公开(公告)号：JPS5594802A

公开(公告)日：1980-07-18

申请号：JP16745879

申请日：1979-12-22

Applicant: PIRELLI

Inventor： JIYURIANO GIRARUDEI

IPC: B60C11/04 ,  B60C11/03 ,  B60C11/12

公开(公告)号：JPH04226331A

公开(公告)日：1992-08-17

申请号：JP9421591

申请日：1991-04-24

Applicant: PIRELLI

Inventor： PIERURUIJI BORUGONOBUO ,  JIYURIANO GIRARUDEI

IPC: B29B7/90 ,  B29C70/58 ,  B29D30/52 ,  B29K21/00 ,  B29K105/16 ,  B29L30/00 ,  B60C11/14

Abstract: PURPOSE: To provide a method for manufacturing a strip of a conglomerate of a compound and anti-skid granules suitable for forming a tread strip for a tire with improved characteristics of adherence to a road surface covered with ice or snow. CONSTITUTION: Individual granules, already pre-treated with adhesive, are coated with uncured compound until the thickness of a rubber coat reaches a value lower than 0.2 mm, the coated granules are then poured into a mixer for incorporation in the compound of the tire tread, after forming a so-called bench and attainment of a temperature of at least 60 deg.C (but not, above 80 deg.C). A mixing operation is then continued until the compound is obtained with a uniform distribution of the granules. The compound is then extruded or profiled as a continuous strip suitable for constituting a tire tread or for being inserted into a cavity of a tread profile together with which it will be subsequently be cured.

公开(公告)号：JPS55123507A

公开(公告)日：1980-09-24

申请号：JP16745979

申请日：1979-12-22

Applicant: PIRELLI

Inventor： JIYURIANO GIRARUDEI

IPC: B60C11/04 ,  B60C20060101 ,  B60C11/03 ,  B60C11/12