Substrate coated plastic

A wide range of substrates can be bonded. The inherent tackiness of natural rubber enables it to coat most non-polar substrates (mainly plastics and rubbers). 

Sprayed, vacuum-deposited and plated coatings can be applied to most metals and to many non-metals, e.g. vacuum deposition is applied to many substrates including plastics spray application can be used for coating fabric, plastic and paper. Hot dipping and other diffusion processes are dependent on the nature of the substrate for the properties of the coating. Most commercial applications of aluminium coatings are on iron and steel with smaller quantities applied to aluminium alloys and plastics. 

Coating plastics, metals, etc. steps generally involve surface preparation, preheating substrate, powder applications, and post-heating. 

Electrodeposition has been attempted also on flexible substrates within the scope of fabricating flexible solar cells. Huang et al. [177] investigated the electrodeposition of CIS on Au-coated plastic substrate from aqueous acidic (pH 1.65) solutions of millimolar CuCh, InCb, Se02, containing triethanolamine and sodium citrate. Stoichiometric, semiconductive CIS films (Eg = 1.18 eV) were obtained after annealing at 150 °C in nitrogen. 

For this reason much attention is being applied to surface science and to the interaction of coating materials with intended substrates. Some plastics— particularly polyethylene, polypropylene—and the silicone rubbers, cannot be covered with high-performance coatings without their surfaces being pretreated. 

For extrusion coating, the substrate—paper, plastic, or metal foil—is preheated, and may... 

Coated substrates involve different materials such as coated credit cards, paper, woven and nonwoven textiles, plastic or aluminum films and sheets, and roll coverings. Calender lines can process one coated side, both sides, or laminated (multiple substrates coated between each substrate). Calender with three rolls is usually sufficient for one-sided coating. However four rolls are used for extremely thin coatings. The 4-roll calender can be used for double-sided coating that is applied simultaneously on both sides. Specialized calendering equipment is used for certain products such as credit cards, floor tiles, and window curtains. 

ICP thin films were used as driving electrodes for polymer-Dispersed Liquid-Crystals (PDLC) display devices. Liquid-crystalline-based display devices, which are commonly made of a liquid-crystal compound sandwiched between two substrates coated with a conducting layer of indium tin oxide (ITO), whose substitution with ICP electrodes could improve the optical and mechanical properties of the display devices. On the way to all-organic displays, PDLC sandwiched between two plastic substrates coated with ICP layers are promising devices for paper-like displays for electronic books which require flexibility, lightness, and low-power consumption. The electro-optical characteristics (transmission properties, drive voltages and switching times) of the PDLC devices depend on the nature of the ICP substrate used [13]. 

Since plasticizers are typically incorporated into film coating formulations in significant concentrations, their inclusion commonly affects the permeability of polymer films and consequently drug release from coated substrates. Therefore, plasticizer selection for film coating applications mu.st be carefully considered as plasticizers substantially... 

Scherwsky et al. (1989) first utilized a SSFLC display in terms of the ferroelectric liquid crystalline polymer. The polymer SSFLC display is fabricated on the ITO-coated plastic substrate. The display was 15 x 40 cm2 in area and had 100 x 300 pixels (Lagerwell, 1993). The display doesn t need the orientation layer which is essential in the conventional liquid crystal displays in order to anchor the liquid crystal molecules. By lightly bending the... 

FIGURE 5.5.14 Optical micrographs of gold patterns printed by nTP. (a) 100-nm holes printed with a GaAs hard stamp on a plastic substrate coated with PDMS gold patterns printed with a PDMS stamp on (b) a PDMS substrate (c) a silicon/silicon dioxide substrate and (d) an ITO-coated plastic substrate. (From Y.-L. Loo, et al., J. Vac. Set TechnoL, B, 20, 2853, 2002.)... 

Figure 5.5.18 illustrates the ScL procedure used by Loo and coworkers to fabricate laminated pentacene TFTs. The top substrate, containing the [tCP-printed source and drain electrodes, was constructed on a PDMS-coated plastic substrate [89]. The bottom substrate was constructed on an ITO-coated plastic substrate. The ITO, patterned photo lithographically to define the gate level, was coated with an organosilesquioxane spin-on glass, which comprises the dielectric. Pentacene [44]... 

FIGURE 5.5.18 Schematic of soft-contact lamination, (a) Uniform layers of Ti ( 1 nm) and An (15-20 nm) are deposited onto a PDMS-coated plastic substrate, (b) Gold source and drain electrodes and interconnects are defined by microcontact printing, (c) This sheet is laminated against a bottom plastic substrate that contains the gate, dielectric and, semiconductor levels, (d) The completed laminated circuit. Insets magnified view of the laminated circuit and the side profile of a laminated electrode. (From Y.-L. Loo et al., Proc. Natl. Acad. Sci. U.S.A., 99, 10252, 2002.)... 

It is necessary to thermally cure the coated plastic in order to achieve full crosslinking of the air dried film. The degree of crosslinking affects not only the abrasion resistance of coating, but also the adhesion and the long term performance under environmental conditions. The temperature and time of cure is also dictated by the thermal stability and properties of the plastic substrate. The following table lists recommended cures for various plastics. 

Radiation-Curable Polyester Coatings. Radiation-curable polyester paints (see also Section 3.7) are particularly suitable for coating flat surfaces (strips, boards, sheets) and for temperature-sensitive substrates (paper, plastics). Acrylate-modified polyester resins are used for UV printing inks, UV varnishes for paper and plastics, as well as for pigmentable, electron beam-curable gloss and matt paints [2.86]. Radiation-curable polyester paints are also suitable for metal coatings with good elasticity. 

Uses Bonding agent for coating of polyester and polyamide substrates with plasticized PVC Features Good thermostability Properties Liq. vise. 12,500 mP-s-Bonding Agent TN/N [Bayer AG]... 

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