array of decorative laminates, melamine board, wood and wood based panel products. The following product groups are available in the Trade Essentials Adhesives range: Contact Adhesives Thinners and Cleaners Construction Adhesives PVA s and Water Based Adhesives Each adhesive has been developed and selected to suit most applications required by cabinet makers, joiners, furniture manufacturers, post-formers and builders. This brochure, 'The tradesman s essential guide to Adhesives', contains specific product details. Material Safety Data Sheets are available from The Laminex Group on request. Trade Essentials Adhesives are manufactured specifically for The Laminex Group by one of Australia s largest and most experienced adhesive manufacturers. When you purchase Trade Essentials Adhesives you can be assured of the highest quality products, and technical support from The Laminex Group. Contact Adhesives Trade Essentials Contact Adhesives are solvent based products designed to provide superior bonds specifically for decorative high pressure laminates and other non-porous building products. 2

3 Sprayable Contact Adhesive Sprayable Contact Adhesive is a sprayable solvent based contact adhesive which offers a high strength heat-resistant bond that is resistant to water, many household chemicals and the effect of ageing. Allow surfaces to dry before bonding. This will take 5-10 minutes when cold spray equipment is used. A longer drying time may be necessary under high humidity conditions. When dry, the adhesive will feel tacky, but will not transfer to the finger when touched. Surfaces should be joined within 30 minutes after application. If the surfaces are not joined within this time, they can be re-activated by applying another coat of adhesive. It is designed for use in the furniture and building trade for bonding a wide range of surfaces such as fabric backed plastics, plywood, particleboard, MDF, wood veneer, plasterboard, laminated plastics, aluminium, mild steel, galvanised iron and polyurethane foam without the need for clamps or mechanical support. It is used in the manufacture of counter tops, table tops, desk tops, vanities, furniture, sandwich panels, doors, cabinets, partitions, wall panels and other laminated products. It is not suitable for bonding polystyrene, solid polypropylene, polyethylene, copper, copper alloys, exterior applications or load bearing joints. Typical Properties Sprayable Contact Adhesive - Red Sprayable Contact Adhesive - Clear Bonding Range Up to 30 mins. Heat Resistance 140 C (AS1937.4) Solids 17.5% approx. (sprayable grade) 300cps approx. (sprayable grade) Specific Gravity 0.86 Kg/Lt approx. Coverage 6-8m 2 per litre for total area. Surface preparation Surfaces must be clean, dry, free from oil and dust. Wipe metal surface with solvent to remove oil often found on metal. Application Sprayable Contact Adhesive can be applied using conventional air-spray equipment. Spray adhesive to both surfaces to be bonded. Apply adhesive to approximately 80% coverage over the entire area, half in a north-south spray pattern and half east-west. Apply additional adhesive to edges or areas that will be post-formed to achieve 100% coverage. A minimum of 276 Kpa (40PSI) bond pressure is suggested for best results. A pinch roller or rotary press is recommended. If not available, use a 75mm rubber hand roller and apply pressure from the centre toward edges to avoid air pockets and bubbles. Do not use so much pressure as to crush core materials. Caution Highly Flammable use in a ventilated area away from flame or sparks. Store in a cool, dry place. Note: The two most common causes of laminate to particleboard bond failure are: 1. Not enough pressure applied when bonding. 2. Adhesive coating too thin. Red Sprayable Contact Adhesive minimises operator error in this regard. Equipment and adhesive spills can be cleaned with Trade Essentials Adhesive Cleaner. Note: Solvent is not recommended for removing adhesive from vinyl or lacquered surfaces. Thinner Sprayable Contact Adhesive consistency has been carefully selected for optimum spray characteristics. Thinning is not recommended. If the adhesive has thickened beyond the point of easy application only thin to original consistency with Trade Essentials Contact Adhesive Thinner. Please read the Material Safety Data Sheet for this product before it is used. 3

