Thermal Laminating

Plastics, Manufacturing Thermal Laminating Films Printable Plastics ID Card Materials Bio Plastics Adhesives... 

Use Food packaging, sporting goods, wire and cable, building construction and automotive. More recent uses are extrusion laminations, in extrusion coatings, and as adhesive films and webs for thermal laminating and other new uses not related to packaging. 

While glass, silicon, or quartz channels are often thermally bonded at high temperatures (550-650°C), the PT channels are bonded by a thermal lamination step in a standard office laminator. The lamination should be carried out at temperature high enough to provide a desired seal between... 

Apart from their use as tie layers in coextension, the modified polymers can find other adhesive applications such as improving adhesion of extrusion coatings, thermal lamination interplies, and as dispersions or powder coatings. As coatings, the modified polymers applied to metal surfaces can act as an adhesive layer to bond plastic components. A particularly useful version is to prepare a coextended film of a non-modified base polymer such as polyethylene or polypropylene, forming the bnlk of the structure, and apply a thin layer of the modified polymer to one or both external surfaces. This steucture may now be used to thermally bond to a metal substrate. 

Activated carbon powder is dispersed in a plasticized copolymer matrix solution which is then dried to form membrane. Examples of copolymers are poly(vinylidene fluoride-co-hexafluoropropylene) and poly(vinylidene fluoride-co-chlorotrifluoroethylene. The composite is thermally laminated to aluminum current collector as electrode. 

FRR is proportional to the membrane thickness (Liu et al. 2005). The chemical degradation rate of an Nafion 111 membrane is compared with that for a lO-mm-thick membrane fabricated by thermally laminating ten Nil 1 membranes together. For a given concentration H O, the FRR is higher for the thicker manbrane simply owing to the fact that there is more material to react with the H O. ... 

Changing laminates also affects drilling processes. Higher thermal laminates require variations in drill feed and speed rates. Some have different chip-load requirements, others need different bit geometry. Meanwhile, lower drill-hit counts may be required to maintain quality. Changes in hit counts and feed rates could also increase processing time. 

As a tme thermoplastic, FEP copolymer can be melt-processed by extmsion and compression, injection, and blow molding. Films can be heat-bonded and sealed, vacuum-formed, and laminated to various substrates. Chemical inertness and corrosion resistance make FEP highly suitable for chemical services its dielectric and insulating properties favor it for electrical and electronic service and its low frictional properties, mechanical toughness, thermal stabiUty, and nonstick quaUty make it highly suitable for bearings and seals, high temperature components, and nonstick surfaces. 

Phenol—formaldehyde resins are used as mol ding compounds (see Phenolic resins). Their thermal and electrical properties allow use in electrical, automotive, and kitchen parts. Other uses for phenol—formaldehyde resins include phenoHc foam insulation, foundry mold binders, decorative and industrial laminates, and binders for insulating materials. 

Unsaturated resias based on 1,4-cyclohexanedimethanol are useful ia gel coats and ia laminating and molding resias where advantage is taken of the properties of very low water absorption and resistance to boiling water (6). Thermal stabiHty is imparted to molding resias, both thermoplastic (71,72) and thermoset (73—76), enabling retention of physical and electrical properties at elevated temperatures (77). Additionally, resistance to chemical and environmental exposure is characteristic of products made from these resias (78). 

PBI is being marketed as a replacement for asbestos and as a high temperature filtration fabric with exceUent textile apparel properties. The synthesis of whoUy aromatic polybenzimidazoles with improved thermal stabUities was reported in 1961 (12). The Non-MetaUic Materials and Manufacturing Technology Division of the U.S. Air Force Materials Laboratory, Wright-Patterson Air Force Base, awarded a contract to the Narmco Research and Development Division of the Whittaker Corp. for development of these materials into high temperature adhesives and laminates. 

Aesthetic properties are of greatest concern in decorative laminates. These include gloss, appearance, cleanabiUty, wear resistance, stain resistance, and other surface properties. Physical properties are of most importance for industrial laminates. These include strength, electrical and thermal properties, expansion coefficient, and punchabiUty. The definitions of the laminate grades in these standards foUow. 

Ziac foil coated with a conductive, pressure-sensitive adhesive is used for repair of other ziac coatings or for imparting corrosion resistance at field sites. The 0.08-mm ziac tape or sheet has a 0.025-mm coaductive adhesive. The laminate is cut to size and pressed tightly to activate the adhesive. Conductive tape can be wrapped around pipe, especially around welds or connections. The corrosion resistance of this material is iatermediate between galvanized or thermally sprayed coatings and zinc-filled paints (21,50). 

Copper is universally used as the metal plating for tape because it can be easily laminated with copper and the various plastic tapes. Copper is readily etched and has excellent electrical and thermal conductivity in both electrodeposited and roUed-annealed form. The tape metal plating is normally gold- or tin-plated to ensure good bondabiUty during inner- and outer-lead bonding operations and to provide better shelf life and corrosion resistance. 

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