Carpet strips

Base shoe- Molding used next to the floor on interior base board. Sometimes called a carpet strip. 

The sheets thus produced are cut into discs, or else formed into carpet rolls. The former process involves cutting circular or square portions from the sheets so as to fit the extruding press. These are examined for flaws and then compressed to form a cheese . The latter process involves cutting the sheet into strips which are then rolled into carpet rolls of a diameter suitable to fit the cylinder of the extruding press. 

This stretching, similar to the drawing of fibres, which promotes orientation and crystallite formation, is called biaxial orientation. It gives the film added strength and gas-barrier properties. In some processes, monoaxial (uniaxial) drawing is employed, e.g., polypropylene, which is then slit into thin strips and fabricated into heavy duty sacks, carpet backing, etc. The stenter process is used to make biaxial oriented poly(vinylidene dichloride) ("ding" film), polyester, polyamide and polypropylene films. 

Clear contrast These grass paths may not be immaculately maintained, but look well-groomed in this context, forming neat strips of green carpet between "beds" of rough grasses and wild flowers. The effect looks intentional, rather than the result of neglect. 

Uses Plasticizer in polyvinyl chloride used in vinyl tile, manufacture of artificial leather, carpet tile, food conveyor belts, weather stripping, tarps, automotive trim, traffic cones additive in poiyvinyi acetate emuisions, ethyiene glycoi, ethyl cellulose, and some adhesives organic synthesis. 

Pesticides may be periodically inttoduced into indoor air by direct application (e.g. insect sprays and bombs, disinfectant sprays and room deodorizers). In addition, there are often sources that continually emit vapors into the living space (e.g. continuous evaporation of residues from crack and crevice treatments and emissions from pest-control strips or other devices). Whether used inside the home or office, or outside on the lawn or garden, pesticides accumulate on indoor surfaces, especially in carpet dust, and also in upholstery and in or on children s toys (Lewis et al 1994b, 1999 Simcox et al., 1995 Nishioka et al 1996, 1999 Gurunathan et al., 1998). 

Figure 8.1 Schematics of peg canopy, flexible strip canopy, plastic tree canopy, and indoor-outdoor carpets on sinusoidal hill shapes (Meroney, [418]).

There are some other toxicologic manifestations of organophosphates that deserve mention. For example, accumulation of low levels of chemicals that irreversibly bind to cholinesterase may result in no signs of overt toxicity until the critical threshold is passed, whereby there is insufficient cholinesterase present to control synaptic function. This effect will not occur after ingestion of trace amounts in food. As discussed in this book, the scenario applies to the simultaneous home use of flea bombs, animal dips, carpet sprays, and no-pest strips in the same room. The signs are acute intoxication. This is a common presentation to veterinarians for dogs living in households of overzealous pet owners. 

Blends of ethylene-methacrylic acid or ethylene-acrylic acid copolymers with PE (Formion ) show either dispersed or co-continuous morphologies. They have outstanding fuel and oil resistance, adhesion to glass and metals, and ease of foaming. The blends are injection molded into bumper end caps, bumper mb strips, fender stone guard, extmded into products such as carpet heel pad and window trim. Moldings can also be foamed for bumper guards. 

For increased traction, POWERBACK Rubber Duct Cable Protectors are now available with optional Velcro strips for use on carpet. These non-metallic, flexible rubber protectors are extremely durable, easy to install, and organize portable cords and cables while reducing trip hazards. Fits multiple cable sizes. Available in 5- or 10-ft.lengths and can be sUt on the bottom for easy cord insertion. Checkers Industrial Safety Products, www.cableprotector.com, (800) 438-9336. Circle 247... 

A process has been developed to separate carpet waste using a cold, dry abrasive step [55]. Dry ice pellets are shot into an abrasive zone as a segment of discarded carpet on a conveyor system is stripped apart and disassembled. The dry ice pellets freeze the binder material (usually latex), lowering it to a temperature that makes the binder brittle and easy to break apart. The dry ice pellets sublimate directly into gas without any liquid residues. This process eliminates the need for a drying operation, which saves energy and avoids potential chemical pollution. 

United Recycling Inc. (URI), which was in operation from the early 1990s to 1999, introduced two extruded blends (URI 20-(X)l and URI 10-(X)1) from postconsumer carpet waste for injection molding in 1993 [61]. These were the first commercial recycled carpet compounds. The process used both polypropylene and nylon carpet. Their products were described as proprietary blends containing polypropylene. The composition and properties of the two compoimds are listed in Table 16.5. The molding compounds developed by URI were used to extrude carpet tack strip. 

Staple form for spirming with other fibers. A core yarn with a metal surface is produced by twisting a strip of metal around yarn of natural or manufactured fibers. The most important characteristic of me-talhc fiber and the chief reason for its use in textiles is glitter. Metalhc fibers are used as a decorative accent in fabrics for apparel, bedspreads, towels, draperies, and upholstery. A relatively new application for metalhc fibers is in carpet pile, where they are being used in small percentages for control of static electricity. 

A total of four types of recycled fiber plus two types of virgin fiber were used as the reinforcement in concrete. Three recycled fibers were obtained from disposed tires and one from carpet waste. The tire fibers included two types of tire fabrics composed of polymeric tire cords, tire-rubber strips which were the main component of tires, and tire steel fibers which were the radial steel reinforcement of tires. The fibers from carpet waste contained backing fibers (nsually polypropylene), latex adhesive particles, and a small amount of face fibers. In addition, hooked end steel fibers and FiberMesh polypropylene fibers were also used as virgin fibers for comparison. Recycled fiber volume fractions in each composite were fixed at 2% except that the tire steel fiber and the virgin fibers (steel fiber and FiberMesh) were used at a 1 vol%. 

The restrained shrinkage cracking behavior was measured by the total crack width of each ring specimen with respect to time. The crack widths were significantly reduced in the fiber composites, including all recycled fibers except those with rubber strips. In the recycled carpet fiber composites, the crack width and spacing were evenly distributed. The crack widths were much larger than those with steel fibers, and about one half of those with FiberMesh. 

Once the reaction is successful, the elastomer strip is loosened from the centrifuge wall with the non-cutting side of a thin lancet. The elastomer film is carefully removed from the cell together with the Teflon support and cut into smaller (usually two or three) pieces. For cutting the swollen polymer gel the best method is to use a carpet knife and a hammer. That way, a clean cut of both the gel and the Teflon band is achieved. It is useful, especially if working with sticky side chain elastomers, to keep some toluene at the preparation table to clean the tools before reuse. If possible, both long rims of the film should also be cut with a carpet knife, because small defects at the rim can... 

Rotary/Zoor machines for use in scrubbing, stripping, scouring, and polishing resihent and hard-surface floors as well as shampooing carpets. A 20-in model is most efficient. 

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