Slitters

Figure 11.4 The glass wool manufacturing process. 1 Tank 2 forehearth 3 spinners 4 conveyor 5 curing oven 6 trimmers 7 slitters 8 bandsaw 9 guillotine 10 rolling machine.

Gauge Inspection PeDsttzers / Dicers Cut off Equipment Vacuian Sizing Equipm Takeoff equipment Slitters... 

Grinding, cutting Inserts Twist drills Whetstones Industrial knives Circuit-board drills Oil-drilling tools Slitter blades Surgical scalpels Saws... 

These machines have distinctly different modes of action. The characteristic action of crushers is slow compression. Grinders apply impact and attrition, sometimes combined with compression ultrafine grinders function mainly by attrition. Cutters, dicers and slitters are characterized by their cutting action. 

Fig. 7. Extmsion of roll-cast film A, die inlet B, cast-film die C, air gap with molten web D, casting roll E, stripping roll F, idler roll G, edge-trim slitter ...

As seen in Figures 6 and 7, the final system has a tab that aides in commercial system application. This tab is formed from the release liner by the relamination step, which consists of placing a roll of laminate onto the slitter-relaminating equipment. This roll is then guided through rollers where the release liner is removed and slit (sliced) to the correct width. The slitted material is then placed... 

EQUIPMENT IDENTIFICATION Mixer manufactured by (vendor), with an approximate volume of 20 Gallons Coater/Dryer/Laminator manufactured by (vendor), Slitter/Rewinder manufactured by (vendor) and, Pouching Machine (with Die Cutter) manufactured by (vendor). Equipment numbers are identified in the appropriate section of this document. 

Blown film extrusion is perhaps the most widely used extrusion technique, by production volume. Billions of pounds of polyethylene are processed annually by this method to make products such as grocery sacks and trash can liners. In a blown film system (Figure 14-30), the melt is generally extruded vertically upward through an annular die. The thin tube is filled with air as it travels up to a collapsing frame that flattens it before it enters the nip rollers, which pull the film away from the die. The flattened tube then travels over a series of idle rollers to a slitter,... 

Precision Cutters and Slitters Often it becomes desirable to reduce the size of a solid mass to regular smaller sizes. 

Any adjustment of the final paper roll width, from the 7 to 10 m width produced by the typical paper machine, is carried out as a separate step on a slitter-rewinder, using the 20 tonne rolls of paper produced by the paper machine. The final step is a heavy paper wrapping, which is applied to protect the contents from physical damage during shipment and to control the moisture content of the product. 

These machines do their work in distinctly different ways. Compression is the characteristic action of crushers. Grinders employ impact and attrition, sometimes combined with compression ultrafine grinders operate principally by attrition. A cutting action is of course characteristic of cutters, dicers, and slitters. 

Vacuum Sizing Equipment Takeoff equipment Slitters... 

Special requirements for warp knitting include the following (1) a device is required for proper density and even tension of elastomeric yams in producing elastomeric fabrics with repeatable results in stretch, recovery, modulus, shrinkage, and elastic fiber content (2) yam let-off must be electronic or electromechanical for best fabric control and reproducibility (3) special selvage holders (pullers), fabric hot-wire slitters. 

In a tight concept, the slitting line is essentially a single zone. The strip is run in a taut condition from the uncoiler to the recoiler. Generally, the recoiler provides all of the power to pull the strip off of the uncoiler, through the slitter,... 

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