Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
1998-12-15
2001-06-12
Maki, Steven D. (Department: 1733)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C156S137000, C156S141000, C156S142000
Reexamination Certificate
active
06245170
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a new endless belt construction and to a new method of making such a new endless belt construction.
2. Prior Art Statement
It is known to provide an endless belt construction formed mainly of polymeric material and comprising a tension section, a compression section, a load carrying section disposed between the tension section and the compression section and being secured thereto, one of the sections comprising a plurality of layers of polymeric material disposed in stacked relation, and a plurality of bleeder yarns disposed between an adjacent pair of the layers of polymeric material and being secured thereto to serve as fluid passages for any fluid present at the interface between the adjacent pair of layers of polymeric material during the heat curing of the belt construction. For example, see the U.S. Pat. No. to Hollaway, Jr., 4,434,019.
SUMMARY OF THE INVENTION
It is one of the features of this invention to provide a new method of making a belt construction wherein trapped air and/or gases that are formed between adjacent polymeric layers of the belt construction during the heat curing of the belt construction are bled to the exterior thereof.
In particular, it was found according to the teachings of this invention that a relatively thin non-woven sheet of material can be disposed between the adjacent layers of the belt construction to subsequently bleed the trapped air and/or gases that are encountered during the subsequent heat curing operation.
For example, one embodiment of this invention provides a method of making an endless belt construction formed mainly of polymeric material and comprising a tension section, a compression section, a load carrying section disposed between the tension section and the compression section and being secured thereto by the step of heat curing the belt construction, one of the sections comprising a plurality of layers of polymeric material disposed in stacked relation, the method comprising the step of disposing a paper-thin sheet of non-woven material between an adjacent pair of the layers of the polymeric material before the step of heat curing so that the sheet is secured to the adjacent pair of the layers during the step of heat curing the belt construction.
Accordingly, it is an object of this invention to provide a new method of making an endless belt construction, the method of this invention having one or more of the novel features of this invention as set forth above or hereinafter shown or described.
Another object of this invention is to provide a new endless belt construction having one or more of the novel features of this invention as set forth above or hereinafter shown or described.
REFERENCES:
patent: 2361645 (1944-10-01), Nassimbene
patent: 3914501 (1975-10-01), Miller et al.
patent: 3951719 (1976-04-01), Hough
patent: 4226069 (1980-10-01), Hinds
patent: 4299588 (1981-11-01), Standley
patent: 4432744 (1984-02-01), Imamura et al.
patent: 4434019 (1984-02-01), Hollaway, Jr.
patent: 4744843 (1988-05-01), Lewis
patent: 4997611 (1991-03-01), Hartmann
patent: 5030497 (1991-07-01), Claessen
patent: 5431986 (1995-07-01), Ortega et al.
patent: 5589258 (1996-12-01), Maddern et al.
patent: 5643378 (1997-07-01), White et al.
patent: 1-239251 (1989-09-01), None
“Finishing Spunbondeds”, America's Textiles Reporter/Bulletin, Clark Publishing Company, pp. 40 and 42, Apr. 1972.*
Flo-Tech Incorporated Product sheet for HTP 1.5, No date.*
Wingate, Fairchild's Dictionary of Textiles, p. 417, 1979.*
Kirk Othmer, Encyclopedia of Chemical Technology, pp. 72-104, 1981.
Sides Douglas W.
White, Jr. Jack D.
Dayco Products Inc.
Maki Steven D.
Tassone Joseph V.
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