4 4 increase curing speed
Increasing the solids content of the emulsion can accelerate curing. Japan has produced a VAE emulsion with a solid content of 65% to 75% (see JP 6-100751), a viscosity of <10000 mPas, and a fast drying speed, similar to solvent-based adhesives. The emulsion can bond polyolefin plastics, has good initial tack and final strength, can replace solvent-based adhesives, is beneficial to environmental protection, and has very promising prospects. In addition, mixing polyurethane emulsion can also increase the curing rate of VAE emulsion. Adding a small amount of anhydrous ethanol can accelerate the drying of the VAE emulsion.
4.5 Increase viscosity
Adding phthalates (such as DBP, DOP, etc.) and organic solvents (toluene, etc.) can increase the viscosity of the VAE emulsion. The amount of DBP added is preferably 100g VAE emulsion plus 10 ~ 15g. If a small amount of styrene-acrylic emulsion or triethanolamine is added to the VAE emulsion, the viscosity can be significantly increased.
4.6 Reduce costs
The addition of polyvinyl acetate emulsion, polyvinyl formal (10%), polyvinyl alcohol solution, light calcium carbonate, and ultra-fine talcum powder to VAE emulsions can reduce costs. For example, VAE emulsion (707) 50 (mass part), polyvinyl formal solution 50 parts, and oxalic acid 2 parts, the resulting modified VAE emulsion adhesive is strong on wood, paper products, fabrics, non-woven fabrics, etc. The adhesiveness, fast curing, good water resistance, stable storage, and low price.
4 Varieties and Applications of VAE Emulsion Adhesives
There are many types of VAE emulsion adhesives, such as PVC high-strength adhesives, multi-functional construction adhesives, non-woven adhesives, paper-plastic composite adhesives, puzzle adhesives, flooring adhesives, cigarette adhesives, carpet backing adhesives, wallpaper adhesives, aluminum foil adhesives. , paper tube glue, binding glue, label glue, flocking glue, leather glue, roof waterproof glue, pressure-sensitive adhesive, delayed adhesive, etc., in the construction, furniture, printing, textile, cigarette, packaging, paper products and other industries Successful application. Here are some specific varieties.
1) 888 multi-purpose construction adhesive is composed of VAE emulsion and other additives for the bonding of various microporous building materials. 2) 903 multi-purpose construction adhesive is made of VAE emulsion, compound tackifying resin and silicate inorganic adhesive. Used for the paste of tiles and mosaics. 3) CP-1 soft foam composite adhesive consists of VAE emulsion, acrylate-vinyl acetate emulsion and so on. It is used for composite bonding of polyurethane soft foam, polyester fabric and knitted fabric. 4) BST-7 water-based paper-plastic composite adhesive [11] The main components are 100 parts (VA) of VAE emulsion (707 or 705), 10 parts of modified rosin, 27 parts of organic phosphate ester (TBP), and Foam and so on. The performance is equivalent to the foreign product AROCOAT. It can be used as a solvent-based laminating adhesive for printing paper and BOPP composites. 5) J-148 PVC film-wood composite adhesive is composed of VAE emulsion, rosin resin, terpene resin, thickener and plasticizer (DBP). It is used for composite bonding of PVC wood grain film, plywood, particle board and other wood products. 6) The main components of the adhesive for PVC sheet and wood-based panel adhesive are VAE emulsion (706) 100 (mass part), 20 parts of rosin, 7 parts of auxiliary agent A (thickening), 0.5 part of PVA17-88, and 4 parts of stabilizer. 1 part of non-ionic surfactant. 7) The basic composition of TF-1 composite film adhesive is VAE emulsion, suitable for compounding polyolefin film with paper (PP or PE must be corona treated). 8) VAE series high-speed cigarette machine adhesive VAE emulsion (707) 55 (parts by mass), modified monomer 30 parts, mixed soap-free emulsifier 10 parts, DBP (DOP) 5 parts, additives (castor oil, phosphoric acid Tributyl ester, ethylene glycol, etc.) Appropriate amount, defoamer suitable amount, used as a high-speed cigarette machine on the mouth, nozzle, forming, packaging universal adhesive. 