Rigid core for forming tire and tire manufacturing method using the same
US-2016250814-A1 · Sep 1, 2016 · US
Method for producing tire having tread with foamed material and hollow tread pattern elements
US9604422B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9604422-B2 |
| Application number | US-201214114521-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 27, 2012 |
| Priority date | Apr 28, 2011 |
| Publication date | Mar 28, 2017 |
| Grant date | Mar 28, 2017 |
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- Title
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Abstract
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A layer of cellular material forms a running layer ( 14 A) of a tread ( 14 ) in which tread pattern elements ( 20, 22, 26 ) are made. In order to form the cellular material, an uncured blank is provided with a mass of material comprising p,p′-oxybis(benzenesulphonyl hydrazide) that forms a pore-forming agent. The uncured blank is placed in a vulcanization mold ( 28 ) comprising molding elements ( 30, 32, 34 ). At least 95% of the molding elements ( 30, 32, 34 ) each satisfy the following two conditions: a) the molding element ( 30, 32, 34 ) is separated from at least one other molding element ( 30, 32, 34 ) by a distance, expressed in millimeters, of less than or equal to DM =6.85+0.0065 T 3, T, greater than or equal to 3 phr, being the amount of p,p′-oxybis(benzenesulphonyl hydrazide) in the mass of material intended to form the cellular material, b) the molding element ( 30, 32, 34 ) is intended to form a tread pattern element ( 20, 22, 26 ) having a depth at least equal to 80% of the thickness of the running layer ( 14 A).
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for manufacturing a tire in which an uncured blank of the tire is vulcanized in a mold, this tire comprising a layer of cellular material that forms a running layer of a tread of the tire in which hollow tread pattern elements are made, the running layer having a thickness E, and a degree of expansion of greater than or equal to 50%, wherein: the uncured blank is provided with a mass of material, comprising p,p′-oxybis(benzenesulpho…
Assignees
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Classifications
Operations & Transport · mapped topic
- B29D30/0662Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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- What does patent US9604422B2 cover?
- A layer of cellular material forms a running layer ( 14 A) of a tread ( 14 ) in which tread pattern elements ( 20, 22, 26 ) are made. In order to form the cellular material, an uncured blank is provided with a mass of material comprising p,p′-oxybis(benzenesulphonyl hydrazide) that forms a pore-forming agent. The uncured blank is placed in a vulcanization mold ( 28 ) comprising molding elements…
- Who is the assignee on this patent?
- Lopez Jose Merino, Vasseur Didier, Cuscito Olivia, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification B29D30/0662. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 28 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).