Method for the manufacture of hollow spherules of synthetic mate

Details Method for the manufacture of hollow spherules of synthetic mate Method for the manufacture of hollow spherules of synthetic mate

1991-01-16

1993-04-27

Aftergut, Karen

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

264256, 2642978, 264300, 264308, 264310, 264317, 264337, 264DIG44, 264DIG57, 427212, B28B 102, B28B 116, B29C 3340, B29C 3376

Patent

active

052059766

ABSTRACT:
The method includes mixing (100) degradable consumable cores (11) with a liquid coating composition (20) including an aqueous solvent (21), a hydrosoluble resin (22) and an anti-agglomerant additive (23), drying (200) the coated cores so as to obtain free balls (12) with a substrate film (2), mixing (300) these balls (12) first of all with a liquid covering substance (30) including a synthetic base product (31) and optionally an auxiliary product (32), then with an anti-agglutinant adjuvant (33), drying (400) the covered balls so as to obtain free ball structures (13) with a covering layer (3), and stoving (500) these ball structures so as to harden their covering layer and degrade the cores and thereby obtain hollow spherules (10). Application in the manufacture of intermediate products for producing in particular energy absorbers.

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