Process for preparing surface-upgraded molded articles using a l

Details Process for preparing surface-upgraded molded articles using a l Process for preparing surface-upgraded molded articles using a l

1991-10-25

1993-08-03

Timm, Catherine

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264259, 264511, 264512, 264516, 425503, 425504, 425509, 425521, 156212, 156245, 1563082, B29C 4904, B29C 4920, B29C 5112

Patent

active

052326535

ABSTRACT:
Blow molding and thermoforming processes in which a mold system having low thermal inertia mold-halves provided with heating and cooling systems is utilized for producing plastic articles coated with surface-upgrading films of high melting polymers or polymers exhibiting a high scratch resistance to improve mechanical characteristics of the molded article. The films may be positioned, before the mold is closed, close to the low thermal inertia mold-halves. Rapid heating and rapid cooling of the mold-halves in contact with the surface-upgraded films permit strength adhesion of the upgrading material to the surface of the molded article.

REFERENCES:
patent: 3736201 (1973-05-01), Teraoka
patent: 5017126 (1991-05-01), Yamada et al.
patent: 5041247 (1991-08-01), Kim
Kiek-Othmer, 3rd Edition, vol. 6, pp. 406-407.

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