Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
2002-06-08
2004-11-02
Copenheaver, Blaine (Department: 1733)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C156S062800, C156S324000, C264S113000, C264S258000
Reexamination Certificate
active
06811649
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates generally to formed and forming of faced, marine or other transportation, heat resistant insulation; and more particularly to a lightweight, sturdy, protective and insulative board product.
There is need for lightweight board-like products as referred to, and particularly in marine environments, as for example on ships. Prior glass fiber board products were objectionable due to production of itching or irritation of users, and to their intrinsic weight, which requires a mode costly installation. There is need for glass fiber content protective facing board products that will not produce objectionable itching, and for products having the highly advantageous features of construction, functions and results provided by the methods disclosed herein.
SUMMARY OF THE INVENTION
It is a major object to provide an improved board product with glass fiber content, that meets the above need and overcomes prior problems. Basically, the board product of the invention is a lightweight, insulative, composite sheet consisting essentially of, or combining,
a) homogenized glass fiber and binder materials forming a first layer,
b) binder material extending in a second layer on a surface of the first layer and bonded thereto,
c) woven glass fiber facing cloth extending in a third layer on a surface of the second layer and bonded thereto so that the second layer is sandwiched between the first and third layers,
d) the binder material being cured to integrate the product.
As will be seen, the first layer is provided to have a wool-like composition; and the second layer binder resin typically has a sprayed-on, and cured in situ, configuration on the surface of the wool-like first layer. Also, the first layer typically and preferably consists of about 80% by weight of glass fibers, and about 20% by weight of binder resin, the combination of these materials being homogenized. The third layer woven cloth has a binder content of less than about 10%, and is adherent to a surface of the second layer, whereby the second layer is sandwiched between the first and third layers. The binder resin typically consists of Phenol Formaldehyde; and the glass fibers in the first layer are typically between 1 and 2 microns in length, and surrounded by binder resin in the wool-like, cured state of the first layer.
The basic method of the invention includes:
i) forming a composite, three layer laminated sheet as defined above,
ii) and drying and curing to composite sheet, at elevated temperature, as for example between 425° and 475° F.
As will be seen, the facing cloth layer is preferably applied onto the surface of the sprayed-on binder layer just prior to step ii) referred to above, to achieve optimum strength of the cured product.
These and other objects and advantages of the invention, as well as the details of an illustrative embodiment, will be more fully understood from the following specification and drawings, in which:
REFERENCES:
patent: 2676898 (1954-04-01), Folger et al.
patent: 2744044 (1956-05-01), Toulmin, Jr.
patent: 3769131 (1973-10-01), Genson
patent: 5018220 (1991-05-01), Lane et al.
patent: 5284700 (1994-02-01), Strauss et al.
patent: 5389121 (1995-02-01), Pfeffer
patent: 5472467 (1995-12-01), Pfeffer
patent: 5527587 (1996-06-01), Bahm
patent: 5985411 (1999-11-01), Pfeffer
patent: 2 409 855 (1977-11-01), None
Dictionary.com definition of fabric.
Copenheaver Blaine
Goff John L.
Haefliger William W.
UPF Corporation
LandOfFree
Line faced marine insulation, and method of production does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Line faced marine insulation, and method of production, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Line faced marine insulation, and method of production will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3336303