초록 ▼

A pair of plastic containers are compressed intermediate a pair of jaws and RF energy is applied as a function of the change in impedance of the melting plastic between the jaws to sterilize with heat the plastic intermediate the pair of jaws and to form a sterile rupturable membrane encircled by a

A pair of plastic containers are compressed intermediate a pair of jaws and RF energy is applied as a function of the change in impedance of the melting plastic between the jaws to sterilize with heat the plastic intermediate the pair of jaws and to form a sterile rupturable membrane encircled by a seal to permit fluid communication on demand between the containers upon rupture of the membrane. The use of RF energy to heat bipolar plastic material (dielectric material) both sterilizes the plastic material and welds the plastic material at a proper temperature to form the rupturable membrane without the use of any instrumentation indicative of temperature or other control parameters.

대표청구항 ▼

[ What is claimed is:] [1.] Apparatus for forming a sterile rupturable membrane interconnecting two plastic units placed adjacent one another with material of a wall of one unit in contact with material of a wall of the other unit, said apparatus comprising in combination:(a) a pair of jaws having s

[ What is claimed is:] [1.] Apparatus for forming a sterile rupturable membrane interconnecting two plastic units placed adjacent one another with material of a wall of one unit in contact with material of a wall of the other unit, said apparatus comprising in combination:(a) a pair of jaws having surfaces for clamping the plastic units therebetween to place the wall of one unit adjacent the wall of the other unit;(b) a source of RF energy transmitted across said pair of jaws for heating the clamped units as a function of the impedance of the clamped units to sterilize by heating at least the surfaces of the walls of the units adjacent one another and to fuse the material of the wall of one unit with the material of the adjacent wall of the other unit;(c) means for retaining fused material of the walls of the one and the other units intermediate said pair of jaws to form the sterile rupturable membrane between the one and the other units; and(d) a shield disposed in each unit to prevent fusing the walls of each unit to one another.