4 Brushable Contact Adhesive Brushable Contact Adhesive is a general purpose polychloroprene based, brush-scraper grade contact adhesive used for bonding decorative laminates to plywood, particleboard, and medium density fibreboard. If possible, roll the surfaces together through a pinch roller or press with a rubber hand roller from the centre out to eliminate air pockets. Full bond strength will be achieved in about two days from bonding; however, about 90% of the bond strength will be obtained within 24 hours of bonding. Clean up Equipment or adhesive spills can be cleaned up with Trade Essentials Adhesive Cleaner. It is also used for bonding supported PVC, cork, leather, wood, metal and most types of rubber. This adhesive is not suitable for external use, waterproof bonds, bonding fibreglass to fibreglass, or for bonding materials to copper or its alloys. Note: Solvent is not recommended for removing adhesive from vinyl or lacquered surfaces. Thinner If thinning is required use Trade Essentials Contact Adhesive Thinner. Typical properties Heat Resistance Solids Specific Gravity Coverage: Yellow to amber 140 C (AS1937.4) 22.5% approx. 1500cps approx Kg/Lt approx. 4m 2 /Lt per surface Please read the Material Safety Data Sheet for this product before it is used. Surface preparation To obtain the best results, the surfaces to be bonded should be dry, clean, and free from dust, grit, oil, loose materials etc. Application Apply an even film of adhesive with a brush, or serrated scraper (provided with the adhesives) to both surfaces to be bonded, paying particular attention to the edges. Allow the coated surfaces to dry until slightly tacky, approximately 15 minutes at normal room temperature. A longer drying time may be necessary under high humidity conditions. Bring both surfaces together with a rolling action to avoid trapping air, ensuring that they are in the correct position at first application, as the surface will adhere immediately on contact. Apply hand pressure strength. 4

5 Gel Contact Adhesive Gel Contact Adhesive is a non-drip, non-stringy, polychoroprene based, scraper grade, contact adhesive. It bonds instantly when the two surfaces to be bonded are placed together with pressure. Apply pressure to the entire area using a 75mm (3 ) wide hand pressure roller, or apply very firm hand pressure working from the centre toward the edges to avoid air pockets or bubbles. Do not expose to high heat for three days after bonding. Clean up Equipment or adhesive spills can be cleaned up with Trade Essentials Adhesive Cleaner. Typical Properties Physical Form Solids Density Coverage Thixotropic paste. 25% approx Kg/Lt approx. Up to 3m 2 /Lt per surface Note: Solvent is not recommended for removing adhesive from vinyl or lacquered surfaces. Please read the Material Safety Data Sheet for this product before it is used. For bonding plastic laminates to wood, particleboard, hardboard without the need for pressing or clamping. Also ideal for bonding rubber, leather, wood furniture, glass, metal, china, lino, acoustic tiles, wallboard etc. This adhesive is not suitable for external use, for waterproof bonds, for bonding fibreglass to fibreglass, or for bonding materials to copper or its alloys. Surface preparation Surfaces must be clean, dry and free from oil, dust, and other foreign material. Apply with a notched scraper or stiff brush. Application Both bonding surfaces must be coated, and allowed to dry a minimum of minutes at 20 C or less at higher ambient temperatures. A longer drying time may be necessary under high humidity conditions. The surfaces should be joined within 45 minutes after application of the adhesive. Note: Align the surfaces to be bonded and bring together with light pressure. Surfaces will bond instantaneously when placed together. 5

