Side seam adhesive

Three adhesives are used in paper bag manufacture side seam adhesives, bottom paste adhesives, and cross pastes. The side seam adhesive is used to form a cylinder from a flat sheet of paper. This adhesive must develop a strong bond quickly, so the tube can be cut for further operation. The viscosity should be about 3,000 cP. and solids about 25%. One formulation is water 68%, dextrin 28% heat to 160°F (71°C), add 3% borax, heat to 190°F (88° C), add 3% preservative. A water-resistant formulation is water 1700 pounds, white dextrin 700, soap 2, urea-formaldehyde 70, heat to 200°F (93°C), dilute with cold water to 260 gal volume, and add 14 pounds ammonium chloride. This formulation should be used immediately. Its pH is about 6. ... 

The side seam adhesive is presently undergoing some modification as new diaper configurations are being developed. More and more the... 

Water-based adhesives are applied as aqueous solutions, dispersions or emulsions and are used mainly in paper and board applications, for example, side-seaming of cartons. Typical examples of adhesives applied in this way... 

Cartons are usually supplied in a collapsed state, with a glued side seam and two of the folds already made. Folding/gluing is done at high speed and it is necessary for the adhesives used to have a high tack, since freshly folded creases are quite resilient. At this stage, crease quality is very important, since unduly stiff creases will resist gluing. 

Properties Wh. to off-wh. powd. m.w. 446 sp.gr. 1.14 m.p. 98-100 C Uses Antioxidant for poiyoiefins, nyions, styrenics, poiyether poiyois, poiyesters, PVC, PU, food-grade poiymers, rubbers, hot-meit adhesives, iubricant additives in food-pkg. adhesives in side seam cements for food-contact containers antioxidant for poiyester eiastomers used for food pkg. 

Uses Antioxidant for food-grade polymers, rubber, adhesives, pressure-sensitive adhesives, can-end and side-seam cements Regulatory FDA 21CFR 175,105,175.125,175.300,177.2600,178.2010 Manuf./Distrib. Ciba Spec. Chems./Addit. 

Uses Polymerization catalyst and vulcanizing agent crosslinking agent for olefinic polymers, polyester, and silicone rubber polymerization catalyst in side seam cements for food-contact containers in food-pkg. adhesives catalyst in food-contact crosslinked polyesters accelerator for food-contact rubber articles for repeated use Regulatory FDA 21CFR 175.105,175.300,177.2420,177.2600 ManuUDistrib. Akzo Nobel Aldrich Atofina Century Multech Dastech Inti Fluka Fiercules Monomer-Polymer Dajac Labs Pechiney Chems. Div. R.T. Vanderbilt SCI Int l. USA Southern Texas Chem. St. Lawrence T FI Chem. Witco Trade Names Containing Dynasylan Silfin 06... 

Uses Antimicrobial in cosmetics mildewcide, fungicide, preservative for adhesives, sealants, paints, and in lumber, construction, home improvement, textile, leather, and automotive industries antifungal preservative in food-pkg. adhesives preservative in side seam cements for food-contact containers antifungal preservative in food-contact sealants and caulking materials for repeated use Regulatory EDA21CFR 175.105,175.300,177.2600 Manuf/Distrib. ANGUS... 

Uses Plasticizer for PVC, PS, cellulosics, paints vehicle for pigment dispersions plasticizer for side seam cements for food-contact containers syn. lubricant basestock pharmaceutical pkg. in food-pkg. adhesives in closure-sealing gaskets for food containers plasticizer in food-contact rubber articles for repeated use in surf, lubricants for mfg. of food-contact metallic articles... 

Uses Plasticizer for cellulosics, resins, adhesives, coatings, inks, PS, PVAc, PVB, polyamide hot-melt adhesives, electroplating sol ns., thermoplastics and ermosets, nitrocellulose lacquers, shellac filmTormer in food-pkg. adhesives in side seam cements for food-contact containers... 

Properties M.w. 22,000-45,000 dens. 1.20 m.p. 283-319 C Toxicology Poison by inhalation tumorigen TSCA listed Uses Paints plastics textile fibers adhesives epoxy curing agent, hardener, emulsifier thixotrope in membranes for liq. separations for food processing in side seam cements for food-contact containers in cellophane for food pkg. 

Uses Modifier, adhesion promoter for resins in adhesives and coatings extender in polyamide resins film-former in cosmetics adjuvant for SAN copolymer food pkg. in cellophane for food pkg. in side seam cements for food-contact containers in paper/paperboard in contact with aq./fatty foods... 

Uses Fertilizer animal feed supplement stabilizer for resins, plastics, explosives softener for cellulose in paper industry deodorizer penetrant cure accelerator and activator airport runway deicing agent dispersant (animal glue, proteins) plasticizer for starch adhesives food additive, yeast nutrient, fermentation aid flour treatment agent diuretic, antiseptic in pharmaceuticals antistat, humectant in cosmetics keratin softenerfor dry skin prods. in ammoniated dentifrices in side seam cements for food-contact containers... 

Uses Antioxidant for food-grade polymers, rubber, adhesives, pressure-sensitive adhesives, can-end and side-seam cements... 

Uses Modifier, adhesion promoter for resins in adhesives and coatings extender in polyamide resins film-former in cosmetics adjuvant for SAN copolymer food pkg. in cellophane for food pkg. in side seam cements for food-contact containers in paper/paperboard in contact with aq./fatty foods Regulatory FDA 21CFR 175.105, 175.300, 176.170, 177.1040, 177.1200, 177.2260 Manuf./Distrib. Aarti Ind. Ltd http //www.aartlgroup.com] Akzo Nobel, http //www.akzonobel.com] Aldrich http //www.sigma-aldrich.com] Allchem Ind. http //WWW. allchem. com Trade Name Synonyms Ketjenflex MH T[Akzo Nobel http //www.akzonobel.com]] Ketjenflex MS-80 t[Akzo Nobel... 

Dimer acid-based hot melt adhesives with good adhesion to metal were used for adhering side seams in tin cans [72-75). Phenolic -OH group-containing polyester and a polyolefin were reacted to give graft copolymers useful as adhesives [76]. 

Hot melt adhesives used in diaper construction are of two general types high viscosity systems based on atactic polypropylene for the end seal and lower viscosity, faster setting ethylene-vinyl acetate based adhesives for the side seam. With the evolution of the construction to a multi-line laminating system, manufacturers have adopted one or the other hot melt system with which they feel most comfortable. The composition of an atactic polypropylene based hot melt adhesive is illustrated in Table 12. 

Seam adhesives are used in manufacturing the side, center, bottom and diagonal seams of the envelopes. Several different types are used including dextrin, resin, and dextrin/resin and starch/resin blends. The specific type used depends on the required adhesion level, application method and machine speed. As the envelope producing machine speed increases, dextrin and dextrin/resin are being replaced by starch/resin blends which are applied by roller, stencil or extrusion. 

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