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Starch Adhesives Additives Additives Carmel Resins.

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Presentation on theme: "Starch Adhesives Additives Additives Carmel Resins."— Presentation transcript:

1 Starch Adhesives Additives Additives Carmel Resins

2 Corrugated board is a construction whose strength depends on its "bonding points". The strength depends on: The bonding quality determines the final strength of the corrugated board.  Running speed  Glue penetration  Paper quality  Temperature  Glue formulation  Type of starch Carmel Resins

3 Carmel Resins Additives Our premium resin products for corrugated container industry has set quality standards since its introduction in All of our resins are the result of continuous development to meet our customers needs and the new environment regulations. Carmel Resins

4 Carmel Resins Additives All of our resins are listed by the FDA Regulation 21 CFR § and consequently can be safely used as a component of articles intended for use in packaging, transporting or holding food. All of our resins meet the updated legislation requirements of the EU and USA Carmel Resins

5 Water resistance additives Corrugator performance enhancers. Adhesive penetration enhancers. Rheological modifier and viscosity stabilizer Carmel Resins Additives Carmel Resins

6 Water Resistance Starch glue, even if prepared properly, is water soluble. Starch glue weakens in a humid environment. In water, the board loses its strength until a total separation occurs. Quick test: 1.4 minutes Carmel Resins

7 Water resistant corrugated board is required in a variety of industries: Water Resistance. Foods and beverages Frozen foods High humidity areas Tobacco Fruits and vegetables Flower packaging Outdoor storage Hi-Tech consumer products Carmel Resins

8 Water Resistance. The level of water resistance required from a corrugating adhesive varies depending upon the application. Quick test: 6.1 minutes MRA 1. M oisture R esistant A dhesive Used for the least demanding applications. WRA 2. W ater R esistant A dhesive Medium level of performance WpA 3. W ater p roof A dhesive Highest level of performance Carmel Resins

9 Mechanism of Water Resistance Water resistance is achieved by a cross linking reaction between the starch/cellulose and the resin, in which a grid of covalent bonds is formed. The grid is formed after gelatinization of the glue. This chemical bond is stable in water, and thus the glue acquires water resistant qualities. The reaction is dependent on temperature and PH. Carmel Resins

10 Mechanism of Water Resistance Dry Starch Adhesive is water soluble Resin is water soluble Dry Starch Adhesive + Resin (pH >11 + temp >120°C) Polymer which is insoluble in water Optimum results occur after a required stacking period of 4-24h. Carmel Resins

11 Starch and Cellulose are Isomers Carmel Resins

12 Proposed Mechanism Condensation reaction between Resin and Hydroxyl- containing polymers, like starch and cellulose: Polymer = α -1,4 Polyglucoside (starch - amylose or amylopectin) and β-1,4 Polyglucoside (cellulose) Carmel Resins

13 TestsTests Wet pin adhesive test (PAT) Carmel Resins

14 Wet box compression test (BCT) TestsTests Carmel Resins

15 TestsTests Quick test - testing of the water resistance of corrugated board. Soak a piece of cardboard in water at 50ºC. The results relate to the time needed for it to open by itself with just a touch of the hand. Opening periodResistance Evaluation up to 5 resistance 5-10 min.low resistance min.medium resistance over 30 min.very good resistance Quick test Carmel Resins

16 TestsTests The water resistance of the glue of corrugated fiberboard is measured by the length of time during which a predetermined combination of glue lines, immersed in water, resists the pull of a suspended weight in the plane vertical axis of the board, at a right angle to the glue lines. FEFCO No 9 FEFCO No 9 (European Fed. of Cardboard Manuf.) Carmel Resins

17 Green Bond and High Speed Side delamination issues arising on the corrugator is well known, in order to reduce this phenomena the decreasing of the corrugator’s speed is needed. The result is lower productivity and line efficiency, and higher costs. Enhanced adhesive performance Carmel Resins

18 Side delamination can be overcome by increasing the tackiness of the wet glue leading to better bonding which allows working at higher speeds. Thus productivity and line efficiency increases, and costs decrease. Green Bond and High Speed Carmel Resins

19 Enhanced Properties A group of resins specifically designed to produce early green tackiness. (CP-88/LV CP-88/LA, CP- 88/LV20D) These polymers are film formers and possess a high concentration of polar chemical groups which cling to the cellulose of the board by hydrogen and physical bonds. The strong bonds allow higher running speeds with less waste, and accelerate production. Carmel Resins

20 Enhanced adhesive penetration – CP-88/P This additive enables rapid migration of liquid starch adhesive into paper assisting the bonding of recycled liners, liners coated with synthetic polymers, preprinted liners and other difficult to penetrate substrates. Carmel Resins This additive Improves bond quality and corrugator speeds on all grades of paper including heavy weights, double wall and triple wall.

21 RHEOLOGICAL MODIFIRE AND VISCOSITY STABILIZER– CP-88/VS Affecting the adhesive film. Reduce adhesive consumption. Keeping adhesive viscosity stable for more than 24 hours without stirring or circulating. Carmel Resins

22 Types of Additives Liquid: Can be applied at the kitchen or at the line. Exists in different concentrations from 30-65% solids (CP-88, CPV 25 and CPAV 37). The high concentration resins ( LH5, LH6, LH8 ) are raw materials for different formulations. By appearance : Powder: Can be applied at the adhesive blending tank or blended with one bag mix – OBM ready to use starch adhesive (TP1) Carmel Resins

23 Additives Types water resistance Thermoseting Resins for water resistance: CP-88/I, CP-88/LI, CP- 88/LH 5, CP-88/LH6, CP-88/TP1. different levels of water resistance according to resin concentration. Curing time 4-24h By application : water resistance Poly-phenolic natural extract for water resistance: CP 88/T40 - Does not contain formaldehyde. Carmel Resins

24 Additives Types Enhanced adhesion and mechanical properties Enhanced adhesion and mechanical properties resins : CPAV 37, CPV 18, CPV-25, CP88-P - Do not contain formaldehyde. Carmel Resins increases tackiness of the glue to allow higher speeds for the corrugator.

25 Specific blends of proprietary resins: corrugators performance, water resistance, bond improvement and production speed enhancers- CP-88/LV, CP88/LA, CP-88/LV20D Can be adjusted for costumer requirements. Reduces curing time. Early or immediate converting. Increases green bond. Increases running speed. Blends withcombined properties Blends with combined properties Carmel Resins

26 CostCost Using Resins Save costs Carmel Resins Wet Tack Green bond Energy SAVE $ Wet Tack Running speed Productivity SAVE $ Penetration Adhesive Energy SAVE $ Stable Viscosity Adhesive Energy Scrap SAVE $ Dry strength BCT,ECT paper gramage SAVE $ Stable Viscosity wet BCT Humid store price SAVE $

27 CostCost Using resins in adhesives SAVES production costs Carmel Resins


29 Thank you for your time Thank you for your time Carmel Resins


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