6 Recommendations for application of contact adhesives Bond Failure The main symptoms and causes are: 6 Application methods The best method of applying contact adhesives is by: 1. Spray application. 2. Lambswool roller, then nip roller. 3. Brush or scraper, then pass through a nip roller. If no nip roller is available then apply pressure with a 75mm rubber roller with a long handle. This delivers an average of 1.75kg/cm 2, longer rubber rollers decrease the poundage delivered. Adhesive bonding hints DO NOT leave the lid off containers. DO NOT store containers on concrete floors. Store on wooden base to prevent cold concrete chilling. DO NOT store containers in the open as this could lead to adhesive solidifying. DO NOT smoke or have open flame near adhesive. DO NOT add foreign solvent to Trade Essentials Adhesives. For cleaning use Trade Essentials Adhesive Cleaner, and for thinning where necessary, use Trade Essentials Contact Adhesive Thinner. DO NOT apply adhesive at temperatures below 10 C unless adequate heating and drying facilities are installed. There is a definite loss of grab at low temperatures. DO NOT apply adhesive over painted surfaces. DO check for proper surface preparation. Wipe metal with cleaner before applying adhesive. Mill process oil is often found on metal. Mould release powders are often found on rubber and plastic castings. DO test adhesive on new or different components before going into production. DO apply two coats to rough end grain. DO apply enough adhesive and pressure to surfaces. 85% of failures are due to one or both of these factors. DO regularly check the condensation trap to ensure air lines are free of water. Symptom Edge lifting: Bubble in centre of laminate Shiny area over entire surface: Dull areas on substrate: Adhesive stringy when delaminating: Small circular unbonded areas: Possible Cause Insufficient adhesive. Bonding too soon. Insufficient pressure. Exposed to direct heat from the sun before 72 hrs. Bonding too soon, trapping solvent. Edges were bonded first, instead of bonding from the centre outwards. Insufficient adhesive or inconsistent spray pattern. Insufficient pressure. Coating too thin on highly absorbent surfaces. Insufficient drying time, therefore bonding too soon. Dry or contaminated areas.

7 If the temperature is high, you will experience shorter drying time. If the temperature is low you could experience blushing, unless you have taken all the proper precautions. During winter, bonding problems are more likely to occur due to blushing. Hand rolling Blushing is moisture condensing on freshly applied adhesive due to rapid solvent evaporation cooling the air below the dew point. In other words, a water film on top of the adhesive. If blushing occurs, it can be removed by applying heat or hot air. Approved hot air blowers are the best option, heating lamps in sufficient quantity, or industrial heaters may sometimes be used. Open radiators are dangerous and could cause fire. Blushing can be eliminated altogether by the installation of a hot spray unit. Roller (pressure) work from centre out to edges Proper spraying 1. Adjust the gun to give correct coverage of adhesive. i.e. Fluid control, air control, gun depression (trigger). 2. Spray at 90 to the substrate and hold gun mm from substrate while spraying. Do not forget to trigger the gun when you complete your pass. 3. Adhesive must be thoroughly dry before bonding. Do not exceed bonding range of adhesive. 4. Combine substrates and run through pinch roller immediately after combining. When bringing the two surfaces together work from the centre out to the edges/ends. This will remove any tension that can be in the laminate sheet. When hand rolling, work from the centre to the end also. Bring the two surfaces together Laminate surface Lengths of dowel Substrate 7

8 Spray application solutions Symptom Cause Action Adhesive coating splatters Too much fluid reaching tip. Reduce fluid pressure and flow. and is uneven. Atomisation pressure too low. Increase air pressure. Air cap clogged. Adhesive has become too thick. Clean with solvent or broom straw. Thin to original consistency only. Narrow fan. Improper choice of air cap. Choose correct air cap. Inadequate air pressure. Fluid pressure too low. Increase air pressure. Adjust pressure balance (air versus fluid). Too light spray pattern. Insufficient adhesive reaching gun. Increase fluid pressure. Atomisation pressure too high. Gun nozzle or caps are plugged. Spray gun moving too fast. Reduce air pressure. Clean with solvent or broom straw. Slow speed. Adhesive cobwebs Gun too far from work. Reduce distance between gun and work when sprayed. to 300mm. Atomisation pressure too high. Reduce air pressure. Adhesive film has lost its Conditions too cold. Raise area temperature to above 18 C. 'tack' or initial grab. Blushing. Use approved hot air blowers to remove moisture. An additional coat of adhesive may be required. Adhesive goes lumpy in Incompatible thinners Use only recommended thinners drum and solids separate used to thin adhesive. for the adhesive. from solvent you are using. Adhesive separating in drum, Material has phased or settled. Thoroughly stir and remix before using. with thinner solvent on top and thicker solids on bottom. 8

