Ice bags

At the opposite end of the polyethylene spectrum are the so-called ultra low density products with a high concentration of short chain branching that inhibits crystallization. These materials are soft, flexible, and transparent we encounter these materials in applications such as medical tubing, meat packaging films, and ice bags. 

Ice put an ice bag or cold pack to the injured area for 20 minutes 4-8 times a day. A plastic bag filled with crushed ice and wrapped in a towel can be used. Remove the ice after 20 minutes to avoid cold injury. 

For the transport from the dry ice box to the beam line, the sample holder was wrapped in a plastic bag filled with crushed dry ice. The Kapton-foil cage could be slid up onto the cryojet nozzle, which allowed easy access to the sample mount. The polyamide cup was placed into the sample mount, while being in the dry ice bag. Once fixed onto the goniometer stage, the dry ice bag was removed, and the Kapton-cage was slid down to ensure continuous cooling of the sample during final adjustments of the cup. 

Devices classified as Class I only are very simple by design and have a very low potential to cause harm. Examples include toothbrushes, tongue depressors, elastic bandages, examination gloves, eye pads, ice bags, nasal rubber bulb syringes, hand-held surgical instruments. 

For therapeutic, health, and fitness piuposes, until recently, hot-water containers to heat body parts and ice bags to cool body parts dominated the market. Now, a number of new products have been developed, principally thanks to advances in the ease of manufacture of leak-proof polymer containers. These include two hand warmers carried in the palm (1) the GRABBER MYCOAL Hand Warmer made in Japan and distributed by GRABBER Warmers of Grand Rapids, Michigan, and (2) the Zap Pak Heat Pack made and distributed by Prism Enterprises in San Antonio, Texas. The former produces heat by a chemical reaction, but can only be used once. The latter produces heat by crystallization and can be regenerated. 

Physical therapists use different modalities for treating patients. Some of these treatments include ice bags, moist hot packs, whirlpools, and various exercise equipment. There is a potential slip and fall hazard if water is spilled on the floor or if electrical or other cords run across pathways. OSHA requires safe cleanup of spills and walkways free of obstructions. Floors must be kept clean and dry. Nonslip mats and other dry standing places should provide traction. Use nonslip floor mats in whirlpool areas. Keep aisles and passageways clear and in good repair, with no obstruction across or in aisles that may create a hazard. Provide floor plugs for equipment, so power cords do not run across pathways. Place a table to the side of the hydrocollator machine that stores the moist heat packs. 

Applications Ice bags, frozen food, packaging Garment bags... 

ULDPE and VLDPE resins find application in low temperature applications, such as ice bags, where lower density offers greater toughness. They are also used as sealing layers, replacing low density copolymers such as vinyl acetate, and as blend components to improve toughness. 

Figure 15.28 Ice bag. The application of ice bags, and the use of handheld tans and hydrogel dressings are excellent ploys for oontrolling discomfort during chemical peeling...

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