bonding

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Method of producing fabric in which synthetic fibres or filaments are stuck together. Fibres may be bonded in several different ways. One method is to apply adhesive to a web of fibres which is then compressed. Another method is spin bonding in which, owing to their thermoplastic properties, nylon or polyester fibres can be bonded together using heat, without adhesive. For stitch bonding, webs of fibres are stitched together to produce fabrics. Needle punching is a method of bonding in which barbed needles move up and down through webs of fibres laid on either side of an open-weave fabric. As they move, the needles pull fibres through the fabric, forming a bonded fabric.

Blue represents Finland's 60,000 lakes. White stands for the snow which covers the ground for 5–7 months each year. Effective date: 1 June 1978. >>