Liquid glues

Positive displacement Liquids only 20 (See Volume 1, Section 6.3.9) Hydrocarbon liquids, glues, food products (jams, chocolate, etc.) Suitable for high viscosity fluids. High accuracy and wide range... 

In the use of spraying blenders, the following technique can be successfully applied. All the paraformaldehyde powder hardener and 30% of the tannin adhesive spray-dried powder is removed from the liquid glue mix. The paraformaldehyde and wattle adhesive powder are then added to the wood chips just before the adhesive blender where the liquid glue mix is sprayed onto the wood particles. Core material MCs of 10 to 12% and face material MCs of 20 to 22% can then easily be achieved in spite of the high viscosity of tannin solutions. The percentage of paraformaldehyde used should be 14% based on wattle extract solids. The adhesive pH should be, in optimal cases, 6.5 to 6.7 for face material and 6.9 to 7.3 for core material. The percentage of resin solids on dry wood should be 11% for core material and 14 to 18% for face material. 

Light oib, tesU for, 27 Lignin, examination of, 19 Liquid glue, 107, 120... 

Gorilla Glue [Gorilla Glue], TM for liquid glue. 

The application of final closing pressure to the joint initiates the clamping or pressing period. During this period the glue s viscosity, with very few exceptions, must increase dramatically for the initially liquid glue to become rigid. 

Prodncts and Uses Applications include gummed tape, cartons, blueprint paper, and printing plates. A ton of skins yields about 50 gallons of liquid glue and adhesive. 

Cartons from corrugated board are most often sealed with liquid glues or hot-melt adhesives. However, dextrin adhesives are still used as a result of their low cost and ready availability. Adhesives for sealing cartons must have low and stable viscosity, be able to form strong bonds, and set up quickly. If staining of the carton is not a concern, sodium hydroxide may be added to increase adhesion. A formulation for a white dextrin adhesive is given in Table 5. 

In the manufacture of pure resorcinol resins the reaction would be violently exothermic unless controlled by the addition of alcohols. Because the alcohols perform other useful functions in the glue mix, they are left in the liquid glue. PRF adhesives are generally prepared firstly by reaction of phenol with formaldehyde to form a PF resol polymer that has been proved to be in the greatest percentage, and often completely, linear [4]. This can be represented as follows (Formula 2)... 

Duplicate three-ply laboratory plywood panels of 250 mm x 250 mm x 6 mm were prepared using 3 mm thick pine Pinus sylvestris) veneers. The liquid glue mix used on the veneers was 380 g/m double glueline. The plywood was pressed for 60 min after panel assembly. The press temperature was 155°C, pressure was 1 MPa, and the pressing time was 7 min. The samples were tested for tensile strength both dry and after immersion for 3 h in boiling water, i.e., wet tested. 

The liquid glue-mix spread used was 380 g/m d.g.l. (double glueline), press temperature was 130°C, and pressure was 15 kg/m for both types of panels. Press time was 5 min for the thicker panel type, this being rather short, and 4 min for the thinner one. These press times were chosen because industrial plywood panels are manufactured with press times calculated as 1 min/mm panel thickness to the flirthest glueline from the press hot platen + 2 min. The panels were tested for dry tensile strength according to European Norm EN 314 [25]. 

The raw materials used for the various types of starch- and dextrin-based adhesives are chiefly potato starch and cornstarch and, to a far lesser extent, tapioca starch and wheat starch. Potato starch is preferred for liquid glues, at least in Europe, where it is widely available. 

The tops and bottoms of corrugated boxes are closed with case sealing adhesive. Although liquid glues and hot melts are preferred, carton adhesives are used, sometimes with added caustic. Carton sealing involves bonding the bottom and top flaps of folded paper boxes. A... 

Four lacerations each, with a length of 3 cm, were made parallel to the spine to deep fascia. The lacerations were inoculated with S. aureus (ATCC 11632) and adjusted to a spectrophotometric absorbance of 0.138—0.139. Inocula were quantified at approximately 108 CFU/mL by standard microbiological methods. After inoculating the lacerations, the four wounds on each animal were approximated in one of four ways (1) with Nexaband Liquid (n-butyl-2-cyanoacrylate and D and C violet number six dye) (glue), (2) with subcutaneous suture (i.e., intradermal stitches buried beneath the skin) followed by application of Nexaband Liquid (glue/SQ), (3) with simple skin suture (suture), or (4) with intradermal subcutaneous suture followed by simple skin suture (suture/SQ). 

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