| 摘要 |
<p>An insole construction is provided comprising a base layer (1) secured to a backer layer (5), the base layer (1) comprising a polypropylene core sandwiched between two impregnated non-woven fabrics. The backer layer (5) may have a similar construction and has a shape similar to the base layer (1) in a heel region of the insole. The backer layer (5) is adhered to the base layer (1) through pressure and heat. The backer layer (5) may be an extruded thermoplastic film sandwiched between layers of fusion-bonded non-woven fabric and having an impregnation of styrene copolymer. This insole construction allows formation of exceptionally stiff insoles in the necessary heel section of the insole without creating thermal distortion problems or lamination difficulties when a moulded outsole is attached.</p> |
