Method for producing blow molded multilayer plastic articles

Details Method for producing blow molded multilayer plastic articles Method for producing blow molded multilayer plastic articles

1994-09-27

1996-07-30

Timm, Catherine

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264512, 425523, B29C 4922

Patent

active

055408788

ABSTRACT:
A blow molded multilayer plastic article having a large number of layers is formed. First and second diverse thermoplastic streams are extruded into a coextrusion feedblock. In the feedblock the streams are divided into multiple streams and arranged into a first composite stream having a substantially uniform distribution of the layers. The first stream is fed into an interfacial surface generator in which the stream is manipulated to form a second composite stream having even more layers of substantially uniform thickness. This second stream is then formed into a preform such as by injection molding and this preform is blow molded. The second composite stream and preform are formed so that the layers of first and second materials lie generally parallel to a critical surface and possess substantial uniformity when blow molded.

REFERENCES:
patent: 3195865 (1965-07-01), Harder
patent: 3239197 (1966-03-01), Tollar
patent: 3404869 (1968-10-01), Harder
patent: 3557265 (1971-01-01), Chisholm et al.
patent: 3565985 (1971-02-01), Schrenk et al.
patent: 3716612 (1973-02-01), Schrenk et al.
patent: 3736201 (1973-05-01), Teraoka
patent: 3817675 (1974-06-01), Maiocco
patent: 3884606 (1975-05-01), Schrenk
patent: 4152104 (1979-05-01), Przytulla et al.
patent: 4174413 (1979-11-01), Yasuike et al.
patent: 4410482 (1983-10-01), Subramanian
patent: 4416942 (1983-11-01), DiLuccio
patent: 4444317 (1984-04-01), Subramanian
patent: 4449913 (1984-05-01), Krishnakumar et al.
patent: 4501781 (1985-02-01), Kushida et al.
patent: 4511528 (1985-04-01), Kudert et al.
patent: 4525134 (1985-06-01), McHenry et al.
patent: 4535901 (1985-08-01), Okudaira et al.
patent: 4775308 (1988-10-01), Schad et al.
patent: 4892699 (1990-01-01), Kudert et al.
patent: 4978290 (1990-12-01), Fukuhara
patent: 5004578 (1991-04-01), Eiselen
patent: 5143681 (1992-09-01), Daubenbuchel et al.
James R. Dreps, Design Blow Molds with an Eye to Economy--part 2 Plastics Engineering, Fed. 1975, pp. 32-35.
ASME Publication Paper No. 62-WA-336 Schrenk, Cleereman, Alfrey, Jr.
Smoluk, Modern Plastics, Apr. 1989 pp. 67, 69.
Package Manufacturing, Package Digest, Jan. 1977.
Pawloski and Raspor, Articles with Improved Properties via Solid Phase Forming, ANTEC '85, 1985.

Affiliated with

Also associated with

Rating

Method for producing blow molded multilayer plastic articles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing blow molded multilayer plastic articles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing blow molded multilayer plastic articles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1656198