Structural hot melt material and methods
First Claim
1. A material comprising of in parts by weight:
- less than about twenty percent (<
20%) ethylene copolymer;
less than about forty percent (<
40%) epoxy;
less than about thirty percent (<
45%) epoxy-based resin;
less than about two percent (<
2%) blowing agent; and
from about one percent (1%) to about five percent (5%) curing agent.
3 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to a material, method, and application for reinforcement of structural members, especially joints such as a hem flange joint of an automobile. The method and material of the present invention comprises of combining, in parts by weight: less than about twenty percent (<20%) ethylene copolymer, less than about forty percent (<40%) epoxy, less than about thirty percent (<45%) epoxy-based resin, less than about two percent (<2%) blowing agent and from about one percent (1%) to about five percent (5%) curing agent (and optionally add any of the following components: less than about two percent (<2%) curing agent accelerator, from about twenty-five percent (25%) to fifty-five percent (55%) filler, and less than about one percent (<1%) of coloring agent). The application of the present invention comprises of: (1) providing a structural member having two substrates forming a space to be joined; (2) placing the material of the present invention in proximity of the space to be joined; (3) exposing the material to a heat source causing it to flow, fill, and cure in the defined area or space to be joined.
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Citations
24 Claims
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1. A material comprising of in parts by weight:
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less than about twenty percent (<
20%) ethylene copolymer;
less than about forty percent (<
40%) epoxy;
less than about thirty percent (<
45%) epoxy-based resin;
less than about two percent (<
2%) blowing agent; and
from about one percent (1%) to about five percent (5%) curing agent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A material comprising of in parts by weight:
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about 3.8 percent ethylene-methyl acrylate copolymer;
about 23.49 percent of an adduct of bisphenol A epoxy;
about 24.24 percent bisphenol A epoxy resin;
about 0.26 percent epoxy phenol novoiac resin;
about 0.12 percent azodicarbonamide;
about 0.5 percent methylene diphenyl bis;
about 1.55 percent cyanoguanidine;
about 45.84 percent calcium carbonate; and
about 0.19 percent metal oxide.
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16. A method for forming a material for structural reinforcement comprising the steps of:
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providing in parts by weight less than about twenty percent (<
20%) ethylene copolymer;
providing in parts by weight less than about forty percent (<
40%) epoxy;
providing in parts by weight less than about thirty percent (<
45%) epoxy-based resin;
providing in parts by weight less than about two percent (<
2%) blowing agent;
providing in parts by weight from about one percent (1%) to about five percent (5%) curing agent; and
combining said ethylene copolymer, said epoxy, said epoxy-based resin, said blowing agent, and said curing agent to form said material for structural reinforcement. - View Dependent Claims (17)
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18. A method of reinforcing structural members comprising the steps of:
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providing a structural member having two substrates forming a space to be joined;
providing a material comprising of in parts by weight;
less than about twenty percent (<
20%) ethylene copolymer, less than about forty percent (<
40%) epoxy, less than about thirty percent (<
45%) epoxy-based resin, less than about two percent (<
2%) blowing agent and from about one percent (1%) to about five percent (5%) curing agent;
placing said material in proximity of said space to be joined;
exposing said material to a heat source causing said material to flow, fill, and cure in said space to be joined. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification