Pillow packs

Pillow Pack. Today these are usually used for added protection as a secondary pack. In many respects they are similar to single-roll sachet packs, but the product forms the outline of the pillow pack, which is usually a heat fin—sealed up one edge and heat sealed/guillotined on each end. 

Plasticised PVC—rarely used except as bags (IV solutions, blood) or as pillow packs. Sealed with special adhesives, or by HF/RF welding. Plasticised film is highly moisture permeable. 

The types of pack that are sealed straight away on the filling line include blister packs, strip packs, pillow packs, ampoule filling and Rommelag/ALP form fill and seal systems. 

The occlusive mask improves patient comfort the skin liquefies beneath the mask, and the liquefied integuments do not drip on the skin. The occlusive mask prevents the skin from sticking to clothes or pillows. When an occlusive mask is put in place, the patient can apply a cooling cold pack to alleviate the painful burning sensation, whereas with the open technique, direct contact with the skin is not possible. 

Since relatively small, briquetted, almond or pillow-shaped ice can be easily poured and metered, it became a superior cold-packing material. Roller presses were preferred for this operation because the thermal contraction of machine parts does not cause operational problems. Dry ice, compressed and shaped solid COj, is an even better material for cold packing because it evaporates rather than melts and its cooling capacity is almost three-times higher than that of water ice. Dry ice compacts are typically made with hydraulic presses and are still used today. 

These problems are resolved by briquetting. The DMT flakes are readily densified and bonded under moderate pressure in a roller press that is equipped with a screw feeder and pillow shaped pockets. The briquettes have high density and are well formed. During a screening operation they are separated into singles and leakage and land areas that surround the briquettes and are rubbed-off on the screen, are recirculated to the press. The briquettes have a volume of about 4cm, are about 20 mm square and 14 mm thick, pack, store, and handle well, and can be easily metered and remelted. 

The most common agglomeration technology for the conversion of sodium cyanide into a safe product is briquetting with roller presses. Almond- or pillow-shaped compacts are made. The systems are completely enclosed, equipped with highly effective dust collection systems to safeguard the operators, and executed in stainless steel to keep corrosion in check. The discharge from the roller press is screened within the enclosed system, fines are recirculated internally to the briquetter feed bin, and dean product is immediately packed into sealed containers. 

After replacing 0 -rings or other clutch cylinder packings, the clutch assembly should be checked for air leaks while on the floor. Do not install the pillow block roller bearings until you are sure there are no air leaks in the clutch. 

The most effective way to make profiled fibers is to replace the traditional spinneret pack with a profiled one, but the deformation from the capillary cross section to the final cross section of fibers is related to the dye swell, which depends on the viscoelasticity of polymers and the particular processing conditions. Some typical cross sections of capillaries are shown in Fig. 2.12. Hills (in United States) and Kasen (in Japan) are two famous companies that produce the spinnerets with noncircular cross sections of capillaries. Profiled fiber can provide different properties to fibers as shown in Table 2.30. Like hollow profiled fibers, it provides a notable weight advantage to its final products like pillow, excellent bulkiness, warm resilience, and soft touch like Airclo produced by Toray. Air-clo has a hollow ratio up to 24% in its 15 Denier fiber series [36]. A special cross section of capillaries can provide profiled fibers with different feamres, as fisted in Table 2.31. 

There are many examples of crevice chemistries at work in all sorts of designs and applications. The following section describes a few of these. Other examples can be found throughout the text and particularly in Chap. 7, where pack rust of steel components and pillowing of aluminum fayed structures are described. 

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