9) XK high-speed cigarette adhesive consists of VAE emulsion (705, 707), PVAc emulsion, PVA17-88, PVA17-99, compound modifier, emulsifier and plasticizer. For high-speed cigarette machine (6000 ~ 8000 min-1) nozzle. 10) Plastic-bonded fabric-paper adhesive consists of 50 to 60 parts by mass of VAE emulsion, 20 to 25 parts of tackifier (rosin), 10 to 10 parts of DBP, 20 to 25 parts of polyvinyl formal solution, and water. 20 to 25 copies. It is used to make composite packaging bags by composite bonding of woven net cloth and kraft paper. 11) Tile adhesive VAE emulsion 70 (parts by mass), 200 parts of sulfate cement, 200 parts of Portland cement, 20 parts of expandable cement, 400 parts of fine sand, 180 parts of activated clay, 230 parts of water, and the bonded tiles are firm and durable. 12) Concrete repair adhesive VAE emulsion 56 (mass), cement 285, fine sand 840, coarse sand 1030, water 137. 13) A component of two-component water-resistant adhesive: 50 parts of VAE emulsion (705 or 707) (parts by mass) and 10 parts of ultra-fine light calcium carbonate. Component B: TDI20 (parts by mass), toluene (anhydrous) 100 parts. mA:mB=10:1 for bonding wood products, fast curing, good water resistance. 14) Fast-fixing single-component adhesive consists of 100 parts (by weight) of VAE emulsion, 20 parts of aromatic oligomers, and 3 parts of polyether thickener. The solid content is 66% and the viscosity is 100 Pas. Used for bonding glass fiber decorative sheets and plasterboards. 15) Adhesive for building decoration (CN1113512A) made of VAE emulsion, toluene, rosin, DBP, sodium polyacrylate, talcum powder, water, etc. High bonding strength to PVC materials, peel strength 3 2kNm-1, but also bonding concrete, plaster, tiles and so on. 16) Polyolefin Water Emulsion Adhesive (JP98121014) The main component is 100 parts by weight of VAE emulsion (Sumikaflex 401), 3 parts by N resin (Epomin P1000), and 30 parts by Rosin Ester (Superester E730-55). Apply it to paper. When pressed with a PP film, the peel strength was 0.2 kNm-1.
Increasing the solids content of the emulsion can accelerate curing. Japan has produced a VAE emulsion with a solid content of 65% to 75% (see JP 6-100751), a viscosity of <10000 mPas, and a fast drying speed, similar to solvent-based adhesives. The emulsion can bond polyolefin plastics, has good initial tack and final strength, can replace solvent-based adhesives, is beneficial to environmental protection, and has very promising prospects. In addition, mixing polyurethane emulsion can also increase the curing rate of VAE emulsion. Adding a small amount of anhydrous ethanol can accelerate the drying of the VAE emulsion.
4.5 Increase viscosity
Adding phthalates (such as DBP, DOP, etc.) and organic solvents (toluene, etc.) can increase the viscosity of the VAE emulsion. The amount of DBP added is preferably 100g VAE emulsion plus 10 ~ 15g. If a small amount of styrene-acrylic emulsion or triethanolamine is added to the VAE emulsion, the viscosity can be significantly increased.
4.6 Reduce costs
The addition of polyvinyl acetate emulsion, polyvinyl formal (10%), polyvinyl alcohol solution, light calcium carbonate, and ultra-fine talcum powder to VAE emulsions can reduce costs. For example, VAE emulsion (707) 50 (mass part), polyvinyl formal solution 50 parts, and oxalic acid 2 parts, the resulting modified VAE emulsion adhesive is strong on wood, paper products, fabrics, non-woven fabrics, etc. The adhesiveness, fast curing, good water resistance, stable storage, and low price.
4 Varieties and Applications of VAE Emulsion Adhesives
There are many types of VAE emulsion adhesives, such as PVC high-strength adhesives, multi-functional construction adhesives, non-woven adhesives, paper-plastic composite adhesives, puzzle adhesives, flooring adhesives, cigarette adhesives, carpet backing adhesives, wallpaper adhesives, aluminum foil adhesives. , paper tube glue, binding glue, label glue, flocking glue, leather glue, roof waterproof glue, pressure-sensitive adhesive, delayed adhesive, etc., in the construction, furniture, printing, textile, cigarette, packaging, paper products and other industries Successful application. Here are some specific varieties.
