Edge curling preventing

Edgegum. [Chemcmic Industries] Solvent or water-based polymers provides weight to fabric edges to prevent curling. 

Calcium chloride is available from chemical supply houses, or as "Damp-Rid" refills, from most hardware stores. Place a sufficient amount of calcium chloride in the bottom of a polyethylene container. Place a piece of aluminum foil over but not touching the CaC12, and place the leaves to be dried on top of foil. Curling up the edges of the foil, should prevent the leaves from touching the CaC12. Then seal the container. The leaves should be dry in about two days. 

The suction apron comprises an endless rubber belt travelling round a vacuum box. It is perforated and in contact with the uncoated side of the paper web, providing through the coater controlled tension in the substrate (if the paper is pulled only from the wind-up end of the machine, there can be tearing and breaks). The suction apron also helps prevent curling at the edges of the web. 

Edge gum for prevention of fabric curling. Applied via gumming machine after slitting of knit goods. Rapid drying. 

Leaves discolored and puckered or curled. Causes Leafhoppers aphids viral diseases bacterial ring rot. If leaves have yellow patches and brown edges, look for leafhoppers—tiny green or brown insects that suck plant sap and hop, scuttle sideways, or fly when disturbed. Spray with insecticidal soap or pyrethrin to control. Prevent infestations by covering plants with row cover when they come up. 

Leaves with brown edges. Cause Bacterial canker. Lower leaves wilt and curl up stems develop light-colored streaks and are brown and mealy inside. See page 229 for an illustration of this disease. Destroy infected plants. To prevent problems, presoak seed in 10 percent bleach solution, and avoid wounding plants. Don t touch plants when they are wet to avoid spreading the disease. 

Edge roll n. The curl that develops on the edge of a single-knit fabric preventing it from lying flat. 

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