Title: Joining stiffening material to shoe upper using UHF field

Abstract: Formable or formed stiffening materials, especially for shoe capping, consisting of: at least one backing or layer of fibrous material and at least one thermoplastic synthetic resin, optionally containing fillers, plasticizers, dyes, pigments and/or stabilizers against light, heat and/or mechanical influences, which stiffening materials in a given case have an adhesive coating on one or both sides based on a thermoplastic synthetic resin, containing at least 3 parts of an active substance, e.g., carbon black, in 100 parts of thermoplastic synthetic resins.

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Inventors: Kremer, Paul (Grosskrotzenburg, DT)
Gora, Bernhard (Grossauheim, DT)
VAN Amsterdam, Cornelis (Viersen, DT)

Application Number: 523856
Filing Date: 1974-11-14
Publication_date: 1978-01-24
Assignee: Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler (Frankfurt, DT)
Primary Class(es): 36/45 12/146D, 36/68, 156/272.2, 156/275.7, 156/309.9, 442/103
Other Classes:
US Patent Ref:

2361527	Oct, 1944	Bacon	156/272.
2569764	Oct, 1951	Jonas	36/68.
2611195	Sep, 1952	Brophy et al.	36/68.
2656622	Oct, 1953	Walsh	36/68.
3234668	Feb, 1966	Radcliffe	36/68.
3397418	Aug, 1968	Steadman et al.	156/272.
3486967	Dec, 1969	Fisher	156/306.
3528867	Sep, 1970	Leatherman et al.	156/272.
3620875	Nov, 1971	Guglielm, Sr. et al.	156/272.
3657038	Apr, 1972	Lightfoot	156/275.

Other Refs:
Primary Examiner: Powell, William A.
Assistant Examiner: Wityshyn, M. G.
Attorney: Cushman, Darby & Cushman