1) 888 multi-purpose construction adhesive is composed of VAE emulsion and other additives for the bonding of various microporous building materials. 2) 903 multi-purpose construction adhesive is made of VAE emulsion, compound tackifying resin and silicate inorganic adhesive. Used for the paste of tiles and mosaics. 3) CP-1 soft foam composite adhesive consists of VAE emulsion, acrylate-vinyl acetate emulsion and so on. It is used for composite bonding of polyurethane soft foam, polyester fabric and knitted fabric. 4) BST-7 water-based paper-plastic composite adhesive [11] The main components are 100 parts (VA) of VAE emulsion (707 or 705), 10 parts of modified rosin, 27 parts of organic phosphate ester (TBP), and Foam and so on. The performance is equivalent to the foreign product AROCOAT. It can be used as a solvent-based laminating adhesive for printing paper and BOPP composites. 5) J-148 PVC film-wood composite adhesive is composed of VAE emulsion, rosin resin, terpene resin, thickener and plasticizer (DBP). It is used for composite bonding of PVC wood grain film, plywood, particle board and other wood products. 6) The main components of the adhesive for PVC sheet and wood-based panel adhesive are VAE emulsion (706) 100 (mass part), 20 parts of rosin, 7 parts of auxiliary agent A (thickening), 0.5 part of PVA17-88, and 4 parts of stabilizer. 1 part of non-ionic surfactant. 7) The basic composition of TF-1 composite film adhesive is VAE emulsion, suitable for compounding polyolefin film with paper (PP or PE must be corona treated). 8) VAE series high-speed cigarette machine adhesive VAE emulsion (707) 55 (parts by mass), modified monomer 30 parts, mixed soap-free emulsifier 10 parts, DBP (DOP) 5 parts, additives (castor oil, phosphoric acid Tributyl ester, ethylene glycol, etc.) Appropriate amount, defoamer suitable amount, used as a high-speed cigarette machine on the mouth, nozzle, forming, packaging universal adhesive. 9) XK high-speed cigarette adhesive consists of VAE emulsion (705, 707), PVAc emulsion, PVA17-88, PVA17-99, compound modifier, emulsifier and plasticizer. For high-speed cigarette machine (6000 ~ 8000 min-1) nozzle. 10) Plastic-bonded fabric-paper adhesive consists of 50 to 60 parts by mass of VAE emulsion, 20 to 25 parts of tackifier (rosin), 10 to 10 parts of DBP, 20 to 25 parts of polyvinyl formal solution, and water. 20 to 25 copies. It is used to make composite packaging bags by composite bonding of woven net cloth and kraft paper. 11) Tile adhesive VAE emulsion 70 (parts by mass), 200 parts of sulfate cement, 200 parts of Portland cement, 20 parts of expandable cement, 400 parts of fine sand, 180 parts of activated clay, 230 parts of water, and the bonded tiles are firm and durable. 12) Concrete repair adhesive VAE emulsion 56 (mass), cement 285, fine sand 840, coarse sand 1030, water 137. 13) A component of two-component water-resistant adhesive: 50 parts of VAE emulsion (705 or 707) (parts by mass) and 10 parts of ultra-fine light calcium carbonate. Component B: TDI20 (parts by mass), toluene (anhydrous) 100 parts. mA:mB=10:1 for bonding wood products, fast curing, good water resistance. 14) Fast-fixing single-component adhesive consists of 100 parts (by weight) of VAE emulsion, 20 parts of aromatic oligomers, and 3 parts of polyether thickener. The solid content is 66% and the viscosity is 100 Pas. Used for bonding glass fiber decorative sheets and plasterboards. 15) Adhesive for building decoration (CN1113512A) made of VAE emulsion, toluene, rosin, DBP, sodium polyacrylate, talcum powder, water, etc. High bonding strength to PVC materials, peel strength 3 2kNm-1, but also bonding concrete, plaster, tiles and so on. 16) Polyolefin Water Emulsion Adhesive (JP98121014) The main component is 100 parts by weight of VAE emulsion (Sumikaflex 401), 3 parts by N resin (Epomin P1000), and 30 parts by Rosin Ester (Superester E730-55). Apply it to paper. When pressed with a PP film, the peel strength was 0.2 kNm-1.
Source: 21st Century Fine Chemicals Network
Single-sided vegetable and fruit shelves were done independently by our company's designers. Our main design is that the fruit and vegetable display racks are easy to install and disassemble. According to different scenarios, we have designed different types of fruit racks. According to the size of the field, fruit and vegetable stands have double side, also have single-sided. According to the height of the room, the Fruit Display stand is designed to adjust the height.
Advantages
1. All steel integrated welding, the shelf is more stable, to ensure that the goods will not be scattered, while avoiding the damage caused by operational errors.
2. Increased use of high quality cold rolled steel materials
3. Clearly display product information, attract buyers' desire to shop, and greatly increase store purchase rate.
4. The overall grinding is more stylish and beautiful, and the grippers are skid-proof and wear-resistant. They are firm and durable.
Single-Sided Vegetable & Fruit Shelves
Vegetable & Fruit Shelves,Fruit Display Stand,Single Sided Vegetable Shelves,Single Sided Fruit Shelves
Jinan Dark Intelligent Facilities Co.,Ltd , http://www.cndarkcvs.com