Mold and process for making a very thin wall article

Details Mold and process for making a very thin wall article Mold and process for making a very thin wall article

2007-10-09

2007-10-09

Heitbrink, Jill L. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Controlling heat transfer with molding material

C264S328160

Reexamination Certificate

active

10550174

ABSTRACT:
An injection mold and process are arranged to produce very thin articles, such as data discs. Molten plastic is injected into mold parts forming a thin cavity (17), in a cyclic molding process wherein the mold parts are subjected to a substantially constant temperature stimulus and rise and fall in temperature during injection and cooling of the molten plastic. Temperature boosting thermal insulation layers (11, 21) are placed along at least certain parts of the molding cavity surface. This elevates the temperature of the molted melt material for a time during injection. According to a calculated relationship, this thermal insulation is sized to permit the thin mold cavity to fill before heat transfer to the mold parts solidifies the molding material and blocks further flow. The temperature boosters can be contoured in thickness.

REFERENCES:
patent: 6276656 (2001-08-01), Baresich
patent: 6290882 (2001-09-01), Maus et al.

Affiliated with

Also associated with

Rating

Mold and process for making a very thin wall article does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mold and process for making a very thin wall article, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mold and process for making a very thin wall article will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3901164