Feed block for a flat coextrusion die

Details Feed block for a flat coextrusion die Feed block for a flat coextrusion die

1986-03-27

1987-03-24

Hart, Charles

Plastic article or earthenware shaping or treating: apparatus

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

Extrusion shaping means

425171, 425188, 425380, 425466, B29C 4706

Patent

active

046522255

ABSTRACT:
The block comprises a central channel (2) which feeds a first molten plastic, and at least one secondary channel (5, 10) which feeds a different molten plastic and connects to the central channel (2) upstream of the die, the central channel (2) in the connection zone, being equipped with a flat portion (11) which alters the cross-section of the channel, the said flat portion (11) being mounted in a removable piece (12) coaxial with the central channel and arranged in a guide tube (13) which intersects the central channel (2) and runs through the feed block (1), the said block being equipped with means (20), (21) for gradually withdrawing the removable piece (12) via the guide tube (13) and for replacing it by another removable piece (18) equipped with an identical or different flat portion (19).
The block is particularly suitable for feeding a flat die which delivers films, sheets or composite panels.

REFERENCES:
patent: 2897541 (1959-08-01), Orsini
patent: 3860372 (1975-01-01), Newman
patent: 4030334 (1977-06-01), Wagner et al.

Affiliated with

Also associated with

Rating

Feed block for a flat coextrusion die does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Feed block for a flat coextrusion die, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Feed block for a flat coextrusion die will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1351286