9 Contact Adhesive Thinner Contact Adhesive Thinner is a solvent blend designed for the thinning of multi-purpose neoprene based contact adhesives. Applications Thinning of sprayable Neoprene contact adhesive is not recommended; however, if the adhesive has thickened beyond the point of easy application, only thin to original consistency with Trade Essentials Contact Adhesive Thinner. DO NOT thin with any other commercial thinner. NOT suitable for use with adhesives for bonding Polystyrene foam, since attack of the foam will occur. Avoid contact with laquered or plastic surfaces. Please read the Material Safety Data Sheet for this product before it is used. Typical Properties Clear liquid Specific Gravity 0.78 Kg/Lt approx. Water thin Solids 0% 9

10 Adhesive Cleaner ABS Edge Strip Cleaner Adhesive Cleaner is a solvent which has been designed for the cleaning and removal of dried solvent based rubber adhesives (contact adhesives). As an Adhesive Cleaner it may be used for the cleaning of equipment and adhesive spillage. Applications Trade Essentials Adhesive Cleaner is not recommended for the thinning of Neoprene contact adhesives. It is not suitable for cleaning bonded Polystyrene foam, since attack of the foam will occur. Please read the Material Safety Data Sheet for this product before it is used. Typical Properties Clear liquid Specific Gravity 0.87 Kg/Lt approx. Water thin Solids 0% ABS Edge Strip Cleaner is an aliphatic solvent mixture which has been designed for the cleaning and removal of hot melt residues from the surface of ABS as well as melamine and PVC edging. Applications ABS Edge Strip Cleaner is not recommended for the thinning of Neoprene contact adhesives nor is it recommended for removal of dried solvent based rubber adhesives. Hot melt residues can be removed from the surface of ABS, PVC and Melamine Edging by rubbing with a soft cloth containing ABS Edge Strip Cleaner. Severe rubbing may result in gloss change to the surface so care must be exercised. ABS Edge Strip Cleaner will not damage melamine laminate surfaces. ABS Edge Strip Cleaner can also be used to remove hot melt residues from brushes, machines etc. Solvents are hazardous. Please read the Material Safety Data Sheet for the solvent before it is used. Typical Properties Clear liquid Specific Gravity 0.72 Kg/Lt approx. Water thin Solids 0% 10

11 Safety and handling of contacts and solvents Danger The storage and handling precautions listed below apply to all the previously mentioned adhesives and solvents. Storage recommendations Store in well sealed containers away from heat and any source of combustion or sparks. Storage area should be dry, well ventilated and kept at a maximum of 30 C and a minimum of 5 C. Refer to local, state and federal regulations for storage/ disposal. If temperature exceeds 30 C, cool container under cold running water for 30 minutes before opening. Stir before use. Freezing is to be avoided. Each product will remain suitable for its intended purpose for up to 12 months when stored in the original sealed container. Handling precautions 1. Material is highly flammable. Flash point of less than 0 C. Class 3 flammable liquid. 2. Do not smoke, have open flames, fire or electrical equipment near products while in use. Vapours are extremely flammable. 3. Use only in a well ventilated area. Avoid breathing the vapours and solvent contact with skin. Respiratory protection not required if ventilation adequate. Otherwise use half-face vapour filter. Protective gloves: Solvent resistant. Eye protection: Safety glass with side shield. 4. Harmful or fatal if swallowed. Keep out of reach of children. Do not induce vomiting if swallowed. Call a doctor immediately. 5. Keep container firmly closed when not in use. 6. In case of fire, foam, dry powder or carbon dioxide are preferred extinguishers. If liquid product is present, water jet may spread the flames. 7. Material Safety Data sheets for all listed adhesives are available on request. 11

