Self-healing articles resistant to oxidizing agents
Assignee3M Innovative Properties Company
InventorsJohn B. Young, Loren L. Barber
Life of this patent
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Abstract
Self-healing articles resistant to oxidizing agents and useful for surface conditioning of sheets, especially metal sheets, are described. The articles comprise a plurality of compacted, stacked non-woven web elements, the web elements each comprising entangled fibers bonded together at points of mutual contact by a bonding agent. The article is resistant to an oxidizing agent or agents, has a Shore A hardness in the range of 70 to 93 and a void volume in the range of 2 to 30 percent. The non-woven articles can be configured into any of a variety of convenient and useful shapes, such as roll shapes, slab or bar shapes. The methods of making these articles are also described.
Claims39
A self-healing article suited for use in the surface conditioning of sheets, the article comprising:
- a plurality of stacked, compacted web elements, the web elements comprising entangled fibers bonded together at points of mutual contact by a bonding agent comprising material selected from the group consisting of polychloroprene, styrene butadiene rubber, polysulfide, silicone, polyepichlorohydrin, and combinations thereof, wherein the article is resistant to an oxidizing agent and has a Shore A hardness in the range of 70 to 93 and a void volume in the range of 2 to 30 percent.
A self-healing roll suited for surface conditioning of sheets, the roll comprising:
- a cylindrical body supported on its cylindrical axis for rotation, the cylindrical body comprising a plurality of compacted, stacked, disc-shaped non-woven web elements, the web elements each comprising entangled fibers, wherein adjacent fibers in each web element are bonded together at points of mutual contact by a bonding agent comprising material selected from the group consisting of polychloroprene, styrenue butadiene rubber, polysulfide, silicone, polyepichlorohydrin, and combinations thereof, wherein the roll is resistant to an oxidizing agent, has a Shore A hardness in the range of 70 to 93 and a void volume in the range of 2 to 30 percent.
A method of making a self-healing and non-woven article suited for the surface conditioning of sheets comprising the steps of:
- providing a plurality of non-woven web elements, the web elements comprising entangled fibers bonded at their points of mutual contact by a bonding agent comprising material selected from the group consisting of polychloroprene, styrene butadiene rubber, polysulfide, silicone, polyepichlorohydrin, and combinations thereof;
- stacking the plurality of non-woven web elements into a pile;
- compacting the pile under a compaction force;
- and
- restraining the pile in its compacted configuration to form an article so that the article is self-healing, resistant to oxidizing agents, has a Shore A hardness in the range of 70 to 93 and a void volume in the range of 2 to 30 percent.
A method of making a self-healing and non-woven article suited for the surface conditioning of sheets comprising the steps of:
- providing a plurality of non-woven web elements, the web elements comprising entangled fibers bonded at their points of mutual contact by a bonding agent comprising material selected from the group consisting of polychloroprene, styrene butadiene rubber, polysulfide, silicone, polyepichlorohydrin, and combinations thereof;
- stacking the plurality of non-woven web elements into a pile;
- compacting the pile under a compaction force;
- restraining the pile in its compacted configuration;
- heating the pile in its compacted configuration to an elevated temperature to integrally bond the layers;
- and
- cooling the heated pile to provide an article that is self-healing, resistant to an oxidizing agent, and has a Shore A hardness in the range of 70 to 93 and a void volume in the range of 2 to 30 percent.
A method of making a self-healing and non-woven article suited for the surface conditioning of sheets comprising the steps of:
- providing a plurality of non-woven web elements, the web elements comprising entangled fibers bonded at their points of mutual contact by a bonding agent comprising nitrile rubber and water;
- stacking the plurality of non-woven web elements into a pile;
- compacting the pile under a compaction force;
- restraining the pile in its compacted configuration;
- and
- volatilizing the water in said bonding agent to form an article so that the article is self-healing, resistant to oxidizing agents, has a Shore A hardness in the range of 70 to 93 and a void volume in the range of 2 to 30 percent.
Dependencies are inferred from the claim text.