Refastenable mechanical fastening system having particular viscosity and rheology characteristics

A fastening system for attaching to a complimentary receiving surface, said fastening system comprising:

• a substrate;
• and
• a multiplicity of prongs joined to said substrate, each of said prongs comprising a base comprising the plane of attachment of said prong to said substrate such that said prong is joined at said base to said substrate;
• a shank having a proximal end and a distal end, said proximal end being contiguous with said base, said shank projecting longitudinally outwardly from said base and said substrate;
• and an engaging means for securing the fastening system to a complimentary receiving surface so as to cause mechanical interference between said engaging means and the receiving surface, said engaging means being joined to said distal end of said shank such that said engaging means laterally projects radially outwardly beyond the periphery of said shank and away from said substrate, said engaging means forming an included angle of greater than or equal to 180.degree.;
• each of said prongs being made of a molten thermally sensitive material deposited onto said substrate, said molten thermally sensitive material comprising a storage modulus less than 5000 dynes/cm.sup.2 at an application temperature, and a storage modulus of at least 1.times.10.sup.6 dynes/cm.sup.2 at a temperature no more than 40.degree. C. lower than said application temperature.