Adhesives in the textile industry

Thermoplastics A number of thermoplastics have been used as adhesives. Polyamides and copolymers of ethylene and vinyl acetate (EVA) are used as melt adhesives. Copolymers of methyl methacrylate and other monomers are used as adhesives in the textile industry. PVAc is often used in school glues. 

Adhesives for textile fibre bonding are discussed elsewhere a more general article considers Adhesives in the textile industry. 

The water resistance of the dry adhesive film obtained from emulsion adhesives, while fair, tends to be adversely affected by the presence of small residual quantities of protective colloids that are water soluble. They are used as Adhesives in the textile industry and for bookbinding and woodworking (Wood adhesives - basics). 

In addition, the structure of the uncured materials can be selected to fit a variety of industrial application processes. Thus, they are used in Aerospace applications, Automotive applications, as Adhesives in the textile industry and in building, electronic, healthcare, energy, medical, paper and personal care industries (see Adhesion in medicine). 

Uses of aqueous-based adhesives Because of the need to remove water, most applications for aqueous adhesives are made with materials that are able to allow transmission of water vapour hence, the major uses are with paper, wood and fabric (see Adhesives in the textile industry), either as binders or laminating adhesives. A list of applications would include the following remoistenable gummed tape, tube winding, box manufacture, plywood manufacture, reconstituted wood products, abrasives and woodworking. 

Adhesives in the textile industry A J G SAGAR Applications and adhesive types... 

Prepared generally by ester interchange from polyvinylacelate (ethanoate) using methanol and base also formed by hydrolysis of the acetate by NaOH and water. The properties of the poly(vinyl alcohol) depend upon the structure of the original polyvinyl acetate. Forms copolymers. Used as a size in the textile industry, in aqueous adhesives, in the production of polyvinyl acetates (e.g. butynal) for safety glasses. U.S. production 1980... 

Casein is used for a number of miscellaneous purposes in which foimolisation is not required. These include adhesives, stabilisers for rubber latex, paper finishing agents and miscellaneous uses in the textile industry. Mention may also be made of casein fibres, available in Italy between the two world wars under the name of Lanital. 

Salts of alkyl phosphates and types of other surfactants used as emulsifiers and dispersing agents in polymer dispersions are discussed with respect to the preparation of polymer dispersions for use in the manufactoring and finishing of textiles. Seven examples are presented to demonstrate the significance of surfactants on the properties, e.g., sedimentation, wetting behavior, hydrophilic characteristics, foaming behavior, metal adhesion, and viscosity, of polymer dispersions used in the textile industry [239]. 

The esters formed in this process are hydrolysed in both acid and base conditions and are much less stable than alcohol ethoxylates. This limits the applications in detergents but they have many industrial uses. In the textile industry they have good emulsifying, lubricating, dispersive and antistatic properties. They are also used widely in personal care, institutional and industrial cleaning, crop protection, paints and coatings and adhesives. 

In the past casein plastics were widely used for decorative purposes due to its pleasant appearance. It was also used in the button industry as well as for making buckles, slides, hairpins, knitting pin pens and pencils. These include adhesives, stabilizers for rubber latex, paper finishing agents, and miscellaneous uses in the textile industry. 

The dried excretion product of diseased acacias is called gum arabic. Healthy trees do not exude any resin. The main chain of the polysaccharides in gum arabic consists essentially of (1 — 3)-bonded D-galactopyranose units. One or two of the repeating units are substituted in the C-6 position by various side groups. Gum arabic is used mainly as a thickener in foods, but is also used in pharmaceuticals, cosmetics, in the textile industry, and in the manufacture of adhesives and inks. 

---