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The difference between Glue and Gum When used as nouns , glue means a hard gelatin made by boiling bones and hides, used in solution as an adhesive, whereas gum means the flesh around the teeth. Glue as a noun : A hard gelatin made by boiling bones and hides, used in solution as an adhesive; or any sticky adhesive substance.
Examples: "I need to glue the chair-leg back into place. Examples: "His eyes were glued to the screen. Hot glue can be used on porous and non-porous surfaces. Because of its high viscosity, it can bond uneven surfaces together and is great at filling gaps. Hot glue is not typically used in high strength applications. And, it will not survive elevated temperatures near the application temperature.
However, it provides a very quick setting option for a variety of crafts and substrates. Hot tip: With hot glue, you can trace patterns to form bead designs on surfaces for texture and paint over it for a 3D surface effect. Hot glue is often used to add flower or ribbon embellishment on wreaths, headbands and picture frames where stiffness and strength is not such a concern. Pressure sensitive adhesives PSA :. PSAs are available in sheets and dots and can be used in a multitude of craft projects to include substrates such as lightweight paper, plastic, metal, and glass.
A spray adhesive is a contact adhesive based in a solvent that is applied by spray. When using spray adhesives, it is important that you apply in a well-ventilated room. After spraying your project, allow the solvent to completely evaporate before mating for immediate bond.
Once mated, you cannot reposition your substrates. Spray adhesives can be used with paper, foam board, fabrics, photo, and felt. Specialty contact adhesives are also available in a can to roll or brush on for larger, more demanding projects that involve wood, metal, and plastic sheet laminates.
Application example: Spray adhesives are an excellent choice for adhering photos or fabrics to a foam board back. Fabric adhesives can be liquid white glues like polyvinyl acetate PVA types. A variety of products cover lightweight to heavyweight fabric bonding, so it is important to get the correct product to match the hand or drape of your project. There is an expanded selection of nonwoven tapes and fusing adhesives in rolled good form, which range from highly flexible to stiff for fabric and leather projects and garment construction.
These can be found in sewing and fabric stores and can bond permanently without bleed through for a very durable craft. Epoxies are generally two part systems designed for high performance bonding. While epoxies can be formulated to suit many applications, they are generally very hard, durable adhesives that bond to many substrates successfully in more extreme environments.
Epoxy adhesives can exhibit a range of flexibility and clarity as well as cure speed. Polyurethane adhesives bond a variety of surfaces. They bond to textile fibers, metals, plastics, glass, sand, ceramics, rubber, and wood. Polyurethanes can work well on a wide variety of wood species, particularly on woods with high moisture content or on oily woods, where other glues are not as successful. Clamping is required until strength is built; a few hours.
Full strength is achieved in six to eight hours for a very strong and tough bond. Before completely cured, polyurethane adhesives can be removed using solvents such as mineral spirits or acetone. Dried glue can be sanded. Glue Sticks:.
Glue sticks are great for kids!
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