Process of stretch-blow molding

Details Process of stretch-blow molding Process of stretch-blow molding

1992-05-01

1993-05-25

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Including application of internal fluid pressure to hollow...

425529, B29C 4912

Patent

active

052137520

ABSTRACT:
The process and apparatus of stretch-blow molding a preform in the axial and radial directions into a biaxially oriented container by the use of a stretching rod assembly and a blowing of pressurized fluid. In the axially stretching step, the surface area of the working end of the stretching rod assembly is changed. The axially stretching step is carried out through a plurality of stages each of which provide a different surface area of the working end of the stretching rod assembly. The apparatus preferred to carry out this process has a plurality of concentrically disposed stretching rods and an tip piece fixedly mounted on the working end of each of the stretching rods and having an external diameter at the surface area different from those of the other stretching rods. When such stretching rods are driven independently or in combination, the bottom surface area of the stretching rod assembly to be engaged by the inner bottom wall of the preform can be easily changed.

REFERENCES:
patent: 3865530 (1975-02-01), Jesselallee et al.
patent: 3949033 (1976-04-01), Uhlig
patent: 4039641 (1977-08-01), Collins
patent: 4150689 (1979-04-01), Britten
patent: 4524045 (1985-06-01), Hayashi et al.
patent: 4657502 (1987-04-01), Rydmann
patent: 4927679 (1990-05-01), Beck
patent: 4952134 (1990-08-01), Bartley et al.

Affiliated with

Also associated with

Rating

Process of stretch-blow molding does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process of stretch-blow molding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of stretch-blow molding will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-895649