Process and equipment for producing a rubber for a tire comprising a kneading step

Patent metadata

Field	Value
Publication number	US-9533431-B2
Application number	US-201214117532-A
Country	US
Kind code	B2
Filing date	May 11, 2012
Priority date	May 13, 2011
Publication date	Jan 3, 2017
Grant date	Jan 3, 2017

Abstract

In the process for producing a rubber for manufacturing a tire:
a calender forms a ply with a mixture of ingredients of the rubber while a conveyor moves the ply in a first direction, a mass of product other than the rubber is deposited on the ply, and the conveyor displaces the ply in a second direction, such that the mass is arranged between two faces of the ply extending one against the other.

First claim

The invention claimed is:

1. Process for producing a rubber for manufacturing a tire, comprising:
forming a ply by a calender with a mixture of ingredients of the rubber whilst a conveyor moves the ply in a first direction,
depositing a mass of product other than the rubber on the ply, and
moving the ply by the conveyor in a second direction, such that the mass is arranged between two faces of the ply extending one against the other.

2. Process according to claim 1 , wherein the ply is circulated in the form of a closed loop.

3. Process according to claim 2 , wherein a device comprising the calender and the conveyor opens the loop so as to form two free ends of the ply.

4. Process according to claim 1 , wherein the product forming the mass comprises a compound promoting the vulcanization of the rubber.

5. Process according to claim 1 , wherein the product is deposited only once a temperature of the ply has become lower than a predetermined threshold.

6. Process according to claim 1 , wherein the ply is discharged from a device comprising the calender and the conveyor, together with the mass arranged between the two faces extending one against the other.

7. Process according to claim 6 , wherein the conveyor carries out the discharge in the second direction.

8. Equipment for producing a rubber, able to carry out a process according to claim 1 , and which comprises a calender, a first conveyor, and a second conveyor, the equipment being able to circulate the ply in a closed loop by passing the ply through the calender and on the first conveyor which moves the ply in the first direction,
the second conveyor being able to dispense the mass directly onto a portion of the ply carried by the first conveyor when the ply circulates in a closed loop,
the first conveyor being then able to move the ply in a second direction, such that the mass is arranged between two faces of the ply extending one against the other.

9. Equipment according to claim 8 , further comprising cooling means within the calender.

10. Equipment according to claim 8 , wherein an end of the second conveyor is located upstream of the calender with respect to a discharge direction, the discharge direction being defined as movement of the first conveyor in a direction outside of the equipment.

11. Equipment according to claim 8 , further comprising a third conveyor, which is inclined with respect to the vertical direction and has an end arranged above the calender.

12. Equipment according to claim 11 , further comprising cooling means within the third conveyor.

13. Equipment according to claim 11 , wherein the second conveyor has an end arranged below the third conveyor.

Assignees

• Magne Andre
• Vacheron Christian
• Michelin & Cie
• Michelin Rech Tech

Inventors

• Magne Andre
• Vacheron Christian

Classifications

• B29B7/566 Primary

  provided with means to take material away from a set of rollers and to reconduct it to the same set; provided with endless belts, e.g. which can be in or out of cooperation with at least one of the rollers · CPC title

• B29B7/88

  Adding charges {, i.e. additives} · CPC title

• B29B7/606

  specially adapted for feeding calenders or the like · CPC title

• B29B7/7495

  for mixing rubber · CPC title

• B29C43/24

  Calendering · CPC title