Plastic article or earthenware shaping or treating: apparatus – Stock pressurizing means operably associated with downstream... – Including heating or cooling means
Patent
1981-08-11
1982-12-07
Silbaugh, Jan H.
Plastic article or earthenware shaping or treating: apparatus
Stock pressurizing means operably associated with downstream...
Including heating or cooling means
425548, 425550, 425558, 425381, B29F 308, B29F 108
Patent
active
043624960
ABSTRACT:
Disclosed is a method and apparatus for forming multi-directionally oriented plastic articles by accumulating a body of plasticized thermoplastic material in an amount at least sufficient to form the desired article, and advancing the material under pressure from said body forward and through an orifice. The material is non-linearly sheared while being advanced from the body toward the orifice and prior to its issuance from the orifice to induce orientation stresses into the material, and during shearing the material is at a temperature which is conducive to orientation. The orientation stresses are frozen into the material when the material is formed to a desired configuration exteriorly of the orifice by known plastic forming techniques, such as extrusion, blow molding, injection molding, compression molding, thermoforming and the like. During such forming, additional orientation stresses may be induced in the material and superimposed upon those stresses previously introduced thereinto.
REFERENCES:
patent: 3256560 (1966-06-01), Adomaitis
patent: 3288898 (1966-11-01), West
patent: 3433862 (1969-03-01), Weber
patent: 3733309 (1973-05-01), Wyeth et al.
Click Myron E.
Lynch Charles S.
Owens--Illinois, Inc.
Silbaugh Jan H.
Wilson David H.
LandOfFree
Apparatus for making 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 Apparatus for making plastic articles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for making plastic articles will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1900967