12 Construction Adhesives Trade Essentials Construction Adhesives are solvent based mastic adhesives packaged in cartridge form and designed for use by the construction industry. Position wall panelling to be bonded and press together ensuring a transference of half the adhesive to back of panel. Pull the two surfaces apart and allow the adhesive to dry for 5-15 minutes depending on weather conditions. Wet Area Panelling Adhesive Wet Area Panelling Adhesive is a high strength, polychloroprene rubber based adhesive/sealant supplied in a ready to use cartridge. It cures to form a tough, flexible heat and moisture resistant bond. Applications Wet Area Panelling Adhesive is recommended for bonding a wide variety of materials including timber, tileboard, hardboard, gyprock, steel, aluminium and cement sheet etc. It is ideal for the installation of most wallboards and interior panelling products. Reposition the panelling and press the two surfaces together. Use a rubber mallet or a hammer and clean block of wood to ensure a complete bond. The joint will continue to gain strength for 2-3 days and maximum stress loading should not be applied until such time. Clean up Use Trade Essentials Adhesive Cleaner or Mineral Turpentine. Please refer to Wet Area Panelling Installation Guide for detailed instructions on this product. Please read the Material Safety Data Sheet for this product before it is used. It is not suitable for the bonding of polystyrene foam. Typical Properties Solids Specific Gravity Coverage Pale yellow 42% approx. 180, C approx Kg/Lt A 300ml cartridge will form 15 metres of a 5mm bead. Directions Surfaces to be bonded must be dry, clean and free from paint, oil, grease, dust, etc. Apply a 5mm bead of Wet Area Panelling Adhesive to each stud, batten or frame section to be covered. If fixing to a solid surface such as a brick or concrete wall, place dobs of adhesive spaced 150mm apart, 35mm in diameter and 4-5mm thick. 12

13 Particleboard Flooring Adhesive Particleboard Flooring Adhesive is a solvent based mastic adhesive/sealant developed for use in the construction industry. It cures to form a tough flexible moisture resistant bond. Clean up Use Trade Essentials Adhesive Cleaner or Mineral Turpentine. Please refer to the Particleboard Flooring Guide for detailed instructions on this product. Please read the Material Safety Data Sheet for this product before it is used. Applications Particleboard Flooring Adhesive is recommended for bonding a wide variety of materials including timber, tileboard, hardboard, steel, aluminium and cement sheet, etc. It is ideal for the installation of Particleboard Flooring and most other types of interior sub-flooring. Typical Properties Solids Specific Gravity Coverage Buff paste 76% approx. 95,000 CPS approx Kg/Lt A 300ml cartridge will form 15 metres of a 5mm bead. A 850ml cartridge will form 40 metres of a 5mm bead. Directions Surfaces to be bonded must be clean and free from paint, oil, grease, dust, etc. Ensure floor joists are flat and level. Apply adhesive in a 5-6mm bead over area to be covered by first sheet. Position sheet and nail firmly to joists. Fix each subsequent sheet in the same manner but also run a 3mm bead of adhesive along top of tongue before placing into groove of previous sheet. The joint will continue to gain strength for 2-3 days and maximum stress loading should not be applied until such time. 13

14 PVA s and water based adhesives Trade Essentials PVA s and water based adhesives are designed for use on a wide range of timber and wood based panel products and various applications. General Purpose PVA Trade Essentials General Purpose PVA is a high quality adhesive designed for most woodworking uses. It dries clear, is easily sanded, and is fast setting. Cured bonds will withstand a wide range of temperature and humidity conditions. Properties and applications Trade Essentials General Purpose PVA is a fast setting high bond strength grade PVA, suitable for bonding most soft and hard woods as well as particleboard and MDF. It is an excellent adhesive for dowel, mortice and tenon joints. It is suitable for general purpose bonding for joinery and assembly work, where good bond strength and short clamp times are desirable. Product Properties White liquid, dries clear Solids High (approx. 48%) ph 4-5 Medium (5,500 cps) Open Assembly Time 5 mins. maximum at 20 C Closed Assembly Time 10 mins. maximum at 20 C Excessive adhesive can be removed with a damp cloth while adhesive is still wet. For exterior applications, use Trade Essentials Cross Linking PVA. Coverage Trade Essentials General Purpose PVA Adhesive should be applied at a rate of 100 to 200 grams per square metre (5 to 10m 2 per litre), depending on the porosity of the substrate, application and ambient temperature. Clamp times (minimum) Temperature Low Density High Density Timbers Timbers 20 C 60 minutes 120 minutes 30 C 30 minutes 60 minutes When the minimum clamp time is used, the freshly bonded panels should be stacked for a minimum of 24 hours before machining. Storage Keep containers sealed and away from direct sunlight. Recommended storage temperature is 5-30 C. General Purpose PVA has a storage life of 12 months. Material Safety Data Sheet is available on request. Limitations General Purpose PVA should not be used when timber and ambient temperatures are below 10 C. General Purpose PVA is not suitable for load bearing applications or where a water resistant bond is required. Directions All surfaces to be bonded must be clean, dry and free from oil, grease, dust etc. General Purpose PVA Adhesive may be applied by squeeze bottle, trowel, roller coater, air activated glue gun or mechanical glue spreader. Bonds must be made while adhesive coating is wet. Where possible, assembled pieces should be clamped for a minimum of 30 minutes while adhesive sets. Light machining is possible after this time, however it is best to 14 allow 24 hours before subjecting bonds to any stress.

