Plastics Aclar

MIR techniques have simplified obtaining infrared spectra of many materials important in packaging. These include rubber, plastics, laminations, and components of these materials that find use in pumps, sample packages, and devices. The combination of MIR and computerized pattern recognition techniques can be used for differentiating and classification of flexible packaging polymers such as polyvinyl chloride (PVC), polyvinylidene chloride (PVdC), acrylonitrile (Barex), and CTFE (Aclar) [22]. 

Aclar Barrier Films, Allied Signal Plastics, Morristown, NJ. 

The use of other plastics tends to be related to specialised needs and whether their advantages justify the additional cost, e.g. Aclar (trade name) may cost twenty times more than PET but is the nearest approach to an inert plastic and is approximately ten times less permeable than Saran (PVdC—polyvinylidene chloride) which is widely used as a film coating. However foil, even when thin (0.006 mm and above) remains the best barrier material, with newer techniques of film metallisation, especially where two contact layers are used, coming a close second best. 

Aclar Performance Films, Suppl. Tech Rep. No. SFI-14, Revised 9-89, Allied Signal Eng. Plastics (1989)... 

Chlorine gas lends to plasticize the Him Allied Sig. Aclar 22 film... 

The stereochemically random presence of the Cl atom limits the crystallinity. In commercial resins, it is generally further modified by copolymerization, resulting in a semicrystalline material, with a glass transition temperature about 45°C and a melt temperature of about 190°C. It is sold by Allied Corp. under the name Aclar. PCTFE can be melt processed, though not easily. Its main advantage is its extremely good water vapor barrier, which is the best of any plastic film available. The WVTR at 38°C and 90% RH is 9.8-17.7 g pm/m2 d (0.025-0.045 g mil/100 in2 24 h). 

Aclar Performance Films, supplier technical report, (SFI-14, Rev. 9-89) Alhed-Signal Engineered Plastics, 1989. 

Trade Name Synonyms Aclar 22A [Honeywell Perf. Polymers http //www.honeywellppc.com, http //WWW. honeywell-plastics. com]... 

Trade Name Synonyms Aclar Films [Honeywell Perf. Polymers http //www.honeywellppc.com, http //WWW. honeywell-plastics. com] Fluorolube FS-5 [Occidental http //www.oxychem.com], Fluorolube GR-290, GR-362, GR-470, GR-544, GR-660 [Occidental http //www.oxychem.com] Fluorolube HO-125 [Occidental http //www.oxychem.com], Fluorolube LG-160 [Occidental http //www.oxychem.com] Fluorolube MO-10 [Occidental http //www.oxychem.com], Fluorolube S-30 [Occi dental http //www. oxychem. com] Fluorolube T-80 [Occidental http //www.oxychem.com], Halocarbon Grease 25-1OM t[Halocarbon Prods. http //WWW.halocarbon.com] Halocarbon Grease 25-20M [Halocarbon Prods. http //WWW. halocarbon. com]... 

Other polymer carriers such as cellulose triacetate, Aclar (a fluorinated Mylar ), Teflon, and cellophane have been used for very specific applications. We have had excellent success with the silicone-coated polyester for a number of binder/solvent/plasticizer systems with a wide variety of materials. A cost-competitive and environment-friendly coated paper carrier has been evaluated and described by one of the authors in a recent publication. These paper carriers can be recycled easily and yield tapes that are equivalent to the polymer carriers. 

Tends to plasticize the film Aclar 22 Allied Signal Specimen Film... 

On the following day, sections are flat embedded between a glass slide (to provide a flat surface) and two sheets of ACLAR plastic. The first sheet is the spacer sheet, while the other is the cover sheet (Fig. 1). On the spacer sheet, make a hole with a razor blade larger than the tissue section. Glue the spacer sheet on top of the slide with super glue (Fig. 1). Then, a few drops of... 

Fig.1 Schematic view of flat-infiltration and flat-embedding procedure for array tomography. The tissue is fiat-infiitrated on top of an inverted glass petri dish containing a few drops of LR White, then covered by a glass coverslip (upper panel), and infiltrated overnight at 4 °C. On the next day, the tissue is flat embedded between a glass slide and two sheets of ACLAR plasBc (lower panel). One of the plastic sheets is a spacer while the other Is a cover. The tissue section is deposited in the hole of the perforated spacer sheet that was previously glued to one side of the glass slide (/owerpane/). Then, a few drops of LR White are added to the tissue section, and then covered by the cover sheet (lower panel). The tissue is incubated at 55 X for 24 h for polymerization...

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