Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Reexamination Certificate
1998-08-17
2002-09-17
Kuhns, Allan R. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
C264S046400, C264S046600, C264S053000, C264S054000, C264S271100, C264SDIG006
Reexamination Certificate
active
06451231
ABSTRACT:
BACKGROUND OF THE INVENTION
Structural foams are a cost effective way to meet structural requirements with a very low weight. In the automotive industry this means money.
The use of plastic as structural components has been increasing yearly in the building of automobiles. Plastics are lightweight, corrosion proof and in some cases recyclable. There is a cost in strength and in elevated temperature warpage with such plastics. Known plastic materials include sheet molded compounded (“SMC”) and ABS materials. In certain applications the strength of the plastic is not sufficient or the weight of the plastic is too much. It would be therefore desirable if some means could be provided to structurally reinforce such plastic materials. It would also be desirable if such means could be used for materials other than plastic and for uses other than in the automotive industry.
SUMMARY OF THE INVENTION
An object of this invention is to provide structural foams which meet the above needs.
A further object of this invention is to provide such structural foams which can be cured under heat or alternatively variations which can be cured at ambient temperature.
In accordance with this invention high performance structural foam is provided for stiffening parts, such as plastic. Such parts could be premolded parts, could be hollow, could be channel shaped or could simply be structural members of any shape which require reinforcement. The foam is preferably a two component syntactic material which may be expandable. The foam preferably contains beads such as glass, ceramic or plastic beads to provide the desired viscosity and to reduce weight and cost. A blowing agent could be used where the foam is expandable. The foam preferably also includes a rheological agent to control flow of the material. A curing system is used to control the polymer properties of the material. In addition, the foam could include diluents filler surface treatment, rubber and fibers as well as other additives.
REFERENCES:
patent: 3123170 (1964-03-01), Bryant
patent: 3493257 (1970-02-01), Fitzgerald et al.
patent: 3892819 (1975-07-01), Najvar
patent: 3900543 (1975-08-01), Davis
patent: 4090734 (1978-05-01), Inami et al.
patent: 4238540 (1980-12-01), Yates et al.
patent: 4250136 (1981-02-01), Rex
patent: 4252378 (1981-02-01), DeBolt et al.
patent: 4397490 (1983-08-01), Evans
patent: 4559274 (1985-12-01), Kloppe et al.
patent: 4562227 (1985-12-01), Rogler et al.
patent: 4595623 (1986-06-01), DuPont et al.
patent: 4598106 (1986-07-01), Utsugi
patent: 4610836 (1986-09-01), Wycech
patent: 4623584 (1986-11-01), Masui et al.
patent: 4751249 (1988-06-01), Wycech
patent: 4836516 (1989-06-01), Wycech
patent: 4853270 (1989-08-01), Wycech
patent: 4861097 (1989-08-01), Wycech
patent: 4876055 (1989-10-01), Cattanach
patent: 4901500 (1990-02-01), Wycech
patent: 4908930 (1990-03-01), Wycech
patent: 4922596 (1990-05-01), Wycech
patent: 4923902 (1990-05-01), Wycech
patent: 4978562 (1990-12-01), Wycech
patent: 4995545 (1991-02-01), Wycech
patent: 5007643 (1991-04-01), Okumoto et al.
patent: 5019605 (1991-05-01), Jannie
patent: 5122398 (1992-06-01), Seiler et al.
patent: 5124186 (1992-06-01), Wycech
patent: 5252632 (1993-10-01), Savin et al.
patent: 5255487 (1993-10-01), Wieting et al.
patent: 5258089 (1993-11-01), Tanaka et al.
patent: 5274006 (1993-12-01), Kagoshima et al.
patent: 5285604 (1994-02-01), Carlin
patent: 5453453 (1995-09-01), Lamon et al.
patent: 5470886 (1995-11-01), Makhlouf et al.
patent: 5575526 (1996-11-01), Wycech
patent: 5587231 (1996-12-01), Mereer et al.
patent: 5665461 (1997-09-01), Wong et al.
patent: 5712317 (1998-01-01), Makhlouf et al.
patent: 5720324 (1998-02-01), Vinciarelli
patent: 5773121 (1998-06-01), Meteer et al.
patent: 5804608 (1998-09-01), Nakazato et al.
patent: 5846357 (1998-12-01), Meteer et al.
patent: 5888642 (1999-03-01), Meteer et al.
patent: 29 19 046 (1980-11-01), None
patent: 90 11 147 (1990-12-01), None
patent: 93 20 333 (1994-07-01), None
patent: 0 061 131 (1982-09-01), None
patent: 0 414 302 (1991-02-01), None
patent: 0 453 777 (1991-10-01), None
patent: 628868 (1947-03-01), None
patent: 2061 196 (1981-05-01), None
patent: 2197 267 (1988-05-01), None
patent: 01069308 (1989-03-01), None
patent: 01069309 (1989-03-01), None
patent: 02206537 (1990-08-01), None
patent: 5389920 (1993-02-01), None
patent: WO 89/06595 (1989-07-01), None
patent: WO 93/05103 (1993-03-01), None
Harrison Bruce L
Hilborn Bradley L
Koshy Vettithara C
Harper Stephen D.
Henkel Corporation
Kuhns Allan R.
LandOfFree
Method of forming a high performance structural foam for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of forming a high performance structural foam for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of forming a high performance structural foam for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2910767