Handle-oriented finishing

Handle-oriented finishing, such as fulling to add weight and density, hydrophobic finishing to produce a fabric that repels stains or water, and weighting silk with metallic salts or polymer to add weight and improve handle. 

Blow moulding is used to manufacture enclosed shapes (bottles, barrels, containers, etc.) where the shape is simple. Screw threads can be formed on the top, corrugated sections can be used to stiffen the product, and handles can be incorporated. Thinning will occur on the corners of the base and also on the corners in the sides of square bottles, but can be reduced by blowing a profiled parison. Some orientation is created in the blowing the parison, and is largely retained in the finished product (e.g. at a maximum in the vertical walls of a bottle). 

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