Apparatus for forming preforms with internal barrier

Details Apparatus for forming preforms with internal barrier Apparatus for forming preforms with internal barrier

1986-05-12

1987-12-01

Miles, Tim

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

425533, 425566, B29C 3106

Patent

active

047101180

ABSTRACT:
This relates to laminated preforms, the method of forming such preforms and products which may be beneficially formed utilizing such preforms. Most particularly, this relates to a preform which has formed as part of the injection molding thereof two layers of barrier material which are disposed within two layers of thermoplastic resin and having received therebetween a solid core of thermoplastic resin. The specific method of forming the preform permits the barrier material layers to be of a greatly reduced thickness as compared to such layer thicknesses permissible in the past, with the result that the barrier material layers in the blow molded articles are of a thickness recognized to be acceptable for the barrier function. The barrier material layers may be selectively terminated along the length of the preform so as to permit portions of the resultant blow molded article to be removed and reused. This abstract is not to be construed as limiting the claims of the application.

REFERENCES:
patent: 3023461 (1962-03-01), Sherman
patent: 3733156 (1973-05-01), Garner
patent: 3888612 (1975-06-01), Schrewe et al.
patent: 3979170 (1976-09-01), Monnet
patent: 4117955 (1978-10-01), Sokolow
patent: 4373886 (1983-02-01), Hehl
patent: 4525134 (1985-06-01), McHenry et al.

Affiliated with

Also associated with

Rating

Apparatus for forming preforms with internal barrier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for forming preforms with internal barrier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for forming preforms with internal barrier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1928610