15 Craftwood PVA Adhesive A unique water based adhesive which has been specifically formulated to complement the high quality properties of Craftwood MDF. Craftwood PVA has fast 'wet tack', is quick drying and has excellent machining and sanding properties. The bonds formed are very strong, heat and moisture resistant and the glue line will accept the stains and lacquers recommended for Craftwood. Properties and applications Craftwood PVA Adhesive is used for the assembly and joining of Craftwood for furniture and cabinet making, and laminating Craftwood for turning and shaping. Product Properties Yellow liquid Solids High (approx. 48%) ph 3.3 Medium (4,500 cps) Open Assembly Time 5 mins. maximum at 20 C Closed Assembly Time 10 mins. maximum at 20 C Directions Craftwood PVA may be applied via brush, roller or squeeze bottle. It is also suitable for use on powered roll glue spreader and is suitable for use with hot or cold presses. All surfaces to be bonded must be clean, dry and free from dust, oil, grease etc. MDF moisture content should be between 8% and 12%. Ambient and panel temperatures should be above 10 C. Adhesive should be applied as a thin, even coating to one surface only. Parts should be combined, while the adhesive is wet, using good even pressure (30 to 130 psi is recommended) until the adhesive has set. Bonded parts should be clamped or pressed for at least 1 hour to allow the adhesive to set. Excessive adhesive can be removed with a damp cloth while adhesive is still wet. Allow to stand overnight for full bond development. Coverage Trade Essentials Craftwood PVA Adhesive should be applied at a rate of 100 to 200 grams per square metre (5 to 10m 2 per litre), depending on the porosity of the substrate, application and ambient temperature. Clamp times (minimum) Temperature Low Density High Density Timbers Timbers 20 C 60 minutes 120 minutes 30 C 30 minutes 60 minutes When the minimum clamp time is used, the freshly bonded panels should be stacked for a minimum of 24 hours before machining. Storage and handling Keep containers sealed and away from direct sunlight. Recommended storage temperature is 5-30 C. Craftwood PVA has a storage life of 6 months. Material Safety Data Sheet is available on request. Limitations Craftwood PVA should not be used when timber or ambient temperatures are below 10 C. Craftwood PVA is not suitable for load bearing applications. 15

