公开(公告)号：US10766218B2

公开(公告)日：2020-09-08

申请号：US14020282

申请日：2013-09-06

Applicant: PIRELLI TYRE S.p.A.

Inventor： Giuseppe Cereda ,  Luca Merlo

IPC: B29D30/48 ,  B60C15/04

Abstract: Process for manufacturing a tyre, includes the following steps: (a) winding at least one metal wire so as to form a plurality of coils, the coils being radially superimposed and axially arranged side-by-side with respect to one another, so as to obtain a bead core; (b) applying at least one layer of a crosslinkable elastomeric material to the bead core obtained in step (a), so as to obtain a coated bead core; (c) partially crosslinking the at least one layer of crosslinkable elastomeric material, so as to obtain an amount of free sulfur of 30% by weight to 70% by weight, preferably of 40% by weight to 65% by weight, more preferably of 50% by weight to 60% by weight, with respect to the total weight of the sulfur present in the crosslinkable elastomeric material; and (d) applying a bead filler to the radial outer surface of the bead core obtained in step (c), so as to obtain a bead structure for a green tyre.

公开(公告)号：US20140000791A1

公开(公告)日：2014-01-02

申请号：US14020282

申请日：2013-09-06

Applicant: PIRELLI TYRE S.p.A.

Inventor： Giuseppe CEREDA ,  Luca Merlo

IPC: B29D30/48

Abstract: Process for manufacturing a tyre, includes the following steps: (a) winding at least one metal wire so as to form a plurality of coils, the coils being radially superimposed and axially arranged side-by-side with respect to one another, so as to obtain a bead core; (b) applying at least one layer of a crosslinkable elastomeric material to the bead core obtained in step (a), so as to obtain a coated bead core; (c) partially crosslinking the at least one layer of crosslinkable elastomeric material, so as to obtain an amount of free sulfur of 30% by weight to 70% by weight, preferably of 40% by weight to 65% by weight, more preferably of 50% by weight to 60% by weight, with respect to the total weight of the sulfur present in the crosslinkable elastomeric material: and (d) applying a bead filler to the radial outer surface of the bead core obtained in step (c), so as to obtain a bead structure for a green tyre.

Abstract translation: 制造轮胎的方法包括以下步骤：（a）卷绕至少一根金属线以形成多个线圈，所述线圈相对于彼此并排地径向重叠并且轴向布置，以便 获得珠芯; （b）将至少一层可交联弹性体材料施加到步骤（a）中获得的珠芯上，以获得涂覆的珠芯; （c）部分地交联至少一层可交联弹性体材料，以获得30重量％至70重量％，优选40重量％至65重量％的游离硫的量，更优选 50重量％至60重量％，相对于存在于可交联弹性体材料中的硫的总重量;和（d）将珠粒填料施加到步骤（c）中获得的胎圈芯的径向外表面上， 以获得生胎的胎圈结构。