公开(公告)号：CA1145235A

公开(公告)日：1983-04-26

申请号：CA351039

申请日：1980-05-01

Applicant: RADIATION DYNAMICS

Inventor： DERBYSHIRE RODNEY L

IPC: B29C55/00 ,  A61F13/00 ,  A61F13/04 ,  A61F13/15 ,  A61F13/56 ,  B29C61/10 ,  B29C65/00 ,  B29C65/02 ,  B29C65/66 ,  B29C65/76 ,  B29C65/78 ,  F16L59/02 ,  H02G15/18 ,  B29D23/10 ,  B29C27/24

Abstract: CLOSURE METHOD AND APPARATUS A method of making a bond structure and a bond structure are provided that produce concurrently a peel bond and a lap bond. One end of a sheet to be joined to a second end of the same or other sheet is folded back on itself and on and of the other member inserted. The two pairs of contacting surfaces thus formed are subsequently bonded to each other. The bonding may be by any means and the clamping force across the bond during bonding need by applied from one side of the sheet only. By insuring that the peel bond fails before the material, a flat lap bond may be achieved by causing only the peel bond to fail.

公开(公告)号：DE3066918D1

公开(公告)日：1984-04-19

申请号：DE3066918

申请日：1980-04-18

Applicant: RADIATION DYNAMICS

Inventor： DERBYSHIRE RODNEY L

IPC: B29C55/00 ,  A61F13/00 ,  A61F13/04 ,  A61F13/15 ,  A61F13/56 ,  B29C61/10 ,  B29C65/00 ,  B29C65/02 ,  B29C65/66 ,  B29C65/76 ,  B29C65/78 ,  F16L59/02 ,  H02G15/18 ,  B29C27/02 ,  B29C27/20

公开(公告)号：DE3071646D1

公开(公告)日：1986-07-24

申请号：DE3071646

申请日：1980-03-06

Applicant: RADIATION DYNAMICS

Inventor： DERBYSHIRE RODNEY L

IPC: B29B9/00 ,  B29B11/00 ,  B29B13/00 ,  B29B13/10 ,  B29B17/00 ,  B29B17/04 ,  C08F2/46 ,  C08J3/12 ,  C08J3/28 ,  C08J11/10 ,  C08J11/00 ,  C08L27/18

公开(公告)号：CA1125699A

公开(公告)日：1982-06-15

申请号：CA346865

申请日：1980-03-03

Applicant: RADIATION DYNAMICS

Inventor： DERBYSHIRE RODNEY L

IPC: B29B9/00 ,  B29B11/00 ,  B29B13/00 ,  B29B13/10 ,  B29B17/00 ,  B29B17/04 ,  C08F2/46 ,  C08J3/12 ,  C08J3/28 ,  C08J11/10

Abstract: TREATMENT OF SINTERED POLYTETRAFLUOROETHYLENE WITH IRRADIATION AND HEAT TO PRODUCE A GRINDABLE MATERIAL Sintered polytetrafluoroethylene is nondestructively degraded so as to be grindable to a powder of an average size of less than 10 microns by a combination of irradiation by electrons or other subatomic. particles in the presence of oxygen or air and concurrent or subsequent heating at temperatures below the melting point of the material. The preferred effective and economic range of irradiation, heat and time at temperature is approximately 50-150 Mrads, 150.degree.F to 600.degree.F for at least about one-half hour depending upon desired average particle size and melt flow characteristics and acceptable yields of fine powders.