16 Cross Linking PVA Cross Linking PVA Adhesive is a unique single pack PVA that provides superior bonding properties to normal PVA. It provides excellent bond strength, high heat and humidity resistance. Properties and applications Cross Linking PVA Adhesive is fast setting, develops high bond strength and heat and humidity resistance, without Catalyst addition, when dried at normal or elevated temperatures. The properties of Trade Essentials Cross Linking PVA are superior to normal PVA, and conform to BS EN Exposure Group D3. Applications for Cross Linking PVA include: Edge gluing timber. Solid timber veneer to core stock. Finger jointing. Panel to frame gluing. Product Properties White liquid, dries clear Solids High (approx. 48%) ph 3.3 Medium (4,500 cps) Open Assembly Time 5 mins. maximum at 20 C Closed Assembly Time 10 mins. maximum at 20 C Directions Cross Linking PVA Adhesive may be applied via brush, roller or squeeze bottle. It is also suitable for use on powered roll glue spreader or air assisted / airless spray equipment. Cross Linking PVA Adhesive is designed for use with hot press, radio frequency (RF) equipment, or standard cold press setups. All surfaces to be bonded must be clean, dry and free from dust, oil, grease etc. Timber moisture content should be between 8% and 12%. Ambient and panel temperatures should be above 10 C. Adhesive should be applied as a thin, even coating to one surface only. Parts should be combined, while the adhesive is wet, using good even pressure (30 to 130 psi is 16 recommended) until the adhesive has set. (See table opposite for adhesive cure times). Clamp time details are listed in table below. Excessive adhesive can be removed with a damp cloth while adhesive is still wet. Not suitable for below waterline applications or for continuous submersion. Adhesive Cure Times Hot Press Cure Rf Cure Coverage The rate of usage of Trade Essentials Cross Linking PVA Adhesive is governed by the type of application, substrate and ambient conditions. Coverage shall fall in the range of 75 to 150 grams per square metre (6 to 14m 2 per litre), for most applications. Clamp times (minimum) When the minimum clamp time is used, the freshly bonded panels should be stacked for a minimum of 24 hours before machining. For lamination of High Pressure Laminates to particleboard or MDF board using a hot press, the following settings have been found to be generally suitable: Storage Keep containers sealed and away from direct sunlight. Recommended storage temperature is 5-30 C. Cross Linking PVA has a shelf life of 6 months. Material Safety Data Sheets are available on request. Limitations Cross Linking PVA should not be used when timber or ambient temperatures are below 10 C. Cross Linking PVA is not suitable for load bearing applications. Typically C (depending on coating weight & substrate thickness) A LOW power setting is preferred to produce workable amperage without arcing. A minimal change after the initial amperage drop-off will indicate adhesive is sufficiently set. Cold Press C Temperature Low Density High Density Timbers Timbers 20 C 60 minutes 120 minutes 30 C 30 minutes 60 minutes Adhesive Coating Weight: 70-80gsm Press time: 2 minutes Temperature: 80 C Pressure: psi

17 Melamine Adhesive Melamine Adhesive is an emulsion adhesive for the bonding of synthetic laminated (non-porous) board to timber, particleboard, Craftwood and other porous surfaces. It is an excellent adhesive for a variety of laminates including DAP, melamine and vinyl coated board. Melamine Adhesive dries to a clear glue line. Properties and applications Melamine Adhesive is widely used in cabinet making for assembly of laminated board with traditional fittings such as dowels, cams, staples and screws. It is a versatile adhesive that will also bond a variety of porous materials such as timber, particleboard, MDF board and Craftwood to non-porous substrates such as rigid foam, melamine surfaces and cultured marble. Product Properties White liquid, dries clear Solids High (approx. 50%) 3,500 cps Open Assembly Time 5 mins. maximum at 20 C Closed Assembly Time 10 mins. maximum at 20 C Clamp Time 4 hours minimum With these joints it is also preferable to rub the bead of the glue into the end grain of the particleboard commonly known as a rub joint. In the dowel application, the glue should be run on the laminated surface and inserted into the dowel holes. Optimum bond strength is obtained after 24 hours assembly. Parts should be clamped overnight. Excessive adhesive can be removed with a damp cloth while adhesive is still wet. Storage Keep containers sealed and away from direct sunlight. Recommended storage temperature is 5-30 C. Melamine Adhesive is suitable for packing into tubes for ready-to-assemble furniture. Melamine Adhesive has a storage life of 12 months. Material Safety Data Sheet is available on request. Limitations Melamine Adhesive should not be used when timber or ambient temperatures are below 10 C. Melamine Adhesive is not suitable for load bearing applications. Melamine Adhesive is not recommended for bonding melamine to melamine. Directions Melamine Adhesive can be applied using a roller, spray, brush or squeeze bottle. Melamine Adhesive should be used as supplied. Dilution is not recommended. All surfaces to be bonded must be clean, dry and free from dust, oil, grease etc. Ambient and panel temperatures should be above 10 C. Adhesive should be applied as a thin, even coating to particleboard or MDF surface. Parts should be combined, while the adhesive is wet, using good even pressure (30 to 130 psi is recommended) until the adhesive has set. 17

18 Safety and usage of water based adhesives Storage recommendations Store in well sealed containers away from heat. Prevent from freezing. Observe shelf life conditions for the specific products. PVA and water based adhesives Materials are water based and non-hazardous. General ventilation is recommended during normal use. Wash any spillage from skin with water. If swallowed seek medical assistance. There are no known symptoms of ingestion. Keep containers closed when not in use. In case of fire use CO 2, dry chemical or water. Material Safety Data Sheets are available for all products listed. 7. Vary coverage rate to suit the porosity of the surface. 8. Do not apply adhesive at temperatures below 15 C, unless adequate heating facilities are installed. 9. Do not apply adhesive over painted surfaces. 10. As hardness / density of timber species increases, the adhesive selected should be the higher crosslinked type. Bond failure The most common causes of bond failure are: Shrinkage stress from high or variable moisture content of timber. Exceeding assembly time of glue in hot or dry weather. Poor preparation of the surfaces for gluing. Insufficient pressure on large assemblies particularly with hardwoods. Use of a glue that is inadequate for the application or substrate. General recommendations for water based adhesives Application can be by glue spreader, roller, squeeze bottle or brush. Keep measuring equipment clean and accurate. Adhesive bonding hints 1. Ensure moisture content of timber is under 14%, preferably 8-12%. 2. Timber surfaces should be machined for gluing on the same day. 3. Ensure surfaces for gluing are prepared with sharp well aligned cutters. 4. Assembly should be done within the specified assembly time, and glue squeeze out achieved on pressing. 5. Clamp pressure should be adequate for the assembly to get intimate contact of surfaces. Softwood PSI Hardwood PSI 6. Test adhesive on new or different components before going into production. 18

19 Substrates Applications Trade Essentials Adhesive Products & Selection Guide Assembly Flooring Wall Panels Edge Gluing Post Forming Laminating Rubber (3) Plastic (2) Masonry Cement Sheet Plaster Board Metals (1) Timber Melamine Wet Area Panelling High Pressure Laminate MDF Board Particleboard Contact Adhesives Brushable Contact Adhesive Sprayable Contact Adhesive Gel Contact Adhesive Cleaners & Solvents ABS Edge Strip Cleaner Contact Adhesive Thinner Adhesive Cleaner Construction Adhesives Wet Area Panelling Adhesive Particleboard Flooring Adhesive PVA Adhesives Cross-Linking PVA Adhesive General Purpose PVA Adhesive Craftwood PVA Adhesive Melamine Adhesive (1) Except copper and its alloys (2) Except polyethylene, polypropylene, teflon, etc. (3) Except silicone or fluropolymers 19

20 Trade Essentials Product Range Adhesives Craftform Craftwood Craftwood Mouldings Particleboard Particleboard Flooring Whiteboard Trade Essentials Adhesives are marketed and distributed in Australasia by The Laminex Group The information contained in this technical publication is intended to give a general indication of the characteristics of the material. While all possible care has been taken to ensure that the information is correct, the manufacturer cannot accept any liability, nor is any liability on the part of the manufacturer to be implied as a result of the data given. All measurements shown are in millimetres and nominal unless otherwise stated. The information contained in this publication supersedes all previous information and is subject to alteration without notice. For more information including product availability, visit For sales enquiries call any one of The Laminex Group Customer Service Centres: Laminex , Formex VIC/NSW , QLD (07) , WA (08) , NT (08) , SA (08) , Formica and are trade marks of Laminex Group Limited ABN Laminex Group Limited 10/02 advanz